1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 /* 39 * hci.h 40 * 41 * Created by Matthias Ringwald on 4/29/09. 42 * 43 */ 44 45 #ifndef HCI_H 46 #define HCI_H 47 48 #include "btstack_config.h" 49 50 #include "btstack_chipset.h" 51 #include "btstack_control.h" 52 #include "btstack_linked_list.h" 53 #include "btstack_util.h" 54 #include "classic/btstack_link_key_db.h" 55 #include "hci_cmd.h" 56 #include "gap.h" 57 #include "hci_transport.h" 58 #include "btstack_run_loop.h" 59 60 #ifdef ENABLE_BLE 61 #include "ble/att_db.h" 62 #endif 63 64 #include <stdint.h> 65 #include <stdlib.h> 66 #include <stdarg.h> 67 68 #if defined __cplusplus 69 extern "C" { 70 #endif 71 72 // packet buffer sizes 73 #define HCI_CMD_HEADER_SIZE 3 74 #define HCI_ACL_HEADER_SIZE 4 75 #define HCI_SCO_HEADER_SIZE 3 76 #define HCI_EVENT_HEADER_SIZE 2 77 78 #define HCI_EVENT_PAYLOAD_SIZE 255 79 #define HCI_CMD_PAYLOAD_SIZE 255 80 81 // Max HCI Command LE payload size: 82 // 64 from LE Generate DHKey command 83 // 32 from LE Encrypt command 84 #if defined(ENABLE_LE_SECURE_CONNECTIONS) && !defined(ENABLE_MICRO_ECC_FOR_LE_SECURE_CONNECTIONS) 85 #define HCI_CMD_PAYLOAD_SIZE_LE 64 86 #else 87 #define HCI_CMD_PAYLOAD_SIZE_LE 32 88 #endif 89 90 // HCI_ACL_PAYLOAD_SIZE is configurable and defined in config.h 91 // addition byte in even to terminate remote name request with '\0' 92 #define HCI_EVENT_BUFFER_SIZE (HCI_EVENT_HEADER_SIZE + HCI_EVENT_PAYLOAD_SIZE + 1) 93 94 #ifdef ENABLE_CLASSIC 95 #define HCI_CMD_BUFFER_SIZE (HCI_CMD_HEADER_SIZE + HCI_CMD_PAYLOAD_SIZE) 96 #else 97 #define HCI_CMD_BUFFER_SIZE (HCI_CMD_HEADER_SIZE + HCI_CMD_PAYLOAD_SIZE_LE) 98 #endif 99 100 #define HCI_ACL_BUFFER_SIZE (HCI_ACL_HEADER_SIZE + HCI_ACL_PAYLOAD_SIZE) 101 102 // size of hci incoming buffer, big enough for event or acl packet without H4 packet type 103 #ifdef HCI_INCOMING_PACKET_BUFFER_SIZE 104 #if HCI_INCOMING_PACKET_BUFFER_SIZE < HCI_ACL_BUFFER_SIZE 105 #error HCI_INCOMING_PACKET_BUFFER_SIZE must be equal or larger than HCI_ACL_BUFFER_SIZE 106 #endif 107 #if HCI_INCOMING_PACKET_BUFFER_SIZE < HCI_EVENT_BUFFER_SIZE 108 #error HCI_INCOMING_PACKET_BUFFER_SIZE must be equal or larger than HCI_EVENT_BUFFER_SIZE 109 #endif 110 #else 111 #if HCI_ACL_BUFFER_SIZE > HCI_EVENT_BUFFER_SIZE 112 #define HCI_INCOMING_PACKET_BUFFER_SIZE HCI_ACL_BUFFER_SIZE 113 #else 114 #define HCI_INCOMING_PACKET_BUFFER_SIZE HCI_EVENT_BUFFER_SIZE 115 #endif 116 #endif 117 118 // size of hci outgoing buffer, big enough for command or acl packet without H4 packet type 119 #ifdef HCI_OUTGOING_PACKET_BUFFER_SIZE 120 #if HCI_OUTGOING_PACKET_BUFFER_SIZE < HCI_ACL_BUFFER_SIZE 121 #error HCI_OUTGOING_PACKET_BUFFER_SIZE must be equal or larger than HCI_ACL_BUFFER_SIZE 122 #endif 123 #if HCI_OUTGOING_PACKET_BUFFER_SIZE < HCI_CMD_BUFFER_SIZE 124 #error HCI_OUTGOING_PACKET_BUFFER_SIZE must be equal or larger than HCI_CMD_BUFFER_SIZE 125 #endif 126 #else 127 #if HCI_ACL_BUFFER_SIZE > HCI_CMD_BUFFER_SIZE 128 #define HCI_OUTGOING_PACKET_BUFFER_SIZE HCI_ACL_BUFFER_SIZE 129 #else 130 #define HCI_OUTGOING_PACKET_BUFFER_SIZE HCI_CMD_BUFFER_SIZE 131 #endif 132 #endif 133 134 // additional pre-buffer space for packets to Bluetooth module, for now, used for HCI Transport H4 DMA 135 #ifndef HCI_OUTGOING_PRE_BUFFER_SIZE 136 #ifdef HAVE_HOST_CONTROLLER_API 137 #define HCI_OUTGOING_PRE_BUFFER_SIZE 0 138 #else 139 #define HCI_OUTGOING_PRE_BUFFER_SIZE 1 140 #endif 141 #endif 142 143 // BNEP may uncompress the IP Header by 16 bytes, GATT Client requires two additional bytes for long characteristic reads 144 #ifndef HCI_INCOMING_PRE_BUFFER_SIZE 145 #ifdef ENABLE_CLASSIC 146 #define HCI_INCOMING_PRE_BUFFER_SIZE (16 - HCI_ACL_HEADER_SIZE - 4) 147 #else 148 #define HCI_INCOMING_PRE_BUFFER_SIZE 2 149 #endif 150 #endif 151 152 // 153 #define IS_COMMAND(packet, command) ( little_endian_read_16(packet,0) == command.opcode ) 154 155 // check if command complete event for given command 156 #define HCI_EVENT_IS_COMMAND_COMPLETE(event,cmd) ( (event[0] == HCI_EVENT_COMMAND_COMPLETE) && (little_endian_read_16(event,3) == cmd.opcode) ) 157 #define HCI_EVENT_IS_COMMAND_STATUS(event,cmd) ( (event[0] == HCI_EVENT_COMMAND_STATUS) && (little_endian_read_16(event,4) == cmd.opcode) ) 158 159 // Code+Len=2, Pkts+Opcode=3; total=5 160 #define OFFSET_OF_DATA_IN_COMMAND_COMPLETE 5 161 162 // ACL Packet 163 #define READ_ACL_CONNECTION_HANDLE( buffer ) ( little_endian_read_16(buffer,0) & 0x0fff) 164 #define READ_SCO_CONNECTION_HANDLE( buffer ) ( little_endian_read_16(buffer,0) & 0x0fff) 165 #define READ_ACL_FLAGS( buffer ) ( buffer[1] >> 4 ) 166 #define READ_ACL_LENGTH( buffer ) (little_endian_read_16(buffer, 2)) 167 168 // Sneak peak into L2CAP Packet 169 #define READ_L2CAP_LENGTH(buffer) ( little_endian_read_16(buffer, 4)) 170 #define READ_L2CAP_CHANNEL_ID(buffer) ( little_endian_read_16(buffer, 6)) 171 172 /** 173 * LE connection parameter update state 174 */ 175 176 typedef enum { 177 CON_PARAMETER_UPDATE_NONE, 178 // L2CAP 179 CON_PARAMETER_UPDATE_SEND_REQUEST, 180 CON_PARAMETER_UPDATE_SEND_RESPONSE, 181 CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS, 182 CON_PARAMETER_UPDATE_DENY, 183 // HCI - in respnose to HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST 184 CON_PARAMETER_UPDATE_REPLY, 185 CON_PARAMETER_UPDATE_NEGATIVE_REPLY, 186 } le_con_parameter_update_state_t; 187 188 // Authentication flags 189 typedef enum { 190 AUTH_FLAGS_NONE = 0x0000, 191 RECV_LINK_KEY_REQUEST = 0x0001, 192 HANDLE_LINK_KEY_REQUEST = 0x0002, 193 SENT_LINK_KEY_REPLY = 0x0004, 194 SENT_LINK_KEY_NEGATIVE_REQUEST = 0x0008, 195 RECV_LINK_KEY_NOTIFICATION = 0x0010, 196 DENY_PIN_CODE_REQUEST = 0x0040, 197 RECV_IO_CAPABILITIES_REQUEST = 0x0080, 198 SEND_IO_CAPABILITIES_REPLY = 0x0100, 199 SEND_USER_CONFIRM_REPLY = 0x0200, 200 SEND_USER_PASSKEY_REPLY = 0x0400, 201 202 // pairing status 203 LEGACY_PAIRING_ACTIVE = 0x2000, 204 SSP_PAIRING_ACTIVE = 0x4000, 205 206 // connection status 207 CONNECTION_ENCRYPTED = 0x8000, 208 209 // errands 210 READ_RSSI = 0x10000, 211 WRITE_SUPERVISION_TIMEOUT = 0x20000, 212 213 } hci_authentication_flags_t; 214 215 /** 216 * Connection State 217 */ 218 typedef enum { 219 SEND_CREATE_CONNECTION = 0, 220 SENT_CREATE_CONNECTION, 221 SEND_CANCEL_CONNECTION, 222 SENT_CANCEL_CONNECTION, 223 RECEIVED_CONNECTION_REQUEST, 224 ACCEPTED_CONNECTION_REQUEST, 225 REJECTED_CONNECTION_REQUEST, 226 OPEN, 227 SEND_DISCONNECT, 228 SENT_DISCONNECT, 229 RECEIVED_DISCONNECTION_COMPLETE 230 } CONNECTION_STATE; 231 232 // bonding flags 233 enum { 234 BONDING_REQUEST_REMOTE_FEATURES_PAGE_0 = 0x0001, 235 BONDING_REQUEST_REMOTE_FEATURES_PAGE_1 = 0x0002, 236 BONDING_REQUEST_REMOTE_FEATURES_PAGE_2 = 0x0004, 237 BONDING_RECEIVED_REMOTE_FEATURES = 0x0008, 238 BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER = 0x0010, 239 BONDING_REMOTE_SUPPORTS_SSP_HOST = 0x0020, 240 BONDING_DISCONNECT_SECURITY_BLOCK = 0x0040, 241 BONDING_DISCONNECT_DEDICATED_DONE = 0x0080, 242 BONDING_SEND_AUTHENTICATE_REQUEST = 0x0100, 243 BONDING_SEND_ENCRYPTION_REQUEST = 0x0200, 244 BONDING_SEND_READ_ENCRYPTION_KEY_SIZE = 0x0400, 245 BONDING_DEDICATED = 0x0800, 246 BONDING_EMIT_COMPLETE_ON_DISCONNECT = 0x1000, 247 }; 248 249 typedef enum { 250 BLUETOOTH_OFF = 1, 251 BLUETOOTH_ON, 252 BLUETOOTH_ACTIVE 253 } BLUETOOTH_STATE; 254 255 typedef enum { 256 LE_CONNECTING_IDLE, 257 LE_CONNECTING_DIRECT, 258 LE_CONNECTING_WHITELIST, 259 } le_connecting_state_t; 260 261 #ifdef ENABLE_BLE 262 263 // 264 // SM internal types and globals 265 // 266 267 typedef enum { 268 269 // general states 270 SM_GENERAL_IDLE, 271 SM_GENERAL_SEND_PAIRING_FAILED, 272 SM_GENERAL_TIMEOUT, // no other security messages are exchanged 273 274 // Phase 1: Pairing Feature Exchange 275 SM_PH1_W4_USER_RESPONSE, 276 277 // Phase 2: Authenticating and Encrypting 278 279 // get random number for use as TK Passkey if we show it 280 SM_PH2_GET_RANDOM_TK, 281 SM_PH2_W4_RANDOM_TK, 282 283 // get local random number for confirm c1 284 SM_PH2_C1_GET_RANDOM_A, 285 SM_PH2_C1_W4_RANDOM_A, 286 SM_PH2_C1_GET_RANDOM_B, 287 SM_PH2_C1_W4_RANDOM_B, 288 289 // calculate confirm value for local side 290 SM_PH2_C1_GET_ENC_A, 291 SM_PH2_C1_W4_ENC_A, 292 293 // calculate confirm value for remote side 294 SM_PH2_C1_GET_ENC_C, 295 SM_PH2_C1_W4_ENC_C, 296 297 SM_PH2_C1_SEND_PAIRING_CONFIRM, 298 SM_PH2_SEND_PAIRING_RANDOM, 299 300 // calc STK 301 SM_PH2_CALC_STK, 302 SM_PH2_W4_STK, 303 304 SM_PH2_W4_CONNECTION_ENCRYPTED, 305 306 // Phase 3: Transport Specific Key Distribution 307 // calculate DHK, Y, EDIV, and LTK 308 SM_PH3_Y_GET_ENC, 309 SM_PH3_Y_W4_ENC, 310 SM_PH3_LTK_GET_ENC, 311 312 // exchange keys 313 SM_PH3_DISTRIBUTE_KEYS, 314 SM_PH3_RECEIVE_KEYS, 315 316 // RESPONDER ROLE 317 SM_RESPONDER_IDLE, 318 SM_RESPONDER_SEND_SECURITY_REQUEST, 319 SM_RESPONDER_PH0_RECEIVED_LTK_REQUEST, 320 SM_RESPONDER_PH0_RECEIVED_LTK_W4_IRK, 321 SM_RESPONDER_PH0_SEND_LTK_REQUESTED_NEGATIVE_REPLY, 322 SM_RESPONDER_PH1_W4_PAIRING_REQUEST, 323 SM_RESPONDER_PH1_PAIRING_REQUEST_RECEIVED, 324 SM_RESPONDER_PH1_SEND_PAIRING_RESPONSE, 325 SM_RESPONDER_PH1_W4_PAIRING_CONFIRM, 326 SM_RESPONDER_PH2_W4_PAIRING_RANDOM, 327 SM_RESPONDER_PH2_W4_LTK_REQUEST, 328 SM_RESPONDER_PH2_SEND_LTK_REPLY, 329 330 // Phase 4: re-establish previously distributed LTK 331 SM_RESPONDER_PH4_Y_GET_ENC, 332 SM_RESPONDER_PH4_Y_W4_ENC, 333 SM_RESPONDER_PH4_SEND_LTK_REPLY, 334 335 // INITITIATOR ROLE 336 SM_INITIATOR_CONNECTED, 337 SM_INITIATOR_PH0_HAS_LTK, 338 SM_INITIATOR_PH0_SEND_START_ENCRYPTION, 339 SM_INITIATOR_PH0_W4_CONNECTION_ENCRYPTED, 340 SM_INITIATOR_PH1_W2_SEND_PAIRING_REQUEST, 341 SM_INITIATOR_PH1_SEND_PAIRING_REQUEST, 342 SM_INITIATOR_PH1_W4_PAIRING_RESPONSE, 343 SM_INITIATOR_PH2_W4_PAIRING_CONFIRM, 344 SM_INITIATOR_PH2_W4_PAIRING_RANDOM, 345 SM_INITIATOR_PH3_SEND_START_ENCRYPTION, 346 347 // LE Secure Connections 348 SM_SC_RECEIVED_LTK_REQUEST, 349 SM_SC_SEND_PUBLIC_KEY_COMMAND, 350 SM_SC_W4_PUBLIC_KEY_COMMAND, 351 SM_SC_W4_LOCAL_NONCE, 352 SM_SC_W2_CMAC_FOR_CONFIRMATION, 353 SM_SC_W4_CMAC_FOR_CONFIRMATION, 354 SM_SC_SEND_CONFIRMATION, 355 SM_SC_W2_CMAC_FOR_CHECK_CONFIRMATION, 356 SM_SC_W4_CMAC_FOR_CHECK_CONFIRMATION, 357 SM_SC_W4_CONFIRMATION, 358 SM_SC_SEND_PAIRING_RANDOM, 359 SM_SC_W4_PAIRING_RANDOM, 360 SM_SC_W2_CALCULATE_G2, 361 SM_SC_W4_CALCULATE_G2, 362 SM_SC_W4_CALCULATE_DHKEY, 363 SM_SC_W2_CALCULATE_F5_SALT, 364 SM_SC_W4_CALCULATE_F5_SALT, 365 SM_SC_W2_CALCULATE_F5_MACKEY, 366 SM_SC_W4_CALCULATE_F5_MACKEY, 367 SM_SC_W2_CALCULATE_F5_LTK, 368 SM_SC_W4_CALCULATE_F5_LTK, 369 SM_SC_W2_CALCULATE_F6_FOR_DHKEY_CHECK, 370 SM_SC_W4_CALCULATE_F6_FOR_DHKEY_CHECK, 371 SM_SC_W2_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 372 SM_SC_W4_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 373 SM_SC_W4_USER_RESPONSE, 374 SM_SC_SEND_DHKEY_CHECK_COMMAND, 375 SM_SC_W4_DHKEY_CHECK_COMMAND, 376 SM_SC_W4_LTK_REQUEST_SC, 377 SM_SC_W2_CALCULATE_H6_ILK, 378 SM_SC_W4_CALCULATE_H6_ILK, 379 SM_SC_W2_CALCULATE_H6_BR_EDR_LINK_KEY, 380 SM_SC_W4_CALCULATE_H6_BR_EDR_LINK_KEY, 381 } security_manager_state_t; 382 383 typedef enum { 384 IRK_LOOKUP_IDLE, 385 IRK_LOOKUP_W4_READY, 386 IRK_LOOKUP_STARTED, 387 IRK_LOOKUP_SUCCEEDED, 388 IRK_LOOKUP_FAILED 389 } irk_lookup_state_t; 390 391 typedef uint8_t sm_pairing_packet_t[7]; 392 393 // connection info available as long as connection exists 394 typedef struct sm_connection { 395 hci_con_handle_t sm_handle; 396 uint8_t sm_role; // 0 - IamMaster, 1 = IamSlave 397 uint8_t sm_security_request_received; 398 uint8_t sm_pairing_requested; 399 uint8_t sm_peer_addr_type; 400 bd_addr_t sm_peer_address; 401 security_manager_state_t sm_engine_state; 402 irk_lookup_state_t sm_irk_lookup_state; 403 uint8_t sm_connection_encrypted; 404 uint8_t sm_connection_authenticated; // [0..1] 405 uint8_t sm_connection_sc; 406 uint8_t sm_actual_encryption_key_size; 407 sm_pairing_packet_t sm_m_preq; // only used during c1 408 authorization_state_t sm_connection_authorization_state; 409 uint16_t sm_local_ediv; 410 uint8_t sm_local_rand[8]; 411 int sm_le_db_index; 412 } sm_connection_t; 413 414 // 415 // ATT Server 416 // 417 418 // max ATT request matches L2CAP PDU -- allow to use smaller buffer 419 #ifndef ATT_REQUEST_BUFFER_SIZE 420 #define ATT_REQUEST_BUFFER_SIZE HCI_ACL_PAYLOAD_SIZE 421 #endif 422 423 typedef enum { 424 ATT_SERVER_IDLE, 425 ATT_SERVER_REQUEST_RECEIVED, 426 ATT_SERVER_W4_SIGNED_WRITE_VALIDATION, 427 ATT_SERVER_REQUEST_RECEIVED_AND_VALIDATED, 428 ATT_SERVER_RESPONSE_PENDING, 429 } att_server_state_t; 430 431 typedef struct { 432 att_server_state_t state; 433 434 uint8_t peer_addr_type; 435 bd_addr_t peer_address; 436 437 int ir_le_device_db_index; 438 uint8_t ir_lookup_active; 439 uint8_t pairing_active; 440 441 int value_indication_handle; 442 btstack_timer_source_t value_indication_timer; 443 444 att_connection_t connection; 445 446 btstack_linked_list_t notification_requests; 447 btstack_linked_list_t indication_requests; 448 449 #ifdef ENABLE_GATT_OVER_CLASSIC 450 uint16_t l2cap_cid; 451 #endif 452 453 uint16_t request_size; 454 uint8_t request_buffer[ATT_REQUEST_BUFFER_SIZE]; 455 456 } att_server_t; 457 458 #endif 459 460 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 461 typedef enum { 462 L2CAP_INFORMATION_STATE_IDLE = 0, 463 L2CAP_INFORMATION_STATE_W2_SEND_EXTENDED_FEATURE_REQUEST, 464 L2CAP_INFORMATION_STATE_W4_EXTENDED_FEATURE_RESPONSE, 465 L2CAP_INFORMATION_STATE_DONE 466 } l2cap_information_state_t; 467 468 typedef struct { 469 l2cap_information_state_t information_state; 470 uint16_t extended_feature_mask; 471 } l2cap_state_t; 472 #endif 473 474 // 475 typedef struct { 476 // linked list - assert: first field 477 btstack_linked_item_t item; 478 479 // remote side 480 bd_addr_t address; 481 482 // module handle 483 hci_con_handle_t con_handle; 484 485 // le public, le random, classic 486 bd_addr_type_t address_type; 487 488 // role: 0 - master, 1 - slave 489 uint8_t role; 490 491 // connection state 492 CONNECTION_STATE state; 493 494 // bonding 495 uint16_t bonding_flags; 496 uint8_t bonding_status; 497 498 // encryption key size (in octets) 499 uint8_t encryption_key_size; 500 501 // requested security level 502 gap_security_level_t requested_security_level; 503 504 // 505 link_key_type_t link_key_type; 506 507 // remote supported features 508 uint8_t remote_supported_feature_eSCO; 509 510 #ifdef ENABLE_CLASSIC 511 // connection mode, default ACL_CONNECTION_MODE_ACTIVE 512 uint8_t connection_mode; 513 514 // enter/exit sniff mode requests 515 uint16_t sniff_min_interval; // 0: idle, 0xffff exit sniff, else enter sniff 516 uint16_t sniff_max_interval; 517 uint16_t sniff_attempt; 518 uint16_t sniff_timeout; 519 520 // track SCO rx event 521 uint32_t sco_rx_ms; 522 uint8_t sco_rx_count; 523 uint8_t sco_rx_valid; 524 525 // generate sco can send now based on received packets, using timeout below 526 uint8_t sco_tx_ready; 527 528 btstack_timer_source_t timeout_sco; 529 #endif /* ENABLE_CLASSIC */ 530 531 // authentication and other errands 532 uint32_t authentication_flags; 533 534 btstack_timer_source_t timeout; 535 536 // timeout in system ticks (HAVE_EMBEDDED_TICK) or milliseconds (HAVE_EMBEDDED_TIME_MS) 537 uint32_t timestamp; 538 539 // ACL packet recombination - PRE_BUFFER + ACL Header + ACL payload 540 uint8_t acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + 4 + HCI_ACL_BUFFER_SIZE]; 541 uint16_t acl_recombination_pos; 542 uint16_t acl_recombination_length; 543 544 545 // number packets sent to controller 546 uint8_t num_packets_sent; 547 548 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 549 uint8_t num_packets_completed; 550 #endif 551 552 // LE Connection parameter update 553 le_con_parameter_update_state_t le_con_parameter_update_state; 554 uint8_t le_con_param_update_identifier; 555 uint16_t le_conn_interval_min; 556 uint16_t le_conn_interval_max; 557 uint16_t le_conn_latency; 558 uint16_t le_supervision_timeout; 559 560 #ifdef ENABLE_BLE 561 uint16_t le_connection_interval; 562 563 // LE PHY Update via set phy command 564 uint8_t le_phy_update_all_phys; // 0xff for idle 565 uint8_t le_phy_update_tx_phys; 566 uint8_t le_phy_update_rx_phys; 567 int8_t le_phy_update_phy_options; 568 569 // LE Security Manager 570 sm_connection_t sm_connection; 571 572 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 573 uint16_t le_max_tx_octets; 574 #endif 575 576 // ATT Server 577 att_server_t att_server; 578 #endif 579 580 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 581 l2cap_state_t l2cap_state; 582 #endif 583 584 } hci_connection_t; 585 586 587 /** 588 * HCI Inititizlization State Machine 589 */ 590 typedef enum hci_init_state{ 591 HCI_INIT_SEND_RESET = 0, 592 HCI_INIT_W4_SEND_RESET, 593 HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION, 594 HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION, 595 HCI_INIT_SEND_READ_LOCAL_NAME, 596 HCI_INIT_W4_SEND_READ_LOCAL_NAME, 597 598 HCI_INIT_SEND_BAUD_CHANGE, 599 HCI_INIT_W4_SEND_BAUD_CHANGE, 600 HCI_INIT_CUSTOM_INIT, 601 HCI_INIT_W4_CUSTOM_INIT, 602 HCI_INIT_SEND_RESET_CSR_WARM_BOOT, 603 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT, 604 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET, 605 HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY, 606 607 HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS, 608 HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS, 609 610 HCI_INIT_SEND_BAUD_CHANGE_BCM, 611 HCI_INIT_W4_SEND_BAUD_CHANGE_BCM, 612 613 HCI_INIT_SET_BD_ADDR, 614 HCI_INIT_W4_SET_BD_ADDR, 615 616 HCI_INIT_SEND_RESET_ST_WARM_BOOT, 617 HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT, 618 619 HCI_INIT_READ_BD_ADDR, 620 HCI_INIT_W4_READ_BD_ADDR, 621 622 HCI_INIT_READ_BUFFER_SIZE, 623 HCI_INIT_W4_READ_BUFFER_SIZE, 624 HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES, 625 HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES, 626 627 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 628 HCI_INIT_HOST_BUFFER_SIZE, 629 HCI_INIT_W4_HOST_BUFFER_SIZE, 630 HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 631 HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 632 #endif 633 634 HCI_INIT_SET_EVENT_MASK, 635 HCI_INIT_W4_SET_EVENT_MASK, 636 637 HCI_INIT_WRITE_SIMPLE_PAIRING_MODE, 638 HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE, 639 HCI_INIT_WRITE_PAGE_TIMEOUT, 640 HCI_INIT_W4_WRITE_PAGE_TIMEOUT, 641 HCI_INIT_WRITE_DEFAULT_LINK_POLICY_SETTING, 642 HCI_INIT_W4_WRITE_DEFAULT_LINK_POLICY_SETTING, 643 HCI_INIT_WRITE_CLASS_OF_DEVICE, 644 HCI_INIT_W4_WRITE_CLASS_OF_DEVICE, 645 HCI_INIT_WRITE_LOCAL_NAME, 646 HCI_INIT_W4_WRITE_LOCAL_NAME, 647 HCI_INIT_WRITE_EIR_DATA, 648 HCI_INIT_W4_WRITE_EIR_DATA, 649 HCI_INIT_WRITE_INQUIRY_MODE, 650 HCI_INIT_W4_WRITE_INQUIRY_MODE, 651 HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE, 652 HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE, 653 HCI_INIT_WRITE_SCAN_ENABLE, 654 HCI_INIT_W4_WRITE_SCAN_ENABLE, 655 656 // SCO over HCI 657 HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 658 HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 659 HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 660 HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 661 662 // SCO over HCI Broadcom 663 HCI_INIT_BCM_WRITE_SCO_PCM_INT, 664 HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT, 665 666 #ifdef ENABLE_BLE 667 HCI_INIT_LE_READ_BUFFER_SIZE, 668 HCI_INIT_W4_LE_READ_BUFFER_SIZE, 669 HCI_INIT_WRITE_LE_HOST_SUPPORTED, 670 HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED, 671 HCI_INIT_LE_SET_EVENT_MASK, 672 HCI_INIT_W4_LE_SET_EVENT_MASK, 673 #endif 674 675 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 676 HCI_INIT_LE_READ_MAX_DATA_LENGTH, 677 HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH, 678 HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH, 679 HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH, 680 #endif 681 682 #ifdef ENABLE_LE_CENTRAL 683 HCI_INIT_READ_WHITE_LIST_SIZE, 684 HCI_INIT_W4_READ_WHITE_LIST_SIZE, 685 686 HCI_INIT_LE_SET_SCAN_PARAMETERS, 687 HCI_INIT_W4_LE_SET_SCAN_PARAMETERS, 688 #endif 689 690 HCI_INIT_DONE, 691 692 HCI_FALLING_ASLEEP_DISCONNECT, 693 HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE, 694 HCI_FALLING_ASLEEP_COMPLETE, 695 696 HCI_INIT_AFTER_SLEEP, 697 698 HCI_HALTING_DISCONNECT_ALL_NO_TIMER, 699 HCI_HALTING_DISCONNECT_ALL_TIMER, 700 HCI_HALTING_W4_TIMER, 701 HCI_HALTING_CLOSE, 702 703 } hci_substate_t; 704 705 enum { 706 LE_ADVERTISEMENT_TASKS_DISABLE = 1 << 0, 707 LE_ADVERTISEMENT_TASKS_SET_ADV_DATA = 1 << 1, 708 LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA = 1 << 2, 709 LE_ADVERTISEMENT_TASKS_SET_PARAMS = 1 << 3, 710 LE_ADVERTISEMENT_TASKS_ENABLE = 1 << 4, 711 }; 712 713 enum { 714 LE_WHITELIST_ON_CONTROLLER = 1 << 0, 715 LE_WHITELIST_ADD_TO_CONTROLLER = 1 << 1, 716 LE_WHITELIST_REMOVE_FROM_CONTROLLER = 1 << 2, 717 }; 718 719 typedef struct { 720 btstack_linked_item_t item; 721 bd_addr_t address; 722 bd_addr_type_t address_type; 723 uint8_t state; 724 } whitelist_entry_t; 725 726 /** 727 * main data structure 728 */ 729 typedef struct { 730 // transport component with configuration 731 const hci_transport_t * hci_transport; 732 const void * config; 733 734 // chipset driver 735 const btstack_chipset_t * chipset; 736 737 // hardware power controller 738 const btstack_control_t * control; 739 740 /* link key db */ 741 const btstack_link_key_db_t * link_key_db; 742 743 // list of existing baseband connections 744 btstack_linked_list_t connections; 745 746 /* callback to L2CAP layer */ 747 btstack_packet_handler_t acl_packet_handler; 748 749 /* callback for SCO data */ 750 btstack_packet_handler_t sco_packet_handler; 751 752 /* callbacks for events */ 753 btstack_linked_list_t event_handlers; 754 755 #ifdef ENABLE_CLASSIC 756 /* callback for reject classic connection */ 757 int (*gap_classic_accept_callback)(bd_addr_t addr); 758 #endif 759 760 // hardware error callback 761 void (*hardware_error_callback)(uint8_t error); 762 763 // basic configuration 764 const char * local_name; 765 const uint8_t * eir_data; 766 uint32_t class_of_device; 767 bd_addr_t local_bd_addr; 768 uint8_t default_link_policy_settings; 769 uint8_t allow_role_switch; 770 uint8_t ssp_enable; 771 uint8_t ssp_io_capability; 772 uint8_t ssp_authentication_requirement; 773 uint8_t ssp_auto_accept; 774 bool secure_connections_enable; 775 inquiry_mode_t inquiry_mode; 776 #ifdef ENABLE_CLASSIC 777 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3, we use 16 as default 778 uint8_t gap_required_encyrption_key_size; 779 uint16_t link_supervision_timeout; 780 gap_security_level_t gap_security_level; 781 #endif 782 783 // single buffer for HCI packet assembly + additional prebuffer for H4 drivers 784 uint8_t * hci_packet_buffer; 785 uint8_t hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE + HCI_OUTGOING_PACKET_BUFFER_SIZE]; 786 uint8_t hci_packet_buffer_reserved; 787 uint16_t acl_fragmentation_pos; 788 uint16_t acl_fragmentation_total_size; 789 uint8_t acl_fragmentation_tx_active; 790 791 /* host to controller flow control */ 792 uint8_t num_cmd_packets; 793 uint8_t acl_packets_total_num; 794 uint16_t acl_data_packet_length; 795 uint8_t sco_packets_total_num; 796 uint8_t sco_data_packet_length; 797 uint8_t synchronous_flow_control_enabled; 798 uint8_t le_acl_packets_total_num; 799 uint16_t le_data_packets_length; 800 uint8_t sco_waiting_for_can_send_now; 801 uint8_t sco_can_send_now; 802 803 /* local supported features */ 804 uint8_t local_supported_features[8]; 805 806 /* local supported commands summary - complete info is 64 bytes */ 807 /* 0 - Read Buffer Size (Octet 14/bit 7) */ 808 /* 1 - Write Le Host Supported (Octet 24/bit 6) */ 809 /* 2 - Write Synchronous Flow Control Enable (Octet 10/bit 4) */ 810 /* 3 - Write Default Erroneous Data Reporting (Octet 18/bit 3) */ 811 /* 4 - LE Write Suggested Default Data Length (Octet 34/bit 0) */ 812 /* 5 - LE Read Maximum Data Length (Octet 35/bit 3) */ 813 /* 6 - LE Set Default PHY (Octet 35/bit 5) */ 814 /* 7 - Read Encryption Key Size (Octet 20/bit 4) */ 815 /* 8 - Read Remote Extended Features (Octet 2/bit 5) */ 816 /* 9 - Write Secure Connections Host (Octet 32/bit 3) */ 817 uint8_t local_supported_commands[2]; 818 819 /* bluetooth device information from hci read local version information */ 820 // uint16_t hci_version; 821 // uint16_t hci_revision; 822 // uint16_t lmp_version; 823 uint16_t manufacturer; 824 // uint16_t lmp_subversion; 825 826 // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE 827 uint16_t packet_types; 828 829 830 /* hci state machine */ 831 HCI_STATE state; 832 hci_substate_t substate; 833 btstack_timer_source_t timeout; 834 btstack_chipset_result_t chipset_result; 835 836 uint16_t last_cmd_opcode; 837 838 uint8_t cmds_ready; 839 840 /* buffer for scan enable cmd - 0xff no change */ 841 uint8_t new_scan_enable_value; 842 843 uint8_t discoverable; 844 uint8_t connectable; 845 uint8_t bondable; 846 847 uint8_t inquiry_state; // see hci.c for state defines 848 849 bd_addr_t remote_name_addr; 850 uint16_t remote_name_clock_offset; 851 uint8_t remote_name_page_scan_repetition_mode; 852 uint8_t remote_name_state; // see hci.c for state defines 853 854 bd_addr_t gap_pairing_addr; 855 uint8_t gap_pairing_state; // see hci.c for state defines 856 union { 857 const char * gap_pairing_pin; 858 uint32_t gap_pairing_passkey; 859 } gap_pairing_input; 860 861 uint16_t sco_voice_setting; 862 uint16_t sco_voice_setting_active; 863 864 uint8_t loopback_mode; 865 866 // buffer for single connection decline 867 uint8_t decline_reason; 868 bd_addr_t decline_addr; 869 870 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 871 uint8_t host_completed_packets; 872 #endif 873 874 #ifdef ENABLE_BLE 875 uint8_t le_own_addr_type; 876 bd_addr_t le_random_address; 877 uint8_t le_random_address_set; 878 #endif 879 880 #ifdef ENABLE_LE_CENTRAL 881 uint8_t le_scanning_enabled; 882 uint8_t le_scanning_active; 883 884 le_connecting_state_t le_connecting_state; 885 886 // buffer for le scan type command - 0xff not set 887 uint8_t le_scan_type; 888 uint16_t le_scan_interval; 889 uint16_t le_scan_window; 890 891 // LE Whitelist Management 892 uint8_t le_whitelist_capacity; 893 btstack_linked_list_t le_whitelist; 894 895 // Connection parameters 896 uint16_t le_connection_interval_min; 897 uint16_t le_connection_interval_max; 898 uint16_t le_connection_latency; 899 uint16_t le_supervision_timeout; 900 uint16_t le_minimum_ce_length; 901 uint16_t le_maximum_ce_length; 902 uint16_t le_connection_scan_interval; 903 uint16_t le_connection_scan_window; 904 #endif 905 906 le_connection_parameter_range_t le_connection_parameter_range; 907 908 #ifdef ENABLE_LE_PERIPHERAL 909 uint8_t * le_advertisements_data; 910 uint8_t le_advertisements_data_len; 911 912 uint8_t * le_scan_response_data; 913 uint8_t le_scan_response_data_len; 914 915 uint8_t le_advertisements_active; 916 uint8_t le_advertisements_enabled; 917 uint8_t le_advertisements_todo; 918 919 uint16_t le_advertisements_interval_min; 920 uint16_t le_advertisements_interval_max; 921 uint8_t le_advertisements_type; 922 uint8_t le_advertisements_direct_address_type; 923 uint8_t le_advertisements_channel_map; 924 uint8_t le_advertisements_filter_policy; 925 bd_addr_t le_advertisements_direct_address; 926 927 uint8_t le_max_number_peripheral_connections; 928 #endif 929 930 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 931 // LE Data Length 932 uint16_t le_supported_max_tx_octets; 933 uint16_t le_supported_max_tx_time; 934 #endif 935 936 // custom BD ADDR 937 bd_addr_t custom_bd_addr; 938 uint8_t custom_bd_addr_set; 939 940 #ifdef ENABLE_CLASSIC 941 uint8_t master_slave_policy; 942 #endif 943 944 // address and address_type of active create connection command (ACL, SCO, LE) 945 bd_addr_t outgoing_addr; 946 bd_addr_type_t outgoing_addr_type; 947 } hci_stack_t; 948 949 950 /* API_START */ 951 952 953 // HCI init and configuration 954 955 956 /** 957 * @brief Set up HCI. Needs to be called before any other function. 958 */ 959 void hci_init(const hci_transport_t *transport, const void *config); 960 961 /** 962 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information. 963 */ 964 void hci_set_chipset(const btstack_chipset_t *chipset_driver); 965 966 /** 967 * @brief Configure Bluetooth hardware control. Has to be called before power on. 968 */ 969 void hci_set_control(const btstack_control_t *hardware_control); 970 971 /** 972 * @brief Configure Bluetooth hardware control. Has to be called before power on. 973 */ 974 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db); 975 976 /** 977 * @brief Set callback for Bluetooth Hardware Error 978 */ 979 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)); 980 981 /** 982 * @brief Set Public BD ADDR - passed on to Bluetooth chipset during init if supported in bt_control_h 983 */ 984 void hci_set_bd_addr(bd_addr_t addr); 985 986 /** 987 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 988 */ 989 void hci_set_sco_voice_setting(uint16_t voice_setting); 990 991 /** 992 * @brief Get SCO Voice Setting 993 * @return current voice setting 994 */ 995 uint16_t hci_get_sco_voice_setting(void); 996 997 /** 998 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 999 * @param inquriy_mode see bluetooth_defines.h 1000 */ 1001 void hci_set_inquiry_mode(inquiry_mode_t mode); 1002 1003 /** 1004 * @brief Requests the change of BTstack power mode. 1005 */ 1006 int hci_power_control(HCI_POWER_MODE mode); 1007 1008 /** 1009 * @brief Shutdown HCI 1010 */ 1011 void hci_close(void); 1012 1013 1014 // Callback registration 1015 1016 1017 /** 1018 * @brief Add event packet handler. 1019 */ 1020 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler); 1021 1022 /** 1023 * @brief Registers a packet handler for ACL data. Used by L2CAP 1024 */ 1025 void hci_register_acl_packet_handler(btstack_packet_handler_t handler); 1026 1027 /** 1028 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 1029 */ 1030 void hci_register_sco_packet_handler(btstack_packet_handler_t handler); 1031 1032 1033 // Sending HCI Commands 1034 1035 /** 1036 * @brief Check if CMD packet can be sent to controller 1037 */ 1038 int hci_can_send_command_packet_now(void); 1039 1040 /** 1041 * @brief Creates and sends HCI command packets based on a template and a list of parameters. Will return error if outgoing data buffer is occupied. 1042 */ 1043 int hci_send_cmd(const hci_cmd_t *cmd, ...); 1044 1045 1046 // Sending SCO Packets 1047 1048 /** @brief Get SCO packet length for current SCO Voice setting 1049 * @note Using SCO packets of the exact length is required for USB transfer 1050 * @return Length of SCO packets in bytes (not audio frames) incl. 3 byte header 1051 */ 1052 int hci_get_sco_packet_length(void); 1053 1054 /** 1055 * @brief Request emission of HCI_EVENT_SCO_CAN_SEND_NOW as soon as possible 1056 * @note HCI_EVENT_SCO_CAN_SEND_NOW might be emitted during call to this function 1057 * so packet handler should be ready to handle it 1058 */ 1059 void hci_request_sco_can_send_now_event(void); 1060 1061 /** 1062 * @brief Check HCI packet buffer and if SCO packet can be sent to controller 1063 */ 1064 int hci_can_send_sco_packet_now(void); 1065 1066 /** 1067 * @brief Check if SCO packet can be sent to controller 1068 */ 1069 int hci_can_send_prepared_sco_packet_now(void); 1070 1071 /** 1072 * @brief Send SCO packet prepared in HCI packet buffer 1073 */ 1074 int hci_send_sco_packet_buffer(int size); 1075 1076 1077 // Outgoing packet buffer, also used for SCO packets 1078 // see hci_can_send_prepared_sco_packet_now amn hci_send_sco_packet_buffer 1079 1080 /** 1081 * Reserves outgoing packet buffer. 1082 * @return 1 on success 1083 */ 1084 int hci_reserve_packet_buffer(void); 1085 1086 /** 1087 * Get pointer for outgoing packet buffer 1088 */ 1089 uint8_t* hci_get_outgoing_packet_buffer(void); 1090 1091 /** 1092 * Release outgoing packet buffer\ 1093 * @note only called instead of hci_send_preparared 1094 */ 1095 void hci_release_packet_buffer(void); 1096 1097 /** 1098 * @brief Sets the master/slave policy 1099 * @param policy (0: attempt to become master, 1: let connecting device decide) 1100 */ 1101 void hci_set_master_slave_policy(uint8_t policy); 1102 1103 /* API_END */ 1104 1105 1106 /** 1107 * va_list version of hci_send_cmd, call hci_send_cmd_packet 1108 */ 1109 int hci_send_cmd_va_arg(const hci_cmd_t *cmd, va_list argtr); 1110 1111 /** 1112 * Get connection iterator. Only used by l2cap.c and sm.c 1113 */ 1114 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it); 1115 1116 /** 1117 * Get internal hci_connection_t for given handle. Used by L2CAP, SM, daemon 1118 */ 1119 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); 1120 1121 /** 1122 * Get internal hci_connection_t for given Bluetooth addres. Called by L2CAP 1123 */ 1124 hci_connection_t * hci_connection_for_bd_addr_and_type(bd_addr_t addr, bd_addr_type_t addr_type); 1125 1126 /** 1127 * Check if outgoing packet buffer is reserved. Used for internal checks in l2cap.c 1128 */ 1129 int hci_is_packet_buffer_reserved(void); 1130 1131 /** 1132 * Check hci packet buffer is free and a classic acl packet can be sent to controller 1133 */ 1134 int hci_can_send_acl_classic_packet_now(void); 1135 1136 /** 1137 * Check hci packet buffer is free and an LE acl packet can be sent to controller 1138 */ 1139 int hci_can_send_acl_le_packet_now(void); 1140 1141 /** 1142 * Check hci packet buffer is free and an acl packet for the given handle can be sent to controller 1143 */ 1144 int hci_can_send_acl_packet_now(hci_con_handle_t con_handle); 1145 1146 /** 1147 * Check if acl packet for the given handle can be sent to controller 1148 */ 1149 int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); 1150 1151 /** 1152 * Send acl packet prepared in hci packet buffer 1153 */ 1154 int hci_send_acl_packet_buffer(int size); 1155 1156 /** 1157 * Check if authentication is active. It delays automatic disconnect while no L2CAP connection 1158 * Called by l2cap. 1159 */ 1160 int hci_authentication_active_for_handle(hci_con_handle_t handle); 1161 1162 /** 1163 * Get maximal ACL Classic data packet length based on used buffer size. Called by L2CAP 1164 */ 1165 uint16_t hci_max_acl_data_packet_length(void); 1166 1167 /** 1168 * Get supported packet types. Called by L2CAP 1169 */ 1170 uint16_t hci_usable_acl_packet_types(void); 1171 1172 /** 1173 * Check if ACL packets marked as non flushable can be sent. Called by L2CAP 1174 */ 1175 int hci_non_flushable_packet_boundary_flag_supported(void); 1176 1177 /** 1178 * Check if extended SCO Link is supported 1179 */ 1180 int hci_extended_sco_link_supported(void); 1181 1182 /** 1183 * Check if SSP is supported on both sides. Called by L2CAP 1184 */ 1185 int gap_ssp_supported_on_both_sides(hci_con_handle_t handle); 1186 1187 /** 1188 * Disconn because of security block. Called by L2CAP 1189 */ 1190 void hci_disconnect_security_block(hci_con_handle_t con_handle); 1191 1192 /** 1193 * Query if remote side supports eSCO 1194 */ 1195 int hci_remote_esco_supported(hci_con_handle_t con_handle); 1196 1197 /** 1198 * Emit current HCI state. Called by daemon 1199 */ 1200 void hci_emit_state(void); 1201 1202 /** 1203 * Send complete CMD packet. Called by daemon and hci_send_cmd_va_arg 1204 * @returns 0 if command was successfully sent to HCI Transport layer 1205 */ 1206 int hci_send_cmd_packet(uint8_t *packet, int size); 1207 1208 /** 1209 * Disconnect all HCI connections. Called by daemon 1210 */ 1211 void hci_disconnect_all(void); 1212 1213 /** 1214 * Get number of free acl slots for packets of given handle. Called by daemon 1215 */ 1216 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); 1217 1218 /** 1219 * @brief Set Advertisement Parameters 1220 * @param adv_int_min 1221 * @param adv_int_max 1222 * @param adv_type 1223 * @param direct_address_type 1224 * @param direct_address 1225 * @param channel_map 1226 * @param filter_policy 1227 * 1228 * @note internal use. use gap_advertisements_set_params from gap.h instead. 1229 */ 1230 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 1231 uint8_t direct_address_typ, bd_addr_t direct_address, uint8_t channel_map, uint8_t filter_policy); 1232 1233 /** 1234 * 1235 * @note internal use. use gap_random_address_set_mode from gap.h instead. 1236 */ 1237 void hci_le_set_own_address_type(uint8_t own_address_type); 1238 1239 /** 1240 * @brief Get Manufactured 1241 * @return manufacturer id 1242 */ 1243 uint16_t hci_get_manufacturer(void); 1244 1245 /** 1246 * Defer halt. Used by btstack_crypto to allow current HCI operation to complete 1247 */ 1248 void hci_halting_defer(void); 1249 1250 // Only for PTS testing 1251 1252 /** 1253 * Disable automatic L2CAP disconnect if no L2CAP connection is established 1254 */ 1255 void hci_disable_l2cap_timeout_check(void); 1256 1257 /** 1258 * Get Classic Allow Role Switch param 1259 */ 1260 uint8_t hci_get_allow_role_switch(void); 1261 1262 /** 1263 * Get state 1264 */ 1265 HCI_STATE hci_get_state(void); 1266 1267 // setup test connections, used for fuzzing 1268 void hci_setup_test_connections_fuzz(void); 1269 1270 // free all connections, used for fuzzing 1271 void hci_free_connections_fuzz(void); 1272 1273 // simulate stack bootup 1274 void hci_simulate_working_fuzz(void); 1275 1276 #if defined __cplusplus 1277 } 1278 #endif 1279 1280 #endif // HCI_H 1281