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 BLUEKITCHEN 24 * GMBH 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 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 6) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES , 27, 5) \ 171 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 172 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 173 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 175 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 176 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 178 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 5) \ 179 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 180 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 181 182 // enumerate supported commands 183 #define X(name, offset, bit) name, 184 enum { 185 SUPPORTED_HCI_COMMANDS 186 SUPPORTED_HCI_COMMANDS_COUNT 187 }; 188 #undef X 189 190 // prototypes 191 #ifdef ENABLE_CLASSIC 192 static void hci_update_scan_enable(void); 193 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 194 static int hci_local_ssp_activated(void); 195 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 196 static bool hci_ssp_supported(hci_connection_t * connection); 197 static void hci_notify_if_sco_can_send_now(void); 198 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 199 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 200 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 201 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 202 static void hci_connection_timestamp(hci_connection_t *connection); 203 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 204 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 205 #endif 206 207 static int hci_power_control_on(void); 208 static void hci_power_control_off(void); 209 static void hci_state_reset(void); 210 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 211 static void hci_emit_transport_packet_sent(void); 212 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 213 static void hci_emit_nr_connections_changed(void); 214 static void hci_emit_hci_open_failed(void); 215 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 216 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 217 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump); 218 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 219 static void hci_run(void); 220 static bool hci_is_le_connection(hci_connection_t * connection); 221 static uint8_t hci_send_prepared_cmd_packet(void); 222 223 #ifdef ENABLE_CLASSIC 224 static int hci_have_usb_transport(void); 225 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 226 #endif 227 228 #ifdef ENABLE_BLE 229 static bool hci_run_general_gap_le(void); 230 static void gap_privacy_clients_handle_ready(void); 231 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 232 #ifdef ENABLE_LE_CENTRAL 233 // called from test/ble_client/advertising_data_parser.c 234 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 235 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 236 static hci_connection_t * gap_get_outgoing_le_connection(void); 237 static void hci_le_scan_stop(void); 238 #endif 239 #ifdef ENABLE_LE_PERIPHERAL 240 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 241 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 242 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len); 243 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size); 244 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 245 #endif /* ENABLE_LE_PERIPHERAL */ 246 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 247 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 248 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 249 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 250 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 251 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 252 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 253 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 254 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 255 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 256 static void hci_iso_notify_can_send_now(void); 257 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 258 static void hci_emit_big_terminated(const le_audio_big_t * big); 259 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 260 static void hci_emit_big_sync_stopped(uint8_t big_handle); 261 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 262 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 263 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 264 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 265 #endif /* ENABLE_BLE */ 266 267 // the STACK is here 268 #ifndef HAVE_MALLOC 269 static hci_stack_t hci_stack_static; 270 #endif 271 static hci_stack_t * hci_stack = NULL; 272 273 #ifdef ENABLE_CLASSIC 274 // default name 275 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 276 277 // test helper 278 static uint8_t disable_l2cap_timeouts = 0; 279 #endif 280 281 // reset connection state on create and on reconnect 282 // don't overwrite addr, con handle, role 283 static void hci_connection_init(hci_connection_t * conn){ 284 conn->authentication_flags = AUTH_FLAG_NONE; 285 conn->bonding_flags = 0; 286 conn->requested_security_level = LEVEL_0; 287 conn->link_key_type = INVALID_LINK_KEY; 288 #ifdef ENABLE_CLASSIC 289 conn->request_role = HCI_ROLE_INVALID; 290 conn->sniff_subrating_max_latency = 0xffff; 291 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 292 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 293 btstack_run_loop_set_timer_context(&conn->timeout, conn); 294 hci_connection_timestamp(conn); 295 #endif 296 conn->acl_recombination_length = 0; 297 conn->acl_recombination_pos = 0; 298 conn->num_packets_sent = 0; 299 300 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 301 #ifdef ENABLE_BLE 302 conn->le_phy_update_all_phys = 0xff; 303 #endif 304 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 305 conn->le_max_tx_octets = 27; 306 #endif 307 #ifdef ENABLE_CLASSIC_PAIRING_OOB 308 conn->classic_oob_c_192 = NULL; 309 conn->classic_oob_r_192 = NULL; 310 conn->classic_oob_c_256 = NULL; 311 conn->classic_oob_r_256 = NULL; 312 #endif 313 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 314 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 315 conn->le_past_advertising_handle = 0xff; 316 #endif 317 } 318 319 /** 320 * create connection for given address 321 * 322 * @return connection OR NULL, if no memory left 323 */ 324 static hci_connection_t * 325 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 326 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 327 328 hci_connection_t * conn = btstack_memory_hci_connection_get(); 329 if (!conn) return NULL; 330 hci_connection_init(conn); 331 332 bd_addr_copy(conn->address, addr); 333 conn->address_type = addr_type; 334 conn->con_handle = HCI_CON_HANDLE_INVALID; 335 conn->role = role; 336 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 337 338 return conn; 339 } 340 341 342 /** 343 * get le connection parameter range 344 * 345 * @return le connection parameter range struct 346 */ 347 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 348 *range = hci_stack->le_connection_parameter_range; 349 } 350 351 /** 352 * set le connection parameter range 353 * 354 */ 355 356 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 357 hci_stack->le_connection_parameter_range = *range; 358 } 359 360 /** 361 * @brief Test if connection parameters are inside in existing rage 362 * @param conn_interval_min (unit: 1.25ms) 363 * @param conn_interval_max (unit: 1.25ms) 364 * @param conn_latency 365 * @param supervision_timeout (unit: 10ms) 366 * @return 1 if included 367 */ 368 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 369 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 370 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 371 372 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 373 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 374 375 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 376 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 377 378 return 1; 379 } 380 381 /** 382 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 383 * @note: default: 1 384 * @param max_peripheral_connections 385 */ 386 #ifdef ENABLE_LE_PERIPHERAL 387 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 388 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 389 } 390 #endif 391 392 /** 393 * get hci connections iterator 394 * 395 * @return hci connections iterator 396 */ 397 398 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 399 btstack_linked_list_iterator_init(it, &hci_stack->connections); 400 } 401 402 /** 403 * get connection for a given handle 404 * 405 * @return connection OR NULL, if not found 406 */ 407 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 408 btstack_linked_list_iterator_t it; 409 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 410 while (btstack_linked_list_iterator_has_next(&it)){ 411 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 412 if ( item->con_handle == con_handle ) { 413 return item; 414 } 415 } 416 return NULL; 417 } 418 419 /** 420 * get connection for given address 421 * 422 * @return connection OR NULL, if not found 423 */ 424 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 425 btstack_linked_list_iterator_t it; 426 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 427 while (btstack_linked_list_iterator_has_next(&it)){ 428 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 429 if (connection->address_type != addr_type) continue; 430 if (memcmp(addr, connection->address, 6) != 0) continue; 431 return connection; 432 } 433 return NULL; 434 } 435 436 #ifdef ENABLE_CLASSIC 437 438 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 439 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 440 } 441 442 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 443 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 444 } 445 446 #ifdef ENABLE_SCO_OVER_HCI 447 static int hci_number_sco_connections(void){ 448 int connections = 0; 449 btstack_linked_list_iterator_t it; 450 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 451 while (btstack_linked_list_iterator_has_next(&it)){ 452 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 453 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 454 connections++; 455 } 456 return connections; 457 } 458 #endif 459 460 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 461 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 462 #ifdef HAVE_EMBEDDED_TICK 463 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 464 // connections might be timed out 465 hci_emit_l2cap_check_timeout(connection); 466 } 467 #else 468 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 469 // connections might be timed out 470 hci_emit_l2cap_check_timeout(connection); 471 } 472 #endif 473 } 474 475 static void hci_connection_timestamp(hci_connection_t *connection){ 476 #ifdef HAVE_EMBEDDED_TICK 477 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 478 #else 479 connection->timestamp = btstack_run_loop_get_time_ms(); 480 #endif 481 } 482 483 /** 484 * add authentication flags and reset timer 485 * @note: assumes classic connection 486 * @note: bd_addr is passed in as little endian uint8_t * as it is called from parsing packets 487 */ 488 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 489 bd_addr_t addr; 490 reverse_bd_addr(bd_addr, addr); 491 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 492 if (conn) { 493 connectionSetAuthenticationFlags(conn, flags); 494 hci_connection_timestamp(conn); 495 } 496 } 497 498 static bool hci_pairing_active(hci_connection_t * hci_connection){ 499 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 500 } 501 502 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 503 if (hci_pairing_active(hci_connection)) return; 504 if (ssp){ 505 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 506 } else { 507 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 508 } 509 // if we are initiator, we have sent an HCI Authenticate Request 510 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 511 512 // if we are responder, use minimal service security level as required level 513 if (!initiator){ 514 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 515 } 516 517 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 518 519 uint8_t event[12]; 520 event[0] = GAP_EVENT_PAIRING_STARTED; 521 event[1] = 10; 522 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 523 reverse_bd_addr(hci_connection->address, &event[4]); 524 event[10] = (uint8_t) ssp; 525 event[11] = (uint8_t) initiator; 526 hci_emit_btstack_event(event, sizeof(event), 1); 527 } 528 529 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 530 hci_connection->requested_security_level = LEVEL_0; 531 if (!hci_pairing_active(hci_connection)) return; 532 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 533 #ifdef ENABLE_CLASSIC_PAIRING_OOB 534 hci_connection->classic_oob_c_192 = NULL; 535 hci_connection->classic_oob_r_192 = NULL; 536 hci_connection->classic_oob_c_256 = NULL; 537 hci_connection->classic_oob_r_256 = NULL; 538 #endif 539 log_info("pairing complete, status %02x", status); 540 541 uint8_t event[11]; 542 event[0] = GAP_EVENT_PAIRING_COMPLETE; 543 event[1] = 9; 544 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 545 reverse_bd_addr(hci_connection->address, &event[4]); 546 event[10] = status; 547 hci_emit_btstack_event(event, sizeof(event), 1); 548 549 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 550 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 551 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 552 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 553 hci_connection->bonding_status = status; 554 } 555 } 556 557 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 558 hci_connection_t * conn = hci_connection_for_handle(handle); 559 if (!conn) return false; 560 return hci_pairing_active(conn); 561 } 562 563 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 566 hci_stack->link_key_db->delete_link_key(addr); 567 } 568 569 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 570 if (!hci_stack->link_key_db) return; 571 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 572 hci_stack->link_key_db->put_link_key(addr, link_key, type); 573 } 574 575 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 576 if (!hci_stack->link_key_db) return false; 577 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 578 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 579 return result; 580 } 581 582 void gap_delete_all_link_keys(void){ 583 bd_addr_t addr; 584 link_key_t link_key; 585 link_key_type_t type; 586 btstack_link_key_iterator_t it; 587 int ok = gap_link_key_iterator_init(&it); 588 if (!ok) { 589 log_error("could not initialize iterator"); 590 return; 591 } 592 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 593 gap_drop_link_key_for_bd_addr(addr); 594 } 595 gap_link_key_iterator_done(&it); 596 } 597 598 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 599 if (!hci_stack->link_key_db) return 0; 600 if (!hci_stack->link_key_db->iterator_init) return 0; 601 return hci_stack->link_key_db->iterator_init(it); 602 } 603 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 604 if (!hci_stack->link_key_db) return 0; 605 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 606 } 607 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 608 if (!hci_stack->link_key_db) return; 609 hci_stack->link_key_db->iterator_done(it); 610 } 611 #endif 612 613 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 614 switch (address_type){ 615 case BD_ADDR_TYPE_LE_PUBLIC: 616 case BD_ADDR_TYPE_LE_RANDOM: 617 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 618 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 619 return true; 620 default: 621 return false; 622 } 623 } 624 625 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 626 switch (address_type){ 627 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 628 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 629 return true; 630 default: 631 return false; 632 } 633 } 634 635 static bool hci_is_le_connection(hci_connection_t * connection){ 636 return hci_is_le_connection_type(connection->address_type); 637 } 638 639 /** 640 * count connections 641 */ 642 static int nr_hci_connections(void){ 643 int count = 0; 644 btstack_linked_item_t *it; 645 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 646 count++; 647 } 648 return count; 649 } 650 651 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 652 653 unsigned int num_packets_sent_classic = 0; 654 unsigned int num_packets_sent_le = 0; 655 656 btstack_linked_item_t *it; 657 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 658 hci_connection_t * connection = (hci_connection_t *) it; 659 if (hci_is_le_connection(connection)){ 660 num_packets_sent_le += connection->num_packets_sent; 661 } 662 if (connection->address_type == BD_ADDR_TYPE_ACL){ 663 num_packets_sent_classic += connection->num_packets_sent; 664 } 665 } 666 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 667 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 668 int free_slots_le = 0; 669 670 if (free_slots_classic < 0){ 671 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 672 return 0; 673 } 674 675 if (hci_stack->le_acl_packets_total_num){ 676 // if we have LE slots, they are used 677 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 678 if (free_slots_le < 0){ 679 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 680 return 0; 681 } 682 } else { 683 // otherwise, classic slots are used for LE, too 684 free_slots_classic -= num_packets_sent_le; 685 if (free_slots_classic < 0){ 686 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 687 return 0; 688 } 689 } 690 691 switch (address_type){ 692 case BD_ADDR_TYPE_UNKNOWN: 693 log_error("hci_number_free_acl_slots: unknown address type"); 694 return 0; 695 696 case BD_ADDR_TYPE_ACL: 697 return (uint16_t) free_slots_classic; 698 699 default: 700 if (hci_stack->le_acl_packets_total_num > 0){ 701 return (uint16_t) free_slots_le; 702 } 703 return (uint16_t) free_slots_classic; 704 } 705 } 706 707 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 708 // get connection type 709 hci_connection_t * connection = hci_connection_for_handle(con_handle); 710 if (!connection){ 711 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 712 return 0; 713 } 714 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 715 } 716 717 #ifdef ENABLE_CLASSIC 718 static int hci_number_free_sco_slots(void){ 719 unsigned int num_sco_packets_sent = 0; 720 btstack_linked_item_t *it; 721 if (hci_stack->synchronous_flow_control_enabled){ 722 // explicit flow control 723 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 724 hci_connection_t * connection = (hci_connection_t *) it; 725 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 726 num_sco_packets_sent += connection->num_packets_sent; 727 } 728 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 729 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 730 return 0; 731 } 732 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 733 } else { 734 // implicit flow control 735 int num_ready = 0; 736 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 737 hci_connection_t * connection = (hci_connection_t *) it; 738 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 739 if (connection->sco_tx_ready == 0) continue; 740 num_ready++; 741 } 742 return num_ready; 743 } 744 } 745 #endif 746 747 // only used to send HCI Host Number Completed Packets 748 static int hci_can_send_command_packet_transport(void){ 749 if (hci_stack->hci_packet_buffer_reserved) return 0; 750 751 // check for async hci transport implementations 752 if (hci_stack->hci_transport->can_send_packet_now){ 753 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 754 return 0; 755 } 756 } 757 return 1; 758 } 759 760 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 761 bool hci_can_send_command_packet_now(void){ 762 if (hci_can_send_command_packet_transport() == 0) return false; 763 return hci_stack->num_cmd_packets > 0u; 764 } 765 766 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 767 // check for async hci transport implementations 768 if (!hci_stack->hci_transport->can_send_packet_now) return true; 769 return hci_stack->hci_transport->can_send_packet_now(packet_type); 770 } 771 772 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 773 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 774 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 775 } 776 777 bool hci_can_send_acl_le_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 780 } 781 782 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 783 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 784 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 785 } 786 787 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 788 if (hci_stack->hci_packet_buffer_reserved) return false; 789 return hci_can_send_prepared_acl_packet_now(con_handle); 790 } 791 792 #ifdef ENABLE_CLASSIC 793 bool hci_can_send_acl_classic_packet_now(void){ 794 if (hci_stack->hci_packet_buffer_reserved) return false; 795 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 796 } 797 798 bool hci_can_send_prepared_sco_packet_now(void){ 799 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 800 if (hci_have_usb_transport()){ 801 return hci_stack->sco_can_send_now; 802 } else { 803 return hci_number_free_sco_slots() > 0; 804 } 805 } 806 807 bool hci_can_send_sco_packet_now(void){ 808 if (hci_stack->hci_packet_buffer_reserved) return false; 809 return hci_can_send_prepared_sco_packet_now(); 810 } 811 812 void hci_request_sco_can_send_now_event(void){ 813 hci_stack->sco_waiting_for_can_send_now = 1; 814 hci_notify_if_sco_can_send_now(); 815 } 816 #endif 817 818 // used for internal checks in l2cap.c 819 bool hci_is_packet_buffer_reserved(void){ 820 return hci_stack->hci_packet_buffer_reserved; 821 } 822 823 void hci_reserve_packet_buffer(void){ 824 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 825 hci_stack->hci_packet_buffer_reserved = true; 826 } 827 828 void hci_release_packet_buffer(void){ 829 btstack_assert(hci_stack->hci_packet_buffer_reserved); 830 hci_stack->hci_packet_buffer_reserved = false; 831 hci_emit_transport_packet_sent(); 832 } 833 834 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 835 static int hci_transport_synchronous(void){ 836 return hci_stack->hci_transport->can_send_packet_now == NULL; 837 } 838 839 // used for debugging 840 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 841 static void hci_controller_dump_packets(void){ 842 // format: "{handle:04x}:{count:02d} " 843 char summaries[3][7 * 8 + 1]; 844 uint16_t totals[3]; 845 uint8_t index; 846 for (index = 0 ; index < 3 ; index++){ 847 summaries[index][0] = 0; 848 totals[index] = 0; 849 } 850 btstack_linked_item_t *it; 851 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 852 hci_connection_t * connection = (hci_connection_t *) it; 853 switch (connection->address_type){ 854 case BD_ADDR_TYPE_ACL: 855 index = 0; 856 break; 857 case BD_ADDR_TYPE_SCO: 858 index = 2; 859 break; 860 default: 861 index = 1; 862 break; 863 } 864 totals[index] += connection->num_packets_sent; 865 char item_text[10]; 866 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 867 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 868 } 869 for (index = 0 ; index < 3 ; index++){ 870 if (summaries[index][0] == 0){ 871 summaries[index][0] = '-'; 872 summaries[index][1] = 0; 873 } 874 } 875 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 876 } 877 #endif 878 879 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 880 881 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 882 883 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 884 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 885 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 886 max_acl_data_packet_length = hci_stack->le_data_packets_length; 887 } 888 889 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 890 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 891 max_acl_data_packet_length = connection->le_max_tx_octets; 892 } 893 #endif 894 895 log_debug("hci_send_acl_packet_fragments entered"); 896 897 uint8_t status = ERROR_CODE_SUCCESS; 898 // multiple packets could be sent on a synchronous HCI transport 899 while (true){ 900 901 log_debug("hci_send_acl_packet_fragments loop entered"); 902 903 // get current data 904 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 905 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 906 bool more_fragments = false; 907 908 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 909 if (current_acl_data_packet_length > max_acl_data_packet_length){ 910 more_fragments = true; 911 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 912 } 913 914 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragment) 915 if (acl_header_pos > 0u){ 916 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 917 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 918 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 919 } 920 921 // update header len 922 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 923 924 // count packet 925 connection->num_packets_sent++; 926 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 927 928 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 929 if (more_fragments){ 930 // update start of next fragment to send 931 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 932 } else { 933 // done 934 hci_stack->acl_fragmentation_pos = 0; 935 hci_stack->acl_fragmentation_total_size = 0; 936 } 937 938 // send packet 939 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 940 const int size = current_acl_data_packet_length + 4; 941 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 942 hci_stack->acl_fragmentation_tx_active = 1; 943 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 944 if (err != 0){ 945 // no error from HCI Transport expected 946 status = ERROR_CODE_HARDWARE_FAILURE; 947 break; 948 } 949 950 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 951 hci_controller_dump_packets(); 952 #endif 953 954 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 955 956 // done yet? 957 if (!more_fragments) break; 958 959 // can send more? 960 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 961 } 962 963 log_debug("hci_send_acl_packet_fragments loop over"); 964 965 // release buffer now for synchronous transport 966 if (hci_transport_synchronous()){ 967 hci_stack->acl_fragmentation_tx_active = 0; 968 hci_release_packet_buffer(); 969 } 970 971 return status; 972 } 973 974 // pre: caller has reserved the packet buffer 975 uint8_t hci_send_acl_packet_buffer(int size){ 976 btstack_assert(hci_stack->hci_packet_buffer_reserved); 977 978 uint8_t * packet = hci_stack->hci_packet_buffer; 979 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 980 981 hci_connection_t *connection = hci_connection_for_handle( con_handle); 982 if (!connection) { 983 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 984 hci_release_packet_buffer(); 985 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 986 } 987 988 // check for free places on Bluetooth module 989 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 990 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 991 hci_release_packet_buffer(); 992 return BTSTACK_ACL_BUFFERS_FULL; 993 } 994 995 #ifdef ENABLE_CLASSIC 996 hci_connection_timestamp(connection); 997 #endif 998 999 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 1000 1001 // setup data 1002 hci_stack->acl_fragmentation_total_size = size; 1003 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1004 1005 return hci_send_acl_packet_fragments(connection); 1006 } 1007 1008 #ifdef ENABLE_CLASSIC 1009 // pre: caller has reserved the packet buffer 1010 uint8_t hci_send_sco_packet_buffer(int size){ 1011 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1012 1013 uint8_t * packet = hci_stack->hci_packet_buffer; 1014 1015 // skip checks in loopback mode 1016 if (!hci_stack->loopback_mode){ 1017 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1018 1019 // check for free places on Bluetooth module 1020 if (!hci_can_send_prepared_sco_packet_now()) { 1021 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1022 hci_release_packet_buffer(); 1023 return BTSTACK_ACL_BUFFERS_FULL; 1024 } 1025 1026 // track send packet in connection struct 1027 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1028 if (!connection) { 1029 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1030 hci_release_packet_buffer(); 1031 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1032 } 1033 1034 if (hci_have_usb_transport()){ 1035 // token used 1036 hci_stack->sco_can_send_now = false; 1037 } else { 1038 if (hci_stack->synchronous_flow_control_enabled){ 1039 connection->num_packets_sent++; 1040 } else { 1041 connection->sco_tx_ready--; 1042 } 1043 } 1044 } 1045 1046 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1047 1048 #ifdef HAVE_SCO_TRANSPORT 1049 hci_stack->sco_transport->send_packet(packet, size); 1050 hci_release_packet_buffer(); 1051 hci_emit_transport_packet_sent(); 1052 1053 return 0; 1054 #else 1055 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1056 uint8_t status; 1057 if (err == 0){ 1058 status = ERROR_CODE_SUCCESS; 1059 } else { 1060 status = ERROR_CODE_HARDWARE_FAILURE; 1061 } 1062 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 1063 hci_release_packet_buffer(); 1064 } 1065 return status; 1066 #endif 1067 } 1068 #endif 1069 1070 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1071 static uint8_t hci_send_iso_packet_fragments(void){ 1072 1073 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1074 uint8_t status = ERROR_CODE_SUCCESS; 1075 // multiple packets could be send on a synchronous HCI transport 1076 while (true){ 1077 1078 // get current data 1079 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1080 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1081 bool more_fragments = false; 1082 1083 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1084 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1085 more_fragments = true; 1086 current_iso_data_packet_length = max_iso_data_packet_length; 1087 } 1088 1089 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1090 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1091 uint8_t pb_flags; 1092 if (iso_header_pos == 0u){ 1093 // first fragment, keep TS field 1094 pb_flags = more_fragments ? 0x00 : 0x02; 1095 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1096 } else { 1097 // later fragment, drop TS field 1098 pb_flags = more_fragments ? 0x01 : 0x03; 1099 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1100 } 1101 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1102 1103 // update header len 1104 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1105 1106 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1107 if (more_fragments){ 1108 // update start of next fragment to send 1109 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1110 } else { 1111 // done 1112 hci_stack->iso_fragmentation_pos = 0; 1113 hci_stack->iso_fragmentation_total_size = 0; 1114 } 1115 1116 // send packet 1117 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1118 const int size = current_iso_data_packet_length + 4; 1119 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1120 hci_stack->iso_fragmentation_tx_active = true; 1121 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1122 if (err != 0){ 1123 // no error from HCI Transport expected 1124 status = ERROR_CODE_HARDWARE_FAILURE; 1125 } 1126 1127 // done yet? 1128 if (!more_fragments) break; 1129 1130 // can send more? 1131 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1132 } 1133 1134 // release buffer now for synchronous transport 1135 if (hci_transport_synchronous()){ 1136 hci_stack->iso_fragmentation_tx_active = false; 1137 hci_release_packet_buffer(); 1138 hci_emit_transport_packet_sent(); 1139 } 1140 1141 return status; 1142 } 1143 1144 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1145 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1146 1147 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1148 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1149 if (iso_stream == NULL){ 1150 hci_release_packet_buffer(); 1151 hci_iso_notify_can_send_now(); 1152 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1153 } 1154 1155 // TODO: check for space on controller 1156 1157 // skip iso packets if needed 1158 if (iso_stream->num_packets_to_skip > 0){ 1159 iso_stream->num_packets_to_skip--; 1160 // pretend it was processed and trigger next one 1161 hci_release_packet_buffer(); 1162 hci_iso_notify_can_send_now(); 1163 return ERROR_CODE_SUCCESS; 1164 } 1165 1166 // track outgoing packet sent 1167 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1168 iso_stream->num_packets_sent++; 1169 1170 // setup data 1171 hci_stack->iso_fragmentation_total_size = size; 1172 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1173 1174 return hci_send_iso_packet_fragments(); 1175 } 1176 #endif 1177 1178 static void acl_handler(uint8_t *packet, uint16_t size){ 1179 1180 // get info 1181 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1182 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1183 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1184 uint16_t acl_length = READ_ACL_LENGTH(packet); 1185 1186 // ignore non-registered handle 1187 if (!conn){ 1188 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1189 return; 1190 } 1191 1192 // assert packet is complete 1193 if ((acl_length + 4u) != size){ 1194 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1195 return; 1196 } 1197 1198 #ifdef ENABLE_CLASSIC 1199 // update idle timestamp 1200 hci_connection_timestamp(conn); 1201 #endif 1202 1203 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1204 hci_stack->host_completed_packets = 1; 1205 conn->num_packets_completed++; 1206 #endif 1207 1208 // handle different packet types 1209 switch (acl_flags & 0x03u) { 1210 1211 case 0x01: // continuation fragment 1212 1213 // sanity checks 1214 if (conn->acl_recombination_pos == 0u) { 1215 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1216 return; 1217 } 1218 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1219 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1220 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1221 conn->acl_recombination_pos = 0; 1222 return; 1223 } 1224 1225 // append fragment payload (header already stored) 1226 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1227 &packet[4], acl_length); 1228 conn->acl_recombination_pos += acl_length; 1229 1230 // forward complete L2CAP packet if complete. 1231 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1232 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1233 // reset recombination buffer 1234 conn->acl_recombination_length = 0; 1235 conn->acl_recombination_pos = 0; 1236 } 1237 break; 1238 1239 case 0x02: { // first fragment 1240 1241 // sanity check 1242 if (conn->acl_recombination_pos) { 1243 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1244 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1245 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1246 } 1247 conn->acl_recombination_pos = 0; 1248 } 1249 1250 // peek into L2CAP packet! 1251 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1252 1253 // compare fragment size to L2CAP packet size 1254 if (acl_length >= (l2cap_length + 4u)){ 1255 // forward fragment as L2CAP packet 1256 hci_emit_acl_packet(packet, acl_length + 4u); 1257 } else { 1258 1259 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1260 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1261 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1262 return; 1263 } 1264 1265 // store first fragment and tweak acl length for complete package 1266 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1267 packet, acl_length + 4u); 1268 conn->acl_recombination_pos = acl_length + 4u; 1269 conn->acl_recombination_length = l2cap_length; 1270 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1271 } 1272 break; 1273 1274 } 1275 default: 1276 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1277 return; 1278 } 1279 1280 // execute main loop 1281 hci_run(); 1282 } 1283 1284 static void hci_connection_stop_timer(hci_connection_t * conn){ 1285 btstack_run_loop_remove_timer(&conn->timeout); 1286 #ifdef ENABLE_CLASSIC 1287 btstack_run_loop_remove_timer(&conn->timeout_sco); 1288 #endif 1289 } 1290 1291 static void hci_shutdown_connection(hci_connection_t *conn){ 1292 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1293 1294 #ifdef ENABLE_CLASSIC 1295 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1296 bd_addr_type_t addr_type = conn->address_type; 1297 #endif 1298 #ifdef HAVE_SCO_TRANSPORT 1299 hci_con_handle_t con_handle = conn->con_handle; 1300 #endif 1301 #endif 1302 1303 hci_connection_stop_timer(conn); 1304 1305 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1306 btstack_memory_hci_connection_free( conn ); 1307 1308 // now it's gone 1309 hci_emit_nr_connections_changed(); 1310 1311 #ifdef ENABLE_CLASSIC 1312 #ifdef ENABLE_SCO_OVER_HCI 1313 // update SCO 1314 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1315 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1316 } 1317 #endif 1318 #ifdef HAVE_SCO_TRANSPORT 1319 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1320 hci_stack->sco_transport->close(con_handle); 1321 } 1322 #endif 1323 #endif 1324 } 1325 1326 #ifdef ENABLE_CLASSIC 1327 1328 static const uint16_t hci_acl_packet_type_sizes[] = { 1329 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1330 HCI_ACL_DH1_SIZE, 0, 0, 0, 1331 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1332 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1333 }; 1334 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1335 0, // 3 slot packets 1336 1, // 5 slot packets 1337 25, // EDR 2 mpbs 1338 26, // EDR 3 mbps 1339 39, // 3 slot EDR packtes 1340 40, // 5 slot EDR packet 1341 }; 1342 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1343 0x0f00, // 3 slot packets 1344 0xf000, // 5 slot packets 1345 0x1102, // EDR 2 mpbs 1346 0x2204, // EDR 3 mbps 1347 0x0300, // 3 slot EDR packtes 1348 0x3000, // 5 slot EDR packet 1349 }; 1350 1351 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1352 // enable packet types based on size 1353 uint16_t packet_types = 0; 1354 unsigned int i; 1355 for (i=0;i<16;i++){ 1356 if (hci_acl_packet_type_sizes[i] == 0) continue; 1357 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1358 packet_types |= 1 << i; 1359 } 1360 } 1361 // disable packet types due to missing local supported features 1362 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1363 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1364 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1365 if (feature_set) continue; 1366 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1367 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1368 } 1369 return packet_types; 1370 } 1371 1372 uint16_t hci_usable_acl_packet_types(void){ 1373 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1374 // flip bits for "may not be used" 1375 return active_packet_types ^ 0x3306; 1376 } 1377 1378 void hci_enable_acl_packet_types(uint16_t packet_types){ 1379 hci_stack->enabled_packet_types_acl = packet_types; 1380 } 1381 1382 static const struct { 1383 uint8_t feature_index; 1384 uint16_t feature_packet_mask; 1385 } hci_sco_packet_type_feature_requirements[] = { 1386 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1387 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1388 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1389 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1390 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1391 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1392 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1393 }; 1394 1395 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1396 static const struct { 1397 uint16_t type; 1398 uint16_t payload_length; 1399 } hci_sco_packet_type_to_payload_length[] = { 1400 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1401 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1402 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1403 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1404 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1405 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1406 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1407 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1408 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1409 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1410 }; 1411 1412 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1413 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1414 unsigned int i; 1415 // disable packet types due to missing local supported features 1416 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1417 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1418 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1419 if (feature_set) continue; 1420 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1421 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1422 } 1423 return packet_types; 1424 } 1425 1426 uint16_t hci_usable_sco_packet_types(void){ 1427 return hci_stack->usable_packet_types_sco; 1428 } 1429 1430 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1431 uint8_t i; 1432 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1433 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1434 return hci_sco_packet_type_to_payload_length[i].payload_length; 1435 } 1436 } 1437 return 0; 1438 } 1439 1440 #endif 1441 1442 uint8_t* hci_get_outgoing_packet_buffer(void){ 1443 // hci packet buffer is >= acl data packet length 1444 return hci_stack->hci_packet_buffer; 1445 } 1446 1447 uint16_t hci_max_acl_data_packet_length(void){ 1448 return hci_stack->acl_data_packet_length; 1449 } 1450 1451 #ifdef ENABLE_CLASSIC 1452 bool hci_extended_sco_link_supported(void){ 1453 // No. 31, byte 3, bit 7 1454 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1455 } 1456 #endif 1457 1458 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1459 // No. 54, byte 6, bit 6 1460 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1461 } 1462 1463 #ifdef ENABLE_CLASSIC 1464 static bool gap_ssp_supported(void){ 1465 // No. 51, byte 6, bit 3 1466 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1467 } 1468 #endif 1469 1470 bool hci_classic_supported(void){ 1471 #ifdef ENABLE_CLASSIC 1472 // No. 37, byte 4, bit 5, = No BR/EDR Support 1473 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1474 #else 1475 return false; 1476 #endif 1477 } 1478 1479 bool hci_le_supported(void){ 1480 #ifdef ENABLE_BLE 1481 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1482 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1483 #else 1484 return false; 1485 #endif 1486 } 1487 1488 static bool hci_command_supported(uint8_t command_index){ 1489 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1490 } 1491 1492 #ifdef ENABLE_BLE 1493 1494 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1495 bool hci_le_extended_advertising_supported(void){ 1496 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1497 } 1498 #endif 1499 1500 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1501 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1502 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1503 } else { 1504 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1505 } 1506 } 1507 1508 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1509 *addr_type = hci_stack->le_own_addr_type; 1510 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1511 } 1512 1513 #ifdef ENABLE_LE_PERIPHERAL 1514 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1515 *addr_type = hci_stack->le_advertisements_own_addr_type; 1516 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1517 } 1518 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1519 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1520 if (advertising_handle == 0){ 1521 gap_le_get_own_advertisements_address(addr_type, addr); 1522 } else { 1523 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1524 if (advertising_set != NULL){ 1525 switch (advertising_set->extended_params.own_address_type){ 1526 case BD_ADDR_TYPE_LE_PUBLIC: 1527 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1528 memcpy(addr, hci_stack->local_bd_addr, 6); 1529 break; 1530 case BD_ADDR_TYPE_LE_RANDOM: 1531 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1532 memcpy(addr, advertising_set->random_address, 6); 1533 break; 1534 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1535 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1536 // do nothing as random address was already set from enhanced connection complete 1537 break; 1538 default: 1539 break; 1540 } 1541 } 1542 } 1543 } 1544 #endif 1545 #endif 1546 1547 #ifdef ENABLE_LE_CENTRAL 1548 1549 /** 1550 * @brief Get own addr type and address used for LE connections (Central) 1551 */ 1552 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1553 *addr_type = hci_stack->le_connection_own_addr_type; 1554 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1555 } 1556 1557 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1558 1559 uint16_t offset = 3; 1560 uint8_t num_reports = packet[offset]; 1561 offset += 1; 1562 1563 uint16_t i; 1564 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1565 for (i=0; (i<num_reports) && (offset < size);i++){ 1566 // sanity checks on data_length: 1567 uint8_t data_length = packet[offset + 8]; 1568 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1569 if ((offset + 9u + data_length + 1u) > size) return; 1570 // setup event 1571 uint8_t event_size = 10u + data_length; 1572 uint16_t pos = 0; 1573 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1574 event[pos++] = event_size; 1575 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1576 offset += 8; 1577 pos += 8; 1578 event[pos++] = packet[offset + 1 + data_length]; // rssi 1579 event[pos++] = data_length; 1580 offset++; 1581 (void)memcpy(&event[pos], &packet[offset], data_length); 1582 pos += data_length; 1583 offset += data_length + 1u; // rssi 1584 hci_emit_btstack_event(event, pos, 1); 1585 } 1586 } 1587 1588 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1589 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1590 uint16_t offset = 3; 1591 uint8_t num_reports = packet[offset++]; 1592 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1593 uint8_t i; 1594 for (i=0; (i<num_reports) && (offset < size);i++){ 1595 // sanity checks on data_length: 1596 uint16_t data_length = packet[offset + 23]; 1597 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1598 if ((offset + 24u + data_length) > size) return; 1599 uint16_t event_type = little_endian_read_16(packet, offset); 1600 offset += 2; 1601 if ((event_type & 0x10) != 0) { 1602 // setup legacy event 1603 uint8_t legacy_event_type; 1604 switch (event_type){ 1605 case 0x13: // 0b0010011 1606 // ADV_IND 1607 legacy_event_type = 0; 1608 break; 1609 case 0x15: // 0b0010101 1610 // ADV_DIRECT_IND 1611 legacy_event_type = 1; 1612 break; 1613 case 0x12: // 0b0010010 1614 // ADV_SCAN_IND 1615 legacy_event_type = 2; 1616 break; 1617 case 0x10: // 0b0010000: 1618 // ADV_NONCONN_IND 1619 legacy_event_type = 3; 1620 break; 1621 case 0x1B: // 0b0011011 1622 case 0x1A: // 0b0011010 1623 // SCAN_RSP 1624 legacy_event_type = 4; 1625 break; 1626 default: 1627 legacy_event_type = 0; 1628 break; 1629 } 1630 uint16_t pos = 0; 1631 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1632 event[pos++] = 10u + data_length; 1633 event[pos++] = legacy_event_type; 1634 // copy address type + address 1635 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1636 offset += 7; 1637 pos += 7; 1638 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1639 offset += 4; 1640 // copy rssi 1641 event[pos++] = packet[offset++]; 1642 // skip periodic advertising interval and direct address 1643 offset += 9; 1644 // copy data len + data; 1645 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1646 pos += 1 +data_length; 1647 offset += 1+ data_length; 1648 hci_emit_btstack_event(event, pos, 1); 1649 } else { 1650 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1651 uint8_t report_len = 24 + data_length; 1652 event[1] = report_len; 1653 little_endian_store_16(event, 2, event_type); 1654 memcpy(&event[4], &packet[offset], report_len); 1655 offset += report_len; 1656 hci_emit_btstack_event(event, 2 + report_len, 1); 1657 } 1658 } 1659 } 1660 #endif 1661 1662 #endif 1663 #endif 1664 1665 #ifdef ENABLE_BLE 1666 #ifdef ENABLE_LE_PERIPHERAL 1667 static void hci_update_advertisements_enabled_for_current_roles(void){ 1668 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1669 // get number of active le slave connections 1670 int num_slave_connections = 0; 1671 btstack_linked_list_iterator_t it; 1672 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1673 while (btstack_linked_list_iterator_has_next(&it)){ 1674 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1675 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1676 if (con->state != OPEN) continue; 1677 if (con->role != HCI_ROLE_SLAVE) continue; 1678 if (!hci_is_le_connection(con)) continue; 1679 num_slave_connections++; 1680 } 1681 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1682 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1683 } else { 1684 hci_stack->le_advertisements_enabled_for_current_roles = false; 1685 } 1686 } 1687 #endif 1688 #endif 1689 1690 #ifdef ENABLE_CLASSIC 1691 static void gap_run_set_local_name(void){ 1692 hci_reserve_packet_buffer(); 1693 uint8_t * packet = hci_stack->hci_packet_buffer; 1694 // construct HCI Command and send 1695 uint16_t opcode = hci_write_local_name.opcode; 1696 packet[0] = opcode & 0xff; 1697 packet[1] = opcode >> 8; 1698 packet[2] = DEVICE_NAME_LEN; 1699 memset(&packet[3], 0, DEVICE_NAME_LEN); 1700 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1701 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1702 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1703 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1704 // expand '00:00:00:00:00:00' in name with bd_addr 1705 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1706 hci_send_prepared_cmd_packet(); 1707 } 1708 1709 static void gap_run_set_eir_data(void){ 1710 hci_reserve_packet_buffer(); 1711 uint8_t * packet = hci_stack->hci_packet_buffer; 1712 // construct HCI Command in-place and send 1713 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1714 uint16_t offset = 0; 1715 packet[offset++] = opcode & 0xff; 1716 packet[offset++] = opcode >> 8; 1717 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1718 packet[offset++] = 0; // FEC not required 1719 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1720 if (hci_stack->eir_data){ 1721 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1722 ad_context_t context; 1723 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1724 uint8_t data_type = ad_iterator_get_data_type(&context); 1725 uint8_t size = ad_iterator_get_data_len(&context); 1726 const uint8_t *data = ad_iterator_get_data(&context); 1727 // copy item 1728 packet[offset++] = size + 1; 1729 packet[offset++] = data_type; 1730 memcpy(&packet[offset], data, size); 1731 // update name item 1732 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1733 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1734 } 1735 offset += size; 1736 } 1737 } else { 1738 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1739 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1740 packet[offset++] = bytes_to_copy + 1; 1741 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1742 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1743 // expand '00:00:00:00:00:00' in name with bd_addr 1744 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1745 } 1746 hci_send_prepared_cmd_packet(); 1747 } 1748 1749 static void hci_run_gap_tasks_classic(void){ 1750 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1751 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1752 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1753 return; 1754 } 1755 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1756 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1757 gap_run_set_local_name(); 1758 return; 1759 } 1760 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1761 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1762 gap_run_set_eir_data(); 1763 return; 1764 } 1765 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1766 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1767 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1768 return; 1769 } 1770 // write page scan activity 1771 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1772 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1773 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1774 return; 1775 } 1776 // write page scan type 1777 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1778 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1779 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1780 return; 1781 } 1782 // write page timeout 1783 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1784 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1785 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1786 return; 1787 } 1788 // send scan enable 1789 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1790 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1791 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1792 return; 1793 } 1794 // send write scan activity 1795 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1796 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1797 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1798 return; 1799 } 1800 // send write inquiry transmit power level 1801 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1802 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1803 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1804 return; 1805 } 1806 } 1807 #endif 1808 1809 #ifndef HAVE_HOST_CONTROLLER_API 1810 1811 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1812 if (!hci_stack->config) return 0; 1813 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1814 return baud_rate; 1815 } 1816 1817 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1818 UNUSED(ds); 1819 1820 switch (hci_stack->substate){ 1821 case HCI_INIT_W4_SEND_RESET: 1822 log_info("Resend HCI Reset"); 1823 hci_stack->substate = HCI_INIT_SEND_RESET; 1824 hci_stack->num_cmd_packets = 1; 1825 hci_run(); 1826 break; 1827 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1828 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1829 if (hci_stack->hci_transport->reset_link){ 1830 hci_stack->hci_transport->reset_link(); 1831 } 1832 1833 /* fall through */ 1834 1835 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1836 log_info("Resend HCI Reset - CSR Warm Boot"); 1837 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1838 hci_stack->num_cmd_packets = 1; 1839 hci_run(); 1840 break; 1841 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1842 if (hci_stack->hci_transport->set_baudrate){ 1843 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1844 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1845 hci_stack->hci_transport->set_baudrate(baud_rate); 1846 } 1847 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1848 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1849 if (hci_stack->hci_transport->reset_link){ 1850 log_info("Link Reset"); 1851 hci_stack->hci_transport->reset_link(); 1852 } 1853 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1854 hci_run(); 1855 } 1856 break; 1857 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1858 // otherwise continue 1859 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1860 hci_send_cmd(&hci_read_local_supported_commands); 1861 break; 1862 default: 1863 break; 1864 } 1865 } 1866 #endif 1867 1868 static void hci_initializing_next_state(void){ 1869 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1870 } 1871 1872 static void hci_init_done(void){ 1873 // done. tell the app 1874 log_info("hci_init_done -> HCI_STATE_WORKING"); 1875 hci_stack->state = HCI_STATE_WORKING; 1876 hci_emit_state(); 1877 } 1878 1879 // assumption: hci_can_send_command_packet_now() == true 1880 static void hci_initializing_run(void){ 1881 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1882 1883 if (!hci_can_send_command_packet_now()) return; 1884 1885 #ifndef HAVE_HOST_CONTROLLER_API 1886 bool need_baud_change = hci_stack->config 1887 && hci_stack->chipset 1888 && hci_stack->chipset->set_baudrate_command 1889 && hci_stack->hci_transport->set_baudrate 1890 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1891 #endif 1892 1893 switch (hci_stack->substate){ 1894 case HCI_INIT_SEND_RESET: 1895 hci_state_reset(); 1896 1897 #ifndef HAVE_HOST_CONTROLLER_API 1898 // prepare reset if command complete not received in 100ms 1899 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1900 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1901 btstack_run_loop_add_timer(&hci_stack->timeout); 1902 #endif 1903 // send command 1904 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1905 hci_send_cmd(&hci_reset); 1906 break; 1907 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1908 hci_send_cmd(&hci_read_local_version_information); 1909 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1910 break; 1911 1912 #ifndef HAVE_HOST_CONTROLLER_API 1913 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1914 hci_state_reset(); 1915 // prepare reset if command complete not received in 100ms 1916 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1917 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1918 btstack_run_loop_add_timer(&hci_stack->timeout); 1919 // send command 1920 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1921 hci_send_cmd(&hci_reset); 1922 break; 1923 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1924 hci_state_reset(); 1925 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1926 hci_send_cmd(&hci_reset); 1927 break; 1928 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1929 hci_reserve_packet_buffer(); 1930 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1931 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1932 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1933 hci_send_prepared_cmd_packet(); 1934 break; 1935 } 1936 case HCI_INIT_SET_BD_ADDR: 1937 hci_reserve_packet_buffer(); 1938 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1939 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1940 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1941 hci_send_prepared_cmd_packet(); 1942 break; 1943 case HCI_INIT_SEND_READ_LOCAL_NAME: 1944 #ifdef ENABLE_CLASSIC 1945 hci_send_cmd(&hci_read_local_name); 1946 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1947 break; 1948 #endif 1949 /* fall through */ 1950 1951 case HCI_INIT_SEND_BAUD_CHANGE: 1952 if (need_baud_change) { 1953 hci_reserve_packet_buffer(); 1954 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1955 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1956 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1957 hci_send_prepared_cmd_packet(); 1958 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1959 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1960 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1961 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1962 btstack_run_loop_add_timer(&hci_stack->timeout); 1963 } 1964 break; 1965 } 1966 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1967 1968 /* fall through */ 1969 1970 case HCI_INIT_CUSTOM_INIT: 1971 case HCI_INIT_CUSTOM_PRE_INIT: 1972 // Custom initialization 1973 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1974 hci_reserve_packet_buffer(); 1975 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1976 bool send_cmd = false; 1977 switch (hci_stack->chipset_result){ 1978 case BTSTACK_CHIPSET_VALID_COMMAND: 1979 send_cmd = true; 1980 switch (hci_stack->substate){ 1981 case HCI_INIT_CUSTOM_INIT: 1982 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1983 break; 1984 case HCI_INIT_CUSTOM_PRE_INIT: 1985 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1986 break; 1987 default: 1988 btstack_assert(false); 1989 break; 1990 } 1991 break; 1992 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1993 send_cmd = true; 1994 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1995 log_info("CSR Warm Boot"); 1996 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1997 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1998 btstack_run_loop_add_timer(&hci_stack->timeout); 1999 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2000 && hci_stack->config 2001 && hci_stack->chipset 2002 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2003 && hci_stack->hci_transport->set_baudrate 2004 && hci_transport_uart_get_main_baud_rate()){ 2005 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2006 } else { 2007 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2008 } 2009 break; 2010 default: 2011 break; 2012 } 2013 2014 if (send_cmd){ 2015 hci_send_prepared_cmd_packet(); 2016 break; 2017 } else { 2018 hci_release_packet_buffer(); 2019 } 2020 log_info("Init script done"); 2021 2022 // Custom Pre-Init complete, start regular init with HCI Reset 2023 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2024 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2025 hci_send_cmd(&hci_reset); 2026 break; 2027 } 2028 2029 // Init script download on Broadcom chipsets causes: 2030 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2031 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2032 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2033 2034 // - baud rate to reset, restore UART baud rate if needed 2035 if (need_baud_change) { 2036 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2037 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2038 hci_stack->hci_transport->set_baudrate(baud_rate); 2039 } 2040 2041 uint16_t bcm_delay_ms = 300; 2042 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2043 // -> Work around: wait here. 2044 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2045 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2046 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2047 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2048 btstack_run_loop_add_timer(&hci_stack->timeout); 2049 break; 2050 } 2051 } 2052 #endif 2053 /* fall through */ 2054 2055 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2056 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2057 hci_send_cmd(&hci_read_local_supported_commands); 2058 break; 2059 case HCI_INIT_READ_BD_ADDR: 2060 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2061 hci_send_cmd(&hci_read_bd_addr); 2062 break; 2063 case HCI_INIT_READ_BUFFER_SIZE: 2064 // only read buffer size if supported 2065 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2066 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2067 hci_send_cmd(&hci_read_buffer_size); 2068 break; 2069 } 2070 2071 /* fall through */ 2072 2073 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2074 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2075 hci_send_cmd(&hci_read_local_supported_features); 2076 break; 2077 2078 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2079 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2080 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2081 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2082 break; 2083 case HCI_INIT_HOST_BUFFER_SIZE: 2084 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2085 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2086 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2087 break; 2088 #endif 2089 2090 case HCI_INIT_SET_EVENT_MASK: 2091 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2092 if (hci_le_supported()){ 2093 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2094 } else { 2095 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2096 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2097 } 2098 break; 2099 2100 case HCI_INIT_SET_EVENT_MASK_2: 2101 // On Bluetooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2102 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2103 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2104 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2105 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2106 // Encryption Change Event v2 - bit 25 2107 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2108 break; 2109 } 2110 2111 #ifdef ENABLE_CLASSIC 2112 /* fall through */ 2113 2114 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2115 if (hci_classic_supported() && gap_ssp_supported()){ 2116 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2117 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2118 break; 2119 } 2120 2121 /* fall through */ 2122 2123 case HCI_INIT_WRITE_INQUIRY_MODE: 2124 if (hci_classic_supported()){ 2125 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2126 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2127 break; 2128 } 2129 2130 /* fall through */ 2131 2132 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2133 // skip write secure connections host support if not supported or disabled 2134 if (hci_classic_supported() && hci_stack->secure_connections_enable 2135 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2136 hci_stack->secure_connections_active = true; 2137 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2138 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2139 break; 2140 } 2141 2142 /* fall through */ 2143 2144 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2145 // skip set min encryption key size 2146 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2147 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2148 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2149 break; 2150 } 2151 2152 #ifdef ENABLE_SCO_OVER_HCI 2153 /* fall through */ 2154 2155 // only sent if ENABLE_SCO_OVER_HCI is defined 2156 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2157 // skip write synchronous flow control if not supported 2158 if (hci_classic_supported() 2159 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2160 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2161 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2162 break; 2163 } 2164 /* fall through */ 2165 2166 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2167 // skip write default erroneous data reporting if not supported 2168 if (hci_classic_supported() 2169 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2170 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2171 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2172 break; 2173 } 2174 #endif 2175 2176 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2177 /* fall through */ 2178 2179 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2180 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2181 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2182 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2183 #ifdef ENABLE_SCO_OVER_HCI 2184 log_info("BCM: Route SCO data via HCI transport"); 2185 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2186 #endif 2187 #ifdef ENABLE_SCO_OVER_PCM 2188 log_info("BCM: Route SCO data via PCM interface"); 2189 #ifdef ENABLE_BCM_PCM_WBS 2190 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2191 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2192 #else 2193 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2194 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2195 #endif 2196 #endif 2197 break; 2198 } 2199 #endif 2200 2201 #ifdef ENABLE_SCO_OVER_PCM 2202 /* fall through */ 2203 2204 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2205 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2206 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2207 log_info("BCM: Config PCM interface for I2S"); 2208 #ifdef ENABLE_BCM_PCM_WBS 2209 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2210 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2211 #else 2212 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2213 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2214 #endif 2215 break; 2216 } 2217 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2218 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2219 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2220 log_info("BCM: Config PCM Data format"); 2221 // msb first, fill bits 0, left justified 2222 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2223 break; 2224 } 2225 #ifdef HAVE_BCM_PCM2 2226 case HCI_INIT_BCM_PCM2_SETUP: 2227 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2228 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2229 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2230 uint32_t pcm_clock_freq; 2231 uint8_t ch_0_period; 2232 #ifdef ENABLE_BCM_PCM_WBS 2233 // 512 kHz, resample 8 kHz to 16 khz 2234 pcm_clock_freq = 512000; 2235 ch_0_period = 1; 2236 #else 2237 // 256 khz, 8 khz output 2238 pcm_clock_freq = 256000; 2239 ch_0_period = 0; 2240 #endif 2241 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2242 hci_send_cmd(&hci_bcm_pcm2_setup, 2243 0x00, // Action = Write 2244 0x00, // Test_Options = None 2245 op_mode, // Op_Mode 2246 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2247 pcm_clock_freq, // PCM_Clock_Freq 2248 0x01, // Sync_Signal_Width 2249 0x0F, // Slot_Width 2250 0x01, // NumberOfSlots 2251 0x00, // Bank_0_Fill_Mode = 0s 2252 0x00, // Bank_0_Number_of_Fill_Bits 2253 0x00, // Bank_0_Programmable_Fill_Data 2254 0x00, // Bank_1_Fill_Mode = 0s 2255 0x00, // Bank_1_Number_of_Fill_Bits 2256 0x00, // Bank_1_Programmable_Fill_Data 2257 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2258 0x00, // Ch_0_Slot_Number 2259 0x01, // Ch_1_Slot_Number 2260 0x02, // Ch_2_Slot_Number 2261 0x03, // Ch_3_Slot_Number 2262 0x04, // Ch_4_Slot_Number 2263 ch_0_period, // Ch_0_Period 2264 0x00, // Ch_1_Period 2265 0x00 // Ch_2_Period 2266 ); 2267 break; 2268 } 2269 #endif 2270 #endif /* ENABLE_SCO_OVER_PCM */ 2271 #endif /* ENABLE_CLASSIC */ 2272 2273 #ifdef ENABLE_BLE 2274 /* fall through */ 2275 2276 // LE INIT 2277 case HCI_INIT_LE_READ_BUFFER_SIZE: 2278 if (hci_le_supported()){ 2279 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2280 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2281 hci_send_cmd(&hci_le_read_buffer_size_v2); 2282 } else { 2283 hci_send_cmd(&hci_le_read_buffer_size); 2284 } 2285 break; 2286 } 2287 2288 /* fall through */ 2289 2290 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2291 // skip write le host if not supported (e.g. on LE only EM9301) 2292 if (hci_le_supported() 2293 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2294 // LE Supported Host = 1, Simultaneous Host = 0 2295 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2296 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2297 break; 2298 } 2299 2300 /* fall through */ 2301 2302 case HCI_INIT_LE_SET_EVENT_MASK: 2303 if (hci_le_supported()){ 2304 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2305 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2306 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2307 #else 2308 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2309 #endif 2310 break; 2311 } 2312 #endif 2313 2314 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2315 /* fall through */ 2316 2317 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2318 if (hci_le_supported() 2319 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2320 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2321 hci_send_cmd(&hci_le_read_maximum_data_length); 2322 break; 2323 } 2324 2325 /* fall through */ 2326 2327 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2328 if (hci_le_supported() 2329 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2330 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2331 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2332 break; 2333 } 2334 #endif 2335 2336 #ifdef ENABLE_LE_CENTRAL 2337 /* fall through */ 2338 2339 case HCI_INIT_READ_WHITE_LIST_SIZE: 2340 if (hci_le_supported()){ 2341 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2342 hci_send_cmd(&hci_le_read_white_list_size); 2343 break; 2344 } 2345 2346 #endif 2347 2348 #ifdef ENABLE_LE_PERIPHERAL 2349 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2350 /* fall through */ 2351 2352 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2353 if (hci_le_extended_advertising_supported()){ 2354 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2355 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2356 break; 2357 } 2358 #endif 2359 #endif 2360 2361 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2362 /* fall through */ 2363 2364 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2365 if (hci_le_supported()) { 2366 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2367 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2368 break; 2369 } 2370 #endif 2371 2372 /* fall through */ 2373 2374 case HCI_INIT_DONE: 2375 hci_stack->substate = HCI_INIT_DONE; 2376 // main init sequence complete 2377 #ifdef ENABLE_CLASSIC 2378 // check if initial Classic GAP Tasks are completed 2379 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2380 hci_run_gap_tasks_classic(); 2381 break; 2382 } 2383 #endif 2384 #ifdef ENABLE_BLE 2385 #ifdef ENABLE_LE_CENTRAL 2386 // check if initial LE GAP Tasks are completed 2387 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2388 hci_run_general_gap_le(); 2389 break; 2390 } 2391 #endif 2392 #endif 2393 hci_init_done(); 2394 break; 2395 2396 default: 2397 return; 2398 } 2399 } 2400 2401 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2402 bool command_completed = false; 2403 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2404 uint16_t opcode = little_endian_read_16(packet,3); 2405 if (opcode == hci_stack->last_cmd_opcode){ 2406 command_completed = true; 2407 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2408 } else { 2409 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2410 } 2411 } 2412 2413 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2414 uint8_t status = packet[2]; 2415 uint16_t opcode = little_endian_read_16(packet,4); 2416 if (opcode == hci_stack->last_cmd_opcode){ 2417 if (status){ 2418 command_completed = true; 2419 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2420 } else { 2421 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2422 } 2423 } else { 2424 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2425 } 2426 } 2427 #ifndef HAVE_HOST_CONTROLLER_API 2428 // Vendor == CSR 2429 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2430 // TODO: track actual command 2431 command_completed = true; 2432 } 2433 2434 // Vendor == Toshiba 2435 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2436 // TODO: track actual command 2437 command_completed = true; 2438 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2439 hci_stack->num_cmd_packets = 1; 2440 } 2441 #endif 2442 2443 return command_completed; 2444 } 2445 2446 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2447 2448 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2449 2450 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2451 2452 #ifndef HAVE_HOST_CONTROLLER_API 2453 2454 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2455 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2456 // 2457 // HCI Reset 2458 // Timeout 100 ms 2459 // HCI Reset 2460 // Command Complete Reset 2461 // HCI Read Local Version Information 2462 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2463 // hang... 2464 // 2465 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2466 if (!command_completed 2467 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2468 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2469 2470 uint16_t opcode = little_endian_read_16(packet,3); 2471 if (opcode == hci_reset.opcode){ 2472 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2473 return; 2474 } 2475 } 2476 2477 // CSR & H5 2478 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2479 if (!command_completed 2480 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2481 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2482 2483 uint16_t opcode = little_endian_read_16(packet,3); 2484 if (opcode == hci_reset.opcode){ 2485 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2486 return; 2487 } 2488 } 2489 2490 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2491 // fix: Correct substate and behave as command below 2492 if (command_completed){ 2493 switch (hci_stack->substate){ 2494 case HCI_INIT_SEND_RESET: 2495 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2496 break; 2497 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2498 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2499 break; 2500 default: 2501 break; 2502 } 2503 } 2504 2505 #endif 2506 2507 if (!command_completed) return; 2508 2509 bool need_baud_change = false; 2510 bool need_addr_change = false; 2511 2512 #ifndef HAVE_HOST_CONTROLLER_API 2513 need_baud_change = hci_stack->config 2514 && hci_stack->chipset 2515 && hci_stack->chipset->set_baudrate_command 2516 && hci_stack->hci_transport->set_baudrate 2517 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2518 2519 need_addr_change = hci_stack->custom_bd_addr_set 2520 && hci_stack->chipset 2521 && hci_stack->chipset->set_bd_addr_command; 2522 #endif 2523 2524 switch(hci_stack->substate){ 2525 2526 #ifndef HAVE_HOST_CONTROLLER_API 2527 case HCI_INIT_SEND_RESET: 2528 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2529 // fix: just correct substate and behave as command below 2530 2531 /* fall through */ 2532 #endif 2533 2534 case HCI_INIT_W4_SEND_RESET: 2535 btstack_run_loop_remove_timer(&hci_stack->timeout); 2536 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2537 return; 2538 2539 #ifndef HAVE_HOST_CONTROLLER_API 2540 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2541 // for STLC2500D, baud rate change already happened. 2542 // for others, baud rate gets changed now 2543 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2544 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2545 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2546 hci_stack->hci_transport->set_baudrate(baud_rate); 2547 } 2548 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2549 return; 2550 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2551 btstack_run_loop_remove_timer(&hci_stack->timeout); 2552 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2553 return; 2554 case HCI_INIT_W4_CUSTOM_INIT: 2555 // repeat custom init 2556 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2557 return; 2558 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2559 // repeat custom init 2560 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2561 return; 2562 #endif 2563 2564 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2565 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2566 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2567 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2568 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2569 return; 2570 } 2571 if (need_addr_change){ 2572 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2573 return; 2574 } 2575 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2576 return; 2577 #ifndef HAVE_HOST_CONTROLLER_API 2578 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2579 if (need_baud_change){ 2580 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2581 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2582 hci_stack->hci_transport->set_baudrate(baud_rate); 2583 } 2584 if (need_addr_change){ 2585 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2586 return; 2587 } 2588 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2589 return; 2590 case HCI_INIT_W4_SET_BD_ADDR: 2591 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2592 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2593 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2594 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2595 return; 2596 } 2597 // skipping st warm boot 2598 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2599 return; 2600 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2601 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2602 return; 2603 #endif 2604 2605 case HCI_INIT_DONE: 2606 // set state if we came here by fall through 2607 hci_stack->substate = HCI_INIT_DONE; 2608 return; 2609 2610 default: 2611 break; 2612 } 2613 hci_initializing_next_state(); 2614 } 2615 2616 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2617 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2618 // To prevent accidentally freeing the HCI connection for the ACL connection, 2619 // check if we have been aware of the HCI connection 2620 switch (conn->state){ 2621 case SENT_CREATE_CONNECTION: 2622 case RECEIVED_CONNECTION_REQUEST: 2623 case ACCEPTED_CONNECTION_REQUEST: 2624 break; 2625 default: 2626 return; 2627 } 2628 2629 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2630 bd_addr_t bd_address; 2631 (void)memcpy(&bd_address, conn->address, 6); 2632 2633 #ifdef ENABLE_CLASSIC 2634 // cache needed data 2635 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2636 #endif 2637 2638 // connection failed, remove entry 2639 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2640 btstack_memory_hci_connection_free( conn ); 2641 2642 #ifdef ENABLE_CLASSIC 2643 // notify client if dedicated bonding 2644 if (notify_dedicated_bonding_failed){ 2645 log_info("hci notify_dedicated_bonding_failed"); 2646 hci_emit_dedicated_bonding_result(bd_address, status); 2647 } 2648 2649 // if authentication error, also delete link key 2650 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2651 gap_drop_link_key_for_bd_addr(bd_address); 2652 } 2653 #else 2654 UNUSED(status); 2655 #endif 2656 } 2657 2658 #ifdef ENABLE_CLASSIC 2659 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2660 // SSP Controller 2661 if (features[6] & (1 << 3)){ 2662 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2663 } 2664 // eSCO 2665 if (features[3] & (1<<7)){ 2666 conn->remote_supported_features[0] |= 1; 2667 } 2668 // Extended features 2669 if (features[7] & (1<<7)){ 2670 conn->remote_supported_features[0] |= 2; 2671 } 2672 // SCO packet types 2673 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2674 } 2675 2676 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2677 // SSP Host 2678 if (features[0] & (1 << 0)){ 2679 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2680 } 2681 // SC Host 2682 if (features[0] & (1 << 3)){ 2683 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2684 } 2685 } 2686 2687 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2688 // SC Controller 2689 if (features[1] & (1 << 0)){ 2690 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2691 } 2692 } 2693 2694 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2695 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2696 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2697 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2698 if (conn->bonding_flags & BONDING_DEDICATED){ 2699 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2700 } 2701 } 2702 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2703 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2704 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2705 } 2706 2707 #endif 2708 2709 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2710 // handle BT initialization 2711 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2712 hci_initializing_event_handler(packet, size); 2713 } 2714 2715 // help with BT sleep 2716 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2717 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2718 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2719 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2720 hci_initializing_next_state(); 2721 } 2722 } 2723 2724 #ifdef ENABLE_CLASSIC 2725 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2726 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2727 conn->requested_security_level = LEVEL_0; 2728 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2729 hci_emit_security_level(conn->con_handle, security_level); 2730 2731 // dedicated bonding 2732 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2733 conn->bonding_flags &= ~BONDING_DEDICATED; 2734 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2735 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2736 // emit dedicated bonding complete, don't disconnect 2737 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2738 #else 2739 // request disconnect, event is emitted after disconnect 2740 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2741 #endif 2742 } 2743 } 2744 2745 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2746 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2747 conn->encryption_key_size = encryption_key_size; 2748 2749 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2750 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2751 hci_handle_mutual_authentication_completed(conn); 2752 } else { 2753 // otherwise trigger remote feature request and send authentication request 2754 hci_trigger_remote_features_for_connection(conn); 2755 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2756 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2757 } 2758 } 2759 } 2760 #endif 2761 2762 static void hci_store_local_supported_commands(const uint8_t * packet){ 2763 // create mapping table 2764 #define X(name, offset, bit) { offset, bit }, 2765 static struct { 2766 uint8_t byte_offset; 2767 uint8_t bit_position; 2768 } supported_hci_commands_map [] = { 2769 SUPPORTED_HCI_COMMANDS 2770 }; 2771 #undef X 2772 2773 // create names for debug purposes 2774 #ifdef ENABLE_LOG_DEBUG 2775 #define X(name, offset, bit) #name, 2776 static const char * command_names[] = { 2777 SUPPORTED_HCI_COMMANDS 2778 }; 2779 #undef X 2780 #endif 2781 2782 hci_stack->local_supported_commands = 0; 2783 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2784 uint16_t i; 2785 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2786 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2787 #ifdef ENABLE_LOG_DEBUG 2788 log_debug("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2789 #else 2790 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2791 #endif 2792 hci_stack->local_supported_commands |= (1LU << i); 2793 } 2794 } 2795 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2796 } 2797 2798 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2799 UNUSED(size); 2800 2801 uint8_t status = 0; 2802 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2803 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2804 } 2805 uint16_t manufacturer; 2806 #ifdef ENABLE_CLASSIC 2807 hci_connection_t * conn; 2808 #endif 2809 #if defined(ENABLE_CLASSIC) 2810 hci_con_handle_t handle; 2811 #endif 2812 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2813 le_audio_cig_t * cig; 2814 #endif 2815 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2816 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2817 #endif 2818 2819 // get num cmd packets - limit to 1 to reduce complexity 2820 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2821 2822 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2823 switch (opcode){ 2824 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2825 if (status) break; 2826 // terminate, name 248 chars 2827 packet[6+248] = 0; 2828 log_info("local name: %s", &packet[6]); 2829 break; 2830 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2831 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2832 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2833 uint16_t acl_len = little_endian_read_16(packet, 6); 2834 uint16_t sco_len = packet[8]; 2835 2836 // determine usable ACL/SCO payload size 2837 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2838 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2839 2840 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2841 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2842 2843 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2844 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2845 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2846 } 2847 break; 2848 case HCI_OPCODE_HCI_READ_RSSI: 2849 if (status == ERROR_CODE_SUCCESS){ 2850 uint8_t event[5]; 2851 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2852 event[1] = 3; 2853 (void)memcpy(&event[2], &packet[6], 3); 2854 hci_emit_btstack_event(event, sizeof(event), 1); 2855 } 2856 break; 2857 #ifdef ENABLE_BLE 2858 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2859 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2860 hci_stack->le_iso_packets_total_num = packet[11]; 2861 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2862 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2863 2864 /* fall through */ 2865 2866 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2867 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2868 hci_stack->le_acl_packets_total_num = packet[8]; 2869 // determine usable ACL payload size 2870 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2871 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2872 } 2873 log_info("hci_le_read_buffer_size: acl size %u, acl count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num); 2874 break; 2875 #endif 2876 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2877 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2878 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2879 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2880 log_info("hci_le_read_maximum_data_length: tx octets %u, tx time %u us", hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2881 break; 2882 #endif 2883 #ifdef ENABLE_LE_CENTRAL 2884 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2885 hci_stack->le_whitelist_capacity = packet[6]; 2886 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2887 break; 2888 #endif 2889 #ifdef ENABLE_LE_PERIPHERAL 2890 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2891 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2892 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2893 break; 2894 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2895 if (hci_stack->le_advertising_set_in_current_command != 0) { 2896 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2897 hci_stack->le_advertising_set_in_current_command = 0; 2898 if (advertising_set == NULL) break; 2899 uint8_t adv_status = packet[6]; 2900 uint8_t tx_power = packet[7]; 2901 uint8_t event[] = { HCI_EVENT_META_GAP, 4, GAP_SUBEVENT_ADVERTISING_SET_INSTALLED, hci_stack->le_advertising_set_in_current_command, adv_status, tx_power }; 2902 if (adv_status == 0){ 2903 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2904 } 2905 hci_emit_btstack_event(event, sizeof(event), 1); 2906 } 2907 break; 2908 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2909 if (hci_stack->le_advertising_set_in_current_command != 0) { 2910 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2911 hci_stack->le_advertising_set_in_current_command = 0; 2912 if (advertising_set == NULL) break; 2913 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2914 if (status == 0){ 2915 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2916 } 2917 hci_emit_btstack_event(event, sizeof(event), 1); 2918 } 2919 break; 2920 #endif 2921 #endif 2922 case HCI_OPCODE_HCI_READ_BD_ADDR: 2923 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2924 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2925 #ifdef ENABLE_CLASSIC 2926 if (hci_stack->link_key_db){ 2927 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2928 } 2929 #endif 2930 break; 2931 #ifdef ENABLE_CLASSIC 2932 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2933 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2934 break; 2935 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2936 if (status == ERROR_CODE_SUCCESS) { 2937 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2938 } else { 2939 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2940 } 2941 break; 2942 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2943 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2944 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2945 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2946 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2947 hci_emit_btstack_event(event, sizeof(event), 1); 2948 } 2949 break; 2950 #endif 2951 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2952 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2953 2954 #ifdef ENABLE_CLASSIC 2955 // determine usable ACL packet types based on host buffer size and supported features 2956 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2957 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2958 // determine usable SCO packet types based on supported features 2959 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2960 &hci_stack->local_supported_features[0]); 2961 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2962 #endif 2963 // Classic/LE 2964 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2965 break; 2966 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2967 manufacturer = little_endian_read_16(packet, 10); 2968 // map Cypress & Infineon to Broadcom 2969 switch (manufacturer){ 2970 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2971 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2972 log_info("Treat Cypress/Infineon as Broadcom"); 2973 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2974 little_endian_store_16(packet, 10, manufacturer); 2975 break; 2976 default: 2977 break; 2978 } 2979 hci_stack->manufacturer = manufacturer; 2980 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2981 break; 2982 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2983 hci_store_local_supported_commands(packet); 2984 break; 2985 #ifdef ENABLE_CLASSIC 2986 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2987 if (status) return; 2988 hci_stack->synchronous_flow_control_enabled = 1; 2989 break; 2990 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2991 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2992 conn = hci_connection_for_handle(handle); 2993 if (conn != NULL) { 2994 uint8_t key_size = 0; 2995 if (status == 0){ 2996 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2997 log_info("Handle %04x key Size: %u", handle, key_size); 2998 } else { 2999 key_size = 1; 3000 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3001 } 3002 hci_handle_read_encryption_key_size_complete(conn, key_size); 3003 } 3004 break; 3005 // assert pairing complete event is emitted. 3006 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3007 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3008 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3009 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3010 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3011 // lookup connection by gap pairing addr 3012 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3013 if (conn == NULL) break; 3014 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3015 break; 3016 3017 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3018 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3019 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3020 uint8_t event[67]; 3021 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3022 event[1] = 65; 3023 (void)memset(&event[2], 0, 65); 3024 if (status == ERROR_CODE_SUCCESS){ 3025 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3026 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3027 event[2] = 3; 3028 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3029 } else { 3030 event[2] = 1; 3031 } 3032 } 3033 hci_emit_btstack_event(event, sizeof(event), 0); 3034 break; 3035 } 3036 3037 // note: only needed if user does not provide OOB data 3038 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3039 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3040 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3041 if (conn == NULL) break; 3042 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3043 break; 3044 #endif 3045 #endif 3046 #ifdef ENABLE_BLE 3047 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3048 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3049 // lookup CIG 3050 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3051 if (cig != NULL){ 3052 uint8_t i = 0; 3053 if (status == ERROR_CODE_SUCCESS){ 3054 // assign CIS handles to pre-allocated CIS 3055 btstack_linked_list_iterator_t it; 3056 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3057 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3058 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3059 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3060 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3061 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3062 iso_stream->cis_handle = cis_handle; 3063 cig->cis_con_handles[i] = cis_handle; 3064 i++; 3065 } 3066 } 3067 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3068 hci_emit_cig_created(cig, status); 3069 } else { 3070 hci_emit_cig_created(cig, status); 3071 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3072 } 3073 } 3074 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3075 break; 3076 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3077 if (status != ERROR_CODE_SUCCESS){ 3078 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3079 } 3080 break; 3081 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3082 if (status != ERROR_CODE_SUCCESS){ 3083 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3084 } 3085 break; 3086 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3087 // lookup BIG by state 3088 btstack_linked_list_iterator_t it; 3089 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3090 while (btstack_linked_list_iterator_has_next(&it)) { 3091 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3092 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3093 if (status == ERROR_CODE_SUCCESS){ 3094 big->state_vars.next_bis++; 3095 if (big->state_vars.next_bis == big->num_bis){ 3096 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3097 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3098 } else { 3099 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3100 } 3101 } else { 3102 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3103 big->state_vars.status = status; 3104 } 3105 return; 3106 } 3107 } 3108 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3109 while (btstack_linked_list_iterator_has_next(&it)) { 3110 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3111 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3112 if (status == ERROR_CODE_SUCCESS){ 3113 big_sync->state_vars.next_bis++; 3114 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3115 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3116 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3117 } else { 3118 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3119 } 3120 } else { 3121 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3122 big_sync->state_vars.status = status; 3123 } 3124 return; 3125 } 3126 } 3127 // Lookup CIS via active group operation 3128 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3129 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3130 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3131 3132 // lookup CIS by state 3133 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3134 while (btstack_linked_list_iterator_has_next(&it)){ 3135 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3136 bool emit_cis_created = false; 3137 switch (iso_stream->state){ 3138 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3139 if (status != ERROR_CODE_SUCCESS){ 3140 emit_cis_created = true; 3141 break; 3142 } 3143 if (iso_stream->max_sdu_c_to_p > 0){ 3144 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3145 } else { 3146 emit_cis_created = true; 3147 } 3148 break; 3149 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3150 emit_cis_created = true; 3151 break; 3152 default: 3153 break; 3154 } 3155 if (emit_cis_created){ 3156 hci_cis_handle_created(iso_stream, status); 3157 } 3158 } 3159 } else { 3160 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3161 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3162 if (cig != NULL) { 3163 // emit cis created if all ISO Paths have been created 3164 // assume we are central 3165 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3166 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3167 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3168 // if outgoing has been setup, or incoming was setup but outgoing not required 3169 if ((cis_direction == 1) || (outgoing_needed == false)){ 3170 // lookup iso stream by cig/cis 3171 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3172 while (btstack_linked_list_iterator_has_next(&it)) { 3173 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3174 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3175 hci_cis_handle_created(iso_stream, status); 3176 } 3177 } 3178 } 3179 // next state 3180 cig->state_vars.next_cis++; 3181 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3182 } 3183 } 3184 } 3185 break; 3186 } 3187 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3188 // lookup BIG by state 3189 btstack_linked_list_iterator_t it; 3190 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3191 while (btstack_linked_list_iterator_has_next(&it)) { 3192 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3193 uint8_t big_handle = big_sync->big_handle; 3194 switch (big_sync->state){ 3195 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3196 btstack_linked_list_iterator_remove(&it); 3197 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3198 return; 3199 default: 3200 btstack_linked_list_iterator_remove(&it); 3201 hci_emit_big_sync_stopped(big_handle); 3202 return; 3203 } 3204 } 3205 break; 3206 } 3207 #endif 3208 #endif 3209 default: 3210 break; 3211 } 3212 } 3213 3214 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3215 static void 3216 hci_iso_create_big_failed(const le_audio_big_t *big, uint8_t status) { 3217 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 3218 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3219 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3220 hci_emit_big_created(big, status); 3221 } else { 3222 hci_emit_big_terminated(big); 3223 } 3224 } 3225 3226 static void hci_iso_big_sync_failed(const le_audio_big_sync_t *big_sync, uint8_t status) { 3227 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3228 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3229 hci_emit_big_sync_created(big_sync, status); 3230 } else { 3231 hci_emit_big_sync_stopped(big_sync->big_handle); 3232 } 3233 } 3234 #endif 3235 3236 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3237 UNUSED(size); 3238 3239 // get num cmd packets - limit to 1 to reduce complexity 3240 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3241 3242 // get opcode and command status 3243 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3244 3245 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3246 uint8_t status = hci_event_command_status_get_status(packet); 3247 #endif 3248 3249 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3250 bd_addr_type_t addr_type; 3251 bd_addr_t addr; 3252 #endif 3253 3254 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3255 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3256 #endif 3257 3258 switch (opcode){ 3259 #ifdef ENABLE_CLASSIC 3260 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3261 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3262 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3263 #endif 3264 #ifdef ENABLE_LE_CENTRAL 3265 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3266 #endif 3267 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3268 addr_type = hci_stack->outgoing_addr_type; 3269 memcpy(addr, hci_stack->outgoing_addr, 6); 3270 3271 // reset outgoing address info 3272 memset(hci_stack->outgoing_addr, 0, 6); 3273 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3274 3275 // on error 3276 if (status != ERROR_CODE_SUCCESS){ 3277 #ifdef ENABLE_LE_CENTRAL 3278 if (hci_is_le_connection_type(addr_type)){ 3279 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3280 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3281 } 3282 #endif 3283 // error => outgoing connection failed 3284 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3285 if (conn != NULL){ 3286 hci_handle_connection_failed(conn, status); 3287 } 3288 } 3289 break; 3290 #endif 3291 #ifdef ENABLE_CLASSIC 3292 case HCI_OPCODE_HCI_INQUIRY: 3293 if (status == ERROR_CODE_SUCCESS) { 3294 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3295 } else { 3296 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3297 } 3298 break; 3299 #endif 3300 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3301 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3302 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3303 if (status == ERROR_CODE_SUCCESS){ 3304 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3305 } else { 3306 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3307 } 3308 break; 3309 case HCI_OPCODE_HCI_LE_CREATE_BIG: 3310 if (status != ERROR_CODE_SUCCESS){ 3311 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3312 // get current big 3313 le_audio_big_t * big = hci_big_for_handle(hci_stack->iso_active_operation_group_id); 3314 if (big != NULL){ 3315 hci_iso_create_big_failed(big, status); 3316 } 3317 } 3318 break; 3319 case HCI_OPCODE_HCI_LE_BIG_CREATE_SYNC: 3320 if (status != ERROR_CODE_SUCCESS){ 3321 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3322 // get current big sync 3323 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(hci_stack->iso_active_operation_group_id); 3324 if (big_sync != NULL){ 3325 hci_iso_big_sync_failed(big_sync, status); 3326 } 3327 } 3328 break; 3329 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3330 default: 3331 break; 3332 } 3333 } 3334 3335 #ifdef ENABLE_BLE 3336 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3337 gap_event[0] = HCI_EVENT_META_GAP; 3338 gap_event[1] = 36 - 2; 3339 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3340 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3341 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3342 memcpy(&gap_event[3], &hci_event[3], 11); 3343 memset(&gap_event[14], 0, 12); 3344 memcpy(&gap_event[26], &hci_event[14], 7); 3345 memset(&gap_event[33], 0xff, 3); 3346 // Some Controllers incorrectly report a resolved identity address in HCI_SUBEVENT_LE_CONNECTION_COMPLETE. 3347 // If an address is resolved, we're working with it, but this event does not provide it. 3348 // As a workaround, we map identity addresses to regular addresses. 3349 gap_event[7] = gap_event[7] & 1; 3350 break; 3351 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3352 memcpy(&gap_event[3], &hci_event[3], 30); 3353 memset(&gap_event[33], 0xff, 3); 3354 break; 3355 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3356 memcpy(&gap_event[3], &hci_event[3], 33); 3357 break; 3358 default: 3359 btstack_unreachable(); 3360 break; 3361 } 3362 } 3363 3364 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3365 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3366 uint8_t gap_event[36]; 3367 hci_create_gap_connection_complete_event(hci_event, gap_event); 3368 3369 // read fields 3370 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3371 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3372 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3373 3374 // Connection management 3375 bd_addr_t addr; 3376 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3377 bd_addr_type_t addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3378 hci_con_handle_t con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3379 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3380 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3381 3382 #ifdef ENABLE_LE_CENTRAL 3383 // handle error: error is reported only to the initiator -> outgoing connection 3384 if (status){ 3385 3386 // handle cancelled outgoing connection 3387 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3388 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3389 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3390 bool connection_was_cancelled = false; 3391 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3392 connection_was_cancelled = true; 3393 // reset state 3394 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3395 // get outgoing connection conn struct for direct connect 3396 conn = gap_get_outgoing_le_connection(); 3397 // prepare restart if still active 3398 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3399 conn->state = SEND_CREATE_CONNECTION; 3400 } 3401 } 3402 3403 // free connection if cancelled by user (request == IDLE) 3404 bool cancelled_by_user = hci_stack->le_connecting_request == LE_CONNECTING_IDLE; 3405 if ((conn != NULL) && cancelled_by_user){ 3406 // remove entry 3407 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3408 btstack_memory_hci_connection_free( conn ); 3409 } 3410 3411 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for: 3412 // - outgoing error not caused by connection cancel 3413 // - connection cancelled by user 3414 // by this, no event is emitted for intermediate connection cancel required filterlist modification 3415 if ((connection_was_cancelled == false) || cancelled_by_user){ 3416 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3417 } 3418 return; 3419 } 3420 #endif 3421 3422 // on success, both hosts receive connection complete event 3423 if (role == HCI_ROLE_MASTER){ 3424 #ifdef ENABLE_LE_CENTRAL 3425 // if we're master, it was an outgoing connection 3426 // note: no hci_connection_t object exists yet for connect with whitelist 3427 3428 // if an identity addresses was used without enhanced connection complete event, 3429 // the connection complete event contains the current random address of the peer device. 3430 // This random address is needed in the case of a re-pairing 3431 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3432 conn = gap_get_outgoing_le_connection(); 3433 // if outgoing connection object is available, check if identity address was used. 3434 // if yes, track resolved random address and provide rpa 3435 // note: we don't update hci le subevent connection complete 3436 if (conn != NULL){ 3437 if (hci_is_le_identity_address_type(conn->address_type)){ 3438 memcpy(&gap_event[20], &gap_event[8], 6); 3439 gap_event[7] = conn->address_type; 3440 reverse_bd_addr(conn->address, &gap_event[8]); 3441 } 3442 } 3443 } 3444 3445 // we're done with it 3446 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3447 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3448 #endif 3449 } else { 3450 #ifdef ENABLE_LE_PERIPHERAL 3451 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3452 if (hci_le_extended_advertising_supported()) { 3453 // advertisement state managed with HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED 3454 3455 // if advertisement set terminated event arrives before connection complete, connection struct has been prepared 3456 // set missing peer address + address type 3457 conn = hci_connection_for_handle(con_handle); 3458 if (conn != NULL){ 3459 memcpy(conn->address, addr, 6); 3460 conn->address_type = addr_type; 3461 } 3462 } 3463 else 3464 #endif 3465 { 3466 // if we're slave, it was an incoming connection and advertisements have stopped 3467 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3468 } 3469 #endif 3470 } 3471 3472 // LE connections are auto-accepted, so just create a connection if there isn't one already 3473 if (!conn){ 3474 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3475 } 3476 3477 // no memory, sorry. 3478 if (!conn){ 3479 return; 3480 } 3481 3482 conn->state = OPEN; 3483 conn->con_handle = con_handle; 3484 conn->le_connection_interval = conn_interval; 3485 3486 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3487 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3488 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3489 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3490 } 3491 #endif 3492 3493 #ifdef ENABLE_LE_PERIPHERAL 3494 if (role == HCI_ROLE_SLAVE){ 3495 hci_update_advertisements_enabled_for_current_roles(); 3496 } 3497 #endif 3498 3499 // init unenhanced att bearer mtu 3500 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3501 conn->att_connection.mtu_exchanged = false; 3502 3503 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3504 3505 // restart timer 3506 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3507 // btstack_run_loop_add_timer(&conn->timeout); 3508 3509 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3510 3511 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3512 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3513 3514 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3515 hci_emit_nr_connections_changed(); 3516 } 3517 #endif 3518 3519 #ifdef ENABLE_CLASSIC 3520 static bool hci_ssp_security_level_possible_for_io_cap(gap_security_level_t level, uint8_t io_cap_local, uint8_t io_cap_remote){ 3521 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3522 // LEVEL_4 is tested by l2cap 3523 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3524 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3525 if (level >= LEVEL_3){ 3526 // MITM not possible without keyboard or display 3527 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3528 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3529 3530 // MITM possible if one side has keyboard and the other has keyboard or display 3531 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3532 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3533 3534 // MITM not possible if one side has only display and other side has no keyboard 3535 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3536 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3537 } 3538 // LEVEL 2 requires SSP, which is a given 3539 return true; 3540 } 3541 3542 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3543 // get requested security level 3544 gap_security_level_t requested_security_level = conn->requested_security_level; 3545 if (hci_stack->gap_secure_connections_only_mode){ 3546 requested_security_level = LEVEL_4; 3547 } 3548 3549 // assess security: LEVEL 4 requires SC 3550 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3551 if ((requested_security_level == LEVEL_4) && 3552 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3553 !hci_remote_sc_enabled(conn)){ 3554 log_info("Level 4 required, but SC not supported -> abort"); 3555 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3556 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3557 return; 3558 } 3559 3560 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3561 // - GAP/MOD/NBON/BV-02-C 3562 // - GAP/DM/NBON/BV-01-C 3563 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3564 switch (conn->io_cap_response_auth_req){ 3565 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3566 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3567 if (hci_stack->bondable == false){ 3568 log_info("Dedicated vs. non-bondable -> abort"); 3569 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3570 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3571 return; 3572 } 3573 default: 3574 break; 3575 } 3576 } 3577 3578 // assess security based on io capabilities 3579 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3580 // responder: fully validate io caps of both sides as well as OOB data 3581 bool security_possible = false; 3582 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3583 3584 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3585 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3586 // so we merge the OOB data availability 3587 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3588 if (conn->classic_oob_c_192 != NULL){ 3589 have_oob_data |= 1; 3590 } 3591 if (conn->classic_oob_c_256 != NULL){ 3592 have_oob_data |= 2; 3593 } 3594 // for up to Level 3, either P-192 as well as P-256 will do 3595 // if we don't support SC, then a) conn->classic_oob_c_256 will be NULL and b) remote should not report P-256 available 3596 // if remote does not SC, we should not receive P-256 data either 3597 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3598 security_possible = true; 3599 } 3600 // for Level 4, P-256 is needed 3601 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3602 security_possible = true; 3603 } 3604 #endif 3605 3606 if (security_possible == false){ 3607 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3608 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3609 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3610 return; 3611 } 3612 } else { 3613 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3614 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3615 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3616 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3617 log_info("Level 3+ required, but no input/output -> abort"); 3618 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3619 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3620 return; 3621 } 3622 #endif 3623 #endif 3624 } 3625 3626 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3627 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3628 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3629 } else { 3630 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3631 } 3632 #endif 3633 } 3634 3635 #endif 3636 3637 static void event_handler(uint8_t *packet, uint16_t size){ 3638 3639 uint16_t event_length = packet[1]; 3640 3641 // assert packet is complete 3642 if (size != (event_length + 2u)){ 3643 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3644 return; 3645 } 3646 3647 hci_con_handle_t handle; 3648 hci_connection_t * conn; 3649 int i; 3650 3651 #ifdef ENABLE_CLASSIC 3652 hci_link_type_t link_type; 3653 bd_addr_t addr; 3654 bd_addr_type_t addr_type; 3655 #endif 3656 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3657 hci_iso_stream_t * iso_stream; 3658 le_audio_big_t * big; 3659 le_audio_big_sync_t * big_sync; 3660 #endif 3661 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3662 btstack_linked_list_iterator_t it; 3663 #endif 3664 #if defined(ENABLE_LE_EXTENDED_ADVERTISING) && defined(ENABLE_LE_CENTRAL) 3665 uint8_t advertising_handle; 3666 #endif 3667 3668 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3669 3670 switch (hci_event_packet_get_type(packet)) { 3671 3672 case HCI_EVENT_COMMAND_COMPLETE: 3673 handle_command_complete_event(packet, size); 3674 break; 3675 3676 case HCI_EVENT_COMMAND_STATUS: 3677 handle_command_status_event(packet, size); 3678 break; 3679 3680 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3681 if (size < 3) return; 3682 uint16_t num_handles = packet[2]; 3683 if (size != (3u + num_handles * 4u)) return; 3684 #ifdef ENABLE_CLASSIC 3685 bool notify_sco = false; 3686 #endif 3687 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3688 bool notify_iso = false; 3689 #endif 3690 uint16_t offset = 3; 3691 for (i=0; i<num_handles;i++){ 3692 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3693 offset += 2u; 3694 uint16_t num_packets = little_endian_read_16(packet, offset); 3695 offset += 2u; 3696 3697 conn = hci_connection_for_handle(handle); 3698 if (conn != NULL) { 3699 3700 if (conn->num_packets_sent >= num_packets) { 3701 conn->num_packets_sent -= num_packets; 3702 } else { 3703 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3704 conn->num_packets_sent = 0; 3705 } 3706 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3707 #ifdef ENABLE_CLASSIC 3708 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3709 notify_sco = true; 3710 } 3711 #endif 3712 } 3713 3714 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3715 hci_controller_dump_packets(); 3716 #endif 3717 3718 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3719 if (conn == NULL){ 3720 iso_stream = hci_iso_stream_for_con_handle(handle); 3721 if (iso_stream != NULL){ 3722 if (iso_stream->num_packets_sent >= num_packets) { 3723 iso_stream->num_packets_sent -= num_packets; 3724 } else { 3725 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3726 iso_stream->num_packets_sent = 0; 3727 } 3728 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3729 big = hci_big_for_handle(iso_stream->group_id); 3730 if (big != NULL){ 3731 big->num_completed_timestamp_current_valid = true; 3732 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3733 } 3734 } 3735 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3736 num_packets, handle, iso_stream->num_packets_sent); 3737 notify_iso = true; 3738 } 3739 } 3740 #endif 3741 } 3742 3743 #ifdef ENABLE_CLASSIC 3744 if (notify_sco){ 3745 hci_notify_if_sco_can_send_now(); 3746 } 3747 #endif 3748 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3749 if (notify_iso){ 3750 hci_iso_notify_can_send_now(); 3751 } 3752 #endif 3753 break; 3754 } 3755 3756 #ifdef ENABLE_CLASSIC 3757 case HCI_EVENT_FLUSH_OCCURRED: 3758 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3759 handle = hci_event_flush_occurred_get_handle(packet); 3760 conn = hci_connection_for_handle(handle); 3761 if (conn) { 3762 log_info("Flush occurred, disconnect 0x%04x", handle); 3763 conn->state = SEND_DISCONNECT; 3764 } 3765 break; 3766 3767 case HCI_EVENT_INQUIRY_COMPLETE: 3768 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3769 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3770 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3771 hci_emit_btstack_event(event, sizeof(event), 1); 3772 } 3773 break; 3774 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3775 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3776 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3777 } 3778 break; 3779 case HCI_EVENT_CONNECTION_REQUEST: 3780 reverse_bd_addr(&packet[2], addr); 3781 link_type = (hci_link_type_t) packet[11]; 3782 3783 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3784 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3785 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3786 bd_addr_copy(hci_stack->decline_addr, addr); 3787 break; 3788 } 3789 3790 if (hci_stack->gap_classic_accept_callback != NULL){ 3791 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3792 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3793 bd_addr_copy(hci_stack->decline_addr, addr); 3794 break; 3795 } 3796 } 3797 3798 // TODO: eval COD 8-10 3799 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3800 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3801 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3802 if (!conn) { 3803 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3804 } 3805 if (!conn) { 3806 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3807 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3808 bd_addr_copy(hci_stack->decline_addr, addr); 3809 hci_run(); 3810 // avoid event to higher layer 3811 return; 3812 } 3813 conn->state = RECEIVED_CONNECTION_REQUEST; 3814 // store info about eSCO 3815 if (link_type == HCI_LINK_TYPE_ESCO){ 3816 conn->remote_supported_features[0] |= 1; 3817 } 3818 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3819 if (addr_type == BD_ADDR_TYPE_SCO){ 3820 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3821 // ACL exists unless fuzzing 3822 if (acl_conn != NULL) { 3823 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3824 } 3825 } 3826 hci_run(); 3827 break; 3828 3829 case HCI_EVENT_CONNECTION_COMPLETE: 3830 // Connection management 3831 reverse_bd_addr(&packet[5], addr); 3832 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3833 addr_type = BD_ADDR_TYPE_ACL; 3834 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3835 if (conn) { 3836 switch (conn->state){ 3837 // expected states 3838 case ACCEPTED_CONNECTION_REQUEST: 3839 case SENT_CREATE_CONNECTION: 3840 break; 3841 // unexpected state -> ignore 3842 default: 3843 // don't forward event to app 3844 return; 3845 } 3846 if (!packet[2]){ 3847 conn->state = OPEN; 3848 conn->con_handle = little_endian_read_16(packet, 3); 3849 3850 // trigger write supervision timeout if we're master 3851 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3852 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3853 } 3854 3855 // trigger write automatic flush timeout 3856 if (hci_stack->automatic_flush_timeout != 0){ 3857 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3858 } 3859 3860 // restart timer 3861 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3862 btstack_run_loop_add_timer(&conn->timeout); 3863 3864 // trigger remote features for dedicated bonding 3865 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3866 hci_trigger_remote_features_for_connection(conn); 3867 } 3868 3869 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3870 3871 hci_emit_nr_connections_changed(); 3872 } else { 3873 // connection failed 3874 hci_handle_connection_failed(conn, packet[2]); 3875 } 3876 } 3877 break; 3878 3879 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3880 reverse_bd_addr(&packet[5], addr); 3881 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3882 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3883 3884 // SCO exists unless fuzzer 3885 if (conn == NULL) break; 3886 3887 if (packet[2] != ERROR_CODE_SUCCESS){ 3888 // connection failed, remove entry 3889 hci_handle_connection_failed(conn, packet[2]); 3890 break; 3891 } 3892 3893 conn->state = OPEN; 3894 conn->con_handle = little_endian_read_16(packet, 3); 3895 3896 // update sco payload length for eSCO connections 3897 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3898 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3899 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3900 } 3901 3902 #ifdef ENABLE_SCO_OVER_HCI 3903 // update SCO 3904 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3905 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3906 } 3907 // trigger can send now 3908 if (hci_have_usb_transport()){ 3909 hci_stack->sco_can_send_now = true; 3910 } 3911 3912 // setup implicit sco flow control 3913 conn->sco_tx_ready = 0; 3914 conn->sco_tx_active = 0; 3915 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3916 3917 #endif 3918 #ifdef HAVE_SCO_TRANSPORT 3919 // configure sco transport 3920 if (hci_stack->sco_transport != NULL){ 3921 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3922 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3923 } 3924 #endif 3925 break; 3926 3927 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3928 handle = little_endian_read_16(packet, 3); 3929 conn = hci_connection_for_handle(handle); 3930 if (!conn) break; 3931 if (!packet[2]){ 3932 const uint8_t * features = &packet[5]; 3933 hci_handle_remote_features_page_0(conn, features); 3934 3935 // read extended features if possible 3936 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3937 && ((conn->remote_supported_features[0] & 2) != 0)) { 3938 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3939 break; 3940 } 3941 } 3942 hci_handle_remote_features_received(conn); 3943 break; 3944 3945 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3946 handle = little_endian_read_16(packet, 3); 3947 conn = hci_connection_for_handle(handle); 3948 if (!conn) break; 3949 // status = ok, page = 1 3950 if (!packet[2]) { 3951 uint8_t page_number = packet[5]; 3952 uint8_t maximum_page_number = packet[6]; 3953 const uint8_t * features = &packet[7]; 3954 bool done = false; 3955 switch (page_number){ 3956 case 1: 3957 hci_handle_remote_features_page_1(conn, features); 3958 if (maximum_page_number >= 2){ 3959 // get Secure Connections (Controller) from Page 2 if available 3960 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3961 } else { 3962 // otherwise, assume SC (Controller) == SC (Host) 3963 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3964 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3965 } 3966 done = true; 3967 } 3968 break; 3969 case 2: 3970 hci_handle_remote_features_page_2(conn, features); 3971 done = true; 3972 break; 3973 default: 3974 break; 3975 } 3976 if (!done) break; 3977 } 3978 hci_handle_remote_features_received(conn); 3979 break; 3980 3981 case HCI_EVENT_LINK_KEY_REQUEST: 3982 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3983 hci_event_link_key_request_get_bd_addr(packet, addr); 3984 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3985 if (!conn) break; 3986 3987 // lookup link key in db if not cached 3988 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3989 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3990 } 3991 3992 // response sent by hci_run() 3993 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3994 #endif 3995 break; 3996 3997 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3998 hci_event_link_key_request_get_bd_addr(packet, addr); 3999 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4000 if (!conn) break; 4001 4002 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 4003 4004 // CVE-2020-26555: ignore NULL link key 4005 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 4006 if (btstack_is_null(&packet[8], 16)) break; 4007 4008 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 4009 // Change Connection Encryption keeps link key type 4010 if (link_key_type != CHANGED_COMBINATION_KEY){ 4011 conn->link_key_type = link_key_type; 4012 } 4013 4014 // cache link key. link keys stored in little-endian format for legacy reasons 4015 memcpy(&conn->link_key, &packet[8], 16); 4016 4017 // only store link key: 4018 // - if bondable enabled 4019 if (hci_stack->bondable == false) break; 4020 // - if security level sufficient 4021 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 4022 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 4023 break; 4024 } 4025 4026 case HCI_EVENT_PIN_CODE_REQUEST: 4027 hci_event_pin_code_request_get_bd_addr(packet, addr); 4028 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4029 if (!conn) break; 4030 4031 hci_pairing_started(conn, false); 4032 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 4033 if (!hci_stack->bondable ){ 4034 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4035 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 4036 hci_run(); 4037 return; 4038 } 4039 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 4040 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 4041 log_info("Level 4 required, but SC not supported -> abort"); 4042 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4043 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4044 hci_run(); 4045 return; 4046 } 4047 break; 4048 4049 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 4050 hci_event_io_capability_response_get_bd_addr(packet, addr); 4051 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4052 if (!conn) break; 4053 4054 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 4055 hci_pairing_started(conn, true); 4056 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 4057 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 4058 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4059 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 4060 #endif 4061 break; 4062 4063 case HCI_EVENT_IO_CAPABILITY_REQUEST: 4064 hci_event_io_capability_response_get_bd_addr(packet, addr); 4065 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4066 if (!conn) break; 4067 4068 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4069 hci_connection_timestamp(conn); 4070 hci_pairing_started(conn, true); 4071 break; 4072 4073 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4074 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4075 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4076 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4077 if (!conn) break; 4078 4079 hci_connection_timestamp(conn); 4080 4081 hci_pairing_started(conn, true); 4082 4083 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4084 break; 4085 #endif 4086 4087 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4088 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4089 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4090 if (!conn) break; 4091 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4092 if (hci_stack->ssp_auto_accept){ 4093 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4094 }; 4095 } else { 4096 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4097 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4098 // don't forward event to app 4099 hci_run(); 4100 return; 4101 } 4102 break; 4103 4104 case HCI_EVENT_USER_PASSKEY_REQUEST: 4105 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4106 if (hci_stack->ssp_auto_accept){ 4107 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4108 }; 4109 break; 4110 4111 case HCI_EVENT_MODE_CHANGE: 4112 handle = hci_event_mode_change_get_handle(packet); 4113 conn = hci_connection_for_handle(handle); 4114 if (!conn) break; 4115 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4116 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4117 break; 4118 #endif 4119 4120 case HCI_EVENT_ENCRYPTION_CHANGE: 4121 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4122 handle = hci_event_encryption_change_get_connection_handle(packet); 4123 conn = hci_connection_for_handle(handle); 4124 if (!conn) break; 4125 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4126 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4127 if (encryption_enabled){ 4128 if (hci_is_le_connection(conn)){ 4129 // For LE, we accept connection as encrypted 4130 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4131 } 4132 #ifdef ENABLE_CLASSIC 4133 else { 4134 4135 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4136 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4137 bool connected_uses_aes_ccm = encryption_enabled == 2; 4138 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4139 #ifdef ENABLE_TESTING_SUPPORT 4140 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4141 // - GAP/SEC/SEM/BI-31-C 4142 // - GAP/SEC/SEM/BI-32-C 4143 // - GAP/SEC/SEM/BI-33-C 4144 4145 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4146 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4147 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4148 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4149 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4150 } 4151 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4152 conn->link_key_type, new_link_key_type); 4153 conn->link_key_type = new_link_key_type; 4154 #else 4155 log_info("SC during pairing, but only E0 now -> abort"); 4156 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4157 break; 4158 #endif 4159 } 4160 4161 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4162 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4163 if (connected_uses_aes_ccm){ 4164 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4165 } 4166 #else 4167 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4168 // with encryption key size > hci_stack->gap_required_encryption_key_size 4169 // for all operations that require any security. See BIAS attacks. 4170 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4171 #endif 4172 // validate encryption key size 4173 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4174 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4175 // already got encryption key size 4176 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4177 } else { 4178 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4179 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4180 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4181 } else { 4182 // if not, pretend everything is perfect 4183 hci_handle_read_encryption_key_size_complete(conn, 16); 4184 } 4185 } 4186 } 4187 #endif 4188 } else { 4189 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4190 } 4191 } else { 4192 #ifdef ENABLE_CLASSIC 4193 if (!hci_is_le_connection(conn)){ 4194 uint8_t status = hci_event_encryption_change_get_status(packet); 4195 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4196 conn->bonding_flags &= ~BONDING_DEDICATED; 4197 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4198 conn->bonding_status = status; 4199 } 4200 // trigger security update -> level 0 4201 hci_handle_mutual_authentication_completed(conn); 4202 } 4203 #endif 4204 } 4205 4206 break; 4207 4208 #ifdef ENABLE_CLASSIC 4209 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4210 handle = hci_event_authentication_complete_get_connection_handle(packet); 4211 conn = hci_connection_for_handle(handle); 4212 if (!conn) break; 4213 4214 // clear authentication active flag 4215 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4216 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4217 4218 // authenticated only if auth status == 0 4219 if (hci_event_authentication_complete_get_status(packet) == 0){ 4220 // authenticated 4221 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4222 4223 // If not already encrypted, start encryption 4224 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4225 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4226 break; 4227 } 4228 } 4229 4230 // emit updated security level (will be 0 if not authenticated) 4231 hci_handle_mutual_authentication_completed(conn); 4232 break; 4233 4234 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4235 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4236 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4237 if (!conn) break; 4238 4239 // treat successfully paired connection as authenticated 4240 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4241 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4242 } 4243 4244 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4245 break; 4246 #endif 4247 4248 // HCI_EVENT_DISCONNECTION_COMPLETE 4249 // has been split, to first notify stack before shutting connection down 4250 // see end of function, too. 4251 case HCI_EVENT_DISCONNECTION_COMPLETE: 4252 if (packet[2]) break; // status != 0 4253 handle = little_endian_read_16(packet, 3); 4254 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4255 if (hci_stack->acl_fragmentation_total_size > 0u) { 4256 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4257 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4258 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4259 hci_stack->acl_fragmentation_total_size = 0; 4260 hci_stack->acl_fragmentation_pos = 0; 4261 if (release_buffer){ 4262 hci_release_packet_buffer(); 4263 } 4264 } 4265 } 4266 4267 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4268 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4269 if (hci_stack->iso_fragmentation_total_size > 0u) { 4270 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4271 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4272 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4273 hci_stack->iso_fragmentation_total_size = 0; 4274 hci_stack->iso_fragmentation_pos = 0; 4275 if (release_buffer){ 4276 hci_release_packet_buffer(); 4277 } 4278 } 4279 } 4280 4281 // finalize iso stream for CIS handle 4282 iso_stream = hci_iso_stream_for_con_handle(handle); 4283 if (iso_stream != NULL){ 4284 hci_iso_stream_finalize(iso_stream); 4285 break; 4286 } 4287 #endif 4288 4289 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4290 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4291 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4292 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4293 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4294 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4295 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4296 hci_stack->num_cmd_packets = 1; 4297 } 4298 #endif 4299 4300 conn = hci_connection_for_handle(handle); 4301 if (!conn) break; 4302 #ifdef ENABLE_CLASSIC 4303 // pairing failed if it was ongoing 4304 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4305 #endif 4306 4307 // emit dedicated bonding event 4308 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4309 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4310 } 4311 4312 // mark connection for shutdown, stop timers, reset state 4313 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4314 hci_connection_stop_timer(conn); 4315 hci_connection_init(conn); 4316 4317 #ifdef ENABLE_BLE 4318 #ifdef ENABLE_LE_PERIPHERAL 4319 // re-enable advertisements for le connections if active 4320 if (hci_is_le_connection(conn)){ 4321 hci_update_advertisements_enabled_for_current_roles(); 4322 } 4323 #endif 4324 #endif 4325 break; 4326 4327 case HCI_EVENT_HARDWARE_ERROR: 4328 log_error("Hardware Error: 0x%02x", packet[2]); 4329 if (hci_stack->hardware_error_callback){ 4330 (*hci_stack->hardware_error_callback)(packet[2]); 4331 } else { 4332 // if no special requests, just reboot stack 4333 hci_power_control_off(); 4334 hci_power_control_on(); 4335 } 4336 break; 4337 4338 #ifdef ENABLE_CLASSIC 4339 case HCI_EVENT_ROLE_CHANGE: 4340 if (packet[2]) break; // status != 0 4341 reverse_bd_addr(&packet[3], addr); 4342 addr_type = BD_ADDR_TYPE_ACL; 4343 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4344 if (!conn) break; 4345 conn->role = (hci_role_t) packet[9]; 4346 break; 4347 #endif 4348 4349 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4350 // release packet buffer only for asynchronous transport and if there are not further fragments 4351 if (hci_transport_synchronous()) { 4352 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4353 return; // instead of break: to avoid re-entering hci_run() 4354 } 4355 hci_stack->acl_fragmentation_tx_active = 0; 4356 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4357 hci_stack->iso_fragmentation_tx_active = 0; 4358 if (hci_stack->iso_fragmentation_total_size) break; 4359 #endif 4360 if (hci_stack->acl_fragmentation_total_size) break; 4361 4362 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4363 hci_stack->hci_packet_buffer_reserved = false; 4364 4365 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4366 hci_iso_notify_can_send_now(); 4367 #endif 4368 // L2CAP receives this event via the hci_emit_event below 4369 4370 #ifdef ENABLE_CLASSIC 4371 // For SCO, we do the can_send_now_check here 4372 hci_notify_if_sco_can_send_now(); 4373 #endif 4374 break; 4375 4376 #ifdef ENABLE_CLASSIC 4377 case HCI_EVENT_SCO_CAN_SEND_NOW: 4378 // For SCO, we do the can_send_now_check here 4379 hci_stack->sco_can_send_now = true; 4380 hci_notify_if_sco_can_send_now(); 4381 return; 4382 4383 // explode inquiry results for easier consumption 4384 case HCI_EVENT_INQUIRY_RESULT: 4385 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4386 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4387 gap_inquiry_explode(packet, size); 4388 break; 4389 #endif 4390 4391 #ifdef ENABLE_BLE 4392 case HCI_EVENT_LE_META: 4393 switch (packet[2]){ 4394 #ifdef ENABLE_LE_CENTRAL 4395 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4396 if (!hci_stack->le_scanning_enabled) break; 4397 le_handle_advertisement_report(packet, size); 4398 break; 4399 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4400 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4401 if (!hci_stack->le_scanning_enabled) break; 4402 le_handle_extended_advertisement_report(packet, size); 4403 break; 4404 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4405 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4406 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4407 break; 4408 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4409 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4410 if (advertising_handle == LE_EXTENDED_ADVERTISING_LEGACY_HANDLE){ 4411 // legacy advertisements 4412 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4413 hci_update_advertisements_enabled_for_current_roles(); 4414 } else { 4415 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4416 while (btstack_linked_list_iterator_has_next(&it)) { 4417 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4418 if (advertising_set->advertising_handle == advertising_handle){ 4419 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4420 } 4421 } 4422 } 4423 // event may come before le connection complete and announces new connection 4424 if (hci_subevent_le_advertising_set_terminated_get_status(packet) == ERROR_CODE_SUCCESS){ 4425 handle = hci_subevent_le_advertising_set_terminated_get_connection_handle(packet); 4426 conn = hci_connection_for_handle(handle); 4427 if (conn == NULL){ 4428 // use placeholder address for peer, will be overwritten in hci_handle_le_connection_complete_event() 4429 bd_addr_t addr; 4430 memset(addr, 0, 6); 4431 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_UNKNOWN, HCI_ROLE_SLAVE); 4432 if (conn != NULL){ 4433 conn->state = ANNOUNCED; 4434 conn->con_handle = handle; 4435 } 4436 } 4437 } 4438 break; 4439 #endif 4440 #endif 4441 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4442 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4443 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4444 hci_handle_le_connection_complete_event(packet); 4445 break; 4446 4447 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4448 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4449 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4450 conn = hci_connection_for_handle(handle); 4451 if (!conn) break; 4452 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4453 break; 4454 4455 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4456 // connection 4457 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4458 conn = hci_connection_for_handle(handle); 4459 if (conn) { 4460 // read arguments 4461 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4462 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4463 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4464 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4465 4466 // validate against current connection parameter range 4467 le_connection_parameter_range_t existing_range; 4468 gap_get_connection_parameter_range(&existing_range); 4469 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4470 if (update_parameter){ 4471 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4472 conn->le_conn_interval_min = le_conn_interval_min; 4473 conn->le_conn_interval_max = le_conn_interval_max; 4474 conn->le_conn_latency = le_conn_latency; 4475 conn->le_supervision_timeout = le_supervision_timeout; 4476 } else { 4477 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4478 } 4479 } 4480 break; 4481 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4482 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4483 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4484 conn = hci_connection_for_handle(handle); 4485 if (conn) { 4486 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4487 } 4488 break; 4489 #endif 4490 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4491 case HCI_SUBEVENT_LE_CIS_REQUEST: 4492 // incoming CIS request, allocate iso stream object and cache metadata 4493 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4494 hci_subevent_le_cis_request_get_cig_id(packet), 4495 hci_subevent_le_cis_request_get_cis_id(packet)); 4496 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4497 if (iso_stream != NULL){ 4498 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4499 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4500 } 4501 break; 4502 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4503 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4504 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4505 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4506 iso_stream = hci_iso_stream_for_con_handle(handle); 4507 btstack_assert(iso_stream != NULL); 4508 // track connection info 4509 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4510 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4511 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4512 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4513 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4514 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4515 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4516 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4517 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4518 // CIS Accept by Peripheral 4519 if (status == ERROR_CODE_SUCCESS){ 4520 if (iso_stream->max_sdu_p_to_c > 0){ 4521 // we're peripheral and we will send data 4522 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4523 } else { 4524 // we're peripheral and we will only receive data 4525 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4526 } 4527 } else { 4528 hci_cis_handle_created(iso_stream, status); 4529 } 4530 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4531 } else { 4532 // CIG Setup by Central 4533 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4534 btstack_assert(cig != NULL); 4535 // update iso stream state 4536 if (status == ERROR_CODE_SUCCESS){ 4537 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4538 } else { 4539 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4540 } 4541 // update cig state 4542 for (i=0;i<cig->num_cis;i++){ 4543 if (cig->cis_con_handles[i] == handle){ 4544 cig->cis_setup_active[i] = false; 4545 if (status == ERROR_CODE_SUCCESS){ 4546 cig->cis_established[i] = true; 4547 } else { 4548 hci_cis_handle_created(iso_stream, status); 4549 } 4550 } 4551 } 4552 4553 // trigger iso path setup if complete 4554 bool cis_setup_active = false; 4555 for (i=0;i<cig->num_cis;i++){ 4556 cis_setup_active |= cig->cis_setup_active[i]; 4557 } 4558 if (cis_setup_active == false){ 4559 cig->state_vars.next_cis = 0; 4560 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4561 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4562 } 4563 } 4564 } 4565 break; 4566 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4567 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4568 big = hci_big_for_handle(packet[4]); 4569 if (big != NULL){ 4570 uint8_t status = packet[3]; 4571 if (status == ERROR_CODE_SUCCESS){ 4572 // store bis_con_handles and trigger iso path setup 4573 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4574 4575 for (i=0;i<num_bis;i++){ 4576 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4577 big->bis_con_handles[i] = bis_handle; 4578 // assign bis handle 4579 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4580 while (btstack_linked_list_iterator_has_next(&it)){ 4581 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4582 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4583 (iso_stream->group_id == big->big_handle)){ 4584 iso_stream->cis_handle = bis_handle; 4585 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4586 break; 4587 } 4588 } 4589 } 4590 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4591 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4592 big->state_vars.next_bis = 0; 4593 } 4594 } else { 4595 // create BIG failed or has been stopped by us 4596 hci_iso_create_big_failed(big, status); 4597 } 4598 } 4599 break; 4600 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4601 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4602 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4603 if (big != NULL){ 4604 // finalize associated ISO streams 4605 4606 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4607 while (btstack_linked_list_iterator_has_next(&it)){ 4608 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4609 if (iso_stream->group_id == big->big_handle){ 4610 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4611 btstack_linked_list_iterator_remove(&it); 4612 btstack_memory_hci_iso_stream_free(iso_stream); 4613 } 4614 } 4615 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4616 switch (big->state){ 4617 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4618 hci_emit_big_created(big, big->state_vars.status); 4619 break; 4620 default: 4621 hci_emit_big_terminated(big); 4622 break; 4623 } 4624 } 4625 break; 4626 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4627 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4628 big_sync = hci_big_sync_for_handle(packet[4]); 4629 if (big_sync != NULL){ 4630 uint8_t status = packet[3]; 4631 if (status == ERROR_CODE_SUCCESS){ 4632 // store bis_con_handles and trigger iso path setup 4633 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4634 for (i=0;i<num_bis;i++){ 4635 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4636 big_sync->bis_con_handles[i] = bis_handle; 4637 // setup iso_stream_t 4638 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4639 while (btstack_linked_list_iterator_has_next(&it)){ 4640 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4641 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4642 (iso_stream->group_id == big_sync->big_handle)){ 4643 iso_stream->cis_handle = bis_handle; 4644 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4645 break; 4646 } 4647 } 4648 } 4649 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4650 // trigger iso path setup 4651 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4652 big_sync->state_vars.next_bis = 0; 4653 } 4654 } else { 4655 // create BIG Sync failed or has been stopped by us 4656 hci_iso_big_sync_failed(big_sync, status); 4657 } 4658 } 4659 break; 4660 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4661 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4662 big_sync = hci_big_sync_for_handle(packet[4]); 4663 if (big_sync != NULL){ 4664 uint8_t big_handle = packet[4]; 4665 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4666 hci_emit_big_sync_stopped(big_handle); 4667 } 4668 break; 4669 #endif 4670 default: 4671 break; 4672 } 4673 break; 4674 #endif 4675 case HCI_EVENT_VENDOR_SPECIFIC: 4676 // Vendor specific commands often create vendor specific event instead of num completed packets 4677 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4678 switch (hci_stack->manufacturer){ 4679 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4680 hci_stack->num_cmd_packets = 1; 4681 break; 4682 default: 4683 break; 4684 } 4685 break; 4686 default: 4687 break; 4688 } 4689 4690 handle_event_for_current_stack_state(packet, size); 4691 4692 // notify upper stack 4693 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4694 4695 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4696 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4697 handle = little_endian_read_16(packet, 3); 4698 hci_connection_t * aConn = hci_connection_for_handle(handle); 4699 // discard connection if app did not trigger a reconnect in the event handler 4700 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4701 hci_shutdown_connection(aConn); 4702 } 4703 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4704 hci_controller_dump_packets(); 4705 #endif 4706 } 4707 4708 // execute main loop 4709 hci_run(); 4710 } 4711 4712 #ifdef ENABLE_CLASSIC 4713 4714 static void sco_handler(uint8_t * packet, uint16_t size){ 4715 // lookup connection struct 4716 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4717 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4718 if (!conn) return; 4719 4720 #ifdef ENABLE_SCO_OVER_HCI 4721 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4722 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4723 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4724 packet[2] = 0x3c; 4725 memmove(&packet[3], &packet[23], 63); 4726 size = 63; 4727 } 4728 } 4729 4730 if (hci_have_usb_transport()){ 4731 // Nothing to do 4732 } else { 4733 // log_debug("sco flow %u, handle 0x%04x, packets sent %u, bytes send %u", hci_stack->synchronous_flow_control_enabled, (int) con_handle, conn->num_packets_sent, conn->num_sco_bytes_sent); 4734 if (hci_stack->synchronous_flow_control_enabled == 0){ 4735 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4736 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4737 if (conn->sco_tx_active == 0){ 4738 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4739 conn->sco_tx_active = 1; 4740 conn->sco_tx_ready = max_sco_packets; 4741 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4742 hci_notify_if_sco_can_send_now(); 4743 } 4744 } else { 4745 if (conn->sco_tx_ready < max_sco_packets){ 4746 conn->sco_tx_ready++; 4747 } 4748 hci_notify_if_sco_can_send_now(); 4749 } 4750 } 4751 } 4752 #endif 4753 4754 // deliver to app 4755 if (hci_stack->sco_packet_handler) { 4756 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4757 } 4758 4759 #ifdef HAVE_SCO_TRANSPORT 4760 // We can send one packet for each received packet 4761 conn->sco_tx_ready++; 4762 hci_notify_if_sco_can_send_now(); 4763 #endif 4764 4765 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4766 conn->num_packets_completed++; 4767 hci_stack->host_completed_packets = 1; 4768 hci_run(); 4769 #endif 4770 } 4771 #endif 4772 4773 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4774 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4775 // propagate ISO packets received as ACL 4776 hci_iso_stream_t * iso_stream = NULL; 4777 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4778 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4779 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4780 if (iso_stream != NULL){ 4781 packet_type = HCI_ISO_DATA_PACKET; 4782 } 4783 } 4784 #endif 4785 4786 // don't log internal events unless requested 4787 bool internal_event = (packet_type == HCI_EVENT_PACKET) && (hci_event_packet_get_type(packet) >= BTSTACK_EVENT_FIRST); 4788 bool log_packet = internal_event == false; 4789 #ifdef ENABLE_LOG_BTSTACK_EVENTS 4790 log_packet = true; 4791 #endif 4792 if (log_packet){ 4793 hci_dump_packet(packet_type, 1, packet, size); 4794 } 4795 4796 switch (packet_type) { 4797 case HCI_EVENT_PACKET: 4798 event_handler(packet, size); 4799 break; 4800 case HCI_ACL_DATA_PACKET: 4801 acl_handler(packet, size); 4802 break; 4803 #ifdef ENABLE_CLASSIC 4804 case HCI_SCO_DATA_PACKET: 4805 sco_handler(packet, size); 4806 break; 4807 #endif 4808 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4809 case HCI_ISO_DATA_PACKET: 4810 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4811 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4812 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4813 } 4814 hci_iso_packet_handler(iso_stream, packet, size); 4815 break; 4816 #endif 4817 default: 4818 break; 4819 } 4820 } 4821 4822 /** 4823 * @brief Add event packet handler. 4824 */ 4825 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4826 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4827 } 4828 4829 /** 4830 * @brief Remove event packet handler. 4831 */ 4832 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4833 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4834 } 4835 4836 /** Register HCI packet handlers */ 4837 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4838 hci_stack->acl_packet_handler = handler; 4839 } 4840 4841 #ifdef ENABLE_CLASSIC 4842 /** 4843 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4844 */ 4845 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4846 hci_stack->sco_packet_handler = handler; 4847 } 4848 #endif 4849 4850 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4851 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4852 hci_stack->iso_packet_handler = handler; 4853 } 4854 #endif 4855 4856 static void hci_state_reset(void){ 4857 // no connections yet 4858 hci_stack->connections = NULL; 4859 4860 // keep discoverable/connectable as this has been requested by the client(s) 4861 // hci_stack->discoverable = 0; 4862 // hci_stack->connectable = 0; 4863 // hci_stack->bondable = 1; 4864 // hci_stack->own_addr_type = 0; 4865 4866 // buffer is free 4867 hci_stack->hci_packet_buffer_reserved = false; 4868 4869 // no pending cmds 4870 hci_stack->decline_reason = 0; 4871 4872 hci_stack->secure_connections_active = false; 4873 4874 #ifdef ENABLE_CLASSIC 4875 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4876 4877 hci_stack->gap_tasks_classic = 4878 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4879 GAP_TASK_SET_CLASS_OF_DEVICE | 4880 GAP_TASK_SET_LOCAL_NAME | 4881 GAP_TASK_SET_EIR_DATA | 4882 GAP_TASK_WRITE_SCAN_ENABLE | 4883 GAP_TASK_WRITE_PAGE_TIMEOUT; 4884 #endif 4885 4886 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4887 hci_stack->classic_read_local_oob_data = false; 4888 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4889 #endif 4890 4891 // LE 4892 #ifdef ENABLE_BLE 4893 memset(hci_stack->le_random_address, 0, 6); 4894 hci_stack->le_random_address_set = 0; 4895 #endif 4896 #ifdef ENABLE_LE_CENTRAL 4897 hci_stack->le_scanning_active = false; 4898 hci_stack->le_scanning_param_update = true; 4899 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4900 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4901 hci_stack->le_whitelist_capacity = 0; 4902 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4903 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4904 #endif 4905 #endif 4906 #ifdef ENABLE_LE_PERIPHERAL 4907 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4908 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4909 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4910 } 4911 if (hci_stack->le_advertisements_data != NULL){ 4912 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4913 } 4914 #endif 4915 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4916 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4917 #endif 4918 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4919 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4920 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4921 #endif 4922 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4923 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4924 #endif 4925 } 4926 4927 #ifdef ENABLE_CLASSIC 4928 /** 4929 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4930 */ 4931 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4932 // store and open remote device db 4933 hci_stack->link_key_db = link_key_db; 4934 if (hci_stack->link_key_db) { 4935 hci_stack->link_key_db->open(); 4936 } 4937 } 4938 #endif 4939 4940 void hci_init(const hci_transport_t *transport, const void *config){ 4941 4942 #ifdef HAVE_MALLOC 4943 if (!hci_stack) { 4944 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4945 } 4946 btstack_assert(hci_stack != NULL); 4947 #else 4948 hci_stack = &hci_stack_static; 4949 #endif 4950 memset(hci_stack, 0, sizeof(hci_stack_t)); 4951 4952 // reference to use transport layer implementation 4953 hci_stack->hci_transport = transport; 4954 4955 // reference to used config 4956 hci_stack->config = config; 4957 4958 // setup pointer for outgoing packet buffer 4959 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4960 4961 // max acl payload size defined in config.h 4962 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4963 4964 // register packet handlers with transport 4965 transport->register_packet_handler(&packet_handler); 4966 4967 hci_stack->state = HCI_STATE_OFF; 4968 4969 // class of device 4970 hci_stack->class_of_device = 0x007a020c; // Smartphone 4971 4972 // bondable by default 4973 hci_stack->bondable = 1; 4974 4975 #ifdef ENABLE_CLASSIC 4976 // classic name 4977 hci_stack->local_name = default_classic_name; 4978 4979 // Master slave policy 4980 hci_stack->master_slave_policy = 1; 4981 4982 // Allow Role Switch 4983 hci_stack->allow_role_switch = 1; 4984 4985 // Default / minimum security level = 2 4986 hci_stack->gap_security_level = LEVEL_2; 4987 4988 // Default Security Mode 4 4989 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4990 4991 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4992 hci_stack->gap_required_encyrption_key_size = 7; 4993 4994 // Link Supervision Timeout 4995 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4996 4997 // Page Timeout 4998 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4999 5000 // All ACL packet types are enabled 5001 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 5002 #endif 5003 5004 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 5005 hci_stack->ssp_enable = 1; 5006 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 5007 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5008 hci_stack->ssp_auto_accept = 1; 5009 5010 // Secure Connections: enable (requires support from Controller) 5011 hci_stack->secure_connections_enable = true; 5012 5013 // voice setting - signed 16 bit pcm data with CVSD over the air 5014 hci_stack->sco_voice_setting = 0x60; 5015 5016 #ifdef ENABLE_BLE 5017 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 5018 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 5019 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 5020 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 5021 hci_stack->le_connection_latency = 4; // 4 5022 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 5023 hci_stack->le_minimum_ce_length = 0; // 0 ms 5024 hci_stack->le_maximum_ce_length = 0; // 0 ms 5025 #endif 5026 5027 #ifdef ENABLE_LE_CENTRAL 5028 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 5029 5030 // default LE Scanning 5031 hci_stack->le_scan_type = 0x01; // active 5032 hci_stack->le_scan_interval = 0x1e0; // 300 ms 5033 hci_stack->le_scan_window = 0x30; // 30 ms 5034 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 5035 #endif 5036 5037 #ifdef ENABLE_LE_PERIPHERAL 5038 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 5039 5040 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 5041 hci_stack->le_advertisements_interval_min = 0x0800; 5042 hci_stack->le_advertisements_interval_max = 0x0800; 5043 hci_stack->le_advertisements_type = 0; 5044 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 5045 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 5046 hci_stack->le_advertisements_channel_map = 0x07; 5047 hci_stack->le_advertisements_filter_policy = 0; 5048 #endif 5049 5050 // connection parameter range used to answer connection parameter update requests in l2cap 5051 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 5052 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 5053 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 5054 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 5055 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 5056 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 5057 5058 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5059 hci_stack->iso_packets_to_queue = 1; 5060 #endif 5061 5062 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5063 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5064 #endif 5065 5066 hci_state_reset(); 5067 } 5068 5069 void hci_deinit(void){ 5070 btstack_run_loop_remove_timer(&hci_stack->timeout); 5071 #ifdef HAVE_MALLOC 5072 if (hci_stack) { 5073 free(hci_stack); 5074 } 5075 #endif 5076 hci_stack = NULL; 5077 5078 #ifdef ENABLE_CLASSIC 5079 disable_l2cap_timeouts = 0; 5080 #endif 5081 } 5082 5083 /** 5084 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5085 */ 5086 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5087 hci_stack->chipset = chipset_driver; 5088 5089 // reset chipset driver - init is also called on power_up 5090 if (hci_stack->chipset && hci_stack->chipset->init){ 5091 hci_stack->chipset->init(hci_stack->config); 5092 } 5093 } 5094 5095 void hci_enable_custom_pre_init(void){ 5096 hci_stack->chipset_pre_init = true; 5097 } 5098 5099 /** 5100 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5101 */ 5102 void hci_set_control(const btstack_control_t *hardware_control){ 5103 // references to used control implementation 5104 hci_stack->control = hardware_control; 5105 // init with transport config 5106 hardware_control->init(hci_stack->config); 5107 } 5108 5109 static void hci_discard_connections(void){ 5110 btstack_linked_list_iterator_t it; 5111 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5112 while (btstack_linked_list_iterator_has_next(&it)){ 5113 // cancel all l2cap connections by emitting disconnection complete before shutdown (free) connection 5114 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5115 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5116 hci_shutdown_connection(connection); 5117 } 5118 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5119 while (hci_stack->iso_streams != NULL){ 5120 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5121 } 5122 #endif 5123 } 5124 5125 void hci_close(void){ 5126 5127 #ifdef ENABLE_CLASSIC 5128 // close remote device db 5129 if (hci_stack->link_key_db) { 5130 hci_stack->link_key_db->close(); 5131 } 5132 #endif 5133 5134 hci_discard_connections(); 5135 5136 hci_power_control(HCI_POWER_OFF); 5137 5138 #ifdef HAVE_MALLOC 5139 free(hci_stack); 5140 #endif 5141 hci_stack = NULL; 5142 } 5143 5144 #ifdef HAVE_SCO_TRANSPORT 5145 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5146 hci_stack->sco_transport = sco_transport; 5147 sco_transport->register_packet_handler(&packet_handler); 5148 } 5149 #endif 5150 5151 #ifdef ENABLE_CLASSIC 5152 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5153 // validate range and set 5154 if (encryption_key_size < 7) return; 5155 if (encryption_key_size > 16) return; 5156 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5157 } 5158 5159 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5160 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5161 hci_stack->gap_security_mode = security_mode; 5162 return ERROR_CODE_SUCCESS; 5163 } else { 5164 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5165 } 5166 } 5167 5168 gap_security_mode_t gap_get_security_mode(void){ 5169 return hci_stack->gap_security_mode; 5170 } 5171 5172 void gap_set_security_level(gap_security_level_t security_level){ 5173 hci_stack->gap_security_level = security_level; 5174 } 5175 5176 gap_security_level_t gap_get_security_level(void){ 5177 if (hci_stack->gap_secure_connections_only_mode){ 5178 return LEVEL_4; 5179 } 5180 return hci_stack->gap_security_level; 5181 } 5182 5183 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5184 hci_stack->gap_minimal_service_security_level = security_level; 5185 } 5186 5187 void gap_set_secure_connections_only_mode(bool enable){ 5188 hci_stack->gap_secure_connections_only_mode = enable; 5189 } 5190 5191 bool gap_get_secure_connections_only_mode(void){ 5192 return hci_stack->gap_secure_connections_only_mode; 5193 } 5194 #endif 5195 5196 #ifdef ENABLE_CLASSIC 5197 void gap_set_class_of_device(uint32_t class_of_device){ 5198 hci_stack->class_of_device = class_of_device; 5199 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5200 hci_run(); 5201 } 5202 5203 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5204 hci_stack->default_link_policy_settings = default_link_policy_settings; 5205 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5206 hci_run(); 5207 } 5208 5209 void gap_set_allow_role_switch(bool allow_role_switch){ 5210 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5211 } 5212 5213 uint8_t hci_get_allow_role_switch(void){ 5214 return hci_stack->allow_role_switch; 5215 } 5216 5217 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5218 hci_stack->link_supervision_timeout = link_supervision_timeout; 5219 } 5220 5221 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5222 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5223 } 5224 5225 uint16_t hci_automatic_flush_timeout(void){ 5226 return hci_stack->automatic_flush_timeout; 5227 } 5228 5229 void hci_disable_l2cap_timeout_check(void){ 5230 disable_l2cap_timeouts = 1; 5231 } 5232 #endif 5233 5234 #ifndef HAVE_HOST_CONTROLLER_API 5235 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5236 void hci_set_bd_addr(bd_addr_t addr){ 5237 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5238 hci_stack->custom_bd_addr_set = 1; 5239 } 5240 #endif 5241 5242 // State-Module-Driver overview 5243 // state module low-level 5244 // HCI_STATE_OFF off close 5245 // HCI_STATE_INITIALIZING, on open 5246 // HCI_STATE_WORKING, on open 5247 // HCI_STATE_HALTING, on open 5248 // HCI_STATE_SLEEPING, off/sleep close 5249 // HCI_STATE_FALLING_ASLEEP on open 5250 5251 static int hci_power_control_on(void){ 5252 5253 // power on 5254 int err = 0; 5255 if (hci_stack->control && hci_stack->control->on){ 5256 err = (*hci_stack->control->on)(); 5257 } 5258 if (err){ 5259 log_error( "POWER_ON failed"); 5260 hci_emit_hci_open_failed(); 5261 return err; 5262 } 5263 5264 // int chipset driver 5265 if (hci_stack->chipset && hci_stack->chipset->init){ 5266 hci_stack->chipset->init(hci_stack->config); 5267 } 5268 5269 // init transport 5270 if (hci_stack->hci_transport->init){ 5271 hci_stack->hci_transport->init(hci_stack->config); 5272 } 5273 5274 // open transport 5275 err = hci_stack->hci_transport->open(); 5276 if (err){ 5277 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5278 if (hci_stack->control && hci_stack->control->off){ 5279 (*hci_stack->control->off)(); 5280 } 5281 hci_emit_hci_open_failed(); 5282 return err; 5283 } 5284 return 0; 5285 } 5286 5287 static void hci_power_control_off(void){ 5288 5289 log_info("hci_power_control_off"); 5290 5291 // close low-level device 5292 hci_stack->hci_transport->close(); 5293 5294 log_info("hci_power_control_off - hci_transport closed"); 5295 5296 // power off 5297 if (hci_stack->control && hci_stack->control->off){ 5298 (*hci_stack->control->off)(); 5299 } 5300 5301 log_info("hci_power_control_off - control closed"); 5302 5303 hci_stack->state = HCI_STATE_OFF; 5304 } 5305 5306 static void hci_power_control_sleep(void){ 5307 5308 log_info("hci_power_control_sleep"); 5309 5310 #if 0 5311 // don't close serial port during sleep 5312 5313 // close low-level device 5314 hci_stack->hci_transport->close(hci_stack->config); 5315 #endif 5316 5317 // sleep mode 5318 if (hci_stack->control && hci_stack->control->sleep){ 5319 (*hci_stack->control->sleep)(); 5320 } 5321 5322 hci_stack->state = HCI_STATE_SLEEPING; 5323 } 5324 5325 static int hci_power_control_wake(void){ 5326 5327 log_info("hci_power_control_wake"); 5328 5329 // wake on 5330 if (hci_stack->control && hci_stack->control->wake){ 5331 (*hci_stack->control->wake)(); 5332 } 5333 5334 #if 0 5335 // open low-level device 5336 int err = hci_stack->hci_transport->open(hci_stack->config); 5337 if (err){ 5338 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5339 if (hci_stack->control && hci_stack->control->off){ 5340 (*hci_stack->control->off)(); 5341 } 5342 hci_emit_hci_open_failed(); 5343 return err; 5344 } 5345 #endif 5346 5347 return 0; 5348 } 5349 5350 static void hci_power_enter_initializing_state(void){ 5351 // set up state machine 5352 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5353 hci_stack->hci_packet_buffer_reserved = false; 5354 hci_stack->state = HCI_STATE_INITIALIZING; 5355 5356 #ifndef HAVE_HOST_CONTROLLER_API 5357 if (hci_stack->chipset_pre_init) { 5358 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5359 } else 5360 #endif 5361 { 5362 hci_stack->substate = HCI_INIT_SEND_RESET; 5363 } 5364 } 5365 5366 static void hci_power_enter_halting_state(void){ 5367 #ifdef ENABLE_BLE 5368 // drop entries scheduled for removal, mark others for re-adding 5369 btstack_linked_list_iterator_t it; 5370 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5371 while (btstack_linked_list_iterator_has_next(&it)){ 5372 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5373 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5374 btstack_linked_list_iterator_remove(&it); 5375 btstack_memory_whitelist_entry_free(entry); 5376 } else { 5377 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5378 } 5379 } 5380 #ifdef ENABLE_LE_CENTRAL 5381 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5382 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5383 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5384 while (btstack_linked_list_iterator_has_next(&it)){ 5385 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5386 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5387 btstack_linked_list_iterator_remove(&it); 5388 btstack_memory_periodic_advertiser_list_entry_free(entry); 5389 } else { 5390 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5391 continue; 5392 } 5393 } 5394 #endif 5395 #endif 5396 #endif 5397 // see hci_run 5398 hci_stack->state = HCI_STATE_HALTING; 5399 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5400 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5401 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5402 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5403 btstack_run_loop_add_timer(&hci_stack->timeout); 5404 } 5405 5406 // returns error 5407 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5408 int err; 5409 switch (power_mode){ 5410 case HCI_POWER_ON: 5411 err = hci_power_control_on(); 5412 if (err != 0) { 5413 log_error("hci_power_control_on() error %d", err); 5414 return err; 5415 } 5416 hci_power_enter_initializing_state(); 5417 break; 5418 case HCI_POWER_OFF: 5419 // do nothing 5420 break; 5421 case HCI_POWER_SLEEP: 5422 // do nothing (with SLEEP == OFF) 5423 break; 5424 default: 5425 btstack_assert(false); 5426 break; 5427 } 5428 return ERROR_CODE_SUCCESS; 5429 } 5430 5431 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5432 switch (power_mode){ 5433 case HCI_POWER_ON: 5434 // do nothing 5435 break; 5436 case HCI_POWER_OFF: 5437 // no connections yet, just turn it off 5438 hci_power_control_off(); 5439 break; 5440 case HCI_POWER_SLEEP: 5441 // no connections yet, just turn it off 5442 hci_power_control_sleep(); 5443 break; 5444 default: 5445 btstack_assert(false); 5446 break; 5447 } 5448 return ERROR_CODE_SUCCESS; 5449 } 5450 5451 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5452 switch (power_mode){ 5453 case HCI_POWER_ON: 5454 // do nothing 5455 break; 5456 case HCI_POWER_OFF: 5457 hci_power_enter_halting_state(); 5458 break; 5459 case HCI_POWER_SLEEP: 5460 // see hci_run 5461 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5462 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5463 break; 5464 default: 5465 btstack_assert(false); 5466 break; 5467 } 5468 return ERROR_CODE_SUCCESS; 5469 } 5470 5471 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5472 switch (power_mode){ 5473 case HCI_POWER_ON: 5474 hci_power_enter_initializing_state(); 5475 break; 5476 case HCI_POWER_OFF: 5477 // do nothing 5478 break; 5479 case HCI_POWER_SLEEP: 5480 // see hci_run 5481 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5482 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5483 break; 5484 default: 5485 btstack_assert(false); 5486 break; 5487 } 5488 return ERROR_CODE_SUCCESS; 5489 } 5490 5491 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5492 switch (power_mode){ 5493 case HCI_POWER_ON: 5494 hci_power_enter_initializing_state(); 5495 break; 5496 case HCI_POWER_OFF: 5497 hci_power_enter_halting_state(); 5498 break; 5499 case HCI_POWER_SLEEP: 5500 // do nothing 5501 break; 5502 default: 5503 btstack_assert(false); 5504 break; 5505 } 5506 return ERROR_CODE_SUCCESS; 5507 } 5508 5509 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5510 int err; 5511 switch (power_mode){ 5512 case HCI_POWER_ON: 5513 err = hci_power_control_wake(); 5514 if (err) return err; 5515 hci_power_enter_initializing_state(); 5516 break; 5517 case HCI_POWER_OFF: 5518 hci_power_enter_halting_state(); 5519 break; 5520 case HCI_POWER_SLEEP: 5521 // do nothing 5522 break; 5523 default: 5524 btstack_assert(false); 5525 break; 5526 } 5527 return ERROR_CODE_SUCCESS; 5528 } 5529 5530 int hci_power_control(HCI_POWER_MODE power_mode){ 5531 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5532 btstack_run_loop_remove_timer(&hci_stack->timeout); 5533 int err = 0; 5534 switch (hci_stack->state){ 5535 case HCI_STATE_OFF: 5536 err = hci_power_control_state_off(power_mode); 5537 break; 5538 case HCI_STATE_INITIALIZING: 5539 err = hci_power_control_state_initializing(power_mode); 5540 break; 5541 case HCI_STATE_WORKING: 5542 err = hci_power_control_state_working(power_mode); 5543 break; 5544 case HCI_STATE_HALTING: 5545 err = hci_power_control_state_halting(power_mode); 5546 break; 5547 case HCI_STATE_FALLING_ASLEEP: 5548 err = hci_power_control_state_falling_asleep(power_mode); 5549 break; 5550 case HCI_STATE_SLEEPING: 5551 err = hci_power_control_state_sleeping(power_mode); 5552 break; 5553 default: 5554 btstack_assert(false); 5555 break; 5556 } 5557 if (err != 0){ 5558 return err; 5559 } 5560 5561 // create internal event 5562 hci_emit_state(); 5563 5564 // trigger next/first action 5565 hci_run(); 5566 5567 return 0; 5568 } 5569 5570 5571 static void hci_halting_run(void) { 5572 5573 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5574 5575 hci_connection_t *connection; 5576 #ifdef ENABLE_BLE 5577 #ifdef ENABLE_LE_PERIPHERAL 5578 bool stop_advertisements; 5579 #endif 5580 #endif 5581 5582 switch (hci_stack->substate) { 5583 case HCI_HALTING_CLASSIC_STOP: 5584 #ifdef ENABLE_CLASSIC 5585 if (!hci_can_send_command_packet_now()) return; 5586 5587 if (hci_stack->connectable || hci_stack->discoverable){ 5588 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5589 hci_send_cmd(&hci_write_scan_enable, 0); 5590 return; 5591 } 5592 #endif 5593 /* fall through */ 5594 5595 case HCI_HALTING_LE_ADV_STOP: 5596 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5597 5598 #ifdef ENABLE_BLE 5599 #ifdef ENABLE_LE_PERIPHERAL 5600 if (!hci_can_send_command_packet_now()) return; 5601 5602 stop_advertisements = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5603 5604 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5605 if (hci_le_extended_advertising_supported()){ 5606 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5607 btstack_linked_list_iterator_t it; 5608 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5609 // stop all periodic advertisements and check if an extended set is active 5610 while (btstack_linked_list_iterator_has_next(&it)){ 5611 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5612 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5613 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5614 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5615 return; 5616 } 5617 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5618 stop_advertisements = true; 5619 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5620 } 5621 } 5622 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5623 if (stop_advertisements){ 5624 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5625 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5626 return; 5627 } 5628 } else 5629 #else /* ENABLE_LE_PERIPHERAL */ 5630 { 5631 if (stop_advertisements) { 5632 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5633 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5634 return; 5635 } 5636 } 5637 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5638 #endif /* ENABLE_LE_PERIPHERAL */ 5639 #endif /* ENABLE_BLE */ 5640 5641 /* fall through */ 5642 5643 case HCI_HALTING_LE_SCAN_STOP: 5644 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5645 if (!hci_can_send_command_packet_now()) return; 5646 5647 #ifdef ENABLE_BLE 5648 #ifdef ENABLE_LE_CENTRAL 5649 if (hci_stack->le_scanning_active){ 5650 hci_le_scan_stop(); 5651 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5652 return; 5653 } 5654 #endif 5655 #endif 5656 5657 /* fall through */ 5658 5659 case HCI_HALTING_DISCONNECT_ALL: 5660 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5661 if (!hci_can_send_command_packet_now()) return; 5662 5663 // close all open connections 5664 connection = (hci_connection_t *) hci_stack->connections; 5665 if (connection) { 5666 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5667 5668 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", (void*)connection, con_handle, connection->state); 5669 5670 // check state 5671 switch(connection->state) { 5672 case SENT_DISCONNECT: 5673 case RECEIVED_DISCONNECTION_COMPLETE: 5674 // wait until connection is gone 5675 return; 5676 default: 5677 break; 5678 } 5679 5680 // finally, send the disconnect command 5681 connection->state = SENT_DISCONNECT; 5682 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5683 return; 5684 } 5685 5686 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5687 // stop BIGs and BIG Syncs 5688 if (hci_stack->le_audio_bigs != NULL){ 5689 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5690 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5691 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5692 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5693 return; 5694 } 5695 if (hci_stack->le_audio_big_syncs != NULL){ 5696 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5697 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5698 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5699 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5700 return; 5701 } 5702 #endif 5703 5704 btstack_run_loop_remove_timer(&hci_stack->timeout); 5705 5706 // no connections left, wait a bit to assert that btstack_crypto isn't waiting for an HCI event 5707 log_info("HCI_STATE_HALTING: wait 50 ms"); 5708 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5709 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5710 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5711 btstack_run_loop_add_timer(&hci_stack->timeout); 5712 break; 5713 5714 case HCI_HALTING_W4_CLOSE_TIMER: 5715 // keep waiting 5716 break; 5717 5718 case HCI_HALTING_CLOSE: 5719 // close left over connections (that had not been properly closed before) 5720 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5721 hci_discard_connections(); 5722 5723 log_info("HCI_STATE_HALTING, calling off"); 5724 5725 // switch mode 5726 hci_power_control_off(); 5727 5728 log_info("HCI_STATE_HALTING, emitting state"); 5729 hci_emit_state(); 5730 log_info("HCI_STATE_HALTING, done"); 5731 break; 5732 5733 default: 5734 break; 5735 } 5736 } 5737 5738 static void hci_falling_asleep_run(void){ 5739 hci_connection_t * connection; 5740 switch(hci_stack->substate) { 5741 case HCI_FALLING_ASLEEP_DISCONNECT: 5742 log_info("HCI_STATE_FALLING_ASLEEP"); 5743 // close all open connections 5744 connection = (hci_connection_t *) hci_stack->connections; 5745 if (connection){ 5746 5747 // send disconnect 5748 if (!hci_can_send_command_packet_now()) return; 5749 5750 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", (void*)connection, (uint16_t)connection->con_handle); 5751 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5752 5753 // send disconnected event right away - causes higher layer connections to get closed, too. 5754 hci_shutdown_connection(connection); 5755 return; 5756 } 5757 5758 if (hci_classic_supported()){ 5759 // disable page and inquiry scan 5760 if (!hci_can_send_command_packet_now()) return; 5761 5762 log_info("HCI_STATE_HALTING, disabling inq scans"); 5763 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5764 5765 // continue in next substate 5766 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5767 break; 5768 } 5769 5770 /* fall through */ 5771 5772 case HCI_FALLING_ASLEEP_COMPLETE: 5773 log_info("HCI_STATE_HALTING, calling sleep"); 5774 // switch mode 5775 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5776 hci_emit_state(); 5777 break; 5778 5779 default: 5780 break; 5781 } 5782 } 5783 5784 #ifdef ENABLE_CLASSIC 5785 5786 static void hci_update_scan_enable(void){ 5787 // 2 = page scan, 1 = inq scan 5788 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5789 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5790 hci_run(); 5791 } 5792 5793 void gap_discoverable_control(uint8_t enable){ 5794 if (enable) enable = 1; // normalize argument 5795 5796 if (hci_stack->discoverable == enable){ 5797 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5798 return; 5799 } 5800 5801 hci_stack->discoverable = enable; 5802 hci_update_scan_enable(); 5803 } 5804 5805 void gap_connectable_control(uint8_t enable){ 5806 if (enable) enable = 1; // normalize argument 5807 5808 // don't emit event 5809 if (hci_stack->connectable == enable) return; 5810 5811 hci_stack->connectable = enable; 5812 hci_update_scan_enable(); 5813 } 5814 #endif 5815 5816 void gap_local_bd_addr(bd_addr_t address_buffer){ 5817 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5818 } 5819 5820 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5821 static void hci_host_num_completed_packets(void){ 5822 5823 // create packet manually as arrays are not supported and num_commands should not get reduced 5824 hci_reserve_packet_buffer(); 5825 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5826 5827 uint16_t size = 0; 5828 uint16_t num_handles = 0; 5829 packet[size++] = 0x35; 5830 packet[size++] = 0x0c; 5831 size++; // skip param len 5832 size++; // skip num handles 5833 5834 // add { handle, packets } entries 5835 btstack_linked_item_t * it; 5836 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5837 hci_connection_t * connection = (hci_connection_t *) it; 5838 if (connection->num_packets_completed){ 5839 little_endian_store_16(packet, size, connection->con_handle); 5840 size += 2; 5841 little_endian_store_16(packet, size, connection->num_packets_completed); 5842 size += 2; 5843 // 5844 num_handles++; 5845 connection->num_packets_completed = 0; 5846 } 5847 } 5848 5849 packet[2] = size - 3; 5850 packet[3] = num_handles; 5851 5852 hci_stack->host_completed_packets = 0; 5853 5854 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5855 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5856 5857 // release packet buffer for synchronous transport implementations 5858 if (hci_transport_synchronous()){ 5859 hci_release_packet_buffer(); 5860 hci_emit_transport_packet_sent(); 5861 } 5862 } 5863 #endif 5864 5865 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5866 UNUSED(ds); 5867 hci_stack->substate = HCI_HALTING_CLOSE; 5868 hci_halting_run(); 5869 } 5870 5871 static bool hci_run_acl_fragments(void){ 5872 if (hci_stack->acl_fragmentation_total_size > 0u) { 5873 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5874 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5875 if (connection) { 5876 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5877 hci_send_acl_packet_fragments(connection); 5878 return true; 5879 } 5880 } else { 5881 // connection gone -> discard further fragments 5882 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5883 hci_stack->acl_fragmentation_total_size = 0; 5884 hci_stack->acl_fragmentation_pos = 0; 5885 } 5886 } 5887 return false; 5888 } 5889 5890 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5891 static bool hci_run_iso_fragments(void){ 5892 if (hci_stack->iso_fragmentation_total_size > 0u) { 5893 // TODO: flow control 5894 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5895 hci_send_iso_packet_fragments(); 5896 return true; 5897 } 5898 } 5899 return false; 5900 } 5901 #endif 5902 5903 #ifdef ENABLE_CLASSIC 5904 5905 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5906 static bool hci_classic_operation_active(void) { 5907 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5908 return true; 5909 } 5910 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5911 return true; 5912 } 5913 btstack_linked_item_t * it; 5914 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5915 hci_connection_t *connection = (hci_connection_t *) it; 5916 switch (connection->state) { 5917 case SENT_CREATE_CONNECTION: 5918 case SENT_CANCEL_CONNECTION: 5919 case SENT_DISCONNECT: 5920 return true; 5921 default: 5922 break; 5923 } 5924 } 5925 return false; 5926 } 5927 #endif 5928 5929 static bool hci_run_general_gap_classic(void){ 5930 5931 // assert stack is working and classic is active 5932 if (hci_classic_supported() == false) return false; 5933 if (hci_stack->state != HCI_STATE_WORKING) return false; 5934 5935 // decline incoming connections 5936 if (hci_stack->decline_reason){ 5937 uint8_t reason = hci_stack->decline_reason; 5938 hci_stack->decline_reason = 0; 5939 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5940 return true; 5941 } 5942 5943 if (hci_stack->gap_tasks_classic != 0){ 5944 hci_run_gap_tasks_classic(); 5945 return true; 5946 } 5947 5948 // start/stop inquiry 5949 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5950 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5951 if (hci_classic_operation_active() == false) 5952 #endif 5953 { 5954 uint8_t duration = hci_stack->inquiry_state; 5955 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5956 if (hci_stack->inquiry_max_period_length != 0){ 5957 hci_send_cmd(&hci_periodic_inquiry_mode, hci_stack->inquiry_max_period_length, hci_stack->inquiry_min_period_length, hci_stack->inquiry_lap, duration, 0); 5958 } else { 5959 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5960 } 5961 return true; 5962 } 5963 } 5964 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5965 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5966 hci_send_cmd(&hci_inquiry_cancel); 5967 return true; 5968 } 5969 5970 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5971 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5972 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5973 return true; 5974 } 5975 5976 // remote name request 5977 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5978 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5979 if (hci_classic_operation_active() == false) 5980 #endif 5981 { 5982 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5983 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5984 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5985 return true; 5986 } 5987 } 5988 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5989 // Local OOB data 5990 if (hci_stack->classic_read_local_oob_data){ 5991 hci_stack->classic_read_local_oob_data = false; 5992 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5993 hci_send_cmd(&hci_read_local_extended_oob_data); 5994 } else { 5995 hci_send_cmd(&hci_read_local_oob_data); 5996 } 5997 } 5998 #endif 5999 // pairing 6000 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 6001 uint8_t state = hci_stack->gap_pairing_state; 6002 uint8_t pin_code[PIN_CODE_LEN]; 6003 switch (state){ 6004 case GAP_PAIRING_STATE_SEND_PIN: 6005 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6006 memset(pin_code, 0, 16); 6007 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 6008 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 6009 break; 6010 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 6011 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6012 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 6013 break; 6014 case GAP_PAIRING_STATE_SEND_PASSKEY: 6015 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6016 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 6017 break; 6018 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 6019 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6020 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 6021 break; 6022 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 6023 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6024 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 6025 break; 6026 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 6027 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6028 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 6029 break; 6030 default: 6031 break; 6032 } 6033 return true; 6034 } 6035 return false; 6036 } 6037 #endif 6038 6039 #ifdef ENABLE_BLE 6040 6041 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6042 static uint8_t hci_le_num_phys(uint8_t phys){ 6043 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 6044 btstack_assert(phys); 6045 return num_bits_set[phys]; 6046 } 6047 #endif 6048 6049 #ifdef ENABLE_LE_CENTRAL 6050 static void hci_le_scan_stop(void){ 6051 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6052 if (hci_le_extended_advertising_supported()) { 6053 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 6054 } else 6055 #endif 6056 { 6057 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 6058 } 6059 } 6060 6061 static void 6062 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 6063 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6064 if (hci_le_extended_advertising_supported()) { 6065 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6066 uint16_t le_connection_scan_interval[3]; 6067 uint16_t le_connection_scan_window[3]; 6068 uint16_t le_connection_interval_min[3]; 6069 uint16_t le_connection_interval_max[3]; 6070 uint16_t le_connection_latency[3]; 6071 uint16_t le_supervision_timeout[3]; 6072 uint16_t le_minimum_ce_length[3]; 6073 uint16_t le_maximum_ce_length[3]; 6074 6075 uint8_t i; 6076 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6077 for (i=0;i<num_phys;i++){ 6078 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6079 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6080 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6081 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6082 le_connection_latency[i] = hci_stack->le_connection_latency; 6083 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6084 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6085 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6086 } 6087 hci_send_cmd(&hci_le_extended_create_connection, 6088 initiator_filter_policy, 6089 hci_stack->le_connection_own_addr_type, // our addr type: 6090 address_type, // peer address type 6091 address, // peer bd addr 6092 hci_stack->le_connection_phys, // initiating PHY 6093 le_connection_scan_interval, // conn scan interval 6094 le_connection_scan_window, // conn scan windows 6095 le_connection_interval_min, // conn interval min 6096 le_connection_interval_max, // conn interval max 6097 le_connection_latency, // conn latency 6098 le_supervision_timeout, // conn latency 6099 le_minimum_ce_length, // min ce length 6100 le_maximum_ce_length // max ce length 6101 ); 6102 } else 6103 #endif 6104 { 6105 hci_send_cmd(&hci_le_create_connection, 6106 hci_stack->le_connection_scan_interval, // conn scan interval 6107 hci_stack->le_connection_scan_window, // conn scan windows 6108 initiator_filter_policy, // don't use whitelist 6109 address_type, // peer address type 6110 address, // peer bd addr 6111 hci_stack->le_connection_own_addr_type, // our addr type: 6112 hci_stack->le_connection_interval_min, // conn interval min 6113 hci_stack->le_connection_interval_max, // conn interval max 6114 hci_stack->le_connection_latency, // conn latency 6115 hci_stack->le_supervision_timeout, // conn latency 6116 hci_stack->le_minimum_ce_length, // min ce length 6117 hci_stack->le_maximum_ce_length // max ce length 6118 ); 6119 } 6120 } 6121 #endif 6122 6123 #ifdef ENABLE_LE_PERIPHERAL 6124 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6125 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6126 uint8_t operation = 0; 6127 if (pos == 0){ 6128 // first fragment or complete data 6129 operation |= 1; 6130 } 6131 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6132 // last fragment or complete data 6133 operation |= 2; 6134 } 6135 return operation; 6136 } 6137 #endif 6138 #endif 6139 6140 static bool hci_whitelist_modification_pending(void) { 6141 btstack_linked_list_iterator_t it; 6142 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6143 while (btstack_linked_list_iterator_has_next(&it)){ 6144 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6145 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6146 return true; 6147 } 6148 } 6149 return false; 6150 } 6151 6152 static bool hci_whitelist_modification_process(void){ 6153 // add/remove entries 6154 btstack_linked_list_iterator_t it; 6155 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6156 while (btstack_linked_list_iterator_has_next(&it)){ 6157 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6158 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6159 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6160 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6161 bd_addr_type_t address_type = entry->address_type; 6162 bd_addr_t address; 6163 memcpy(address, entry->address, 6); 6164 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6165 // remove from whitelist if not scheduled for re-addition 6166 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6167 btstack_memory_whitelist_entry_free(entry); 6168 } 6169 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6170 return true; 6171 } 6172 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6173 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6174 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6175 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6176 return true; 6177 } 6178 } 6179 return false; 6180 } 6181 6182 static bool hci_run_general_gap_le(void){ 6183 6184 btstack_linked_list_iterator_t lit; 6185 UNUSED(lit); 6186 6187 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6188 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6189 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6190 hci_stack->le_resolvable_private_address_update_s = 0; 6191 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6192 return true; 6193 } 6194 #endif 6195 6196 // Phase 1: collect what to stop 6197 6198 #ifdef ENABLE_LE_CENTRAL 6199 bool scanning_stop = false; 6200 bool connecting_stop = false; 6201 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6202 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6203 bool periodic_sync_stop = false; 6204 #endif 6205 #endif 6206 #endif 6207 6208 #ifdef ENABLE_LE_PERIPHERAL 6209 bool advertising_stop = false; 6210 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6211 le_advertising_set_t * advertising_stop_set = NULL; 6212 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6213 bool periodic_advertising_stop = false; 6214 #endif 6215 #endif 6216 #endif 6217 6218 // check if own address changes 6219 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6220 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6221 6222 // check if whitelist needs modification 6223 bool whitelist_modification_pending = hci_whitelist_modification_pending(); 6224 6225 // check if resolving list needs modification 6226 bool resolving_list_modification_pending = false; 6227 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6228 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6229 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6230 resolving_list_modification_pending = true; 6231 } 6232 #endif 6233 6234 #ifdef ENABLE_LE_CENTRAL 6235 6236 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6237 // check if periodic advertiser list needs modification 6238 bool periodic_list_modification_pending = false; 6239 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6240 while (btstack_linked_list_iterator_has_next(&lit)){ 6241 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6242 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6243 periodic_list_modification_pending = true; 6244 break; 6245 } 6246 } 6247 #endif 6248 6249 // scanning control 6250 if (hci_stack->le_scanning_active) { 6251 // stop if: 6252 // - parameter change required 6253 // - it's disabled 6254 // - whitelist change required but used for scanning 6255 // - resolving list modified 6256 // - own address changes 6257 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6258 if ((hci_stack->le_scanning_param_update) || 6259 !hci_stack->le_scanning_enabled || 6260 (scanning_uses_whitelist && whitelist_modification_pending) || 6261 resolving_list_modification_pending || 6262 random_address_change){ 6263 6264 scanning_stop = true; 6265 } 6266 } 6267 6268 // connecting control 6269 bool connecting_with_whitelist; 6270 switch (hci_stack->le_connecting_state){ 6271 case LE_CONNECTING_DIRECT: 6272 case LE_CONNECTING_WHITELIST: 6273 // stop connecting if: 6274 // - connecting uses white and whitelist modification pending 6275 // - if it got disabled 6276 // - resolving list modified 6277 // - own address changes 6278 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6279 if ((connecting_with_whitelist && whitelist_modification_pending) || 6280 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6281 resolving_list_modification_pending || 6282 random_address_change) { 6283 6284 connecting_stop = true; 6285 } 6286 break; 6287 default: 6288 break; 6289 } 6290 6291 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6292 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6293 // periodic sync control 6294 bool sync_with_advertiser_list; 6295 switch(hci_stack->le_periodic_sync_state){ 6296 case LE_CONNECTING_DIRECT: 6297 case LE_CONNECTING_WHITELIST: 6298 // stop sync if: 6299 // - sync with advertiser list and advertiser list modification pending 6300 // - if it got disabled 6301 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6302 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6303 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6304 periodic_sync_stop = true; 6305 } 6306 break; 6307 default: 6308 break; 6309 } 6310 #endif 6311 #endif 6312 6313 #endif /* ENABLE_LE_CENTRAL */ 6314 6315 #ifdef ENABLE_LE_PERIPHERAL 6316 // le advertisement control 6317 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6318 // stop if: 6319 // - parameter change required 6320 // - random address used in advertising and changes 6321 // - it's disabled 6322 // - whitelist change required but used for advertisement filter policy 6323 // - resolving list modified 6324 // - own address changes 6325 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6326 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6327 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6328 if (advertising_change || 6329 (advertising_uses_random_address && random_address_change) || 6330 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6331 (advertising_uses_whitelist && whitelist_modification_pending) || 6332 resolving_list_modification_pending || 6333 random_address_change) { 6334 6335 advertising_stop = true; 6336 } 6337 } 6338 6339 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6340 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6341 btstack_linked_list_iterator_t it; 6342 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6343 while (btstack_linked_list_iterator_has_next(&it)){ 6344 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6345 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6346 // stop if: 6347 // - parameter change required 6348 // - random address used in connectable advertising and changes 6349 // - it's disabled 6350 // - whitelist change required but used for advertisement filter policy 6351 // - resolving list modified 6352 // - own address changes 6353 // - advertisement set will be removed 6354 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6355 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6356 bool advertising_uses_random_address = 6357 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6358 advertising_connectable; 6359 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6360 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6361 bool advertising_set_random_address_change = 6362 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6363 bool advertising_set_will_be_removed = 6364 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6365 if (advertising_parameter_change || 6366 (advertising_uses_random_address && advertising_set_random_address_change) || 6367 (advertising_enabled == false) || 6368 (advertising_uses_whitelist && whitelist_modification_pending) || 6369 resolving_list_modification_pending || 6370 advertising_set_will_be_removed) { 6371 6372 advertising_stop = true; 6373 advertising_stop_set = advertising_set; 6374 break; 6375 } 6376 } 6377 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6378 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6379 // stop if: 6380 // - it's disabled 6381 // - parameter change required 6382 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6383 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6384 if ((periodic_enabled == false) || periodic_parameter_change){ 6385 periodic_advertising_stop = true; 6386 advertising_stop_set = advertising_set; 6387 } 6388 } 6389 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6390 } 6391 } 6392 #endif 6393 6394 #endif 6395 6396 6397 // Phase 2: stop everything that should be off during modifications 6398 6399 6400 // 2.1 Outgoing connection 6401 #ifdef ENABLE_LE_CENTRAL 6402 if (connecting_stop){ 6403 hci_send_cmd(&hci_le_create_connection_cancel); 6404 return true; 6405 } 6406 #endif 6407 6408 // 2.2 Scanning 6409 #ifdef ENABLE_LE_CENTRAL 6410 if (scanning_stop){ 6411 hci_stack->le_scanning_active = false; 6412 hci_le_scan_stop(); 6413 return true; 6414 } 6415 6416 // 2.3 Periodic Sync 6417 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6418 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6419 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6420 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6421 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6422 return true; 6423 } 6424 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6425 if (periodic_sync_stop){ 6426 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6427 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6428 return true; 6429 } 6430 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6431 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6432 #endif /* ENABLE_LE_CENTRAL */ 6433 6434 // 2.4 Advertising: legacy, extended, periodic 6435 #ifdef ENABLE_LE_PERIPHERAL 6436 if (advertising_stop){ 6437 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6438 if (hci_le_extended_advertising_supported()) { 6439 uint8_t advertising_stop_handle; 6440 if (advertising_stop_set != NULL){ 6441 advertising_stop_handle = advertising_stop_set->advertising_handle; 6442 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6443 } else { 6444 advertising_stop_handle = 0; 6445 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6446 } 6447 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6448 const uint16_t durations[] = { 0 }; 6449 const uint16_t max_events[] = { 0 }; 6450 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6451 } else 6452 #endif 6453 { 6454 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6455 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6456 } 6457 return true; 6458 } 6459 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6460 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6461 if (periodic_advertising_stop){ 6462 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6463 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6464 return true; 6465 } 6466 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6467 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6468 #endif /* ENABLE_LE_PERIPHERAL */ 6469 6470 6471 // Phase 3: modify 6472 6473 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6474 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6475 // GAP Privacy, notify clients upon upcoming random address change 6476 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6477 // notify might cause hci_run to get executed, check if we still can send 6478 gap_privacy_clients_notify(hci_stack->le_random_address); 6479 if (!hci_can_send_command_packet_now()) { 6480 return true; 6481 } 6482 } 6483 6484 // - wait until privacy update completed 6485 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6486 return false; 6487 } 6488 6489 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6490 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6491 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6492 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6493 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6494 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6495 #endif 6496 return true; 6497 } 6498 6499 #ifdef ENABLE_LE_CENTRAL 6500 if (hci_stack->le_scanning_param_update){ 6501 hci_stack->le_scanning_param_update = false; 6502 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6503 if (hci_le_extended_advertising_supported()){ 6504 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6505 uint8_t scan_types[2]; 6506 uint16_t scan_intervals[2]; 6507 uint16_t scan_windows[2]; 6508 6509 uint8_t i; 6510 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6511 for (i=0;i<num_phys;i++){ 6512 scan_types[i] = hci_stack->le_scan_type; 6513 scan_intervals[i] = hci_stack->le_scan_interval; 6514 scan_windows[i] = hci_stack->le_scan_window; 6515 } 6516 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6517 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6518 } else 6519 #endif 6520 { 6521 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6522 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6523 } 6524 return true; 6525 } 6526 #endif 6527 6528 #ifdef ENABLE_LE_PERIPHERAL 6529 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6530 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6531 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6532 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6533 if (hci_le_extended_advertising_supported()){ 6534 // map advertisment type to advertising event properties 6535 uint16_t adv_event_properties = 0; 6536 // 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000 6537 const uint16_t mapping[] = { 0x13, 0x15, 0x1D, 0x12, 0x10 }; 6538 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6539 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6540 } 6541 hci_stack->le_advertising_set_in_current_command = 0; 6542 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6543 0, 6544 adv_event_properties, 6545 hci_stack->le_advertisements_interval_min, 6546 hci_stack->le_advertisements_interval_max, 6547 hci_stack->le_advertisements_channel_map, 6548 hci_stack->le_advertisements_own_addr_type, 6549 hci_stack->le_advertisements_direct_address_type, 6550 hci_stack->le_advertisements_direct_address, 6551 hci_stack->le_advertisements_filter_policy, 6552 0x7f, // tx power: no preference 6553 0x01, // primary adv phy: LE 1M 6554 0, // secondary adv max skip 6555 0x01, // secondary adv phy 6556 0, // adv sid 6557 0 // scan request notification 6558 ); 6559 } else 6560 #endif 6561 { 6562 hci_send_cmd(&hci_le_set_advertising_parameters, 6563 hci_stack->le_advertisements_interval_min, 6564 hci_stack->le_advertisements_interval_max, 6565 hci_stack->le_advertisements_type, 6566 hci_stack->le_advertisements_own_addr_type, 6567 hci_stack->le_advertisements_direct_address_type, 6568 hci_stack->le_advertisements_direct_address, 6569 hci_stack->le_advertisements_channel_map, 6570 hci_stack->le_advertisements_filter_policy); 6571 } 6572 return true; 6573 } 6574 6575 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6576 // assumption: only set if extended advertising is supported 6577 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6578 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6579 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6580 return true; 6581 } 6582 #endif 6583 6584 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6585 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6586 uint8_t adv_data_clean[31]; 6587 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6588 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6589 hci_stack->le_advertisements_data_len); 6590 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6591 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6592 if (hci_le_extended_advertising_supported()){ 6593 hci_stack->le_advertising_set_in_current_command = 0; 6594 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6595 } else 6596 #endif 6597 { 6598 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6599 } 6600 return true; 6601 } 6602 6603 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6604 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6605 uint8_t scan_data_clean[31]; 6606 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6607 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6608 hci_stack->le_scan_response_data_len); 6609 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6610 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6611 if (hci_le_extended_advertising_supported()){ 6612 hci_stack->le_advertising_set_in_current_command = 0; 6613 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6614 } else 6615 #endif 6616 { 6617 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6618 } 6619 return true; 6620 } 6621 6622 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6623 if (hci_le_extended_advertising_supported()) { 6624 btstack_linked_list_iterator_t it; 6625 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6626 while (btstack_linked_list_iterator_has_next(&it)){ 6627 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6628 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6629 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6630 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6631 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6632 return true; 6633 } 6634 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6635 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6636 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6637 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6638 advertising_set->advertising_handle, 6639 advertising_set->extended_params.advertising_event_properties, 6640 advertising_set->extended_params.primary_advertising_interval_min, 6641 advertising_set->extended_params.primary_advertising_interval_max, 6642 advertising_set->extended_params.primary_advertising_channel_map, 6643 advertising_set->extended_params.own_address_type, 6644 advertising_set->extended_params.peer_address_type, 6645 advertising_set->extended_params.peer_address, 6646 advertising_set->extended_params.advertising_filter_policy, 6647 advertising_set->extended_params.advertising_tx_power, 6648 advertising_set->extended_params.primary_advertising_phy, 6649 advertising_set->extended_params.secondary_advertising_max_skip, 6650 advertising_set->extended_params.secondary_advertising_phy, 6651 advertising_set->extended_params.advertising_sid, 6652 advertising_set->extended_params.scan_request_notification_enable 6653 ); 6654 return true; 6655 } 6656 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6657 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6658 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6659 return true; 6660 } 6661 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6662 uint16_t pos = advertising_set->adv_data_pos; 6663 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6664 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6665 if ((operation & 0x02) != 0){ 6666 // last fragment or complete data 6667 operation |= 2; 6668 advertising_set->adv_data_pos = 0; 6669 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6670 } else { 6671 advertising_set->adv_data_pos += data_to_upload; 6672 } 6673 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6674 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6675 return true; 6676 } 6677 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6678 uint16_t pos = advertising_set->scan_data_pos; 6679 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6680 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6681 if ((operation & 0x02) != 0){ 6682 advertising_set->scan_data_pos = 0; 6683 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6684 } else { 6685 advertising_set->scan_data_pos += data_to_upload; 6686 } 6687 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6688 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6689 return true; 6690 } 6691 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6692 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6693 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6694 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6695 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6696 advertising_set->advertising_handle, 6697 advertising_set->periodic_params.periodic_advertising_interval_min, 6698 advertising_set->periodic_params.periodic_advertising_interval_max, 6699 advertising_set->periodic_params.periodic_advertising_properties); 6700 return true; 6701 } 6702 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6703 uint16_t pos = advertising_set->periodic_data_pos; 6704 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6705 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6706 if ((operation & 0x02) != 0){ 6707 // last fragment or complete data 6708 operation |= 2; 6709 advertising_set->periodic_data_pos = 0; 6710 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6711 } else { 6712 advertising_set->periodic_data_pos += data_to_upload; 6713 } 6714 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6715 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6716 return true; 6717 } 6718 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6719 } 6720 } 6721 #endif 6722 6723 #endif 6724 6725 #ifdef ENABLE_LE_CENTRAL 6726 // if connect with whitelist was active and is not cancelled yet, wait until next time 6727 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6728 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6729 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6730 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6731 #endif 6732 #endif 6733 6734 // LE Whitelist Management 6735 if (whitelist_modification_pending){ 6736 bool done = hci_whitelist_modification_process(); 6737 if (done) return true; 6738 } 6739 6740 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6741 // LE Resolving List Management 6742 if (resolving_list_modification_pending) { 6743 uint16_t i; 6744 uint8_t null_16[16]; 6745 uint8_t local_irk_flipped[16]; 6746 const uint8_t *local_irk; 6747 switch (hci_stack->le_resolving_list_state) { 6748 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6749 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6750 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6751 return true; 6752 case LE_RESOLVING_LIST_READ_SIZE: 6753 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6754 hci_send_cmd(&hci_le_read_resolving_list_size); 6755 return true; 6756 case LE_RESOLVING_LIST_SEND_CLEAR: 6757 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6758 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6759 sizeof(hci_stack->le_resolving_list_add_entries)); 6760 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6761 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6762 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6763 sizeof(hci_stack->le_resolving_list_remove_entries)); 6764 hci_send_cmd(&hci_le_clear_resolving_list); 6765 return true; 6766 case LE_RESOLVING_LIST_SET_IRK: 6767 // set IRK used by RPA for undirected advertising 6768 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6769 local_irk = gap_get_persistent_irk(); 6770 reverse_128(local_irk, local_irk_flipped); 6771 memset(null_16, 0, sizeof(null_16)); 6772 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6773 null_16, local_irk_flipped); 6774 return true; 6775 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6776 // first remove old entries 6777 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6778 uint8_t offset = i >> 3; 6779 uint8_t mask = 1 << (i & 7); 6780 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6781 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6782 bd_addr_t peer_identity_addreses; 6783 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6784 sm_key_t peer_irk; 6785 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6786 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6787 6788 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6789 // trigger whitelist entry 'update' (work around for controller bug) 6790 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6791 while (btstack_linked_list_iterator_has_next(&lit)) { 6792 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6793 if (entry->address_type != peer_identity_addr_type) continue; 6794 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6795 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6796 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6797 } 6798 #endif 6799 6800 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6801 peer_identity_addreses); 6802 return true; 6803 } 6804 6805 // then add new entries 6806 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6807 uint8_t offset = i >> 3; 6808 uint8_t mask = 1 << (i & 7); 6809 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6810 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6811 bd_addr_t peer_identity_addreses; 6812 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6813 sm_key_t peer_irk; 6814 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6815 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6816 if (btstack_is_null(peer_irk, 16)) continue; 6817 local_irk = gap_get_persistent_irk(); 6818 // command uses format specifier 'P' that stores 16-byte value without flip 6819 uint8_t peer_irk_flipped[16]; 6820 reverse_128(local_irk, local_irk_flipped); 6821 reverse_128(peer_irk, peer_irk_flipped); 6822 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6823 peer_irk_flipped, local_irk_flipped); 6824 return true; 6825 } 6826 6827 // finally, set privacy mode 6828 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6829 uint8_t offset = i >> 3; 6830 uint8_t mask = 1 << (i & 7); 6831 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6832 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6833 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6834 // Network Privacy Mode is default 6835 continue; 6836 } 6837 bd_addr_t peer_identity_address; 6838 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6839 sm_key_t peer_irk; 6840 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6841 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6842 if (btstack_is_null(peer_irk, 16)) continue; 6843 // command uses format specifier 'P' that stores 16-byte value without flip 6844 uint8_t peer_irk_flipped[16]; 6845 reverse_128(peer_irk, peer_irk_flipped); 6846 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6847 return true; 6848 } 6849 break; 6850 6851 default: 6852 break; 6853 } 6854 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6855 } 6856 #endif 6857 6858 #ifdef ENABLE_LE_CENTRAL 6859 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6860 // LE Whitelist Management 6861 if (periodic_list_modification_pending){ 6862 // add/remove entries 6863 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6864 while (btstack_linked_list_iterator_has_next(&lit)){ 6865 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6866 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6867 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6868 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6869 return true; 6870 } 6871 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6872 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6873 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6874 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6875 return true; 6876 } 6877 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6878 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6879 btstack_memory_periodic_advertiser_list_entry_free(entry); 6880 } 6881 } 6882 } 6883 #endif 6884 #endif 6885 6886 #ifdef ENABLE_LE_CENTRAL 6887 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6888 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6889 if (hci_stack->le_past_set_default_params){ 6890 hci_stack->le_past_set_default_params = false; 6891 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6892 hci_stack->le_past_mode, 6893 hci_stack->le_past_skip, 6894 hci_stack->le_past_sync_timeout, 6895 hci_stack->le_past_cte_type); 6896 return true; 6897 } 6898 #endif 6899 #endif 6900 #endif 6901 6902 // postpone all actions until stack is fully working 6903 if (hci_stack->state != HCI_STATE_WORKING) return false; 6904 6905 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6906 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6907 6908 // Phase 4: restore state 6909 6910 #ifdef ENABLE_LE_CENTRAL 6911 // re-start scanning 6912 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6913 hci_stack->le_scanning_active = true; 6914 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6915 if (hci_le_extended_advertising_supported()){ 6916 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6917 } else 6918 #endif 6919 { 6920 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6921 } 6922 return true; 6923 } 6924 #endif 6925 6926 #ifdef ENABLE_LE_CENTRAL 6927 // re-start connecting 6928 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6929 bd_addr_t null_addr; 6930 memset(null_addr, 0, 6); 6931 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6932 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6933 hci_send_le_create_connection(1, 0, null_addr); 6934 return true; 6935 } 6936 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6937 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6938 switch(hci_stack->le_periodic_sync_request){ 6939 case LE_CONNECTING_DIRECT: 6940 case LE_CONNECTING_WHITELIST: 6941 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6942 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6943 hci_stack->le_periodic_sync_options, 6944 hci_stack->le_periodic_sync_advertising_sid, 6945 hci_stack->le_periodic_sync_advertiser_address_type, 6946 hci_stack->le_periodic_sync_advertiser_address, 6947 hci_stack->le_periodic_sync_skip, 6948 hci_stack->le_periodic_sync_timeout, 6949 hci_stack->le_periodic_sync_cte_type); 6950 return true; 6951 default: 6952 break; 6953 } 6954 } 6955 #endif 6956 #endif 6957 6958 #ifdef ENABLE_LE_PERIPHERAL 6959 // re-start advertising 6960 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6961 // check if advertisements should be enabled given 6962 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6963 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6964 6965 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6966 if (hci_le_extended_advertising_supported()){ 6967 const uint8_t advertising_handles[] = { 0 }; 6968 const uint16_t durations[] = { 0 }; 6969 const uint16_t max_events[] = { 0 }; 6970 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6971 } else 6972 #endif 6973 { 6974 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6975 } 6976 return true; 6977 } 6978 6979 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6980 if (hci_le_extended_advertising_supported()) { 6981 btstack_linked_list_iterator_t it; 6982 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6983 while (btstack_linked_list_iterator_has_next(&it)) { 6984 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6985 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6986 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6987 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6988 const uint16_t durations[] = { advertising_set->enable_timeout }; 6989 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6990 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6991 return true; 6992 } 6993 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6994 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6995 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6996 uint8_t enable = 1; 6997 if (advertising_set->periodic_include_adi){ 6998 enable |= 2; 6999 } 7000 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 7001 return true; 7002 } 7003 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7004 } 7005 } 7006 #endif 7007 #endif 7008 7009 return false; 7010 } 7011 7012 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7013 static bool hci_run_iso_tasks(void){ 7014 btstack_linked_list_iterator_t it; 7015 7016 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 7017 return false; 7018 } 7019 7020 // BIG 7021 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 7022 while (btstack_linked_list_iterator_has_next(&it)){ 7023 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 7024 switch (big->state){ 7025 case LE_AUDIO_BIG_STATE_CREATE: 7026 hci_stack->iso_active_operation_group_id = big->params->big_handle; 7027 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7028 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7029 hci_send_cmd(&hci_le_create_big, 7030 big->params->big_handle, 7031 big->params->advertising_handle, 7032 big->params->num_bis, 7033 big->params->sdu_interval_us, 7034 big->params->max_sdu, 7035 big->params->max_transport_latency_ms, 7036 big->params->rtn, 7037 big->params->phy, 7038 big->params->packing, 7039 big->params->framing, 7040 big->params->encryption, 7041 big->params->broadcast_code); 7042 return true; 7043 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7044 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7045 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7046 return true; 7047 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7048 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7049 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 7050 return true; 7051 case LE_AUDIO_BIG_STATE_TERMINATE: 7052 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7053 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7054 return true; 7055 default: 7056 break; 7057 } 7058 } 7059 7060 // BIG Sync 7061 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 7062 while (btstack_linked_list_iterator_has_next(&it)){ 7063 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 7064 switch (big_sync->state){ 7065 case LE_AUDIO_BIG_STATE_CREATE: 7066 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 7067 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7068 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7069 hci_send_cmd(&hci_le_big_create_sync, 7070 big_sync->params->big_handle, 7071 big_sync->params->sync_handle, 7072 big_sync->params->encryption, 7073 big_sync->params->broadcast_code, 7074 big_sync->params->mse, 7075 big_sync->params->big_sync_timeout_10ms, 7076 big_sync->params->num_bis, 7077 big_sync->params->bis_indices); 7078 return true; 7079 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7080 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7081 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7082 return true; 7083 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7084 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7085 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7086 return true; 7087 case LE_AUDIO_BIG_STATE_TERMINATE: 7088 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7089 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7090 return true; 7091 default: 7092 break; 7093 } 7094 } 7095 7096 // CIG 7097 bool cig_active; 7098 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7099 while (btstack_linked_list_iterator_has_next(&it)) { 7100 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7101 uint8_t i; 7102 // Set CIG Parameters 7103 uint8_t cis_id[MAX_NR_CIS]; 7104 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7105 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7106 uint8_t phy_c_to_p[MAX_NR_CIS]; 7107 uint8_t phy_p_to_c[MAX_NR_CIS]; 7108 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7109 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7110 switch (cig->state) { 7111 case LE_AUDIO_CIG_STATE_CREATE: 7112 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7113 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7114 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7115 le_audio_cig_params_t * params = cig->params; 7116 for (i = 0; i < params->num_cis; i++) { 7117 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7118 cis_id[i] = cis_params->cis_id; 7119 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7120 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7121 phy_c_to_p[i] = cis_params->phy_c_to_p; 7122 phy_p_to_c[i] = cis_params->phy_p_to_c; 7123 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7124 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7125 } 7126 hci_send_cmd(&hci_le_set_cig_parameters, 7127 cig->cig_id, 7128 params->sdu_interval_c_to_p, 7129 params->sdu_interval_p_to_c, 7130 params->worst_case_sca, 7131 params->packing, 7132 params->framing, 7133 params->max_transport_latency_c_to_p, 7134 params->max_transport_latency_p_to_c, 7135 params->num_cis, 7136 cis_id, 7137 max_sdu_c_to_p, 7138 max_sdu_p_to_c, 7139 phy_c_to_p, 7140 phy_p_to_c, 7141 rtn_c_to_p, 7142 rtn_p_to_c 7143 ); 7144 return true; 7145 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7146 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7147 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7148 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7149 for (i=0;i<cig->num_cis;i++){ 7150 cig->cis_setup_active[i] = true; 7151 } 7152 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7153 return true; 7154 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7155 for ( ; cig->state_vars.next_cis < (cig->num_cis * 2) ; cig->state_vars.next_cis++ ){ 7156 // find next path to setup 7157 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7158 if (cig->cis_established[cis_index] == false) { 7159 continue; 7160 } 7161 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7162 bool setup = true; 7163 if (cis_direction == 0){ 7164 // 0 - input - host to controller 7165 // we are central => central to peripheral 7166 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7167 } else { 7168 // 1 - output - controller to host 7169 // we are central => peripheral to central 7170 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7171 } 7172 if (setup){ 7173 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7174 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7175 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7176 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7177 return true; 7178 } 7179 } 7180 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7181 break; 7182 case LE_AUDIO_CIG_STATE_REMOVE: 7183 // check if CIG Active 7184 cig_active = false; 7185 for (i = 0; i < cig->num_cis; i++) { 7186 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7187 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7188 if (stream != NULL){ 7189 cig_active = true; 7190 break; 7191 } 7192 } 7193 } 7194 if (cig_active == false){ 7195 btstack_linked_list_iterator_remove(&it); 7196 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7197 return true; 7198 } 7199 default: 7200 break; 7201 } 7202 } 7203 7204 // CIS Accept/Reject/Setup ISO Path/Close 7205 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7206 while (btstack_linked_list_iterator_has_next(&it)) { 7207 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7208 hci_con_handle_t con_handle; 7209 switch (iso_stream->state){ 7210 case HCI_ISO_STREAM_W2_ACCEPT: 7211 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7212 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7213 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7214 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7215 return true; 7216 case HCI_ISO_STREAM_W2_REJECT: 7217 con_handle = iso_stream->cis_handle; 7218 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7219 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7220 hci_iso_stream_finalize(iso_stream); 7221 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7222 return true; 7223 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7224 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7225 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7226 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7227 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7228 return true; 7229 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7230 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7231 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7232 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7233 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7234 return true; 7235 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7236 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7237 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7238 return true; 7239 default: 7240 break; 7241 } 7242 } 7243 7244 return false; 7245 } 7246 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7247 #endif 7248 7249 static bool hci_run_general_pending_commands(void){ 7250 btstack_linked_item_t * it; 7251 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7252 hci_connection_t * connection = (hci_connection_t *) it; 7253 7254 switch(connection->state){ 7255 case SEND_CREATE_CONNECTION: 7256 switch(connection->address_type){ 7257 #ifdef ENABLE_CLASSIC 7258 case BD_ADDR_TYPE_ACL: 7259 log_info("sending hci_create_connection"); 7260 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7261 break; 7262 #endif 7263 default: 7264 #ifdef ENABLE_BLE 7265 #ifdef ENABLE_LE_CENTRAL 7266 log_info("sending hci_le_create_connection"); 7267 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7268 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7269 hci_send_le_create_connection(0, connection->address_type, connection->address); 7270 connection->state = SENT_CREATE_CONNECTION; 7271 #endif 7272 #endif 7273 break; 7274 } 7275 return true; 7276 7277 #ifdef ENABLE_CLASSIC 7278 case RECEIVED_CONNECTION_REQUEST: 7279 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7280 log_info("sending hci_accept_connection_request"); 7281 connection->state = ACCEPTED_CONNECTION_REQUEST; 7282 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7283 return true; 7284 } 7285 break; 7286 #endif 7287 case SEND_DISCONNECT: 7288 connection->state = SENT_DISCONNECT; 7289 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7290 return true; 7291 7292 default: 7293 break; 7294 } 7295 7296 // no further commands if connection is about to get shut down 7297 if (connection->state == SENT_DISCONNECT) continue; 7298 7299 #ifdef ENABLE_CLASSIC 7300 7301 // Handling link key request requires remote supported features 7302 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7303 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7304 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7305 7306 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7307 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7308 if (have_link_key && security_level_sufficient){ 7309 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7310 } else { 7311 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7312 } 7313 return true; 7314 } 7315 7316 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7317 log_info("denying to pin request"); 7318 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7319 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7320 return true; 7321 } 7322 7323 // security assessment requires remote features 7324 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7325 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7326 hci_ssp_assess_security_on_io_cap_request(connection); 7327 // no return here as hci_ssp_assess_security_on_io_cap_request only sets AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY or AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY 7328 } 7329 7330 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7331 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7332 // set authentication requirements: 7333 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7334 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7335 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7336 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7337 authreq |= 1; 7338 } 7339 bool bonding = hci_stack->bondable; 7340 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7341 // if we have received IO Cap Response, we're in responder role 7342 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7343 if (bonding && !remote_bonding){ 7344 log_info("Remote not bonding, dropping local flag"); 7345 bonding = false; 7346 } 7347 } 7348 if (bonding){ 7349 if (connection->bonding_flags & BONDING_DEDICATED){ 7350 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7351 } else { 7352 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7353 } 7354 } 7355 uint8_t have_oob_data = 0; 7356 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7357 if (connection->classic_oob_c_192 != NULL){ 7358 have_oob_data |= 1; 7359 } 7360 if (connection->classic_oob_c_256 != NULL){ 7361 have_oob_data |= 2; 7362 } 7363 #endif 7364 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7365 return true; 7366 } 7367 7368 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7369 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7370 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7371 return true; 7372 } 7373 7374 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7375 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7376 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7377 const uint8_t zero[16] = { 0 }; 7378 const uint8_t * r_192 = zero; 7379 const uint8_t * c_192 = zero; 7380 const uint8_t * r_256 = zero; 7381 const uint8_t * c_256 = zero; 7382 // verify P-256 OOB 7383 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7384 c_256 = connection->classic_oob_c_256; 7385 if (connection->classic_oob_r_256 != NULL) { 7386 r_256 = connection->classic_oob_r_256; 7387 } 7388 } 7389 // verify P-192 OOB 7390 if ((connection->classic_oob_c_192 != NULL)) { 7391 c_192 = connection->classic_oob_c_192; 7392 if (connection->classic_oob_r_192 != NULL) { 7393 r_192 = connection->classic_oob_r_192; 7394 } 7395 } 7396 7397 // assess security 7398 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7399 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7400 if (need_level_4 && !can_reach_level_4){ 7401 log_info("Level 4 required, but not possible -> abort"); 7402 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7403 // send oob negative reply 7404 c_256 = NULL; 7405 c_192 = NULL; 7406 } 7407 7408 // Reply 7409 if (c_256 != zero) { 7410 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7411 } else if (c_192 != zero){ 7412 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7413 } else { 7414 hci_stack->classic_oob_con_handle = connection->con_handle; 7415 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7416 } 7417 return true; 7418 } 7419 #endif 7420 7421 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7422 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7423 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7424 return true; 7425 } 7426 7427 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7428 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7429 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7430 return true; 7431 } 7432 7433 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7434 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7435 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7436 return true; 7437 } 7438 7439 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7440 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7441 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7442 connection->state = SENT_DISCONNECT; 7443 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7444 return true; 7445 } 7446 7447 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7448 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7449 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7450 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7451 return true; 7452 } 7453 7454 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7455 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7456 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7457 return true; 7458 } 7459 7460 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7461 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7462 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7463 return true; 7464 } 7465 7466 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7467 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7468 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7469 return true; 7470 } 7471 7472 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7473 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7474 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7475 return true; 7476 } 7477 7478 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7479 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7480 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7481 return true; 7482 } 7483 #endif 7484 7485 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7486 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7487 #ifdef ENABLE_CLASSIC 7488 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7489 #endif 7490 if (connection->state != SENT_DISCONNECT){ 7491 connection->state = SENT_DISCONNECT; 7492 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7493 return true; 7494 } 7495 } 7496 7497 #ifdef ENABLE_CLASSIC 7498 uint16_t sniff_min_interval; 7499 switch (connection->sniff_min_interval){ 7500 case 0: 7501 break; 7502 case 0xffff: 7503 connection->sniff_min_interval = 0; 7504 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7505 return true; 7506 default: 7507 sniff_min_interval = connection->sniff_min_interval; 7508 connection->sniff_min_interval = 0; 7509 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7510 return true; 7511 } 7512 7513 if (connection->sniff_subrating_max_latency != 0xffff){ 7514 uint16_t max_latency = connection->sniff_subrating_max_latency; 7515 connection->sniff_subrating_max_latency = 0; 7516 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7517 return true; 7518 } 7519 7520 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7521 uint8_t service_type = (uint8_t) connection->qos_service_type; 7522 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7523 hci_send_cmd(&hci_qos_setup, connection->con_handle, 0, service_type, connection->qos_token_rate, connection->qos_peak_bandwidth, connection->qos_latency, connection->qos_delay_variation); 7524 return true; 7525 } 7526 7527 if (connection->request_role != HCI_ROLE_INVALID){ 7528 hci_role_t role = connection->request_role; 7529 connection->request_role = HCI_ROLE_INVALID; 7530 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7531 return true; 7532 } 7533 #endif 7534 7535 if (connection->gap_connection_tasks != 0){ 7536 #ifdef ENABLE_CLASSIC 7537 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7538 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7539 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7540 return true; 7541 } 7542 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7543 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7544 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7545 return true; 7546 } 7547 #endif 7548 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7549 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7550 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7551 return true; 7552 } 7553 #ifdef ENABLE_BLE 7554 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7555 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7556 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7557 return true; 7558 } 7559 #endif 7560 } 7561 7562 #ifdef ENABLE_BLE 7563 switch (connection->le_con_parameter_update_state){ 7564 // response to L2CAP CON PARAMETER UPDATE REQUEST 7565 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7566 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7567 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7568 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7569 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7570 return true; 7571 case CON_PARAMETER_UPDATE_REPLY: 7572 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7573 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7574 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7575 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7576 return true; 7577 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7578 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7579 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7580 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7581 return true; 7582 default: 7583 break; 7584 } 7585 if (connection->le_phy_update_all_phys != 0xffu){ 7586 uint8_t all_phys = connection->le_phy_update_all_phys; 7587 connection->le_phy_update_all_phys = 0xff; 7588 hci_send_cmd(&hci_le_set_phy, connection->con_handle, all_phys, connection->le_phy_update_tx_phys, connection->le_phy_update_rx_phys, connection->le_phy_update_phy_options); 7589 return true; 7590 } 7591 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7592 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7593 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7594 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7595 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7596 return true; 7597 } 7598 if (connection->le_past_advertising_handle != 0xff){ 7599 uint8_t advertising_handle = connection->le_past_advertising_handle; 7600 connection->le_past_advertising_handle = 0xff; 7601 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7602 return true; 7603 } 7604 #endif 7605 #endif 7606 } 7607 return false; 7608 } 7609 7610 static void hci_run(void){ 7611 7612 // stack state sub statemachines 7613 switch (hci_stack->state) { 7614 case HCI_STATE_INITIALIZING: 7615 hci_initializing_run(); 7616 break; 7617 case HCI_STATE_HALTING: 7618 hci_halting_run(); 7619 break; 7620 case HCI_STATE_FALLING_ASLEEP: 7621 hci_falling_asleep_run(); 7622 break; 7623 default: 7624 break; 7625 } 7626 7627 // allow to run after initialization to working transition 7628 if (hci_stack->state != HCI_STATE_WORKING){ 7629 return; 7630 } 7631 7632 bool done; 7633 7634 // send continuation fragments first, as they block the prepared packet buffer 7635 done = hci_run_acl_fragments(); 7636 if (done) return; 7637 7638 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7639 done = hci_run_iso_fragments(); 7640 if (done) return; 7641 #endif 7642 7643 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7644 // send host num completed packets next as they don't require num_cmd_packets > 0 7645 if (!hci_can_send_command_packet_transport()) return; 7646 if (hci_stack->host_completed_packets){ 7647 hci_host_num_completed_packets(); 7648 return; 7649 } 7650 #endif 7651 7652 if (!hci_can_send_command_packet_now()) return; 7653 7654 // global/non-connection oriented commands 7655 7656 7657 #ifdef ENABLE_CLASSIC 7658 // general gap classic 7659 done = hci_run_general_gap_classic(); 7660 if (done) return; 7661 #endif 7662 7663 #ifdef ENABLE_BLE 7664 // general gap le 7665 done = hci_run_general_gap_le(); 7666 if (done) return; 7667 7668 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7669 // ISO related tasks, e.g. BIG create/terminate/sync 7670 done = hci_run_iso_tasks(); 7671 if (done) return; 7672 #endif 7673 #endif 7674 7675 // send pending HCI commands 7676 hci_run_general_pending_commands(); 7677 } 7678 7679 #ifdef ENABLE_CLASSIC 7680 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7681 // bits 6-9 are 'don't use' 7682 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7683 7684 // restrict packet types to local and remote supported 7685 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7686 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7687 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7688 } 7689 #endif 7690 7691 // funnel for sending cmd packet using single outgoing buffer 7692 static uint8_t hci_send_prepared_cmd_packet(void) { 7693 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7694 // cache opcode 7695 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7696 // get size 7697 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7698 // send packet 7699 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7700 // release packet buffer on error or for synchronous transport implementations 7701 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7702 hci_release_packet_buffer(); 7703 } 7704 return status; 7705 } 7706 7707 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7708 // house-keeping 7709 7710 #ifdef ENABLE_CLASSIC 7711 bd_addr_t addr; 7712 hci_connection_t * conn; 7713 #endif 7714 #ifdef ENABLE_LE_CENTRAL 7715 uint8_t initiator_filter_policy; 7716 #endif 7717 7718 uint16_t opcode = little_endian_read_16(packet, 0); 7719 switch (opcode) { 7720 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7721 hci_stack->loopback_mode = packet[3]; 7722 break; 7723 7724 #ifdef ENABLE_CLASSIC 7725 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7726 reverse_bd_addr(&packet[3], addr); 7727 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7728 7729 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7730 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7731 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7732 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7733 } 7734 7735 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7736 if (!conn) { 7737 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7738 if (!conn) { 7739 // notify client that alloc failed 7740 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7741 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7742 } 7743 conn->state = SEND_CREATE_CONNECTION; 7744 } 7745 7746 log_info("conn state %u", conn->state); 7747 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7748 switch (conn->state) { 7749 // if connection active exists 7750 case OPEN: 7751 // and OPEN, emit connection complete command 7752 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7753 // packet not sent to controller 7754 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7755 case RECEIVED_DISCONNECTION_COMPLETE: 7756 // create connection triggered in disconnect complete event, let's do it now 7757 break; 7758 case SEND_CREATE_CONNECTION: 7759 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7760 if (hci_classic_operation_active()){ 7761 return ERROR_CODE_SUCCESS; 7762 } 7763 #endif 7764 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7765 break; 7766 default: 7767 // otherwise, just ignore as it is already in the open process 7768 // packet not sent to controller 7769 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7770 } 7771 conn->state = SENT_CREATE_CONNECTION; 7772 7773 // track outgoing connection 7774 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7775 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7776 break; 7777 7778 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7779 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7780 if (conn == NULL) { 7781 // neither SCO nor ACL connection for con handle 7782 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7783 } else { 7784 uint16_t remote_supported_sco_packets; 7785 switch (conn->address_type){ 7786 case BD_ADDR_TYPE_ACL: 7787 // assert SCO connection does not exit 7788 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7789 return ERROR_CODE_COMMAND_DISALLOWED; 7790 } 7791 // cache remote sco packet types 7792 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7793 7794 // allocate connection struct 7795 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7796 HCI_ROLE_MASTER); 7797 if (!conn) { 7798 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7799 } 7800 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7801 break; 7802 case BD_ADDR_TYPE_SCO: 7803 // update of existing SCO connection 7804 break; 7805 default: 7806 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7807 } 7808 } 7809 7810 // conn refers to hci connection of type sco now 7811 7812 conn->state = SENT_CREATE_CONNECTION; 7813 7814 // track outgoing connection to handle command status with error 7815 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7816 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7817 7818 // setup_synchronous_connection? Voice setting at offset 22 7819 // TODO: compare to current setting if sco connection already active 7820 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7821 7822 // derive sco payload length from packet types 7823 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7824 break; 7825 7826 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7827 // get SCO connection 7828 reverse_bd_addr(&packet[3], addr); 7829 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7830 if (conn == NULL){ 7831 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7832 } 7833 7834 conn->state = ACCEPTED_CONNECTION_REQUEST; 7835 7836 // track outgoing connection to handle command status with error 7837 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7838 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7839 7840 // accept_synchronous_connection? Voice setting at offset 18 7841 // TODO: compare to current setting if sco connection already active 7842 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7843 7844 // derive sco payload length from packet types 7845 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7846 break; 7847 #endif 7848 7849 #ifdef ENABLE_BLE 7850 #ifdef ENABLE_LE_CENTRAL 7851 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7852 // white list used? 7853 initiator_filter_policy = packet[7]; 7854 switch (initiator_filter_policy) { 7855 case 0: 7856 // whitelist not used 7857 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7858 break; 7859 case 1: 7860 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7861 break; 7862 default: 7863 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7864 break; 7865 } 7866 // track outgoing connection 7867 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7868 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7869 break; 7870 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7871 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7872 // white list used? 7873 initiator_filter_policy = packet[3]; 7874 switch (initiator_filter_policy) { 7875 case 0: 7876 // whitelist not used 7877 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7878 break; 7879 case 1: 7880 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7881 break; 7882 default: 7883 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7884 break; 7885 } 7886 // track outgoing connection 7887 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7888 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7889 break; 7890 #endif 7891 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7892 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7893 break; 7894 #endif 7895 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7896 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7897 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7898 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7899 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7900 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7901 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7902 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7903 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7904 case HCI_OPCODE_HCI_LE_READ_PHY: 7905 case HCI_OPCODE_HCI_LE_SET_PHY: 7906 // conection handle is first command parameter 7907 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7908 break; 7909 #endif 7910 #endif /* ENABLE_BLE */ 7911 default: 7912 break; 7913 } 7914 7915 hci_stack->num_cmd_packets--; 7916 7917 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7918 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7919 uint8_t status; 7920 if (err == 0){ 7921 status = ERROR_CODE_SUCCESS; 7922 } else { 7923 status = ERROR_CODE_HARDWARE_FAILURE; 7924 } 7925 return status; 7926 } 7927 7928 // disconnect because of security block 7929 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7930 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7931 if (!connection) return; 7932 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7933 } 7934 7935 7936 // Configure Secure Simple Pairing 7937 7938 #ifdef ENABLE_CLASSIC 7939 7940 // enable will enable SSP during init 7941 void gap_ssp_set_enable(int enable){ 7942 hci_stack->ssp_enable = enable; 7943 } 7944 7945 static int hci_local_ssp_activated(void){ 7946 return gap_ssp_supported() && hci_stack->ssp_enable; 7947 } 7948 7949 // if set, BTstack will respond to io capability request using authentication requirement 7950 void gap_ssp_set_io_capability(int io_capability){ 7951 hci_stack->ssp_io_capability = io_capability; 7952 } 7953 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7954 hci_stack->ssp_authentication_requirement = authentication_requirement; 7955 } 7956 7957 // if set, BTstack will confirm a numeric comparison and enter '000000' if requested 7958 void gap_ssp_set_auto_accept(int auto_accept){ 7959 hci_stack->ssp_auto_accept = auto_accept; 7960 } 7961 7962 void gap_secure_connections_enable(bool enable){ 7963 hci_stack->secure_connections_enable = enable; 7964 } 7965 bool gap_secure_connections_active(void){ 7966 return hci_stack->secure_connections_active; 7967 } 7968 7969 #endif 7970 7971 // va_list part of hci_send_cmd 7972 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7973 if (!hci_can_send_command_packet_now()){ 7974 log_error("hci_send_cmd called but cannot send packet now"); 7975 return ERROR_CODE_COMMAND_DISALLOWED; 7976 } 7977 7978 hci_reserve_packet_buffer(); 7979 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7980 return hci_send_prepared_cmd_packet(); 7981 } 7982 7983 /** 7984 * pre: num_commands >= 0 - it's allowed to send a command to the controller 7985 */ 7986 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7987 va_list argptr; 7988 va_start(argptr, cmd); 7989 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7990 va_end(argptr); 7991 return status; 7992 } 7993 7994 // Forward HCI events and create non-HCI events 7995 7996 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7997 // dump packet 7998 if (dump) { 7999 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 8000 } 8001 8002 // dispatch to all event handlers 8003 btstack_linked_list_iterator_t it; 8004 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 8005 while (btstack_linked_list_iterator_has_next(&it)){ 8006 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 8007 entry->callback(HCI_EVENT_PACKET, 0, event, size); 8008 } 8009 } 8010 8011 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump){ 8012 #ifndef ENABLE_LOG_BTSTACK_EVENTS 8013 dump = 0; 8014 #endif 8015 hci_emit_event(event, size, dump); 8016 } 8017 8018 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 8019 if (!hci_stack->acl_packet_handler) return; 8020 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 8021 } 8022 8023 #ifdef ENABLE_CLASSIC 8024 static void hci_notify_if_sco_can_send_now(void){ 8025 // notify SCO sender if waiting 8026 if (!hci_stack->sco_waiting_for_can_send_now) return; 8027 if (hci_can_send_sco_packet_now()){ 8028 hci_stack->sco_waiting_for_can_send_now = 0; 8029 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 8030 hci_dump_btstack_event(event, sizeof(event)); 8031 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 8032 } 8033 } 8034 8035 // parsing end emitting has been merged to reduce code size 8036 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 8037 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 8038 8039 uint8_t * eir_data; 8040 ad_context_t context; 8041 const uint8_t * name; 8042 uint8_t name_len; 8043 8044 if (size < 3) return; 8045 8046 int event_type = hci_event_packet_get_type(packet); 8047 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 8048 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 8049 8050 switch (event_type){ 8051 case HCI_EVENT_INQUIRY_RESULT: 8052 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8053 if (size != (3 + (num_responses * 14))) return; 8054 break; 8055 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8056 if (size != 257) return; 8057 if (num_responses != 1) return; 8058 break; 8059 default: 8060 return; 8061 } 8062 8063 // event[1] is set at the end 8064 int i; 8065 for (i=0; i<num_responses;i++){ 8066 memset(event, 0, sizeof(event)); 8067 event[0] = GAP_EVENT_INQUIRY_RESULT; 8068 uint8_t event_size = 27; // if name is not set by EIR 8069 8070 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 8071 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 8072 (void)memcpy(&event[9], 8073 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 8074 3); // class of device 8075 (void)memcpy(&event[12], 8076 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 8077 2); // clock offset 8078 8079 switch (event_type){ 8080 case HCI_EVENT_INQUIRY_RESULT: 8081 // 14,15,16,17 = 0, size 18 8082 break; 8083 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8084 event[14] = 1; 8085 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8086 // 16,17 = 0, size 18 8087 break; 8088 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8089 event[14] = 1; 8090 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8091 // EIR packets only contain a single inquiry response 8092 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8093 name = NULL; 8094 // Iterate over EIR data 8095 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8096 uint8_t data_type = ad_iterator_get_data_type(&context); 8097 uint8_t data_size = ad_iterator_get_data_len(&context); 8098 const uint8_t * data = ad_iterator_get_data(&context); 8099 // Prefer Complete Local Name over Shortened Local Name 8100 switch (data_type){ 8101 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8102 if (name) continue; 8103 /* fall through */ 8104 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8105 name = data; 8106 name_len = data_size; 8107 break; 8108 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8109 if (data_size != 8) break; 8110 event[16] = 1; 8111 memcpy(&event[17], data, 8); 8112 break; 8113 default: 8114 break; 8115 } 8116 } 8117 if (name){ 8118 event[25] = 1; 8119 // truncate name if needed 8120 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8121 event[26] = len; 8122 (void)memcpy(&event[27], name, len); 8123 event_size += len; 8124 } 8125 break; 8126 default: 8127 return; 8128 } 8129 event[1] = event_size - 2; 8130 hci_emit_btstack_event(event, event_size, 1); 8131 } 8132 } 8133 #endif 8134 8135 void hci_emit_state(void){ 8136 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8137 uint8_t event[3]; 8138 event[0] = BTSTACK_EVENT_STATE; 8139 event[1] = sizeof(event) - 2u; 8140 event[2] = hci_stack->state; 8141 hci_emit_btstack_event(event, sizeof(event), 1); 8142 } 8143 8144 #ifdef ENABLE_CLASSIC 8145 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8146 uint8_t event[13]; 8147 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8148 event[1] = sizeof(event) - 2; 8149 event[2] = status; 8150 little_endian_store_16(event, 3, con_handle); 8151 reverse_bd_addr(address, &event[5]); 8152 event[11] = 1; // ACL connection 8153 event[12] = 0; // encryption disabled 8154 hci_emit_btstack_event(event, sizeof(event), 1); 8155 } 8156 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8157 if (disable_l2cap_timeouts) return; 8158 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8159 uint8_t event[4]; 8160 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8161 event[1] = sizeof(event) - 2; 8162 little_endian_store_16(event, 2, conn->con_handle); 8163 hci_emit_btstack_event(event, sizeof(event), 1); 8164 } 8165 #endif 8166 8167 #ifdef ENABLE_BLE 8168 #ifdef ENABLE_LE_CENTRAL 8169 static void hci_emit_le_connection_complete(uint8_t address_type, const bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8170 uint8_t hci_event[21]; 8171 hci_event[0] = HCI_EVENT_LE_META; 8172 hci_event[1] = sizeof(hci_event) - 2u; 8173 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8174 hci_event[3] = status; 8175 little_endian_store_16(hci_event, 4, con_handle); 8176 hci_event[6] = 0; // TODO: role 8177 hci_event[7] = address_type; 8178 reverse_bd_addr(address, &hci_event[8]); 8179 little_endian_store_16(hci_event, 14, 0); // interval 8180 little_endian_store_16(hci_event, 16, 0); // latency 8181 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8182 hci_event[20] = 0; // master clock accuracy 8183 hci_emit_btstack_event(hci_event, sizeof(hci_event), 1); 8184 // emit GAP event, too 8185 uint8_t gap_event[36]; 8186 hci_create_gap_connection_complete_event(hci_event, gap_event); 8187 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 8188 } 8189 #endif 8190 #endif 8191 8192 static void hci_emit_transport_packet_sent(void){ 8193 // notify upper stack that it might be possible to send again 8194 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8195 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 8196 } 8197 8198 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8199 uint8_t event[6]; 8200 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8201 event[1] = sizeof(event) - 2u; 8202 event[2] = 0; // status = OK 8203 little_endian_store_16(event, 3, con_handle); 8204 event[5] = reason; 8205 hci_emit_btstack_event(event, sizeof(event), 1); 8206 } 8207 8208 static void hci_emit_nr_connections_changed(void){ 8209 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8210 uint8_t event[3]; 8211 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8212 event[1] = sizeof(event) - 2u; 8213 event[2] = nr_hci_connections(); 8214 hci_emit_btstack_event(event, sizeof(event), 1); 8215 } 8216 8217 static void hci_emit_hci_open_failed(void){ 8218 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8219 uint8_t event[2]; 8220 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8221 event[1] = sizeof(event) - 2u; 8222 hci_emit_btstack_event(event, sizeof(event), 1); 8223 } 8224 8225 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8226 log_info("hci_emit_dedicated_bonding_result %u ", status); 8227 uint8_t event[9]; 8228 int pos = 0; 8229 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8230 event[pos++] = sizeof(event) - 2u; 8231 event[pos++] = status; 8232 reverse_bd_addr(address, &event[pos]); 8233 hci_emit_btstack_event(event, sizeof(event), 1); 8234 } 8235 8236 8237 #ifdef ENABLE_CLASSIC 8238 8239 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8240 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8241 uint8_t event[5]; 8242 int pos = 0; 8243 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8244 event[pos++] = sizeof(event) - 2; 8245 little_endian_store_16(event, 2, con_handle); 8246 pos += 2; 8247 event[pos++] = level; 8248 hci_emit_btstack_event(event, sizeof(event), 1); 8249 } 8250 8251 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8252 if (!connection) return LEVEL_0; 8253 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8254 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8255 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8256 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8257 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8258 // LEVEL 4 always requires 128 bit encryption key size 8259 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8260 security_level = LEVEL_3; 8261 } 8262 return security_level; 8263 } 8264 8265 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8266 uint8_t event[4]; 8267 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8268 event[1] = sizeof(event) - 2; 8269 event[2] = discoverable; 8270 event[3] = connectable; 8271 hci_emit_btstack_event(event, sizeof(event), 1); 8272 } 8273 8274 // query if remote side supports eSCO 8275 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8276 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8277 if (!connection) return false; 8278 return (connection->remote_supported_features[0] & 1) != 0; 8279 } 8280 8281 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8282 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8283 if (!connection) return 0; 8284 return connection->remote_supported_sco_packets; 8285 } 8286 8287 static bool hci_ssp_supported(hci_connection_t * connection){ 8288 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8289 return (connection->bonding_flags & mask) == mask; 8290 } 8291 8292 // query if remote side supports SSP 8293 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8294 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8295 if (!connection) return false; 8296 return hci_ssp_supported(connection) ? 1 : 0; 8297 } 8298 8299 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8300 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8301 } 8302 8303 /** 8304 * Check if remote supported features query has completed 8305 */ 8306 bool hci_remote_features_available(hci_con_handle_t handle){ 8307 hci_connection_t * connection = hci_connection_for_handle(handle); 8308 if (!connection) return false; 8309 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8310 } 8311 8312 /** 8313 * Trigger remote supported features query 8314 */ 8315 8316 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8317 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8318 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8319 } 8320 } 8321 8322 void hci_remote_features_query(hci_con_handle_t con_handle){ 8323 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8324 if (!connection) return; 8325 hci_trigger_remote_features_for_connection(connection); 8326 hci_run(); 8327 } 8328 8329 // GAP API 8330 /** 8331 * @bbrief enable/disable bonding. default is enabled 8332 * @praram enabled 8333 */ 8334 void gap_set_bondable_mode(int enable){ 8335 hci_stack->bondable = enable ? 1 : 0; 8336 } 8337 /** 8338 * @brief Get bondable mode. 8339 * @return 1 if bondable 8340 */ 8341 int gap_get_bondable_mode(void){ 8342 return hci_stack->bondable; 8343 } 8344 8345 /** 8346 * @brief map link keys to security levels 8347 */ 8348 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8349 switch (link_key_type){ 8350 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8351 return LEVEL_4; 8352 case COMBINATION_KEY: 8353 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8354 return LEVEL_3; 8355 default: 8356 return LEVEL_2; 8357 } 8358 } 8359 8360 /** 8361 * @brief map link keys to secure connection yes/no 8362 */ 8363 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8364 switch (link_key_type){ 8365 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8366 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8367 return true; 8368 default: 8369 return false; 8370 } 8371 } 8372 8373 /** 8374 * @brief map link keys to authenticated 8375 */ 8376 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8377 switch (link_key_type){ 8378 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8379 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8380 return true; 8381 default: 8382 return false; 8383 } 8384 } 8385 8386 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8387 log_info("gap_mitm_protection_required_for_security_level %u", level); 8388 return level > LEVEL_2; 8389 } 8390 8391 /** 8392 * @brief get current security level 8393 */ 8394 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8395 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8396 if (!connection) return LEVEL_0; 8397 return gap_security_level_for_connection(connection); 8398 } 8399 8400 /** 8401 * @brief request connection to device to 8402 * @result GAP_AUTHENTICATION_RESULT 8403 */ 8404 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8405 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8406 if (!connection){ 8407 hci_emit_security_level(con_handle, LEVEL_0); 8408 return; 8409 } 8410 8411 btstack_assert(hci_is_le_connection(connection) == false); 8412 8413 // Core Spec 5.2, GAP 5.2.2: "When in Secure Connections Only mode, all services (except those allowed to have Security Mode 4, Level 0) 8414 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8415 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8416 requested_level = LEVEL_4; 8417 } 8418 8419 gap_security_level_t current_level = gap_security_level(con_handle); 8420 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8421 requested_level, connection->requested_security_level, current_level); 8422 8423 // authentication active if authentication request was sent or planned level > 0 8424 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8425 if (authentication_active){ 8426 // authentication already active 8427 if (connection->requested_security_level < requested_level){ 8428 // increase requested level as new level is higher 8429 // TODO: handle re-authentication when done 8430 connection->requested_security_level = requested_level; 8431 } 8432 } else { 8433 // no request active, notify if security sufficient 8434 if (requested_level <= current_level){ 8435 hci_emit_security_level(con_handle, current_level); 8436 return; 8437 } 8438 8439 // store request 8440 connection->requested_security_level = requested_level; 8441 8442 // start to authenticate connection 8443 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8444 8445 // request remote features if not already active, also trigger hci_run 8446 hci_remote_features_query(con_handle); 8447 } 8448 } 8449 8450 /** 8451 * @brief start dedicated bonding with device. disconnect after bonding 8452 * @param device 8453 * @param request MITM protection 8454 * @result GAP_DEDICATED_BONDING_COMPLETE 8455 */ 8456 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8457 8458 // create connection state machine 8459 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8460 8461 if (!connection){ 8462 return BTSTACK_MEMORY_ALLOC_FAILED; 8463 } 8464 8465 // delete link key 8466 gap_drop_link_key_for_bd_addr(device); 8467 8468 // configure LEVEL_2/3, dedicated bonding 8469 connection->state = SEND_CREATE_CONNECTION; 8470 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8471 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8472 connection->bonding_flags = BONDING_DEDICATED; 8473 8474 hci_run(); 8475 8476 return 0; 8477 } 8478 8479 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8480 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8481 if (connection == NULL){ 8482 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8483 } 8484 if (defer){ 8485 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8486 } else { 8487 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8488 // trigger disconnect 8489 hci_run(); 8490 } 8491 return ERROR_CODE_SUCCESS; 8492 } 8493 8494 void gap_set_local_name(const char * local_name){ 8495 hci_stack->local_name = local_name; 8496 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8497 // also update EIR if not set by user 8498 if (hci_stack->eir_data == NULL){ 8499 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8500 } 8501 hci_run(); 8502 } 8503 #endif 8504 8505 8506 #ifdef ENABLE_BLE 8507 8508 #ifdef ENABLE_LE_CENTRAL 8509 void gap_start_scan(void){ 8510 hci_stack->le_scanning_enabled = true; 8511 hci_run(); 8512 } 8513 8514 void gap_stop_scan(void){ 8515 hci_stack->le_scanning_enabled = false; 8516 hci_run(); 8517 } 8518 8519 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8520 hci_stack->le_scan_type = scan_type; 8521 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8522 hci_stack->le_scan_interval = scan_interval; 8523 hci_stack->le_scan_window = scan_window; 8524 hci_stack->le_scanning_param_update = true; 8525 hci_run(); 8526 } 8527 8528 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8529 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8530 } 8531 8532 void gap_set_scan_duplicate_filter(bool enabled){ 8533 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8534 } 8535 8536 void gap_set_scan_phys(uint8_t phys){ 8537 // LE Coded and LE 1M PHY 8538 hci_stack->le_scan_phys = phys & 0x05; 8539 } 8540 8541 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8542 // disallow le connection if outgoing already active 8543 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8544 log_error("le connect already active"); 8545 return ERROR_CODE_COMMAND_DISALLOWED; 8546 } 8547 8548 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8549 if (conn == NULL) { 8550 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8551 if (conn == NULL){ 8552 // alloc failed 8553 log_info("gap_connect: failed to alloc hci_connection_t"); 8554 return BTSTACK_MEMORY_ALLOC_FAILED; 8555 } 8556 } else { 8557 switch (conn->state) { 8558 case RECEIVED_DISCONNECTION_COMPLETE: 8559 // connection was just disconnected, reset state and allow re-connect 8560 conn->role = HCI_ROLE_MASTER; 8561 break; 8562 default: 8563 return ERROR_CODE_COMMAND_DISALLOWED; 8564 } 8565 } 8566 8567 // set le connecting state 8568 if (hci_is_le_connection_type(addr_type)){ 8569 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8570 } 8571 8572 // trigger connect 8573 log_info("gap_connect: send create connection next"); 8574 conn->state = SEND_CREATE_CONNECTION; 8575 hci_run(); 8576 return ERROR_CODE_SUCCESS; 8577 } 8578 8579 // @assumption: only a single outgoing LE Connection exists 8580 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8581 btstack_linked_item_t *it; 8582 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8583 hci_connection_t * conn = (hci_connection_t *) it; 8584 if (hci_is_le_connection(conn)){ 8585 switch (conn->state){ 8586 case SEND_CREATE_CONNECTION: 8587 case SENT_CREATE_CONNECTION: 8588 return conn; 8589 default: 8590 break; 8591 }; 8592 } 8593 } 8594 return NULL; 8595 } 8596 8597 uint8_t gap_connect_cancel(void){ 8598 hci_connection_t * conn; 8599 switch (hci_stack->le_connecting_request){ 8600 case LE_CONNECTING_IDLE: 8601 break; 8602 case LE_CONNECTING_WHITELIST: 8603 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8604 hci_run(); 8605 break; 8606 case LE_CONNECTING_DIRECT: 8607 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8608 conn = gap_get_outgoing_le_connection(); 8609 if (conn == NULL){ 8610 hci_run(); 8611 } else { 8612 switch (conn->state){ 8613 case SEND_CREATE_CONNECTION: 8614 // skip sending create connection and emit event instead 8615 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8616 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8617 btstack_memory_hci_connection_free( conn ); 8618 break; 8619 case SENT_CREATE_CONNECTION: 8620 // let hci_run_general_gap_le cancel outgoing connection 8621 hci_run(); 8622 break; 8623 default: 8624 break; 8625 } 8626 } 8627 break; 8628 default: 8629 btstack_unreachable(); 8630 break; 8631 } 8632 return ERROR_CODE_SUCCESS; 8633 } 8634 8635 /** 8636 * @brief Set connection parameters for outgoing connections 8637 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8638 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8639 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8640 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8641 * @param conn_latency, default: 4 8642 * @param supervision_timeout (unit: 10ms), default: 720 ms 8643 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8644 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8645 */ 8646 8647 void gap_set_connection_phys(uint8_t phys){ 8648 // LE Coded, LE 1M, LE 2M PHY 8649 hci_stack->le_connection_phys = phys & 7; 8650 } 8651 8652 #endif 8653 8654 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8655 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8656 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8657 hci_stack->le_connection_scan_interval = conn_scan_interval; 8658 hci_stack->le_connection_scan_window = conn_scan_window; 8659 hci_stack->le_connection_interval_min = conn_interval_min; 8660 hci_stack->le_connection_interval_max = conn_interval_max; 8661 hci_stack->le_connection_latency = conn_latency; 8662 hci_stack->le_supervision_timeout = supervision_timeout; 8663 hci_stack->le_minimum_ce_length = min_ce_length; 8664 hci_stack->le_maximum_ce_length = max_ce_length; 8665 } 8666 8667 /** 8668 * @brief Updates the connection parameters for a given LE connection 8669 * @param handle 8670 * @param conn_interval_min (unit: 1.25ms) 8671 * @param conn_interval_max (unit: 1.25ms) 8672 * @param conn_latency 8673 * @param supervision_timeout (unit: 10ms) 8674 * @return 0 if ok 8675 */ 8676 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8677 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8678 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8679 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8680 connection->le_conn_interval_min = conn_interval_min; 8681 connection->le_conn_interval_max = conn_interval_max; 8682 connection->le_conn_latency = conn_latency; 8683 connection->le_supervision_timeout = supervision_timeout; 8684 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8685 hci_run(); 8686 return 0; 8687 } 8688 8689 /** 8690 * @brief Request an update of the connection parameter for a given LE connection 8691 * @param handle 8692 * @param conn_interval_min (unit: 1.25ms) 8693 * @param conn_interval_max (unit: 1.25ms) 8694 * @param conn_latency 8695 * @param supervision_timeout (unit: 10ms) 8696 * @return 0 if ok 8697 */ 8698 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8699 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8700 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8701 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8702 connection->le_conn_interval_min = conn_interval_min; 8703 connection->le_conn_interval_max = conn_interval_max; 8704 connection->le_conn_latency = conn_latency; 8705 connection->le_supervision_timeout = supervision_timeout; 8706 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8707 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8708 hci_emit_btstack_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8709 return 0; 8710 } 8711 8712 #ifdef ENABLE_LE_PERIPHERAL 8713 8714 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8715 static void hci_assert_advertisement_set_0_ready(void){ 8716 // force advertising set creation for legacy LE Advertising 8717 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8718 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8719 } 8720 } 8721 #endif 8722 8723 /** 8724 * @brief Set Advertisement Data 8725 * @param advertising_data_length 8726 * @param advertising_data (max 31 octets) 8727 * @note data is not copied, pointer has to stay valid 8728 */ 8729 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8730 hci_stack->le_advertisements_data_len = advertising_data_length; 8731 hci_stack->le_advertisements_data = advertising_data; 8732 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8733 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8734 hci_assert_advertisement_set_0_ready(); 8735 #endif 8736 hci_run(); 8737 } 8738 8739 /** 8740 * @brief Set Scan Response Data 8741 * @param advertising_data_length 8742 * @param advertising_data (max 31 octets) 8743 * @note data is not copied, pointer has to stay valid 8744 */ 8745 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8746 hci_stack->le_scan_response_data_len = scan_response_data_length; 8747 hci_stack->le_scan_response_data = scan_response_data; 8748 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8749 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8750 hci_assert_advertisement_set_0_ready(); 8751 #endif 8752 hci_run(); 8753 } 8754 8755 /** 8756 * @brief Set Advertisement Parameters 8757 * @param adv_int_min 8758 * @param adv_int_max 8759 * @param adv_type 8760 * @param direct_address_type 8761 * @param direct_address 8762 * @param channel_map 8763 * @param filter_policy 8764 * 8765 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8766 */ 8767 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8768 uint8_t direct_address_typ, bd_addr_t direct_address, 8769 uint8_t channel_map, uint8_t filter_policy) { 8770 8771 hci_stack->le_advertisements_interval_min = adv_int_min; 8772 hci_stack->le_advertisements_interval_max = adv_int_max; 8773 hci_stack->le_advertisements_type = adv_type; 8774 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8775 hci_stack->le_advertisements_channel_map = channel_map; 8776 hci_stack->le_advertisements_filter_policy = filter_policy; 8777 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8778 6); 8779 8780 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8781 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8782 hci_run(); 8783 } 8784 8785 /** 8786 * @brief Enable/Disable Advertisements 8787 * @param enabled 8788 */ 8789 void gap_advertisements_enable(int enabled){ 8790 if (enabled == 0){ 8791 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8792 } else { 8793 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8794 } 8795 hci_update_advertisements_enabled_for_current_roles(); 8796 hci_run(); 8797 } 8798 8799 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8800 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8801 btstack_linked_list_iterator_t it; 8802 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8803 while (btstack_linked_list_iterator_has_next(&it)){ 8804 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8805 if ( item->advertising_handle == advertising_handle ) { 8806 return item; 8807 } 8808 } 8809 return NULL; 8810 } 8811 8812 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8813 hci_stack->le_resolvable_private_address_update_s = update_s; 8814 hci_run(); 8815 return ERROR_CODE_SUCCESS; 8816 } 8817 8818 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8819 // find free advertisement handle. we use LE_EXTENDED_ADVERTISING_LEGACY_HANDLE for non-extended advertising 8820 uint8_t advertisement_handle; 8821 for (advertisement_handle = LE_EXTENDED_ADVERTISING_LEGACY_HANDLE + 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8822 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8823 } 8824 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8825 // clear 8826 memset(storage, 0, sizeof(le_advertising_set_t)); 8827 // copy params 8828 storage->advertising_handle = advertisement_handle; 8829 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8830 // add to list 8831 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8832 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8833 *out_advertising_handle = advertisement_handle; 8834 // set tasks and start 8835 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8836 hci_run(); 8837 return ERROR_CODE_SUCCESS; 8838 } 8839 8840 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8841 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8842 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8843 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8844 // set tasks and start 8845 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8846 hci_run(); 8847 return ERROR_CODE_SUCCESS; 8848 } 8849 8850 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8851 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8852 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8853 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8854 return ERROR_CODE_SUCCESS; 8855 } 8856 8857 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8858 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8859 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8860 memcpy(advertising_set->random_address, random_address, 6); 8861 // set tasks and start 8862 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8863 hci_run(); 8864 return ERROR_CODE_SUCCESS; 8865 } 8866 8867 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8868 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8869 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8870 advertising_set->adv_data = advertising_data; 8871 advertising_set->adv_data_len = advertising_data_length; 8872 // set tasks and start 8873 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8874 hci_run(); 8875 return ERROR_CODE_SUCCESS; 8876 } 8877 8878 uint8_t gap_extended_advertising_set_scan_response_data(uint8_t advertising_handle, uint16_t scan_response_data_length, const uint8_t * scan_response_data){ 8879 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8880 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8881 advertising_set->scan_data = scan_response_data; 8882 advertising_set->scan_data_len = scan_response_data_length; 8883 // set tasks and start 8884 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8885 hci_run(); 8886 return ERROR_CODE_SUCCESS; 8887 } 8888 8889 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8890 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8891 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8892 advertising_set->enable_timeout = timeout; 8893 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8894 // set tasks and start 8895 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8896 hci_run(); 8897 return ERROR_CODE_SUCCESS; 8898 } 8899 8900 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8901 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8902 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8903 // set tasks and start 8904 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8905 hci_run(); 8906 return ERROR_CODE_SUCCESS; 8907 } 8908 8909 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8910 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8911 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8912 // set tasks and start 8913 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8914 hci_run(); 8915 return ERROR_CODE_SUCCESS; 8916 } 8917 8918 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8919 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8920 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8921 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8922 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8923 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8924 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8925 // set tasks and start 8926 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8927 hci_run(); 8928 return ERROR_CODE_SUCCESS; 8929 } 8930 8931 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8932 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8933 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8934 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8935 return ERROR_CODE_SUCCESS; 8936 } 8937 8938 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8939 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8940 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8941 advertising_set->periodic_data = periodic_data; 8942 advertising_set->periodic_data_len = periodic_data_length; 8943 // set tasks and start 8944 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8945 hci_run(); 8946 return ERROR_CODE_SUCCESS; 8947 } 8948 8949 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8950 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8951 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8952 // set tasks and start 8953 advertising_set->periodic_include_adi = include_adi; 8954 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8955 hci_run(); 8956 return ERROR_CODE_SUCCESS; 8957 } 8958 8959 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8960 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8961 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8962 // set tasks and start 8963 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8964 hci_run(); 8965 return ERROR_CODE_SUCCESS; 8966 } 8967 8968 #ifdef ENABLE_LE_CENTRAL 8969 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8970 hci_stack->le_past_mode = mode; 8971 hci_stack->le_past_skip = skip; 8972 hci_stack->le_past_sync_timeout = sync_timeout; 8973 hci_stack->le_past_cte_type = cte_type; 8974 hci_stack->le_past_set_default_params = true; 8975 hci_run(); 8976 return ERROR_CODE_SUCCESS; 8977 } 8978 8979 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8980 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8981 if (hci_connection == NULL){ 8982 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8983 } 8984 hci_connection->le_past_sync_handle = sync_handle; 8985 hci_connection->le_past_service_data = service_data; 8986 hci_run(); 8987 return ERROR_CODE_SUCCESS; 8988 } 8989 #endif 8990 8991 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8992 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8993 if (hci_connection == NULL){ 8994 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8995 } 8996 hci_connection->le_past_advertising_handle = advertising_handle; 8997 hci_connection->le_past_service_data = service_data; 8998 hci_run(); 8999 return ERROR_CODE_SUCCESS; 9000 } 9001 9002 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 9003 9004 #endif 9005 9006 #endif 9007 9008 void hci_le_set_own_address_type(uint8_t own_address_type){ 9009 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 9010 if (own_address_type == hci_stack->le_own_addr_type) return; 9011 hci_stack->le_own_addr_type = own_address_type; 9012 9013 #ifdef ENABLE_LE_PERIPHERAL 9014 // update advertisement parameters, too 9015 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 9016 hci_run(); 9017 #endif 9018 #ifdef ENABLE_LE_CENTRAL 9019 // note: we don't update scan parameters or modify ongoing connection attempts 9020 #endif 9021 } 9022 9023 void hci_le_random_address_set(const bd_addr_t random_address){ 9024 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 9025 memcpy(hci_stack->le_random_address, random_address, 6); 9026 hci_stack->le_random_address_set = true; 9027 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 9028 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9029 if (hci_le_extended_advertising_supported()){ 9030 hci_assert_advertisement_set_0_ready(); 9031 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 9032 } 9033 #endif 9034 hci_run(); 9035 } 9036 9037 #endif 9038 9039 uint8_t gap_disconnect(hci_con_handle_t handle){ 9040 hci_connection_t * conn = hci_connection_for_handle(handle); 9041 if (!conn){ 9042 hci_emit_disconnection_complete(handle, 0); 9043 return 0; 9044 } 9045 uint8_t status = ERROR_CODE_SUCCESS; 9046 switch (conn->state){ 9047 case RECEIVED_DISCONNECTION_COMPLETE: 9048 // ignore if remote just disconnected 9049 break; 9050 case SEND_DISCONNECT: 9051 case SENT_DISCONNECT: 9052 // disconnect already requested or sent 9053 status = ERROR_CODE_COMMAND_DISALLOWED; 9054 break; 9055 default: 9056 // trigger hci_disconnect 9057 conn->state = SEND_DISCONNECT; 9058 hci_run(); 9059 break; 9060 } 9061 return status; 9062 } 9063 9064 int gap_read_rssi(hci_con_handle_t con_handle){ 9065 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9066 if (hci_connection == NULL) return 0; 9067 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 9068 hci_run(); 9069 return 1; 9070 } 9071 9072 /** 9073 * @brief Get connection type 9074 * @param con_handle 9075 * @result connection_type 9076 */ 9077 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 9078 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9079 if (!conn) return GAP_CONNECTION_INVALID; 9080 switch (conn->address_type){ 9081 case BD_ADDR_TYPE_LE_PUBLIC: 9082 case BD_ADDR_TYPE_LE_RANDOM: 9083 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9084 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9085 return GAP_CONNECTION_LE; 9086 case BD_ADDR_TYPE_SCO: 9087 return GAP_CONNECTION_SCO; 9088 case BD_ADDR_TYPE_ACL: 9089 return GAP_CONNECTION_ACL; 9090 default: 9091 return GAP_CONNECTION_INVALID; 9092 } 9093 } 9094 9095 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9096 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9097 if (!conn) return HCI_ROLE_INVALID; 9098 return (hci_role_t) conn->role; 9099 } 9100 9101 9102 #ifdef ENABLE_CLASSIC 9103 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9104 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9105 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9106 conn->request_role = role; 9107 hci_run(); 9108 return ERROR_CODE_SUCCESS; 9109 } 9110 #endif 9111 9112 #ifdef ENABLE_BLE 9113 9114 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint16_t phy_options){ 9115 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9116 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9117 9118 conn->le_phy_update_all_phys = all_phys; 9119 conn->le_phy_update_tx_phys = tx_phys; 9120 conn->le_phy_update_rx_phys = rx_phys; 9121 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9122 9123 hci_run(); 9124 9125 return 0; 9126 } 9127 9128 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9129 9130 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9131 // incorrect configuration: 9132 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9133 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9134 btstack_assert(false); 9135 #endif 9136 9137 // check if already in list 9138 btstack_linked_list_iterator_t it; 9139 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9140 while (btstack_linked_list_iterator_has_next(&it)) { 9141 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9142 if (entry->address_type != address_type) { 9143 continue; 9144 } 9145 if (memcmp(entry->address, address, 6) != 0) { 9146 continue; 9147 } 9148 9149 // if already on controller: 9150 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9151 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9152 // drop remove request 9153 entry->state = LE_WHITELIST_ON_CONTROLLER; 9154 return ERROR_CODE_SUCCESS; 9155 } else { 9156 // disallow as already on controller 9157 return ERROR_CODE_COMMAND_DISALLOWED; 9158 } 9159 } 9160 9161 // assume scheduled to add 9162 return ERROR_CODE_COMMAND_DISALLOWED; 9163 } 9164 9165 // alloc and add to list 9166 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9167 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9168 entry->address_type = address_type; 9169 (void)memcpy(entry->address, address, 6); 9170 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9171 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9172 return ERROR_CODE_SUCCESS; 9173 } 9174 9175 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9176 btstack_linked_list_iterator_t it; 9177 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9178 while (btstack_linked_list_iterator_has_next(&it)){ 9179 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9180 if (entry->address_type != address_type) { 9181 continue; 9182 } 9183 if (memcmp(entry->address, address, 6) != 0) { 9184 continue; 9185 } 9186 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9187 // remove from controller if already present 9188 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9189 } else { 9190 // directly remove entry from whitelist 9191 btstack_linked_list_iterator_remove(&it); 9192 btstack_memory_whitelist_entry_free(entry); 9193 } 9194 return ERROR_CODE_SUCCESS; 9195 } 9196 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9197 } 9198 9199 static void hci_whitelist_clear(void){ 9200 btstack_linked_list_iterator_t it; 9201 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9202 while (btstack_linked_list_iterator_has_next(&it)){ 9203 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9204 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9205 // remove from controller if already present 9206 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9207 continue; 9208 } 9209 // directly remove entry from whitelist 9210 btstack_linked_list_iterator_remove(&it); 9211 btstack_memory_whitelist_entry_free(entry); 9212 } 9213 } 9214 9215 /** 9216 * @brief Clear Whitelist 9217 * @return 0 if ok 9218 */ 9219 uint8_t gap_whitelist_clear(void){ 9220 hci_whitelist_clear(); 9221 hci_run(); 9222 return ERROR_CODE_SUCCESS; 9223 } 9224 9225 /** 9226 * @brief Add Device to Whitelist 9227 * @param address_typ 9228 * @param address 9229 * @return 0 if ok 9230 */ 9231 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9232 uint8_t status = hci_whitelist_add(address_type, address); 9233 if (status){ 9234 return status; 9235 } 9236 hci_run(); 9237 return ERROR_CODE_SUCCESS; 9238 } 9239 9240 /** 9241 * @brief Remove Device from Whitelist 9242 * @param address_typ 9243 * @param address 9244 * @return 0 if ok 9245 */ 9246 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9247 uint8_t status = hci_whitelist_remove(address_type, address); 9248 if (status){ 9249 return status; 9250 } 9251 hci_run(); 9252 return ERROR_CODE_SUCCESS; 9253 } 9254 9255 #ifdef ENABLE_LE_CENTRAL 9256 /** 9257 * @brief Connect with Whitelist 9258 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9259 * @return - if ok 9260 */ 9261 uint8_t gap_connect_with_whitelist(void){ 9262 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9263 return ERROR_CODE_COMMAND_DISALLOWED; 9264 } 9265 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9266 hci_run(); 9267 return ERROR_CODE_SUCCESS; 9268 } 9269 9270 /** 9271 * @brief Auto Connection Establishment - Start Connecting to device 9272 * @param address_typ 9273 * @param address 9274 * @return 0 if ok 9275 */ 9276 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9277 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9278 return ERROR_CODE_COMMAND_DISALLOWED; 9279 } 9280 9281 uint8_t status = hci_whitelist_add(address_type, address); 9282 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9283 return status; 9284 } 9285 9286 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9287 9288 hci_run(); 9289 return ERROR_CODE_SUCCESS; 9290 } 9291 9292 /** 9293 * @brief Auto Connection Establishment - Stop Connecting to device 9294 * @param address_typ 9295 * @param address 9296 * @return 0 if ok 9297 */ 9298 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9299 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9300 return ERROR_CODE_COMMAND_DISALLOWED; 9301 } 9302 9303 hci_whitelist_remove(address_type, address); 9304 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9305 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9306 } 9307 hci_run(); 9308 return 0; 9309 } 9310 9311 /** 9312 * @brief Auto Connection Establishment - Stop everything 9313 * @note Convenience function to stop all active auto connection attempts 9314 */ 9315 uint8_t gap_auto_connection_stop_all(void){ 9316 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9317 return ERROR_CODE_COMMAND_DISALLOWED; 9318 } 9319 hci_whitelist_clear(); 9320 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9321 hci_run(); 9322 return ERROR_CODE_SUCCESS; 9323 } 9324 9325 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9326 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9327 if (!conn) return 0; 9328 return conn->le_connection_interval; 9329 } 9330 #endif 9331 #endif 9332 9333 #ifdef ENABLE_CLASSIC 9334 /** 9335 * @brief Set Extended Inquiry Response data 9336 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9337 * @note has to be done before stack starts up 9338 */ 9339 void gap_set_extended_inquiry_response(const uint8_t * data){ 9340 hci_stack->eir_data = data; 9341 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9342 hci_run(); 9343 } 9344 9345 /** 9346 * @brief Start GAP Classic Inquiry 9347 * @param duration in 1.28s units 9348 * @return 0 if ok 9349 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9350 */ 9351 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9352 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9353 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9354 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9355 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9356 } 9357 hci_stack->inquiry_state = duration_in_1280ms_units; 9358 hci_stack->inquiry_max_period_length = 0; 9359 hci_stack->inquiry_min_period_length = 0; 9360 hci_run(); 9361 return 0; 9362 } 9363 9364 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9365 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9366 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9367 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9368 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9369 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9370 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9371 9372 hci_stack->inquiry_state = duration; 9373 hci_stack->inquiry_max_period_length = max_period_length; 9374 hci_stack->inquiry_min_period_length = min_period_length; 9375 hci_run(); 9376 return 0; 9377 } 9378 9379 /** 9380 * @brief Stop GAP Classic Inquiry 9381 * @return 0 if ok 9382 */ 9383 int gap_inquiry_stop(void){ 9384 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9385 // emit inquiry complete event, before it even started 9386 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9387 hci_emit_btstack_event(event, sizeof(event), 1); 9388 return 0; 9389 } 9390 switch (hci_stack->inquiry_state){ 9391 case GAP_INQUIRY_STATE_ACTIVE: 9392 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9393 hci_run(); 9394 return ERROR_CODE_SUCCESS; 9395 case GAP_INQUIRY_STATE_PERIODIC: 9396 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9397 hci_run(); 9398 return ERROR_CODE_SUCCESS; 9399 default: 9400 return ERROR_CODE_COMMAND_DISALLOWED; 9401 } 9402 } 9403 9404 void gap_inquiry_set_lap(uint32_t lap){ 9405 hci_stack->inquiry_lap = lap; 9406 } 9407 9408 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9409 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9410 hci_stack->inquiry_scan_window = inquiry_scan_window; 9411 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9412 hci_run(); 9413 } 9414 9415 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9416 { 9417 hci_stack->inquiry_tx_power_level = tx_power; 9418 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9419 hci_run(); 9420 } 9421 9422 9423 /** 9424 * @brief Remote Name Request 9425 * @param addr 9426 * @param page_scan_repetition_mode 9427 * @param clock_offset only used when bit 15 is set 9428 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9429 */ 9430 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9431 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9432 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9433 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9434 hci_stack->remote_name_clock_offset = clock_offset; 9435 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9436 hci_run(); 9437 return 0; 9438 } 9439 9440 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9441 hci_stack->gap_pairing_state = state; 9442 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9443 hci_run(); 9444 return 0; 9445 } 9446 9447 /** 9448 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9449 * @param addr 9450 * @param pin_data 9451 * @param pin_len 9452 * @return 0 if ok 9453 */ 9454 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9455 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9456 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9457 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9458 hci_stack->gap_pairing_pin_len = pin_len; 9459 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9460 } 9461 9462 /** 9463 * @brief Legacy Pairing Pin Code Response 9464 * @param addr 9465 * @param pin 9466 * @return 0 if ok 9467 */ 9468 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9469 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9470 } 9471 9472 /** 9473 * @brief Abort Legacy Pairing 9474 * @param addr 9475 * @param pin 9476 * @return 0 if ok 9477 */ 9478 int gap_pin_code_negative(bd_addr_t addr){ 9479 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9480 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9481 } 9482 9483 /** 9484 * @brief SSP Passkey Response 9485 * @param addr 9486 * @param passkey 9487 * @return 0 if ok 9488 */ 9489 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9490 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9491 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9492 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9493 } 9494 9495 /** 9496 * @brief Abort SSP Passkey Entry/Pairing 9497 * @param addr 9498 * @param pin 9499 * @return 0 if ok 9500 */ 9501 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9502 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9503 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9504 } 9505 9506 /** 9507 * @brief Accept SSP Numeric Comparison 9508 * @param addr 9509 * @param passkey 9510 * @return 0 if ok 9511 */ 9512 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9513 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9514 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9515 } 9516 9517 /** 9518 * @brief Abort SSP Numeric Comparison/Pairing 9519 * @param addr 9520 * @param pin 9521 * @return 0 if ok 9522 */ 9523 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9524 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9525 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9526 } 9527 9528 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9529 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9530 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9531 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9532 connectionSetAuthenticationFlags(conn, flag); 9533 hci_run(); 9534 return ERROR_CODE_SUCCESS; 9535 } 9536 #endif 9537 9538 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9539 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9540 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9541 } 9542 9543 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9544 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9545 } 9546 #endif 9547 9548 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9549 /** 9550 * @brief Report Remote OOB Data 9551 * @param bd_addr 9552 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9553 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9554 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9555 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9556 */ 9557 uint8_t gap_ssp_remote_oob_data(const bd_addr_t addr, const uint8_t * c_192, const uint8_t * r_192, const uint8_t * c_256, const uint8_t * r_256){ 9558 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9559 if (connection == NULL) { 9560 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9561 } 9562 connection->classic_oob_c_192 = c_192; 9563 connection->classic_oob_r_192 = r_192; 9564 9565 // ignore P-256 if not supported by us 9566 if (hci_stack->secure_connections_active){ 9567 connection->classic_oob_c_256 = c_256; 9568 connection->classic_oob_r_256 = r_256; 9569 } 9570 9571 return ERROR_CODE_SUCCESS; 9572 } 9573 /** 9574 * @brief Generate new OOB data 9575 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9576 */ 9577 void gap_ssp_generate_oob_data(void){ 9578 hci_stack->classic_read_local_oob_data = true; 9579 hci_run(); 9580 } 9581 9582 #endif 9583 9584 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9585 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9586 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9587 if (connection == NULL) { 9588 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9589 } 9590 9591 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9592 connection->link_key_type = type; 9593 9594 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9595 } 9596 9597 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9598 /** 9599 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9600 * @param inquiry_mode see bluetooth_defines.h 9601 */ 9602 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9603 hci_stack->inquiry_mode = inquiry_mode; 9604 } 9605 9606 /** 9607 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9608 */ 9609 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9610 hci_stack->sco_voice_setting = voice_setting; 9611 } 9612 9613 /** 9614 * @brief Get SCO Voice Setting 9615 * @return current voice setting 9616 */ 9617 uint16_t hci_get_sco_voice_setting(void){ 9618 return hci_stack->sco_voice_setting; 9619 } 9620 9621 static int hci_have_usb_transport(void){ 9622 if (!hci_stack->hci_transport) return 0; 9623 const char * transport_name = hci_stack->hci_transport->name; 9624 if (!transport_name) return 0; 9625 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9626 } 9627 9628 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9629 uint16_t sco_packet_length = 0; 9630 9631 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9632 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as many bytes 9633 int multiplier; 9634 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9635 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9636 multiplier = 2; 9637 } else { 9638 multiplier = 1; 9639 } 9640 #endif 9641 9642 #ifdef ENABLE_SCO_OVER_HCI 9643 if (hci_have_usb_transport()){ 9644 // see Core Spec for H2 USB Transfer. 9645 // 3 byte SCO header + 24 bytes per connection 9646 // @note multiple sco connections not supported currently 9647 sco_packet_length = 3 + 24 * multiplier; 9648 } else { 9649 // 3 byte SCO header + SCO packet length over the air 9650 sco_packet_length = 3 + payload_size * multiplier; 9651 // assert that it still fits inside an SCO buffer 9652 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9653 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9654 } 9655 } 9656 #endif 9657 #ifdef HAVE_SCO_TRANSPORT 9658 // 3 byte SCO header + SCO packet length over the air 9659 sco_packet_length = 3 + payload_size * multiplier; 9660 // assert that it still fits inside an SCO buffer 9661 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9662 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9663 } 9664 #endif 9665 return sco_packet_length; 9666 } 9667 9668 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9669 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9670 if (connection != NULL){ 9671 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9672 } 9673 return 0; 9674 } 9675 9676 uint16_t hci_get_sco_packet_length(void){ 9677 btstack_linked_list_iterator_t it; 9678 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9679 while (btstack_linked_list_iterator_has_next(&it)){ 9680 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9681 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9682 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9683 } 9684 } 9685 return 0; 9686 } 9687 9688 /** 9689 * @brief Sets the master/slave policy 9690 * @param policy (0: attempt to become master, 1: let connecting device decide) 9691 */ 9692 void hci_set_master_slave_policy(uint8_t policy){ 9693 hci_stack->master_slave_policy = policy; 9694 } 9695 9696 #endif 9697 9698 HCI_STATE hci_get_state(void){ 9699 return hci_stack->state; 9700 } 9701 9702 #ifdef ENABLE_CLASSIC 9703 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9704 hci_stack->gap_classic_accept_callback = accept_callback; 9705 } 9706 #endif 9707 9708 /** 9709 * @brief Set callback for Bluetooth Hardware Error 9710 */ 9711 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9712 hci_stack->hardware_error_callback = fn; 9713 } 9714 9715 void hci_disconnect_all(void){ 9716 btstack_linked_list_iterator_t it; 9717 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9718 while (btstack_linked_list_iterator_has_next(&it)){ 9719 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9720 if (con->state == SENT_DISCONNECT) continue; 9721 con->state = SEND_DISCONNECT; 9722 } 9723 hci_run(); 9724 } 9725 9726 uint16_t hci_get_manufacturer(void){ 9727 return hci_stack->manufacturer; 9728 } 9729 9730 #ifdef ENABLE_BLE 9731 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9732 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9733 if (!hci_con) return NULL; 9734 return &hci_con->sm_connection; 9735 } 9736 9737 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9738 // without sm.c default values from create_connection_for_bd_addr_and_type() result in non-encrypted, not-authenticated 9739 #endif 9740 9741 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9742 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9743 if (hci_connection == NULL) return 0; 9744 if (hci_is_le_connection(hci_connection)){ 9745 #ifdef ENABLE_BLE 9746 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9747 if (sm_conn->sm_connection_encrypted != 0u) { 9748 return sm_conn->sm_actual_encryption_key_size; 9749 } 9750 #endif 9751 } else { 9752 #ifdef ENABLE_CLASSIC 9753 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9754 return hci_connection->encryption_key_size; 9755 } 9756 #endif 9757 } 9758 return 0; 9759 } 9760 9761 bool gap_authenticated(hci_con_handle_t con_handle){ 9762 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9763 if (hci_connection == NULL) return false; 9764 9765 switch (hci_connection->address_type){ 9766 #ifdef ENABLE_BLE 9767 case BD_ADDR_TYPE_LE_PUBLIC: 9768 case BD_ADDR_TYPE_LE_RANDOM: 9769 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9770 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9771 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9772 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9773 #endif 9774 #ifdef ENABLE_CLASSIC 9775 case BD_ADDR_TYPE_SCO: 9776 case BD_ADDR_TYPE_ACL: 9777 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9778 #endif 9779 default: 9780 return false; 9781 } 9782 } 9783 9784 bool gap_secure_connection(hci_con_handle_t con_handle){ 9785 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9786 if (hci_connection == NULL) return 0; 9787 9788 switch (hci_connection->address_type){ 9789 #ifdef ENABLE_BLE 9790 case BD_ADDR_TYPE_LE_PUBLIC: 9791 case BD_ADDR_TYPE_LE_RANDOM: 9792 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9793 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9794 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9795 return hci_connection->sm_connection.sm_connection_sc; 9796 #endif 9797 #ifdef ENABLE_CLASSIC 9798 case BD_ADDR_TYPE_SCO: 9799 case BD_ADDR_TYPE_ACL: 9800 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9801 #endif 9802 default: 9803 return false; 9804 } 9805 } 9806 9807 bool gap_bonded(hci_con_handle_t con_handle){ 9808 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9809 if (hci_connection == NULL) return 0; 9810 9811 #ifdef ENABLE_CLASSIC 9812 link_key_t link_key; 9813 link_key_type_t link_key_type; 9814 #endif 9815 switch (hci_connection->address_type){ 9816 #ifdef ENABLE_BLE 9817 case BD_ADDR_TYPE_LE_PUBLIC: 9818 case BD_ADDR_TYPE_LE_RANDOM: 9819 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9820 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9821 return hci_connection->sm_connection.sm_le_db_index >= 0; 9822 #endif 9823 #ifdef ENABLE_CLASSIC 9824 case BD_ADDR_TYPE_SCO: 9825 case BD_ADDR_TYPE_ACL: 9826 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9827 #endif 9828 default: 9829 return false; 9830 } 9831 } 9832 9833 #ifdef ENABLE_BLE 9834 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9835 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9836 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9837 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9838 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticated connection cannot be authorized 9839 return sm_conn->sm_connection_authorization_state; 9840 } 9841 #endif 9842 9843 #ifdef ENABLE_CLASSIC 9844 uint8_t gap_sniff_mode_enter(hci_con_handle_t con_handle, uint16_t sniff_min_interval, uint16_t sniff_max_interval, uint16_t sniff_attempt, uint16_t sniff_timeout){ 9845 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9846 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9847 conn->sniff_min_interval = sniff_min_interval; 9848 conn->sniff_max_interval = sniff_max_interval; 9849 conn->sniff_attempt = sniff_attempt; 9850 conn->sniff_timeout = sniff_timeout; 9851 hci_run(); 9852 return 0; 9853 } 9854 9855 /** 9856 * @brief Exit Sniff mode 9857 * @param con_handle 9858 @ @return 0 if ok 9859 */ 9860 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9861 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9862 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9863 conn->sniff_min_interval = 0xffff; 9864 hci_run(); 9865 return 0; 9866 } 9867 9868 uint8_t gap_sniff_subrating_configure(hci_con_handle_t con_handle, uint16_t max_latency, uint16_t min_remote_timeout, uint16_t min_local_timeout){ 9869 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9870 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9871 conn->sniff_subrating_max_latency = max_latency; 9872 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9873 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9874 hci_run(); 9875 return ERROR_CODE_SUCCESS; 9876 } 9877 9878 uint8_t gap_qos_set(hci_con_handle_t con_handle, hci_service_type_t service_type, uint32_t token_rate, uint32_t peak_bandwidth, uint32_t latency, uint32_t delay_variation){ 9879 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9880 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9881 conn->qos_service_type = service_type; 9882 conn->qos_token_rate = token_rate; 9883 conn->qos_peak_bandwidth = peak_bandwidth; 9884 conn->qos_latency = latency; 9885 conn->qos_delay_variation = delay_variation; 9886 hci_run(); 9887 return ERROR_CODE_SUCCESS; 9888 } 9889 9890 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9891 hci_stack->new_page_scan_interval = page_scan_interval; 9892 hci_stack->new_page_scan_window = page_scan_window; 9893 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9894 hci_run(); 9895 } 9896 9897 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9898 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9899 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9900 hci_run(); 9901 } 9902 9903 void gap_set_page_timeout(uint16_t page_timeout){ 9904 hci_stack->page_timeout = page_timeout; 9905 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9906 hci_run(); 9907 } 9908 9909 #endif 9910 9911 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9912 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9913 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9914 if (le_device_db_index >= le_device_db_max_count()) return; 9915 uint8_t offset = le_device_db_index >> 3; 9916 uint8_t mask = 1 << (le_device_db_index & 7); 9917 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9918 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9919 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9920 // note: go back to remove entries, otherwise, a remove + add will skip the add 9921 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9922 } 9923 } 9924 9925 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9926 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9927 if (le_device_db_index >= le_device_db_max_count()) return; 9928 uint8_t offset = le_device_db_index >> 3; 9929 uint8_t mask = 1 << (le_device_db_index & 7); 9930 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9931 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9932 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9933 } 9934 } 9935 9936 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9937 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9938 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9939 } 9940 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9941 // restart le resolving list update 9942 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9943 } 9944 return ERROR_CODE_SUCCESS; 9945 } 9946 9947 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9948 hci_stack->le_privacy_mode = privacy_mode; 9949 } 9950 #endif 9951 9952 #ifdef ENABLE_BLE 9953 #ifdef ENABLE_LE_CENTRAL 9954 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9955 9956 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9957 9958 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9959 // incorrect configuration: 9960 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9961 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9962 btstack_assert(false); 9963 #endif 9964 9965 // check if already in list 9966 btstack_linked_list_iterator_t it; 9967 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9968 while (btstack_linked_list_iterator_has_next(&it)) { 9969 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9970 if (entry->sid != advertising_sid) { 9971 continue; 9972 } 9973 if (entry->address_type != address_type) { 9974 continue; 9975 } 9976 if (memcmp(entry->address, address, 6) != 0) { 9977 continue; 9978 } 9979 // disallow if already scheduled to add 9980 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9981 return ERROR_CODE_COMMAND_DISALLOWED; 9982 } 9983 // still on controller, but scheduled to remove -> re-add 9984 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9985 return ERROR_CODE_SUCCESS; 9986 } 9987 // alloc and add to list 9988 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9989 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9990 entry->sid = advertising_sid; 9991 entry->address_type = address_type; 9992 (void)memcpy(entry->address, address, 6); 9993 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9994 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9995 return ERROR_CODE_SUCCESS; 9996 } 9997 9998 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9999 btstack_linked_list_iterator_t it; 10000 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10001 while (btstack_linked_list_iterator_has_next(&it)){ 10002 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10003 if (entry->sid != advertising_sid) { 10004 continue; 10005 } 10006 if (entry->address_type != address_type) { 10007 continue; 10008 } 10009 if (memcmp(entry->address, address, 6) != 0) { 10010 continue; 10011 } 10012 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10013 // remove from controller if already present 10014 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10015 } else { 10016 // directly remove entry from whitelist 10017 btstack_linked_list_iterator_remove(&it); 10018 btstack_memory_periodic_advertiser_list_entry_free(entry); 10019 } 10020 return ERROR_CODE_SUCCESS; 10021 } 10022 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10023 } 10024 10025 static void hci_periodic_advertiser_list_clear(void){ 10026 btstack_linked_list_iterator_t it; 10027 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10028 while (btstack_linked_list_iterator_has_next(&it)){ 10029 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10030 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10031 // remove from controller if already present 10032 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10033 continue; 10034 } 10035 // directly remove entry from whitelist 10036 btstack_linked_list_iterator_remove(&it); 10037 btstack_memory_periodic_advertiser_list_entry_free(entry); 10038 } 10039 } 10040 10041 uint8_t gap_periodic_advertiser_list_clear(void){ 10042 hci_periodic_advertiser_list_clear(); 10043 hci_run(); 10044 return ERROR_CODE_SUCCESS; 10045 } 10046 10047 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10048 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 10049 if (status){ 10050 return status; 10051 } 10052 hci_run(); 10053 return ERROR_CODE_SUCCESS; 10054 } 10055 10056 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10057 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 10058 if (status){ 10059 return status; 10060 } 10061 hci_run(); 10062 return ERROR_CODE_SUCCESS; 10063 } 10064 10065 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 10066 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 10067 // abort if already active 10068 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 10069 return ERROR_CODE_COMMAND_DISALLOWED; 10070 } 10071 // store request 10072 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 10073 hci_stack->le_periodic_sync_options = options; 10074 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 10075 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 10076 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 10077 hci_stack->le_periodic_sync_skip = skip; 10078 hci_stack->le_periodic_sync_timeout = sync_timeout; 10079 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 10080 10081 hci_run(); 10082 return ERROR_CODE_SUCCESS; 10083 } 10084 10085 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 10086 // abort if not requested 10087 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 10088 return ERROR_CODE_COMMAND_DISALLOWED; 10089 } 10090 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 10091 hci_run(); 10092 return ERROR_CODE_SUCCESS; 10093 } 10094 10095 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10096 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10097 return ERROR_CODE_COMMAND_DISALLOWED; 10098 } 10099 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10100 hci_run(); 10101 return ERROR_CODE_SUCCESS; 10102 } 10103 10104 #endif 10105 #endif 10106 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10107 static hci_iso_stream_t * 10108 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10109 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10110 if (iso_stream != NULL){ 10111 iso_stream->iso_type = iso_type; 10112 iso_stream->state = state; 10113 iso_stream->group_id = group_id; 10114 iso_stream->stream_id = stream_id; 10115 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10116 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10117 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10118 } 10119 return iso_stream; 10120 } 10121 10122 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10123 btstack_linked_list_iterator_t it; 10124 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10125 while (btstack_linked_list_iterator_has_next(&it)){ 10126 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10127 if (iso_stream->cis_handle == con_handle ) { 10128 return iso_stream; 10129 } 10130 } 10131 return NULL; 10132 } 10133 10134 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10135 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10136 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10137 btstack_memory_hci_iso_stream_free(iso_stream); 10138 } 10139 10140 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10141 btstack_linked_list_iterator_t it; 10142 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10143 while (btstack_linked_list_iterator_has_next(&it)){ 10144 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10145 if ((iso_stream->group_id == group_id) && 10146 (iso_stream->iso_type == iso_type)){ 10147 btstack_linked_list_iterator_remove(&it); 10148 btstack_memory_hci_iso_stream_free(iso_stream); 10149 } 10150 } 10151 } 10152 10153 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10154 btstack_linked_list_iterator_t it; 10155 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10156 while (btstack_linked_list_iterator_has_next(&it)){ 10157 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10158 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10159 (iso_stream->group_id == group_id)){ 10160 btstack_linked_list_iterator_remove(&it); 10161 btstack_memory_hci_iso_stream_free(iso_stream); 10162 } 10163 } 10164 } 10165 10166 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10167 UNUSED(big_handle); 10168 10169 btstack_linked_list_iterator_t it; 10170 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10171 while (btstack_linked_list_iterator_has_next(&it)){ 10172 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10173 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10174 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10175 } 10176 } 10177 } 10178 10179 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10180 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10181 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10182 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10183 return (sdu_len_offset + 2 + sdu_len) == size; 10184 } 10185 10186 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10187 if (iso_stream == NULL){ 10188 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10189 return; 10190 } 10191 10192 if (hci_stack->iso_packet_handler == NULL) { 10193 return; 10194 } 10195 10196 // parse header 10197 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10198 uint16_t data_total_length = little_endian_read_16(packet, 2); 10199 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10200 10201 // assert packet is complete 10202 if ((data_total_length + 4u) != size){ 10203 return; 10204 } 10205 10206 if ((pb_flag & 0x01) == 0){ 10207 if (pb_flag == 0x02){ 10208 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10209 if (hci_iso_sdu_complete(packet, size)) { 10210 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10211 } 10212 } else { 10213 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10214 if (size > sizeof(iso_stream->reassembly_buffer)){ 10215 return; 10216 } 10217 memcpy(iso_stream->reassembly_buffer, packet, size); 10218 // fix pb_flag 10219 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10220 iso_stream->reassembly_pos = size; 10221 } 10222 } else { 10223 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10224 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10225 if (ts_flag != 0){ 10226 return; 10227 } 10228 // append fragment 10229 if (iso_stream->reassembly_pos == 0){ 10230 return; 10231 } 10232 10233 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10234 // reset reassembly buffer 10235 iso_stream->reassembly_pos = 0; 10236 return; 10237 } 10238 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10239 iso_stream->reassembly_pos += data_total_length; 10240 10241 // deliver if last fragment and SDU complete 10242 if (pb_flag == 0x03){ 10243 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10244 // fix data_total_length 10245 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10246 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10247 } 10248 // reset reassembly buffer 10249 iso_stream->reassembly_pos = 0; 10250 } 10251 } 10252 } 10253 10254 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10255 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10256 uint16_t pos = 0; 10257 event[pos++] = HCI_EVENT_META_GAP; 10258 event[pos++] = 4 + (2 * big->num_bis); 10259 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10260 event[pos++] = status; 10261 event[pos++] = big->big_handle; 10262 event[pos++] = big->num_bis; 10263 uint8_t i; 10264 for (i=0;i<big->num_bis;i++){ 10265 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10266 pos += 2; 10267 } 10268 hci_emit_btstack_event(event, pos, 0); 10269 } 10270 10271 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10272 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10273 uint16_t pos = 0; 10274 event[pos++] = HCI_EVENT_META_GAP; 10275 event[pos++] = 4 + (2 * cig->num_cis); 10276 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10277 event[pos++] = status; 10278 event[pos++] = cig->cig_id; 10279 event[pos++] = cig->num_cis; 10280 uint8_t i; 10281 for (i=0;i<cig->num_cis;i++){ 10282 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10283 pos += 2; 10284 } 10285 hci_emit_btstack_event(event, pos, 0); 10286 } 10287 10288 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10289 uint16_t pos = 0; 10290 event[pos++] = HCI_EVENT_META_GAP; 10291 event[pos++] = 8; 10292 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10293 event[pos++] = status; 10294 event[pos++] = iso_stream->group_id; 10295 event[pos++] = iso_stream->stream_id; 10296 little_endian_store_16(event, pos, iso_stream->cis_handle); 10297 pos += 2; 10298 little_endian_store_16(event, pos, iso_stream->acl_handle); 10299 pos += 2; 10300 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10301 pos += 2; 10302 event[pos++] = iso_stream->number_of_subevents; 10303 event[pos++] = iso_stream->burst_number_c_to_p; 10304 event[pos++] = iso_stream->burst_number_p_to_c; 10305 event[pos++] = iso_stream->flush_timeout_c_to_p; 10306 event[pos++] = iso_stream->flush_timeout_p_to_c; 10307 return pos; 10308 } 10309 10310 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10311 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10312 // cache data before finalizing struct 10313 uint8_t event [17]; 10314 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10315 btstack_assert(pos <= sizeof(event)); 10316 if (status != ERROR_CODE_SUCCESS){ 10317 hci_iso_stream_finalize(iso_stream); 10318 } 10319 hci_emit_btstack_event(event, pos, 0); 10320 } 10321 10322 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10323 uint8_t event [4]; 10324 uint16_t pos = 0; 10325 event[pos++] = HCI_EVENT_META_GAP; 10326 event[pos++] = 2; 10327 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10328 event[pos++] = big->big_handle; 10329 hci_emit_btstack_event(event, pos, 0); 10330 } 10331 10332 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10333 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10334 uint16_t pos = 0; 10335 event[pos++] = HCI_EVENT_META_GAP; 10336 event[pos++] = 4; 10337 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10338 event[pos++] = status; 10339 event[pos++] = big_sync->big_handle; 10340 event[pos++] = big_sync->num_bis; 10341 uint8_t i; 10342 for (i=0;i<big_sync->num_bis;i++){ 10343 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10344 pos += 2; 10345 } 10346 hci_emit_btstack_event(event, pos, 0); 10347 } 10348 10349 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10350 uint8_t event [4]; 10351 uint16_t pos = 0; 10352 event[pos++] = HCI_EVENT_META_GAP; 10353 event[pos++] = 2; 10354 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10355 event[pos++] = big_handle; 10356 hci_emit_btstack_event(event, pos, 0); 10357 } 10358 10359 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10360 uint8_t event[6]; 10361 uint16_t pos = 0; 10362 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10363 event[pos++] = sizeof(event) - 2; 10364 event[pos++] = big->big_handle; 10365 event[pos++] = bis_index; 10366 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10367 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10368 } 10369 10370 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10371 uint8_t event[4]; 10372 uint16_t pos = 0; 10373 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10374 event[pos++] = sizeof(event) - 2; 10375 little_endian_store_16(event, pos, cis_con_handle); 10376 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10377 } 10378 10379 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10380 btstack_linked_list_iterator_t it; 10381 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10382 while (btstack_linked_list_iterator_has_next(&it)){ 10383 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10384 if ( big->big_handle == big_handle ) { 10385 return big; 10386 } 10387 } 10388 return NULL; 10389 } 10390 10391 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10392 btstack_linked_list_iterator_t it; 10393 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10394 while (btstack_linked_list_iterator_has_next(&it)){ 10395 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10396 if ( big_sync->big_handle == big_handle ) { 10397 return big_sync; 10398 } 10399 } 10400 return NULL; 10401 } 10402 10403 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10404 hci_stack->iso_packets_to_queue = num_packets; 10405 } 10406 10407 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10408 btstack_linked_list_iterator_t it; 10409 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10410 while (btstack_linked_list_iterator_has_next(&it)){ 10411 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10412 if ( cig->cig_id == cig_id ) { 10413 return cig; 10414 } 10415 } 10416 return NULL; 10417 } 10418 10419 static void hci_iso_notify_can_send_now(void){ 10420 10421 // BIG 10422 10423 btstack_linked_list_iterator_t it; 10424 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10425 while (btstack_linked_list_iterator_has_next(&it)){ 10426 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10427 // track number completed packet timestamps 10428 if (big->num_completed_timestamp_current_valid){ 10429 big->num_completed_timestamp_current_valid = false; 10430 if (big->num_completed_timestamp_previous_valid){ 10431 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10432 int32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10433 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10434 big->num_completed_timestamp_previous_ms); 10435 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10436 // to catch up, skip packet on all BIS 10437 uint8_t i; 10438 for (i=0;i<big->num_bis;i++){ 10439 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10440 if (iso_stream){ 10441 iso_stream->num_packets_to_skip++; 10442 } 10443 } 10444 } 10445 } 10446 big->num_completed_timestamp_previous_valid = true; 10447 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10448 } 10449 10450 if (big->can_send_now_requested){ 10451 // check if no outgoing iso packets pending and no can send now have to be emitted 10452 uint8_t i; 10453 bool can_send = true; 10454 uint8_t num_iso_queued_minimum = 0; 10455 for (i=0;i<big->num_bis;i++){ 10456 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10457 if (iso_stream == NULL) continue; 10458 // handle case where individual ISO packet was sent too late: 10459 // for each additionally queued packet, a new one needs to get skipped 10460 if (i==0){ 10461 num_iso_queued_minimum = iso_stream->num_packets_sent; 10462 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10463 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10464 iso_stream->num_packets_to_skip += num_packets_to_skip; 10465 iso_stream->num_packets_sent -= num_packets_to_skip; 10466 } 10467 // check if we can send now 10468 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10469 can_send = false; 10470 break; 10471 } 10472 } 10473 if (can_send){ 10474 // propagate can send now to individual streams 10475 big->can_send_now_requested = false; 10476 for (i=0;i<big->num_bis;i++){ 10477 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10478 iso_stream->emit_ready_to_send = true; 10479 } 10480 } 10481 } 10482 } 10483 10484 if (hci_stack->hci_packet_buffer_reserved) return; 10485 10486 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10487 while (btstack_linked_list_iterator_has_next(&it)){ 10488 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10489 // report bis ready 10490 uint8_t i; 10491 for (i=0;i<big->num_bis;i++){ 10492 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10493 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10494 iso_stream->emit_ready_to_send = false; 10495 hci_emit_bis_can_send_now(big, i); 10496 if (hci_stack->hci_packet_buffer_reserved) return; 10497 } 10498 } 10499 } 10500 10501 10502 // CIS 10503 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10504 while (btstack_linked_list_iterator_has_next(&it)) { 10505 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10506 if ((iso_stream->can_send_now_requested) && 10507 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10508 iso_stream->can_send_now_requested = false; 10509 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10510 if (hci_stack->hci_packet_buffer_reserved) return; 10511 } 10512 } 10513 } 10514 10515 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10516 // make big handle unique and usuable for big and big sync 10517 if (hci_big_for_handle(big_handle) != NULL){ 10518 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10519 } 10520 if (hci_big_sync_for_handle(big_handle) != NULL){ 10521 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10522 } 10523 if (num_bis == 0){ 10524 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10525 } 10526 if (num_bis > MAX_NR_BIS){ 10527 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10528 } 10529 10530 // reserve ISO Streams 10531 uint8_t i; 10532 uint8_t status = ERROR_CODE_SUCCESS; 10533 for (i=0;i<num_bis;i++){ 10534 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10535 if (iso_stream == NULL) { 10536 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10537 break; 10538 } 10539 } 10540 10541 // free structs on error 10542 if (status != ERROR_CODE_SUCCESS){ 10543 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10544 } 10545 10546 return status; 10547 } 10548 10549 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10550 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10551 if (status != ERROR_CODE_SUCCESS){ 10552 return status; 10553 } 10554 10555 le_audio_big_t * big = storage; 10556 big->big_handle = big_params->big_handle; 10557 big->params = big_params; 10558 big->state = LE_AUDIO_BIG_STATE_CREATE; 10559 big->num_bis = big_params->num_bis; 10560 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10561 10562 hci_run(); 10563 10564 return ERROR_CODE_SUCCESS; 10565 } 10566 10567 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10568 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10569 if (status != ERROR_CODE_SUCCESS){ 10570 return status; 10571 } 10572 10573 le_audio_big_sync_t * big_sync = storage; 10574 big_sync->big_handle = big_sync_params->big_handle; 10575 big_sync->params = big_sync_params; 10576 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10577 big_sync->num_bis = big_sync_params->num_bis; 10578 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10579 10580 hci_run(); 10581 10582 return ERROR_CODE_SUCCESS; 10583 } 10584 10585 uint8_t gap_big_terminate(uint8_t big_handle){ 10586 le_audio_big_t * big = hci_big_for_handle(big_handle); 10587 if (big == NULL){ 10588 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10589 } 10590 switch (big->state){ 10591 case LE_AUDIO_BIG_STATE_CREATE: 10592 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10593 hci_emit_big_terminated(big); 10594 break; 10595 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10596 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10597 break; 10598 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10599 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10600 case LE_AUDIO_BIG_STATE_ACTIVE: 10601 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10602 hci_run(); 10603 break; 10604 default: 10605 return ERROR_CODE_COMMAND_DISALLOWED; 10606 } 10607 return ERROR_CODE_SUCCESS; 10608 } 10609 10610 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10611 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10612 if (big_sync == NULL){ 10613 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10614 } 10615 switch (big_sync->state){ 10616 case LE_AUDIO_BIG_STATE_CREATE: 10617 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10618 hci_emit_big_sync_stopped(big_handle); 10619 break; 10620 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10621 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10622 break; 10623 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10624 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10625 case LE_AUDIO_BIG_STATE_ACTIVE: 10626 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10627 hci_run(); 10628 break; 10629 default: 10630 return ERROR_CODE_COMMAND_DISALLOWED; 10631 } 10632 return ERROR_CODE_SUCCESS; 10633 } 10634 10635 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10636 le_audio_big_t * big = hci_big_for_handle(big_handle); 10637 if (big == NULL){ 10638 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10639 } 10640 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10641 return ERROR_CODE_COMMAND_DISALLOWED; 10642 } 10643 big->can_send_now_requested = true; 10644 hci_iso_notify_can_send_now(); 10645 return ERROR_CODE_SUCCESS; 10646 } 10647 10648 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10649 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10650 if (iso_stream == NULL){ 10651 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10652 } 10653 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10654 return ERROR_CODE_COMMAND_DISALLOWED; 10655 } 10656 iso_stream->can_send_now_requested = true; 10657 hci_iso_notify_can_send_now(); 10658 return ERROR_CODE_SUCCESS; 10659 } 10660 10661 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10662 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10663 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10664 } 10665 if (cig_params->num_cis == 0){ 10666 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10667 } 10668 if (cig_params->num_cis > MAX_NR_CIS){ 10669 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10670 } 10671 10672 // reserve ISO Streams 10673 uint8_t i; 10674 uint8_t status = ERROR_CODE_SUCCESS; 10675 for (i=0;i<cig_params->num_cis;i++){ 10676 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10677 if (iso_stream == NULL) { 10678 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10679 break; 10680 } 10681 } 10682 10683 // free structs on error 10684 if (status != ERROR_CODE_SUCCESS){ 10685 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10686 return status; 10687 } 10688 10689 le_audio_cig_t * cig = storage; 10690 cig->cig_id = cig_params->cig_id; 10691 cig->num_cis = cig_params->num_cis; 10692 cig->params = cig_params; 10693 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10694 for (i=0;i<cig->num_cis;i++){ 10695 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10696 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10697 cig->cis_setup_active[i] = false; 10698 cig->cis_established[i] = false; 10699 } 10700 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10701 10702 hci_run(); 10703 10704 return ERROR_CODE_SUCCESS; 10705 } 10706 10707 uint8_t gap_cig_remove(uint8_t cig_id){ 10708 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10709 if (cig == NULL){ 10710 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10711 } 10712 10713 // close active CIS 10714 uint8_t i; 10715 for (i=0;i<cig->num_cis;i++){ 10716 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10717 if (stream != NULL){ 10718 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10719 } 10720 } 10721 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10722 10723 hci_run(); 10724 10725 return ERROR_CODE_SUCCESS; 10726 } 10727 10728 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10729 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10730 if (cig == NULL){ 10731 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10732 } 10733 10734 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10735 return ERROR_CODE_COMMAND_DISALLOWED; 10736 } 10737 10738 // store ACL Connection Handles 10739 uint8_t i; 10740 for (i=0;i<cig->num_cis;i++){ 10741 // check that all con handles exist and store 10742 hci_con_handle_t cis_handle = cis_con_handles[i]; 10743 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10744 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10745 } 10746 uint8_t j; 10747 bool found = false; 10748 for (j=0;j<cig->num_cis;j++){ 10749 if (cig->cis_con_handles[j] == cis_handle){ 10750 cig->acl_con_handles[j] = acl_con_handles[j]; 10751 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10752 btstack_assert(iso_stream != NULL); 10753 iso_stream->acl_handle = acl_con_handles[j]; 10754 found = true; 10755 break; 10756 } 10757 } 10758 if (!found){ 10759 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10760 } 10761 } 10762 10763 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10764 hci_run(); 10765 10766 return ERROR_CODE_SUCCESS; 10767 } 10768 10769 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10770 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10771 if (iso_stream == NULL){ 10772 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10773 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10774 } 10775 10776 // set next state and continue 10777 iso_stream->state = state; 10778 hci_run(); 10779 return ERROR_CODE_SUCCESS; 10780 } 10781 10782 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10783 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10784 } 10785 10786 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10787 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10788 } 10789 10790 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10791 10792 // GAP Privacy - notify clients before random address update 10793 10794 static bool gap_privacy_client_all_ready(void){ 10795 // check if all ready 10796 btstack_linked_list_iterator_t it; 10797 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10798 while (btstack_linked_list_iterator_has_next(&it)) { 10799 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10800 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10801 return false; 10802 } 10803 } 10804 return true; 10805 } 10806 10807 static void gap_privacy_clients_handle_ready(void){ 10808 // clear 'ready' 10809 btstack_linked_list_iterator_t it; 10810 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10811 while (btstack_linked_list_iterator_has_next(&it)) { 10812 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10813 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10814 } 10815 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10816 hci_run(); 10817 } 10818 10819 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10820 btstack_linked_list_iterator_t it; 10821 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10822 while (btstack_linked_list_iterator_has_next(&it)) { 10823 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10824 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10825 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10826 (*client->callback)(client, new_random_address); 10827 } 10828 } 10829 if (gap_privacy_client_all_ready()){ 10830 gap_privacy_clients_handle_ready(); 10831 } 10832 } 10833 10834 void gap_privacy_client_register(gap_privacy_client_t * client){ 10835 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10836 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10837 } 10838 10839 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10840 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10841 if (gap_privacy_client_all_ready()){ 10842 gap_privacy_clients_handle_ready(); 10843 } 10844 } 10845 10846 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10847 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10848 } 10849 10850 #endif /* ENABLE_BLE */ 10851 10852 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10853 void hci_setup_test_connections_fuzz(void){ 10854 hci_connection_t * conn; 10855 10856 // default address: 66:55:44:33:00:01 10857 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10858 10859 // setup Controller info 10860 hci_stack->num_cmd_packets = 255; 10861 hci_stack->acl_packets_total_num = 255; 10862 10863 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10864 addr[5] = 0x01; 10865 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10866 conn->con_handle = addr[5]; 10867 conn->state = RECEIVED_CONNECTION_REQUEST; 10868 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10869 10870 // setup incoming Classic SCO connection with con handle 0x0002 10871 addr[5] = 0x02; 10872 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10873 conn->con_handle = addr[5]; 10874 conn->state = RECEIVED_CONNECTION_REQUEST; 10875 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10876 10877 // setup ready Classic ACL connection with con handle 0x0003 10878 addr[5] = 0x03; 10879 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10880 conn->con_handle = addr[5]; 10881 conn->state = OPEN; 10882 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10883 10884 // setup ready Classic SCO connection with con handle 0x0004 10885 addr[5] = 0x04; 10886 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10887 conn->con_handle = addr[5]; 10888 conn->state = OPEN; 10889 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10890 10891 // setup ready LE ACL connection with con handle 0x005 and public address 10892 addr[5] = 0x05; 10893 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10894 conn->con_handle = addr[5]; 10895 conn->state = OPEN; 10896 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10897 conn->sm_connection.sm_connection_encrypted = 1; 10898 } 10899 10900 void hci_free_connections_fuzz(void){ 10901 btstack_linked_list_iterator_t it; 10902 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10903 while (btstack_linked_list_iterator_has_next(&it)){ 10904 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10905 btstack_linked_list_iterator_remove(&it); 10906 btstack_memory_hci_connection_free(con); 10907 } 10908 } 10909 void hci_simulate_working_fuzz(void){ 10910 hci_stack->le_scanning_param_update = false; 10911 hci_init_done(); 10912 hci_stack->num_cmd_packets = 255; 10913 } 10914 #endif 10915