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