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 <linux/leds.h> 29 #include <linux/rculist.h> 30 31 #include <net/bluetooth/hci.h> 32 #include <net/bluetooth/hci_sock.h> 33 34 /* HCI priority */ 35 #define HCI_PRIO_MAX 7 36 37 /* HCI Core structures */ 38 struct inquiry_data { 39 bdaddr_t bdaddr; 40 __u8 pscan_rep_mode; 41 __u8 pscan_period_mode; 42 __u8 pscan_mode; 43 __u8 dev_class[3]; 44 __le16 clock_offset; 45 __s8 rssi; 46 __u8 ssp_mode; 47 }; 48 49 struct inquiry_entry { 50 struct list_head all; /* inq_cache.all */ 51 struct list_head list; /* unknown or resolve */ 52 enum { 53 NAME_NOT_KNOWN, 54 NAME_NEEDED, 55 NAME_PENDING, 56 NAME_KNOWN, 57 } name_state; 58 __u32 timestamp; 59 struct inquiry_data data; 60 }; 61 62 struct discovery_state { 63 int type; 64 enum { 65 DISCOVERY_STOPPED, 66 DISCOVERY_STARTING, 67 DISCOVERY_FINDING, 68 DISCOVERY_RESOLVING, 69 DISCOVERY_STOPPING, 70 } state; 71 struct list_head all; /* All devices found during inquiry */ 72 struct list_head unknown; /* Name state not known */ 73 struct list_head resolve; /* Name needs to be resolved */ 74 __u32 timestamp; 75 bdaddr_t last_adv_addr; 76 u8 last_adv_addr_type; 77 s8 last_adv_rssi; 78 u32 last_adv_flags; 79 u8 last_adv_data[HCI_MAX_AD_LENGTH]; 80 u8 last_adv_data_len; 81 bool report_invalid_rssi; 82 bool result_filtering; 83 bool limited; 84 s8 rssi; 85 u16 uuid_count; 86 u8 (*uuids)[16]; 87 unsigned long scan_start; 88 unsigned long scan_duration; 89 }; 90 91 struct hci_conn_hash { 92 struct list_head list; 93 unsigned int acl_num; 94 unsigned int amp_num; 95 unsigned int sco_num; 96 unsigned int le_num; 97 unsigned int le_num_slave; 98 }; 99 100 struct bdaddr_list { 101 struct list_head list; 102 bdaddr_t bdaddr; 103 u8 bdaddr_type; 104 }; 105 106 struct bdaddr_list_with_irk { 107 struct list_head list; 108 bdaddr_t bdaddr; 109 u8 bdaddr_type; 110 u8 peer_irk[16]; 111 u8 local_irk[16]; 112 }; 113 114 struct bt_uuid { 115 struct list_head list; 116 u8 uuid[16]; 117 u8 size; 118 u8 svc_hint; 119 }; 120 121 struct smp_csrk { 122 bdaddr_t bdaddr; 123 u8 bdaddr_type; 124 u8 type; 125 u8 val[16]; 126 }; 127 128 struct smp_ltk { 129 struct list_head list; 130 struct rcu_head rcu; 131 bdaddr_t bdaddr; 132 u8 bdaddr_type; 133 u8 authenticated; 134 u8 type; 135 u8 enc_size; 136 __le16 ediv; 137 __le64 rand; 138 u8 val[16]; 139 }; 140 141 struct smp_irk { 142 struct list_head list; 143 struct rcu_head rcu; 144 bdaddr_t rpa; 145 bdaddr_t bdaddr; 146 u8 addr_type; 147 u8 val[16]; 148 }; 149 150 struct link_key { 151 struct list_head list; 152 struct rcu_head rcu; 153 bdaddr_t bdaddr; 154 u8 type; 155 u8 val[HCI_LINK_KEY_SIZE]; 156 u8 pin_len; 157 }; 158 159 struct oob_data { 160 struct list_head list; 161 bdaddr_t bdaddr; 162 u8 bdaddr_type; 163 u8 present; 164 u8 hash192[16]; 165 u8 rand192[16]; 166 u8 hash256[16]; 167 u8 rand256[16]; 168 }; 169 170 struct adv_info { 171 struct list_head list; 172 bool pending; 173 __u8 instance; 174 __u32 flags; 175 __u16 timeout; 176 __u16 remaining_time; 177 __u16 duration; 178 __u16 adv_data_len; 179 __u8 adv_data[HCI_MAX_AD_LENGTH]; 180 __u16 scan_rsp_len; 181 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 182 __s8 tx_power; 183 bdaddr_t random_addr; 184 bool rpa_expired; 185 struct delayed_work rpa_expired_cb; 186 }; 187 188 #define HCI_MAX_ADV_INSTANCES 5 189 #define HCI_DEFAULT_ADV_DURATION 2 190 191 #define HCI_MAX_SHORT_NAME_LENGTH 10 192 193 /* Min encryption key size to match with SMP */ 194 #define HCI_MIN_ENC_KEY_SIZE 7 195 196 /* Default LE RPA expiry time, 15 minutes */ 197 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 198 199 /* Default min/max age of connection information (1s/3s) */ 200 #define DEFAULT_CONN_INFO_MIN_AGE 1000 201 #define DEFAULT_CONN_INFO_MAX_AGE 3000 202 203 struct amp_assoc { 204 __u16 len; 205 __u16 offset; 206 __u16 rem_len; 207 __u16 len_so_far; 208 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 209 }; 210 211 #define HCI_MAX_PAGES 3 212 213 struct hci_dev { 214 struct list_head list; 215 struct mutex lock; 216 217 char name[8]; 218 unsigned long flags; 219 __u16 id; 220 __u8 bus; 221 __u8 dev_type; 222 bdaddr_t bdaddr; 223 bdaddr_t setup_addr; 224 bdaddr_t public_addr; 225 bdaddr_t random_addr; 226 bdaddr_t static_addr; 227 __u8 adv_addr_type; 228 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 229 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 230 __u8 eir[HCI_MAX_EIR_LENGTH]; 231 __u16 appearance; 232 __u8 dev_class[3]; 233 __u8 major_class; 234 __u8 minor_class; 235 __u8 max_page; 236 __u8 features[HCI_MAX_PAGES][8]; 237 __u8 le_features[8]; 238 __u8 le_white_list_size; 239 __u8 le_resolv_list_size; 240 __u8 le_num_of_adv_sets; 241 __u8 le_states[8]; 242 __u8 commands[64]; 243 __u8 hci_ver; 244 __u16 hci_rev; 245 __u8 lmp_ver; 246 __u16 manufacturer; 247 __u16 lmp_subver; 248 __u16 voice_setting; 249 __u8 num_iac; 250 __u8 stored_max_keys; 251 __u8 stored_num_keys; 252 __u8 io_capability; 253 __s8 inq_tx_power; 254 __u16 page_scan_interval; 255 __u16 page_scan_window; 256 __u8 page_scan_type; 257 __u8 le_adv_channel_map; 258 __u16 le_adv_min_interval; 259 __u16 le_adv_max_interval; 260 __u8 le_scan_type; 261 __u16 le_scan_interval; 262 __u16 le_scan_window; 263 __u16 le_conn_min_interval; 264 __u16 le_conn_max_interval; 265 __u16 le_conn_latency; 266 __u16 le_supv_timeout; 267 __u16 le_def_tx_len; 268 __u16 le_def_tx_time; 269 __u16 le_max_tx_len; 270 __u16 le_max_tx_time; 271 __u16 le_max_rx_len; 272 __u16 le_max_rx_time; 273 __u8 le_max_key_size; 274 __u8 le_min_key_size; 275 __u16 discov_interleaved_timeout; 276 __u16 conn_info_min_age; 277 __u16 conn_info_max_age; 278 __u8 ssp_debug_mode; 279 __u8 hw_error_code; 280 __u32 clock; 281 282 __u16 devid_source; 283 __u16 devid_vendor; 284 __u16 devid_product; 285 __u16 devid_version; 286 287 __u16 pkt_type; 288 __u16 esco_type; 289 __u16 link_policy; 290 __u16 link_mode; 291 292 __u32 idle_timeout; 293 __u16 sniff_min_interval; 294 __u16 sniff_max_interval; 295 296 __u8 amp_status; 297 __u32 amp_total_bw; 298 __u32 amp_max_bw; 299 __u32 amp_min_latency; 300 __u32 amp_max_pdu; 301 __u8 amp_type; 302 __u16 amp_pal_cap; 303 __u16 amp_assoc_size; 304 __u32 amp_max_flush_to; 305 __u32 amp_be_flush_to; 306 307 struct amp_assoc loc_assoc; 308 309 __u8 flow_ctl_mode; 310 311 unsigned int auto_accept_delay; 312 313 unsigned long quirks; 314 315 atomic_t cmd_cnt; 316 unsigned int acl_cnt; 317 unsigned int sco_cnt; 318 unsigned int le_cnt; 319 320 unsigned int acl_mtu; 321 unsigned int sco_mtu; 322 unsigned int le_mtu; 323 unsigned int acl_pkts; 324 unsigned int sco_pkts; 325 unsigned int le_pkts; 326 327 __u16 block_len; 328 __u16 block_mtu; 329 __u16 num_blocks; 330 __u16 block_cnt; 331 332 unsigned long acl_last_tx; 333 unsigned long sco_last_tx; 334 unsigned long le_last_tx; 335 336 __u8 le_tx_def_phys; 337 __u8 le_rx_def_phys; 338 339 struct workqueue_struct *workqueue; 340 struct workqueue_struct *req_workqueue; 341 342 struct work_struct power_on; 343 struct delayed_work power_off; 344 struct work_struct error_reset; 345 346 __u16 discov_timeout; 347 struct delayed_work discov_off; 348 349 struct delayed_work service_cache; 350 351 struct delayed_work cmd_timer; 352 353 struct work_struct rx_work; 354 struct work_struct cmd_work; 355 struct work_struct tx_work; 356 357 struct work_struct discov_update; 358 struct work_struct bg_scan_update; 359 struct work_struct scan_update; 360 struct work_struct connectable_update; 361 struct work_struct discoverable_update; 362 struct delayed_work le_scan_disable; 363 struct delayed_work le_scan_restart; 364 365 struct sk_buff_head rx_q; 366 struct sk_buff_head raw_q; 367 struct sk_buff_head cmd_q; 368 369 struct sk_buff *sent_cmd; 370 371 struct mutex req_lock; 372 wait_queue_head_t req_wait_q; 373 __u32 req_status; 374 __u32 req_result; 375 struct sk_buff *req_skb; 376 377 void *smp_data; 378 void *smp_bredr_data; 379 380 struct discovery_state discovery; 381 struct hci_conn_hash conn_hash; 382 383 struct list_head mgmt_pending; 384 struct list_head blacklist; 385 struct list_head whitelist; 386 struct list_head uuids; 387 struct list_head link_keys; 388 struct list_head long_term_keys; 389 struct list_head identity_resolving_keys; 390 struct list_head remote_oob_data; 391 struct list_head le_white_list; 392 struct list_head le_resolv_list; 393 struct list_head le_conn_params; 394 struct list_head pend_le_conns; 395 struct list_head pend_le_reports; 396 397 struct hci_dev_stats stat; 398 399 atomic_t promisc; 400 401 const char *hw_info; 402 const char *fw_info; 403 struct dentry *debugfs; 404 405 struct device dev; 406 407 struct rfkill *rfkill; 408 409 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 410 411 __s8 adv_tx_power; 412 __u8 adv_data[HCI_MAX_AD_LENGTH]; 413 __u8 adv_data_len; 414 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 415 __u8 scan_rsp_data_len; 416 417 struct list_head adv_instances; 418 unsigned int adv_instance_cnt; 419 __u8 cur_adv_instance; 420 __u16 adv_instance_timeout; 421 struct delayed_work adv_instance_expire; 422 423 __u8 irk[16]; 424 __u32 rpa_timeout; 425 struct delayed_work rpa_expired; 426 bdaddr_t rpa; 427 428 #if IS_ENABLED(CONFIG_BT_LEDS) 429 struct led_trigger *power_led; 430 #endif 431 432 int (*open)(struct hci_dev *hdev); 433 int (*close)(struct hci_dev *hdev); 434 int (*flush)(struct hci_dev *hdev); 435 int (*setup)(struct hci_dev *hdev); 436 int (*shutdown)(struct hci_dev *hdev); 437 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 438 void (*notify)(struct hci_dev *hdev, unsigned int evt); 439 void (*hw_error)(struct hci_dev *hdev, u8 code); 440 int (*post_init)(struct hci_dev *hdev); 441 int (*set_diag)(struct hci_dev *hdev, bool enable); 442 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 443 void (*cmd_timeout)(struct hci_dev *hdev); 444 }; 445 446 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 447 448 struct hci_conn { 449 struct list_head list; 450 451 atomic_t refcnt; 452 453 bdaddr_t dst; 454 __u8 dst_type; 455 bdaddr_t src; 456 __u8 src_type; 457 bdaddr_t init_addr; 458 __u8 init_addr_type; 459 bdaddr_t resp_addr; 460 __u8 resp_addr_type; 461 __u16 handle; 462 __u16 state; 463 __u8 mode; 464 __u8 type; 465 __u8 role; 466 bool out; 467 __u8 attempt; 468 __u8 dev_class[3]; 469 __u8 features[HCI_MAX_PAGES][8]; 470 __u16 pkt_type; 471 __u16 link_policy; 472 __u8 key_type; 473 __u8 auth_type; 474 __u8 sec_level; 475 __u8 pending_sec_level; 476 __u8 pin_length; 477 __u8 enc_key_size; 478 __u8 io_capability; 479 __u32 passkey_notify; 480 __u8 passkey_entered; 481 __u16 disc_timeout; 482 __u16 conn_timeout; 483 __u16 setting; 484 __u16 le_conn_min_interval; 485 __u16 le_conn_max_interval; 486 __u16 le_conn_interval; 487 __u16 le_conn_latency; 488 __u16 le_supv_timeout; 489 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 490 __u8 le_adv_data_len; 491 __s8 rssi; 492 __s8 tx_power; 493 __s8 max_tx_power; 494 unsigned long flags; 495 496 __u32 clock; 497 __u16 clock_accuracy; 498 499 unsigned long conn_info_timestamp; 500 501 __u8 remote_cap; 502 __u8 remote_auth; 503 __u8 remote_id; 504 505 unsigned int sent; 506 507 struct sk_buff_head data_q; 508 struct list_head chan_list; 509 510 struct delayed_work disc_work; 511 struct delayed_work auto_accept_work; 512 struct delayed_work idle_work; 513 struct delayed_work le_conn_timeout; 514 struct work_struct le_scan_cleanup; 515 516 struct device dev; 517 struct dentry *debugfs; 518 519 struct hci_dev *hdev; 520 void *l2cap_data; 521 void *sco_data; 522 struct amp_mgr *amp_mgr; 523 524 struct hci_conn *link; 525 526 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 527 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 528 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 529 }; 530 531 struct hci_chan { 532 struct list_head list; 533 __u16 handle; 534 struct hci_conn *conn; 535 struct sk_buff_head data_q; 536 unsigned int sent; 537 __u8 state; 538 }; 539 540 struct hci_conn_params { 541 struct list_head list; 542 struct list_head action; 543 544 bdaddr_t addr; 545 u8 addr_type; 546 547 u16 conn_min_interval; 548 u16 conn_max_interval; 549 u16 conn_latency; 550 u16 supervision_timeout; 551 552 enum { 553 HCI_AUTO_CONN_DISABLED, 554 HCI_AUTO_CONN_REPORT, 555 HCI_AUTO_CONN_DIRECT, 556 HCI_AUTO_CONN_ALWAYS, 557 HCI_AUTO_CONN_LINK_LOSS, 558 HCI_AUTO_CONN_EXPLICIT, 559 } auto_connect; 560 561 struct hci_conn *conn; 562 bool explicit_connect; 563 }; 564 565 extern struct list_head hci_dev_list; 566 extern struct list_head hci_cb_list; 567 extern rwlock_t hci_dev_list_lock; 568 extern struct mutex hci_cb_list_lock; 569 570 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 571 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 572 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 573 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 574 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 575 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 576 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 577 578 #define hci_dev_clear_volatile_flags(hdev) \ 579 do { \ 580 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 581 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 582 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 583 } while (0) 584 585 /* ----- HCI interface to upper protocols ----- */ 586 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 587 int l2cap_disconn_ind(struct hci_conn *hcon); 588 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 589 590 #if IS_ENABLED(CONFIG_BT_BREDR) 591 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 592 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 593 #else 594 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 595 __u8 *flags) 596 { 597 return 0; 598 } 599 600 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 601 { 602 } 603 #endif 604 605 /* ----- Inquiry cache ----- */ 606 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 607 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 608 609 static inline void discovery_init(struct hci_dev *hdev) 610 { 611 hdev->discovery.state = DISCOVERY_STOPPED; 612 INIT_LIST_HEAD(&hdev->discovery.all); 613 INIT_LIST_HEAD(&hdev->discovery.unknown); 614 INIT_LIST_HEAD(&hdev->discovery.resolve); 615 hdev->discovery.report_invalid_rssi = true; 616 hdev->discovery.rssi = HCI_RSSI_INVALID; 617 } 618 619 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 620 { 621 hdev->discovery.result_filtering = false; 622 hdev->discovery.report_invalid_rssi = true; 623 hdev->discovery.rssi = HCI_RSSI_INVALID; 624 hdev->discovery.uuid_count = 0; 625 kfree(hdev->discovery.uuids); 626 hdev->discovery.uuids = NULL; 627 hdev->discovery.scan_start = 0; 628 hdev->discovery.scan_duration = 0; 629 } 630 631 bool hci_discovery_active(struct hci_dev *hdev); 632 633 void hci_discovery_set_state(struct hci_dev *hdev, int state); 634 635 static inline int inquiry_cache_empty(struct hci_dev *hdev) 636 { 637 return list_empty(&hdev->discovery.all); 638 } 639 640 static inline long inquiry_cache_age(struct hci_dev *hdev) 641 { 642 struct discovery_state *c = &hdev->discovery; 643 return jiffies - c->timestamp; 644 } 645 646 static inline long inquiry_entry_age(struct inquiry_entry *e) 647 { 648 return jiffies - e->timestamp; 649 } 650 651 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 652 bdaddr_t *bdaddr); 653 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 654 bdaddr_t *bdaddr); 655 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 656 bdaddr_t *bdaddr, 657 int state); 658 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 659 struct inquiry_entry *ie); 660 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 661 bool name_known); 662 void hci_inquiry_cache_flush(struct hci_dev *hdev); 663 664 /* ----- HCI Connections ----- */ 665 enum { 666 HCI_CONN_AUTH_PEND, 667 HCI_CONN_REAUTH_PEND, 668 HCI_CONN_ENCRYPT_PEND, 669 HCI_CONN_RSWITCH_PEND, 670 HCI_CONN_MODE_CHANGE_PEND, 671 HCI_CONN_SCO_SETUP_PEND, 672 HCI_CONN_MGMT_CONNECTED, 673 HCI_CONN_SSP_ENABLED, 674 HCI_CONN_SC_ENABLED, 675 HCI_CONN_AES_CCM, 676 HCI_CONN_POWER_SAVE, 677 HCI_CONN_FLUSH_KEY, 678 HCI_CONN_ENCRYPT, 679 HCI_CONN_AUTH, 680 HCI_CONN_SECURE, 681 HCI_CONN_FIPS, 682 HCI_CONN_STK_ENCRYPT, 683 HCI_CONN_AUTH_INITIATOR, 684 HCI_CONN_DROP, 685 HCI_CONN_PARAM_REMOVAL_PEND, 686 HCI_CONN_NEW_LINK_KEY, 687 HCI_CONN_SCANNING, 688 HCI_CONN_AUTH_FAILURE, 689 }; 690 691 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 692 { 693 struct hci_dev *hdev = conn->hdev; 694 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 695 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 696 } 697 698 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 699 { 700 struct hci_dev *hdev = conn->hdev; 701 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 702 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 703 } 704 705 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 706 { 707 struct hci_conn_hash *h = &hdev->conn_hash; 708 list_add_rcu(&c->list, &h->list); 709 switch (c->type) { 710 case ACL_LINK: 711 h->acl_num++; 712 break; 713 case AMP_LINK: 714 h->amp_num++; 715 break; 716 case LE_LINK: 717 h->le_num++; 718 if (c->role == HCI_ROLE_SLAVE) 719 h->le_num_slave++; 720 break; 721 case SCO_LINK: 722 case ESCO_LINK: 723 h->sco_num++; 724 break; 725 } 726 } 727 728 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 729 { 730 struct hci_conn_hash *h = &hdev->conn_hash; 731 732 list_del_rcu(&c->list); 733 synchronize_rcu(); 734 735 switch (c->type) { 736 case ACL_LINK: 737 h->acl_num--; 738 break; 739 case AMP_LINK: 740 h->amp_num--; 741 break; 742 case LE_LINK: 743 h->le_num--; 744 if (c->role == HCI_ROLE_SLAVE) 745 h->le_num_slave--; 746 break; 747 case SCO_LINK: 748 case ESCO_LINK: 749 h->sco_num--; 750 break; 751 } 752 } 753 754 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 755 { 756 struct hci_conn_hash *h = &hdev->conn_hash; 757 switch (type) { 758 case ACL_LINK: 759 return h->acl_num; 760 case AMP_LINK: 761 return h->amp_num; 762 case LE_LINK: 763 return h->le_num; 764 case SCO_LINK: 765 case ESCO_LINK: 766 return h->sco_num; 767 default: 768 return 0; 769 } 770 } 771 772 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 773 { 774 struct hci_conn_hash *c = &hdev->conn_hash; 775 776 return c->acl_num + c->amp_num + c->sco_num + c->le_num; 777 } 778 779 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 780 { 781 struct hci_conn_hash *h = &hdev->conn_hash; 782 struct hci_conn *c; 783 __u8 type = INVALID_LINK; 784 785 rcu_read_lock(); 786 787 list_for_each_entry_rcu(c, &h->list, list) { 788 if (c->handle == handle) { 789 type = c->type; 790 break; 791 } 792 } 793 794 rcu_read_unlock(); 795 796 return type; 797 } 798 799 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 800 __u16 handle) 801 { 802 struct hci_conn_hash *h = &hdev->conn_hash; 803 struct hci_conn *c; 804 805 rcu_read_lock(); 806 807 list_for_each_entry_rcu(c, &h->list, list) { 808 if (c->handle == handle) { 809 rcu_read_unlock(); 810 return c; 811 } 812 } 813 rcu_read_unlock(); 814 815 return NULL; 816 } 817 818 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 819 __u8 type, bdaddr_t *ba) 820 { 821 struct hci_conn_hash *h = &hdev->conn_hash; 822 struct hci_conn *c; 823 824 rcu_read_lock(); 825 826 list_for_each_entry_rcu(c, &h->list, list) { 827 if (c->type == type && !bacmp(&c->dst, ba)) { 828 rcu_read_unlock(); 829 return c; 830 } 831 } 832 833 rcu_read_unlock(); 834 835 return NULL; 836 } 837 838 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 839 bdaddr_t *ba, 840 __u8 ba_type) 841 { 842 struct hci_conn_hash *h = &hdev->conn_hash; 843 struct hci_conn *c; 844 845 rcu_read_lock(); 846 847 list_for_each_entry_rcu(c, &h->list, list) { 848 if (c->type != LE_LINK) 849 continue; 850 851 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 852 rcu_read_unlock(); 853 return c; 854 } 855 } 856 857 rcu_read_unlock(); 858 859 return NULL; 860 } 861 862 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 863 __u8 type, __u16 state) 864 { 865 struct hci_conn_hash *h = &hdev->conn_hash; 866 struct hci_conn *c; 867 868 rcu_read_lock(); 869 870 list_for_each_entry_rcu(c, &h->list, list) { 871 if (c->type == type && c->state == state) { 872 rcu_read_unlock(); 873 return c; 874 } 875 } 876 877 rcu_read_unlock(); 878 879 return NULL; 880 } 881 882 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 883 { 884 struct hci_conn_hash *h = &hdev->conn_hash; 885 struct hci_conn *c; 886 887 rcu_read_lock(); 888 889 list_for_each_entry_rcu(c, &h->list, list) { 890 if (c->type == LE_LINK && c->state == BT_CONNECT && 891 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 892 rcu_read_unlock(); 893 return c; 894 } 895 } 896 897 rcu_read_unlock(); 898 899 return NULL; 900 } 901 902 int hci_disconnect(struct hci_conn *conn, __u8 reason); 903 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 904 void hci_sco_setup(struct hci_conn *conn, __u8 status); 905 906 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 907 u8 role); 908 int hci_conn_del(struct hci_conn *conn); 909 void hci_conn_hash_flush(struct hci_dev *hdev); 910 void hci_conn_check_pending(struct hci_dev *hdev); 911 912 struct hci_chan *hci_chan_create(struct hci_conn *conn); 913 void hci_chan_del(struct hci_chan *chan); 914 void hci_chan_list_flush(struct hci_conn *conn); 915 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 916 917 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 918 u8 dst_type, u8 sec_level, 919 u16 conn_timeout); 920 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 921 u8 dst_type, u8 sec_level, u16 conn_timeout, 922 u8 role, bdaddr_t *direct_rpa); 923 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 924 u8 sec_level, u8 auth_type); 925 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 926 __u16 setting); 927 int hci_conn_check_link_mode(struct hci_conn *conn); 928 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 929 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 930 bool initiator); 931 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 932 933 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 934 935 void hci_le_conn_failed(struct hci_conn *conn, u8 status); 936 937 /* 938 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 939 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 940 * working or anything else. They just guarantee that the object is available 941 * and can be dereferenced. So you can use its locks, local variables and any 942 * other constant data. 943 * Before accessing runtime data, you _must_ lock the object and then check that 944 * it is still running. As soon as you release the locks, the connection might 945 * get dropped, though. 946 * 947 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 948 * how long the underlying connection is held. So every channel that runs on the 949 * hci_conn object calls this to prevent the connection from disappearing. As 950 * long as you hold a device, you must also guarantee that you have a valid 951 * reference to the device via hci_conn_get() (or the initial reference from 952 * hci_conn_add()). 953 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 954 * break because nobody cares for that. But this means, we cannot use 955 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 956 */ 957 958 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 959 { 960 get_device(&conn->dev); 961 return conn; 962 } 963 964 static inline void hci_conn_put(struct hci_conn *conn) 965 { 966 put_device(&conn->dev); 967 } 968 969 static inline void hci_conn_hold(struct hci_conn *conn) 970 { 971 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 972 973 atomic_inc(&conn->refcnt); 974 cancel_delayed_work(&conn->disc_work); 975 } 976 977 static inline void hci_conn_drop(struct hci_conn *conn) 978 { 979 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 980 981 if (atomic_dec_and_test(&conn->refcnt)) { 982 unsigned long timeo; 983 984 switch (conn->type) { 985 case ACL_LINK: 986 case LE_LINK: 987 cancel_delayed_work(&conn->idle_work); 988 if (conn->state == BT_CONNECTED) { 989 timeo = conn->disc_timeout; 990 if (!conn->out) 991 timeo *= 2; 992 } else { 993 timeo = 0; 994 } 995 break; 996 997 case AMP_LINK: 998 timeo = conn->disc_timeout; 999 break; 1000 1001 default: 1002 timeo = 0; 1003 break; 1004 } 1005 1006 cancel_delayed_work(&conn->disc_work); 1007 queue_delayed_work(conn->hdev->workqueue, 1008 &conn->disc_work, timeo); 1009 } 1010 } 1011 1012 /* ----- HCI Devices ----- */ 1013 static inline void hci_dev_put(struct hci_dev *d) 1014 { 1015 BT_DBG("%s orig refcnt %d", d->name, 1016 kref_read(&d->dev.kobj.kref)); 1017 1018 put_device(&d->dev); 1019 } 1020 1021 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1022 { 1023 BT_DBG("%s orig refcnt %d", d->name, 1024 kref_read(&d->dev.kobj.kref)); 1025 1026 get_device(&d->dev); 1027 return d; 1028 } 1029 1030 #define hci_dev_lock(d) mutex_lock(&d->lock) 1031 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1032 1033 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1034 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1035 1036 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1037 { 1038 return dev_get_drvdata(&hdev->dev); 1039 } 1040 1041 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1042 { 1043 dev_set_drvdata(&hdev->dev, data); 1044 } 1045 1046 struct hci_dev *hci_dev_get(int index); 1047 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1048 1049 struct hci_dev *hci_alloc_dev(void); 1050 void hci_free_dev(struct hci_dev *hdev); 1051 int hci_register_dev(struct hci_dev *hdev); 1052 void hci_unregister_dev(struct hci_dev *hdev); 1053 int hci_suspend_dev(struct hci_dev *hdev); 1054 int hci_resume_dev(struct hci_dev *hdev); 1055 int hci_reset_dev(struct hci_dev *hdev); 1056 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1057 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1058 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1059 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1060 int hci_dev_open(__u16 dev); 1061 int hci_dev_close(__u16 dev); 1062 int hci_dev_do_close(struct hci_dev *hdev); 1063 int hci_dev_reset(__u16 dev); 1064 int hci_dev_reset_stat(__u16 dev); 1065 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1066 int hci_get_dev_list(void __user *arg); 1067 int hci_get_dev_info(void __user *arg); 1068 int hci_get_conn_list(void __user *arg); 1069 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1070 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1071 int hci_inquiry(void __user *arg); 1072 1073 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1074 bdaddr_t *bdaddr, u8 type); 1075 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1076 struct list_head *list, bdaddr_t *bdaddr, 1077 u8 type); 1078 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1079 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1080 u8 type, u8 *peer_irk, u8 *local_irk); 1081 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1082 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1083 u8 type); 1084 void hci_bdaddr_list_clear(struct list_head *list); 1085 1086 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1087 bdaddr_t *addr, u8 addr_type); 1088 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1089 bdaddr_t *addr, u8 addr_type); 1090 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1091 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1092 1093 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1094 bdaddr_t *addr, 1095 u8 addr_type); 1096 1097 void hci_uuids_clear(struct hci_dev *hdev); 1098 1099 void hci_link_keys_clear(struct hci_dev *hdev); 1100 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1101 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1102 bdaddr_t *bdaddr, u8 *val, u8 type, 1103 u8 pin_len, bool *persistent); 1104 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1105 u8 addr_type, u8 type, u8 authenticated, 1106 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1107 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1108 u8 addr_type, u8 role); 1109 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1110 void hci_smp_ltks_clear(struct hci_dev *hdev); 1111 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1112 1113 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1114 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1115 u8 addr_type); 1116 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1117 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1118 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1119 void hci_smp_irks_clear(struct hci_dev *hdev); 1120 1121 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1122 1123 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1124 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1125 bdaddr_t *bdaddr, u8 bdaddr_type); 1126 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1127 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1128 u8 *hash256, u8 *rand256); 1129 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1130 u8 bdaddr_type); 1131 1132 void hci_adv_instances_clear(struct hci_dev *hdev); 1133 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1134 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1135 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, 1136 u16 adv_data_len, u8 *adv_data, 1137 u16 scan_rsp_len, u8 *scan_rsp_data, 1138 u16 timeout, u16 duration); 1139 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1140 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1141 1142 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1143 1144 void hci_init_sysfs(struct hci_dev *hdev); 1145 void hci_conn_init_sysfs(struct hci_conn *conn); 1146 void hci_conn_add_sysfs(struct hci_conn *conn); 1147 void hci_conn_del_sysfs(struct hci_conn *conn); 1148 1149 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1150 1151 /* ----- LMP capabilities ----- */ 1152 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1153 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1154 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1155 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1156 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1157 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1158 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1159 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1160 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1161 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1162 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1163 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1164 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1165 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1166 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1167 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1168 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1169 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1170 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1171 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1172 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1173 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1174 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1175 1176 /* ----- Extended LMP capabilities ----- */ 1177 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) 1178 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) 1179 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1180 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1181 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1182 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1183 1184 /* ----- Host capabilities ----- */ 1185 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1186 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1187 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1188 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1189 1190 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1191 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1192 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1193 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1194 1195 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1196 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1197 1198 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1199 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1200 1201 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1202 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1203 1204 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1205 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1206 ((dev)->commands[37] & 0x40)) 1207 /* Use ext create connection if command is supported */ 1208 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1209 1210 /* Extended advertising support */ 1211 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1212 1213 /* ----- HCI protocols ----- */ 1214 #define HCI_PROTO_DEFER 0x01 1215 1216 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1217 __u8 type, __u8 *flags) 1218 { 1219 switch (type) { 1220 case ACL_LINK: 1221 return l2cap_connect_ind(hdev, bdaddr); 1222 1223 case SCO_LINK: 1224 case ESCO_LINK: 1225 return sco_connect_ind(hdev, bdaddr, flags); 1226 1227 default: 1228 BT_ERR("unknown link type %d", type); 1229 return -EINVAL; 1230 } 1231 } 1232 1233 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1234 { 1235 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1236 return HCI_ERROR_REMOTE_USER_TERM; 1237 1238 return l2cap_disconn_ind(conn); 1239 } 1240 1241 /* ----- HCI callbacks ----- */ 1242 struct hci_cb { 1243 struct list_head list; 1244 1245 char *name; 1246 1247 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1248 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1249 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1250 __u8 encrypt); 1251 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1252 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1253 }; 1254 1255 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1256 { 1257 struct hci_cb *cb; 1258 1259 mutex_lock(&hci_cb_list_lock); 1260 list_for_each_entry(cb, &hci_cb_list, list) { 1261 if (cb->connect_cfm) 1262 cb->connect_cfm(conn, status); 1263 } 1264 mutex_unlock(&hci_cb_list_lock); 1265 1266 if (conn->connect_cfm_cb) 1267 conn->connect_cfm_cb(conn, status); 1268 } 1269 1270 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 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->disconn_cfm) 1277 cb->disconn_cfm(conn, reason); 1278 } 1279 mutex_unlock(&hci_cb_list_lock); 1280 1281 if (conn->disconn_cfm_cb) 1282 conn->disconn_cfm_cb(conn, reason); 1283 } 1284 1285 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1286 { 1287 struct hci_cb *cb; 1288 __u8 encrypt; 1289 1290 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1291 return; 1292 1293 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1294 1295 mutex_lock(&hci_cb_list_lock); 1296 list_for_each_entry(cb, &hci_cb_list, list) { 1297 if (cb->security_cfm) 1298 cb->security_cfm(conn, status, encrypt); 1299 } 1300 mutex_unlock(&hci_cb_list_lock); 1301 1302 if (conn->security_cfm_cb) 1303 conn->security_cfm_cb(conn, status); 1304 } 1305 1306 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 1307 __u8 encrypt) 1308 { 1309 struct hci_cb *cb; 1310 1311 if (conn->sec_level == BT_SECURITY_SDP) 1312 conn->sec_level = BT_SECURITY_LOW; 1313 1314 if (conn->pending_sec_level > conn->sec_level) 1315 conn->sec_level = conn->pending_sec_level; 1316 1317 mutex_lock(&hci_cb_list_lock); 1318 list_for_each_entry(cb, &hci_cb_list, list) { 1319 if (cb->security_cfm) 1320 cb->security_cfm(conn, status, encrypt); 1321 } 1322 mutex_unlock(&hci_cb_list_lock); 1323 1324 if (conn->security_cfm_cb) 1325 conn->security_cfm_cb(conn, status); 1326 } 1327 1328 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1329 { 1330 struct hci_cb *cb; 1331 1332 mutex_lock(&hci_cb_list_lock); 1333 list_for_each_entry(cb, &hci_cb_list, list) { 1334 if (cb->key_change_cfm) 1335 cb->key_change_cfm(conn, status); 1336 } 1337 mutex_unlock(&hci_cb_list_lock); 1338 } 1339 1340 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1341 __u8 role) 1342 { 1343 struct hci_cb *cb; 1344 1345 mutex_lock(&hci_cb_list_lock); 1346 list_for_each_entry(cb, &hci_cb_list, list) { 1347 if (cb->role_switch_cfm) 1348 cb->role_switch_cfm(conn, status, role); 1349 } 1350 mutex_unlock(&hci_cb_list_lock); 1351 } 1352 1353 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type, 1354 size_t *data_len) 1355 { 1356 size_t parsed = 0; 1357 1358 if (eir_len < 2) 1359 return NULL; 1360 1361 while (parsed < eir_len - 1) { 1362 u8 field_len = eir[0]; 1363 1364 if (field_len == 0) 1365 break; 1366 1367 parsed += field_len + 1; 1368 1369 if (parsed > eir_len) 1370 break; 1371 1372 if (eir[1] != type) { 1373 eir += field_len + 1; 1374 continue; 1375 } 1376 1377 /* Zero length data */ 1378 if (field_len == 1) 1379 return NULL; 1380 1381 if (data_len) 1382 *data_len = field_len - 1; 1383 1384 return &eir[2]; 1385 } 1386 1387 return NULL; 1388 } 1389 1390 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1391 { 1392 if (addr_type != ADDR_LE_DEV_RANDOM) 1393 return false; 1394 1395 if ((bdaddr->b[5] & 0xc0) == 0x40) 1396 return true; 1397 1398 return false; 1399 } 1400 1401 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1402 { 1403 if (addr_type == ADDR_LE_DEV_PUBLIC) 1404 return true; 1405 1406 /* Check for Random Static address type */ 1407 if ((addr->b[5] & 0xc0) == 0xc0) 1408 return true; 1409 1410 return false; 1411 } 1412 1413 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1414 bdaddr_t *bdaddr, u8 addr_type) 1415 { 1416 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1417 return NULL; 1418 1419 return hci_find_irk_by_rpa(hdev, bdaddr); 1420 } 1421 1422 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1423 u16 to_multiplier) 1424 { 1425 u16 max_latency; 1426 1427 if (min > max || min < 6 || max > 3200) 1428 return -EINVAL; 1429 1430 if (to_multiplier < 10 || to_multiplier > 3200) 1431 return -EINVAL; 1432 1433 if (max >= to_multiplier * 8) 1434 return -EINVAL; 1435 1436 max_latency = (to_multiplier * 4 / max) - 1; 1437 if (latency > 499 || latency > max_latency) 1438 return -EINVAL; 1439 1440 return 0; 1441 } 1442 1443 int hci_register_cb(struct hci_cb *hcb); 1444 int hci_unregister_cb(struct hci_cb *hcb); 1445 1446 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1447 const void *param, u32 timeout); 1448 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, 1449 const void *param, u8 event, u32 timeout); 1450 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 1451 const void *param); 1452 1453 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1454 const void *param); 1455 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1456 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1457 1458 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1459 1460 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1461 const void *param, u32 timeout); 1462 1463 /* ----- HCI Sockets ----- */ 1464 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1465 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1466 int flag, struct sock *skip_sk); 1467 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1468 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 1469 void *data, u16 data_len, ktime_t tstamp, 1470 int flag, struct sock *skip_sk); 1471 1472 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1473 1474 #define HCI_MGMT_VAR_LEN BIT(0) 1475 #define HCI_MGMT_NO_HDEV BIT(1) 1476 #define HCI_MGMT_UNTRUSTED BIT(2) 1477 #define HCI_MGMT_UNCONFIGURED BIT(3) 1478 1479 struct hci_mgmt_handler { 1480 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1481 u16 data_len); 1482 size_t data_len; 1483 unsigned long flags; 1484 }; 1485 1486 struct hci_mgmt_chan { 1487 struct list_head list; 1488 unsigned short channel; 1489 size_t handler_count; 1490 const struct hci_mgmt_handler *handlers; 1491 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1492 }; 1493 1494 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1495 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1496 1497 /* Management interface */ 1498 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1499 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1500 BIT(BDADDR_LE_RANDOM)) 1501 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1502 BIT(BDADDR_LE_PUBLIC) | \ 1503 BIT(BDADDR_LE_RANDOM)) 1504 1505 /* These LE scan and inquiry parameters were chosen according to LE General 1506 * Discovery Procedure specification. 1507 */ 1508 #define DISCOV_LE_SCAN_WIN 0x12 1509 #define DISCOV_LE_SCAN_INT 0x12 1510 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 1511 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 1512 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 1513 #define DISCOV_BREDR_INQUIRY_LEN 0x08 1514 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 1515 1516 void mgmt_fill_version_info(void *ver); 1517 int mgmt_new_settings(struct hci_dev *hdev); 1518 void mgmt_index_added(struct hci_dev *hdev); 1519 void mgmt_index_removed(struct hci_dev *hdev); 1520 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 1521 void mgmt_power_on(struct hci_dev *hdev, int err); 1522 void __mgmt_power_off(struct hci_dev *hdev); 1523 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 1524 bool persistent); 1525 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 1526 u32 flags, u8 *name, u8 name_len); 1527 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1528 u8 link_type, u8 addr_type, u8 reason, 1529 bool mgmt_connected); 1530 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1531 u8 link_type, u8 addr_type, u8 status); 1532 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1533 u8 addr_type, u8 status); 1534 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1535 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1536 u8 status); 1537 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1538 u8 status); 1539 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1540 u8 link_type, u8 addr_type, u32 value, 1541 u8 confirm_hint); 1542 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1543 u8 link_type, u8 addr_type, u8 status); 1544 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1545 u8 link_type, u8 addr_type, u8 status); 1546 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1547 u8 link_type, u8 addr_type); 1548 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1549 u8 link_type, u8 addr_type, u8 status); 1550 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1551 u8 link_type, u8 addr_type, u8 status); 1552 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1553 u8 link_type, u8 addr_type, u32 passkey, 1554 u8 entered); 1555 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 1556 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1557 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1558 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1559 u8 status); 1560 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1561 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 1562 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 1563 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1564 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 1565 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len); 1566 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1567 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1568 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1569 bool mgmt_powering_down(struct hci_dev *hdev); 1570 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 1571 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 1572 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 1573 bool persistent); 1574 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 1575 u8 bdaddr_type, u8 store_hint, u16 min_interval, 1576 u16 max_interval, u16 latency, u16 timeout); 1577 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 1578 bool mgmt_get_connectable(struct hci_dev *hdev); 1579 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status); 1580 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status); 1581 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 1582 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 1583 u8 instance); 1584 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 1585 u8 instance); 1586 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 1587 1588 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 1589 u16 to_multiplier); 1590 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 1591 __u8 ltk[16], __u8 key_size); 1592 1593 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 1594 u8 *bdaddr_type); 1595 1596 #define SCO_AIRMODE_MASK 0x0003 1597 #define SCO_AIRMODE_CVSD 0x0000 1598 #define SCO_AIRMODE_TRANSP 0x0003 1599 1600 #endif /* __HCI_CORE_H */ 1601