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