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, 6) \ 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_info("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 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4411 while (btstack_linked_list_iterator_has_next(&it)) { 4412 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4413 if (advertising_set->advertising_handle == advertising_handle){ 4414 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4415 } 4416 } 4417 // support legacy advertisements 4418 if (advertising_handle == 0){ 4419 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4420 hci_update_advertisements_enabled_for_current_roles(); 4421 } 4422 // event may come before le connection complete and announces new connection 4423 if (hci_subevent_le_advertising_set_terminated_get_status(packet) == ERROR_CODE_SUCCESS){ 4424 handle = hci_subevent_le_advertising_set_terminated_get_connection_handle(packet); 4425 conn = hci_connection_for_handle(handle); 4426 if (conn == NULL){ 4427 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 4428 if (conn != NULL){ 4429 conn->state = ANNOUNCED; 4430 conn->con_handle = handle; 4431 } 4432 } 4433 } 4434 break; 4435 #endif 4436 #endif 4437 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4438 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4439 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4440 hci_handle_le_connection_complete_event(packet); 4441 break; 4442 4443 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4444 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4445 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4446 conn = hci_connection_for_handle(handle); 4447 if (!conn) break; 4448 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4449 break; 4450 4451 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4452 // connection 4453 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4454 conn = hci_connection_for_handle(handle); 4455 if (conn) { 4456 // read arguments 4457 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4458 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4459 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4460 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4461 4462 // validate against current connection parameter range 4463 le_connection_parameter_range_t existing_range; 4464 gap_get_connection_parameter_range(&existing_range); 4465 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4466 if (update_parameter){ 4467 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4468 conn->le_conn_interval_min = le_conn_interval_min; 4469 conn->le_conn_interval_max = le_conn_interval_max; 4470 conn->le_conn_latency = le_conn_latency; 4471 conn->le_supervision_timeout = le_supervision_timeout; 4472 } else { 4473 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4474 } 4475 } 4476 break; 4477 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4478 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4479 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4480 conn = hci_connection_for_handle(handle); 4481 if (conn) { 4482 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4483 } 4484 break; 4485 #endif 4486 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4487 case HCI_SUBEVENT_LE_CIS_REQUEST: 4488 // incoming CIS request, allocate iso stream object and cache metadata 4489 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4490 hci_subevent_le_cis_request_get_cig_id(packet), 4491 hci_subevent_le_cis_request_get_cis_id(packet)); 4492 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4493 if (iso_stream != NULL){ 4494 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4495 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4496 } 4497 break; 4498 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4499 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4500 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4501 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4502 iso_stream = hci_iso_stream_for_con_handle(handle); 4503 btstack_assert(iso_stream != NULL); 4504 // track connection info 4505 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4506 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4507 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4508 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4509 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4510 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4511 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4512 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4513 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4514 // CIS Accept by Peripheral 4515 if (status == ERROR_CODE_SUCCESS){ 4516 if (iso_stream->max_sdu_p_to_c > 0){ 4517 // we're peripheral and we will send data 4518 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4519 } else { 4520 // we're peripheral and we will only receive data 4521 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4522 } 4523 } else { 4524 hci_cis_handle_created(iso_stream, status); 4525 } 4526 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4527 } else { 4528 // CIG Setup by Central 4529 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4530 btstack_assert(cig != NULL); 4531 // update iso stream state 4532 if (status == ERROR_CODE_SUCCESS){ 4533 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4534 } else { 4535 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4536 } 4537 // update cig state 4538 for (i=0;i<cig->num_cis;i++){ 4539 if (cig->cis_con_handles[i] == handle){ 4540 cig->cis_setup_active[i] = false; 4541 if (status == ERROR_CODE_SUCCESS){ 4542 cig->cis_established[i] = true; 4543 } else { 4544 hci_cis_handle_created(iso_stream, status); 4545 } 4546 } 4547 } 4548 4549 // trigger iso path setup if complete 4550 bool cis_setup_active = false; 4551 for (i=0;i<cig->num_cis;i++){ 4552 cis_setup_active |= cig->cis_setup_active[i]; 4553 } 4554 if (cis_setup_active == false){ 4555 cig->state_vars.next_cis = 0; 4556 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4557 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4558 } 4559 } 4560 } 4561 break; 4562 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4563 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4564 big = hci_big_for_handle(packet[4]); 4565 if (big != NULL){ 4566 uint8_t status = packet[3]; 4567 if (status == ERROR_CODE_SUCCESS){ 4568 // store bis_con_handles and trigger iso path setup 4569 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4570 4571 for (i=0;i<num_bis;i++){ 4572 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4573 big->bis_con_handles[i] = bis_handle; 4574 // assign bis handle 4575 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4576 while (btstack_linked_list_iterator_has_next(&it)){ 4577 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4578 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4579 (iso_stream->group_id == big->big_handle)){ 4580 iso_stream->cis_handle = bis_handle; 4581 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4582 break; 4583 } 4584 } 4585 } 4586 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4587 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4588 big->state_vars.next_bis = 0; 4589 } 4590 } else { 4591 // create BIG failed or has been stopped by us 4592 hci_iso_create_big_failed(big, status); 4593 } 4594 } 4595 break; 4596 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4597 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4598 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4599 if (big != NULL){ 4600 // finalize associated ISO streams 4601 4602 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4603 while (btstack_linked_list_iterator_has_next(&it)){ 4604 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4605 if (iso_stream->group_id == big->big_handle){ 4606 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4607 btstack_linked_list_iterator_remove(&it); 4608 btstack_memory_hci_iso_stream_free(iso_stream); 4609 } 4610 } 4611 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4612 switch (big->state){ 4613 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4614 hci_emit_big_created(big, big->state_vars.status); 4615 break; 4616 default: 4617 hci_emit_big_terminated(big); 4618 break; 4619 } 4620 } 4621 break; 4622 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4623 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4624 big_sync = hci_big_sync_for_handle(packet[4]); 4625 if (big_sync != NULL){ 4626 uint8_t status = packet[3]; 4627 if (status == ERROR_CODE_SUCCESS){ 4628 // store bis_con_handles and trigger iso path setup 4629 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4630 for (i=0;i<num_bis;i++){ 4631 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4632 big_sync->bis_con_handles[i] = bis_handle; 4633 // setup iso_stream_t 4634 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4635 while (btstack_linked_list_iterator_has_next(&it)){ 4636 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4637 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4638 (iso_stream->group_id == big_sync->big_handle)){ 4639 iso_stream->cis_handle = bis_handle; 4640 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4641 break; 4642 } 4643 } 4644 } 4645 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4646 // trigger iso path setup 4647 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4648 big_sync->state_vars.next_bis = 0; 4649 } 4650 } else { 4651 // create BIG Sync failed or has been stopped by us 4652 hci_iso_big_sync_failed(big_sync, status); 4653 } 4654 } 4655 break; 4656 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4657 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4658 big_sync = hci_big_sync_for_handle(packet[4]); 4659 if (big_sync != NULL){ 4660 uint8_t big_handle = packet[4]; 4661 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4662 hci_emit_big_sync_stopped(big_handle); 4663 } 4664 break; 4665 #endif 4666 default: 4667 break; 4668 } 4669 break; 4670 #endif 4671 case HCI_EVENT_VENDOR_SPECIFIC: 4672 // Vendor specific commands often create vendor specific event instead of num completed packets 4673 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4674 switch (hci_stack->manufacturer){ 4675 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4676 hci_stack->num_cmd_packets = 1; 4677 break; 4678 default: 4679 break; 4680 } 4681 break; 4682 default: 4683 break; 4684 } 4685 4686 handle_event_for_current_stack_state(packet, size); 4687 4688 // notify upper stack 4689 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4690 4691 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4692 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4693 handle = little_endian_read_16(packet, 3); 4694 hci_connection_t * aConn = hci_connection_for_handle(handle); 4695 // discard connection if app did not trigger a reconnect in the event handler 4696 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4697 hci_shutdown_connection(aConn); 4698 } 4699 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4700 hci_controller_dump_packets(); 4701 #endif 4702 } 4703 4704 // execute main loop 4705 hci_run(); 4706 } 4707 4708 #ifdef ENABLE_CLASSIC 4709 4710 static void sco_handler(uint8_t * packet, uint16_t size){ 4711 // lookup connection struct 4712 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4713 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4714 if (!conn) return; 4715 4716 #ifdef ENABLE_SCO_OVER_HCI 4717 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4718 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4719 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4720 packet[2] = 0x3c; 4721 memmove(&packet[3], &packet[23], 63); 4722 size = 63; 4723 } 4724 } 4725 4726 if (hci_have_usb_transport()){ 4727 // Nothing to do 4728 } else { 4729 // 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); 4730 if (hci_stack->synchronous_flow_control_enabled == 0){ 4731 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4732 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4733 if (conn->sco_tx_active == 0){ 4734 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4735 conn->sco_tx_active = 1; 4736 conn->sco_tx_ready = max_sco_packets; 4737 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4738 hci_notify_if_sco_can_send_now(); 4739 } 4740 } else { 4741 if (conn->sco_tx_ready < max_sco_packets){ 4742 conn->sco_tx_ready++; 4743 } 4744 hci_notify_if_sco_can_send_now(); 4745 } 4746 } 4747 } 4748 #endif 4749 4750 // deliver to app 4751 if (hci_stack->sco_packet_handler) { 4752 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4753 } 4754 4755 #ifdef HAVE_SCO_TRANSPORT 4756 // We can send one packet for each received packet 4757 conn->sco_tx_ready++; 4758 hci_notify_if_sco_can_send_now(); 4759 #endif 4760 4761 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4762 conn->num_packets_completed++; 4763 hci_stack->host_completed_packets = 1; 4764 hci_run(); 4765 #endif 4766 } 4767 #endif 4768 4769 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4770 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4771 // propagate ISO packets received as ACL 4772 hci_iso_stream_t * iso_stream = NULL; 4773 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4774 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4775 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4776 if (iso_stream != NULL){ 4777 packet_type = HCI_ISO_DATA_PACKET; 4778 } 4779 } 4780 #endif 4781 4782 // don't log internal events unless requested 4783 bool internal_event = (packet_type == HCI_EVENT_PACKET) && (hci_event_packet_get_type(packet) >= BTSTACK_EVENT_FIRST); 4784 bool log_packet = internal_event == false; 4785 #ifdef ENABLE_LOG_BTSTACK_EVENTS 4786 log_packet = true; 4787 #endif 4788 if (log_packet){ 4789 hci_dump_packet(packet_type, 1, packet, size); 4790 } 4791 4792 switch (packet_type) { 4793 case HCI_EVENT_PACKET: 4794 event_handler(packet, size); 4795 break; 4796 case HCI_ACL_DATA_PACKET: 4797 acl_handler(packet, size); 4798 break; 4799 #ifdef ENABLE_CLASSIC 4800 case HCI_SCO_DATA_PACKET: 4801 sco_handler(packet, size); 4802 break; 4803 #endif 4804 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4805 case HCI_ISO_DATA_PACKET: 4806 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4807 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4808 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4809 } 4810 hci_iso_packet_handler(iso_stream, packet, size); 4811 break; 4812 #endif 4813 default: 4814 break; 4815 } 4816 } 4817 4818 /** 4819 * @brief Add event packet handler. 4820 */ 4821 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4822 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4823 } 4824 4825 /** 4826 * @brief Remove event packet handler. 4827 */ 4828 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4829 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4830 } 4831 4832 /** Register HCI packet handlers */ 4833 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4834 hci_stack->acl_packet_handler = handler; 4835 } 4836 4837 #ifdef ENABLE_CLASSIC 4838 /** 4839 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4840 */ 4841 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4842 hci_stack->sco_packet_handler = handler; 4843 } 4844 #endif 4845 4846 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4847 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4848 hci_stack->iso_packet_handler = handler; 4849 } 4850 #endif 4851 4852 static void hci_state_reset(void){ 4853 // no connections yet 4854 hci_stack->connections = NULL; 4855 4856 // keep discoverable/connectable as this has been requested by the client(s) 4857 // hci_stack->discoverable = 0; 4858 // hci_stack->connectable = 0; 4859 // hci_stack->bondable = 1; 4860 // hci_stack->own_addr_type = 0; 4861 4862 // buffer is free 4863 hci_stack->hci_packet_buffer_reserved = false; 4864 4865 // no pending cmds 4866 hci_stack->decline_reason = 0; 4867 4868 hci_stack->secure_connections_active = false; 4869 4870 #ifdef ENABLE_CLASSIC 4871 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4872 4873 hci_stack->gap_tasks_classic = 4874 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4875 GAP_TASK_SET_CLASS_OF_DEVICE | 4876 GAP_TASK_SET_LOCAL_NAME | 4877 GAP_TASK_SET_EIR_DATA | 4878 GAP_TASK_WRITE_SCAN_ENABLE | 4879 GAP_TASK_WRITE_PAGE_TIMEOUT; 4880 #endif 4881 4882 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4883 hci_stack->classic_read_local_oob_data = false; 4884 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4885 #endif 4886 4887 // LE 4888 #ifdef ENABLE_BLE 4889 memset(hci_stack->le_random_address, 0, 6); 4890 hci_stack->le_random_address_set = 0; 4891 #endif 4892 #ifdef ENABLE_LE_CENTRAL 4893 hci_stack->le_scanning_active = false; 4894 hci_stack->le_scanning_param_update = true; 4895 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4896 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4897 hci_stack->le_whitelist_capacity = 0; 4898 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4899 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4900 #endif 4901 #endif 4902 #ifdef ENABLE_LE_PERIPHERAL 4903 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4904 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4905 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4906 } 4907 if (hci_stack->le_advertisements_data != NULL){ 4908 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4909 } 4910 #endif 4911 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4912 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4913 #endif 4914 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4915 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4916 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4917 #endif 4918 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4919 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4920 #endif 4921 } 4922 4923 #ifdef ENABLE_CLASSIC 4924 /** 4925 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4926 */ 4927 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4928 // store and open remote device db 4929 hci_stack->link_key_db = link_key_db; 4930 if (hci_stack->link_key_db) { 4931 hci_stack->link_key_db->open(); 4932 } 4933 } 4934 #endif 4935 4936 void hci_init(const hci_transport_t *transport, const void *config){ 4937 4938 #ifdef HAVE_MALLOC 4939 if (!hci_stack) { 4940 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4941 } 4942 btstack_assert(hci_stack != NULL); 4943 #else 4944 hci_stack = &hci_stack_static; 4945 #endif 4946 memset(hci_stack, 0, sizeof(hci_stack_t)); 4947 4948 // reference to use transport layer implementation 4949 hci_stack->hci_transport = transport; 4950 4951 // reference to used config 4952 hci_stack->config = config; 4953 4954 // setup pointer for outgoing packet buffer 4955 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4956 4957 // max acl payload size defined in config.h 4958 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4959 4960 // register packet handlers with transport 4961 transport->register_packet_handler(&packet_handler); 4962 4963 hci_stack->state = HCI_STATE_OFF; 4964 4965 // class of device 4966 hci_stack->class_of_device = 0x007a020c; // Smartphone 4967 4968 // bondable by default 4969 hci_stack->bondable = 1; 4970 4971 #ifdef ENABLE_CLASSIC 4972 // classic name 4973 hci_stack->local_name = default_classic_name; 4974 4975 // Master slave policy 4976 hci_stack->master_slave_policy = 1; 4977 4978 // Allow Role Switch 4979 hci_stack->allow_role_switch = 1; 4980 4981 // Default / minimum security level = 2 4982 hci_stack->gap_security_level = LEVEL_2; 4983 4984 // Default Security Mode 4 4985 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4986 4987 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4988 hci_stack->gap_required_encyrption_key_size = 7; 4989 4990 // Link Supervision Timeout 4991 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4992 4993 // Page Timeout 4994 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4995 4996 // All ACL packet types are enabled 4997 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4998 #endif 4999 5000 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 5001 hci_stack->ssp_enable = 1; 5002 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 5003 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5004 hci_stack->ssp_auto_accept = 1; 5005 5006 // Secure Connections: enable (requires support from Controller) 5007 hci_stack->secure_connections_enable = true; 5008 5009 // voice setting - signed 16 bit pcm data with CVSD over the air 5010 hci_stack->sco_voice_setting = 0x60; 5011 5012 #ifdef ENABLE_BLE 5013 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 5014 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 5015 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 5016 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 5017 hci_stack->le_connection_latency = 4; // 4 5018 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 5019 hci_stack->le_minimum_ce_length = 0; // 0 ms 5020 hci_stack->le_maximum_ce_length = 0; // 0 ms 5021 #endif 5022 5023 #ifdef ENABLE_LE_CENTRAL 5024 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 5025 5026 // default LE Scanning 5027 hci_stack->le_scan_type = 0x01; // active 5028 hci_stack->le_scan_interval = 0x1e0; // 300 ms 5029 hci_stack->le_scan_window = 0x30; // 30 ms 5030 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 5031 #endif 5032 5033 #ifdef ENABLE_LE_PERIPHERAL 5034 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 5035 5036 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 5037 hci_stack->le_advertisements_interval_min = 0x0800; 5038 hci_stack->le_advertisements_interval_max = 0x0800; 5039 hci_stack->le_advertisements_type = 0; 5040 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 5041 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 5042 hci_stack->le_advertisements_channel_map = 0x07; 5043 hci_stack->le_advertisements_filter_policy = 0; 5044 #endif 5045 5046 // connection parameter range used to answer connection parameter update requests in l2cap 5047 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 5048 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 5049 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 5050 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 5051 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 5052 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 5053 5054 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5055 hci_stack->iso_packets_to_queue = 1; 5056 #endif 5057 5058 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5059 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5060 #endif 5061 5062 hci_state_reset(); 5063 } 5064 5065 void hci_deinit(void){ 5066 btstack_run_loop_remove_timer(&hci_stack->timeout); 5067 #ifdef HAVE_MALLOC 5068 if (hci_stack) { 5069 free(hci_stack); 5070 } 5071 #endif 5072 hci_stack = NULL; 5073 5074 #ifdef ENABLE_CLASSIC 5075 disable_l2cap_timeouts = 0; 5076 #endif 5077 } 5078 5079 /** 5080 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5081 */ 5082 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5083 hci_stack->chipset = chipset_driver; 5084 5085 // reset chipset driver - init is also called on power_up 5086 if (hci_stack->chipset && hci_stack->chipset->init){ 5087 hci_stack->chipset->init(hci_stack->config); 5088 } 5089 } 5090 5091 void hci_enable_custom_pre_init(void){ 5092 hci_stack->chipset_pre_init = true; 5093 } 5094 5095 /** 5096 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5097 */ 5098 void hci_set_control(const btstack_control_t *hardware_control){ 5099 // references to used control implementation 5100 hci_stack->control = hardware_control; 5101 // init with transport config 5102 hardware_control->init(hci_stack->config); 5103 } 5104 5105 static void hci_discard_connections(void){ 5106 btstack_linked_list_iterator_t it; 5107 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5108 while (btstack_linked_list_iterator_has_next(&it)){ 5109 // cancel all l2cap connections by emitting disconnection complete before shutdown (free) connection 5110 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5111 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5112 hci_shutdown_connection(connection); 5113 } 5114 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5115 while (hci_stack->iso_streams != NULL){ 5116 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5117 } 5118 #endif 5119 } 5120 5121 void hci_close(void){ 5122 5123 #ifdef ENABLE_CLASSIC 5124 // close remote device db 5125 if (hci_stack->link_key_db) { 5126 hci_stack->link_key_db->close(); 5127 } 5128 #endif 5129 5130 hci_discard_connections(); 5131 5132 hci_power_control(HCI_POWER_OFF); 5133 5134 #ifdef HAVE_MALLOC 5135 free(hci_stack); 5136 #endif 5137 hci_stack = NULL; 5138 } 5139 5140 #ifdef HAVE_SCO_TRANSPORT 5141 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5142 hci_stack->sco_transport = sco_transport; 5143 sco_transport->register_packet_handler(&packet_handler); 5144 } 5145 #endif 5146 5147 #ifdef ENABLE_CLASSIC 5148 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5149 // validate range and set 5150 if (encryption_key_size < 7) return; 5151 if (encryption_key_size > 16) return; 5152 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5153 } 5154 5155 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5156 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5157 hci_stack->gap_security_mode = security_mode; 5158 return ERROR_CODE_SUCCESS; 5159 } else { 5160 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5161 } 5162 } 5163 5164 gap_security_mode_t gap_get_security_mode(void){ 5165 return hci_stack->gap_security_mode; 5166 } 5167 5168 void gap_set_security_level(gap_security_level_t security_level){ 5169 hci_stack->gap_security_level = security_level; 5170 } 5171 5172 gap_security_level_t gap_get_security_level(void){ 5173 if (hci_stack->gap_secure_connections_only_mode){ 5174 return LEVEL_4; 5175 } 5176 return hci_stack->gap_security_level; 5177 } 5178 5179 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5180 hci_stack->gap_minimal_service_security_level = security_level; 5181 } 5182 5183 void gap_set_secure_connections_only_mode(bool enable){ 5184 hci_stack->gap_secure_connections_only_mode = enable; 5185 } 5186 5187 bool gap_get_secure_connections_only_mode(void){ 5188 return hci_stack->gap_secure_connections_only_mode; 5189 } 5190 #endif 5191 5192 #ifdef ENABLE_CLASSIC 5193 void gap_set_class_of_device(uint32_t class_of_device){ 5194 hci_stack->class_of_device = class_of_device; 5195 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5196 hci_run(); 5197 } 5198 5199 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5200 hci_stack->default_link_policy_settings = default_link_policy_settings; 5201 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5202 hci_run(); 5203 } 5204 5205 void gap_set_allow_role_switch(bool allow_role_switch){ 5206 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5207 } 5208 5209 uint8_t hci_get_allow_role_switch(void){ 5210 return hci_stack->allow_role_switch; 5211 } 5212 5213 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5214 hci_stack->link_supervision_timeout = link_supervision_timeout; 5215 } 5216 5217 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5218 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5219 } 5220 5221 uint16_t hci_automatic_flush_timeout(void){ 5222 return hci_stack->automatic_flush_timeout; 5223 } 5224 5225 void hci_disable_l2cap_timeout_check(void){ 5226 disable_l2cap_timeouts = 1; 5227 } 5228 #endif 5229 5230 #ifndef HAVE_HOST_CONTROLLER_API 5231 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5232 void hci_set_bd_addr(bd_addr_t addr){ 5233 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5234 hci_stack->custom_bd_addr_set = 1; 5235 } 5236 #endif 5237 5238 // State-Module-Driver overview 5239 // state module low-level 5240 // HCI_STATE_OFF off close 5241 // HCI_STATE_INITIALIZING, on open 5242 // HCI_STATE_WORKING, on open 5243 // HCI_STATE_HALTING, on open 5244 // HCI_STATE_SLEEPING, off/sleep close 5245 // HCI_STATE_FALLING_ASLEEP on open 5246 5247 static int hci_power_control_on(void){ 5248 5249 // power on 5250 int err = 0; 5251 if (hci_stack->control && hci_stack->control->on){ 5252 err = (*hci_stack->control->on)(); 5253 } 5254 if (err){ 5255 log_error( "POWER_ON failed"); 5256 hci_emit_hci_open_failed(); 5257 return err; 5258 } 5259 5260 // int chipset driver 5261 if (hci_stack->chipset && hci_stack->chipset->init){ 5262 hci_stack->chipset->init(hci_stack->config); 5263 } 5264 5265 // init transport 5266 if (hci_stack->hci_transport->init){ 5267 hci_stack->hci_transport->init(hci_stack->config); 5268 } 5269 5270 // open transport 5271 err = hci_stack->hci_transport->open(); 5272 if (err){ 5273 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5274 if (hci_stack->control && hci_stack->control->off){ 5275 (*hci_stack->control->off)(); 5276 } 5277 hci_emit_hci_open_failed(); 5278 return err; 5279 } 5280 return 0; 5281 } 5282 5283 static void hci_power_control_off(void){ 5284 5285 log_info("hci_power_control_off"); 5286 5287 // close low-level device 5288 hci_stack->hci_transport->close(); 5289 5290 log_info("hci_power_control_off - hci_transport closed"); 5291 5292 // power off 5293 if (hci_stack->control && hci_stack->control->off){ 5294 (*hci_stack->control->off)(); 5295 } 5296 5297 log_info("hci_power_control_off - control closed"); 5298 5299 hci_stack->state = HCI_STATE_OFF; 5300 } 5301 5302 static void hci_power_control_sleep(void){ 5303 5304 log_info("hci_power_control_sleep"); 5305 5306 #if 0 5307 // don't close serial port during sleep 5308 5309 // close low-level device 5310 hci_stack->hci_transport->close(hci_stack->config); 5311 #endif 5312 5313 // sleep mode 5314 if (hci_stack->control && hci_stack->control->sleep){ 5315 (*hci_stack->control->sleep)(); 5316 } 5317 5318 hci_stack->state = HCI_STATE_SLEEPING; 5319 } 5320 5321 static int hci_power_control_wake(void){ 5322 5323 log_info("hci_power_control_wake"); 5324 5325 // wake on 5326 if (hci_stack->control && hci_stack->control->wake){ 5327 (*hci_stack->control->wake)(); 5328 } 5329 5330 #if 0 5331 // open low-level device 5332 int err = hci_stack->hci_transport->open(hci_stack->config); 5333 if (err){ 5334 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5335 if (hci_stack->control && hci_stack->control->off){ 5336 (*hci_stack->control->off)(); 5337 } 5338 hci_emit_hci_open_failed(); 5339 return err; 5340 } 5341 #endif 5342 5343 return 0; 5344 } 5345 5346 static void hci_power_enter_initializing_state(void){ 5347 // set up state machine 5348 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5349 hci_stack->hci_packet_buffer_reserved = false; 5350 hci_stack->state = HCI_STATE_INITIALIZING; 5351 5352 #ifndef HAVE_HOST_CONTROLLER_API 5353 if (hci_stack->chipset_pre_init) { 5354 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5355 } else 5356 #endif 5357 { 5358 hci_stack->substate = HCI_INIT_SEND_RESET; 5359 } 5360 } 5361 5362 static void hci_power_enter_halting_state(void){ 5363 #ifdef ENABLE_BLE 5364 // drop entries scheduled for removal, mark others for re-adding 5365 btstack_linked_list_iterator_t it; 5366 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5367 while (btstack_linked_list_iterator_has_next(&it)){ 5368 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5369 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5370 btstack_linked_list_iterator_remove(&it); 5371 btstack_memory_whitelist_entry_free(entry); 5372 } else { 5373 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5374 } 5375 } 5376 #ifdef ENABLE_LE_CENTRAL 5377 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5378 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5379 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5380 while (btstack_linked_list_iterator_has_next(&it)){ 5381 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5382 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5383 btstack_linked_list_iterator_remove(&it); 5384 btstack_memory_periodic_advertiser_list_entry_free(entry); 5385 } else { 5386 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5387 continue; 5388 } 5389 } 5390 #endif 5391 #endif 5392 #endif 5393 // see hci_run 5394 hci_stack->state = HCI_STATE_HALTING; 5395 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5396 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5397 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5398 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5399 btstack_run_loop_add_timer(&hci_stack->timeout); 5400 } 5401 5402 // returns error 5403 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5404 int err; 5405 switch (power_mode){ 5406 case HCI_POWER_ON: 5407 err = hci_power_control_on(); 5408 if (err != 0) { 5409 log_error("hci_power_control_on() error %d", err); 5410 return err; 5411 } 5412 hci_power_enter_initializing_state(); 5413 break; 5414 case HCI_POWER_OFF: 5415 // do nothing 5416 break; 5417 case HCI_POWER_SLEEP: 5418 // do nothing (with SLEEP == OFF) 5419 break; 5420 default: 5421 btstack_assert(false); 5422 break; 5423 } 5424 return ERROR_CODE_SUCCESS; 5425 } 5426 5427 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5428 switch (power_mode){ 5429 case HCI_POWER_ON: 5430 // do nothing 5431 break; 5432 case HCI_POWER_OFF: 5433 // no connections yet, just turn it off 5434 hci_power_control_off(); 5435 break; 5436 case HCI_POWER_SLEEP: 5437 // no connections yet, just turn it off 5438 hci_power_control_sleep(); 5439 break; 5440 default: 5441 btstack_assert(false); 5442 break; 5443 } 5444 return ERROR_CODE_SUCCESS; 5445 } 5446 5447 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5448 switch (power_mode){ 5449 case HCI_POWER_ON: 5450 // do nothing 5451 break; 5452 case HCI_POWER_OFF: 5453 hci_power_enter_halting_state(); 5454 break; 5455 case HCI_POWER_SLEEP: 5456 // see hci_run 5457 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5458 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5459 break; 5460 default: 5461 btstack_assert(false); 5462 break; 5463 } 5464 return ERROR_CODE_SUCCESS; 5465 } 5466 5467 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5468 switch (power_mode){ 5469 case HCI_POWER_ON: 5470 hci_power_enter_initializing_state(); 5471 break; 5472 case HCI_POWER_OFF: 5473 // do nothing 5474 break; 5475 case HCI_POWER_SLEEP: 5476 // see hci_run 5477 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5478 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5479 break; 5480 default: 5481 btstack_assert(false); 5482 break; 5483 } 5484 return ERROR_CODE_SUCCESS; 5485 } 5486 5487 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5488 switch (power_mode){ 5489 case HCI_POWER_ON: 5490 hci_power_enter_initializing_state(); 5491 break; 5492 case HCI_POWER_OFF: 5493 hci_power_enter_halting_state(); 5494 break; 5495 case HCI_POWER_SLEEP: 5496 // do nothing 5497 break; 5498 default: 5499 btstack_assert(false); 5500 break; 5501 } 5502 return ERROR_CODE_SUCCESS; 5503 } 5504 5505 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5506 int err; 5507 switch (power_mode){ 5508 case HCI_POWER_ON: 5509 err = hci_power_control_wake(); 5510 if (err) return err; 5511 hci_power_enter_initializing_state(); 5512 break; 5513 case HCI_POWER_OFF: 5514 hci_power_enter_halting_state(); 5515 break; 5516 case HCI_POWER_SLEEP: 5517 // do nothing 5518 break; 5519 default: 5520 btstack_assert(false); 5521 break; 5522 } 5523 return ERROR_CODE_SUCCESS; 5524 } 5525 5526 int hci_power_control(HCI_POWER_MODE power_mode){ 5527 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5528 btstack_run_loop_remove_timer(&hci_stack->timeout); 5529 int err = 0; 5530 switch (hci_stack->state){ 5531 case HCI_STATE_OFF: 5532 err = hci_power_control_state_off(power_mode); 5533 break; 5534 case HCI_STATE_INITIALIZING: 5535 err = hci_power_control_state_initializing(power_mode); 5536 break; 5537 case HCI_STATE_WORKING: 5538 err = hci_power_control_state_working(power_mode); 5539 break; 5540 case HCI_STATE_HALTING: 5541 err = hci_power_control_state_halting(power_mode); 5542 break; 5543 case HCI_STATE_FALLING_ASLEEP: 5544 err = hci_power_control_state_falling_asleep(power_mode); 5545 break; 5546 case HCI_STATE_SLEEPING: 5547 err = hci_power_control_state_sleeping(power_mode); 5548 break; 5549 default: 5550 btstack_assert(false); 5551 break; 5552 } 5553 if (err != 0){ 5554 return err; 5555 } 5556 5557 // create internal event 5558 hci_emit_state(); 5559 5560 // trigger next/first action 5561 hci_run(); 5562 5563 return 0; 5564 } 5565 5566 5567 static void hci_halting_run(void) { 5568 5569 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5570 5571 hci_connection_t *connection; 5572 #ifdef ENABLE_BLE 5573 #ifdef ENABLE_LE_PERIPHERAL 5574 bool stop_advertisements; 5575 #endif 5576 #endif 5577 5578 switch (hci_stack->substate) { 5579 case HCI_HALTING_CLASSIC_STOP: 5580 #ifdef ENABLE_CLASSIC 5581 if (!hci_can_send_command_packet_now()) return; 5582 5583 if (hci_stack->connectable || hci_stack->discoverable){ 5584 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5585 hci_send_cmd(&hci_write_scan_enable, 0); 5586 return; 5587 } 5588 #endif 5589 /* fall through */ 5590 5591 case HCI_HALTING_LE_ADV_STOP: 5592 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5593 5594 #ifdef ENABLE_BLE 5595 #ifdef ENABLE_LE_PERIPHERAL 5596 if (!hci_can_send_command_packet_now()) return; 5597 5598 stop_advertisements = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5599 5600 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5601 if (hci_le_extended_advertising_supported()){ 5602 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5603 btstack_linked_list_iterator_t it; 5604 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5605 // stop all periodic advertisements and check if an extended set is active 5606 while (btstack_linked_list_iterator_has_next(&it)){ 5607 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5608 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5609 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5610 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5611 return; 5612 } 5613 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5614 stop_advertismenets = true; 5615 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5616 } 5617 } 5618 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5619 if (stop_advertismenets){ 5620 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5621 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5622 return; 5623 } 5624 } else 5625 #else /* ENABLE_LE_PERIPHERAL */ 5626 { 5627 if (stop_advertisements) { 5628 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5629 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5630 return; 5631 } 5632 } 5633 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5634 #endif /* ENABLE_LE_PERIPHERAL */ 5635 #endif /* ENABLE_BLE */ 5636 5637 /* fall through */ 5638 5639 case HCI_HALTING_LE_SCAN_STOP: 5640 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5641 if (!hci_can_send_command_packet_now()) return; 5642 5643 #ifdef ENABLE_BLE 5644 #ifdef ENABLE_LE_CENTRAL 5645 if (hci_stack->le_scanning_active){ 5646 hci_le_scan_stop(); 5647 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5648 return; 5649 } 5650 #endif 5651 #endif 5652 5653 /* fall through */ 5654 5655 case HCI_HALTING_DISCONNECT_ALL: 5656 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5657 if (!hci_can_send_command_packet_now()) return; 5658 5659 // close all open connections 5660 connection = (hci_connection_t *) hci_stack->connections; 5661 if (connection) { 5662 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5663 5664 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", (void*)connection, con_handle, connection->state); 5665 5666 // check state 5667 switch(connection->state) { 5668 case SENT_DISCONNECT: 5669 case RECEIVED_DISCONNECTION_COMPLETE: 5670 // wait until connection is gone 5671 return; 5672 default: 5673 break; 5674 } 5675 5676 // finally, send the disconnect command 5677 connection->state = SENT_DISCONNECT; 5678 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5679 return; 5680 } 5681 5682 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5683 // stop BIGs and BIG Syncs 5684 if (hci_stack->le_audio_bigs != NULL){ 5685 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5686 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5687 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5688 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5689 return; 5690 } 5691 if (hci_stack->le_audio_big_syncs != NULL){ 5692 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5693 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5694 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5695 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5696 return; 5697 } 5698 #endif 5699 5700 btstack_run_loop_remove_timer(&hci_stack->timeout); 5701 5702 // no connections left, wait a bit to assert that btstack_crypto isn't waiting for an HCI event 5703 log_info("HCI_STATE_HALTING: wait 50 ms"); 5704 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5705 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5706 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5707 btstack_run_loop_add_timer(&hci_stack->timeout); 5708 break; 5709 5710 case HCI_HALTING_W4_CLOSE_TIMER: 5711 // keep waiting 5712 break; 5713 5714 case HCI_HALTING_CLOSE: 5715 // close left over connections (that had not been properly closed before) 5716 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5717 hci_discard_connections(); 5718 5719 log_info("HCI_STATE_HALTING, calling off"); 5720 5721 // switch mode 5722 hci_power_control_off(); 5723 5724 log_info("HCI_STATE_HALTING, emitting state"); 5725 hci_emit_state(); 5726 log_info("HCI_STATE_HALTING, done"); 5727 break; 5728 5729 default: 5730 break; 5731 } 5732 } 5733 5734 static void hci_falling_asleep_run(void){ 5735 hci_connection_t * connection; 5736 switch(hci_stack->substate) { 5737 case HCI_FALLING_ASLEEP_DISCONNECT: 5738 log_info("HCI_STATE_FALLING_ASLEEP"); 5739 // close all open connections 5740 connection = (hci_connection_t *) hci_stack->connections; 5741 if (connection){ 5742 5743 // send disconnect 5744 if (!hci_can_send_command_packet_now()) return; 5745 5746 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", (void*)connection, (uint16_t)connection->con_handle); 5747 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5748 5749 // send disconnected event right away - causes higher layer connections to get closed, too. 5750 hci_shutdown_connection(connection); 5751 return; 5752 } 5753 5754 if (hci_classic_supported()){ 5755 // disable page and inquiry scan 5756 if (!hci_can_send_command_packet_now()) return; 5757 5758 log_info("HCI_STATE_HALTING, disabling inq scans"); 5759 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5760 5761 // continue in next substate 5762 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5763 break; 5764 } 5765 5766 /* fall through */ 5767 5768 case HCI_FALLING_ASLEEP_COMPLETE: 5769 log_info("HCI_STATE_HALTING, calling sleep"); 5770 // switch mode 5771 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5772 hci_emit_state(); 5773 break; 5774 5775 default: 5776 break; 5777 } 5778 } 5779 5780 #ifdef ENABLE_CLASSIC 5781 5782 static void hci_update_scan_enable(void){ 5783 // 2 = page scan, 1 = inq scan 5784 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5785 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5786 hci_run(); 5787 } 5788 5789 void gap_discoverable_control(uint8_t enable){ 5790 if (enable) enable = 1; // normalize argument 5791 5792 if (hci_stack->discoverable == enable){ 5793 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5794 return; 5795 } 5796 5797 hci_stack->discoverable = enable; 5798 hci_update_scan_enable(); 5799 } 5800 5801 void gap_connectable_control(uint8_t enable){ 5802 if (enable) enable = 1; // normalize argument 5803 5804 // don't emit event 5805 if (hci_stack->connectable == enable) return; 5806 5807 hci_stack->connectable = enable; 5808 hci_update_scan_enable(); 5809 } 5810 #endif 5811 5812 void gap_local_bd_addr(bd_addr_t address_buffer){ 5813 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5814 } 5815 5816 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5817 static void hci_host_num_completed_packets(void){ 5818 5819 // create packet manually as arrays are not supported and num_commands should not get reduced 5820 hci_reserve_packet_buffer(); 5821 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5822 5823 uint16_t size = 0; 5824 uint16_t num_handles = 0; 5825 packet[size++] = 0x35; 5826 packet[size++] = 0x0c; 5827 size++; // skip param len 5828 size++; // skip num handles 5829 5830 // add { handle, packets } entries 5831 btstack_linked_item_t * it; 5832 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5833 hci_connection_t * connection = (hci_connection_t *) it; 5834 if (connection->num_packets_completed){ 5835 little_endian_store_16(packet, size, connection->con_handle); 5836 size += 2; 5837 little_endian_store_16(packet, size, connection->num_packets_completed); 5838 size += 2; 5839 // 5840 num_handles++; 5841 connection->num_packets_completed = 0; 5842 } 5843 } 5844 5845 packet[2] = size - 3; 5846 packet[3] = num_handles; 5847 5848 hci_stack->host_completed_packets = 0; 5849 5850 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5851 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5852 5853 // release packet buffer for synchronous transport implementations 5854 if (hci_transport_synchronous()){ 5855 hci_release_packet_buffer(); 5856 hci_emit_transport_packet_sent(); 5857 } 5858 } 5859 #endif 5860 5861 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5862 UNUSED(ds); 5863 hci_stack->substate = HCI_HALTING_CLOSE; 5864 hci_halting_run(); 5865 } 5866 5867 static bool hci_run_acl_fragments(void){ 5868 if (hci_stack->acl_fragmentation_total_size > 0u) { 5869 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5870 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5871 if (connection) { 5872 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5873 hci_send_acl_packet_fragments(connection); 5874 return true; 5875 } 5876 } else { 5877 // connection gone -> discard further fragments 5878 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5879 hci_stack->acl_fragmentation_total_size = 0; 5880 hci_stack->acl_fragmentation_pos = 0; 5881 } 5882 } 5883 return false; 5884 } 5885 5886 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5887 static bool hci_run_iso_fragments(void){ 5888 if (hci_stack->iso_fragmentation_total_size > 0u) { 5889 // TODO: flow control 5890 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5891 hci_send_iso_packet_fragments(); 5892 return true; 5893 } 5894 } 5895 return false; 5896 } 5897 #endif 5898 5899 #ifdef ENABLE_CLASSIC 5900 5901 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5902 static bool hci_classic_operation_active(void) { 5903 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5904 return true; 5905 } 5906 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5907 return true; 5908 } 5909 btstack_linked_item_t * it; 5910 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5911 hci_connection_t *connection = (hci_connection_t *) it; 5912 switch (connection->state) { 5913 case SENT_CREATE_CONNECTION: 5914 case SENT_CANCEL_CONNECTION: 5915 case SENT_DISCONNECT: 5916 return true; 5917 default: 5918 break; 5919 } 5920 } 5921 return false; 5922 } 5923 #endif 5924 5925 static bool hci_run_general_gap_classic(void){ 5926 5927 // assert stack is working and classic is active 5928 if (hci_classic_supported() == false) return false; 5929 if (hci_stack->state != HCI_STATE_WORKING) return false; 5930 5931 // decline incoming connections 5932 if (hci_stack->decline_reason){ 5933 uint8_t reason = hci_stack->decline_reason; 5934 hci_stack->decline_reason = 0; 5935 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5936 return true; 5937 } 5938 5939 if (hci_stack->gap_tasks_classic != 0){ 5940 hci_run_gap_tasks_classic(); 5941 return true; 5942 } 5943 5944 // start/stop inquiry 5945 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5946 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5947 if (hci_classic_operation_active() == false) 5948 #endif 5949 { 5950 uint8_t duration = hci_stack->inquiry_state; 5951 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5952 if (hci_stack->inquiry_max_period_length != 0){ 5953 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); 5954 } else { 5955 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5956 } 5957 return true; 5958 } 5959 } 5960 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5961 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5962 hci_send_cmd(&hci_inquiry_cancel); 5963 return true; 5964 } 5965 5966 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5967 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5968 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5969 return true; 5970 } 5971 5972 // remote name request 5973 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5974 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5975 if (hci_classic_operation_active() == false) 5976 #endif 5977 { 5978 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5979 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5980 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5981 return true; 5982 } 5983 } 5984 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5985 // Local OOB data 5986 if (hci_stack->classic_read_local_oob_data){ 5987 hci_stack->classic_read_local_oob_data = false; 5988 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5989 hci_send_cmd(&hci_read_local_extended_oob_data); 5990 } else { 5991 hci_send_cmd(&hci_read_local_oob_data); 5992 } 5993 } 5994 #endif 5995 // pairing 5996 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5997 uint8_t state = hci_stack->gap_pairing_state; 5998 uint8_t pin_code[PIN_CODE_LEN]; 5999 switch (state){ 6000 case GAP_PAIRING_STATE_SEND_PIN: 6001 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6002 memset(pin_code, 0, 16); 6003 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 6004 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 6005 break; 6006 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 6007 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6008 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 6009 break; 6010 case GAP_PAIRING_STATE_SEND_PASSKEY: 6011 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6012 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 6013 break; 6014 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 6015 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6016 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 6017 break; 6018 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 6019 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6020 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 6021 break; 6022 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 6023 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6024 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 6025 break; 6026 default: 6027 break; 6028 } 6029 return true; 6030 } 6031 return false; 6032 } 6033 #endif 6034 6035 #ifdef ENABLE_BLE 6036 6037 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6038 static uint8_t hci_le_num_phys(uint8_t phys){ 6039 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 6040 btstack_assert(phys); 6041 return num_bits_set[phys]; 6042 } 6043 #endif 6044 6045 #ifdef ENABLE_LE_CENTRAL 6046 static void hci_le_scan_stop(void){ 6047 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6048 if (hci_le_extended_advertising_supported()) { 6049 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 6050 } else 6051 #endif 6052 { 6053 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 6054 } 6055 } 6056 6057 static void 6058 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 6059 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6060 if (hci_le_extended_advertising_supported()) { 6061 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6062 uint16_t le_connection_scan_interval[3]; 6063 uint16_t le_connection_scan_window[3]; 6064 uint16_t le_connection_interval_min[3]; 6065 uint16_t le_connection_interval_max[3]; 6066 uint16_t le_connection_latency[3]; 6067 uint16_t le_supervision_timeout[3]; 6068 uint16_t le_minimum_ce_length[3]; 6069 uint16_t le_maximum_ce_length[3]; 6070 6071 uint8_t i; 6072 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6073 for (i=0;i<num_phys;i++){ 6074 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6075 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6076 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6077 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6078 le_connection_latency[i] = hci_stack->le_connection_latency; 6079 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6080 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6081 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6082 } 6083 hci_send_cmd(&hci_le_extended_create_connection, 6084 initiator_filter_policy, 6085 hci_stack->le_connection_own_addr_type, // our addr type: 6086 address_type, // peer address type 6087 address, // peer bd addr 6088 hci_stack->le_connection_phys, // initiating PHY 6089 le_connection_scan_interval, // conn scan interval 6090 le_connection_scan_window, // conn scan windows 6091 le_connection_interval_min, // conn interval min 6092 le_connection_interval_max, // conn interval max 6093 le_connection_latency, // conn latency 6094 le_supervision_timeout, // conn latency 6095 le_minimum_ce_length, // min ce length 6096 le_maximum_ce_length // max ce length 6097 ); 6098 } else 6099 #endif 6100 { 6101 hci_send_cmd(&hci_le_create_connection, 6102 hci_stack->le_connection_scan_interval, // conn scan interval 6103 hci_stack->le_connection_scan_window, // conn scan windows 6104 initiator_filter_policy, // don't use whitelist 6105 address_type, // peer address type 6106 address, // peer bd addr 6107 hci_stack->le_connection_own_addr_type, // our addr type: 6108 hci_stack->le_connection_interval_min, // conn interval min 6109 hci_stack->le_connection_interval_max, // conn interval max 6110 hci_stack->le_connection_latency, // conn latency 6111 hci_stack->le_supervision_timeout, // conn latency 6112 hci_stack->le_minimum_ce_length, // min ce length 6113 hci_stack->le_maximum_ce_length // max ce length 6114 ); 6115 } 6116 } 6117 #endif 6118 6119 #ifdef ENABLE_LE_PERIPHERAL 6120 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6121 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6122 uint8_t operation = 0; 6123 if (pos == 0){ 6124 // first fragment or complete data 6125 operation |= 1; 6126 } 6127 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6128 // last fragment or complete data 6129 operation |= 2; 6130 } 6131 return operation; 6132 } 6133 #endif 6134 #endif 6135 6136 static bool hci_whitelist_modification_pending(void) { 6137 btstack_linked_list_iterator_t it; 6138 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6139 while (btstack_linked_list_iterator_has_next(&it)){ 6140 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6141 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6142 return true; 6143 } 6144 } 6145 return false; 6146 } 6147 6148 static bool hci_whitelist_modification_process(void){ 6149 // add/remove entries 6150 btstack_linked_list_iterator_t it; 6151 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6152 while (btstack_linked_list_iterator_has_next(&it)){ 6153 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6154 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6155 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6156 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6157 bd_addr_type_t address_type = entry->address_type; 6158 bd_addr_t address; 6159 memcpy(address, entry->address, 6); 6160 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6161 // remove from whitelist if not scheduled for re-addition 6162 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6163 btstack_memory_whitelist_entry_free(entry); 6164 } 6165 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6166 return true; 6167 } 6168 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6169 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6170 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6171 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6172 return true; 6173 } 6174 } 6175 return false; 6176 } 6177 6178 static bool hci_run_general_gap_le(void){ 6179 6180 btstack_linked_list_iterator_t lit; 6181 UNUSED(lit); 6182 6183 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6184 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6185 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6186 hci_stack->le_resolvable_private_address_update_s = 0; 6187 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6188 return true; 6189 } 6190 #endif 6191 6192 // Phase 1: collect what to stop 6193 6194 #ifdef ENABLE_LE_CENTRAL 6195 bool scanning_stop = false; 6196 bool connecting_stop = false; 6197 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6198 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6199 bool periodic_sync_stop = false; 6200 #endif 6201 #endif 6202 #endif 6203 6204 #ifdef ENABLE_LE_PERIPHERAL 6205 bool advertising_stop = false; 6206 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6207 le_advertising_set_t * advertising_stop_set = NULL; 6208 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6209 bool periodic_advertising_stop = false; 6210 #endif 6211 #endif 6212 #endif 6213 6214 // check if own address changes 6215 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6216 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6217 6218 // check if whitelist needs modification 6219 bool whitelist_modification_pending = hci_whitelist_modification_pending(); 6220 6221 // check if resolving list needs modification 6222 bool resolving_list_modification_pending = false; 6223 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6224 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6225 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6226 resolving_list_modification_pending = true; 6227 } 6228 #endif 6229 6230 #ifdef ENABLE_LE_CENTRAL 6231 6232 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6233 // check if periodic advertiser list needs modification 6234 bool periodic_list_modification_pending = false; 6235 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6236 while (btstack_linked_list_iterator_has_next(&lit)){ 6237 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6238 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6239 periodic_list_modification_pending = true; 6240 break; 6241 } 6242 } 6243 #endif 6244 6245 // scanning control 6246 if (hci_stack->le_scanning_active) { 6247 // stop if: 6248 // - parameter change required 6249 // - it's disabled 6250 // - whitelist change required but used for scanning 6251 // - resolving list modified 6252 // - own address changes 6253 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6254 if ((hci_stack->le_scanning_param_update) || 6255 !hci_stack->le_scanning_enabled || 6256 (scanning_uses_whitelist && whitelist_modification_pending) || 6257 resolving_list_modification_pending || 6258 random_address_change){ 6259 6260 scanning_stop = true; 6261 } 6262 } 6263 6264 // connecting control 6265 bool connecting_with_whitelist; 6266 switch (hci_stack->le_connecting_state){ 6267 case LE_CONNECTING_DIRECT: 6268 case LE_CONNECTING_WHITELIST: 6269 // stop connecting if: 6270 // - connecting uses white and whitelist modification pending 6271 // - if it got disabled 6272 // - resolving list modified 6273 // - own address changes 6274 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6275 if ((connecting_with_whitelist && whitelist_modification_pending) || 6276 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6277 resolving_list_modification_pending || 6278 random_address_change) { 6279 6280 connecting_stop = true; 6281 } 6282 break; 6283 default: 6284 break; 6285 } 6286 6287 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6288 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6289 // periodic sync control 6290 bool sync_with_advertiser_list; 6291 switch(hci_stack->le_periodic_sync_state){ 6292 case LE_CONNECTING_DIRECT: 6293 case LE_CONNECTING_WHITELIST: 6294 // stop sync if: 6295 // - sync with advertiser list and advertiser list modification pending 6296 // - if it got disabled 6297 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6298 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6299 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6300 periodic_sync_stop = true; 6301 } 6302 break; 6303 default: 6304 break; 6305 } 6306 #endif 6307 #endif 6308 6309 #endif /* ENABLE_LE_CENTRAL */ 6310 6311 #ifdef ENABLE_LE_PERIPHERAL 6312 // le advertisement control 6313 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6314 // stop if: 6315 // - parameter change required 6316 // - random address used in advertising and changes 6317 // - it's disabled 6318 // - whitelist change required but used for advertisement filter policy 6319 // - resolving list modified 6320 // - own address changes 6321 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6322 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6323 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6324 if (advertising_change || 6325 (advertising_uses_random_address && random_address_change) || 6326 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6327 (advertising_uses_whitelist && whitelist_modification_pending) || 6328 resolving_list_modification_pending || 6329 random_address_change) { 6330 6331 advertising_stop = true; 6332 } 6333 } 6334 6335 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6336 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6337 btstack_linked_list_iterator_t it; 6338 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6339 while (btstack_linked_list_iterator_has_next(&it)){ 6340 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6341 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6342 // stop if: 6343 // - parameter change required 6344 // - random address used in connectable advertising and changes 6345 // - it's disabled 6346 // - whitelist change required but used for advertisement filter policy 6347 // - resolving list modified 6348 // - own address changes 6349 // - advertisement set will be removed 6350 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6351 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6352 bool advertising_uses_random_address = 6353 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6354 advertising_connectable; 6355 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6356 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6357 bool advertising_set_random_address_change = 6358 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6359 bool advertising_set_will_be_removed = 6360 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6361 if (advertising_parameter_change || 6362 (advertising_uses_random_address && advertising_set_random_address_change) || 6363 (advertising_enabled == false) || 6364 (advertising_uses_whitelist && whitelist_modification_pending) || 6365 resolving_list_modification_pending || 6366 advertising_set_will_be_removed) { 6367 6368 advertising_stop = true; 6369 advertising_stop_set = advertising_set; 6370 break; 6371 } 6372 } 6373 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6374 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6375 // stop if: 6376 // - it's disabled 6377 // - parameter change required 6378 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6379 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6380 if ((periodic_enabled == false) || periodic_parameter_change){ 6381 periodic_advertising_stop = true; 6382 advertising_stop_set = advertising_set; 6383 } 6384 } 6385 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6386 } 6387 } 6388 #endif 6389 6390 #endif 6391 6392 6393 // Phase 2: stop everything that should be off during modifications 6394 6395 6396 // 2.1 Outgoing connection 6397 #ifdef ENABLE_LE_CENTRAL 6398 if (connecting_stop){ 6399 hci_send_cmd(&hci_le_create_connection_cancel); 6400 return true; 6401 } 6402 #endif 6403 6404 // 2.2 Scanning 6405 #ifdef ENABLE_LE_CENTRAL 6406 if (scanning_stop){ 6407 hci_stack->le_scanning_active = false; 6408 hci_le_scan_stop(); 6409 return true; 6410 } 6411 6412 // 2.3 Periodic Sync 6413 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6414 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6415 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6416 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6417 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6418 return true; 6419 } 6420 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6421 if (periodic_sync_stop){ 6422 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6423 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6424 return true; 6425 } 6426 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6427 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6428 #endif /* ENABLE_LE_CENTRAL */ 6429 6430 // 2.4 Advertising: legacy, extended, periodic 6431 #ifdef ENABLE_LE_PERIPHERAL 6432 if (advertising_stop){ 6433 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6434 if (hci_le_extended_advertising_supported()) { 6435 uint8_t advertising_stop_handle; 6436 if (advertising_stop_set != NULL){ 6437 advertising_stop_handle = advertising_stop_set->advertising_handle; 6438 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6439 } else { 6440 advertising_stop_handle = 0; 6441 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6442 } 6443 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6444 const uint16_t durations[] = { 0 }; 6445 const uint16_t max_events[] = { 0 }; 6446 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6447 } else 6448 #endif 6449 { 6450 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6451 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6452 } 6453 return true; 6454 } 6455 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6456 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6457 if (periodic_advertising_stop){ 6458 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6459 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6460 return true; 6461 } 6462 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6463 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6464 #endif /* ENABLE_LE_PERIPHERAL */ 6465 6466 6467 // Phase 3: modify 6468 6469 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6470 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6471 // GAP Privacy, notify clients upon upcoming random address change 6472 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6473 // notify might cause hci_run to get executed, check if we still can send 6474 gap_privacy_clients_notify(hci_stack->le_random_address); 6475 if (!hci_can_send_command_packet_now()) { 6476 return true; 6477 } 6478 } 6479 6480 // - wait until privacy update completed 6481 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6482 return false; 6483 } 6484 6485 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6486 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6487 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6488 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6489 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6490 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6491 #endif 6492 return true; 6493 } 6494 6495 #ifdef ENABLE_LE_CENTRAL 6496 if (hci_stack->le_scanning_param_update){ 6497 hci_stack->le_scanning_param_update = false; 6498 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6499 if (hci_le_extended_advertising_supported()){ 6500 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6501 uint8_t scan_types[2]; 6502 uint16_t scan_intervals[2]; 6503 uint16_t scan_windows[2]; 6504 6505 uint8_t i; 6506 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6507 for (i=0;i<num_phys;i++){ 6508 scan_types[i] = hci_stack->le_scan_type; 6509 scan_intervals[i] = hci_stack->le_scan_interval; 6510 scan_windows[i] = hci_stack->le_scan_window; 6511 } 6512 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6513 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6514 } else 6515 #endif 6516 { 6517 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6518 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6519 } 6520 return true; 6521 } 6522 #endif 6523 6524 #ifdef ENABLE_LE_PERIPHERAL 6525 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6526 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6527 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6528 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6529 if (hci_le_extended_advertising_supported()){ 6530 // map advertisment type to advertising event properties 6531 uint16_t adv_event_properties = 0; 6532 // 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000 6533 const uint16_t mapping[] = { 0x13, 0x15, 0x1D, 0x12, 0x10 }; 6534 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6535 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6536 } 6537 hci_stack->le_advertising_set_in_current_command = 0; 6538 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6539 0, 6540 adv_event_properties, 6541 hci_stack->le_advertisements_interval_min, 6542 hci_stack->le_advertisements_interval_max, 6543 hci_stack->le_advertisements_channel_map, 6544 hci_stack->le_advertisements_own_addr_type, 6545 hci_stack->le_advertisements_direct_address_type, 6546 hci_stack->le_advertisements_direct_address, 6547 hci_stack->le_advertisements_filter_policy, 6548 0x7f, // tx power: no preference 6549 0x01, // primary adv phy: LE 1M 6550 0, // secondary adv max skip 6551 0x01, // secondary adv phy 6552 0, // adv sid 6553 0 // scan request notification 6554 ); 6555 } else 6556 #endif 6557 { 6558 hci_send_cmd(&hci_le_set_advertising_parameters, 6559 hci_stack->le_advertisements_interval_min, 6560 hci_stack->le_advertisements_interval_max, 6561 hci_stack->le_advertisements_type, 6562 hci_stack->le_advertisements_own_addr_type, 6563 hci_stack->le_advertisements_direct_address_type, 6564 hci_stack->le_advertisements_direct_address, 6565 hci_stack->le_advertisements_channel_map, 6566 hci_stack->le_advertisements_filter_policy); 6567 } 6568 return true; 6569 } 6570 6571 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6572 // assumption: only set if extended advertising is supported 6573 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6574 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6575 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6576 return true; 6577 } 6578 #endif 6579 6580 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6581 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6582 uint8_t adv_data_clean[31]; 6583 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6584 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6585 hci_stack->le_advertisements_data_len); 6586 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6587 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6588 if (hci_le_extended_advertising_supported()){ 6589 hci_stack->le_advertising_set_in_current_command = 0; 6590 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6591 } else 6592 #endif 6593 { 6594 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6595 } 6596 return true; 6597 } 6598 6599 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6600 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6601 uint8_t scan_data_clean[31]; 6602 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6603 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6604 hci_stack->le_scan_response_data_len); 6605 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6606 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6607 if (hci_le_extended_advertising_supported()){ 6608 hci_stack->le_advertising_set_in_current_command = 0; 6609 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6610 } else 6611 #endif 6612 { 6613 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6614 } 6615 return true; 6616 } 6617 6618 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6619 if (hci_le_extended_advertising_supported()) { 6620 btstack_linked_list_iterator_t it; 6621 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6622 while (btstack_linked_list_iterator_has_next(&it)){ 6623 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6624 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6625 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6626 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6627 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6628 return true; 6629 } 6630 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6631 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6632 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6633 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6634 advertising_set->advertising_handle, 6635 advertising_set->extended_params.advertising_event_properties, 6636 advertising_set->extended_params.primary_advertising_interval_min, 6637 advertising_set->extended_params.primary_advertising_interval_max, 6638 advertising_set->extended_params.primary_advertising_channel_map, 6639 advertising_set->extended_params.own_address_type, 6640 advertising_set->extended_params.peer_address_type, 6641 advertising_set->extended_params.peer_address, 6642 advertising_set->extended_params.advertising_filter_policy, 6643 advertising_set->extended_params.advertising_tx_power, 6644 advertising_set->extended_params.primary_advertising_phy, 6645 advertising_set->extended_params.secondary_advertising_max_skip, 6646 advertising_set->extended_params.secondary_advertising_phy, 6647 advertising_set->extended_params.advertising_sid, 6648 advertising_set->extended_params.scan_request_notification_enable 6649 ); 6650 return true; 6651 } 6652 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6653 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6654 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6655 return true; 6656 } 6657 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6658 uint16_t pos = advertising_set->adv_data_pos; 6659 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6660 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6661 if ((operation & 0x02) != 0){ 6662 // last fragment or complete data 6663 operation |= 2; 6664 advertising_set->adv_data_pos = 0; 6665 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6666 } else { 6667 advertising_set->adv_data_pos += data_to_upload; 6668 } 6669 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6670 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6671 return true; 6672 } 6673 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6674 uint16_t pos = advertising_set->scan_data_pos; 6675 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6676 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6677 if ((operation & 0x02) != 0){ 6678 advertising_set->scan_data_pos = 0; 6679 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6680 } else { 6681 advertising_set->scan_data_pos += data_to_upload; 6682 } 6683 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6684 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6685 return true; 6686 } 6687 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6688 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6689 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6690 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6691 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6692 advertising_set->advertising_handle, 6693 advertising_set->periodic_params.periodic_advertising_interval_min, 6694 advertising_set->periodic_params.periodic_advertising_interval_max, 6695 advertising_set->periodic_params.periodic_advertising_properties); 6696 return true; 6697 } 6698 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6699 uint16_t pos = advertising_set->periodic_data_pos; 6700 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6701 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6702 if ((operation & 0x02) != 0){ 6703 // last fragment or complete data 6704 operation |= 2; 6705 advertising_set->periodic_data_pos = 0; 6706 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6707 } else { 6708 advertising_set->periodic_data_pos += data_to_upload; 6709 } 6710 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6711 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6712 return true; 6713 } 6714 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6715 } 6716 } 6717 #endif 6718 6719 #endif 6720 6721 #ifdef ENABLE_LE_CENTRAL 6722 // if connect with whitelist was active and is not cancelled yet, wait until next time 6723 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6724 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6725 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6726 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6727 #endif 6728 #endif 6729 6730 // LE Whitelist Management 6731 if (whitelist_modification_pending){ 6732 bool done = hci_whitelist_modification_process(); 6733 if (done) return true; 6734 } 6735 6736 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6737 // LE Resolving List Management 6738 if (resolving_list_modification_pending) { 6739 uint16_t i; 6740 uint8_t null_16[16]; 6741 uint8_t local_irk_flipped[16]; 6742 const uint8_t *local_irk; 6743 switch (hci_stack->le_resolving_list_state) { 6744 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6745 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6746 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6747 return true; 6748 case LE_RESOLVING_LIST_READ_SIZE: 6749 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6750 hci_send_cmd(&hci_le_read_resolving_list_size); 6751 return true; 6752 case LE_RESOLVING_LIST_SEND_CLEAR: 6753 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6754 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6755 sizeof(hci_stack->le_resolving_list_add_entries)); 6756 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6757 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6758 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6759 sizeof(hci_stack->le_resolving_list_remove_entries)); 6760 hci_send_cmd(&hci_le_clear_resolving_list); 6761 return true; 6762 case LE_RESOLVING_LIST_SET_IRK: 6763 // set IRK used by RPA for undirected advertising 6764 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6765 local_irk = gap_get_persistent_irk(); 6766 reverse_128(local_irk, local_irk_flipped); 6767 memset(null_16, 0, sizeof(null_16)); 6768 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6769 null_16, local_irk_flipped); 6770 return true; 6771 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6772 // first remove old entries 6773 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6774 uint8_t offset = i >> 3; 6775 uint8_t mask = 1 << (i & 7); 6776 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6777 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6778 bd_addr_t peer_identity_addreses; 6779 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6780 sm_key_t peer_irk; 6781 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6782 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6783 6784 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6785 // trigger whitelist entry 'update' (work around for controller bug) 6786 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6787 while (btstack_linked_list_iterator_has_next(&lit)) { 6788 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6789 if (entry->address_type != peer_identity_addr_type) continue; 6790 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6791 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6792 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6793 } 6794 #endif 6795 6796 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6797 peer_identity_addreses); 6798 return true; 6799 } 6800 6801 // then add new entries 6802 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6803 uint8_t offset = i >> 3; 6804 uint8_t mask = 1 << (i & 7); 6805 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6806 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6807 bd_addr_t peer_identity_addreses; 6808 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6809 sm_key_t peer_irk; 6810 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6811 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6812 if (btstack_is_null(peer_irk, 16)) continue; 6813 local_irk = gap_get_persistent_irk(); 6814 // command uses format specifier 'P' that stores 16-byte value without flip 6815 uint8_t peer_irk_flipped[16]; 6816 reverse_128(local_irk, local_irk_flipped); 6817 reverse_128(peer_irk, peer_irk_flipped); 6818 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6819 peer_irk_flipped, local_irk_flipped); 6820 return true; 6821 } 6822 6823 // finally, set privacy mode 6824 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6825 uint8_t offset = i >> 3; 6826 uint8_t mask = 1 << (i & 7); 6827 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6828 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6829 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6830 // Network Privacy Mode is default 6831 continue; 6832 } 6833 bd_addr_t peer_identity_address; 6834 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6835 sm_key_t peer_irk; 6836 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6837 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6838 if (btstack_is_null(peer_irk, 16)) continue; 6839 // command uses format specifier 'P' that stores 16-byte value without flip 6840 uint8_t peer_irk_flipped[16]; 6841 reverse_128(peer_irk, peer_irk_flipped); 6842 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6843 return true; 6844 } 6845 break; 6846 6847 default: 6848 break; 6849 } 6850 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6851 } 6852 #endif 6853 6854 #ifdef ENABLE_LE_CENTRAL 6855 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6856 // LE Whitelist Management 6857 if (periodic_list_modification_pending){ 6858 // add/remove entries 6859 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6860 while (btstack_linked_list_iterator_has_next(&lit)){ 6861 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6862 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6863 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6864 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6865 return true; 6866 } 6867 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6868 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6869 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6870 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6871 return true; 6872 } 6873 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6874 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6875 btstack_memory_periodic_advertiser_list_entry_free(entry); 6876 } 6877 } 6878 } 6879 #endif 6880 #endif 6881 6882 #ifdef ENABLE_LE_CENTRAL 6883 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6884 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6885 if (hci_stack->le_past_set_default_params){ 6886 hci_stack->le_past_set_default_params = false; 6887 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6888 hci_stack->le_past_mode, 6889 hci_stack->le_past_skip, 6890 hci_stack->le_past_sync_timeout, 6891 hci_stack->le_past_cte_type); 6892 return true; 6893 } 6894 #endif 6895 #endif 6896 #endif 6897 6898 // postpone all actions until stack is fully working 6899 if (hci_stack->state != HCI_STATE_WORKING) return false; 6900 6901 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6902 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6903 6904 // Phase 4: restore state 6905 6906 #ifdef ENABLE_LE_CENTRAL 6907 // re-start scanning 6908 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6909 hci_stack->le_scanning_active = true; 6910 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6911 if (hci_le_extended_advertising_supported()){ 6912 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6913 } else 6914 #endif 6915 { 6916 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6917 } 6918 return true; 6919 } 6920 #endif 6921 6922 #ifdef ENABLE_LE_CENTRAL 6923 // re-start connecting 6924 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6925 bd_addr_t null_addr; 6926 memset(null_addr, 0, 6); 6927 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6928 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6929 hci_send_le_create_connection(1, 0, null_addr); 6930 return true; 6931 } 6932 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6933 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6934 switch(hci_stack->le_periodic_sync_request){ 6935 case LE_CONNECTING_DIRECT: 6936 case LE_CONNECTING_WHITELIST: 6937 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6938 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6939 hci_stack->le_periodic_sync_options, 6940 hci_stack->le_periodic_sync_advertising_sid, 6941 hci_stack->le_periodic_sync_advertiser_address_type, 6942 hci_stack->le_periodic_sync_advertiser_address, 6943 hci_stack->le_periodic_sync_skip, 6944 hci_stack->le_periodic_sync_timeout, 6945 hci_stack->le_periodic_sync_cte_type); 6946 return true; 6947 default: 6948 break; 6949 } 6950 } 6951 #endif 6952 #endif 6953 6954 #ifdef ENABLE_LE_PERIPHERAL 6955 // re-start advertising 6956 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6957 // check if advertisements should be enabled given 6958 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6959 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6960 6961 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6962 if (hci_le_extended_advertising_supported()){ 6963 const uint8_t advertising_handles[] = { 0 }; 6964 const uint16_t durations[] = { 0 }; 6965 const uint16_t max_events[] = { 0 }; 6966 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6967 } else 6968 #endif 6969 { 6970 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6971 } 6972 return true; 6973 } 6974 6975 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6976 if (hci_le_extended_advertising_supported()) { 6977 btstack_linked_list_iterator_t it; 6978 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6979 while (btstack_linked_list_iterator_has_next(&it)) { 6980 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6981 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6982 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6983 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6984 const uint16_t durations[] = { advertising_set->enable_timeout }; 6985 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6986 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6987 return true; 6988 } 6989 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6990 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6991 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6992 uint8_t enable = 1; 6993 if (advertising_set->periodic_include_adi){ 6994 enable |= 2; 6995 } 6996 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6997 return true; 6998 } 6999 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7000 } 7001 } 7002 #endif 7003 #endif 7004 7005 return false; 7006 } 7007 7008 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7009 static bool hci_run_iso_tasks(void){ 7010 btstack_linked_list_iterator_t it; 7011 7012 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 7013 return false; 7014 } 7015 7016 // BIG 7017 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 7018 while (btstack_linked_list_iterator_has_next(&it)){ 7019 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 7020 switch (big->state){ 7021 case LE_AUDIO_BIG_STATE_CREATE: 7022 hci_stack->iso_active_operation_group_id = big->params->big_handle; 7023 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7024 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7025 hci_send_cmd(&hci_le_create_big, 7026 big->params->big_handle, 7027 big->params->advertising_handle, 7028 big->params->num_bis, 7029 big->params->sdu_interval_us, 7030 big->params->max_sdu, 7031 big->params->max_transport_latency_ms, 7032 big->params->rtn, 7033 big->params->phy, 7034 big->params->packing, 7035 big->params->framing, 7036 big->params->encryption, 7037 big->params->broadcast_code); 7038 return true; 7039 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7040 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7041 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); 7042 return true; 7043 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7044 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7045 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 7046 return true; 7047 case LE_AUDIO_BIG_STATE_TERMINATE: 7048 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7049 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7050 return true; 7051 default: 7052 break; 7053 } 7054 } 7055 7056 // BIG Sync 7057 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 7058 while (btstack_linked_list_iterator_has_next(&it)){ 7059 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 7060 switch (big_sync->state){ 7061 case LE_AUDIO_BIG_STATE_CREATE: 7062 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 7063 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7064 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7065 hci_send_cmd(&hci_le_big_create_sync, 7066 big_sync->params->big_handle, 7067 big_sync->params->sync_handle, 7068 big_sync->params->encryption, 7069 big_sync->params->broadcast_code, 7070 big_sync->params->mse, 7071 big_sync->params->big_sync_timeout_10ms, 7072 big_sync->params->num_bis, 7073 big_sync->params->bis_indices); 7074 return true; 7075 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7076 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7077 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); 7078 return true; 7079 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7080 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7081 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7082 return true; 7083 case LE_AUDIO_BIG_STATE_TERMINATE: 7084 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7085 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7086 return true; 7087 default: 7088 break; 7089 } 7090 } 7091 7092 // CIG 7093 bool cig_active; 7094 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7095 while (btstack_linked_list_iterator_has_next(&it)) { 7096 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7097 uint8_t i; 7098 // Set CIG Parameters 7099 uint8_t cis_id[MAX_NR_CIS]; 7100 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7101 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7102 uint8_t phy_c_to_p[MAX_NR_CIS]; 7103 uint8_t phy_p_to_c[MAX_NR_CIS]; 7104 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7105 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7106 switch (cig->state) { 7107 case LE_AUDIO_CIG_STATE_CREATE: 7108 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7109 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7110 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7111 le_audio_cig_params_t * params = cig->params; 7112 for (i = 0; i < params->num_cis; i++) { 7113 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7114 cis_id[i] = cis_params->cis_id; 7115 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7116 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7117 phy_c_to_p[i] = cis_params->phy_c_to_p; 7118 phy_p_to_c[i] = cis_params->phy_p_to_c; 7119 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7120 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7121 } 7122 hci_send_cmd(&hci_le_set_cig_parameters, 7123 cig->cig_id, 7124 params->sdu_interval_c_to_p, 7125 params->sdu_interval_p_to_c, 7126 params->worst_case_sca, 7127 params->packing, 7128 params->framing, 7129 params->max_transport_latency_c_to_p, 7130 params->max_transport_latency_p_to_c, 7131 params->num_cis, 7132 cis_id, 7133 max_sdu_c_to_p, 7134 max_sdu_p_to_c, 7135 phy_c_to_p, 7136 phy_p_to_c, 7137 rtn_c_to_p, 7138 rtn_p_to_c 7139 ); 7140 return true; 7141 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7142 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7143 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7144 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7145 for (i=0;i<cig->num_cis;i++){ 7146 cig->cis_setup_active[i] = true; 7147 } 7148 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7149 return true; 7150 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7151 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7152 // find next path to setup 7153 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7154 if (cig->cis_established[cis_index] == false) { 7155 continue; 7156 } 7157 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7158 bool setup = true; 7159 if (cis_direction == 0){ 7160 // 0 - input - host to controller 7161 // we are central => central to peripheral 7162 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7163 } else { 7164 // 1 - output - controller to host 7165 // we are central => peripheral to central 7166 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7167 } 7168 if (setup){ 7169 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7170 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7171 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7172 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); 7173 return true; 7174 } 7175 cig->state_vars.next_cis++; 7176 } 7177 // emit done 7178 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7179 break; 7180 case LE_AUDIO_CIG_STATE_REMOVE: 7181 // check if CIG Active 7182 cig_active = false; 7183 for (i = 0; i < cig->num_cis; i++) { 7184 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7185 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7186 if (stream != NULL){ 7187 cig_active = true; 7188 break; 7189 } 7190 } 7191 } 7192 if (cig_active == false){ 7193 btstack_linked_list_iterator_remove(&it); 7194 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7195 return true; 7196 } 7197 default: 7198 break; 7199 } 7200 } 7201 7202 // CIS Accept/Reject/Setup ISO Path/Close 7203 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7204 while (btstack_linked_list_iterator_has_next(&it)) { 7205 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7206 hci_con_handle_t con_handle; 7207 switch (iso_stream->state){ 7208 case HCI_ISO_STREAM_W2_ACCEPT: 7209 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7210 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7211 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7212 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7213 return true; 7214 case HCI_ISO_STREAM_W2_REJECT: 7215 con_handle = iso_stream->cis_handle; 7216 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7217 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7218 hci_iso_stream_finalize(iso_stream); 7219 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7220 return true; 7221 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7222 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7223 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7224 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7225 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); 7226 return true; 7227 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7228 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7229 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7230 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7231 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); 7232 return true; 7233 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7234 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7235 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7236 return true; 7237 default: 7238 break; 7239 } 7240 } 7241 7242 return false; 7243 } 7244 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7245 #endif 7246 7247 static bool hci_run_general_pending_commands(void){ 7248 btstack_linked_item_t * it; 7249 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7250 hci_connection_t * connection = (hci_connection_t *) it; 7251 7252 switch(connection->state){ 7253 case SEND_CREATE_CONNECTION: 7254 switch(connection->address_type){ 7255 #ifdef ENABLE_CLASSIC 7256 case BD_ADDR_TYPE_ACL: 7257 log_info("sending hci_create_connection"); 7258 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7259 break; 7260 #endif 7261 default: 7262 #ifdef ENABLE_BLE 7263 #ifdef ENABLE_LE_CENTRAL 7264 log_info("sending hci_le_create_connection"); 7265 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7266 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7267 hci_send_le_create_connection(0, connection->address_type, connection->address); 7268 connection->state = SENT_CREATE_CONNECTION; 7269 #endif 7270 #endif 7271 break; 7272 } 7273 return true; 7274 7275 #ifdef ENABLE_CLASSIC 7276 case RECEIVED_CONNECTION_REQUEST: 7277 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7278 log_info("sending hci_accept_connection_request"); 7279 connection->state = ACCEPTED_CONNECTION_REQUEST; 7280 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7281 return true; 7282 } 7283 break; 7284 #endif 7285 case SEND_DISCONNECT: 7286 connection->state = SENT_DISCONNECT; 7287 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7288 return true; 7289 7290 default: 7291 break; 7292 } 7293 7294 // no further commands if connection is about to get shut down 7295 if (connection->state == SENT_DISCONNECT) continue; 7296 7297 #ifdef ENABLE_CLASSIC 7298 7299 // Handling link key request requires remote supported features 7300 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7301 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7302 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7303 7304 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7305 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7306 if (have_link_key && security_level_sufficient){ 7307 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7308 } else { 7309 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7310 } 7311 return true; 7312 } 7313 7314 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7315 log_info("denying to pin request"); 7316 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7317 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7318 return true; 7319 } 7320 7321 // security assessment requires remote features 7322 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7323 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7324 hci_ssp_assess_security_on_io_cap_request(connection); 7325 // 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 7326 } 7327 7328 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7329 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7330 // set authentication requirements: 7331 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7332 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7333 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7334 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7335 authreq |= 1; 7336 } 7337 bool bonding = hci_stack->bondable; 7338 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7339 // if we have received IO Cap Response, we're in responder role 7340 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7341 if (bonding && !remote_bonding){ 7342 log_info("Remote not bonding, dropping local flag"); 7343 bonding = false; 7344 } 7345 } 7346 if (bonding){ 7347 if (connection->bonding_flags & BONDING_DEDICATED){ 7348 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7349 } else { 7350 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7351 } 7352 } 7353 uint8_t have_oob_data = 0; 7354 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7355 if (connection->classic_oob_c_192 != NULL){ 7356 have_oob_data |= 1; 7357 } 7358 if (connection->classic_oob_c_256 != NULL){ 7359 have_oob_data |= 2; 7360 } 7361 #endif 7362 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7363 return true; 7364 } 7365 7366 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7367 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7368 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7369 return true; 7370 } 7371 7372 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7373 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7374 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7375 const uint8_t zero[16] = { 0 }; 7376 const uint8_t * r_192 = zero; 7377 const uint8_t * c_192 = zero; 7378 const uint8_t * r_256 = zero; 7379 const uint8_t * c_256 = zero; 7380 // verify P-256 OOB 7381 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7382 c_256 = connection->classic_oob_c_256; 7383 if (connection->classic_oob_r_256 != NULL) { 7384 r_256 = connection->classic_oob_r_256; 7385 } 7386 } 7387 // verify P-192 OOB 7388 if ((connection->classic_oob_c_192 != NULL)) { 7389 c_192 = connection->classic_oob_c_192; 7390 if (connection->classic_oob_r_192 != NULL) { 7391 r_192 = connection->classic_oob_r_192; 7392 } 7393 } 7394 7395 // assess security 7396 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7397 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7398 if (need_level_4 && !can_reach_level_4){ 7399 log_info("Level 4 required, but not possible -> abort"); 7400 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7401 // send oob negative reply 7402 c_256 = NULL; 7403 c_192 = NULL; 7404 } 7405 7406 // Reply 7407 if (c_256 != zero) { 7408 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7409 } else if (c_192 != zero){ 7410 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7411 } else { 7412 hci_stack->classic_oob_con_handle = connection->con_handle; 7413 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7414 } 7415 return true; 7416 } 7417 #endif 7418 7419 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7420 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7421 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7422 return true; 7423 } 7424 7425 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7426 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7427 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7428 return true; 7429 } 7430 7431 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7432 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7433 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7434 return true; 7435 } 7436 7437 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7438 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7439 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7440 connection->state = SENT_DISCONNECT; 7441 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7442 return true; 7443 } 7444 7445 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7446 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7447 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7448 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7449 return true; 7450 } 7451 7452 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7453 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7454 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7455 return true; 7456 } 7457 7458 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7459 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7460 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7461 return true; 7462 } 7463 7464 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7465 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7466 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7467 return true; 7468 } 7469 7470 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7471 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7472 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7473 return true; 7474 } 7475 7476 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7477 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7478 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7479 return true; 7480 } 7481 #endif 7482 7483 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7484 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7485 #ifdef ENABLE_CLASSIC 7486 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7487 #endif 7488 if (connection->state != SENT_DISCONNECT){ 7489 connection->state = SENT_DISCONNECT; 7490 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7491 return true; 7492 } 7493 } 7494 7495 #ifdef ENABLE_CLASSIC 7496 uint16_t sniff_min_interval; 7497 switch (connection->sniff_min_interval){ 7498 case 0: 7499 break; 7500 case 0xffff: 7501 connection->sniff_min_interval = 0; 7502 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7503 return true; 7504 default: 7505 sniff_min_interval = connection->sniff_min_interval; 7506 connection->sniff_min_interval = 0; 7507 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7508 return true; 7509 } 7510 7511 if (connection->sniff_subrating_max_latency != 0xffff){ 7512 uint16_t max_latency = connection->sniff_subrating_max_latency; 7513 connection->sniff_subrating_max_latency = 0; 7514 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7515 return true; 7516 } 7517 7518 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7519 uint8_t service_type = (uint8_t) connection->qos_service_type; 7520 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7521 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); 7522 return true; 7523 } 7524 7525 if (connection->request_role != HCI_ROLE_INVALID){ 7526 hci_role_t role = connection->request_role; 7527 connection->request_role = HCI_ROLE_INVALID; 7528 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7529 return true; 7530 } 7531 #endif 7532 7533 if (connection->gap_connection_tasks != 0){ 7534 #ifdef ENABLE_CLASSIC 7535 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7536 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7537 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7538 return true; 7539 } 7540 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7541 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7542 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7543 return true; 7544 } 7545 #endif 7546 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7547 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7548 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7549 return true; 7550 } 7551 #ifdef ENABLE_BLE 7552 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7553 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7554 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7555 return true; 7556 } 7557 #endif 7558 } 7559 7560 #ifdef ENABLE_BLE 7561 switch (connection->le_con_parameter_update_state){ 7562 // response to L2CAP CON PARAMETER UPDATE REQUEST 7563 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7564 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7565 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7566 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7567 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7568 return true; 7569 case CON_PARAMETER_UPDATE_REPLY: 7570 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7571 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7572 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7573 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7574 return true; 7575 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7576 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7577 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7578 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7579 return true; 7580 default: 7581 break; 7582 } 7583 if (connection->le_phy_update_all_phys != 0xffu){ 7584 uint8_t all_phys = connection->le_phy_update_all_phys; 7585 connection->le_phy_update_all_phys = 0xff; 7586 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); 7587 return true; 7588 } 7589 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7590 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7591 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7592 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7593 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7594 return true; 7595 } 7596 if (connection->le_past_advertising_handle != 0xff){ 7597 uint8_t advertising_handle = connection->le_past_advertising_handle; 7598 connection->le_past_advertising_handle = 0xff; 7599 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7600 return true; 7601 } 7602 #endif 7603 #endif 7604 } 7605 return false; 7606 } 7607 7608 static void hci_run(void){ 7609 7610 // stack state sub statemachines 7611 switch (hci_stack->state) { 7612 case HCI_STATE_INITIALIZING: 7613 hci_initializing_run(); 7614 break; 7615 case HCI_STATE_HALTING: 7616 hci_halting_run(); 7617 break; 7618 case HCI_STATE_FALLING_ASLEEP: 7619 hci_falling_asleep_run(); 7620 break; 7621 default: 7622 break; 7623 } 7624 7625 // allow to run after initialization to working transition 7626 if (hci_stack->state != HCI_STATE_WORKING){ 7627 return; 7628 } 7629 7630 bool done; 7631 7632 // send continuation fragments first, as they block the prepared packet buffer 7633 done = hci_run_acl_fragments(); 7634 if (done) return; 7635 7636 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7637 done = hci_run_iso_fragments(); 7638 if (done) return; 7639 #endif 7640 7641 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7642 // send host num completed packets next as they don't require num_cmd_packets > 0 7643 if (!hci_can_send_command_packet_transport()) return; 7644 if (hci_stack->host_completed_packets){ 7645 hci_host_num_completed_packets(); 7646 return; 7647 } 7648 #endif 7649 7650 if (!hci_can_send_command_packet_now()) return; 7651 7652 // global/non-connection oriented commands 7653 7654 7655 #ifdef ENABLE_CLASSIC 7656 // general gap classic 7657 done = hci_run_general_gap_classic(); 7658 if (done) return; 7659 #endif 7660 7661 #ifdef ENABLE_BLE 7662 // general gap le 7663 done = hci_run_general_gap_le(); 7664 if (done) return; 7665 7666 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7667 // ISO related tasks, e.g. BIG create/terminate/sync 7668 done = hci_run_iso_tasks(); 7669 if (done) return; 7670 #endif 7671 #endif 7672 7673 // send pending HCI commands 7674 hci_run_general_pending_commands(); 7675 } 7676 7677 #ifdef ENABLE_CLASSIC 7678 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7679 // bits 6-9 are 'don't use' 7680 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7681 7682 // restrict packet types to local and remote supported 7683 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7684 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7685 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7686 } 7687 #endif 7688 7689 // funnel for sending cmd packet using single outgoing buffer 7690 static uint8_t hci_send_prepared_cmd_packet(void) { 7691 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7692 // cache opcode 7693 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7694 // get size 7695 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7696 // send packet 7697 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7698 // release packet buffer on error or for synchronous transport implementations 7699 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7700 hci_release_packet_buffer(); 7701 } 7702 return status; 7703 } 7704 7705 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7706 // house-keeping 7707 7708 #ifdef ENABLE_CLASSIC 7709 bd_addr_t addr; 7710 hci_connection_t * conn; 7711 #endif 7712 #ifdef ENABLE_LE_CENTRAL 7713 uint8_t initiator_filter_policy; 7714 #endif 7715 7716 uint16_t opcode = little_endian_read_16(packet, 0); 7717 switch (opcode) { 7718 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7719 hci_stack->loopback_mode = packet[3]; 7720 break; 7721 7722 #ifdef ENABLE_CLASSIC 7723 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7724 reverse_bd_addr(&packet[3], addr); 7725 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7726 7727 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7728 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7729 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7730 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7731 } 7732 7733 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7734 if (!conn) { 7735 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7736 if (!conn) { 7737 // notify client that alloc failed 7738 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7739 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7740 } 7741 conn->state = SEND_CREATE_CONNECTION; 7742 } 7743 7744 log_info("conn state %u", conn->state); 7745 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7746 switch (conn->state) { 7747 // if connection active exists 7748 case OPEN: 7749 // and OPEN, emit connection complete command 7750 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7751 // packet not sent to controller 7752 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7753 case RECEIVED_DISCONNECTION_COMPLETE: 7754 // create connection triggered in disconnect complete event, let's do it now 7755 break; 7756 case SEND_CREATE_CONNECTION: 7757 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7758 if (hci_classic_operation_active()){ 7759 return ERROR_CODE_SUCCESS; 7760 } 7761 #endif 7762 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7763 break; 7764 default: 7765 // otherwise, just ignore as it is already in the open process 7766 // packet not sent to controller 7767 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7768 } 7769 conn->state = SENT_CREATE_CONNECTION; 7770 7771 // track outgoing connection 7772 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7773 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7774 break; 7775 7776 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7777 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7778 if (conn == NULL) { 7779 // neither SCO nor ACL connection for con handle 7780 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7781 } else { 7782 uint16_t remote_supported_sco_packets; 7783 switch (conn->address_type){ 7784 case BD_ADDR_TYPE_ACL: 7785 // assert SCO connection does not exit 7786 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7787 return ERROR_CODE_COMMAND_DISALLOWED; 7788 } 7789 // cache remote sco packet types 7790 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7791 7792 // allocate connection struct 7793 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7794 HCI_ROLE_MASTER); 7795 if (!conn) { 7796 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7797 } 7798 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7799 break; 7800 case BD_ADDR_TYPE_SCO: 7801 // update of existing SCO connection 7802 break; 7803 default: 7804 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7805 } 7806 } 7807 7808 // conn refers to hci connection of type sco now 7809 7810 conn->state = SENT_CREATE_CONNECTION; 7811 7812 // track outgoing connection to handle command status with error 7813 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7814 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7815 7816 // setup_synchronous_connection? Voice setting at offset 22 7817 // TODO: compare to current setting if sco connection already active 7818 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7819 7820 // derive sco payload length from packet types 7821 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7822 break; 7823 7824 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7825 // get SCO connection 7826 reverse_bd_addr(&packet[3], addr); 7827 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7828 if (conn == NULL){ 7829 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7830 } 7831 7832 conn->state = ACCEPTED_CONNECTION_REQUEST; 7833 7834 // track outgoing connection to handle command status with error 7835 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7836 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7837 7838 // accept_synchronous_connection? Voice setting at offset 18 7839 // TODO: compare to current setting if sco connection already active 7840 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7841 7842 // derive sco payload length from packet types 7843 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7844 break; 7845 #endif 7846 7847 #ifdef ENABLE_BLE 7848 #ifdef ENABLE_LE_CENTRAL 7849 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7850 // white list used? 7851 initiator_filter_policy = packet[7]; 7852 switch (initiator_filter_policy) { 7853 case 0: 7854 // whitelist not used 7855 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7856 break; 7857 case 1: 7858 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7859 break; 7860 default: 7861 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7862 break; 7863 } 7864 // track outgoing connection 7865 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7866 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7867 break; 7868 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7869 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7870 // white list used? 7871 initiator_filter_policy = packet[3]; 7872 switch (initiator_filter_policy) { 7873 case 0: 7874 // whitelist not used 7875 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7876 break; 7877 case 1: 7878 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7879 break; 7880 default: 7881 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7882 break; 7883 } 7884 // track outgoing connection 7885 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7886 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7887 break; 7888 #endif 7889 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7890 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7891 break; 7892 #endif 7893 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7894 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7895 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7896 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7897 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7898 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7899 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7900 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7901 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7902 case HCI_OPCODE_HCI_LE_READ_PHY: 7903 case HCI_OPCODE_HCI_LE_SET_PHY: 7904 // conection handle is first command parameter 7905 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7906 break; 7907 #endif 7908 #endif /* ENABLE_BLE */ 7909 default: 7910 break; 7911 } 7912 7913 hci_stack->num_cmd_packets--; 7914 7915 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7916 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7917 uint8_t status; 7918 if (err == 0){ 7919 status = ERROR_CODE_SUCCESS; 7920 } else { 7921 status = ERROR_CODE_HARDWARE_FAILURE; 7922 } 7923 return status; 7924 } 7925 7926 // disconnect because of security block 7927 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7928 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7929 if (!connection) return; 7930 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7931 } 7932 7933 7934 // Configure Secure Simple Pairing 7935 7936 #ifdef ENABLE_CLASSIC 7937 7938 // enable will enable SSP during init 7939 void gap_ssp_set_enable(int enable){ 7940 hci_stack->ssp_enable = enable; 7941 } 7942 7943 static int hci_local_ssp_activated(void){ 7944 return gap_ssp_supported() && hci_stack->ssp_enable; 7945 } 7946 7947 // if set, BTstack will respond to io capability request using authentication requirement 7948 void gap_ssp_set_io_capability(int io_capability){ 7949 hci_stack->ssp_io_capability = io_capability; 7950 } 7951 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7952 hci_stack->ssp_authentication_requirement = authentication_requirement; 7953 } 7954 7955 // if set, BTstack will confirm a numeric comparison and enter '000000' if requested 7956 void gap_ssp_set_auto_accept(int auto_accept){ 7957 hci_stack->ssp_auto_accept = auto_accept; 7958 } 7959 7960 void gap_secure_connections_enable(bool enable){ 7961 hci_stack->secure_connections_enable = enable; 7962 } 7963 bool gap_secure_connections_active(void){ 7964 return hci_stack->secure_connections_active; 7965 } 7966 7967 #endif 7968 7969 // va_list part of hci_send_cmd 7970 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7971 if (!hci_can_send_command_packet_now()){ 7972 log_error("hci_send_cmd called but cannot send packet now"); 7973 return ERROR_CODE_COMMAND_DISALLOWED; 7974 } 7975 7976 hci_reserve_packet_buffer(); 7977 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7978 return hci_send_prepared_cmd_packet(); 7979 } 7980 7981 /** 7982 * pre: num_commands >= 0 - it's allowed to send a command to the controller 7983 */ 7984 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7985 va_list argptr; 7986 va_start(argptr, cmd); 7987 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7988 va_end(argptr); 7989 return status; 7990 } 7991 7992 // Forward HCI events and create non-HCI events 7993 7994 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7995 // dump packet 7996 if (dump) { 7997 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7998 } 7999 8000 // dispatch to all event handlers 8001 btstack_linked_list_iterator_t it; 8002 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 8003 while (btstack_linked_list_iterator_has_next(&it)){ 8004 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 8005 entry->callback(HCI_EVENT_PACKET, 0, event, size); 8006 } 8007 } 8008 8009 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump){ 8010 #ifndef ENABLE_LOG_BTSTACK_EVENTS 8011 dump = 0; 8012 #endif 8013 hci_emit_event(event, size, dump); 8014 } 8015 8016 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 8017 if (!hci_stack->acl_packet_handler) return; 8018 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 8019 } 8020 8021 #ifdef ENABLE_CLASSIC 8022 static void hci_notify_if_sco_can_send_now(void){ 8023 // notify SCO sender if waiting 8024 if (!hci_stack->sco_waiting_for_can_send_now) return; 8025 if (hci_can_send_sco_packet_now()){ 8026 hci_stack->sco_waiting_for_can_send_now = 0; 8027 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 8028 hci_dump_btstack_event(event, sizeof(event)); 8029 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 8030 } 8031 } 8032 8033 // parsing end emitting has been merged to reduce code size 8034 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 8035 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 8036 8037 uint8_t * eir_data; 8038 ad_context_t context; 8039 const uint8_t * name; 8040 uint8_t name_len; 8041 8042 if (size < 3) return; 8043 8044 int event_type = hci_event_packet_get_type(packet); 8045 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 8046 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 8047 8048 switch (event_type){ 8049 case HCI_EVENT_INQUIRY_RESULT: 8050 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8051 if (size != (3 + (num_responses * 14))) return; 8052 break; 8053 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8054 if (size != 257) return; 8055 if (num_responses != 1) return; 8056 break; 8057 default: 8058 return; 8059 } 8060 8061 // event[1] is set at the end 8062 int i; 8063 for (i=0; i<num_responses;i++){ 8064 memset(event, 0, sizeof(event)); 8065 event[0] = GAP_EVENT_INQUIRY_RESULT; 8066 uint8_t event_size = 27; // if name is not set by EIR 8067 8068 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 8069 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 8070 (void)memcpy(&event[9], 8071 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 8072 3); // class of device 8073 (void)memcpy(&event[12], 8074 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 8075 2); // clock offset 8076 8077 switch (event_type){ 8078 case HCI_EVENT_INQUIRY_RESULT: 8079 // 14,15,16,17 = 0, size 18 8080 break; 8081 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8082 event[14] = 1; 8083 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8084 // 16,17 = 0, size 18 8085 break; 8086 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8087 event[14] = 1; 8088 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8089 // EIR packets only contain a single inquiry response 8090 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8091 name = NULL; 8092 // Iterate over EIR data 8093 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8094 uint8_t data_type = ad_iterator_get_data_type(&context); 8095 uint8_t data_size = ad_iterator_get_data_len(&context); 8096 const uint8_t * data = ad_iterator_get_data(&context); 8097 // Prefer Complete Local Name over Shortened Local Name 8098 switch (data_type){ 8099 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8100 if (name) continue; 8101 /* fall through */ 8102 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8103 name = data; 8104 name_len = data_size; 8105 break; 8106 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8107 if (data_size != 8) break; 8108 event[16] = 1; 8109 memcpy(&event[17], data, 8); 8110 break; 8111 default: 8112 break; 8113 } 8114 } 8115 if (name){ 8116 event[25] = 1; 8117 // truncate name if needed 8118 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8119 event[26] = len; 8120 (void)memcpy(&event[27], name, len); 8121 event_size += len; 8122 } 8123 break; 8124 default: 8125 return; 8126 } 8127 event[1] = event_size - 2; 8128 hci_emit_btstack_event(event, event_size, 1); 8129 } 8130 } 8131 #endif 8132 8133 void hci_emit_state(void){ 8134 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8135 uint8_t event[3]; 8136 event[0] = BTSTACK_EVENT_STATE; 8137 event[1] = sizeof(event) - 2u; 8138 event[2] = hci_stack->state; 8139 hci_emit_btstack_event(event, sizeof(event), 1); 8140 } 8141 8142 #ifdef ENABLE_CLASSIC 8143 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8144 uint8_t event[13]; 8145 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8146 event[1] = sizeof(event) - 2; 8147 event[2] = status; 8148 little_endian_store_16(event, 3, con_handle); 8149 reverse_bd_addr(address, &event[5]); 8150 event[11] = 1; // ACL connection 8151 event[12] = 0; // encryption disabled 8152 hci_emit_btstack_event(event, sizeof(event), 1); 8153 } 8154 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8155 if (disable_l2cap_timeouts) return; 8156 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8157 uint8_t event[4]; 8158 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8159 event[1] = sizeof(event) - 2; 8160 little_endian_store_16(event, 2, conn->con_handle); 8161 hci_emit_btstack_event(event, sizeof(event), 1); 8162 } 8163 #endif 8164 8165 #ifdef ENABLE_BLE 8166 #ifdef ENABLE_LE_CENTRAL 8167 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){ 8168 uint8_t hci_event[21]; 8169 hci_event[0] = HCI_EVENT_LE_META; 8170 hci_event[1] = sizeof(hci_event) - 2u; 8171 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8172 hci_event[3] = status; 8173 little_endian_store_16(hci_event, 4, con_handle); 8174 hci_event[6] = 0; // TODO: role 8175 hci_event[7] = address_type; 8176 reverse_bd_addr(address, &hci_event[8]); 8177 little_endian_store_16(hci_event, 14, 0); // interval 8178 little_endian_store_16(hci_event, 16, 0); // latency 8179 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8180 hci_event[20] = 0; // master clock accuracy 8181 hci_emit_btstack_event(hci_event, sizeof(hci_event), 1); 8182 // emit GAP event, too 8183 uint8_t gap_event[36]; 8184 hci_create_gap_connection_complete_event(hci_event, gap_event); 8185 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 8186 } 8187 #endif 8188 #endif 8189 8190 static void hci_emit_transport_packet_sent(void){ 8191 // notify upper stack that it might be possible to send again 8192 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8193 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 8194 } 8195 8196 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8197 uint8_t event[6]; 8198 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8199 event[1] = sizeof(event) - 2u; 8200 event[2] = 0; // status = OK 8201 little_endian_store_16(event, 3, con_handle); 8202 event[5] = reason; 8203 hci_emit_btstack_event(event, sizeof(event), 1); 8204 } 8205 8206 static void hci_emit_nr_connections_changed(void){ 8207 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8208 uint8_t event[3]; 8209 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8210 event[1] = sizeof(event) - 2u; 8211 event[2] = nr_hci_connections(); 8212 hci_emit_btstack_event(event, sizeof(event), 1); 8213 } 8214 8215 static void hci_emit_hci_open_failed(void){ 8216 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8217 uint8_t event[2]; 8218 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8219 event[1] = sizeof(event) - 2u; 8220 hci_emit_btstack_event(event, sizeof(event), 1); 8221 } 8222 8223 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8224 log_info("hci_emit_dedicated_bonding_result %u ", status); 8225 uint8_t event[9]; 8226 int pos = 0; 8227 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8228 event[pos++] = sizeof(event) - 2u; 8229 event[pos++] = status; 8230 reverse_bd_addr(address, &event[pos]); 8231 hci_emit_btstack_event(event, sizeof(event), 1); 8232 } 8233 8234 8235 #ifdef ENABLE_CLASSIC 8236 8237 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8238 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8239 uint8_t event[5]; 8240 int pos = 0; 8241 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8242 event[pos++] = sizeof(event) - 2; 8243 little_endian_store_16(event, 2, con_handle); 8244 pos += 2; 8245 event[pos++] = level; 8246 hci_emit_btstack_event(event, sizeof(event), 1); 8247 } 8248 8249 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8250 if (!connection) return LEVEL_0; 8251 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8252 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8253 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8254 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8255 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8256 // LEVEL 4 always requires 128 bit encryption key size 8257 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8258 security_level = LEVEL_3; 8259 } 8260 return security_level; 8261 } 8262 8263 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8264 uint8_t event[4]; 8265 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8266 event[1] = sizeof(event) - 2; 8267 event[2] = discoverable; 8268 event[3] = connectable; 8269 hci_emit_btstack_event(event, sizeof(event), 1); 8270 } 8271 8272 // query if remote side supports eSCO 8273 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8274 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8275 if (!connection) return false; 8276 return (connection->remote_supported_features[0] & 1) != 0; 8277 } 8278 8279 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8280 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8281 if (!connection) return 0; 8282 return connection->remote_supported_sco_packets; 8283 } 8284 8285 static bool hci_ssp_supported(hci_connection_t * connection){ 8286 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8287 return (connection->bonding_flags & mask) == mask; 8288 } 8289 8290 // query if remote side supports SSP 8291 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8292 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8293 if (!connection) return false; 8294 return hci_ssp_supported(connection) ? 1 : 0; 8295 } 8296 8297 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8298 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8299 } 8300 8301 /** 8302 * Check if remote supported features query has completed 8303 */ 8304 bool hci_remote_features_available(hci_con_handle_t handle){ 8305 hci_connection_t * connection = hci_connection_for_handle(handle); 8306 if (!connection) return false; 8307 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8308 } 8309 8310 /** 8311 * Trigger remote supported features query 8312 */ 8313 8314 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8315 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8316 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8317 } 8318 } 8319 8320 void hci_remote_features_query(hci_con_handle_t con_handle){ 8321 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8322 if (!connection) return; 8323 hci_trigger_remote_features_for_connection(connection); 8324 hci_run(); 8325 } 8326 8327 // GAP API 8328 /** 8329 * @bbrief enable/disable bonding. default is enabled 8330 * @praram enabled 8331 */ 8332 void gap_set_bondable_mode(int enable){ 8333 hci_stack->bondable = enable ? 1 : 0; 8334 } 8335 /** 8336 * @brief Get bondable mode. 8337 * @return 1 if bondable 8338 */ 8339 int gap_get_bondable_mode(void){ 8340 return hci_stack->bondable; 8341 } 8342 8343 /** 8344 * @brief map link keys to security levels 8345 */ 8346 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8347 switch (link_key_type){ 8348 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8349 return LEVEL_4; 8350 case COMBINATION_KEY: 8351 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8352 return LEVEL_3; 8353 default: 8354 return LEVEL_2; 8355 } 8356 } 8357 8358 /** 8359 * @brief map link keys to secure connection yes/no 8360 */ 8361 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8362 switch (link_key_type){ 8363 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8364 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8365 return true; 8366 default: 8367 return false; 8368 } 8369 } 8370 8371 /** 8372 * @brief map link keys to authenticated 8373 */ 8374 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8375 switch (link_key_type){ 8376 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8377 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8378 return true; 8379 default: 8380 return false; 8381 } 8382 } 8383 8384 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8385 log_info("gap_mitm_protection_required_for_security_level %u", level); 8386 return level > LEVEL_2; 8387 } 8388 8389 /** 8390 * @brief get current security level 8391 */ 8392 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8393 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8394 if (!connection) return LEVEL_0; 8395 return gap_security_level_for_connection(connection); 8396 } 8397 8398 /** 8399 * @brief request connection to device to 8400 * @result GAP_AUTHENTICATION_RESULT 8401 */ 8402 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8403 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8404 if (!connection){ 8405 hci_emit_security_level(con_handle, LEVEL_0); 8406 return; 8407 } 8408 8409 btstack_assert(hci_is_le_connection(connection) == false); 8410 8411 // 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) 8412 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8413 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8414 requested_level = LEVEL_4; 8415 } 8416 8417 gap_security_level_t current_level = gap_security_level(con_handle); 8418 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8419 requested_level, connection->requested_security_level, current_level); 8420 8421 // authentication active if authentication request was sent or planned level > 0 8422 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8423 if (authentication_active){ 8424 // authentication already active 8425 if (connection->requested_security_level < requested_level){ 8426 // increase requested level as new level is higher 8427 // TODO: handle re-authentication when done 8428 connection->requested_security_level = requested_level; 8429 } 8430 } else { 8431 // no request active, notify if security sufficient 8432 if (requested_level <= current_level){ 8433 hci_emit_security_level(con_handle, current_level); 8434 return; 8435 } 8436 8437 // store request 8438 connection->requested_security_level = requested_level; 8439 8440 // start to authenticate connection 8441 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8442 8443 // request remote features if not already active, also trigger hci_run 8444 hci_remote_features_query(con_handle); 8445 } 8446 } 8447 8448 /** 8449 * @brief start dedicated bonding with device. disconnect after bonding 8450 * @param device 8451 * @param request MITM protection 8452 * @result GAP_DEDICATED_BONDING_COMPLETE 8453 */ 8454 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8455 8456 // create connection state machine 8457 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8458 8459 if (!connection){ 8460 return BTSTACK_MEMORY_ALLOC_FAILED; 8461 } 8462 8463 // delete link key 8464 gap_drop_link_key_for_bd_addr(device); 8465 8466 // configure LEVEL_2/3, dedicated bonding 8467 connection->state = SEND_CREATE_CONNECTION; 8468 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8469 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8470 connection->bonding_flags = BONDING_DEDICATED; 8471 8472 hci_run(); 8473 8474 return 0; 8475 } 8476 8477 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8478 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8479 if (connection == NULL){ 8480 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8481 } 8482 if (defer){ 8483 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8484 } else { 8485 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8486 // trigger disconnect 8487 hci_run(); 8488 } 8489 return ERROR_CODE_SUCCESS; 8490 } 8491 8492 void gap_set_local_name(const char * local_name){ 8493 hci_stack->local_name = local_name; 8494 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8495 // also update EIR if not set by user 8496 if (hci_stack->eir_data == NULL){ 8497 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8498 } 8499 hci_run(); 8500 } 8501 #endif 8502 8503 8504 #ifdef ENABLE_BLE 8505 8506 #ifdef ENABLE_LE_CENTRAL 8507 void gap_start_scan(void){ 8508 hci_stack->le_scanning_enabled = true; 8509 hci_run(); 8510 } 8511 8512 void gap_stop_scan(void){ 8513 hci_stack->le_scanning_enabled = false; 8514 hci_run(); 8515 } 8516 8517 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8518 hci_stack->le_scan_type = scan_type; 8519 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8520 hci_stack->le_scan_interval = scan_interval; 8521 hci_stack->le_scan_window = scan_window; 8522 hci_stack->le_scanning_param_update = true; 8523 hci_run(); 8524 } 8525 8526 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8527 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8528 } 8529 8530 void gap_set_scan_duplicate_filter(bool enabled){ 8531 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8532 } 8533 8534 void gap_set_scan_phys(uint8_t phys){ 8535 // LE Coded and LE 1M PHY 8536 hci_stack->le_scan_phys = phys & 0x05; 8537 } 8538 8539 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8540 // disallow le connection if outgoing already active 8541 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8542 log_error("le connect already active"); 8543 return ERROR_CODE_COMMAND_DISALLOWED; 8544 } 8545 8546 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8547 if (conn == NULL) { 8548 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8549 if (conn == NULL){ 8550 // alloc failed 8551 log_info("gap_connect: failed to alloc hci_connection_t"); 8552 return BTSTACK_MEMORY_ALLOC_FAILED; 8553 } 8554 } else { 8555 switch (conn->state) { 8556 case RECEIVED_DISCONNECTION_COMPLETE: 8557 // connection was just disconnected, reset state and allow re-connect 8558 conn->role = HCI_ROLE_MASTER; 8559 break; 8560 default: 8561 return ERROR_CODE_COMMAND_DISALLOWED; 8562 } 8563 } 8564 8565 // set le connecting state 8566 if (hci_is_le_connection_type(addr_type)){ 8567 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8568 } 8569 8570 // trigger connect 8571 log_info("gap_connect: send create connection next"); 8572 conn->state = SEND_CREATE_CONNECTION; 8573 hci_run(); 8574 return ERROR_CODE_SUCCESS; 8575 } 8576 8577 // @assumption: only a single outgoing LE Connection exists 8578 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8579 btstack_linked_item_t *it; 8580 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8581 hci_connection_t * conn = (hci_connection_t *) it; 8582 if (hci_is_le_connection(conn)){ 8583 switch (conn->state){ 8584 case SEND_CREATE_CONNECTION: 8585 case SENT_CREATE_CONNECTION: 8586 return conn; 8587 default: 8588 break; 8589 }; 8590 } 8591 } 8592 return NULL; 8593 } 8594 8595 uint8_t gap_connect_cancel(void){ 8596 hci_connection_t * conn; 8597 switch (hci_stack->le_connecting_request){ 8598 case LE_CONNECTING_IDLE: 8599 break; 8600 case LE_CONNECTING_WHITELIST: 8601 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8602 hci_run(); 8603 break; 8604 case LE_CONNECTING_DIRECT: 8605 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8606 conn = gap_get_outgoing_le_connection(); 8607 if (conn == NULL){ 8608 hci_run(); 8609 } else { 8610 switch (conn->state){ 8611 case SEND_CREATE_CONNECTION: 8612 // skip sending create connection and emit event instead 8613 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8614 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8615 btstack_memory_hci_connection_free( conn ); 8616 break; 8617 case SENT_CREATE_CONNECTION: 8618 // let hci_run_general_gap_le cancel outgoing connection 8619 hci_run(); 8620 break; 8621 default: 8622 break; 8623 } 8624 } 8625 break; 8626 default: 8627 btstack_unreachable(); 8628 break; 8629 } 8630 return ERROR_CODE_SUCCESS; 8631 } 8632 8633 /** 8634 * @brief Set connection parameters for outgoing connections 8635 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8636 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8637 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8638 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8639 * @param conn_latency, default: 4 8640 * @param supervision_timeout (unit: 10ms), default: 720 ms 8641 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8642 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8643 */ 8644 8645 void gap_set_connection_phys(uint8_t phys){ 8646 // LE Coded, LE 1M, LE 2M PHY 8647 hci_stack->le_connection_phys = phys & 7; 8648 } 8649 8650 #endif 8651 8652 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8653 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8654 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8655 hci_stack->le_connection_scan_interval = conn_scan_interval; 8656 hci_stack->le_connection_scan_window = conn_scan_window; 8657 hci_stack->le_connection_interval_min = conn_interval_min; 8658 hci_stack->le_connection_interval_max = conn_interval_max; 8659 hci_stack->le_connection_latency = conn_latency; 8660 hci_stack->le_supervision_timeout = supervision_timeout; 8661 hci_stack->le_minimum_ce_length = min_ce_length; 8662 hci_stack->le_maximum_ce_length = max_ce_length; 8663 } 8664 8665 /** 8666 * @brief Updates the connection parameters for a given LE connection 8667 * @param handle 8668 * @param conn_interval_min (unit: 1.25ms) 8669 * @param conn_interval_max (unit: 1.25ms) 8670 * @param conn_latency 8671 * @param supervision_timeout (unit: 10ms) 8672 * @return 0 if ok 8673 */ 8674 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8675 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8676 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8677 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8678 connection->le_conn_interval_min = conn_interval_min; 8679 connection->le_conn_interval_max = conn_interval_max; 8680 connection->le_conn_latency = conn_latency; 8681 connection->le_supervision_timeout = supervision_timeout; 8682 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8683 hci_run(); 8684 return 0; 8685 } 8686 8687 /** 8688 * @brief Request an update of the connection parameter for a given LE connection 8689 * @param handle 8690 * @param conn_interval_min (unit: 1.25ms) 8691 * @param conn_interval_max (unit: 1.25ms) 8692 * @param conn_latency 8693 * @param supervision_timeout (unit: 10ms) 8694 * @return 0 if ok 8695 */ 8696 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8697 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8698 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8699 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8700 connection->le_conn_interval_min = conn_interval_min; 8701 connection->le_conn_interval_max = conn_interval_max; 8702 connection->le_conn_latency = conn_latency; 8703 connection->le_supervision_timeout = supervision_timeout; 8704 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8705 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8706 hci_emit_btstack_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8707 return 0; 8708 } 8709 8710 #ifdef ENABLE_LE_PERIPHERAL 8711 8712 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8713 static void hci_assert_advertisement_set_0_ready(void){ 8714 // force advertising set creation for legacy LE Advertising 8715 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8716 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8717 } 8718 } 8719 #endif 8720 8721 /** 8722 * @brief Set Advertisement Data 8723 * @param advertising_data_length 8724 * @param advertising_data (max 31 octets) 8725 * @note data is not copied, pointer has to stay valid 8726 */ 8727 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8728 hci_stack->le_advertisements_data_len = advertising_data_length; 8729 hci_stack->le_advertisements_data = advertising_data; 8730 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8731 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8732 hci_assert_advertisement_set_0_ready(); 8733 #endif 8734 hci_run(); 8735 } 8736 8737 /** 8738 * @brief Set Scan Response Data 8739 * @param advertising_data_length 8740 * @param advertising_data (max 31 octets) 8741 * @note data is not copied, pointer has to stay valid 8742 */ 8743 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8744 hci_stack->le_scan_response_data_len = scan_response_data_length; 8745 hci_stack->le_scan_response_data = scan_response_data; 8746 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8747 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8748 hci_assert_advertisement_set_0_ready(); 8749 #endif 8750 hci_run(); 8751 } 8752 8753 /** 8754 * @brief Set Advertisement Parameters 8755 * @param adv_int_min 8756 * @param adv_int_max 8757 * @param adv_type 8758 * @param direct_address_type 8759 * @param direct_address 8760 * @param channel_map 8761 * @param filter_policy 8762 * 8763 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8764 */ 8765 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8766 uint8_t direct_address_typ, bd_addr_t direct_address, 8767 uint8_t channel_map, uint8_t filter_policy) { 8768 8769 hci_stack->le_advertisements_interval_min = adv_int_min; 8770 hci_stack->le_advertisements_interval_max = adv_int_max; 8771 hci_stack->le_advertisements_type = adv_type; 8772 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8773 hci_stack->le_advertisements_channel_map = channel_map; 8774 hci_stack->le_advertisements_filter_policy = filter_policy; 8775 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8776 6); 8777 8778 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8779 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8780 hci_run(); 8781 } 8782 8783 /** 8784 * @brief Enable/Disable Advertisements 8785 * @param enabled 8786 */ 8787 void gap_advertisements_enable(int enabled){ 8788 if (enabled == 0){ 8789 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8790 } else { 8791 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8792 } 8793 hci_update_advertisements_enabled_for_current_roles(); 8794 hci_run(); 8795 } 8796 8797 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8798 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8799 btstack_linked_list_iterator_t it; 8800 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8801 while (btstack_linked_list_iterator_has_next(&it)){ 8802 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8803 if ( item->advertising_handle == advertising_handle ) { 8804 return item; 8805 } 8806 } 8807 return NULL; 8808 } 8809 8810 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8811 hci_stack->le_resolvable_private_address_update_s = update_s; 8812 hci_run(); 8813 return ERROR_CODE_SUCCESS; 8814 } 8815 8816 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8817 // find free advertisement handle 8818 uint8_t advertisement_handle; 8819 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8820 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8821 } 8822 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8823 // clear 8824 memset(storage, 0, sizeof(le_advertising_set_t)); 8825 // copy params 8826 storage->advertising_handle = advertisement_handle; 8827 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8828 // add to list 8829 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8830 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8831 *out_advertising_handle = advertisement_handle; 8832 // set tasks and start 8833 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8834 hci_run(); 8835 return ERROR_CODE_SUCCESS; 8836 } 8837 8838 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8839 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8840 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8841 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8842 // set tasks and start 8843 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8844 hci_run(); 8845 return ERROR_CODE_SUCCESS; 8846 } 8847 8848 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8849 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8850 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8851 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8852 return ERROR_CODE_SUCCESS; 8853 } 8854 8855 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8856 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8857 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8858 memcpy(advertising_set->random_address, random_address, 6); 8859 // set tasks and start 8860 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8861 hci_run(); 8862 return ERROR_CODE_SUCCESS; 8863 } 8864 8865 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8866 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8867 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8868 advertising_set->adv_data = advertising_data; 8869 advertising_set->adv_data_len = advertising_data_length; 8870 // set tasks and start 8871 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8872 hci_run(); 8873 return ERROR_CODE_SUCCESS; 8874 } 8875 8876 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){ 8877 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8878 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8879 advertising_set->scan_data = scan_response_data; 8880 advertising_set->scan_data_len = scan_response_data_length; 8881 // set tasks and start 8882 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8883 hci_run(); 8884 return ERROR_CODE_SUCCESS; 8885 } 8886 8887 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8888 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8889 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8890 advertising_set->enable_timeout = timeout; 8891 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8892 // set tasks and start 8893 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8894 hci_run(); 8895 return ERROR_CODE_SUCCESS; 8896 } 8897 8898 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8899 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8900 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8901 // set tasks and start 8902 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8903 hci_run(); 8904 return ERROR_CODE_SUCCESS; 8905 } 8906 8907 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8908 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8909 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8910 // set tasks and start 8911 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8912 hci_run(); 8913 return ERROR_CODE_SUCCESS; 8914 } 8915 8916 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8917 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8918 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8919 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8920 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8921 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8922 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8923 // set tasks and start 8924 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8925 hci_run(); 8926 return ERROR_CODE_SUCCESS; 8927 } 8928 8929 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8930 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8931 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8932 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8933 return ERROR_CODE_SUCCESS; 8934 } 8935 8936 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8937 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8938 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8939 advertising_set->periodic_data = periodic_data; 8940 advertising_set->periodic_data_len = periodic_data_length; 8941 // set tasks and start 8942 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8943 hci_run(); 8944 return ERROR_CODE_SUCCESS; 8945 } 8946 8947 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8948 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8949 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8950 // set tasks and start 8951 advertising_set->periodic_include_adi = include_adi; 8952 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8953 hci_run(); 8954 return ERROR_CODE_SUCCESS; 8955 } 8956 8957 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8958 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8959 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8960 // set tasks and start 8961 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8962 hci_run(); 8963 return ERROR_CODE_SUCCESS; 8964 } 8965 8966 #ifdef ENABLE_LE_CENTRAL 8967 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8968 hci_stack->le_past_mode = mode; 8969 hci_stack->le_past_skip = skip; 8970 hci_stack->le_past_sync_timeout = sync_timeout; 8971 hci_stack->le_past_cte_type = cte_type; 8972 hci_stack->le_past_set_default_params = true; 8973 hci_run(); 8974 return ERROR_CODE_SUCCESS; 8975 } 8976 8977 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8978 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8979 if (hci_connection == NULL){ 8980 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8981 } 8982 hci_connection->le_past_sync_handle = sync_handle; 8983 hci_connection->le_past_service_data = service_data; 8984 hci_run(); 8985 return ERROR_CODE_SUCCESS; 8986 } 8987 #endif 8988 8989 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8990 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8991 if (hci_connection == NULL){ 8992 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8993 } 8994 hci_connection->le_past_advertising_handle = advertising_handle; 8995 hci_connection->le_past_service_data = service_data; 8996 hci_run(); 8997 return ERROR_CODE_SUCCESS; 8998 } 8999 9000 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 9001 9002 #endif 9003 9004 #endif 9005 9006 void hci_le_set_own_address_type(uint8_t own_address_type){ 9007 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 9008 if (own_address_type == hci_stack->le_own_addr_type) return; 9009 hci_stack->le_own_addr_type = own_address_type; 9010 9011 #ifdef ENABLE_LE_PERIPHERAL 9012 // update advertisement parameters, too 9013 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 9014 hci_run(); 9015 #endif 9016 #ifdef ENABLE_LE_CENTRAL 9017 // note: we don't update scan parameters or modify ongoing connection attempts 9018 #endif 9019 } 9020 9021 void hci_le_random_address_set(const bd_addr_t random_address){ 9022 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 9023 memcpy(hci_stack->le_random_address, random_address, 6); 9024 hci_stack->le_random_address_set = true; 9025 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 9026 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9027 if (hci_le_extended_advertising_supported()){ 9028 hci_assert_advertisement_set_0_ready(); 9029 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 9030 } 9031 #endif 9032 hci_run(); 9033 } 9034 9035 #endif 9036 9037 uint8_t gap_disconnect(hci_con_handle_t handle){ 9038 hci_connection_t * conn = hci_connection_for_handle(handle); 9039 if (!conn){ 9040 hci_emit_disconnection_complete(handle, 0); 9041 return 0; 9042 } 9043 uint8_t status = ERROR_CODE_SUCCESS; 9044 switch (conn->state){ 9045 case RECEIVED_DISCONNECTION_COMPLETE: 9046 // ignore if remote just disconnected 9047 break; 9048 case SEND_DISCONNECT: 9049 case SENT_DISCONNECT: 9050 // disconnect already requested or sent 9051 status = ERROR_CODE_COMMAND_DISALLOWED; 9052 break; 9053 default: 9054 // trigger hci_disconnect 9055 conn->state = SEND_DISCONNECT; 9056 hci_run(); 9057 break; 9058 } 9059 return status; 9060 } 9061 9062 int gap_read_rssi(hci_con_handle_t con_handle){ 9063 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9064 if (hci_connection == NULL) return 0; 9065 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 9066 hci_run(); 9067 return 1; 9068 } 9069 9070 /** 9071 * @brief Get connection type 9072 * @param con_handle 9073 * @result connection_type 9074 */ 9075 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 9076 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9077 if (!conn) return GAP_CONNECTION_INVALID; 9078 switch (conn->address_type){ 9079 case BD_ADDR_TYPE_LE_PUBLIC: 9080 case BD_ADDR_TYPE_LE_RANDOM: 9081 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9082 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9083 return GAP_CONNECTION_LE; 9084 case BD_ADDR_TYPE_SCO: 9085 return GAP_CONNECTION_SCO; 9086 case BD_ADDR_TYPE_ACL: 9087 return GAP_CONNECTION_ACL; 9088 default: 9089 return GAP_CONNECTION_INVALID; 9090 } 9091 } 9092 9093 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9094 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9095 if (!conn) return HCI_ROLE_INVALID; 9096 return (hci_role_t) conn->role; 9097 } 9098 9099 9100 #ifdef ENABLE_CLASSIC 9101 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9102 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9103 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9104 conn->request_role = role; 9105 hci_run(); 9106 return ERROR_CODE_SUCCESS; 9107 } 9108 #endif 9109 9110 #ifdef ENABLE_BLE 9111 9112 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){ 9113 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9114 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9115 9116 conn->le_phy_update_all_phys = all_phys; 9117 conn->le_phy_update_tx_phys = tx_phys; 9118 conn->le_phy_update_rx_phys = rx_phys; 9119 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9120 9121 hci_run(); 9122 9123 return 0; 9124 } 9125 9126 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9127 9128 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9129 // incorrect configuration: 9130 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9131 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9132 btstack_assert(false); 9133 #endif 9134 9135 // check if already in list 9136 btstack_linked_list_iterator_t it; 9137 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9138 while (btstack_linked_list_iterator_has_next(&it)) { 9139 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9140 if (entry->address_type != address_type) { 9141 continue; 9142 } 9143 if (memcmp(entry->address, address, 6) != 0) { 9144 continue; 9145 } 9146 9147 // if already on controller: 9148 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9149 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9150 // drop remove request 9151 entry->state = LE_WHITELIST_ON_CONTROLLER; 9152 return ERROR_CODE_SUCCESS; 9153 } else { 9154 // disallow as already on controller 9155 return ERROR_CODE_COMMAND_DISALLOWED; 9156 } 9157 } 9158 9159 // assume scheduled to add 9160 return ERROR_CODE_COMMAND_DISALLOWED; 9161 } 9162 9163 // alloc and add to list 9164 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9165 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9166 entry->address_type = address_type; 9167 (void)memcpy(entry->address, address, 6); 9168 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9169 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9170 return ERROR_CODE_SUCCESS; 9171 } 9172 9173 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9174 btstack_linked_list_iterator_t it; 9175 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9176 while (btstack_linked_list_iterator_has_next(&it)){ 9177 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9178 if (entry->address_type != address_type) { 9179 continue; 9180 } 9181 if (memcmp(entry->address, address, 6) != 0) { 9182 continue; 9183 } 9184 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9185 // remove from controller if already present 9186 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9187 } else { 9188 // directly remove entry from whitelist 9189 btstack_linked_list_iterator_remove(&it); 9190 btstack_memory_whitelist_entry_free(entry); 9191 } 9192 return ERROR_CODE_SUCCESS; 9193 } 9194 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9195 } 9196 9197 static void hci_whitelist_clear(void){ 9198 btstack_linked_list_iterator_t it; 9199 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9200 while (btstack_linked_list_iterator_has_next(&it)){ 9201 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9202 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9203 // remove from controller if already present 9204 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9205 continue; 9206 } 9207 // directly remove entry from whitelist 9208 btstack_linked_list_iterator_remove(&it); 9209 btstack_memory_whitelist_entry_free(entry); 9210 } 9211 } 9212 9213 /** 9214 * @brief Clear Whitelist 9215 * @return 0 if ok 9216 */ 9217 uint8_t gap_whitelist_clear(void){ 9218 hci_whitelist_clear(); 9219 hci_run(); 9220 return ERROR_CODE_SUCCESS; 9221 } 9222 9223 /** 9224 * @brief Add Device to Whitelist 9225 * @param address_typ 9226 * @param address 9227 * @return 0 if ok 9228 */ 9229 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9230 uint8_t status = hci_whitelist_add(address_type, address); 9231 if (status){ 9232 return status; 9233 } 9234 hci_run(); 9235 return ERROR_CODE_SUCCESS; 9236 } 9237 9238 /** 9239 * @brief Remove Device from Whitelist 9240 * @param address_typ 9241 * @param address 9242 * @return 0 if ok 9243 */ 9244 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9245 uint8_t status = hci_whitelist_remove(address_type, address); 9246 if (status){ 9247 return status; 9248 } 9249 hci_run(); 9250 return ERROR_CODE_SUCCESS; 9251 } 9252 9253 #ifdef ENABLE_LE_CENTRAL 9254 /** 9255 * @brief Connect with Whitelist 9256 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9257 * @return - if ok 9258 */ 9259 uint8_t gap_connect_with_whitelist(void){ 9260 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9261 return ERROR_CODE_COMMAND_DISALLOWED; 9262 } 9263 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9264 hci_run(); 9265 return ERROR_CODE_SUCCESS; 9266 } 9267 9268 /** 9269 * @brief Auto Connection Establishment - Start Connecting to device 9270 * @param address_typ 9271 * @param address 9272 * @return 0 if ok 9273 */ 9274 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9275 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9276 return ERROR_CODE_COMMAND_DISALLOWED; 9277 } 9278 9279 uint8_t status = hci_whitelist_add(address_type, address); 9280 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9281 return status; 9282 } 9283 9284 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9285 9286 hci_run(); 9287 return ERROR_CODE_SUCCESS; 9288 } 9289 9290 /** 9291 * @brief Auto Connection Establishment - Stop Connecting to device 9292 * @param address_typ 9293 * @param address 9294 * @return 0 if ok 9295 */ 9296 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9297 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9298 return ERROR_CODE_COMMAND_DISALLOWED; 9299 } 9300 9301 hci_whitelist_remove(address_type, address); 9302 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9303 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9304 } 9305 hci_run(); 9306 return 0; 9307 } 9308 9309 /** 9310 * @brief Auto Connection Establishment - Stop everything 9311 * @note Convenience function to stop all active auto connection attempts 9312 */ 9313 uint8_t gap_auto_connection_stop_all(void){ 9314 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9315 return ERROR_CODE_COMMAND_DISALLOWED; 9316 } 9317 hci_whitelist_clear(); 9318 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9319 hci_run(); 9320 return ERROR_CODE_SUCCESS; 9321 } 9322 9323 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9324 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9325 if (!conn) return 0; 9326 return conn->le_connection_interval; 9327 } 9328 #endif 9329 #endif 9330 9331 #ifdef ENABLE_CLASSIC 9332 /** 9333 * @brief Set Extended Inquiry Response data 9334 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9335 * @note has to be done before stack starts up 9336 */ 9337 void gap_set_extended_inquiry_response(const uint8_t * data){ 9338 hci_stack->eir_data = data; 9339 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9340 hci_run(); 9341 } 9342 9343 /** 9344 * @brief Start GAP Classic Inquiry 9345 * @param duration in 1.28s units 9346 * @return 0 if ok 9347 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9348 */ 9349 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9350 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9351 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9352 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9353 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9354 } 9355 hci_stack->inquiry_state = duration_in_1280ms_units; 9356 hci_stack->inquiry_max_period_length = 0; 9357 hci_stack->inquiry_min_period_length = 0; 9358 hci_run(); 9359 return 0; 9360 } 9361 9362 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9363 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9364 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9365 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9366 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9367 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9368 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9369 9370 hci_stack->inquiry_state = duration; 9371 hci_stack->inquiry_max_period_length = max_period_length; 9372 hci_stack->inquiry_min_period_length = min_period_length; 9373 hci_run(); 9374 return 0; 9375 } 9376 9377 /** 9378 * @brief Stop GAP Classic Inquiry 9379 * @return 0 if ok 9380 */ 9381 int gap_inquiry_stop(void){ 9382 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9383 // emit inquiry complete event, before it even started 9384 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9385 hci_emit_btstack_event(event, sizeof(event), 1); 9386 return 0; 9387 } 9388 switch (hci_stack->inquiry_state){ 9389 case GAP_INQUIRY_STATE_ACTIVE: 9390 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9391 hci_run(); 9392 return ERROR_CODE_SUCCESS; 9393 case GAP_INQUIRY_STATE_PERIODIC: 9394 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9395 hci_run(); 9396 return ERROR_CODE_SUCCESS; 9397 default: 9398 return ERROR_CODE_COMMAND_DISALLOWED; 9399 } 9400 } 9401 9402 void gap_inquiry_set_lap(uint32_t lap){ 9403 hci_stack->inquiry_lap = lap; 9404 } 9405 9406 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9407 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9408 hci_stack->inquiry_scan_window = inquiry_scan_window; 9409 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9410 hci_run(); 9411 } 9412 9413 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9414 { 9415 hci_stack->inquiry_tx_power_level = tx_power; 9416 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9417 hci_run(); 9418 } 9419 9420 9421 /** 9422 * @brief Remote Name Request 9423 * @param addr 9424 * @param page_scan_repetition_mode 9425 * @param clock_offset only used when bit 15 is set 9426 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9427 */ 9428 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9429 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9430 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9431 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9432 hci_stack->remote_name_clock_offset = clock_offset; 9433 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9434 hci_run(); 9435 return 0; 9436 } 9437 9438 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9439 hci_stack->gap_pairing_state = state; 9440 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9441 hci_run(); 9442 return 0; 9443 } 9444 9445 /** 9446 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9447 * @param addr 9448 * @param pin_data 9449 * @param pin_len 9450 * @return 0 if ok 9451 */ 9452 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9453 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9454 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9455 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9456 hci_stack->gap_pairing_pin_len = pin_len; 9457 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9458 } 9459 9460 /** 9461 * @brief Legacy Pairing Pin Code Response 9462 * @param addr 9463 * @param pin 9464 * @return 0 if ok 9465 */ 9466 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9467 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9468 } 9469 9470 /** 9471 * @brief Abort Legacy Pairing 9472 * @param addr 9473 * @param pin 9474 * @return 0 if ok 9475 */ 9476 int gap_pin_code_negative(bd_addr_t addr){ 9477 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9478 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9479 } 9480 9481 /** 9482 * @brief SSP Passkey Response 9483 * @param addr 9484 * @param passkey 9485 * @return 0 if ok 9486 */ 9487 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9488 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9489 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9490 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9491 } 9492 9493 /** 9494 * @brief Abort SSP Passkey Entry/Pairing 9495 * @param addr 9496 * @param pin 9497 * @return 0 if ok 9498 */ 9499 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9500 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9501 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9502 } 9503 9504 /** 9505 * @brief Accept SSP Numeric Comparison 9506 * @param addr 9507 * @param passkey 9508 * @return 0 if ok 9509 */ 9510 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9511 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9512 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9513 } 9514 9515 /** 9516 * @brief Abort SSP Numeric Comparison/Pairing 9517 * @param addr 9518 * @param pin 9519 * @return 0 if ok 9520 */ 9521 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9522 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9523 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9524 } 9525 9526 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9527 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9528 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9529 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9530 connectionSetAuthenticationFlags(conn, flag); 9531 hci_run(); 9532 return ERROR_CODE_SUCCESS; 9533 } 9534 #endif 9535 9536 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9537 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9538 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9539 } 9540 9541 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9542 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9543 } 9544 #endif 9545 9546 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9547 /** 9548 * @brief Report Remote OOB Data 9549 * @param bd_addr 9550 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9551 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9552 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9553 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9554 */ 9555 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){ 9556 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9557 if (connection == NULL) { 9558 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9559 } 9560 connection->classic_oob_c_192 = c_192; 9561 connection->classic_oob_r_192 = r_192; 9562 9563 // ignore P-256 if not supported by us 9564 if (hci_stack->secure_connections_active){ 9565 connection->classic_oob_c_256 = c_256; 9566 connection->classic_oob_r_256 = r_256; 9567 } 9568 9569 return ERROR_CODE_SUCCESS; 9570 } 9571 /** 9572 * @brief Generate new OOB data 9573 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9574 */ 9575 void gap_ssp_generate_oob_data(void){ 9576 hci_stack->classic_read_local_oob_data = true; 9577 hci_run(); 9578 } 9579 9580 #endif 9581 9582 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9583 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9584 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9585 if (connection == NULL) { 9586 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9587 } 9588 9589 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9590 connection->link_key_type = type; 9591 9592 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9593 } 9594 9595 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9596 /** 9597 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9598 * @param inquiry_mode see bluetooth_defines.h 9599 */ 9600 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9601 hci_stack->inquiry_mode = inquiry_mode; 9602 } 9603 9604 /** 9605 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9606 */ 9607 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9608 hci_stack->sco_voice_setting = voice_setting; 9609 } 9610 9611 /** 9612 * @brief Get SCO Voice Setting 9613 * @return current voice setting 9614 */ 9615 uint16_t hci_get_sco_voice_setting(void){ 9616 return hci_stack->sco_voice_setting; 9617 } 9618 9619 static int hci_have_usb_transport(void){ 9620 if (!hci_stack->hci_transport) return 0; 9621 const char * transport_name = hci_stack->hci_transport->name; 9622 if (!transport_name) return 0; 9623 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9624 } 9625 9626 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9627 uint16_t sco_packet_length = 0; 9628 9629 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9630 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as many bytes 9631 int multiplier; 9632 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9633 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9634 multiplier = 2; 9635 } else { 9636 multiplier = 1; 9637 } 9638 #endif 9639 9640 #ifdef ENABLE_SCO_OVER_HCI 9641 if (hci_have_usb_transport()){ 9642 // see Core Spec for H2 USB Transfer. 9643 // 3 byte SCO header + 24 bytes per connection 9644 // @note multiple sco connections not supported currently 9645 sco_packet_length = 3 + 24 * multiplier; 9646 } else { 9647 // 3 byte SCO header + SCO packet length over the air 9648 sco_packet_length = 3 + payload_size * multiplier; 9649 // assert that it still fits inside an SCO buffer 9650 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9651 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9652 } 9653 } 9654 #endif 9655 #ifdef HAVE_SCO_TRANSPORT 9656 // 3 byte SCO header + SCO packet length over the air 9657 sco_packet_length = 3 + payload_size * multiplier; 9658 // assert that it still fits inside an SCO buffer 9659 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9660 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9661 } 9662 #endif 9663 return sco_packet_length; 9664 } 9665 9666 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9667 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9668 if (connection != NULL){ 9669 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9670 } 9671 return 0; 9672 } 9673 9674 uint16_t hci_get_sco_packet_length(void){ 9675 btstack_linked_list_iterator_t it; 9676 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9677 while (btstack_linked_list_iterator_has_next(&it)){ 9678 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9679 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9680 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9681 } 9682 } 9683 return 0; 9684 } 9685 9686 /** 9687 * @brief Sets the master/slave policy 9688 * @param policy (0: attempt to become master, 1: let connecting device decide) 9689 */ 9690 void hci_set_master_slave_policy(uint8_t policy){ 9691 hci_stack->master_slave_policy = policy; 9692 } 9693 9694 #endif 9695 9696 HCI_STATE hci_get_state(void){ 9697 return hci_stack->state; 9698 } 9699 9700 #ifdef ENABLE_CLASSIC 9701 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9702 hci_stack->gap_classic_accept_callback = accept_callback; 9703 } 9704 #endif 9705 9706 /** 9707 * @brief Set callback for Bluetooth Hardware Error 9708 */ 9709 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9710 hci_stack->hardware_error_callback = fn; 9711 } 9712 9713 void hci_disconnect_all(void){ 9714 btstack_linked_list_iterator_t it; 9715 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9716 while (btstack_linked_list_iterator_has_next(&it)){ 9717 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9718 if (con->state == SENT_DISCONNECT) continue; 9719 con->state = SEND_DISCONNECT; 9720 } 9721 hci_run(); 9722 } 9723 9724 uint16_t hci_get_manufacturer(void){ 9725 return hci_stack->manufacturer; 9726 } 9727 9728 #ifdef ENABLE_BLE 9729 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9730 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9731 if (!hci_con) return NULL; 9732 return &hci_con->sm_connection; 9733 } 9734 9735 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9736 // without sm.c default values from create_connection_for_bd_addr_and_type() result in non-encrypted, not-authenticated 9737 #endif 9738 9739 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9740 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9741 if (hci_connection == NULL) return 0; 9742 if (hci_is_le_connection(hci_connection)){ 9743 #ifdef ENABLE_BLE 9744 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9745 if (sm_conn->sm_connection_encrypted != 0u) { 9746 return sm_conn->sm_actual_encryption_key_size; 9747 } 9748 #endif 9749 } else { 9750 #ifdef ENABLE_CLASSIC 9751 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9752 return hci_connection->encryption_key_size; 9753 } 9754 #endif 9755 } 9756 return 0; 9757 } 9758 9759 bool gap_authenticated(hci_con_handle_t con_handle){ 9760 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9761 if (hci_connection == NULL) return false; 9762 9763 switch (hci_connection->address_type){ 9764 #ifdef ENABLE_BLE 9765 case BD_ADDR_TYPE_LE_PUBLIC: 9766 case BD_ADDR_TYPE_LE_RANDOM: 9767 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9768 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9769 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9770 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9771 #endif 9772 #ifdef ENABLE_CLASSIC 9773 case BD_ADDR_TYPE_SCO: 9774 case BD_ADDR_TYPE_ACL: 9775 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9776 #endif 9777 default: 9778 return false; 9779 } 9780 } 9781 9782 bool gap_secure_connection(hci_con_handle_t con_handle){ 9783 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9784 if (hci_connection == NULL) return 0; 9785 9786 switch (hci_connection->address_type){ 9787 #ifdef ENABLE_BLE 9788 case BD_ADDR_TYPE_LE_PUBLIC: 9789 case BD_ADDR_TYPE_LE_RANDOM: 9790 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9791 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9792 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9793 return hci_connection->sm_connection.sm_connection_sc; 9794 #endif 9795 #ifdef ENABLE_CLASSIC 9796 case BD_ADDR_TYPE_SCO: 9797 case BD_ADDR_TYPE_ACL: 9798 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9799 #endif 9800 default: 9801 return false; 9802 } 9803 } 9804 9805 bool gap_bonded(hci_con_handle_t con_handle){ 9806 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9807 if (hci_connection == NULL) return 0; 9808 9809 #ifdef ENABLE_CLASSIC 9810 link_key_t link_key; 9811 link_key_type_t link_key_type; 9812 #endif 9813 switch (hci_connection->address_type){ 9814 #ifdef ENABLE_BLE 9815 case BD_ADDR_TYPE_LE_PUBLIC: 9816 case BD_ADDR_TYPE_LE_RANDOM: 9817 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9818 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9819 return hci_connection->sm_connection.sm_le_db_index >= 0; 9820 #endif 9821 #ifdef ENABLE_CLASSIC 9822 case BD_ADDR_TYPE_SCO: 9823 case BD_ADDR_TYPE_ACL: 9824 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9825 #endif 9826 default: 9827 return false; 9828 } 9829 } 9830 9831 #ifdef ENABLE_BLE 9832 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9833 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9834 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9835 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9836 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticated connection cannot be authorized 9837 return sm_conn->sm_connection_authorization_state; 9838 } 9839 #endif 9840 9841 #ifdef ENABLE_CLASSIC 9842 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){ 9843 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9844 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9845 conn->sniff_min_interval = sniff_min_interval; 9846 conn->sniff_max_interval = sniff_max_interval; 9847 conn->sniff_attempt = sniff_attempt; 9848 conn->sniff_timeout = sniff_timeout; 9849 hci_run(); 9850 return 0; 9851 } 9852 9853 /** 9854 * @brief Exit Sniff mode 9855 * @param con_handle 9856 @ @return 0 if ok 9857 */ 9858 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9859 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9860 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9861 conn->sniff_min_interval = 0xffff; 9862 hci_run(); 9863 return 0; 9864 } 9865 9866 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){ 9867 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9868 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9869 conn->sniff_subrating_max_latency = max_latency; 9870 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9871 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9872 hci_run(); 9873 return ERROR_CODE_SUCCESS; 9874 } 9875 9876 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){ 9877 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9878 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9879 conn->qos_service_type = service_type; 9880 conn->qos_token_rate = token_rate; 9881 conn->qos_peak_bandwidth = peak_bandwidth; 9882 conn->qos_latency = latency; 9883 conn->qos_delay_variation = delay_variation; 9884 hci_run(); 9885 return ERROR_CODE_SUCCESS; 9886 } 9887 9888 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9889 hci_stack->new_page_scan_interval = page_scan_interval; 9890 hci_stack->new_page_scan_window = page_scan_window; 9891 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9892 hci_run(); 9893 } 9894 9895 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9896 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9897 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9898 hci_run(); 9899 } 9900 9901 void gap_set_page_timeout(uint16_t page_timeout){ 9902 hci_stack->page_timeout = page_timeout; 9903 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9904 hci_run(); 9905 } 9906 9907 #endif 9908 9909 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9910 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9911 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9912 if (le_device_db_index >= le_device_db_max_count()) return; 9913 uint8_t offset = le_device_db_index >> 3; 9914 uint8_t mask = 1 << (le_device_db_index & 7); 9915 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9916 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9917 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9918 // note: go back to remove entries, otherwise, a remove + add will skip the add 9919 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9920 } 9921 } 9922 9923 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9924 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9925 if (le_device_db_index >= le_device_db_max_count()) return; 9926 uint8_t offset = le_device_db_index >> 3; 9927 uint8_t mask = 1 << (le_device_db_index & 7); 9928 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9929 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9930 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9931 } 9932 } 9933 9934 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9935 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9936 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9937 } 9938 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9939 // restart le resolving list update 9940 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9941 } 9942 return ERROR_CODE_SUCCESS; 9943 } 9944 9945 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9946 hci_stack->le_privacy_mode = privacy_mode; 9947 } 9948 #endif 9949 9950 #ifdef ENABLE_BLE 9951 #ifdef ENABLE_LE_CENTRAL 9952 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9953 9954 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9955 9956 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9957 // incorrect configuration: 9958 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9959 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9960 btstack_assert(false); 9961 #endif 9962 9963 // check if already in list 9964 btstack_linked_list_iterator_t it; 9965 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9966 while (btstack_linked_list_iterator_has_next(&it)) { 9967 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9968 if (entry->sid != advertising_sid) { 9969 continue; 9970 } 9971 if (entry->address_type != address_type) { 9972 continue; 9973 } 9974 if (memcmp(entry->address, address, 6) != 0) { 9975 continue; 9976 } 9977 // disallow if already scheduled to add 9978 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9979 return ERROR_CODE_COMMAND_DISALLOWED; 9980 } 9981 // still on controller, but scheduled to remove -> re-add 9982 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9983 return ERROR_CODE_SUCCESS; 9984 } 9985 // alloc and add to list 9986 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9987 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9988 entry->sid = advertising_sid; 9989 entry->address_type = address_type; 9990 (void)memcpy(entry->address, address, 6); 9991 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9992 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9993 return ERROR_CODE_SUCCESS; 9994 } 9995 9996 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9997 btstack_linked_list_iterator_t it; 9998 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9999 while (btstack_linked_list_iterator_has_next(&it)){ 10000 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10001 if (entry->sid != advertising_sid) { 10002 continue; 10003 } 10004 if (entry->address_type != address_type) { 10005 continue; 10006 } 10007 if (memcmp(entry->address, address, 6) != 0) { 10008 continue; 10009 } 10010 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10011 // remove from controller if already present 10012 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10013 } else { 10014 // directly remove entry from whitelist 10015 btstack_linked_list_iterator_remove(&it); 10016 btstack_memory_periodic_advertiser_list_entry_free(entry); 10017 } 10018 return ERROR_CODE_SUCCESS; 10019 } 10020 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10021 } 10022 10023 static void hci_periodic_advertiser_list_clear(void){ 10024 btstack_linked_list_iterator_t it; 10025 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10026 while (btstack_linked_list_iterator_has_next(&it)){ 10027 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10028 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10029 // remove from controller if already present 10030 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10031 continue; 10032 } 10033 // directly remove entry from whitelist 10034 btstack_linked_list_iterator_remove(&it); 10035 btstack_memory_periodic_advertiser_list_entry_free(entry); 10036 } 10037 } 10038 10039 uint8_t gap_periodic_advertiser_list_clear(void){ 10040 hci_periodic_advertiser_list_clear(); 10041 hci_run(); 10042 return ERROR_CODE_SUCCESS; 10043 } 10044 10045 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10046 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 10047 if (status){ 10048 return status; 10049 } 10050 hci_run(); 10051 return ERROR_CODE_SUCCESS; 10052 } 10053 10054 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10055 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 10056 if (status){ 10057 return status; 10058 } 10059 hci_run(); 10060 return ERROR_CODE_SUCCESS; 10061 } 10062 10063 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 10064 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 10065 // abort if already active 10066 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 10067 return ERROR_CODE_COMMAND_DISALLOWED; 10068 } 10069 // store request 10070 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 10071 hci_stack->le_periodic_sync_options = options; 10072 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 10073 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 10074 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 10075 hci_stack->le_periodic_sync_skip = skip; 10076 hci_stack->le_periodic_sync_timeout = sync_timeout; 10077 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 10078 10079 hci_run(); 10080 return ERROR_CODE_SUCCESS; 10081 } 10082 10083 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 10084 // abort if not requested 10085 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 10086 return ERROR_CODE_COMMAND_DISALLOWED; 10087 } 10088 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 10089 hci_run(); 10090 return ERROR_CODE_SUCCESS; 10091 } 10092 10093 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10094 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10095 return ERROR_CODE_COMMAND_DISALLOWED; 10096 } 10097 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10098 hci_run(); 10099 return ERROR_CODE_SUCCESS; 10100 } 10101 10102 #endif 10103 #endif 10104 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10105 static hci_iso_stream_t * 10106 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10107 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10108 if (iso_stream != NULL){ 10109 iso_stream->iso_type = iso_type; 10110 iso_stream->state = state; 10111 iso_stream->group_id = group_id; 10112 iso_stream->stream_id = stream_id; 10113 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10114 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10115 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10116 } 10117 return iso_stream; 10118 } 10119 10120 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10121 btstack_linked_list_iterator_t it; 10122 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10123 while (btstack_linked_list_iterator_has_next(&it)){ 10124 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10125 if (iso_stream->cis_handle == con_handle ) { 10126 return iso_stream; 10127 } 10128 } 10129 return NULL; 10130 } 10131 10132 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10133 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10134 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10135 btstack_memory_hci_iso_stream_free(iso_stream); 10136 } 10137 10138 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10139 btstack_linked_list_iterator_t it; 10140 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10141 while (btstack_linked_list_iterator_has_next(&it)){ 10142 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10143 if ((iso_stream->group_id == group_id) && 10144 (iso_stream->iso_type == iso_type)){ 10145 btstack_linked_list_iterator_remove(&it); 10146 btstack_memory_hci_iso_stream_free(iso_stream); 10147 } 10148 } 10149 } 10150 10151 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10152 btstack_linked_list_iterator_t it; 10153 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10154 while (btstack_linked_list_iterator_has_next(&it)){ 10155 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10156 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10157 (iso_stream->group_id == group_id)){ 10158 btstack_linked_list_iterator_remove(&it); 10159 btstack_memory_hci_iso_stream_free(iso_stream); 10160 } 10161 } 10162 } 10163 10164 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10165 UNUSED(big_handle); 10166 10167 btstack_linked_list_iterator_t it; 10168 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10169 while (btstack_linked_list_iterator_has_next(&it)){ 10170 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10171 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10172 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10173 } 10174 } 10175 } 10176 10177 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10178 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10179 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10180 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10181 return (sdu_len_offset + 2 + sdu_len) == size; 10182 } 10183 10184 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10185 if (iso_stream == NULL){ 10186 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10187 return; 10188 } 10189 10190 if (hci_stack->iso_packet_handler == NULL) { 10191 return; 10192 } 10193 10194 // parse header 10195 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10196 uint16_t data_total_length = little_endian_read_16(packet, 2); 10197 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10198 10199 // assert packet is complete 10200 if ((data_total_length + 4u) != size){ 10201 return; 10202 } 10203 10204 if ((pb_flag & 0x01) == 0){ 10205 if (pb_flag == 0x02){ 10206 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10207 if (hci_iso_sdu_complete(packet, size)) { 10208 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10209 } 10210 } else { 10211 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10212 if (size > sizeof(iso_stream->reassembly_buffer)){ 10213 return; 10214 } 10215 memcpy(iso_stream->reassembly_buffer, packet, size); 10216 // fix pb_flag 10217 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10218 iso_stream->reassembly_pos = size; 10219 } 10220 } else { 10221 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10222 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10223 if (ts_flag != 0){ 10224 return; 10225 } 10226 // append fragment 10227 if (iso_stream->reassembly_pos == 0){ 10228 return; 10229 } 10230 10231 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10232 // reset reassembly buffer 10233 iso_stream->reassembly_pos = 0; 10234 return; 10235 } 10236 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10237 iso_stream->reassembly_pos += data_total_length; 10238 10239 // deliver if last fragment and SDU complete 10240 if (pb_flag == 0x03){ 10241 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10242 // fix data_total_length 10243 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10244 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10245 } 10246 // reset reassembly buffer 10247 iso_stream->reassembly_pos = 0; 10248 } 10249 } 10250 } 10251 10252 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10253 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10254 uint16_t pos = 0; 10255 event[pos++] = HCI_EVENT_META_GAP; 10256 event[pos++] = 4 + (2 * big->num_bis); 10257 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10258 event[pos++] = status; 10259 event[pos++] = big->big_handle; 10260 event[pos++] = big->num_bis; 10261 uint8_t i; 10262 for (i=0;i<big->num_bis;i++){ 10263 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10264 pos += 2; 10265 } 10266 hci_emit_btstack_event(event, pos, 0); 10267 } 10268 10269 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10270 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10271 uint16_t pos = 0; 10272 event[pos++] = HCI_EVENT_META_GAP; 10273 event[pos++] = 4 + (2 * cig->num_cis); 10274 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10275 event[pos++] = status; 10276 event[pos++] = cig->cig_id; 10277 event[pos++] = cig->num_cis; 10278 uint8_t i; 10279 for (i=0;i<cig->num_cis;i++){ 10280 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10281 pos += 2; 10282 } 10283 hci_emit_btstack_event(event, pos, 0); 10284 } 10285 10286 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10287 uint16_t pos = 0; 10288 event[pos++] = HCI_EVENT_META_GAP; 10289 event[pos++] = 8; 10290 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10291 event[pos++] = status; 10292 event[pos++] = iso_stream->group_id; 10293 event[pos++] = iso_stream->stream_id; 10294 little_endian_store_16(event, pos, iso_stream->cis_handle); 10295 pos += 2; 10296 little_endian_store_16(event, pos, iso_stream->acl_handle); 10297 pos += 2; 10298 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10299 pos += 2; 10300 event[pos++] = iso_stream->number_of_subevents; 10301 event[pos++] = iso_stream->burst_number_c_to_p; 10302 event[pos++] = iso_stream->burst_number_p_to_c; 10303 event[pos++] = iso_stream->flush_timeout_c_to_p; 10304 event[pos++] = iso_stream->flush_timeout_p_to_c; 10305 return pos; 10306 } 10307 10308 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10309 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10310 // cache data before finalizing struct 10311 uint8_t event [17]; 10312 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10313 btstack_assert(pos <= sizeof(event)); 10314 if (status != ERROR_CODE_SUCCESS){ 10315 hci_iso_stream_finalize(iso_stream); 10316 } 10317 hci_emit_btstack_event(event, pos, 0); 10318 } 10319 10320 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10321 uint8_t event [4]; 10322 uint16_t pos = 0; 10323 event[pos++] = HCI_EVENT_META_GAP; 10324 event[pos++] = 2; 10325 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10326 event[pos++] = big->big_handle; 10327 hci_emit_btstack_event(event, pos, 0); 10328 } 10329 10330 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10331 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10332 uint16_t pos = 0; 10333 event[pos++] = HCI_EVENT_META_GAP; 10334 event[pos++] = 4; 10335 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10336 event[pos++] = status; 10337 event[pos++] = big_sync->big_handle; 10338 event[pos++] = big_sync->num_bis; 10339 uint8_t i; 10340 for (i=0;i<big_sync->num_bis;i++){ 10341 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10342 pos += 2; 10343 } 10344 hci_emit_btstack_event(event, pos, 0); 10345 } 10346 10347 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10348 uint8_t event [4]; 10349 uint16_t pos = 0; 10350 event[pos++] = HCI_EVENT_META_GAP; 10351 event[pos++] = 2; 10352 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10353 event[pos++] = big_handle; 10354 hci_emit_btstack_event(event, pos, 0); 10355 } 10356 10357 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10358 uint8_t event[6]; 10359 uint16_t pos = 0; 10360 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10361 event[pos++] = sizeof(event) - 2; 10362 event[pos++] = big->big_handle; 10363 event[pos++] = bis_index; 10364 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10365 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10366 } 10367 10368 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10369 uint8_t event[4]; 10370 uint16_t pos = 0; 10371 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10372 event[pos++] = sizeof(event) - 2; 10373 little_endian_store_16(event, pos, cis_con_handle); 10374 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10375 } 10376 10377 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10378 btstack_linked_list_iterator_t it; 10379 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10380 while (btstack_linked_list_iterator_has_next(&it)){ 10381 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10382 if ( big->big_handle == big_handle ) { 10383 return big; 10384 } 10385 } 10386 return NULL; 10387 } 10388 10389 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10390 btstack_linked_list_iterator_t it; 10391 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10392 while (btstack_linked_list_iterator_has_next(&it)){ 10393 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10394 if ( big_sync->big_handle == big_handle ) { 10395 return big_sync; 10396 } 10397 } 10398 return NULL; 10399 } 10400 10401 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10402 hci_stack->iso_packets_to_queue = num_packets; 10403 } 10404 10405 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10406 btstack_linked_list_iterator_t it; 10407 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10408 while (btstack_linked_list_iterator_has_next(&it)){ 10409 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10410 if ( cig->cig_id == cig_id ) { 10411 return cig; 10412 } 10413 } 10414 return NULL; 10415 } 10416 10417 static void hci_iso_notify_can_send_now(void){ 10418 10419 // BIG 10420 10421 btstack_linked_list_iterator_t it; 10422 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10423 while (btstack_linked_list_iterator_has_next(&it)){ 10424 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10425 // track number completed packet timestamps 10426 if (big->num_completed_timestamp_current_valid){ 10427 big->num_completed_timestamp_current_valid = false; 10428 if (big->num_completed_timestamp_previous_valid){ 10429 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10430 int32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10431 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10432 big->num_completed_timestamp_previous_ms); 10433 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10434 // to catch up, skip packet on all BIS 10435 uint8_t i; 10436 for (i=0;i<big->num_bis;i++){ 10437 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10438 if (iso_stream){ 10439 iso_stream->num_packets_to_skip++; 10440 } 10441 } 10442 } 10443 } 10444 big->num_completed_timestamp_previous_valid = true; 10445 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10446 } 10447 10448 if (big->can_send_now_requested){ 10449 // check if no outgoing iso packets pending and no can send now have to be emitted 10450 uint8_t i; 10451 bool can_send = true; 10452 uint8_t num_iso_queued_minimum = 0; 10453 for (i=0;i<big->num_bis;i++){ 10454 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10455 if (iso_stream == NULL) continue; 10456 // handle case where individual ISO packet was sent too late: 10457 // for each additionally queued packet, a new one needs to get skipped 10458 if (i==0){ 10459 num_iso_queued_minimum = iso_stream->num_packets_sent; 10460 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10461 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10462 iso_stream->num_packets_to_skip += num_packets_to_skip; 10463 iso_stream->num_packets_sent -= num_packets_to_skip; 10464 } 10465 // check if we can send now 10466 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10467 can_send = false; 10468 break; 10469 } 10470 } 10471 if (can_send){ 10472 // propagate can send now to individual streams 10473 big->can_send_now_requested = false; 10474 for (i=0;i<big->num_bis;i++){ 10475 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10476 iso_stream->emit_ready_to_send = true; 10477 } 10478 } 10479 } 10480 } 10481 10482 if (hci_stack->hci_packet_buffer_reserved) return; 10483 10484 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10485 while (btstack_linked_list_iterator_has_next(&it)){ 10486 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10487 // report bis ready 10488 uint8_t i; 10489 for (i=0;i<big->num_bis;i++){ 10490 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10491 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10492 iso_stream->emit_ready_to_send = false; 10493 hci_emit_bis_can_send_now(big, i); 10494 if (hci_stack->hci_packet_buffer_reserved) return; 10495 } 10496 } 10497 } 10498 10499 10500 // CIS 10501 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10502 while (btstack_linked_list_iterator_has_next(&it)) { 10503 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10504 if ((iso_stream->can_send_now_requested) && 10505 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10506 iso_stream->can_send_now_requested = false; 10507 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10508 if (hci_stack->hci_packet_buffer_reserved) return; 10509 } 10510 } 10511 } 10512 10513 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10514 // make big handle unique and usuable for big and big sync 10515 if (hci_big_for_handle(big_handle) != NULL){ 10516 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10517 } 10518 if (hci_big_sync_for_handle(big_handle) != NULL){ 10519 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10520 } 10521 if (num_bis == 0){ 10522 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10523 } 10524 if (num_bis > MAX_NR_BIS){ 10525 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10526 } 10527 10528 // reserve ISO Streams 10529 uint8_t i; 10530 uint8_t status = ERROR_CODE_SUCCESS; 10531 for (i=0;i<num_bis;i++){ 10532 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10533 if (iso_stream == NULL) { 10534 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10535 break; 10536 } 10537 } 10538 10539 // free structs on error 10540 if (status != ERROR_CODE_SUCCESS){ 10541 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10542 } 10543 10544 return status; 10545 } 10546 10547 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10548 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10549 if (status != ERROR_CODE_SUCCESS){ 10550 return status; 10551 } 10552 10553 le_audio_big_t * big = storage; 10554 big->big_handle = big_params->big_handle; 10555 big->params = big_params; 10556 big->state = LE_AUDIO_BIG_STATE_CREATE; 10557 big->num_bis = big_params->num_bis; 10558 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10559 10560 hci_run(); 10561 10562 return ERROR_CODE_SUCCESS; 10563 } 10564 10565 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10566 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10567 if (status != ERROR_CODE_SUCCESS){ 10568 return status; 10569 } 10570 10571 le_audio_big_sync_t * big_sync = storage; 10572 big_sync->big_handle = big_sync_params->big_handle; 10573 big_sync->params = big_sync_params; 10574 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10575 big_sync->num_bis = big_sync_params->num_bis; 10576 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10577 10578 hci_run(); 10579 10580 return ERROR_CODE_SUCCESS; 10581 } 10582 10583 uint8_t gap_big_terminate(uint8_t big_handle){ 10584 le_audio_big_t * big = hci_big_for_handle(big_handle); 10585 if (big == NULL){ 10586 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10587 } 10588 switch (big->state){ 10589 case LE_AUDIO_BIG_STATE_CREATE: 10590 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10591 hci_emit_big_terminated(big); 10592 break; 10593 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10594 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10595 break; 10596 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10597 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10598 case LE_AUDIO_BIG_STATE_ACTIVE: 10599 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10600 hci_run(); 10601 break; 10602 default: 10603 return ERROR_CODE_COMMAND_DISALLOWED; 10604 } 10605 return ERROR_CODE_SUCCESS; 10606 } 10607 10608 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10609 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10610 if (big_sync == NULL){ 10611 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10612 } 10613 switch (big_sync->state){ 10614 case LE_AUDIO_BIG_STATE_CREATE: 10615 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10616 hci_emit_big_sync_stopped(big_handle); 10617 break; 10618 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10619 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10620 break; 10621 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10622 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10623 case LE_AUDIO_BIG_STATE_ACTIVE: 10624 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10625 hci_run(); 10626 break; 10627 default: 10628 return ERROR_CODE_COMMAND_DISALLOWED; 10629 } 10630 return ERROR_CODE_SUCCESS; 10631 } 10632 10633 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10634 le_audio_big_t * big = hci_big_for_handle(big_handle); 10635 if (big == NULL){ 10636 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10637 } 10638 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10639 return ERROR_CODE_COMMAND_DISALLOWED; 10640 } 10641 big->can_send_now_requested = true; 10642 hci_iso_notify_can_send_now(); 10643 return ERROR_CODE_SUCCESS; 10644 } 10645 10646 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10647 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10648 if (iso_stream == NULL){ 10649 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10650 } 10651 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10652 return ERROR_CODE_COMMAND_DISALLOWED; 10653 } 10654 iso_stream->can_send_now_requested = true; 10655 hci_iso_notify_can_send_now(); 10656 return ERROR_CODE_SUCCESS; 10657 } 10658 10659 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10660 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10661 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10662 } 10663 if (cig_params->num_cis == 0){ 10664 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10665 } 10666 if (cig_params->num_cis > MAX_NR_CIS){ 10667 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10668 } 10669 10670 // reserve ISO Streams 10671 uint8_t i; 10672 uint8_t status = ERROR_CODE_SUCCESS; 10673 for (i=0;i<cig_params->num_cis;i++){ 10674 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10675 if (iso_stream == NULL) { 10676 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10677 break; 10678 } 10679 } 10680 10681 // free structs on error 10682 if (status != ERROR_CODE_SUCCESS){ 10683 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10684 return status; 10685 } 10686 10687 le_audio_cig_t * cig = storage; 10688 cig->cig_id = cig_params->cig_id; 10689 cig->num_cis = cig_params->num_cis; 10690 cig->params = cig_params; 10691 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10692 for (i=0;i<cig->num_cis;i++){ 10693 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10694 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10695 cig->cis_setup_active[i] = false; 10696 cig->cis_established[i] = false; 10697 } 10698 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10699 10700 hci_run(); 10701 10702 return ERROR_CODE_SUCCESS; 10703 } 10704 10705 uint8_t gap_cig_remove(uint8_t cig_id){ 10706 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10707 if (cig == NULL){ 10708 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10709 } 10710 10711 // close active CIS 10712 uint8_t i; 10713 for (i=0;i<cig->num_cis;i++){ 10714 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10715 if (stream != NULL){ 10716 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10717 } 10718 } 10719 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10720 10721 hci_run(); 10722 10723 return ERROR_CODE_SUCCESS; 10724 } 10725 10726 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10727 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10728 if (cig == NULL){ 10729 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10730 } 10731 10732 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10733 return ERROR_CODE_COMMAND_DISALLOWED; 10734 } 10735 10736 // store ACL Connection Handles 10737 uint8_t i; 10738 for (i=0;i<cig->num_cis;i++){ 10739 // check that all con handles exist and store 10740 hci_con_handle_t cis_handle = cis_con_handles[i]; 10741 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10742 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10743 } 10744 uint8_t j; 10745 bool found = false; 10746 for (j=0;j<cig->num_cis;j++){ 10747 if (cig->cis_con_handles[j] == cis_handle){ 10748 cig->acl_con_handles[j] = acl_con_handles[j]; 10749 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10750 btstack_assert(iso_stream != NULL); 10751 iso_stream->acl_handle = acl_con_handles[j]; 10752 found = true; 10753 break; 10754 } 10755 } 10756 if (!found){ 10757 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10758 } 10759 } 10760 10761 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10762 hci_run(); 10763 10764 return ERROR_CODE_SUCCESS; 10765 } 10766 10767 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10768 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10769 if (iso_stream == NULL){ 10770 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10771 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10772 } 10773 10774 // set next state and continue 10775 iso_stream->state = state; 10776 hci_run(); 10777 return ERROR_CODE_SUCCESS; 10778 } 10779 10780 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10781 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10782 } 10783 10784 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10785 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10786 } 10787 10788 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10789 10790 // GAP Privacy - notify clients before random address update 10791 10792 static bool gap_privacy_client_all_ready(void){ 10793 // check if all ready 10794 btstack_linked_list_iterator_t it; 10795 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10796 while (btstack_linked_list_iterator_has_next(&it)) { 10797 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10798 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10799 return false; 10800 } 10801 } 10802 return true; 10803 } 10804 10805 static void gap_privacy_clients_handle_ready(void){ 10806 // clear 'ready' 10807 btstack_linked_list_iterator_t it; 10808 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10809 while (btstack_linked_list_iterator_has_next(&it)) { 10810 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10811 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10812 } 10813 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10814 hci_run(); 10815 } 10816 10817 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10818 btstack_linked_list_iterator_t it; 10819 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10820 while (btstack_linked_list_iterator_has_next(&it)) { 10821 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10822 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10823 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10824 (*client->callback)(client, new_random_address); 10825 } 10826 } 10827 if (gap_privacy_client_all_ready()){ 10828 gap_privacy_clients_handle_ready(); 10829 } 10830 } 10831 10832 void gap_privacy_client_register(gap_privacy_client_t * client){ 10833 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10834 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10835 } 10836 10837 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10838 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10839 if (gap_privacy_client_all_ready()){ 10840 gap_privacy_clients_handle_ready(); 10841 } 10842 } 10843 10844 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10845 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10846 } 10847 10848 #endif /* ENABLE_BLE */ 10849 10850 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10851 void hci_setup_test_connections_fuzz(void){ 10852 hci_connection_t * conn; 10853 10854 // default address: 66:55:44:33:00:01 10855 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10856 10857 // setup Controller info 10858 hci_stack->num_cmd_packets = 255; 10859 hci_stack->acl_packets_total_num = 255; 10860 10861 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10862 addr[5] = 0x01; 10863 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10864 conn->con_handle = addr[5]; 10865 conn->state = RECEIVED_CONNECTION_REQUEST; 10866 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10867 10868 // setup incoming Classic SCO connection with con handle 0x0002 10869 addr[5] = 0x02; 10870 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10871 conn->con_handle = addr[5]; 10872 conn->state = RECEIVED_CONNECTION_REQUEST; 10873 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10874 10875 // setup ready Classic ACL connection with con handle 0x0003 10876 addr[5] = 0x03; 10877 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10878 conn->con_handle = addr[5]; 10879 conn->state = OPEN; 10880 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10881 10882 // setup ready Classic SCO connection with con handle 0x0004 10883 addr[5] = 0x04; 10884 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10885 conn->con_handle = addr[5]; 10886 conn->state = OPEN; 10887 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10888 10889 // setup ready LE ACL connection with con handle 0x005 and public address 10890 addr[5] = 0x05; 10891 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10892 conn->con_handle = addr[5]; 10893 conn->state = OPEN; 10894 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10895 conn->sm_connection.sm_connection_encrypted = 1; 10896 } 10897 10898 void hci_free_connections_fuzz(void){ 10899 btstack_linked_list_iterator_t it; 10900 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10901 while (btstack_linked_list_iterator_has_next(&it)){ 10902 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10903 btstack_linked_list_iterator_remove(&it); 10904 btstack_memory_hci_connection_free(con); 10905 } 10906 } 10907 void hci_simulate_working_fuzz(void){ 10908 hci_stack->le_scanning_param_update = false; 10909 hci_init_done(); 10910 hci_stack->num_cmd_packets = 255; 10911 } 10912 #endif 10913