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 */ 35struct 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 46struct 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 59struct 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 87struct 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 96struct bdaddr_list { 97 struct list_head list; 98 bdaddr_t bdaddr; 99 u8 bdaddr_type; 100}; 101 102struct bt_uuid { 103 struct list_head list; 104 u8 uuid[16]; 105 u8 size; 106 u8 svc_hint; 107}; 108 109struct smp_csrk { 110 bdaddr_t bdaddr; 111 u8 bdaddr_type; 112 u8 type; 113 u8 val[16]; 114}; 115 116struct 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 129struct 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 138struct 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 147struct 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 158struct 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 184struct 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 194struct 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 (*post_init)(struct hci_dev *hdev); 402 int (*set_diag)(struct hci_dev *hdev, bool enable); 403 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 404}; 405 406#define HCI_PHY_HANDLE(handle) (handle & 0xff) 407 408struct hci_conn { 409 struct list_head list; 410 411 atomic_t refcnt; 412 413 bdaddr_t dst; 414 __u8 dst_type; 415 bdaddr_t src; 416 __u8 src_type; 417 bdaddr_t init_addr; 418 __u8 init_addr_type; 419 bdaddr_t resp_addr; 420 __u8 resp_addr_type; 421 __u16 handle; 422 __u16 state; 423 __u8 mode; 424 __u8 type; 425 __u8 role; 426 bool out; 427 __u8 attempt; 428 __u8 dev_class[3]; 429 __u8 features[HCI_MAX_PAGES][8]; 430 __u16 pkt_type; 431 __u16 link_policy; 432 __u8 key_type; 433 __u8 auth_type; 434 __u8 sec_level; 435 __u8 pending_sec_level; 436 __u8 pin_length; 437 __u8 enc_key_size; 438 __u8 io_capability; 439 __u32 passkey_notify; 440 __u8 passkey_entered; 441 __u16 disc_timeout; 442 __u16 conn_timeout; 443 __u16 setting; 444 __u16 le_conn_min_interval; 445 __u16 le_conn_max_interval; 446 __u16 le_conn_interval; 447 __u16 le_conn_latency; 448 __u16 le_supv_timeout; 449 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 450 __u8 le_adv_data_len; 451 __s8 rssi; 452 __s8 tx_power; 453 __s8 max_tx_power; 454 unsigned long flags; 455 456 __u32 clock; 457 __u16 clock_accuracy; 458 459 unsigned long conn_info_timestamp; 460 461 __u8 remote_cap; 462 __u8 remote_auth; 463 __u8 remote_id; 464 465 unsigned int sent; 466 467 struct sk_buff_head data_q; 468 struct list_head chan_list; 469 470 struct delayed_work disc_work; 471 struct delayed_work auto_accept_work; 472 struct delayed_work idle_work; 473 struct delayed_work le_conn_timeout; 474 struct work_struct le_scan_cleanup; 475 476 struct device dev; 477 struct dentry *debugfs; 478 479 struct hci_dev *hdev; 480 void *l2cap_data; 481 void *sco_data; 482 struct amp_mgr *amp_mgr; 483 484 struct hci_conn *link; 485 486 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 487 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 488 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 489}; 490 491struct hci_chan { 492 struct list_head list; 493 __u16 handle; 494 struct hci_conn *conn; 495 struct sk_buff_head data_q; 496 unsigned int sent; 497 __u8 state; 498}; 499 500struct hci_conn_params { 501 struct list_head list; 502 struct list_head action; 503 504 bdaddr_t addr; 505 u8 addr_type; 506 507 u16 conn_min_interval; 508 u16 conn_max_interval; 509 u16 conn_latency; 510 u16 supervision_timeout; 511 512 enum { 513 HCI_AUTO_CONN_DISABLED, 514 HCI_AUTO_CONN_REPORT, 515 HCI_AUTO_CONN_DIRECT, 516 HCI_AUTO_CONN_ALWAYS, 517 HCI_AUTO_CONN_LINK_LOSS, 518 HCI_AUTO_CONN_EXPLICIT, 519 } auto_connect; 520 521 struct hci_conn *conn; 522 bool explicit_connect; 523}; 524 525extern struct list_head hci_dev_list; 526extern struct list_head hci_cb_list; 527extern rwlock_t hci_dev_list_lock; 528extern struct mutex hci_cb_list_lock; 529 530#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 531#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 532#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 533#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 534#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 535#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 536#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 537 538#define hci_dev_clear_volatile_flags(hdev) \ 539 do { \ 540 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 541 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 542 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 543 } while (0) 544 545/* ----- HCI interface to upper protocols ----- */ 546int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 547int l2cap_disconn_ind(struct hci_conn *hcon); 548void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 549 550#if IS_ENABLED(CONFIG_BT_BREDR) 551int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 552void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 553#else 554static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 555 __u8 *flags) 556{ 557 return 0; 558} 559 560static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 561{ 562} 563#endif 564 565/* ----- Inquiry cache ----- */ 566#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 567#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 568 569static inline void discovery_init(struct hci_dev *hdev) 570{ 571 hdev->discovery.state = DISCOVERY_STOPPED; 572 INIT_LIST_HEAD(&hdev->discovery.all); 573 INIT_LIST_HEAD(&hdev->discovery.unknown); 574 INIT_LIST_HEAD(&hdev->discovery.resolve); 575 hdev->discovery.report_invalid_rssi = true; 576 hdev->discovery.rssi = HCI_RSSI_INVALID; 577} 578 579static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 580{ 581 hdev->discovery.result_filtering = false; 582 hdev->discovery.report_invalid_rssi = true; 583 hdev->discovery.rssi = HCI_RSSI_INVALID; 584 hdev->discovery.uuid_count = 0; 585 kfree(hdev->discovery.uuids); 586 hdev->discovery.uuids = NULL; 587 hdev->discovery.scan_start = 0; 588 hdev->discovery.scan_duration = 0; 589} 590 591bool hci_discovery_active(struct hci_dev *hdev); 592 593void hci_discovery_set_state(struct hci_dev *hdev, int state); 594 595static inline int inquiry_cache_empty(struct hci_dev *hdev) 596{ 597 return list_empty(&hdev->discovery.all); 598} 599 600static inline long inquiry_cache_age(struct hci_dev *hdev) 601{ 602 struct discovery_state *c = &hdev->discovery; 603 return jiffies - c->timestamp; 604} 605 606static inline long inquiry_entry_age(struct inquiry_entry *e) 607{ 608 return jiffies - e->timestamp; 609} 610 611struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 612 bdaddr_t *bdaddr); 613struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 614 bdaddr_t *bdaddr); 615struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 616 bdaddr_t *bdaddr, 617 int state); 618void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 619 struct inquiry_entry *ie); 620u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 621 bool name_known); 622void hci_inquiry_cache_flush(struct hci_dev *hdev); 623 624/* ----- HCI Connections ----- */ 625enum { 626 HCI_CONN_AUTH_PEND, 627 HCI_CONN_REAUTH_PEND, 628 HCI_CONN_ENCRYPT_PEND, 629 HCI_CONN_RSWITCH_PEND, 630 HCI_CONN_MODE_CHANGE_PEND, 631 HCI_CONN_SCO_SETUP_PEND, 632 HCI_CONN_MGMT_CONNECTED, 633 HCI_CONN_SSP_ENABLED, 634 HCI_CONN_SC_ENABLED, 635 HCI_CONN_AES_CCM, 636 HCI_CONN_POWER_SAVE, 637 HCI_CONN_FLUSH_KEY, 638 HCI_CONN_ENCRYPT, 639 HCI_CONN_AUTH, 640 HCI_CONN_SECURE, 641 HCI_CONN_FIPS, 642 HCI_CONN_STK_ENCRYPT, 643 HCI_CONN_AUTH_INITIATOR, 644 HCI_CONN_DROP, 645 HCI_CONN_PARAM_REMOVAL_PEND, 646 HCI_CONN_NEW_LINK_KEY, 647 HCI_CONN_SCANNING, 648}; 649 650static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 651{ 652 struct hci_dev *hdev = conn->hdev; 653 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 654 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 655} 656 657static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 658{ 659 struct hci_dev *hdev = conn->hdev; 660 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 661 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 662} 663 664static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 665{ 666 struct hci_conn_hash *h = &hdev->conn_hash; 667 list_add_rcu(&c->list, &h->list); 668 switch (c->type) { 669 case ACL_LINK: 670 h->acl_num++; 671 break; 672 case AMP_LINK: 673 h->amp_num++; 674 break; 675 case LE_LINK: 676 h->le_num++; 677 if (c->role == HCI_ROLE_SLAVE) 678 h->le_num_slave++; 679 break; 680 case SCO_LINK: 681 case ESCO_LINK: 682 h->sco_num++; 683 break; 684 } 685} 686 687static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 688{ 689 struct hci_conn_hash *h = &hdev->conn_hash; 690 691 list_del_rcu(&c->list); 692 synchronize_rcu(); 693 694 switch (c->type) { 695 case ACL_LINK: 696 h->acl_num--; 697 break; 698 case AMP_LINK: 699 h->amp_num--; 700 break; 701 case LE_LINK: 702 h->le_num--; 703 if (c->role == HCI_ROLE_SLAVE) 704 h->le_num_slave--; 705 break; 706 case SCO_LINK: 707 case ESCO_LINK: 708 h->sco_num--; 709 break; 710 } 711} 712 713static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 714{ 715 struct hci_conn_hash *h = &hdev->conn_hash; 716 switch (type) { 717 case ACL_LINK: 718 return h->acl_num; 719 case AMP_LINK: 720 return h->amp_num; 721 case LE_LINK: 722 return h->le_num; 723 case SCO_LINK: 724 case ESCO_LINK: 725 return h->sco_num; 726 default: 727 return 0; 728 } 729} 730 731static inline unsigned int hci_conn_count(struct hci_dev *hdev) 732{ 733 struct hci_conn_hash *c = &hdev->conn_hash; 734 735 return c->acl_num + c->amp_num + c->sco_num + c->le_num; 736} 737 738static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 739{ 740 struct hci_conn_hash *h = &hdev->conn_hash; 741 struct hci_conn *c; 742 __u8 type = INVALID_LINK; 743 744 rcu_read_lock(); 745 746 list_for_each_entry_rcu(c, &h->list, list) { 747 if (c->handle == handle) { 748 type = c->type; 749 break; 750 } 751 } 752 753 rcu_read_unlock(); 754 755 return type; 756} 757 758static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 759 __u16 handle) 760{ 761 struct hci_conn_hash *h = &hdev->conn_hash; 762 struct hci_conn *c; 763 764 rcu_read_lock(); 765 766 list_for_each_entry_rcu(c, &h->list, list) { 767 if (c->handle == handle) { 768 rcu_read_unlock(); 769 return c; 770 } 771 } 772 rcu_read_unlock(); 773 774 return NULL; 775} 776 777static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 778 __u8 type, bdaddr_t *ba) 779{ 780 struct hci_conn_hash *h = &hdev->conn_hash; 781 struct hci_conn *c; 782 783 rcu_read_lock(); 784 785 list_for_each_entry_rcu(c, &h->list, list) { 786 if (c->type == type && !bacmp(&c->dst, ba)) { 787 rcu_read_unlock(); 788 return c; 789 } 790 } 791 792 rcu_read_unlock(); 793 794 return NULL; 795} 796 797static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 798 bdaddr_t *ba, 799 __u8 ba_type) 800{ 801 struct hci_conn_hash *h = &hdev->conn_hash; 802 struct hci_conn *c; 803 804 rcu_read_lock(); 805 806 list_for_each_entry_rcu(c, &h->list, list) { 807 if (c->type != LE_LINK) 808 continue; 809 810 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 811 rcu_read_unlock(); 812 return c; 813 } 814 } 815 816 rcu_read_unlock(); 817 818 return NULL; 819} 820 821static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 822 __u8 type, __u16 state) 823{ 824 struct hci_conn_hash *h = &hdev->conn_hash; 825 struct hci_conn *c; 826 827 rcu_read_lock(); 828 829 list_for_each_entry_rcu(c, &h->list, list) { 830 if (c->type == type && c->state == state) { 831 rcu_read_unlock(); 832 return c; 833 } 834 } 835 836 rcu_read_unlock(); 837 838 return NULL; 839} 840 841static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 842{ 843 struct hci_conn_hash *h = &hdev->conn_hash; 844 struct hci_conn *c; 845 846 rcu_read_lock(); 847 848 list_for_each_entry_rcu(c, &h->list, list) { 849 if (c->type == LE_LINK && c->state == BT_CONNECT && 850 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 851 rcu_read_unlock(); 852 return c; 853 } 854 } 855 856 rcu_read_unlock(); 857 858 return NULL; 859} 860 861int hci_disconnect(struct hci_conn *conn, __u8 reason); 862bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 863void hci_sco_setup(struct hci_conn *conn, __u8 status); 864 865struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 866 u8 role); 867int hci_conn_del(struct hci_conn *conn); 868void hci_conn_hash_flush(struct hci_dev *hdev); 869void hci_conn_check_pending(struct hci_dev *hdev); 870 871struct hci_chan *hci_chan_create(struct hci_conn *conn); 872void hci_chan_del(struct hci_chan *chan); 873void hci_chan_list_flush(struct hci_conn *conn); 874struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 875 876struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 877 u8 dst_type, u8 sec_level, 878 u16 conn_timeout, u8 role); 879struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 880 u8 dst_type, u8 sec_level, u16 conn_timeout, 881 u8 role); 882struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 883 u8 sec_level, u8 auth_type); 884struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 885 __u16 setting); 886int hci_conn_check_link_mode(struct hci_conn *conn); 887int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 888int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 889 bool initiator); 890int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 891 892void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 893 894void hci_le_conn_failed(struct hci_conn *conn, u8 status); 895 896/* 897 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 898 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 899 * working or anything else. They just guarantee that the object is available 900 * and can be dereferenced. So you can use its locks, local variables and any 901 * other constant data. 902 * Before accessing runtime data, you _must_ lock the object and then check that 903 * it is still running. As soon as you release the locks, the connection might 904 * get dropped, though. 905 * 906 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 907 * how long the underlying connection is held. So every channel that runs on the 908 * hci_conn object calls this to prevent the connection from disappearing. As 909 * long as you hold a device, you must also guarantee that you have a valid 910 * reference to the device via hci_conn_get() (or the initial reference from 911 * hci_conn_add()). 912 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 913 * break because nobody cares for that. But this means, we cannot use 914 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 915 */ 916 917static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 918{ 919 get_device(&conn->dev); 920 return conn; 921} 922 923static inline void hci_conn_put(struct hci_conn *conn) 924{ 925 put_device(&conn->dev); 926} 927 928static inline void hci_conn_hold(struct hci_conn *conn) 929{ 930 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 931 932 atomic_inc(&conn->refcnt); 933 cancel_delayed_work(&conn->disc_work); 934} 935 936static inline void hci_conn_drop(struct hci_conn *conn) 937{ 938 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 939 940 if (atomic_dec_and_test(&conn->refcnt)) { 941 unsigned long timeo; 942 943 switch (conn->type) { 944 case ACL_LINK: 945 case LE_LINK: 946 cancel_delayed_work(&conn->idle_work); 947 if (conn->state == BT_CONNECTED) { 948 timeo = conn->disc_timeout; 949 if (!conn->out) 950 timeo *= 2; 951 } else { 952 timeo = 0; 953 } 954 break; 955 956 case AMP_LINK: 957 timeo = conn->disc_timeout; 958 break; 959 960 default: 961 timeo = 0; 962 break; 963 } 964 965 cancel_delayed_work(&conn->disc_work); 966 queue_delayed_work(conn->hdev->workqueue, 967 &conn->disc_work, timeo); 968 } 969} 970 971/* ----- HCI Devices ----- */ 972static inline void hci_dev_put(struct hci_dev *d) 973{ 974 BT_DBG("%s orig refcnt %d", d->name, 975 atomic_read(&d->dev.kobj.kref.refcount)); 976 977 put_device(&d->dev); 978} 979 980static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 981{ 982 BT_DBG("%s orig refcnt %d", d->name, 983 atomic_read(&d->dev.kobj.kref.refcount)); 984 985 get_device(&d->dev); 986 return d; 987} 988 989#define hci_dev_lock(d) mutex_lock(&d->lock) 990#define hci_dev_unlock(d) mutex_unlock(&d->lock) 991 992#define to_hci_dev(d) container_of(d, struct hci_dev, dev) 993#define to_hci_conn(c) container_of(c, struct hci_conn, dev) 994 995static inline void *hci_get_drvdata(struct hci_dev *hdev) 996{ 997 return dev_get_drvdata(&hdev->dev); 998} 999 1000static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1001{ 1002 dev_set_drvdata(&hdev->dev, data); 1003} 1004 1005struct hci_dev *hci_dev_get(int index); 1006struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src); 1007 1008struct hci_dev *hci_alloc_dev(void); 1009void hci_free_dev(struct hci_dev *hdev); 1010int hci_register_dev(struct hci_dev *hdev); 1011void hci_unregister_dev(struct hci_dev *hdev); 1012int hci_suspend_dev(struct hci_dev *hdev); 1013int hci_resume_dev(struct hci_dev *hdev); 1014int hci_reset_dev(struct hci_dev *hdev); 1015int hci_dev_open(__u16 dev); 1016int hci_dev_close(__u16 dev); 1017int hci_dev_do_close(struct hci_dev *hdev); 1018int hci_dev_reset(__u16 dev); 1019int hci_dev_reset_stat(__u16 dev); 1020int hci_dev_cmd(unsigned int cmd, void __user *arg); 1021int hci_get_dev_list(void __user *arg); 1022int hci_get_dev_info(void __user *arg); 1023int hci_get_conn_list(void __user *arg); 1024int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1025int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1026int hci_inquiry(void __user *arg); 1027 1028struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1029 bdaddr_t *bdaddr, u8 type); 1030int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1031int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1032void hci_bdaddr_list_clear(struct list_head *list); 1033 1034struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1035 bdaddr_t *addr, u8 addr_type); 1036struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1037 bdaddr_t *addr, u8 addr_type); 1038void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1039void hci_conn_params_clear_all(struct hci_dev *hdev); 1040void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1041 1042struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1043 bdaddr_t *addr, 1044 u8 addr_type); 1045 1046void hci_uuids_clear(struct hci_dev *hdev); 1047 1048void hci_link_keys_clear(struct hci_dev *hdev); 1049struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1050struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1051 bdaddr_t *bdaddr, u8 *val, u8 type, 1052 u8 pin_len, bool *persistent); 1053struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1054 u8 addr_type, u8 type, u8 authenticated, 1055 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1056struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1057 u8 addr_type, u8 role); 1058int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1059void hci_smp_ltks_clear(struct hci_dev *hdev); 1060int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1061 1062struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1063struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1064 u8 addr_type); 1065struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1066 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1067void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1068void hci_smp_irks_clear(struct hci_dev *hdev); 1069 1070bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1071 1072void hci_remote_oob_data_clear(struct hci_dev *hdev); 1073struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1074 bdaddr_t *bdaddr, u8 bdaddr_type); 1075int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1076 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1077 u8 *hash256, u8 *rand256); 1078int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1079 u8 bdaddr_type); 1080 1081void hci_adv_instances_clear(struct hci_dev *hdev); 1082struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1083struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1084int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, 1085 u16 adv_data_len, u8 *adv_data, 1086 u16 scan_rsp_len, u8 *scan_rsp_data, 1087 u16 timeout, u16 duration); 1088int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1089 1090void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1091 1092int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1093int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1094 1095void hci_init_sysfs(struct hci_dev *hdev); 1096void hci_conn_init_sysfs(struct hci_conn *conn); 1097void hci_conn_add_sysfs(struct hci_conn *conn); 1098void hci_conn_del_sysfs(struct hci_conn *conn); 1099 1100#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1101 1102/* ----- LMP capabilities ----- */ 1103#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1104#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1105#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1106#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1107#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1108#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1109#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1110#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1111#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1112#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1113#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1114#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1115#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1116#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1117#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1118#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1119#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1120#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1121#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1122 1123/* ----- Extended LMP capabilities ----- */ 1124#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) 1125#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) 1126#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1127#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1128#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1129#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1130 1131/* ----- Host capabilities ----- */ 1132#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1133#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1134#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1135#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1136 1137#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1138 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1139#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1140 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1141 1142/* ----- HCI protocols ----- */ 1143#define HCI_PROTO_DEFER 0x01 1144 1145static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1146 __u8 type, __u8 *flags) 1147{ 1148 switch (type) { 1149 case ACL_LINK: 1150 return l2cap_connect_ind(hdev, bdaddr); 1151 1152 case SCO_LINK: 1153 case ESCO_LINK: 1154 return sco_connect_ind(hdev, bdaddr, flags); 1155 1156 default: 1157 BT_ERR("unknown link type %d", type); 1158 return -EINVAL; 1159 } 1160} 1161 1162static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1163{ 1164 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1165 return HCI_ERROR_REMOTE_USER_TERM; 1166 1167 return l2cap_disconn_ind(conn); 1168} 1169 1170/* ----- HCI callbacks ----- */ 1171struct hci_cb { 1172 struct list_head list; 1173 1174 char *name; 1175 1176 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1177 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1178 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1179 __u8 encrypt); 1180 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1181 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1182}; 1183 1184static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1185{ 1186 struct hci_cb *cb; 1187 1188 mutex_lock(&hci_cb_list_lock); 1189 list_for_each_entry(cb, &hci_cb_list, list) { 1190 if (cb->connect_cfm) 1191 cb->connect_cfm(conn, status); 1192 } 1193 mutex_unlock(&hci_cb_list_lock); 1194 1195 if (conn->connect_cfm_cb) 1196 conn->connect_cfm_cb(conn, status); 1197} 1198 1199static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1200{ 1201 struct hci_cb *cb; 1202 1203 mutex_lock(&hci_cb_list_lock); 1204 list_for_each_entry(cb, &hci_cb_list, list) { 1205 if (cb->disconn_cfm) 1206 cb->disconn_cfm(conn, reason); 1207 } 1208 mutex_unlock(&hci_cb_list_lock); 1209 1210 if (conn->disconn_cfm_cb) 1211 conn->disconn_cfm_cb(conn, reason); 1212} 1213 1214static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1215{ 1216 struct hci_cb *cb; 1217 __u8 encrypt; 1218 1219 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1220 return; 1221 1222 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1223 1224 mutex_lock(&hci_cb_list_lock); 1225 list_for_each_entry(cb, &hci_cb_list, list) { 1226 if (cb->security_cfm) 1227 cb->security_cfm(conn, status, encrypt); 1228 } 1229 mutex_unlock(&hci_cb_list_lock); 1230 1231 if (conn->security_cfm_cb) 1232 conn->security_cfm_cb(conn, status); 1233} 1234 1235static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 1236 __u8 encrypt) 1237{ 1238 struct hci_cb *cb; 1239 1240 if (conn->sec_level == BT_SECURITY_SDP) 1241 conn->sec_level = BT_SECURITY_LOW; 1242 1243 if (conn->pending_sec_level > conn->sec_level) 1244 conn->sec_level = conn->pending_sec_level; 1245 1246 mutex_lock(&hci_cb_list_lock); 1247 list_for_each_entry(cb, &hci_cb_list, list) { 1248 if (cb->security_cfm) 1249 cb->security_cfm(conn, status, encrypt); 1250 } 1251 mutex_unlock(&hci_cb_list_lock); 1252 1253 if (conn->security_cfm_cb) 1254 conn->security_cfm_cb(conn, status); 1255} 1256 1257static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1258{ 1259 struct hci_cb *cb; 1260 1261 mutex_lock(&hci_cb_list_lock); 1262 list_for_each_entry(cb, &hci_cb_list, list) { 1263 if (cb->key_change_cfm) 1264 cb->key_change_cfm(conn, status); 1265 } 1266 mutex_unlock(&hci_cb_list_lock); 1267} 1268 1269static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1270 __u8 role) 1271{ 1272 struct hci_cb *cb; 1273 1274 mutex_lock(&hci_cb_list_lock); 1275 list_for_each_entry(cb, &hci_cb_list, list) { 1276 if (cb->role_switch_cfm) 1277 cb->role_switch_cfm(conn, status, role); 1278 } 1279 mutex_unlock(&hci_cb_list_lock); 1280} 1281 1282static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type) 1283{ 1284 size_t parsed = 0; 1285 1286 if (data_len < 2) 1287 return false; 1288 1289 while (parsed < data_len - 1) { 1290 u8 field_len = data[0]; 1291 1292 if (field_len == 0) 1293 break; 1294 1295 parsed += field_len + 1; 1296 1297 if (parsed > data_len) 1298 break; 1299 1300 if (data[1] == type) 1301 return true; 1302 1303 data += field_len + 1; 1304 } 1305 1306 return false; 1307} 1308 1309static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1310{ 1311 if (addr_type != ADDR_LE_DEV_RANDOM) 1312 return false; 1313 1314 if ((bdaddr->b[5] & 0xc0) == 0x40) 1315 return true; 1316 1317 return false; 1318} 1319 1320static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1321{ 1322 if (addr_type == ADDR_LE_DEV_PUBLIC) 1323 return true; 1324 1325 /* Check for Random Static address type */ 1326 if ((addr->b[5] & 0xc0) == 0xc0) 1327 return true; 1328 1329 return false; 1330} 1331 1332static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1333 bdaddr_t *bdaddr, u8 addr_type) 1334{ 1335 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1336 return NULL; 1337 1338 return hci_find_irk_by_rpa(hdev, bdaddr); 1339} 1340 1341static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1342 u16 to_multiplier) 1343{ 1344 u16 max_latency; 1345 1346 if (min > max || min < 6 || max > 3200) 1347 return -EINVAL; 1348 1349 if (to_multiplier < 10 || to_multiplier > 3200) 1350 return -EINVAL; 1351 1352 if (max >= to_multiplier * 8) 1353 return -EINVAL; 1354 1355 max_latency = (to_multiplier * 4 / max) - 1; 1356 if (latency > 499 || latency > max_latency) 1357 return -EINVAL; 1358 1359 return 0; 1360} 1361 1362int hci_register_cb(struct hci_cb *hcb); 1363int hci_unregister_cb(struct hci_cb *hcb); 1364 1365struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1366 const void *param, u32 timeout); 1367struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, 1368 const void *param, u8 event, u32 timeout); 1369 1370int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1371 const void *param); 1372void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1373void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1374 1375void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1376 1377struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1378 const void *param, u32 timeout); 1379 1380/* ----- HCI Sockets ----- */ 1381void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1382void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1383 int flag, struct sock *skip_sk); 1384void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1385 1386void hci_sock_dev_event(struct hci_dev *hdev, int event); 1387 1388#define HCI_MGMT_VAR_LEN BIT(0) 1389#define HCI_MGMT_NO_HDEV BIT(1) 1390#define HCI_MGMT_UNTRUSTED BIT(2) 1391#define HCI_MGMT_UNCONFIGURED BIT(3) 1392 1393struct hci_mgmt_handler { 1394 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1395 u16 data_len); 1396 size_t data_len; 1397 unsigned long flags; 1398}; 1399 1400struct hci_mgmt_chan { 1401 struct list_head list; 1402 unsigned short channel; 1403 size_t handler_count; 1404 const struct hci_mgmt_handler *handlers; 1405 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1406}; 1407 1408int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1409void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1410 1411/* Management interface */ 1412#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1413#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1414 BIT(BDADDR_LE_RANDOM)) 1415#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1416 BIT(BDADDR_LE_PUBLIC) | \ 1417 BIT(BDADDR_LE_RANDOM)) 1418 1419/* These LE scan and inquiry parameters were chosen according to LE General 1420 * Discovery Procedure specification. 1421 */ 1422#define DISCOV_LE_SCAN_WIN 0x12 1423#define DISCOV_LE_SCAN_INT 0x12 1424#define DISCOV_LE_TIMEOUT 10240 /* msec */ 1425#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 1426#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 1427#define DISCOV_BREDR_INQUIRY_LEN 0x08 1428#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 1429 1430int mgmt_new_settings(struct hci_dev *hdev); 1431void mgmt_index_added(struct hci_dev *hdev); 1432void mgmt_index_removed(struct hci_dev *hdev); 1433void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 1434int mgmt_powered(struct hci_dev *hdev, u8 powered); 1435int mgmt_update_adv_data(struct hci_dev *hdev); 1436void mgmt_discoverable_timeout(struct hci_dev *hdev); 1437void mgmt_adv_timeout_expired(struct hci_dev *hdev); 1438void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 1439 bool persistent); 1440void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 1441 u32 flags, u8 *name, u8 name_len); 1442void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1443 u8 link_type, u8 addr_type, u8 reason, 1444 bool mgmt_connected); 1445void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1446 u8 link_type, u8 addr_type, u8 status); 1447void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1448 u8 addr_type, u8 status); 1449void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1450void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1451 u8 status); 1452void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1453 u8 status); 1454int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1455 u8 link_type, u8 addr_type, u32 value, 1456 u8 confirm_hint); 1457int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1458 u8 link_type, u8 addr_type, u8 status); 1459int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1460 u8 link_type, u8 addr_type, u8 status); 1461int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1462 u8 link_type, u8 addr_type); 1463int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1464 u8 link_type, u8 addr_type, u8 status); 1465int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1466 u8 link_type, u8 addr_type, u8 status); 1467int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1468 u8 link_type, u8 addr_type, u32 passkey, 1469 u8 entered); 1470void mgmt_auth_failed(struct hci_conn *conn, u8 status); 1471void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1472void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1473void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1474 u8 status); 1475void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1476void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1477 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 1478 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len); 1479void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1480 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1481void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1482bool mgmt_powering_down(struct hci_dev *hdev); 1483void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 1484void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 1485void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 1486 bool persistent); 1487void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 1488 u8 bdaddr_type, u8 store_hint, u16 min_interval, 1489 u16 max_interval, u16 latency, u16 timeout); 1490void mgmt_reenable_advertising(struct hci_dev *hdev); 1491void mgmt_smp_complete(struct hci_conn *conn, bool complete); 1492 1493u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 1494 u16 to_multiplier); 1495void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 1496 __u8 ltk[16], __u8 key_size); 1497 1498void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 1499 u8 *bdaddr_type); 1500 1501#define SCO_AIRMODE_MASK 0x0003 1502#define SCO_AIRMODE_CVSD 0x0000 1503#define SCO_AIRMODE_TRANSP 0x0003 1504 1505#endif /* __HCI_CORE_H */ 1506