1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 6) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES , 27, 5) \ 171 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 172 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 173 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 175 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 176 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 178 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 5) \ 179 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 180 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 181 182 // enumerate supported commands 183 #define X(name, offset, bit) name, 184 enum { 185 SUPPORTED_HCI_COMMANDS 186 SUPPORTED_HCI_COMMANDS_COUNT 187 }; 188 #undef X 189 190 // prototypes 191 #ifdef ENABLE_CLASSIC 192 static void hci_update_scan_enable(void); 193 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 194 static int hci_local_ssp_activated(void); 195 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 196 static bool hci_ssp_supported(hci_connection_t * connection); 197 static void hci_notify_if_sco_can_send_now(void); 198 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 199 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 200 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 201 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 202 static void hci_connection_timestamp(hci_connection_t *connection); 203 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 204 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 205 #endif 206 207 static int hci_power_control_on(void); 208 static void hci_power_control_off(void); 209 static void hci_state_reset(void); 210 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 211 static void hci_emit_transport_packet_sent(void); 212 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 213 static void hci_emit_nr_connections_changed(void); 214 static void hci_emit_hci_open_failed(void); 215 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 216 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 217 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump); 218 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 219 static void hci_run(void); 220 static bool hci_is_le_connection(hci_connection_t * connection); 221 static uint8_t hci_send_prepared_cmd_packet(void); 222 223 #ifdef ENABLE_CLASSIC 224 static int hci_have_usb_transport(void); 225 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 226 #endif 227 228 #ifdef ENABLE_BLE 229 static bool hci_run_general_gap_le(void); 230 static void gap_privacy_clients_handle_ready(void); 231 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 232 #ifdef ENABLE_LE_CENTRAL 233 // called from test/ble_client/advertising_data_parser.c 234 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 235 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 236 static hci_connection_t * gap_get_outgoing_le_connection(void); 237 static void hci_le_scan_stop(void); 238 #endif 239 #ifdef ENABLE_LE_PERIPHERAL 240 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 241 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 242 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len); 243 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size); 244 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 245 #endif /* ENABLE_LE_PERIPHERAL */ 246 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 247 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 248 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 249 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 250 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 251 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 252 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 253 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 254 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 255 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 256 static void hci_iso_notify_can_send_now(void); 257 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 258 static void hci_emit_big_terminated(const le_audio_big_t * big); 259 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 260 static void hci_emit_big_sync_stopped(uint8_t big_handle); 261 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 262 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 263 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 264 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 265 #endif /* ENABLE_BLE */ 266 267 // the STACK is here 268 #ifndef HAVE_MALLOC 269 static hci_stack_t hci_stack_static; 270 #endif 271 static hci_stack_t * hci_stack = NULL; 272 273 #ifdef ENABLE_CLASSIC 274 // default name 275 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 276 277 // test helper 278 static uint8_t disable_l2cap_timeouts = 0; 279 #endif 280 281 // reset connection state on create and on reconnect 282 // don't overwrite addr, con handle, role 283 static void hci_connection_init(hci_connection_t * conn){ 284 conn->authentication_flags = AUTH_FLAG_NONE; 285 conn->bonding_flags = 0; 286 conn->requested_security_level = LEVEL_0; 287 conn->link_key_type = INVALID_LINK_KEY; 288 #ifdef ENABLE_CLASSIC 289 conn->request_role = HCI_ROLE_INVALID; 290 conn->sniff_subrating_max_latency = 0xffff; 291 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 292 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 293 btstack_run_loop_set_timer_context(&conn->timeout, conn); 294 hci_connection_timestamp(conn); 295 #endif 296 conn->acl_recombination_length = 0; 297 conn->acl_recombination_pos = 0; 298 conn->num_packets_sent = 0; 299 300 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 301 #ifdef ENABLE_BLE 302 conn->le_phy_update_all_phys = 0xff; 303 #endif 304 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 305 conn->le_max_tx_octets = 27; 306 #endif 307 #ifdef ENABLE_CLASSIC_PAIRING_OOB 308 conn->classic_oob_c_192 = NULL; 309 conn->classic_oob_r_192 = NULL; 310 conn->classic_oob_c_256 = NULL; 311 conn->classic_oob_r_256 = NULL; 312 #endif 313 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 314 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 315 conn->le_past_advertising_handle = 0xff; 316 #endif 317 } 318 319 /** 320 * create connection for given address 321 * 322 * @return connection OR NULL, if no memory left 323 */ 324 static hci_connection_t * 325 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 326 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 327 328 hci_connection_t * conn = btstack_memory_hci_connection_get(); 329 if (!conn) return NULL; 330 hci_connection_init(conn); 331 332 bd_addr_copy(conn->address, addr); 333 conn->address_type = addr_type; 334 conn->con_handle = HCI_CON_HANDLE_INVALID; 335 conn->role = role; 336 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 337 338 return conn; 339 } 340 341 342 /** 343 * get le connection parameter range 344 * 345 * @return le connection parameter range struct 346 */ 347 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 348 *range = hci_stack->le_connection_parameter_range; 349 } 350 351 /** 352 * set le connection parameter range 353 * 354 */ 355 356 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 357 hci_stack->le_connection_parameter_range = *range; 358 } 359 360 /** 361 * @brief Test if connection parameters are inside in existing rage 362 * @param conn_interval_min (unit: 1.25ms) 363 * @param conn_interval_max (unit: 1.25ms) 364 * @param conn_latency 365 * @param supervision_timeout (unit: 10ms) 366 * @return 1 if included 367 */ 368 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 369 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 370 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 371 372 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 373 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 374 375 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 376 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 377 378 return 1; 379 } 380 381 /** 382 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 383 * @note: default: 1 384 * @param max_peripheral_connections 385 */ 386 #ifdef ENABLE_LE_PERIPHERAL 387 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 388 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 389 } 390 #endif 391 392 /** 393 * get hci connections iterator 394 * 395 * @return hci connections iterator 396 */ 397 398 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 399 btstack_linked_list_iterator_init(it, &hci_stack->connections); 400 } 401 402 /** 403 * get connection for a given handle 404 * 405 * @return connection OR NULL, if not found 406 */ 407 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 408 btstack_linked_list_iterator_t it; 409 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 410 while (btstack_linked_list_iterator_has_next(&it)){ 411 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 412 if ( item->con_handle == con_handle ) { 413 return item; 414 } 415 } 416 return NULL; 417 } 418 419 /** 420 * get connection for given address 421 * 422 * @return connection OR NULL, if not found 423 */ 424 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 425 btstack_linked_list_iterator_t it; 426 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 427 while (btstack_linked_list_iterator_has_next(&it)){ 428 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 429 if (connection->address_type != addr_type) continue; 430 if (memcmp(addr, connection->address, 6) != 0) continue; 431 return connection; 432 } 433 return NULL; 434 } 435 436 #ifdef ENABLE_CLASSIC 437 438 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 439 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 440 } 441 442 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 443 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 444 } 445 446 #ifdef ENABLE_SCO_OVER_HCI 447 static int hci_number_sco_connections(void){ 448 int connections = 0; 449 btstack_linked_list_iterator_t it; 450 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 451 while (btstack_linked_list_iterator_has_next(&it)){ 452 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 453 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 454 connections++; 455 } 456 return connections; 457 } 458 #endif 459 460 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 461 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 462 #ifdef HAVE_EMBEDDED_TICK 463 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 464 // connections might be timed out 465 hci_emit_l2cap_check_timeout(connection); 466 } 467 #else 468 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 469 // connections might be timed out 470 hci_emit_l2cap_check_timeout(connection); 471 } 472 #endif 473 } 474 475 static void hci_connection_timestamp(hci_connection_t *connection){ 476 #ifdef HAVE_EMBEDDED_TICK 477 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 478 #else 479 connection->timestamp = btstack_run_loop_get_time_ms(); 480 #endif 481 } 482 483 /** 484 * add authentication flags and reset timer 485 * @note: assumes classic connection 486 * @note: bd_addr is passed in as little endian uint8_t * as it is called from parsing packets 487 */ 488 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 489 bd_addr_t addr; 490 reverse_bd_addr(bd_addr, addr); 491 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 492 if (conn) { 493 connectionSetAuthenticationFlags(conn, flags); 494 hci_connection_timestamp(conn); 495 } 496 } 497 498 static bool hci_pairing_active(hci_connection_t * hci_connection){ 499 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 500 } 501 502 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 503 if (hci_pairing_active(hci_connection)) return; 504 if (ssp){ 505 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 506 } else { 507 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 508 } 509 // if we are initiator, we have sent an HCI Authenticate Request 510 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 511 512 // if we are responder, use minimal service security level as required level 513 if (!initiator){ 514 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 515 } 516 517 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 518 519 uint8_t event[12]; 520 event[0] = GAP_EVENT_PAIRING_STARTED; 521 event[1] = 10; 522 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 523 reverse_bd_addr(hci_connection->address, &event[4]); 524 event[10] = (uint8_t) ssp; 525 event[11] = (uint8_t) initiator; 526 hci_emit_btstack_event(event, sizeof(event), 1); 527 } 528 529 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 530 hci_connection->requested_security_level = LEVEL_0; 531 if (!hci_pairing_active(hci_connection)) return; 532 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 533 #ifdef ENABLE_CLASSIC_PAIRING_OOB 534 hci_connection->classic_oob_c_192 = NULL; 535 hci_connection->classic_oob_r_192 = NULL; 536 hci_connection->classic_oob_c_256 = NULL; 537 hci_connection->classic_oob_r_256 = NULL; 538 #endif 539 log_info("pairing complete, status %02x", status); 540 541 uint8_t event[11]; 542 event[0] = GAP_EVENT_PAIRING_COMPLETE; 543 event[1] = 9; 544 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 545 reverse_bd_addr(hci_connection->address, &event[4]); 546 event[10] = status; 547 hci_emit_btstack_event(event, sizeof(event), 1); 548 549 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 550 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 551 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 552 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 553 hci_connection->bonding_status = status; 554 } 555 } 556 557 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 558 hci_connection_t * conn = hci_connection_for_handle(handle); 559 if (!conn) return false; 560 return hci_pairing_active(conn); 561 } 562 563 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 566 hci_stack->link_key_db->delete_link_key(addr); 567 } 568 569 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 570 if (!hci_stack->link_key_db) return; 571 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 572 hci_stack->link_key_db->put_link_key(addr, link_key, type); 573 } 574 575 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 576 if (!hci_stack->link_key_db) return false; 577 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 578 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 579 return result; 580 } 581 582 void gap_delete_all_link_keys(void){ 583 bd_addr_t addr; 584 link_key_t link_key; 585 link_key_type_t type; 586 btstack_link_key_iterator_t it; 587 int ok = gap_link_key_iterator_init(&it); 588 if (!ok) { 589 log_error("could not initialize iterator"); 590 return; 591 } 592 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 593 gap_drop_link_key_for_bd_addr(addr); 594 } 595 gap_link_key_iterator_done(&it); 596 } 597 598 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 599 if (!hci_stack->link_key_db) return 0; 600 if (!hci_stack->link_key_db->iterator_init) return 0; 601 return hci_stack->link_key_db->iterator_init(it); 602 } 603 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 604 if (!hci_stack->link_key_db) return 0; 605 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 606 } 607 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 608 if (!hci_stack->link_key_db) return; 609 hci_stack->link_key_db->iterator_done(it); 610 } 611 #endif 612 613 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 614 switch (address_type){ 615 case BD_ADDR_TYPE_LE_PUBLIC: 616 case BD_ADDR_TYPE_LE_RANDOM: 617 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 618 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 619 return true; 620 default: 621 return false; 622 } 623 } 624 625 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 626 switch (address_type){ 627 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 628 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 629 return true; 630 default: 631 return false; 632 } 633 } 634 635 static bool hci_is_le_connection(hci_connection_t * connection){ 636 return hci_is_le_connection_type(connection->address_type); 637 } 638 639 /** 640 * count connections 641 */ 642 static int nr_hci_connections(void){ 643 int count = 0; 644 btstack_linked_item_t *it; 645 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 646 count++; 647 } 648 return count; 649 } 650 651 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 652 653 unsigned int num_packets_sent_classic = 0; 654 unsigned int num_packets_sent_le = 0; 655 656 btstack_linked_item_t *it; 657 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 658 hci_connection_t * connection = (hci_connection_t *) it; 659 if (hci_is_le_connection(connection)){ 660 num_packets_sent_le += connection->num_packets_sent; 661 } 662 if (connection->address_type == BD_ADDR_TYPE_ACL){ 663 num_packets_sent_classic += connection->num_packets_sent; 664 } 665 } 666 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 667 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 668 int free_slots_le = 0; 669 670 if (free_slots_classic < 0){ 671 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 672 return 0; 673 } 674 675 if (hci_stack->le_acl_packets_total_num){ 676 // if we have LE slots, they are used 677 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 678 if (free_slots_le < 0){ 679 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 680 return 0; 681 } 682 } else { 683 // otherwise, classic slots are used for LE, too 684 free_slots_classic -= num_packets_sent_le; 685 if (free_slots_classic < 0){ 686 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 687 return 0; 688 } 689 } 690 691 switch (address_type){ 692 case BD_ADDR_TYPE_UNKNOWN: 693 log_error("hci_number_free_acl_slots: unknown address type"); 694 return 0; 695 696 case BD_ADDR_TYPE_ACL: 697 return (uint16_t) free_slots_classic; 698 699 default: 700 if (hci_stack->le_acl_packets_total_num > 0){ 701 return (uint16_t) free_slots_le; 702 } 703 return (uint16_t) free_slots_classic; 704 } 705 } 706 707 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 708 // get connection type 709 hci_connection_t * connection = hci_connection_for_handle(con_handle); 710 if (!connection){ 711 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 712 return 0; 713 } 714 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 715 } 716 717 #ifdef ENABLE_CLASSIC 718 static int hci_number_free_sco_slots(void){ 719 unsigned int num_sco_packets_sent = 0; 720 btstack_linked_item_t *it; 721 if (hci_stack->synchronous_flow_control_enabled){ 722 // explicit flow control 723 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 724 hci_connection_t * connection = (hci_connection_t *) it; 725 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 726 num_sco_packets_sent += connection->num_packets_sent; 727 } 728 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 729 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 730 return 0; 731 } 732 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 733 } else { 734 // implicit flow control 735 int num_ready = 0; 736 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 737 hci_connection_t * connection = (hci_connection_t *) it; 738 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 739 if (connection->sco_tx_ready == 0) continue; 740 num_ready++; 741 } 742 return num_ready; 743 } 744 } 745 #endif 746 747 // only used to send HCI Host Number Completed Packets 748 static int hci_can_send_command_packet_transport(void){ 749 if (hci_stack->hci_packet_buffer_reserved) return 0; 750 751 // check for async hci transport implementations 752 if (hci_stack->hci_transport->can_send_packet_now){ 753 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 754 return 0; 755 } 756 } 757 return 1; 758 } 759 760 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 761 bool hci_can_send_command_packet_now(void){ 762 if (hci_can_send_command_packet_transport() == 0) return false; 763 return hci_stack->num_cmd_packets > 0u; 764 } 765 766 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 767 // check for async hci transport implementations 768 if (!hci_stack->hci_transport->can_send_packet_now) return true; 769 return hci_stack->hci_transport->can_send_packet_now(packet_type); 770 } 771 772 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 773 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 774 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 775 } 776 777 bool hci_can_send_acl_le_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 780 } 781 782 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 783 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 784 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 785 } 786 787 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 788 if (hci_stack->hci_packet_buffer_reserved) return false; 789 return hci_can_send_prepared_acl_packet_now(con_handle); 790 } 791 792 #ifdef ENABLE_CLASSIC 793 bool hci_can_send_acl_classic_packet_now(void){ 794 if (hci_stack->hci_packet_buffer_reserved) return false; 795 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 796 } 797 798 bool hci_can_send_prepared_sco_packet_now(void){ 799 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 800 if (hci_have_usb_transport()){ 801 return hci_stack->sco_can_send_now; 802 } else { 803 return hci_number_free_sco_slots() > 0; 804 } 805 } 806 807 bool hci_can_send_sco_packet_now(void){ 808 if (hci_stack->hci_packet_buffer_reserved) return false; 809 return hci_can_send_prepared_sco_packet_now(); 810 } 811 812 void hci_request_sco_can_send_now_event(void){ 813 hci_stack->sco_waiting_for_can_send_now = 1; 814 hci_notify_if_sco_can_send_now(); 815 } 816 #endif 817 818 // used for internal checks in l2cap.c 819 bool hci_is_packet_buffer_reserved(void){ 820 return hci_stack->hci_packet_buffer_reserved; 821 } 822 823 void hci_reserve_packet_buffer(void){ 824 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 825 hci_stack->hci_packet_buffer_reserved = true; 826 } 827 828 void hci_release_packet_buffer(void){ 829 btstack_assert(hci_stack->hci_packet_buffer_reserved); 830 hci_stack->hci_packet_buffer_reserved = false; 831 hci_emit_transport_packet_sent(); 832 } 833 834 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 835 static int hci_transport_synchronous(void){ 836 return hci_stack->hci_transport->can_send_packet_now == NULL; 837 } 838 839 // used for debugging 840 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 841 static void hci_controller_dump_packets(void){ 842 // format: "{handle:04x}:{count:02d} " 843 char summaries[3][7 * 8 + 1]; 844 uint16_t totals[3]; 845 uint8_t index; 846 for (index = 0 ; index < 3 ; index++){ 847 summaries[index][0] = 0; 848 totals[index] = 0; 849 } 850 btstack_linked_item_t *it; 851 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 852 hci_connection_t * connection = (hci_connection_t *) it; 853 switch (connection->address_type){ 854 case BD_ADDR_TYPE_ACL: 855 index = 0; 856 break; 857 case BD_ADDR_TYPE_SCO: 858 index = 2; 859 break; 860 default: 861 index = 1; 862 break; 863 } 864 totals[index] += connection->num_packets_sent; 865 char item_text[10]; 866 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 867 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 868 } 869 for (index = 0 ; index < 3 ; index++){ 870 if (summaries[index][0] == 0){ 871 summaries[index][0] = '-'; 872 summaries[index][1] = 0; 873 } 874 } 875 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 876 } 877 #endif 878 879 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 880 881 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 882 883 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 884 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 885 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 886 max_acl_data_packet_length = hci_stack->le_data_packets_length; 887 } 888 889 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 890 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 891 max_acl_data_packet_length = connection->le_max_tx_octets; 892 } 893 #endif 894 895 log_debug("hci_send_acl_packet_fragments entered"); 896 897 uint8_t status = ERROR_CODE_SUCCESS; 898 // multiple packets could be sent on a synchronous HCI transport 899 while (true){ 900 901 log_debug("hci_send_acl_packet_fragments loop entered"); 902 903 // get current data 904 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 905 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 906 bool more_fragments = false; 907 908 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 909 if (current_acl_data_packet_length > max_acl_data_packet_length){ 910 more_fragments = true; 911 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 912 } 913 914 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragment) 915 if (acl_header_pos > 0u){ 916 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 917 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 918 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 919 } 920 921 // update header len 922 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 923 924 // count packet 925 connection->num_packets_sent++; 926 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 927 928 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 929 if (more_fragments){ 930 // update start of next fragment to send 931 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 932 } else { 933 // done 934 hci_stack->acl_fragmentation_pos = 0; 935 hci_stack->acl_fragmentation_total_size = 0; 936 } 937 938 // send packet 939 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 940 const int size = current_acl_data_packet_length + 4; 941 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 942 hci_stack->acl_fragmentation_tx_active = 1; 943 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 944 if (err != 0){ 945 // no error from HCI Transport expected 946 status = ERROR_CODE_HARDWARE_FAILURE; 947 break; 948 } 949 950 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 951 hci_controller_dump_packets(); 952 #endif 953 954 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 955 956 // done yet? 957 if (!more_fragments) break; 958 959 // can send more? 960 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 961 } 962 963 log_debug("hci_send_acl_packet_fragments loop over"); 964 965 // release buffer now for synchronous transport 966 if (hci_transport_synchronous()){ 967 hci_stack->acl_fragmentation_tx_active = 0; 968 hci_release_packet_buffer(); 969 } 970 971 return status; 972 } 973 974 // pre: caller has reserved the packet buffer 975 uint8_t hci_send_acl_packet_buffer(int size){ 976 btstack_assert(hci_stack->hci_packet_buffer_reserved); 977 978 uint8_t * packet = hci_stack->hci_packet_buffer; 979 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 980 981 hci_connection_t *connection = hci_connection_for_handle( con_handle); 982 if (!connection) { 983 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 984 hci_release_packet_buffer(); 985 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 986 } 987 988 // check for free places on Bluetooth module 989 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 990 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 991 hci_release_packet_buffer(); 992 return BTSTACK_ACL_BUFFERS_FULL; 993 } 994 995 #ifdef ENABLE_CLASSIC 996 hci_connection_timestamp(connection); 997 #endif 998 999 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 1000 1001 // setup data 1002 hci_stack->acl_fragmentation_total_size = size; 1003 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1004 1005 return hci_send_acl_packet_fragments(connection); 1006 } 1007 1008 #ifdef ENABLE_CLASSIC 1009 // pre: caller has reserved the packet buffer 1010 uint8_t hci_send_sco_packet_buffer(int size){ 1011 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1012 1013 uint8_t * packet = hci_stack->hci_packet_buffer; 1014 1015 // skip checks in loopback mode 1016 if (!hci_stack->loopback_mode){ 1017 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1018 1019 // check for free places on Bluetooth module 1020 if (!hci_can_send_prepared_sco_packet_now()) { 1021 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1022 hci_release_packet_buffer(); 1023 return BTSTACK_ACL_BUFFERS_FULL; 1024 } 1025 1026 // track send packet in connection struct 1027 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1028 if (!connection) { 1029 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1030 hci_release_packet_buffer(); 1031 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1032 } 1033 1034 if (hci_have_usb_transport()){ 1035 // token used 1036 hci_stack->sco_can_send_now = false; 1037 } else { 1038 if (hci_stack->synchronous_flow_control_enabled){ 1039 connection->num_packets_sent++; 1040 } else { 1041 connection->sco_tx_ready--; 1042 } 1043 } 1044 } 1045 1046 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1047 1048 #ifdef HAVE_SCO_TRANSPORT 1049 hci_stack->sco_transport->send_packet(packet, size); 1050 hci_release_packet_buffer(); 1051 hci_emit_transport_packet_sent(); 1052 1053 return 0; 1054 #else 1055 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1056 uint8_t status; 1057 if (err == 0){ 1058 status = ERROR_CODE_SUCCESS; 1059 } else { 1060 status = ERROR_CODE_HARDWARE_FAILURE; 1061 } 1062 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 1063 hci_release_packet_buffer(); 1064 } 1065 return status; 1066 #endif 1067 } 1068 #endif 1069 1070 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1071 static uint8_t hci_send_iso_packet_fragments(void){ 1072 1073 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1074 uint8_t status = ERROR_CODE_SUCCESS; 1075 // multiple packets could be send on a synchronous HCI transport 1076 while (true){ 1077 1078 // get current data 1079 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1080 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1081 bool more_fragments = false; 1082 1083 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1084 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1085 more_fragments = true; 1086 current_iso_data_packet_length = max_iso_data_packet_length; 1087 } 1088 1089 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1090 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1091 uint8_t pb_flags; 1092 if (iso_header_pos == 0u){ 1093 // first fragment, keep TS field 1094 pb_flags = more_fragments ? 0x00 : 0x02; 1095 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1096 } else { 1097 // later fragment, drop TS field 1098 pb_flags = more_fragments ? 0x01 : 0x03; 1099 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1100 } 1101 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1102 1103 // update header len 1104 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1105 1106 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1107 if (more_fragments){ 1108 // update start of next fragment to send 1109 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1110 } else { 1111 // done 1112 hci_stack->iso_fragmentation_pos = 0; 1113 hci_stack->iso_fragmentation_total_size = 0; 1114 } 1115 1116 // send packet 1117 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1118 const int size = current_iso_data_packet_length + 4; 1119 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1120 hci_stack->iso_fragmentation_tx_active = true; 1121 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1122 if (err != 0){ 1123 // no error from HCI Transport expected 1124 status = ERROR_CODE_HARDWARE_FAILURE; 1125 } 1126 1127 // done yet? 1128 if (!more_fragments) break; 1129 1130 // can send more? 1131 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1132 } 1133 1134 // release buffer now for synchronous transport 1135 if (hci_transport_synchronous()){ 1136 hci_stack->iso_fragmentation_tx_active = false; 1137 hci_release_packet_buffer(); 1138 hci_emit_transport_packet_sent(); 1139 } 1140 1141 return status; 1142 } 1143 1144 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1145 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1146 1147 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1148 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1149 if (iso_stream == NULL){ 1150 hci_release_packet_buffer(); 1151 hci_iso_notify_can_send_now(); 1152 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1153 } 1154 1155 // TODO: check for space on controller 1156 1157 // skip iso packets if needed 1158 if (iso_stream->num_packets_to_skip > 0){ 1159 iso_stream->num_packets_to_skip--; 1160 // pretend it was processed and trigger next one 1161 hci_release_packet_buffer(); 1162 hci_iso_notify_can_send_now(); 1163 return ERROR_CODE_SUCCESS; 1164 } 1165 1166 // track outgoing packet sent 1167 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1168 iso_stream->num_packets_sent++; 1169 1170 // setup data 1171 hci_stack->iso_fragmentation_total_size = size; 1172 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1173 1174 return hci_send_iso_packet_fragments(); 1175 } 1176 #endif 1177 1178 static void acl_handler(uint8_t *packet, uint16_t size){ 1179 1180 // get info 1181 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1182 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1183 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1184 uint16_t acl_length = READ_ACL_LENGTH(packet); 1185 1186 // ignore non-registered handle 1187 if (!conn){ 1188 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1189 return; 1190 } 1191 1192 // assert packet is complete 1193 if ((acl_length + 4u) != size){ 1194 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1195 return; 1196 } 1197 1198 #ifdef ENABLE_CLASSIC 1199 // update idle timestamp 1200 hci_connection_timestamp(conn); 1201 #endif 1202 1203 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1204 hci_stack->host_completed_packets = 1; 1205 conn->num_packets_completed++; 1206 #endif 1207 1208 // handle different packet types 1209 switch (acl_flags & 0x03u) { 1210 1211 case 0x01: // continuation fragment 1212 1213 // sanity checks 1214 if (conn->acl_recombination_pos == 0u) { 1215 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1216 return; 1217 } 1218 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1219 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1220 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1221 conn->acl_recombination_pos = 0; 1222 return; 1223 } 1224 1225 // append fragment payload (header already stored) 1226 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1227 &packet[4], acl_length); 1228 conn->acl_recombination_pos += acl_length; 1229 1230 // forward complete L2CAP packet if complete. 1231 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1232 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1233 // reset recombination buffer 1234 conn->acl_recombination_length = 0; 1235 conn->acl_recombination_pos = 0; 1236 } 1237 break; 1238 1239 case 0x02: { // first fragment 1240 1241 // sanity check 1242 if (conn->acl_recombination_pos) { 1243 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1244 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1245 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1246 } 1247 conn->acl_recombination_pos = 0; 1248 } 1249 1250 // peek into L2CAP packet! 1251 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1252 1253 // compare fragment size to L2CAP packet size 1254 if (acl_length >= (l2cap_length + 4u)){ 1255 // forward fragment as L2CAP packet 1256 hci_emit_acl_packet(packet, acl_length + 4u); 1257 } else { 1258 1259 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1260 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1261 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1262 return; 1263 } 1264 1265 // store first fragment and tweak acl length for complete package 1266 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1267 packet, acl_length + 4u); 1268 conn->acl_recombination_pos = acl_length + 4u; 1269 conn->acl_recombination_length = l2cap_length; 1270 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1271 } 1272 break; 1273 1274 } 1275 default: 1276 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1277 return; 1278 } 1279 1280 // execute main loop 1281 hci_run(); 1282 } 1283 1284 static void hci_connection_stop_timer(hci_connection_t * conn){ 1285 btstack_run_loop_remove_timer(&conn->timeout); 1286 #ifdef ENABLE_CLASSIC 1287 btstack_run_loop_remove_timer(&conn->timeout_sco); 1288 #endif 1289 } 1290 1291 static void hci_shutdown_connection(hci_connection_t *conn){ 1292 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1293 1294 #ifdef ENABLE_CLASSIC 1295 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1296 bd_addr_type_t addr_type = conn->address_type; 1297 #endif 1298 #ifdef HAVE_SCO_TRANSPORT 1299 hci_con_handle_t con_handle = conn->con_handle; 1300 #endif 1301 #endif 1302 1303 hci_connection_stop_timer(conn); 1304 1305 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1306 btstack_memory_hci_connection_free( conn ); 1307 1308 // now it's gone 1309 hci_emit_nr_connections_changed(); 1310 1311 #ifdef ENABLE_CLASSIC 1312 #ifdef ENABLE_SCO_OVER_HCI 1313 // update SCO 1314 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1315 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1316 } 1317 #endif 1318 #ifdef HAVE_SCO_TRANSPORT 1319 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1320 hci_stack->sco_transport->close(con_handle); 1321 } 1322 #endif 1323 #endif 1324 } 1325 1326 #ifdef ENABLE_CLASSIC 1327 1328 static const uint16_t hci_acl_packet_type_sizes[] = { 1329 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1330 HCI_ACL_DH1_SIZE, 0, 0, 0, 1331 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1332 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1333 }; 1334 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1335 0, // 3 slot packets 1336 1, // 5 slot packets 1337 25, // EDR 2 mpbs 1338 26, // EDR 3 mbps 1339 39, // 3 slot EDR packtes 1340 40, // 5 slot EDR packet 1341 }; 1342 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1343 0x0f00, // 3 slot packets 1344 0xf000, // 5 slot packets 1345 0x1102, // EDR 2 mpbs 1346 0x2204, // EDR 3 mbps 1347 0x0300, // 3 slot EDR packtes 1348 0x3000, // 5 slot EDR packet 1349 }; 1350 1351 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1352 // enable packet types based on size 1353 uint16_t packet_types = 0; 1354 unsigned int i; 1355 for (i=0;i<16;i++){ 1356 if (hci_acl_packet_type_sizes[i] == 0) continue; 1357 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1358 packet_types |= 1 << i; 1359 } 1360 } 1361 // disable packet types due to missing local supported features 1362 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1363 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1364 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1365 if (feature_set) continue; 1366 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1367 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1368 } 1369 return packet_types; 1370 } 1371 1372 uint16_t hci_usable_acl_packet_types(void){ 1373 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1374 // flip bits for "may not be used" 1375 return active_packet_types ^ 0x3306; 1376 } 1377 1378 void hci_enable_acl_packet_types(uint16_t packet_types){ 1379 hci_stack->enabled_packet_types_acl = packet_types; 1380 } 1381 1382 static const struct { 1383 uint8_t feature_index; 1384 uint16_t feature_packet_mask; 1385 } hci_sco_packet_type_feature_requirements[] = { 1386 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1387 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1388 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1389 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1390 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1391 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1392 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1393 }; 1394 1395 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1396 static const struct { 1397 uint16_t type; 1398 uint16_t payload_length; 1399 } hci_sco_packet_type_to_payload_length[] = { 1400 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1401 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1402 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1403 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1404 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1405 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1406 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1407 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1408 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1409 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1410 }; 1411 1412 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1413 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1414 unsigned int i; 1415 // disable packet types due to missing local supported features 1416 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1417 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1418 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1419 if (feature_set) continue; 1420 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1421 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1422 } 1423 return packet_types; 1424 } 1425 1426 uint16_t hci_usable_sco_packet_types(void){ 1427 return hci_stack->usable_packet_types_sco; 1428 } 1429 1430 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1431 uint8_t i; 1432 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1433 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1434 return hci_sco_packet_type_to_payload_length[i].payload_length; 1435 } 1436 } 1437 return 0; 1438 } 1439 1440 #endif 1441 1442 uint8_t* hci_get_outgoing_packet_buffer(void){ 1443 // hci packet buffer is >= acl data packet length 1444 return hci_stack->hci_packet_buffer; 1445 } 1446 1447 uint16_t hci_max_acl_data_packet_length(void){ 1448 return hci_stack->acl_data_packet_length; 1449 } 1450 1451 #ifdef ENABLE_CLASSIC 1452 bool hci_extended_sco_link_supported(void){ 1453 // No. 31, byte 3, bit 7 1454 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1455 } 1456 #endif 1457 1458 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1459 // No. 54, byte 6, bit 6 1460 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1461 } 1462 1463 #ifdef ENABLE_CLASSIC 1464 static bool gap_ssp_supported(void){ 1465 // No. 51, byte 6, bit 3 1466 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1467 } 1468 #endif 1469 1470 bool hci_classic_supported(void){ 1471 #ifdef ENABLE_CLASSIC 1472 // No. 37, byte 4, bit 5, = No BR/EDR Support 1473 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1474 #else 1475 return false; 1476 #endif 1477 } 1478 1479 bool hci_le_supported(void){ 1480 #ifdef ENABLE_BLE 1481 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1482 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1483 #else 1484 return false; 1485 #endif 1486 } 1487 1488 static bool hci_command_supported(uint8_t command_index){ 1489 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1490 } 1491 1492 #ifdef ENABLE_BLE 1493 1494 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1495 bool hci_le_extended_advertising_supported(void){ 1496 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1497 } 1498 #endif 1499 1500 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1501 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1502 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1503 } else { 1504 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1505 } 1506 } 1507 1508 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1509 *addr_type = hci_stack->le_own_addr_type; 1510 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1511 } 1512 1513 #ifdef ENABLE_LE_PERIPHERAL 1514 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1515 *addr_type = hci_stack->le_advertisements_own_addr_type; 1516 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1517 } 1518 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1519 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1520 if (advertising_handle == 0){ 1521 gap_le_get_own_advertisements_address(addr_type, addr); 1522 } else { 1523 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1524 if (advertising_set != NULL){ 1525 switch (advertising_set->extended_params.own_address_type){ 1526 case BD_ADDR_TYPE_LE_PUBLIC: 1527 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1528 memcpy(addr, hci_stack->local_bd_addr, 6); 1529 break; 1530 case BD_ADDR_TYPE_LE_RANDOM: 1531 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1532 memcpy(addr, advertising_set->random_address, 6); 1533 break; 1534 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1535 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1536 // do nothing as random address was already set from enhanced connection complete 1537 break; 1538 default: 1539 break; 1540 } 1541 } 1542 } 1543 } 1544 #endif 1545 #endif 1546 1547 #ifdef ENABLE_LE_CENTRAL 1548 1549 /** 1550 * @brief Get own addr type and address used for LE connections (Central) 1551 */ 1552 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1553 *addr_type = hci_stack->le_connection_own_addr_type; 1554 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1555 } 1556 1557 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1558 1559 uint16_t offset = 3; 1560 uint8_t num_reports = packet[offset]; 1561 offset += 1; 1562 1563 uint16_t i; 1564 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1565 for (i=0; (i<num_reports) && (offset < size);i++){ 1566 // sanity checks on data_length: 1567 uint8_t data_length = packet[offset + 8]; 1568 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1569 if ((offset + 9u + data_length + 1u) > size) return; 1570 // setup event 1571 uint8_t event_size = 10u + data_length; 1572 uint16_t pos = 0; 1573 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1574 event[pos++] = event_size; 1575 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1576 offset += 8; 1577 pos += 8; 1578 event[pos++] = packet[offset + 1 + data_length]; // rssi 1579 event[pos++] = data_length; 1580 offset++; 1581 (void)memcpy(&event[pos], &packet[offset], data_length); 1582 pos += data_length; 1583 offset += data_length + 1u; // rssi 1584 hci_emit_btstack_event(event, pos, 1); 1585 } 1586 } 1587 1588 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1589 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1590 uint16_t offset = 3; 1591 uint8_t num_reports = packet[offset++]; 1592 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1593 uint8_t i; 1594 for (i=0; (i<num_reports) && (offset < size);i++){ 1595 // sanity checks on data_length: 1596 uint16_t data_length = packet[offset + 23]; 1597 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1598 if ((offset + 24u + data_length) > size) return; 1599 uint16_t event_type = little_endian_read_16(packet, offset); 1600 offset += 2; 1601 if ((event_type & 0x10) != 0) { 1602 // setup legacy event 1603 uint8_t legacy_event_type; 1604 switch (event_type){ 1605 case 0x13: // 0b0010011 1606 // ADV_IND 1607 legacy_event_type = 0; 1608 break; 1609 case 0x15: // 0b0010101 1610 // ADV_DIRECT_IND 1611 legacy_event_type = 1; 1612 break; 1613 case 0x12: // 0b0010010 1614 // ADV_SCAN_IND 1615 legacy_event_type = 2; 1616 break; 1617 case 0x10: // 0b0010000: 1618 // ADV_NONCONN_IND 1619 legacy_event_type = 3; 1620 break; 1621 case 0x1B: // 0b0011011 1622 case 0x1A: // 0b0011010 1623 // SCAN_RSP 1624 legacy_event_type = 4; 1625 break; 1626 default: 1627 legacy_event_type = 0; 1628 break; 1629 } 1630 uint16_t pos = 0; 1631 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1632 event[pos++] = 10u + data_length; 1633 event[pos++] = legacy_event_type; 1634 // copy address type + address 1635 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1636 offset += 7; 1637 pos += 7; 1638 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1639 offset += 4; 1640 // copy rssi 1641 event[pos++] = packet[offset++]; 1642 // skip periodic advertising interval and direct address 1643 offset += 9; 1644 // copy data len + data; 1645 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1646 pos += 1 +data_length; 1647 offset += 1+ data_length; 1648 hci_emit_btstack_event(event, pos, 1); 1649 } else { 1650 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1651 uint8_t report_len = 24 + data_length; 1652 event[1] = report_len; 1653 little_endian_store_16(event, 2, event_type); 1654 memcpy(&event[4], &packet[offset], report_len); 1655 offset += report_len; 1656 hci_emit_btstack_event(event, 2 + report_len, 1); 1657 } 1658 } 1659 } 1660 #endif 1661 1662 #endif 1663 #endif 1664 1665 #ifdef ENABLE_BLE 1666 #ifdef ENABLE_LE_PERIPHERAL 1667 static void hci_update_advertisements_enabled_for_current_roles(void){ 1668 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1669 // get number of active le slave connections 1670 int num_slave_connections = 0; 1671 btstack_linked_list_iterator_t it; 1672 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1673 while (btstack_linked_list_iterator_has_next(&it)){ 1674 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1675 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1676 if (con->state != OPEN) continue; 1677 if (con->role != HCI_ROLE_SLAVE) continue; 1678 if (!hci_is_le_connection(con)) continue; 1679 num_slave_connections++; 1680 } 1681 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1682 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1683 } else { 1684 hci_stack->le_advertisements_enabled_for_current_roles = false; 1685 } 1686 } 1687 #endif 1688 #endif 1689 1690 #ifdef ENABLE_CLASSIC 1691 static void gap_run_set_local_name(void){ 1692 hci_reserve_packet_buffer(); 1693 uint8_t * packet = hci_stack->hci_packet_buffer; 1694 // construct HCI Command and send 1695 uint16_t opcode = hci_write_local_name.opcode; 1696 packet[0] = opcode & 0xff; 1697 packet[1] = opcode >> 8; 1698 packet[2] = DEVICE_NAME_LEN; 1699 memset(&packet[3], 0, DEVICE_NAME_LEN); 1700 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1701 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1702 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1703 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1704 // expand '00:00:00:00:00:00' in name with bd_addr 1705 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1706 hci_send_prepared_cmd_packet(); 1707 } 1708 1709 static void gap_run_set_eir_data(void){ 1710 hci_reserve_packet_buffer(); 1711 uint8_t * packet = hci_stack->hci_packet_buffer; 1712 // construct HCI Command in-place and send 1713 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1714 uint16_t offset = 0; 1715 packet[offset++] = opcode & 0xff; 1716 packet[offset++] = opcode >> 8; 1717 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1718 packet[offset++] = 0; // FEC not required 1719 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1720 if (hci_stack->eir_data){ 1721 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1722 ad_context_t context; 1723 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1724 uint8_t data_type = ad_iterator_get_data_type(&context); 1725 uint8_t size = ad_iterator_get_data_len(&context); 1726 const uint8_t *data = ad_iterator_get_data(&context); 1727 // copy item 1728 packet[offset++] = size + 1; 1729 packet[offset++] = data_type; 1730 memcpy(&packet[offset], data, size); 1731 // update name item 1732 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1733 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1734 } 1735 offset += size; 1736 } 1737 } else { 1738 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1739 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1740 packet[offset++] = bytes_to_copy + 1; 1741 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1742 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1743 // expand '00:00:00:00:00:00' in name with bd_addr 1744 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1745 } 1746 hci_send_prepared_cmd_packet(); 1747 } 1748 1749 static void hci_run_gap_tasks_classic(void){ 1750 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1751 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1752 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1753 return; 1754 } 1755 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1756 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1757 gap_run_set_local_name(); 1758 return; 1759 } 1760 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1761 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1762 gap_run_set_eir_data(); 1763 return; 1764 } 1765 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1766 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1767 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1768 return; 1769 } 1770 // write page scan activity 1771 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1772 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1773 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1774 return; 1775 } 1776 // write page scan type 1777 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1778 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1779 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1780 return; 1781 } 1782 // write page timeout 1783 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1784 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1785 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1786 return; 1787 } 1788 // send scan enable 1789 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1790 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1791 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1792 return; 1793 } 1794 // send write scan activity 1795 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1796 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1797 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1798 return; 1799 } 1800 // send write inquiry transmit power level 1801 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1802 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1803 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1804 return; 1805 } 1806 } 1807 #endif 1808 1809 #ifndef HAVE_HOST_CONTROLLER_API 1810 1811 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1812 if (!hci_stack->config) return 0; 1813 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1814 return baud_rate; 1815 } 1816 1817 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1818 UNUSED(ds); 1819 1820 switch (hci_stack->substate){ 1821 case HCI_INIT_W4_SEND_RESET: 1822 log_info("Resend HCI Reset"); 1823 hci_stack->substate = HCI_INIT_SEND_RESET; 1824 hci_stack->num_cmd_packets = 1; 1825 hci_run(); 1826 break; 1827 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1828 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1829 if (hci_stack->hci_transport->reset_link){ 1830 hci_stack->hci_transport->reset_link(); 1831 } 1832 1833 /* fall through */ 1834 1835 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1836 log_info("Resend HCI Reset - CSR Warm Boot"); 1837 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1838 hci_stack->num_cmd_packets = 1; 1839 hci_run(); 1840 break; 1841 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1842 if (hci_stack->hci_transport->set_baudrate){ 1843 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1844 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1845 hci_stack->hci_transport->set_baudrate(baud_rate); 1846 } 1847 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1848 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1849 if (hci_stack->hci_transport->reset_link){ 1850 log_info("Link Reset"); 1851 hci_stack->hci_transport->reset_link(); 1852 } 1853 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1854 hci_run(); 1855 } 1856 break; 1857 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1858 // otherwise continue 1859 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1860 hci_send_cmd(&hci_read_local_supported_commands); 1861 break; 1862 default: 1863 break; 1864 } 1865 } 1866 #endif 1867 1868 static void hci_initializing_next_state(void){ 1869 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1870 } 1871 1872 static void hci_init_done(void){ 1873 // done. tell the app 1874 log_info("hci_init_done -> HCI_STATE_WORKING"); 1875 hci_stack->state = HCI_STATE_WORKING; 1876 hci_emit_state(); 1877 } 1878 1879 // assumption: hci_can_send_command_packet_now() == true 1880 static void hci_initializing_run(void){ 1881 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1882 1883 if (!hci_can_send_command_packet_now()) return; 1884 1885 #ifndef HAVE_HOST_CONTROLLER_API 1886 bool need_baud_change = hci_stack->config 1887 && hci_stack->chipset 1888 && hci_stack->chipset->set_baudrate_command 1889 && hci_stack->hci_transport->set_baudrate 1890 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1891 #endif 1892 1893 switch (hci_stack->substate){ 1894 case HCI_INIT_SEND_RESET: 1895 hci_state_reset(); 1896 1897 #ifndef HAVE_HOST_CONTROLLER_API 1898 // prepare reset if command complete not received in 100ms 1899 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1900 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1901 btstack_run_loop_add_timer(&hci_stack->timeout); 1902 #endif 1903 // send command 1904 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1905 hci_send_cmd(&hci_reset); 1906 break; 1907 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1908 hci_send_cmd(&hci_read_local_version_information); 1909 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1910 break; 1911 1912 #ifndef HAVE_HOST_CONTROLLER_API 1913 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1914 hci_state_reset(); 1915 // prepare reset if command complete not received in 100ms 1916 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1917 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1918 btstack_run_loop_add_timer(&hci_stack->timeout); 1919 // send command 1920 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1921 hci_send_cmd(&hci_reset); 1922 break; 1923 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1924 hci_state_reset(); 1925 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1926 hci_send_cmd(&hci_reset); 1927 break; 1928 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1929 hci_reserve_packet_buffer(); 1930 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1931 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1932 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1933 hci_send_prepared_cmd_packet(); 1934 break; 1935 } 1936 case HCI_INIT_SET_BD_ADDR: 1937 hci_reserve_packet_buffer(); 1938 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1939 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1940 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1941 hci_send_prepared_cmd_packet(); 1942 break; 1943 case HCI_INIT_SEND_READ_LOCAL_NAME: 1944 #ifdef ENABLE_CLASSIC 1945 hci_send_cmd(&hci_read_local_name); 1946 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1947 break; 1948 #endif 1949 /* fall through */ 1950 1951 case HCI_INIT_SEND_BAUD_CHANGE: 1952 if (need_baud_change) { 1953 hci_reserve_packet_buffer(); 1954 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1955 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1956 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1957 hci_send_prepared_cmd_packet(); 1958 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1959 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1960 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1961 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1962 btstack_run_loop_add_timer(&hci_stack->timeout); 1963 } 1964 break; 1965 } 1966 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1967 1968 /* fall through */ 1969 1970 case HCI_INIT_CUSTOM_INIT: 1971 case HCI_INIT_CUSTOM_PRE_INIT: 1972 // Custom initialization 1973 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1974 hci_reserve_packet_buffer(); 1975 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1976 bool send_cmd = false; 1977 switch (hci_stack->chipset_result){ 1978 case BTSTACK_CHIPSET_VALID_COMMAND: 1979 send_cmd = true; 1980 switch (hci_stack->substate){ 1981 case HCI_INIT_CUSTOM_INIT: 1982 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1983 break; 1984 case HCI_INIT_CUSTOM_PRE_INIT: 1985 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1986 break; 1987 default: 1988 btstack_assert(false); 1989 break; 1990 } 1991 break; 1992 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1993 send_cmd = true; 1994 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1995 log_info("CSR Warm Boot"); 1996 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1997 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1998 btstack_run_loop_add_timer(&hci_stack->timeout); 1999 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2000 && hci_stack->config 2001 && hci_stack->chipset 2002 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2003 && hci_stack->hci_transport->set_baudrate 2004 && hci_transport_uart_get_main_baud_rate()){ 2005 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2006 } else { 2007 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2008 } 2009 break; 2010 default: 2011 break; 2012 } 2013 2014 if (send_cmd){ 2015 hci_send_prepared_cmd_packet(); 2016 break; 2017 } else { 2018 hci_release_packet_buffer(); 2019 } 2020 log_info("Init script done"); 2021 2022 // Custom Pre-Init complete, start regular init with HCI Reset 2023 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2024 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2025 hci_send_cmd(&hci_reset); 2026 break; 2027 } 2028 2029 // Init script download on Broadcom chipsets causes: 2030 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2031 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2032 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2033 2034 // - baud rate to reset, restore UART baud rate if needed 2035 if (need_baud_change) { 2036 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2037 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2038 hci_stack->hci_transport->set_baudrate(baud_rate); 2039 } 2040 2041 uint16_t bcm_delay_ms = 300; 2042 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2043 // -> Work around: wait here. 2044 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2045 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2046 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2047 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2048 btstack_run_loop_add_timer(&hci_stack->timeout); 2049 break; 2050 } 2051 } 2052 #endif 2053 /* fall through */ 2054 2055 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2056 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2057 hci_send_cmd(&hci_read_local_supported_commands); 2058 break; 2059 case HCI_INIT_READ_BD_ADDR: 2060 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2061 hci_send_cmd(&hci_read_bd_addr); 2062 break; 2063 case HCI_INIT_READ_BUFFER_SIZE: 2064 // only read buffer size if supported 2065 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2066 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2067 hci_send_cmd(&hci_read_buffer_size); 2068 break; 2069 } 2070 2071 /* fall through */ 2072 2073 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2074 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2075 hci_send_cmd(&hci_read_local_supported_features); 2076 break; 2077 2078 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2079 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2080 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2081 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2082 break; 2083 case HCI_INIT_HOST_BUFFER_SIZE: 2084 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2085 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2086 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2087 break; 2088 #endif 2089 2090 case HCI_INIT_SET_EVENT_MASK: 2091 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2092 if (hci_le_supported()){ 2093 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2094 } else { 2095 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2096 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2097 } 2098 break; 2099 2100 case HCI_INIT_SET_EVENT_MASK_2: 2101 // On Bluetooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2102 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2103 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2104 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2105 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2106 // Encryption Change Event v2 - bit 25 2107 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2108 break; 2109 } 2110 2111 #ifdef ENABLE_CLASSIC 2112 /* fall through */ 2113 2114 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2115 if (hci_classic_supported() && gap_ssp_supported()){ 2116 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2117 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2118 break; 2119 } 2120 2121 /* fall through */ 2122 2123 case HCI_INIT_WRITE_INQUIRY_MODE: 2124 if (hci_classic_supported()){ 2125 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2126 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2127 break; 2128 } 2129 2130 /* fall through */ 2131 2132 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2133 // skip write secure connections host support if not supported or disabled 2134 if (hci_classic_supported() && hci_stack->secure_connections_enable 2135 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2136 hci_stack->secure_connections_active = true; 2137 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2138 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2139 break; 2140 } 2141 2142 /* fall through */ 2143 2144 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2145 // skip set min encryption key size 2146 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2147 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2148 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2149 break; 2150 } 2151 2152 #ifdef ENABLE_SCO_OVER_HCI 2153 /* fall through */ 2154 2155 // only sent if ENABLE_SCO_OVER_HCI is defined 2156 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2157 // skip write synchronous flow control if not supported 2158 if (hci_classic_supported() 2159 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2160 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2161 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2162 break; 2163 } 2164 /* fall through */ 2165 2166 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2167 // skip write default erroneous data reporting if not supported 2168 if (hci_classic_supported() 2169 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2170 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2171 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2172 break; 2173 } 2174 #endif 2175 2176 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2177 /* fall through */ 2178 2179 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2180 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2181 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2182 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2183 #ifdef ENABLE_SCO_OVER_HCI 2184 log_info("BCM: Route SCO data via HCI transport"); 2185 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2186 #endif 2187 #ifdef ENABLE_SCO_OVER_PCM 2188 log_info("BCM: Route SCO data via PCM interface"); 2189 #ifdef ENABLE_BCM_PCM_WBS 2190 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2191 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2192 #else 2193 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2194 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2195 #endif 2196 #endif 2197 break; 2198 } 2199 #endif 2200 2201 #ifdef ENABLE_SCO_OVER_PCM 2202 /* fall through */ 2203 2204 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2205 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2206 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2207 log_info("BCM: Config PCM interface for I2S"); 2208 #ifdef ENABLE_BCM_PCM_WBS 2209 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2210 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2211 #else 2212 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2213 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2214 #endif 2215 break; 2216 } 2217 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2218 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2219 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2220 log_info("BCM: Config PCM Data format"); 2221 // msb first, fill bits 0, left justified 2222 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2223 break; 2224 } 2225 #ifdef HAVE_BCM_PCM2 2226 case HCI_INIT_BCM_PCM2_SETUP: 2227 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2228 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2229 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2230 uint32_t pcm_clock_freq; 2231 uint8_t ch_0_period; 2232 #ifdef ENABLE_BCM_PCM_WBS 2233 // 512 kHz, resample 8 kHz to 16 khz 2234 pcm_clock_freq = 512000; 2235 ch_0_period = 1; 2236 #else 2237 // 256 khz, 8 khz output 2238 pcm_clock_freq = 256000; 2239 ch_0_period = 0; 2240 #endif 2241 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2242 hci_send_cmd(&hci_bcm_pcm2_setup, 2243 0x00, // Action = Write 2244 0x00, // Test_Options = None 2245 op_mode, // Op_Mode 2246 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2247 pcm_clock_freq, // PCM_Clock_Freq 2248 0x01, // Sync_Signal_Width 2249 0x0F, // Slot_Width 2250 0x01, // NumberOfSlots 2251 0x00, // Bank_0_Fill_Mode = 0s 2252 0x00, // Bank_0_Number_of_Fill_Bits 2253 0x00, // Bank_0_Programmable_Fill_Data 2254 0x00, // Bank_1_Fill_Mode = 0s 2255 0x00, // Bank_1_Number_of_Fill_Bits 2256 0x00, // Bank_1_Programmable_Fill_Data 2257 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2258 0x00, // Ch_0_Slot_Number 2259 0x01, // Ch_1_Slot_Number 2260 0x02, // Ch_2_Slot_Number 2261 0x03, // Ch_3_Slot_Number 2262 0x04, // Ch_4_Slot_Number 2263 ch_0_period, // Ch_0_Period 2264 0x00, // Ch_1_Period 2265 0x00 // Ch_2_Period 2266 ); 2267 break; 2268 } 2269 #endif 2270 #endif /* ENABLE_SCO_OVER_PCM */ 2271 #endif /* ENABLE_CLASSIC */ 2272 2273 #ifdef ENABLE_BLE 2274 /* fall through */ 2275 2276 // LE INIT 2277 case HCI_INIT_LE_READ_BUFFER_SIZE: 2278 if (hci_le_supported()){ 2279 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2280 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2281 hci_send_cmd(&hci_le_read_buffer_size_v2); 2282 } else { 2283 hci_send_cmd(&hci_le_read_buffer_size); 2284 } 2285 break; 2286 } 2287 2288 /* fall through */ 2289 2290 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2291 // skip write le host if not supported (e.g. on LE only EM9301) 2292 if (hci_le_supported() 2293 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2294 // LE Supported Host = 1, Simultaneous Host = 0 2295 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2296 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2297 break; 2298 } 2299 2300 /* fall through */ 2301 2302 case HCI_INIT_LE_SET_EVENT_MASK: 2303 if (hci_le_supported()){ 2304 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2305 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2306 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2307 #else 2308 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2309 #endif 2310 break; 2311 } 2312 #endif 2313 2314 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2315 /* fall through */ 2316 2317 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2318 if (hci_le_supported() 2319 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2320 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2321 hci_send_cmd(&hci_le_read_maximum_data_length); 2322 break; 2323 } 2324 2325 /* fall through */ 2326 2327 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2328 if (hci_le_supported() 2329 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2330 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2331 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2332 break; 2333 } 2334 #endif 2335 2336 #ifdef ENABLE_LE_CENTRAL 2337 /* fall through */ 2338 2339 case HCI_INIT_READ_WHITE_LIST_SIZE: 2340 if (hci_le_supported()){ 2341 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2342 hci_send_cmd(&hci_le_read_white_list_size); 2343 break; 2344 } 2345 2346 #endif 2347 2348 #ifdef ENABLE_LE_PERIPHERAL 2349 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2350 /* fall through */ 2351 2352 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2353 if (hci_le_extended_advertising_supported()){ 2354 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2355 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2356 break; 2357 } 2358 #endif 2359 #endif 2360 2361 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2362 /* fall through */ 2363 2364 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2365 if (hci_le_supported()) { 2366 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2367 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2368 break; 2369 } 2370 #endif 2371 2372 /* fall through */ 2373 2374 case HCI_INIT_DONE: 2375 hci_stack->substate = HCI_INIT_DONE; 2376 // main init sequence complete 2377 #ifdef ENABLE_CLASSIC 2378 // check if initial Classic GAP Tasks are completed 2379 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2380 hci_run_gap_tasks_classic(); 2381 break; 2382 } 2383 #endif 2384 #ifdef ENABLE_BLE 2385 #ifdef ENABLE_LE_CENTRAL 2386 // check if initial LE GAP Tasks are completed 2387 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2388 hci_run_general_gap_le(); 2389 break; 2390 } 2391 #endif 2392 #endif 2393 hci_init_done(); 2394 break; 2395 2396 default: 2397 return; 2398 } 2399 } 2400 2401 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2402 bool command_completed = false; 2403 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2404 uint16_t opcode = little_endian_read_16(packet,3); 2405 if (opcode == hci_stack->last_cmd_opcode){ 2406 command_completed = true; 2407 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2408 } else { 2409 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2410 } 2411 } 2412 2413 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2414 uint8_t status = packet[2]; 2415 uint16_t opcode = little_endian_read_16(packet,4); 2416 if (opcode == hci_stack->last_cmd_opcode){ 2417 if (status){ 2418 command_completed = true; 2419 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2420 } else { 2421 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2422 } 2423 } else { 2424 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2425 } 2426 } 2427 #ifndef HAVE_HOST_CONTROLLER_API 2428 // Vendor == CSR 2429 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2430 // TODO: track actual command 2431 command_completed = true; 2432 } 2433 2434 // Vendor == Toshiba 2435 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2436 // TODO: track actual command 2437 command_completed = true; 2438 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2439 hci_stack->num_cmd_packets = 1; 2440 } 2441 #endif 2442 2443 return command_completed; 2444 } 2445 2446 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2447 2448 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2449 2450 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2451 2452 #ifndef HAVE_HOST_CONTROLLER_API 2453 2454 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2455 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2456 // 2457 // HCI Reset 2458 // Timeout 100 ms 2459 // HCI Reset 2460 // Command Complete Reset 2461 // HCI Read Local Version Information 2462 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2463 // hang... 2464 // 2465 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2466 if (!command_completed 2467 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2468 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2469 2470 uint16_t opcode = little_endian_read_16(packet,3); 2471 if (opcode == hci_reset.opcode){ 2472 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2473 return; 2474 } 2475 } 2476 2477 // CSR & H5 2478 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2479 if (!command_completed 2480 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2481 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2482 2483 uint16_t opcode = little_endian_read_16(packet,3); 2484 if (opcode == hci_reset.opcode){ 2485 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2486 return; 2487 } 2488 } 2489 2490 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2491 // fix: Correct substate and behave as command below 2492 if (command_completed){ 2493 switch (hci_stack->substate){ 2494 case HCI_INIT_SEND_RESET: 2495 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2496 break; 2497 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2498 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2499 break; 2500 default: 2501 break; 2502 } 2503 } 2504 2505 #endif 2506 2507 if (!command_completed) return; 2508 2509 bool need_baud_change = false; 2510 bool need_addr_change = false; 2511 2512 #ifndef HAVE_HOST_CONTROLLER_API 2513 need_baud_change = hci_stack->config 2514 && hci_stack->chipset 2515 && hci_stack->chipset->set_baudrate_command 2516 && hci_stack->hci_transport->set_baudrate 2517 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2518 2519 need_addr_change = hci_stack->custom_bd_addr_set 2520 && hci_stack->chipset 2521 && hci_stack->chipset->set_bd_addr_command; 2522 #endif 2523 2524 switch(hci_stack->substate){ 2525 2526 #ifndef HAVE_HOST_CONTROLLER_API 2527 case HCI_INIT_SEND_RESET: 2528 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2529 // fix: just correct substate and behave as command below 2530 2531 /* fall through */ 2532 #endif 2533 2534 case HCI_INIT_W4_SEND_RESET: 2535 btstack_run_loop_remove_timer(&hci_stack->timeout); 2536 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2537 return; 2538 2539 #ifndef HAVE_HOST_CONTROLLER_API 2540 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2541 // for STLC2500D, baud rate change already happened. 2542 // for others, baud rate gets changed now 2543 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2544 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2545 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2546 hci_stack->hci_transport->set_baudrate(baud_rate); 2547 } 2548 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2549 return; 2550 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2551 btstack_run_loop_remove_timer(&hci_stack->timeout); 2552 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2553 return; 2554 case HCI_INIT_W4_CUSTOM_INIT: 2555 // repeat custom init 2556 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2557 return; 2558 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2559 // repeat custom init 2560 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2561 return; 2562 #endif 2563 2564 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2565 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2566 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2567 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2568 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2569 return; 2570 } 2571 if (need_addr_change){ 2572 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2573 return; 2574 } 2575 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2576 return; 2577 #ifndef HAVE_HOST_CONTROLLER_API 2578 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2579 if (need_baud_change){ 2580 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2581 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2582 hci_stack->hci_transport->set_baudrate(baud_rate); 2583 } 2584 if (need_addr_change){ 2585 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2586 return; 2587 } 2588 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2589 return; 2590 case HCI_INIT_W4_SET_BD_ADDR: 2591 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2592 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2593 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2594 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2595 return; 2596 } 2597 // skipping st warm boot 2598 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2599 return; 2600 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2601 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2602 return; 2603 #endif 2604 2605 case HCI_INIT_DONE: 2606 // set state if we came here by fall through 2607 hci_stack->substate = HCI_INIT_DONE; 2608 return; 2609 2610 default: 2611 break; 2612 } 2613 hci_initializing_next_state(); 2614 } 2615 2616 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2617 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2618 // To prevent accidentally freeing the HCI connection for the ACL connection, 2619 // check if we have been aware of the HCI connection 2620 switch (conn->state){ 2621 case SENT_CREATE_CONNECTION: 2622 case RECEIVED_CONNECTION_REQUEST: 2623 case ACCEPTED_CONNECTION_REQUEST: 2624 break; 2625 default: 2626 return; 2627 } 2628 2629 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2630 bd_addr_t bd_address; 2631 (void)memcpy(&bd_address, conn->address, 6); 2632 2633 #ifdef ENABLE_CLASSIC 2634 // cache needed data 2635 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2636 #endif 2637 2638 // connection failed, remove entry 2639 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2640 btstack_memory_hci_connection_free( conn ); 2641 2642 #ifdef ENABLE_CLASSIC 2643 // notify client if dedicated bonding 2644 if (notify_dedicated_bonding_failed){ 2645 log_info("hci notify_dedicated_bonding_failed"); 2646 hci_emit_dedicated_bonding_result(bd_address, status); 2647 } 2648 2649 // if authentication error, also delete link key 2650 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2651 gap_drop_link_key_for_bd_addr(bd_address); 2652 } 2653 #else 2654 UNUSED(status); 2655 #endif 2656 } 2657 2658 #ifdef ENABLE_CLASSIC 2659 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2660 // SSP Controller 2661 if (features[6] & (1 << 3)){ 2662 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2663 } 2664 // eSCO 2665 if (features[3] & (1<<7)){ 2666 conn->remote_supported_features[0] |= 1; 2667 } 2668 // Extended features 2669 if (features[7] & (1<<7)){ 2670 conn->remote_supported_features[0] |= 2; 2671 } 2672 // SCO packet types 2673 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2674 } 2675 2676 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2677 // SSP Host 2678 if (features[0] & (1 << 0)){ 2679 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2680 } 2681 // SC Host 2682 if (features[0] & (1 << 3)){ 2683 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2684 } 2685 } 2686 2687 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2688 // SC Controller 2689 if (features[1] & (1 << 0)){ 2690 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2691 } 2692 } 2693 2694 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2695 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2696 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2697 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2698 if (conn->bonding_flags & BONDING_DEDICATED){ 2699 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2700 } 2701 } 2702 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2703 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2704 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2705 } 2706 2707 #endif 2708 2709 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2710 // handle BT initialization 2711 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2712 hci_initializing_event_handler(packet, size); 2713 } 2714 2715 // help with BT sleep 2716 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2717 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2718 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2719 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2720 hci_initializing_next_state(); 2721 } 2722 } 2723 2724 #ifdef ENABLE_CLASSIC 2725 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2726 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2727 conn->requested_security_level = LEVEL_0; 2728 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2729 hci_emit_security_level(conn->con_handle, security_level); 2730 2731 // dedicated bonding 2732 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2733 conn->bonding_flags &= ~BONDING_DEDICATED; 2734 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2735 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2736 // emit dedicated bonding complete, don't disconnect 2737 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2738 #else 2739 // request disconnect, event is emitted after disconnect 2740 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2741 #endif 2742 } 2743 } 2744 2745 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2746 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2747 conn->encryption_key_size = encryption_key_size; 2748 2749 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2750 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2751 hci_handle_mutual_authentication_completed(conn); 2752 } else { 2753 // otherwise trigger remote feature request and send authentication request 2754 hci_trigger_remote_features_for_connection(conn); 2755 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2756 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2757 } 2758 } 2759 } 2760 #endif 2761 2762 static void hci_store_local_supported_commands(const uint8_t * packet){ 2763 // create mapping table 2764 #define X(name, offset, bit) { offset, bit }, 2765 static struct { 2766 uint8_t byte_offset; 2767 uint8_t bit_position; 2768 } supported_hci_commands_map [] = { 2769 SUPPORTED_HCI_COMMANDS 2770 }; 2771 #undef X 2772 2773 // create names for debug purposes 2774 #ifdef ENABLE_LOG_DEBUG 2775 #define X(name, offset, bit) #name, 2776 static const char * command_names[] = { 2777 SUPPORTED_HCI_COMMANDS 2778 }; 2779 #undef X 2780 #endif 2781 2782 hci_stack->local_supported_commands = 0; 2783 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2784 uint16_t i; 2785 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2786 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2787 #ifdef ENABLE_LOG_DEBUG 2788 log_debug("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2789 #else 2790 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2791 #endif 2792 hci_stack->local_supported_commands |= (1LU << i); 2793 } 2794 } 2795 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2796 } 2797 2798 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2799 UNUSED(size); 2800 2801 uint8_t status = 0; 2802 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2803 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2804 } 2805 uint16_t manufacturer; 2806 #ifdef ENABLE_CLASSIC 2807 hci_connection_t * conn; 2808 #endif 2809 #if defined(ENABLE_CLASSIC) 2810 hci_con_handle_t handle; 2811 #endif 2812 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2813 le_audio_cig_t * cig; 2814 #endif 2815 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2816 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2817 #endif 2818 2819 // get num cmd packets - limit to 1 to reduce complexity 2820 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2821 2822 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2823 switch (opcode){ 2824 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2825 if (status) break; 2826 // terminate, name 248 chars 2827 packet[6+248] = 0; 2828 log_info("local name: %s", &packet[6]); 2829 break; 2830 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2831 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2832 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2833 uint16_t acl_len = little_endian_read_16(packet, 6); 2834 uint16_t sco_len = packet[8]; 2835 2836 // determine usable ACL/SCO payload size 2837 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2838 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2839 2840 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2841 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2842 2843 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2844 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2845 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2846 } 2847 break; 2848 case HCI_OPCODE_HCI_READ_RSSI: 2849 if (status == ERROR_CODE_SUCCESS){ 2850 uint8_t event[5]; 2851 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2852 event[1] = 3; 2853 (void)memcpy(&event[2], &packet[6], 3); 2854 hci_emit_btstack_event(event, sizeof(event), 1); 2855 } 2856 break; 2857 #ifdef ENABLE_BLE 2858 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2859 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2860 hci_stack->le_iso_packets_total_num = packet[11]; 2861 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2862 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2863 2864 /* fall through */ 2865 2866 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2867 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2868 hci_stack->le_acl_packets_total_num = packet[8]; 2869 // determine usable ACL payload size 2870 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2871 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2872 } 2873 log_info("hci_le_read_buffer_size: acl size %u, acl count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num); 2874 break; 2875 #endif 2876 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2877 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2878 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2879 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2880 log_info("hci_le_read_maximum_data_length: tx octets %u, tx time %u us", hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2881 break; 2882 #endif 2883 #ifdef ENABLE_LE_CENTRAL 2884 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2885 hci_stack->le_whitelist_capacity = packet[6]; 2886 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2887 break; 2888 #endif 2889 #ifdef ENABLE_LE_PERIPHERAL 2890 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2891 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2892 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2893 break; 2894 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2895 if (hci_stack->le_advertising_set_in_current_command != 0) { 2896 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2897 hci_stack->le_advertising_set_in_current_command = 0; 2898 if (advertising_set == NULL) break; 2899 uint8_t adv_status = packet[6]; 2900 uint8_t tx_power = packet[7]; 2901 uint8_t event[] = { HCI_EVENT_META_GAP, 4, GAP_SUBEVENT_ADVERTISING_SET_INSTALLED, hci_stack->le_advertising_set_in_current_command, adv_status, tx_power }; 2902 if (adv_status == 0){ 2903 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2904 } 2905 hci_emit_btstack_event(event, sizeof(event), 1); 2906 } 2907 break; 2908 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2909 if (hci_stack->le_advertising_set_in_current_command != 0) { 2910 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2911 hci_stack->le_advertising_set_in_current_command = 0; 2912 if (advertising_set == NULL) break; 2913 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2914 if (status == 0){ 2915 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2916 } 2917 hci_emit_btstack_event(event, sizeof(event), 1); 2918 } 2919 break; 2920 #endif 2921 #endif 2922 case HCI_OPCODE_HCI_READ_BD_ADDR: 2923 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2924 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2925 #ifdef ENABLE_CLASSIC 2926 if (hci_stack->link_key_db){ 2927 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2928 } 2929 #endif 2930 break; 2931 #ifdef ENABLE_CLASSIC 2932 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2933 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2934 break; 2935 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2936 if (status == ERROR_CODE_SUCCESS) { 2937 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2938 } else { 2939 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2940 } 2941 break; 2942 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2943 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2944 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2945 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2946 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2947 hci_emit_btstack_event(event, sizeof(event), 1); 2948 } 2949 break; 2950 #endif 2951 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2952 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2953 2954 #ifdef ENABLE_CLASSIC 2955 // determine usable ACL packet types based on host buffer size and supported features 2956 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2957 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2958 // determine usable SCO packet types based on supported features 2959 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2960 &hci_stack->local_supported_features[0]); 2961 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2962 #endif 2963 // Classic/LE 2964 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2965 break; 2966 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2967 manufacturer = little_endian_read_16(packet, 10); 2968 // map Cypress & Infineon to Broadcom 2969 switch (manufacturer){ 2970 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2971 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2972 log_info("Treat Cypress/Infineon as Broadcom"); 2973 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2974 little_endian_store_16(packet, 10, manufacturer); 2975 break; 2976 default: 2977 break; 2978 } 2979 hci_stack->manufacturer = manufacturer; 2980 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2981 break; 2982 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2983 hci_store_local_supported_commands(packet); 2984 break; 2985 #ifdef ENABLE_CLASSIC 2986 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2987 if (status) return; 2988 hci_stack->synchronous_flow_control_enabled = 1; 2989 break; 2990 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2991 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2992 conn = hci_connection_for_handle(handle); 2993 if (conn != NULL) { 2994 uint8_t key_size = 0; 2995 if (status == 0){ 2996 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2997 log_info("Handle %04x key Size: %u", handle, key_size); 2998 } else { 2999 key_size = 1; 3000 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3001 } 3002 hci_handle_read_encryption_key_size_complete(conn, key_size); 3003 } 3004 break; 3005 // assert pairing complete event is emitted. 3006 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3007 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3008 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3009 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3010 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3011 // lookup connection by gap pairing addr 3012 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3013 if (conn == NULL) break; 3014 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3015 break; 3016 3017 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3018 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3019 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3020 uint8_t event[67]; 3021 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3022 event[1] = 65; 3023 (void)memset(&event[2], 0, 65); 3024 if (status == ERROR_CODE_SUCCESS){ 3025 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3026 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3027 event[2] = 3; 3028 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3029 } else { 3030 event[2] = 1; 3031 } 3032 } 3033 hci_emit_btstack_event(event, sizeof(event), 0); 3034 break; 3035 } 3036 3037 // note: only needed if user does not provide OOB data 3038 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3039 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3040 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3041 if (conn == NULL) break; 3042 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3043 break; 3044 #endif 3045 #endif 3046 #ifdef ENABLE_BLE 3047 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3048 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3049 // lookup CIG 3050 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3051 if (cig != NULL){ 3052 uint8_t i = 0; 3053 if (status == ERROR_CODE_SUCCESS){ 3054 // assign CIS handles to pre-allocated CIS 3055 btstack_linked_list_iterator_t it; 3056 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3057 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3058 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3059 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3060 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3061 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3062 iso_stream->cis_handle = cis_handle; 3063 cig->cis_con_handles[i] = cis_handle; 3064 i++; 3065 } 3066 } 3067 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3068 hci_emit_cig_created(cig, status); 3069 } else { 3070 hci_emit_cig_created(cig, status); 3071 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3072 } 3073 } 3074 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3075 break; 3076 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3077 if (status != ERROR_CODE_SUCCESS){ 3078 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3079 } 3080 break; 3081 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3082 if (status != ERROR_CODE_SUCCESS){ 3083 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3084 } 3085 break; 3086 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3087 // lookup BIG by state 3088 btstack_linked_list_iterator_t it; 3089 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3090 while (btstack_linked_list_iterator_has_next(&it)) { 3091 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3092 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3093 if (status == ERROR_CODE_SUCCESS){ 3094 big->state_vars.next_bis++; 3095 if (big->state_vars.next_bis == big->num_bis){ 3096 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3097 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3098 } else { 3099 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3100 } 3101 } else { 3102 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3103 big->state_vars.status = status; 3104 } 3105 return; 3106 } 3107 } 3108 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3109 while (btstack_linked_list_iterator_has_next(&it)) { 3110 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3111 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3112 if (status == ERROR_CODE_SUCCESS){ 3113 big_sync->state_vars.next_bis++; 3114 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3115 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3116 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3117 } else { 3118 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3119 } 3120 } else { 3121 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3122 big_sync->state_vars.status = status; 3123 } 3124 return; 3125 } 3126 } 3127 // Lookup CIS via active group operation 3128 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3129 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3130 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3131 3132 // lookup CIS by state 3133 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3134 while (btstack_linked_list_iterator_has_next(&it)){ 3135 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3136 bool emit_cis_created = false; 3137 switch (iso_stream->state){ 3138 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3139 if (status != ERROR_CODE_SUCCESS){ 3140 emit_cis_created = true; 3141 break; 3142 } 3143 if (iso_stream->max_sdu_c_to_p > 0){ 3144 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3145 } else { 3146 emit_cis_created = true; 3147 } 3148 break; 3149 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3150 emit_cis_created = true; 3151 break; 3152 default: 3153 break; 3154 } 3155 if (emit_cis_created){ 3156 hci_cis_handle_created(iso_stream, status); 3157 } 3158 } 3159 } else { 3160 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3161 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3162 if (cig != NULL) { 3163 // emit cis created if all ISO Paths have been created 3164 // assume we are central 3165 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3166 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3167 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3168 // if outgoing has been setup, or incoming was setup but outgoing not required 3169 if ((cis_direction == 1) || (outgoing_needed == false)){ 3170 // lookup iso stream by cig/cis 3171 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3172 while (btstack_linked_list_iterator_has_next(&it)) { 3173 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3174 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3175 hci_cis_handle_created(iso_stream, status); 3176 } 3177 } 3178 } 3179 // next state 3180 cig->state_vars.next_cis++; 3181 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3182 } 3183 } 3184 } 3185 break; 3186 } 3187 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3188 // lookup BIG by state 3189 btstack_linked_list_iterator_t it; 3190 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3191 while (btstack_linked_list_iterator_has_next(&it)) { 3192 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3193 uint8_t big_handle = big_sync->big_handle; 3194 switch (big_sync->state){ 3195 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3196 btstack_linked_list_iterator_remove(&it); 3197 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3198 return; 3199 default: 3200 btstack_linked_list_iterator_remove(&it); 3201 hci_emit_big_sync_stopped(big_handle); 3202 return; 3203 } 3204 } 3205 break; 3206 } 3207 #endif 3208 #endif 3209 default: 3210 break; 3211 } 3212 } 3213 3214 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3215 static void 3216 hci_iso_create_big_failed(const le_audio_big_t *big, uint8_t status) { 3217 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 3218 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3219 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3220 hci_emit_big_created(big, status); 3221 } else { 3222 hci_emit_big_terminated(big); 3223 } 3224 } 3225 3226 static void hci_iso_big_sync_failed(const le_audio_big_sync_t *big_sync, uint8_t status) { 3227 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3228 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3229 hci_emit_big_sync_created(big_sync, status); 3230 } else { 3231 hci_emit_big_sync_stopped(big_sync->big_handle); 3232 } 3233 } 3234 #endif 3235 3236 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3237 UNUSED(size); 3238 3239 // get num cmd packets - limit to 1 to reduce complexity 3240 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3241 3242 // get opcode and command status 3243 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3244 3245 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3246 uint8_t status = hci_event_command_status_get_status(packet); 3247 #endif 3248 3249 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3250 bd_addr_type_t addr_type; 3251 bd_addr_t addr; 3252 #endif 3253 3254 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3255 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3256 #endif 3257 3258 switch (opcode){ 3259 #ifdef ENABLE_CLASSIC 3260 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3261 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3262 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3263 #endif 3264 #ifdef ENABLE_LE_CENTRAL 3265 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3266 #endif 3267 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3268 addr_type = hci_stack->outgoing_addr_type; 3269 memcpy(addr, hci_stack->outgoing_addr, 6); 3270 3271 // reset outgoing address info 3272 memset(hci_stack->outgoing_addr, 0, 6); 3273 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3274 3275 // on error 3276 if (status != ERROR_CODE_SUCCESS){ 3277 #ifdef ENABLE_LE_CENTRAL 3278 if (hci_is_le_connection_type(addr_type)){ 3279 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3280 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3281 } 3282 #endif 3283 // error => outgoing connection failed 3284 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3285 if (conn != NULL){ 3286 hci_handle_connection_failed(conn, status); 3287 } 3288 } 3289 break; 3290 #endif 3291 #ifdef ENABLE_CLASSIC 3292 case HCI_OPCODE_HCI_INQUIRY: 3293 if (status == ERROR_CODE_SUCCESS) { 3294 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3295 } else { 3296 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3297 } 3298 break; 3299 #endif 3300 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3301 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3302 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3303 if (status == ERROR_CODE_SUCCESS){ 3304 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3305 } else { 3306 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3307 } 3308 break; 3309 case HCI_OPCODE_HCI_LE_CREATE_BIG: 3310 if (status != ERROR_CODE_SUCCESS){ 3311 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3312 // get current big 3313 le_audio_big_t * big = hci_big_for_handle(hci_stack->iso_active_operation_group_id); 3314 if (big != NULL){ 3315 hci_iso_create_big_failed(big, status); 3316 } 3317 } 3318 break; 3319 case HCI_OPCODE_HCI_LE_BIG_CREATE_SYNC: 3320 if (status != ERROR_CODE_SUCCESS){ 3321 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3322 // get current big sync 3323 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(hci_stack->iso_active_operation_group_id); 3324 if (big_sync != NULL){ 3325 hci_iso_big_sync_failed(big_sync, status); 3326 } 3327 } 3328 break; 3329 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3330 default: 3331 break; 3332 } 3333 } 3334 3335 #ifdef ENABLE_BLE 3336 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3337 gap_event[0] = HCI_EVENT_META_GAP; 3338 gap_event[1] = 36 - 2; 3339 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3340 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3341 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3342 memcpy(&gap_event[3], &hci_event[3], 11); 3343 memset(&gap_event[14], 0, 12); 3344 memcpy(&gap_event[26], &hci_event[14], 7); 3345 memset(&gap_event[33], 0xff, 3); 3346 // Some Controllers incorrectly report a resolved identity address in HCI_SUBEVENT_LE_CONNECTION_COMPLETE. 3347 // If an address is resolved, we're working with it, but this event does not provide it. 3348 // As a workaround, we map identity addresses to regular addresses. 3349 gap_event[7] = gap_event[7] & 1; 3350 break; 3351 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3352 memcpy(&gap_event[3], &hci_event[3], 30); 3353 memset(&gap_event[33], 0xff, 3); 3354 break; 3355 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3356 memcpy(&gap_event[3], &hci_event[3], 33); 3357 break; 3358 default: 3359 btstack_unreachable(); 3360 break; 3361 } 3362 } 3363 3364 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3365 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3366 uint8_t gap_event[36]; 3367 hci_create_gap_connection_complete_event(hci_event, gap_event); 3368 3369 // read fields 3370 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3371 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3372 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3373 3374 // Connection management 3375 bd_addr_t addr; 3376 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3377 bd_addr_type_t addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3378 hci_con_handle_t con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3379 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3380 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3381 3382 #ifdef ENABLE_LE_CENTRAL 3383 // handle error: error is reported only to the initiator -> outgoing connection 3384 if (status){ 3385 3386 // handle cancelled outgoing connection 3387 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3388 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3389 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3390 bool connection_was_cancelled = false; 3391 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3392 connection_was_cancelled = true; 3393 // reset state 3394 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3395 // get outgoing connection conn struct for direct connect 3396 conn = gap_get_outgoing_le_connection(); 3397 // prepare restart if still active 3398 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3399 conn->state = SEND_CREATE_CONNECTION; 3400 } 3401 } 3402 3403 // free connection if cancelled by user (request == IDLE) 3404 bool cancelled_by_user = hci_stack->le_connecting_request == LE_CONNECTING_IDLE; 3405 if ((conn != NULL) && cancelled_by_user){ 3406 // remove entry 3407 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3408 btstack_memory_hci_connection_free( conn ); 3409 } 3410 3411 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for: 3412 // - outgoing error not caused by connection cancel 3413 // - connection cancelled by user 3414 // by this, no event is emitted for intermediate connection cancel required filterlist modification 3415 if ((connection_was_cancelled == false) || cancelled_by_user){ 3416 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3417 } 3418 return; 3419 } 3420 #endif 3421 3422 // on success, both hosts receive connection complete event 3423 if (role == HCI_ROLE_MASTER){ 3424 #ifdef ENABLE_LE_CENTRAL 3425 // if we're master, it was an outgoing connection 3426 // note: no hci_connection_t object exists yet for connect with whitelist 3427 3428 // if an identity addresses was used without enhanced connection complete event, 3429 // the connection complete event contains the current random address of the peer device. 3430 // This random address is needed in the case of a re-pairing 3431 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3432 conn = gap_get_outgoing_le_connection(); 3433 // if outgoing connection object is available, check if identity address was used. 3434 // if yes, track resolved random address and provide rpa 3435 // note: we don't update hci le subevent connection complete 3436 if (conn != NULL){ 3437 if (hci_is_le_identity_address_type(conn->address_type)){ 3438 memcpy(&gap_event[20], &gap_event[8], 6); 3439 gap_event[7] = conn->address_type; 3440 reverse_bd_addr(conn->address, &gap_event[8]); 3441 } 3442 } 3443 } 3444 3445 // we're done with it 3446 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3447 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3448 #endif 3449 } else { 3450 #ifdef ENABLE_LE_PERIPHERAL 3451 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3452 if (hci_le_extended_advertising_supported()) { 3453 // advertisement state managed with HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED 3454 3455 // if advertisement set terminated event arrives before connection complete, connection struct has been prepared 3456 // set missing peer address + address type 3457 conn = hci_connection_for_handle(con_handle); 3458 if (conn != NULL){ 3459 memcpy(conn->address, addr, 6); 3460 conn->address_type = addr_type; 3461 } 3462 } 3463 else 3464 #endif 3465 { 3466 // if we're slave, it was an incoming connection and advertisements have stopped 3467 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3468 } 3469 #endif 3470 } 3471 3472 // LE connections are auto-accepted, so just create a connection if there isn't one already 3473 if (!conn){ 3474 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3475 } 3476 3477 // no memory, sorry. 3478 if (!conn){ 3479 return; 3480 } 3481 3482 conn->state = OPEN; 3483 conn->con_handle = con_handle; 3484 conn->le_connection_interval = conn_interval; 3485 3486 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3487 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3488 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3489 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3490 } 3491 #endif 3492 3493 #ifdef ENABLE_LE_PERIPHERAL 3494 if (role == HCI_ROLE_SLAVE){ 3495 hci_update_advertisements_enabled_for_current_roles(); 3496 } 3497 #endif 3498 3499 // init unenhanced att bearer mtu 3500 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3501 conn->att_connection.mtu_exchanged = false; 3502 3503 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3504 3505 // restart timer 3506 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3507 // btstack_run_loop_add_timer(&conn->timeout); 3508 3509 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3510 3511 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3512 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3513 3514 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3515 hci_emit_nr_connections_changed(); 3516 } 3517 #endif 3518 3519 #ifdef ENABLE_CLASSIC 3520 static bool hci_ssp_security_level_possible_for_io_cap(gap_security_level_t level, uint8_t io_cap_local, uint8_t io_cap_remote){ 3521 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3522 // LEVEL_4 is tested by l2cap 3523 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3524 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3525 if (level >= LEVEL_3){ 3526 // MITM not possible without keyboard or display 3527 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3528 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3529 3530 // MITM possible if one side has keyboard and the other has keyboard or display 3531 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3532 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3533 3534 // MITM not possible if one side has only display and other side has no keyboard 3535 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3536 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3537 } 3538 // LEVEL 2 requires SSP, which is a given 3539 return true; 3540 } 3541 3542 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3543 // get requested security level 3544 gap_security_level_t requested_security_level = conn->requested_security_level; 3545 if (hci_stack->gap_secure_connections_only_mode){ 3546 requested_security_level = LEVEL_4; 3547 } 3548 3549 // assess security: LEVEL 4 requires SC 3550 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3551 if ((requested_security_level == LEVEL_4) && 3552 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3553 !hci_remote_sc_enabled(conn)){ 3554 log_info("Level 4 required, but SC not supported -> abort"); 3555 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3556 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3557 return; 3558 } 3559 3560 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3561 // - GAP/MOD/NBON/BV-02-C 3562 // - GAP/DM/NBON/BV-01-C 3563 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3564 switch (conn->io_cap_response_auth_req){ 3565 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3566 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3567 if (hci_stack->bondable == false){ 3568 log_info("Dedicated vs. non-bondable -> abort"); 3569 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3570 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3571 return; 3572 } 3573 default: 3574 break; 3575 } 3576 } 3577 3578 // assess security based on io capabilities 3579 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3580 // responder: fully validate io caps of both sides as well as OOB data 3581 bool security_possible = false; 3582 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3583 3584 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3585 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3586 // so we merge the OOB data availability 3587 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3588 if (conn->classic_oob_c_192 != NULL){ 3589 have_oob_data |= 1; 3590 } 3591 if (conn->classic_oob_c_256 != NULL){ 3592 have_oob_data |= 2; 3593 } 3594 // for up to Level 3, either P-192 as well as P-256 will do 3595 // if we don't support SC, then a) conn->classic_oob_c_256 will be NULL and b) remote should not report P-256 available 3596 // if remote does not SC, we should not receive P-256 data either 3597 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3598 security_possible = true; 3599 } 3600 // for Level 4, P-256 is needed 3601 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3602 security_possible = true; 3603 } 3604 #endif 3605 3606 if (security_possible == false){ 3607 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3608 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3609 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3610 return; 3611 } 3612 } else { 3613 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3614 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3615 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3616 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3617 log_info("Level 3+ required, but no input/output -> abort"); 3618 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3619 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3620 return; 3621 } 3622 #endif 3623 #endif 3624 } 3625 3626 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3627 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3628 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3629 } else { 3630 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3631 } 3632 #endif 3633 } 3634 3635 #endif 3636 3637 static void event_handler(uint8_t *packet, uint16_t size){ 3638 3639 uint16_t event_length = packet[1]; 3640 3641 // assert packet is complete 3642 if (size != (event_length + 2u)){ 3643 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3644 return; 3645 } 3646 3647 hci_con_handle_t handle; 3648 hci_connection_t * conn; 3649 int i; 3650 3651 #ifdef ENABLE_CLASSIC 3652 hci_link_type_t link_type; 3653 bd_addr_t addr; 3654 bd_addr_type_t addr_type; 3655 #endif 3656 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3657 hci_iso_stream_t * iso_stream; 3658 le_audio_big_t * big; 3659 le_audio_big_sync_t * big_sync; 3660 #endif 3661 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3662 btstack_linked_list_iterator_t it; 3663 #endif 3664 #if defined(ENABLE_LE_EXTENDED_ADVERTISING) && defined(ENABLE_LE_CENTRAL) 3665 uint8_t advertising_handle; 3666 #endif 3667 3668 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3669 3670 switch (hci_event_packet_get_type(packet)) { 3671 3672 case HCI_EVENT_COMMAND_COMPLETE: 3673 handle_command_complete_event(packet, size); 3674 break; 3675 3676 case HCI_EVENT_COMMAND_STATUS: 3677 handle_command_status_event(packet, size); 3678 break; 3679 3680 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3681 if (size < 3) return; 3682 uint16_t num_handles = packet[2]; 3683 if (size != (3u + num_handles * 4u)) return; 3684 #ifdef ENABLE_CLASSIC 3685 bool notify_sco = false; 3686 #endif 3687 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3688 bool notify_iso = false; 3689 #endif 3690 uint16_t offset = 3; 3691 for (i=0; i<num_handles;i++){ 3692 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3693 offset += 2u; 3694 uint16_t num_packets = little_endian_read_16(packet, offset); 3695 offset += 2u; 3696 3697 conn = hci_connection_for_handle(handle); 3698 if (conn != NULL) { 3699 3700 if (conn->num_packets_sent >= num_packets) { 3701 conn->num_packets_sent -= num_packets; 3702 } else { 3703 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3704 conn->num_packets_sent = 0; 3705 } 3706 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3707 #ifdef ENABLE_CLASSIC 3708 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3709 notify_sco = true; 3710 } 3711 #endif 3712 } 3713 3714 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3715 hci_controller_dump_packets(); 3716 #endif 3717 3718 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3719 if (conn == NULL){ 3720 iso_stream = hci_iso_stream_for_con_handle(handle); 3721 if (iso_stream != NULL){ 3722 if (iso_stream->num_packets_sent >= num_packets) { 3723 iso_stream->num_packets_sent -= num_packets; 3724 } else { 3725 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3726 iso_stream->num_packets_sent = 0; 3727 } 3728 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3729 big = hci_big_for_handle(iso_stream->group_id); 3730 if (big != NULL){ 3731 big->num_completed_timestamp_current_valid = true; 3732 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3733 } 3734 } 3735 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3736 num_packets, handle, iso_stream->num_packets_sent); 3737 notify_iso = true; 3738 } 3739 } 3740 #endif 3741 } 3742 3743 #ifdef ENABLE_CLASSIC 3744 if (notify_sco){ 3745 hci_notify_if_sco_can_send_now(); 3746 } 3747 #endif 3748 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3749 if (notify_iso){ 3750 hci_iso_notify_can_send_now(); 3751 } 3752 #endif 3753 break; 3754 } 3755 3756 #ifdef ENABLE_CLASSIC 3757 case HCI_EVENT_FLUSH_OCCURRED: 3758 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3759 handle = hci_event_flush_occurred_get_handle(packet); 3760 conn = hci_connection_for_handle(handle); 3761 if (conn) { 3762 log_info("Flush occurred, disconnect 0x%04x", handle); 3763 conn->state = SEND_DISCONNECT; 3764 } 3765 break; 3766 3767 case HCI_EVENT_INQUIRY_COMPLETE: 3768 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3769 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3770 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3771 hci_emit_btstack_event(event, sizeof(event), 1); 3772 } 3773 break; 3774 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3775 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3776 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3777 } 3778 break; 3779 case HCI_EVENT_CONNECTION_REQUEST: 3780 reverse_bd_addr(&packet[2], addr); 3781 link_type = (hci_link_type_t) packet[11]; 3782 3783 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3784 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3785 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3786 bd_addr_copy(hci_stack->decline_addr, addr); 3787 break; 3788 } 3789 3790 if (hci_stack->gap_classic_accept_callback != NULL){ 3791 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3792 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3793 bd_addr_copy(hci_stack->decline_addr, addr); 3794 break; 3795 } 3796 } 3797 3798 // TODO: eval COD 8-10 3799 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3800 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3801 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3802 if (!conn) { 3803 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3804 } 3805 if (!conn) { 3806 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3807 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3808 bd_addr_copy(hci_stack->decline_addr, addr); 3809 hci_run(); 3810 // avoid event to higher layer 3811 return; 3812 } 3813 conn->state = RECEIVED_CONNECTION_REQUEST; 3814 // store info about eSCO 3815 if (link_type == HCI_LINK_TYPE_ESCO){ 3816 conn->remote_supported_features[0] |= 1; 3817 } 3818 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3819 if (addr_type == BD_ADDR_TYPE_SCO){ 3820 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3821 // ACL exists unless fuzzing 3822 if (acl_conn != NULL) { 3823 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3824 } 3825 } 3826 hci_run(); 3827 break; 3828 3829 case HCI_EVENT_CONNECTION_COMPLETE: 3830 // Connection management 3831 reverse_bd_addr(&packet[5], addr); 3832 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3833 addr_type = BD_ADDR_TYPE_ACL; 3834 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3835 if (conn) { 3836 switch (conn->state){ 3837 // expected states 3838 case ACCEPTED_CONNECTION_REQUEST: 3839 case SENT_CREATE_CONNECTION: 3840 break; 3841 // unexpected state -> ignore 3842 default: 3843 // don't forward event to app 3844 return; 3845 } 3846 if (!packet[2]){ 3847 conn->state = OPEN; 3848 conn->con_handle = little_endian_read_16(packet, 3); 3849 3850 // trigger write supervision timeout if we're master 3851 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3852 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3853 } 3854 3855 // trigger write automatic flush timeout 3856 if (hci_stack->automatic_flush_timeout != 0){ 3857 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3858 } 3859 3860 // restart timer 3861 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3862 btstack_run_loop_add_timer(&conn->timeout); 3863 3864 // trigger remote features for dedicated bonding 3865 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3866 hci_trigger_remote_features_for_connection(conn); 3867 } 3868 3869 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3870 3871 hci_emit_nr_connections_changed(); 3872 } else { 3873 // connection failed 3874 hci_handle_connection_failed(conn, packet[2]); 3875 } 3876 } 3877 break; 3878 3879 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3880 reverse_bd_addr(&packet[5], addr); 3881 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3882 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3883 3884 // SCO exists unless fuzzer 3885 if (conn == NULL) break; 3886 3887 if (packet[2] != ERROR_CODE_SUCCESS){ 3888 // connection failed, remove entry 3889 hci_handle_connection_failed(conn, packet[2]); 3890 break; 3891 } 3892 3893 conn->state = OPEN; 3894 conn->con_handle = little_endian_read_16(packet, 3); 3895 3896 // update sco payload length for eSCO connections 3897 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3898 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3899 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3900 } 3901 3902 #ifdef ENABLE_SCO_OVER_HCI 3903 // update SCO 3904 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3905 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3906 } 3907 // trigger can send now 3908 if (hci_have_usb_transport()){ 3909 hci_stack->sco_can_send_now = true; 3910 } 3911 3912 // setup implicit sco flow control 3913 conn->sco_tx_ready = 0; 3914 conn->sco_tx_active = 0; 3915 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3916 3917 #endif 3918 #ifdef HAVE_SCO_TRANSPORT 3919 // configure sco transport 3920 if (hci_stack->sco_transport != NULL){ 3921 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3922 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3923 } 3924 #endif 3925 break; 3926 3927 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3928 handle = little_endian_read_16(packet, 3); 3929 conn = hci_connection_for_handle(handle); 3930 if (!conn) break; 3931 if (!packet[2]){ 3932 const uint8_t * features = &packet[5]; 3933 hci_handle_remote_features_page_0(conn, features); 3934 3935 // read extended features if possible 3936 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3937 && ((conn->remote_supported_features[0] & 2) != 0)) { 3938 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3939 break; 3940 } 3941 } 3942 hci_handle_remote_features_received(conn); 3943 break; 3944 3945 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3946 handle = little_endian_read_16(packet, 3); 3947 conn = hci_connection_for_handle(handle); 3948 if (!conn) break; 3949 // status = ok, page = 1 3950 if (!packet[2]) { 3951 uint8_t page_number = packet[5]; 3952 uint8_t maximum_page_number = packet[6]; 3953 const uint8_t * features = &packet[7]; 3954 bool done = false; 3955 switch (page_number){ 3956 case 1: 3957 hci_handle_remote_features_page_1(conn, features); 3958 if (maximum_page_number >= 2){ 3959 // get Secure Connections (Controller) from Page 2 if available 3960 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3961 } else { 3962 // otherwise, assume SC (Controller) == SC (Host) 3963 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3964 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3965 } 3966 done = true; 3967 } 3968 break; 3969 case 2: 3970 hci_handle_remote_features_page_2(conn, features); 3971 done = true; 3972 break; 3973 default: 3974 break; 3975 } 3976 if (!done) break; 3977 } 3978 hci_handle_remote_features_received(conn); 3979 break; 3980 3981 case HCI_EVENT_LINK_KEY_REQUEST: 3982 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3983 hci_event_link_key_request_get_bd_addr(packet, addr); 3984 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3985 if (!conn) break; 3986 3987 // lookup link key in db if not cached 3988 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3989 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3990 } 3991 3992 // response sent by hci_run() 3993 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3994 #endif 3995 break; 3996 3997 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3998 hci_event_link_key_request_get_bd_addr(packet, addr); 3999 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4000 if (!conn) break; 4001 4002 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 4003 4004 // CVE-2020-26555: ignore NULL link key 4005 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 4006 if (btstack_is_null(&packet[8], 16)) break; 4007 4008 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 4009 // Change Connection Encryption keeps link key type 4010 if (link_key_type != CHANGED_COMBINATION_KEY){ 4011 conn->link_key_type = link_key_type; 4012 } 4013 4014 // cache link key. link keys stored in little-endian format for legacy reasons 4015 memcpy(&conn->link_key, &packet[8], 16); 4016 4017 // only store link key: 4018 // - if bondable enabled 4019 if (hci_stack->bondable == false) break; 4020 // - if at least one side requests bonding during the IO Capabilities exchange. 4021 // Note: we drop bonding flag in acceptor role if remote doesn't request it 4022 bool bonding_local = conn->io_cap_request_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 4023 bool bonding_remote = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 4024 if ((bonding_local == false) && (bonding_remote == false)) break; 4025 // - if security level sufficient 4026 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 4027 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 4028 break; 4029 } 4030 4031 case HCI_EVENT_PIN_CODE_REQUEST: 4032 hci_event_pin_code_request_get_bd_addr(packet, addr); 4033 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4034 if (!conn) break; 4035 4036 hci_pairing_started(conn, false); 4037 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 4038 if (!hci_stack->bondable ){ 4039 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4040 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 4041 hci_run(); 4042 return; 4043 } 4044 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 4045 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 4046 log_info("Level 4 required, but SC not supported -> abort"); 4047 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4048 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4049 hci_run(); 4050 return; 4051 } 4052 break; 4053 4054 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 4055 hci_event_io_capability_response_get_bd_addr(packet, addr); 4056 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4057 if (!conn) break; 4058 4059 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 4060 hci_pairing_started(conn, true); 4061 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 4062 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 4063 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4064 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 4065 #endif 4066 break; 4067 4068 case HCI_EVENT_IO_CAPABILITY_REQUEST: 4069 hci_event_io_capability_response_get_bd_addr(packet, addr); 4070 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4071 if (!conn) break; 4072 4073 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4074 hci_connection_timestamp(conn); 4075 hci_pairing_started(conn, true); 4076 break; 4077 4078 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4079 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4080 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4081 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4082 if (!conn) break; 4083 4084 hci_connection_timestamp(conn); 4085 4086 hci_pairing_started(conn, true); 4087 4088 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4089 break; 4090 #endif 4091 4092 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4093 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4094 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4095 if (!conn) break; 4096 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4097 if (hci_stack->ssp_auto_accept){ 4098 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4099 }; 4100 } else { 4101 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4102 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4103 // don't forward event to app 4104 hci_run(); 4105 return; 4106 } 4107 break; 4108 4109 case HCI_EVENT_USER_PASSKEY_REQUEST: 4110 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4111 if (hci_stack->ssp_auto_accept){ 4112 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4113 }; 4114 break; 4115 4116 case HCI_EVENT_MODE_CHANGE: 4117 handle = hci_event_mode_change_get_handle(packet); 4118 conn = hci_connection_for_handle(handle); 4119 if (!conn) break; 4120 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4121 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4122 break; 4123 #endif 4124 4125 case HCI_EVENT_ENCRYPTION_CHANGE: 4126 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4127 handle = hci_event_encryption_change_get_connection_handle(packet); 4128 conn = hci_connection_for_handle(handle); 4129 if (!conn) break; 4130 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4131 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4132 if (encryption_enabled){ 4133 if (hci_is_le_connection(conn)){ 4134 // For LE, we accept connection as encrypted 4135 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4136 } 4137 #ifdef ENABLE_CLASSIC 4138 else { 4139 4140 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4141 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4142 bool connected_uses_aes_ccm = encryption_enabled == 2; 4143 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4144 #ifdef ENABLE_TESTING_SUPPORT 4145 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4146 // - GAP/SEC/SEM/BI-31-C 4147 // - GAP/SEC/SEM/BI-32-C 4148 // - GAP/SEC/SEM/BI-33-C 4149 4150 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4151 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4152 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4153 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4154 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4155 } 4156 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4157 conn->link_key_type, new_link_key_type); 4158 conn->link_key_type = new_link_key_type; 4159 #else 4160 log_info("SC during pairing, but only E0 now -> abort"); 4161 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4162 break; 4163 #endif 4164 } 4165 4166 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4167 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4168 if (connected_uses_aes_ccm){ 4169 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4170 } 4171 #else 4172 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4173 // with encryption key size > hci_stack->gap_required_encryption_key_size 4174 // for all operations that require any security. See BIAS attacks. 4175 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4176 #endif 4177 // validate encryption key size 4178 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4179 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4180 // already got encryption key size 4181 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4182 } else { 4183 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4184 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4185 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4186 } else { 4187 // if not, pretend everything is perfect 4188 hci_handle_read_encryption_key_size_complete(conn, 16); 4189 } 4190 } 4191 } 4192 #endif 4193 } else { 4194 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4195 } 4196 } else { 4197 #ifdef ENABLE_CLASSIC 4198 if (!hci_is_le_connection(conn)){ 4199 uint8_t status = hci_event_encryption_change_get_status(packet); 4200 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4201 conn->bonding_flags &= ~BONDING_DEDICATED; 4202 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4203 conn->bonding_status = status; 4204 } 4205 // trigger security update -> level 0 4206 hci_handle_mutual_authentication_completed(conn); 4207 } 4208 #endif 4209 } 4210 4211 break; 4212 4213 #ifdef ENABLE_CLASSIC 4214 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4215 handle = hci_event_authentication_complete_get_connection_handle(packet); 4216 conn = hci_connection_for_handle(handle); 4217 if (!conn) break; 4218 4219 // clear authentication active flag 4220 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4221 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4222 4223 // authenticated only if auth status == 0 4224 if (hci_event_authentication_complete_get_status(packet) == 0){ 4225 // authenticated 4226 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4227 4228 // If not already encrypted, start encryption 4229 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4230 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4231 break; 4232 } 4233 } 4234 4235 // emit updated security level (will be 0 if not authenticated) 4236 hci_handle_mutual_authentication_completed(conn); 4237 break; 4238 4239 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4240 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4241 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4242 if (!conn) break; 4243 4244 // treat successfully paired connection as authenticated 4245 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4246 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4247 } 4248 4249 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4250 break; 4251 #endif 4252 4253 // HCI_EVENT_DISCONNECTION_COMPLETE 4254 // has been split, to first notify stack before shutting connection down 4255 // see end of function, too. 4256 case HCI_EVENT_DISCONNECTION_COMPLETE: 4257 if (packet[2]) break; // status != 0 4258 handle = little_endian_read_16(packet, 3); 4259 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4260 if (hci_stack->acl_fragmentation_total_size > 0u) { 4261 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4262 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4263 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4264 hci_stack->acl_fragmentation_total_size = 0; 4265 hci_stack->acl_fragmentation_pos = 0; 4266 if (release_buffer){ 4267 hci_release_packet_buffer(); 4268 } 4269 } 4270 } 4271 4272 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4273 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4274 if (hci_stack->iso_fragmentation_total_size > 0u) { 4275 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4276 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4277 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4278 hci_stack->iso_fragmentation_total_size = 0; 4279 hci_stack->iso_fragmentation_pos = 0; 4280 if (release_buffer){ 4281 hci_release_packet_buffer(); 4282 } 4283 } 4284 } 4285 4286 // finalize iso stream for CIS handle 4287 iso_stream = hci_iso_stream_for_con_handle(handle); 4288 if (iso_stream != NULL){ 4289 hci_iso_stream_finalize(iso_stream); 4290 break; 4291 } 4292 #endif 4293 4294 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4295 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4296 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4297 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4298 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4299 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4300 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4301 hci_stack->num_cmd_packets = 1; 4302 } 4303 #endif 4304 4305 conn = hci_connection_for_handle(handle); 4306 if (!conn) break; 4307 #ifdef ENABLE_CLASSIC 4308 // pairing failed if it was ongoing 4309 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4310 #endif 4311 4312 // emit dedicated bonding event 4313 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4314 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4315 } 4316 4317 // mark connection for shutdown, stop timers, reset state 4318 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4319 hci_connection_stop_timer(conn); 4320 hci_connection_init(conn); 4321 4322 #ifdef ENABLE_BLE 4323 #ifdef ENABLE_LE_PERIPHERAL 4324 // re-enable advertisements for le connections if active 4325 if (hci_is_le_connection(conn)){ 4326 hci_update_advertisements_enabled_for_current_roles(); 4327 } 4328 #endif 4329 #endif 4330 break; 4331 4332 case HCI_EVENT_HARDWARE_ERROR: 4333 log_error("Hardware Error: 0x%02x", packet[2]); 4334 if (hci_stack->hardware_error_callback){ 4335 (*hci_stack->hardware_error_callback)(packet[2]); 4336 } else { 4337 // if no special requests, just reboot stack 4338 hci_power_control_off(); 4339 hci_power_control_on(); 4340 } 4341 break; 4342 4343 #ifdef ENABLE_CLASSIC 4344 case HCI_EVENT_ROLE_CHANGE: 4345 if (packet[2]) break; // status != 0 4346 reverse_bd_addr(&packet[3], addr); 4347 addr_type = BD_ADDR_TYPE_ACL; 4348 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4349 if (!conn) break; 4350 conn->role = (hci_role_t) packet[9]; 4351 break; 4352 #endif 4353 4354 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4355 // release packet buffer only for asynchronous transport and if there are not further fragments 4356 if (hci_transport_synchronous()) { 4357 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4358 return; // instead of break: to avoid re-entering hci_run() 4359 } 4360 hci_stack->acl_fragmentation_tx_active = 0; 4361 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4362 hci_stack->iso_fragmentation_tx_active = 0; 4363 if (hci_stack->iso_fragmentation_total_size) break; 4364 #endif 4365 if (hci_stack->acl_fragmentation_total_size) break; 4366 4367 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4368 hci_stack->hci_packet_buffer_reserved = false; 4369 4370 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4371 hci_iso_notify_can_send_now(); 4372 #endif 4373 // L2CAP receives this event via the hci_emit_event below 4374 4375 #ifdef ENABLE_CLASSIC 4376 // For SCO, we do the can_send_now_check here 4377 hci_notify_if_sco_can_send_now(); 4378 #endif 4379 break; 4380 4381 #ifdef ENABLE_CLASSIC 4382 case HCI_EVENT_SCO_CAN_SEND_NOW: 4383 // For SCO, we do the can_send_now_check here 4384 hci_stack->sco_can_send_now = true; 4385 hci_notify_if_sco_can_send_now(); 4386 return; 4387 4388 // explode inquiry results for easier consumption 4389 case HCI_EVENT_INQUIRY_RESULT: 4390 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4391 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4392 gap_inquiry_explode(packet, size); 4393 break; 4394 #endif 4395 4396 #ifdef ENABLE_BLE 4397 case HCI_EVENT_LE_META: 4398 switch (packet[2]){ 4399 #ifdef ENABLE_LE_CENTRAL 4400 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4401 if (!hci_stack->le_scanning_enabled) break; 4402 le_handle_advertisement_report(packet, size); 4403 break; 4404 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4405 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4406 if (!hci_stack->le_scanning_enabled) break; 4407 le_handle_extended_advertisement_report(packet, size); 4408 break; 4409 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4410 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4411 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4412 break; 4413 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4414 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4415 if (advertising_handle == LE_EXTENDED_ADVERTISING_LEGACY_HANDLE){ 4416 // legacy advertisements 4417 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4418 hci_update_advertisements_enabled_for_current_roles(); 4419 } else { 4420 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4421 while (btstack_linked_list_iterator_has_next(&it)) { 4422 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4423 if (advertising_set->advertising_handle == advertising_handle){ 4424 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4425 } 4426 } 4427 } 4428 // event may come before le connection complete and announces new connection 4429 if (hci_subevent_le_advertising_set_terminated_get_status(packet) == ERROR_CODE_SUCCESS){ 4430 handle = hci_subevent_le_advertising_set_terminated_get_connection_handle(packet); 4431 conn = hci_connection_for_handle(handle); 4432 if (conn == NULL){ 4433 // use placeholder address for peer, will be overwritten in hci_handle_le_connection_complete_event() 4434 bd_addr_t addr; 4435 memset(addr, 0, 6); 4436 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_UNKNOWN, HCI_ROLE_SLAVE); 4437 if (conn != NULL){ 4438 conn->state = ANNOUNCED; 4439 conn->con_handle = handle; 4440 } 4441 } 4442 } 4443 break; 4444 #endif 4445 #endif 4446 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4447 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4448 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4449 hci_handle_le_connection_complete_event(packet); 4450 break; 4451 4452 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4453 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4454 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4455 conn = hci_connection_for_handle(handle); 4456 if (!conn) break; 4457 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4458 break; 4459 4460 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4461 // connection 4462 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4463 conn = hci_connection_for_handle(handle); 4464 if (conn) { 4465 // read arguments 4466 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4467 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4468 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4469 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4470 4471 // validate against current connection parameter range 4472 le_connection_parameter_range_t existing_range; 4473 gap_get_connection_parameter_range(&existing_range); 4474 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4475 if (update_parameter){ 4476 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4477 conn->le_conn_interval_min = le_conn_interval_min; 4478 conn->le_conn_interval_max = le_conn_interval_max; 4479 conn->le_conn_latency = le_conn_latency; 4480 conn->le_supervision_timeout = le_supervision_timeout; 4481 } else { 4482 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4483 } 4484 } 4485 break; 4486 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4487 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4488 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4489 conn = hci_connection_for_handle(handle); 4490 if (conn) { 4491 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4492 } 4493 break; 4494 #endif 4495 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4496 case HCI_SUBEVENT_LE_CIS_REQUEST: 4497 // incoming CIS request, allocate iso stream object and cache metadata 4498 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4499 hci_subevent_le_cis_request_get_cig_id(packet), 4500 hci_subevent_le_cis_request_get_cis_id(packet)); 4501 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4502 if (iso_stream != NULL){ 4503 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4504 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4505 } 4506 break; 4507 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4508 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4509 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4510 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4511 iso_stream = hci_iso_stream_for_con_handle(handle); 4512 btstack_assert(iso_stream != NULL); 4513 // track connection info 4514 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4515 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4516 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4517 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4518 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4519 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4520 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4521 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4522 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4523 // CIS Accept by Peripheral 4524 if (status == ERROR_CODE_SUCCESS){ 4525 if (iso_stream->max_sdu_p_to_c > 0){ 4526 // we're peripheral and we will send data 4527 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4528 } else { 4529 // we're peripheral and we will only receive data 4530 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4531 } 4532 } else { 4533 hci_cis_handle_created(iso_stream, status); 4534 } 4535 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4536 } else { 4537 // CIG Setup by Central 4538 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4539 btstack_assert(cig != NULL); 4540 // update iso stream state 4541 if (status == ERROR_CODE_SUCCESS){ 4542 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4543 } else { 4544 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4545 } 4546 // update cig state 4547 for (i=0;i<cig->num_cis;i++){ 4548 if (cig->cis_con_handles[i] == handle){ 4549 cig->cis_setup_active[i] = false; 4550 if (status == ERROR_CODE_SUCCESS){ 4551 cig->cis_established[i] = true; 4552 } else { 4553 hci_cis_handle_created(iso_stream, status); 4554 } 4555 } 4556 } 4557 4558 // trigger iso path setup if complete 4559 bool cis_setup_active = false; 4560 for (i=0;i<cig->num_cis;i++){ 4561 cis_setup_active |= cig->cis_setup_active[i]; 4562 } 4563 if (cis_setup_active == false){ 4564 cig->state_vars.next_cis = 0; 4565 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4566 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4567 } 4568 } 4569 } 4570 break; 4571 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4572 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4573 big = hci_big_for_handle(packet[4]); 4574 if (big != NULL){ 4575 uint8_t status = packet[3]; 4576 if (status == ERROR_CODE_SUCCESS){ 4577 // store bis_con_handles and trigger iso path setup 4578 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4579 4580 for (i=0;i<num_bis;i++){ 4581 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4582 big->bis_con_handles[i] = bis_handle; 4583 // assign bis handle 4584 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4585 while (btstack_linked_list_iterator_has_next(&it)){ 4586 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4587 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4588 (iso_stream->group_id == big->big_handle)){ 4589 iso_stream->cis_handle = bis_handle; 4590 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4591 break; 4592 } 4593 } 4594 } 4595 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4596 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4597 big->state_vars.next_bis = 0; 4598 } 4599 } else { 4600 // create BIG failed or has been stopped by us 4601 hci_iso_create_big_failed(big, status); 4602 } 4603 } 4604 break; 4605 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4606 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4607 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4608 if (big != NULL){ 4609 // finalize associated ISO streams 4610 4611 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4612 while (btstack_linked_list_iterator_has_next(&it)){ 4613 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4614 if (iso_stream->group_id == big->big_handle){ 4615 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4616 btstack_linked_list_iterator_remove(&it); 4617 btstack_memory_hci_iso_stream_free(iso_stream); 4618 } 4619 } 4620 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4621 switch (big->state){ 4622 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4623 hci_emit_big_created(big, big->state_vars.status); 4624 break; 4625 default: 4626 hci_emit_big_terminated(big); 4627 break; 4628 } 4629 } 4630 break; 4631 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4632 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4633 big_sync = hci_big_sync_for_handle(packet[4]); 4634 if (big_sync != NULL){ 4635 uint8_t status = packet[3]; 4636 if (status == ERROR_CODE_SUCCESS){ 4637 // store bis_con_handles and trigger iso path setup 4638 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4639 for (i=0;i<num_bis;i++){ 4640 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4641 big_sync->bis_con_handles[i] = bis_handle; 4642 // setup iso_stream_t 4643 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4644 while (btstack_linked_list_iterator_has_next(&it)){ 4645 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4646 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4647 (iso_stream->group_id == big_sync->big_handle)){ 4648 iso_stream->cis_handle = bis_handle; 4649 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4650 break; 4651 } 4652 } 4653 } 4654 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4655 // trigger iso path setup 4656 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4657 big_sync->state_vars.next_bis = 0; 4658 } 4659 } else { 4660 // create BIG Sync failed or has been stopped by us 4661 hci_iso_big_sync_failed(big_sync, status); 4662 } 4663 } 4664 break; 4665 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4666 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4667 big_sync = hci_big_sync_for_handle(packet[4]); 4668 if (big_sync != NULL){ 4669 uint8_t big_handle = packet[4]; 4670 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4671 hci_emit_big_sync_stopped(big_handle); 4672 } 4673 break; 4674 #endif 4675 default: 4676 break; 4677 } 4678 break; 4679 #endif 4680 case HCI_EVENT_VENDOR_SPECIFIC: 4681 // Vendor specific commands often create vendor specific event instead of num completed packets 4682 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4683 switch (hci_stack->manufacturer){ 4684 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4685 hci_stack->num_cmd_packets = 1; 4686 break; 4687 default: 4688 break; 4689 } 4690 break; 4691 default: 4692 break; 4693 } 4694 4695 handle_event_for_current_stack_state(packet, size); 4696 4697 // notify upper stack 4698 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4699 4700 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4701 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4702 handle = little_endian_read_16(packet, 3); 4703 hci_connection_t * aConn = hci_connection_for_handle(handle); 4704 // discard connection if app did not trigger a reconnect in the event handler 4705 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4706 hci_shutdown_connection(aConn); 4707 } 4708 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4709 hci_controller_dump_packets(); 4710 #endif 4711 } 4712 4713 // execute main loop 4714 hci_run(); 4715 } 4716 4717 #ifdef ENABLE_CLASSIC 4718 4719 static void sco_handler(uint8_t * packet, uint16_t size){ 4720 // lookup connection struct 4721 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4722 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4723 if (!conn) return; 4724 4725 #ifdef ENABLE_SCO_OVER_HCI 4726 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4727 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4728 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4729 packet[2] = 0x3c; 4730 memmove(&packet[3], &packet[23], 63); 4731 size = 63; 4732 } 4733 } 4734 4735 if (hci_have_usb_transport()){ 4736 // Nothing to do 4737 } else { 4738 // 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); 4739 if (hci_stack->synchronous_flow_control_enabled == 0){ 4740 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4741 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4742 if (conn->sco_tx_active == 0){ 4743 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4744 conn->sco_tx_active = 1; 4745 conn->sco_tx_ready = max_sco_packets; 4746 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4747 hci_notify_if_sco_can_send_now(); 4748 } 4749 } else { 4750 if (conn->sco_tx_ready < max_sco_packets){ 4751 conn->sco_tx_ready++; 4752 } 4753 hci_notify_if_sco_can_send_now(); 4754 } 4755 } 4756 } 4757 #endif 4758 4759 // deliver to app 4760 if (hci_stack->sco_packet_handler) { 4761 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4762 } 4763 4764 #ifdef HAVE_SCO_TRANSPORT 4765 // We can send one packet for each received packet 4766 conn->sco_tx_ready++; 4767 hci_notify_if_sco_can_send_now(); 4768 #endif 4769 4770 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4771 conn->num_packets_completed++; 4772 hci_stack->host_completed_packets = 1; 4773 hci_run(); 4774 #endif 4775 } 4776 #endif 4777 4778 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4779 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4780 // propagate ISO packets received as ACL 4781 hci_iso_stream_t * iso_stream = NULL; 4782 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4783 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4784 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4785 if (iso_stream != NULL){ 4786 packet_type = HCI_ISO_DATA_PACKET; 4787 } 4788 } 4789 #endif 4790 4791 // don't log internal events unless requested 4792 bool internal_event = (packet_type == HCI_EVENT_PACKET) && (hci_event_packet_get_type(packet) >= BTSTACK_EVENT_FIRST); 4793 bool log_packet = internal_event == false; 4794 #ifdef ENABLE_LOG_BTSTACK_EVENTS 4795 log_packet = true; 4796 #endif 4797 if (log_packet){ 4798 hci_dump_packet(packet_type, 1, packet, size); 4799 } 4800 4801 switch (packet_type) { 4802 case HCI_EVENT_PACKET: 4803 event_handler(packet, size); 4804 break; 4805 case HCI_ACL_DATA_PACKET: 4806 acl_handler(packet, size); 4807 break; 4808 #ifdef ENABLE_CLASSIC 4809 case HCI_SCO_DATA_PACKET: 4810 sco_handler(packet, size); 4811 break; 4812 #endif 4813 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4814 case HCI_ISO_DATA_PACKET: 4815 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4816 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4817 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4818 } 4819 hci_iso_packet_handler(iso_stream, packet, size); 4820 break; 4821 #endif 4822 default: 4823 break; 4824 } 4825 } 4826 4827 /** 4828 * @brief Add event packet handler. 4829 */ 4830 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4831 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4832 } 4833 4834 /** 4835 * @brief Remove event packet handler. 4836 */ 4837 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4838 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4839 } 4840 4841 /** Register HCI packet handlers */ 4842 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4843 hci_stack->acl_packet_handler = handler; 4844 } 4845 4846 #ifdef ENABLE_CLASSIC 4847 /** 4848 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4849 */ 4850 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4851 hci_stack->sco_packet_handler = handler; 4852 } 4853 #endif 4854 4855 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4856 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4857 hci_stack->iso_packet_handler = handler; 4858 } 4859 #endif 4860 4861 static void hci_state_reset(void){ 4862 // no connections yet 4863 hci_stack->connections = NULL; 4864 4865 // keep discoverable/connectable as this has been requested by the client(s) 4866 // hci_stack->discoverable = 0; 4867 // hci_stack->connectable = 0; 4868 // hci_stack->bondable = 1; 4869 // hci_stack->own_addr_type = 0; 4870 4871 // buffer is free 4872 hci_stack->hci_packet_buffer_reserved = false; 4873 4874 // no pending cmds 4875 hci_stack->decline_reason = 0; 4876 4877 hci_stack->secure_connections_active = false; 4878 4879 #ifdef ENABLE_CLASSIC 4880 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4881 4882 hci_stack->gap_tasks_classic = 4883 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4884 GAP_TASK_SET_CLASS_OF_DEVICE | 4885 GAP_TASK_SET_LOCAL_NAME | 4886 GAP_TASK_SET_EIR_DATA | 4887 GAP_TASK_WRITE_SCAN_ENABLE | 4888 GAP_TASK_WRITE_PAGE_TIMEOUT; 4889 #endif 4890 4891 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4892 hci_stack->classic_read_local_oob_data = false; 4893 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4894 #endif 4895 4896 // LE 4897 #ifdef ENABLE_BLE 4898 memset(hci_stack->le_random_address, 0, 6); 4899 hci_stack->le_random_address_set = 0; 4900 #endif 4901 #ifdef ENABLE_LE_CENTRAL 4902 hci_stack->le_scanning_active = false; 4903 hci_stack->le_scanning_param_update = true; 4904 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4905 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4906 hci_stack->le_whitelist_capacity = 0; 4907 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4908 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4909 #endif 4910 #endif 4911 #ifdef ENABLE_LE_PERIPHERAL 4912 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4913 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4914 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4915 } 4916 if (hci_stack->le_advertisements_data != NULL){ 4917 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4918 } 4919 #endif 4920 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4921 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4922 #endif 4923 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4924 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4925 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4926 #endif 4927 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4928 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4929 #endif 4930 } 4931 4932 #ifdef ENABLE_CLASSIC 4933 /** 4934 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4935 */ 4936 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4937 // store and open remote device db 4938 hci_stack->link_key_db = link_key_db; 4939 if (hci_stack->link_key_db) { 4940 hci_stack->link_key_db->open(); 4941 } 4942 } 4943 #endif 4944 4945 void hci_init(const hci_transport_t *transport, const void *config){ 4946 4947 #ifdef HAVE_MALLOC 4948 if (!hci_stack) { 4949 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4950 } 4951 btstack_assert(hci_stack != NULL); 4952 #else 4953 hci_stack = &hci_stack_static; 4954 #endif 4955 memset(hci_stack, 0, sizeof(hci_stack_t)); 4956 4957 // reference to use transport layer implementation 4958 hci_stack->hci_transport = transport; 4959 4960 // reference to used config 4961 hci_stack->config = config; 4962 4963 // setup pointer for outgoing packet buffer 4964 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4965 4966 // max acl payload size defined in config.h 4967 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4968 4969 // register packet handlers with transport 4970 transport->register_packet_handler(&packet_handler); 4971 4972 hci_stack->state = HCI_STATE_OFF; 4973 4974 // class of device 4975 hci_stack->class_of_device = 0x007a020c; // Smartphone 4976 4977 // bondable by default 4978 hci_stack->bondable = 1; 4979 4980 #ifdef ENABLE_CLASSIC 4981 // classic name 4982 hci_stack->local_name = default_classic_name; 4983 4984 // Master slave policy 4985 hci_stack->master_slave_policy = 1; 4986 4987 // Allow Role Switch 4988 hci_stack->allow_role_switch = 1; 4989 4990 // Default / minimum security level = 2 4991 hci_stack->gap_security_level = LEVEL_2; 4992 4993 // Default Security Mode 4 4994 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4995 4996 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4997 hci_stack->gap_required_encyrption_key_size = 7; 4998 4999 // Link Supervision Timeout 5000 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 5001 5002 // Page Timeout 5003 hci_stack->page_timeout = 0x6000; // ca. 15 sec 5004 5005 // All ACL packet types are enabled 5006 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 5007 #endif 5008 5009 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 5010 hci_stack->ssp_enable = 1; 5011 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 5012 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5013 hci_stack->ssp_auto_accept = 1; 5014 5015 // Secure Connections: enable (requires support from Controller) 5016 hci_stack->secure_connections_enable = true; 5017 5018 // voice setting - signed 16 bit pcm data with CVSD over the air 5019 hci_stack->sco_voice_setting = 0x60; 5020 5021 #ifdef ENABLE_BLE 5022 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 5023 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 5024 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 5025 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 5026 hci_stack->le_connection_latency = 4; // 4 5027 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 5028 hci_stack->le_minimum_ce_length = 0; // 0 ms 5029 hci_stack->le_maximum_ce_length = 0; // 0 ms 5030 #endif 5031 5032 #ifdef ENABLE_LE_CENTRAL 5033 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 5034 5035 // default LE Scanning 5036 hci_stack->le_scan_type = 0x01; // active 5037 hci_stack->le_scan_interval = 0x1e0; // 300 ms 5038 hci_stack->le_scan_window = 0x30; // 30 ms 5039 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 5040 #endif 5041 5042 #ifdef ENABLE_LE_PERIPHERAL 5043 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 5044 5045 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 5046 hci_stack->le_advertisements_interval_min = 0x0800; 5047 hci_stack->le_advertisements_interval_max = 0x0800; 5048 hci_stack->le_advertisements_type = 0; 5049 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 5050 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 5051 hci_stack->le_advertisements_channel_map = 0x07; 5052 hci_stack->le_advertisements_filter_policy = 0; 5053 #endif 5054 5055 // connection parameter range used to answer connection parameter update requests in l2cap 5056 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 5057 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 5058 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 5059 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 5060 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 5061 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 5062 5063 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5064 hci_stack->iso_packets_to_queue = 1; 5065 #endif 5066 5067 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5068 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5069 #endif 5070 5071 hci_state_reset(); 5072 } 5073 5074 void hci_deinit(void){ 5075 btstack_run_loop_remove_timer(&hci_stack->timeout); 5076 #ifdef HAVE_MALLOC 5077 if (hci_stack) { 5078 free(hci_stack); 5079 } 5080 #endif 5081 hci_stack = NULL; 5082 5083 #ifdef ENABLE_CLASSIC 5084 disable_l2cap_timeouts = 0; 5085 #endif 5086 } 5087 5088 /** 5089 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5090 */ 5091 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5092 hci_stack->chipset = chipset_driver; 5093 5094 // reset chipset driver - init is also called on power_up 5095 if (hci_stack->chipset && hci_stack->chipset->init){ 5096 hci_stack->chipset->init(hci_stack->config); 5097 } 5098 } 5099 5100 void hci_enable_custom_pre_init(void){ 5101 hci_stack->chipset_pre_init = true; 5102 } 5103 5104 /** 5105 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5106 */ 5107 void hci_set_control(const btstack_control_t *hardware_control){ 5108 // references to used control implementation 5109 hci_stack->control = hardware_control; 5110 // init with transport config 5111 hardware_control->init(hci_stack->config); 5112 } 5113 5114 static void hci_discard_connections(void){ 5115 btstack_linked_list_iterator_t it; 5116 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5117 while (btstack_linked_list_iterator_has_next(&it)){ 5118 // cancel all l2cap connections by emitting disconnection complete before shutdown (free) connection 5119 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5120 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5121 hci_shutdown_connection(connection); 5122 } 5123 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5124 while (hci_stack->iso_streams != NULL){ 5125 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5126 } 5127 #endif 5128 } 5129 5130 void hci_close(void){ 5131 5132 #ifdef ENABLE_CLASSIC 5133 // close remote device db 5134 if (hci_stack->link_key_db) { 5135 hci_stack->link_key_db->close(); 5136 } 5137 #endif 5138 5139 hci_discard_connections(); 5140 5141 hci_power_control(HCI_POWER_OFF); 5142 5143 #ifdef HAVE_MALLOC 5144 free(hci_stack); 5145 #endif 5146 hci_stack = NULL; 5147 } 5148 5149 #ifdef HAVE_SCO_TRANSPORT 5150 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5151 hci_stack->sco_transport = sco_transport; 5152 sco_transport->register_packet_handler(&packet_handler); 5153 } 5154 #endif 5155 5156 #ifdef ENABLE_CLASSIC 5157 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5158 // validate range and set 5159 if (encryption_key_size < 7) return; 5160 if (encryption_key_size > 16) return; 5161 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5162 } 5163 5164 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5165 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5166 hci_stack->gap_security_mode = security_mode; 5167 return ERROR_CODE_SUCCESS; 5168 } else { 5169 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5170 } 5171 } 5172 5173 gap_security_mode_t gap_get_security_mode(void){ 5174 return hci_stack->gap_security_mode; 5175 } 5176 5177 void gap_set_security_level(gap_security_level_t security_level){ 5178 hci_stack->gap_security_level = security_level; 5179 } 5180 5181 gap_security_level_t gap_get_security_level(void){ 5182 if (hci_stack->gap_secure_connections_only_mode){ 5183 return LEVEL_4; 5184 } 5185 return hci_stack->gap_security_level; 5186 } 5187 5188 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5189 hci_stack->gap_minimal_service_security_level = security_level; 5190 } 5191 5192 void gap_set_secure_connections_only_mode(bool enable){ 5193 hci_stack->gap_secure_connections_only_mode = enable; 5194 } 5195 5196 bool gap_get_secure_connections_only_mode(void){ 5197 return hci_stack->gap_secure_connections_only_mode; 5198 } 5199 #endif 5200 5201 #ifdef ENABLE_CLASSIC 5202 void gap_set_class_of_device(uint32_t class_of_device){ 5203 hci_stack->class_of_device = class_of_device; 5204 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5205 hci_run(); 5206 } 5207 5208 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5209 hci_stack->default_link_policy_settings = default_link_policy_settings; 5210 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5211 hci_run(); 5212 } 5213 5214 void gap_set_allow_role_switch(bool allow_role_switch){ 5215 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5216 } 5217 5218 uint8_t hci_get_allow_role_switch(void){ 5219 return hci_stack->allow_role_switch; 5220 } 5221 5222 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5223 hci_stack->link_supervision_timeout = link_supervision_timeout; 5224 } 5225 5226 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5227 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5228 } 5229 5230 uint16_t hci_automatic_flush_timeout(void){ 5231 return hci_stack->automatic_flush_timeout; 5232 } 5233 5234 void hci_disable_l2cap_timeout_check(void){ 5235 disable_l2cap_timeouts = 1; 5236 } 5237 #endif 5238 5239 #ifndef HAVE_HOST_CONTROLLER_API 5240 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5241 void hci_set_bd_addr(bd_addr_t addr){ 5242 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5243 hci_stack->custom_bd_addr_set = 1; 5244 } 5245 #endif 5246 5247 // State-Module-Driver overview 5248 // state module low-level 5249 // HCI_STATE_OFF off close 5250 // HCI_STATE_INITIALIZING, on open 5251 // HCI_STATE_WORKING, on open 5252 // HCI_STATE_HALTING, on open 5253 // HCI_STATE_SLEEPING, off/sleep close 5254 // HCI_STATE_FALLING_ASLEEP on open 5255 5256 static int hci_power_control_on(void){ 5257 5258 // power on 5259 int err = 0; 5260 if (hci_stack->control && hci_stack->control->on){ 5261 err = (*hci_stack->control->on)(); 5262 } 5263 if (err){ 5264 log_error( "POWER_ON failed"); 5265 hci_emit_hci_open_failed(); 5266 return err; 5267 } 5268 5269 // int chipset driver 5270 if (hci_stack->chipset && hci_stack->chipset->init){ 5271 hci_stack->chipset->init(hci_stack->config); 5272 } 5273 5274 // init transport 5275 if (hci_stack->hci_transport->init){ 5276 hci_stack->hci_transport->init(hci_stack->config); 5277 } 5278 5279 // open transport 5280 err = hci_stack->hci_transport->open(); 5281 if (err){ 5282 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5283 if (hci_stack->control && hci_stack->control->off){ 5284 (*hci_stack->control->off)(); 5285 } 5286 hci_emit_hci_open_failed(); 5287 return err; 5288 } 5289 return 0; 5290 } 5291 5292 static void hci_power_control_off(void){ 5293 5294 log_info("hci_power_control_off"); 5295 5296 // close low-level device 5297 hci_stack->hci_transport->close(); 5298 5299 log_info("hci_power_control_off - hci_transport closed"); 5300 5301 // power off 5302 if (hci_stack->control && hci_stack->control->off){ 5303 (*hci_stack->control->off)(); 5304 } 5305 5306 log_info("hci_power_control_off - control closed"); 5307 5308 hci_stack->state = HCI_STATE_OFF; 5309 } 5310 5311 static void hci_power_control_sleep(void){ 5312 5313 log_info("hci_power_control_sleep"); 5314 5315 #if 0 5316 // don't close serial port during sleep 5317 5318 // close low-level device 5319 hci_stack->hci_transport->close(hci_stack->config); 5320 #endif 5321 5322 // sleep mode 5323 if (hci_stack->control && hci_stack->control->sleep){ 5324 (*hci_stack->control->sleep)(); 5325 } 5326 5327 hci_stack->state = HCI_STATE_SLEEPING; 5328 } 5329 5330 static int hci_power_control_wake(void){ 5331 5332 log_info("hci_power_control_wake"); 5333 5334 // wake on 5335 if (hci_stack->control && hci_stack->control->wake){ 5336 (*hci_stack->control->wake)(); 5337 } 5338 5339 #if 0 5340 // open low-level device 5341 int err = hci_stack->hci_transport->open(hci_stack->config); 5342 if (err){ 5343 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5344 if (hci_stack->control && hci_stack->control->off){ 5345 (*hci_stack->control->off)(); 5346 } 5347 hci_emit_hci_open_failed(); 5348 return err; 5349 } 5350 #endif 5351 5352 return 0; 5353 } 5354 5355 static void hci_power_enter_initializing_state(void){ 5356 // set up state machine 5357 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5358 hci_stack->hci_packet_buffer_reserved = false; 5359 hci_stack->state = HCI_STATE_INITIALIZING; 5360 5361 #ifndef HAVE_HOST_CONTROLLER_API 5362 if (hci_stack->chipset_pre_init) { 5363 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5364 } else 5365 #endif 5366 { 5367 hci_stack->substate = HCI_INIT_SEND_RESET; 5368 } 5369 } 5370 5371 static void hci_power_enter_halting_state(void){ 5372 #ifdef ENABLE_BLE 5373 // drop entries scheduled for removal, mark others for re-adding 5374 btstack_linked_list_iterator_t it; 5375 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5376 while (btstack_linked_list_iterator_has_next(&it)){ 5377 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5378 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5379 btstack_linked_list_iterator_remove(&it); 5380 btstack_memory_whitelist_entry_free(entry); 5381 } else { 5382 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5383 } 5384 } 5385 #ifdef ENABLE_LE_CENTRAL 5386 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5387 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5388 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5389 while (btstack_linked_list_iterator_has_next(&it)){ 5390 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5391 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5392 btstack_linked_list_iterator_remove(&it); 5393 btstack_memory_periodic_advertiser_list_entry_free(entry); 5394 } else { 5395 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5396 continue; 5397 } 5398 } 5399 #endif 5400 #endif 5401 #endif 5402 // see hci_run 5403 hci_stack->state = HCI_STATE_HALTING; 5404 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5405 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5406 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5407 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5408 btstack_run_loop_add_timer(&hci_stack->timeout); 5409 } 5410 5411 // returns error 5412 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5413 int err; 5414 switch (power_mode){ 5415 case HCI_POWER_ON: 5416 err = hci_power_control_on(); 5417 if (err != 0) { 5418 log_error("hci_power_control_on() error %d", err); 5419 return err; 5420 } 5421 hci_power_enter_initializing_state(); 5422 break; 5423 case HCI_POWER_OFF: 5424 // do nothing 5425 break; 5426 case HCI_POWER_SLEEP: 5427 // do nothing (with SLEEP == OFF) 5428 break; 5429 default: 5430 btstack_assert(false); 5431 break; 5432 } 5433 return ERROR_CODE_SUCCESS; 5434 } 5435 5436 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5437 switch (power_mode){ 5438 case HCI_POWER_ON: 5439 // do nothing 5440 break; 5441 case HCI_POWER_OFF: 5442 // no connections yet, just turn it off 5443 hci_power_control_off(); 5444 break; 5445 case HCI_POWER_SLEEP: 5446 // no connections yet, just turn it off 5447 hci_power_control_sleep(); 5448 break; 5449 default: 5450 btstack_assert(false); 5451 break; 5452 } 5453 return ERROR_CODE_SUCCESS; 5454 } 5455 5456 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5457 switch (power_mode){ 5458 case HCI_POWER_ON: 5459 // do nothing 5460 break; 5461 case HCI_POWER_OFF: 5462 hci_power_enter_halting_state(); 5463 break; 5464 case HCI_POWER_SLEEP: 5465 // see hci_run 5466 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5467 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5468 break; 5469 default: 5470 btstack_assert(false); 5471 break; 5472 } 5473 return ERROR_CODE_SUCCESS; 5474 } 5475 5476 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5477 switch (power_mode){ 5478 case HCI_POWER_ON: 5479 hci_power_enter_initializing_state(); 5480 break; 5481 case HCI_POWER_OFF: 5482 // do nothing 5483 break; 5484 case HCI_POWER_SLEEP: 5485 // see hci_run 5486 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5487 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5488 break; 5489 default: 5490 btstack_assert(false); 5491 break; 5492 } 5493 return ERROR_CODE_SUCCESS; 5494 } 5495 5496 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5497 switch (power_mode){ 5498 case HCI_POWER_ON: 5499 hci_power_enter_initializing_state(); 5500 break; 5501 case HCI_POWER_OFF: 5502 hci_power_enter_halting_state(); 5503 break; 5504 case HCI_POWER_SLEEP: 5505 // do nothing 5506 break; 5507 default: 5508 btstack_assert(false); 5509 break; 5510 } 5511 return ERROR_CODE_SUCCESS; 5512 } 5513 5514 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5515 int err; 5516 switch (power_mode){ 5517 case HCI_POWER_ON: 5518 err = hci_power_control_wake(); 5519 if (err) return err; 5520 hci_power_enter_initializing_state(); 5521 break; 5522 case HCI_POWER_OFF: 5523 hci_power_enter_halting_state(); 5524 break; 5525 case HCI_POWER_SLEEP: 5526 // do nothing 5527 break; 5528 default: 5529 btstack_assert(false); 5530 break; 5531 } 5532 return ERROR_CODE_SUCCESS; 5533 } 5534 5535 int hci_power_control(HCI_POWER_MODE power_mode){ 5536 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5537 btstack_run_loop_remove_timer(&hci_stack->timeout); 5538 int err = 0; 5539 switch (hci_stack->state){ 5540 case HCI_STATE_OFF: 5541 err = hci_power_control_state_off(power_mode); 5542 break; 5543 case HCI_STATE_INITIALIZING: 5544 err = hci_power_control_state_initializing(power_mode); 5545 break; 5546 case HCI_STATE_WORKING: 5547 err = hci_power_control_state_working(power_mode); 5548 break; 5549 case HCI_STATE_HALTING: 5550 err = hci_power_control_state_halting(power_mode); 5551 break; 5552 case HCI_STATE_FALLING_ASLEEP: 5553 err = hci_power_control_state_falling_asleep(power_mode); 5554 break; 5555 case HCI_STATE_SLEEPING: 5556 err = hci_power_control_state_sleeping(power_mode); 5557 break; 5558 default: 5559 btstack_assert(false); 5560 break; 5561 } 5562 if (err != 0){ 5563 return err; 5564 } 5565 5566 // create internal event 5567 hci_emit_state(); 5568 5569 // trigger next/first action 5570 hci_run(); 5571 5572 return 0; 5573 } 5574 5575 5576 static void hci_halting_run(void) { 5577 5578 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5579 5580 hci_connection_t *connection; 5581 #ifdef ENABLE_BLE 5582 #ifdef ENABLE_LE_PERIPHERAL 5583 bool stop_advertisements; 5584 #endif 5585 #endif 5586 5587 switch (hci_stack->substate) { 5588 case HCI_HALTING_CLASSIC_STOP: 5589 #ifdef ENABLE_CLASSIC 5590 if (!hci_can_send_command_packet_now()) return; 5591 5592 if (hci_stack->connectable || hci_stack->discoverable){ 5593 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5594 hci_send_cmd(&hci_write_scan_enable, 0); 5595 return; 5596 } 5597 #endif 5598 /* fall through */ 5599 5600 case HCI_HALTING_LE_ADV_STOP: 5601 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5602 5603 #ifdef ENABLE_BLE 5604 #ifdef ENABLE_LE_PERIPHERAL 5605 if (!hci_can_send_command_packet_now()) return; 5606 5607 stop_advertisements = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5608 5609 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5610 if (hci_le_extended_advertising_supported()){ 5611 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5612 btstack_linked_list_iterator_t it; 5613 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5614 // stop all periodic advertisements and check if an extended set is active 5615 while (btstack_linked_list_iterator_has_next(&it)){ 5616 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5617 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5618 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5619 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5620 return; 5621 } 5622 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5623 stop_advertisements = true; 5624 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5625 } 5626 } 5627 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5628 if (stop_advertisements){ 5629 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5630 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5631 return; 5632 } 5633 } else 5634 #else /* ENABLE_LE_PERIPHERAL */ 5635 { 5636 if (stop_advertisements) { 5637 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5638 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5639 return; 5640 } 5641 } 5642 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5643 #endif /* ENABLE_LE_PERIPHERAL */ 5644 #endif /* ENABLE_BLE */ 5645 5646 /* fall through */ 5647 5648 case HCI_HALTING_LE_SCAN_STOP: 5649 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5650 if (!hci_can_send_command_packet_now()) return; 5651 5652 #ifdef ENABLE_BLE 5653 #ifdef ENABLE_LE_CENTRAL 5654 if (hci_stack->le_scanning_active){ 5655 hci_le_scan_stop(); 5656 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5657 return; 5658 } 5659 #endif 5660 #endif 5661 5662 /* fall through */ 5663 5664 case HCI_HALTING_DISCONNECT_ALL: 5665 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5666 if (!hci_can_send_command_packet_now()) return; 5667 5668 // close all open connections 5669 connection = (hci_connection_t *) hci_stack->connections; 5670 if (connection) { 5671 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5672 5673 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", (void*)connection, con_handle, connection->state); 5674 5675 // check state 5676 switch(connection->state) { 5677 case SENT_DISCONNECT: 5678 case RECEIVED_DISCONNECTION_COMPLETE: 5679 // wait until connection is gone 5680 return; 5681 default: 5682 break; 5683 } 5684 5685 // finally, send the disconnect command 5686 connection->state = SENT_DISCONNECT; 5687 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5688 return; 5689 } 5690 5691 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5692 // stop BIGs and BIG Syncs 5693 if (hci_stack->le_audio_bigs != NULL){ 5694 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5695 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5696 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5697 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5698 return; 5699 } 5700 if (hci_stack->le_audio_big_syncs != NULL){ 5701 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5702 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5703 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5704 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5705 return; 5706 } 5707 #endif 5708 5709 btstack_run_loop_remove_timer(&hci_stack->timeout); 5710 5711 // no connections left, wait a bit to assert that btstack_crypto isn't waiting for an HCI event 5712 log_info("HCI_STATE_HALTING: wait 50 ms"); 5713 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5714 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5715 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5716 btstack_run_loop_add_timer(&hci_stack->timeout); 5717 break; 5718 5719 case HCI_HALTING_W4_CLOSE_TIMER: 5720 // keep waiting 5721 break; 5722 5723 case HCI_HALTING_CLOSE: 5724 // close left over connections (that had not been properly closed before) 5725 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5726 hci_discard_connections(); 5727 5728 log_info("HCI_STATE_HALTING, calling off"); 5729 5730 // switch mode 5731 hci_power_control_off(); 5732 5733 log_info("HCI_STATE_HALTING, emitting state"); 5734 hci_emit_state(); 5735 log_info("HCI_STATE_HALTING, done"); 5736 break; 5737 5738 default: 5739 break; 5740 } 5741 } 5742 5743 static void hci_falling_asleep_run(void){ 5744 hci_connection_t * connection; 5745 switch(hci_stack->substate) { 5746 case HCI_FALLING_ASLEEP_DISCONNECT: 5747 log_info("HCI_STATE_FALLING_ASLEEP"); 5748 // close all open connections 5749 connection = (hci_connection_t *) hci_stack->connections; 5750 if (connection){ 5751 5752 // send disconnect 5753 if (!hci_can_send_command_packet_now()) return; 5754 5755 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", (void*)connection, (uint16_t)connection->con_handle); 5756 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5757 5758 // send disconnected event right away - causes higher layer connections to get closed, too. 5759 hci_shutdown_connection(connection); 5760 return; 5761 } 5762 5763 if (hci_classic_supported()){ 5764 // disable page and inquiry scan 5765 if (!hci_can_send_command_packet_now()) return; 5766 5767 log_info("HCI_STATE_HALTING, disabling inq scans"); 5768 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5769 5770 // continue in next substate 5771 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5772 break; 5773 } 5774 5775 /* fall through */ 5776 5777 case HCI_FALLING_ASLEEP_COMPLETE: 5778 log_info("HCI_STATE_HALTING, calling sleep"); 5779 // switch mode 5780 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5781 hci_emit_state(); 5782 break; 5783 5784 default: 5785 break; 5786 } 5787 } 5788 5789 #ifdef ENABLE_CLASSIC 5790 5791 static void hci_update_scan_enable(void){ 5792 // 2 = page scan, 1 = inq scan 5793 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5794 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5795 hci_run(); 5796 } 5797 5798 void gap_discoverable_control(uint8_t enable){ 5799 if (enable) enable = 1; // normalize argument 5800 5801 if (hci_stack->discoverable == enable){ 5802 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5803 return; 5804 } 5805 5806 hci_stack->discoverable = enable; 5807 hci_update_scan_enable(); 5808 } 5809 5810 void gap_connectable_control(uint8_t enable){ 5811 if (enable) enable = 1; // normalize argument 5812 5813 // don't emit event 5814 if (hci_stack->connectable == enable) return; 5815 5816 hci_stack->connectable = enable; 5817 hci_update_scan_enable(); 5818 } 5819 #endif 5820 5821 void gap_local_bd_addr(bd_addr_t address_buffer){ 5822 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5823 } 5824 5825 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5826 static void hci_host_num_completed_packets(void){ 5827 5828 // create packet manually as arrays are not supported and num_commands should not get reduced 5829 hci_reserve_packet_buffer(); 5830 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5831 5832 uint16_t size = 0; 5833 uint16_t num_handles = 0; 5834 packet[size++] = 0x35; 5835 packet[size++] = 0x0c; 5836 size++; // skip param len 5837 size++; // skip num handles 5838 5839 // add { handle, packets } entries 5840 btstack_linked_item_t * it; 5841 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5842 hci_connection_t * connection = (hci_connection_t *) it; 5843 if (connection->num_packets_completed){ 5844 little_endian_store_16(packet, size, connection->con_handle); 5845 size += 2; 5846 little_endian_store_16(packet, size, connection->num_packets_completed); 5847 size += 2; 5848 // 5849 num_handles++; 5850 connection->num_packets_completed = 0; 5851 } 5852 } 5853 5854 packet[2] = size - 3; 5855 packet[3] = num_handles; 5856 5857 hci_stack->host_completed_packets = 0; 5858 5859 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5860 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5861 5862 // release packet buffer for synchronous transport implementations 5863 if (hci_transport_synchronous()){ 5864 hci_release_packet_buffer(); 5865 hci_emit_transport_packet_sent(); 5866 } 5867 } 5868 #endif 5869 5870 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5871 UNUSED(ds); 5872 hci_stack->substate = HCI_HALTING_CLOSE; 5873 hci_halting_run(); 5874 } 5875 5876 static bool hci_run_acl_fragments(void){ 5877 if (hci_stack->acl_fragmentation_total_size > 0u) { 5878 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5879 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5880 if (connection) { 5881 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5882 hci_send_acl_packet_fragments(connection); 5883 return true; 5884 } 5885 } else { 5886 // connection gone -> discard further fragments 5887 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5888 hci_stack->acl_fragmentation_total_size = 0; 5889 hci_stack->acl_fragmentation_pos = 0; 5890 } 5891 } 5892 return false; 5893 } 5894 5895 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5896 static bool hci_run_iso_fragments(void){ 5897 if (hci_stack->iso_fragmentation_total_size > 0u) { 5898 // TODO: flow control 5899 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5900 hci_send_iso_packet_fragments(); 5901 return true; 5902 } 5903 } 5904 return false; 5905 } 5906 #endif 5907 5908 #ifdef ENABLE_CLASSIC 5909 5910 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5911 static bool hci_classic_operation_active(void) { 5912 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5913 return true; 5914 } 5915 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5916 return true; 5917 } 5918 btstack_linked_item_t * it; 5919 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5920 hci_connection_t *connection = (hci_connection_t *) it; 5921 switch (connection->state) { 5922 case SENT_CREATE_CONNECTION: 5923 case SENT_CANCEL_CONNECTION: 5924 case SENT_DISCONNECT: 5925 return true; 5926 default: 5927 break; 5928 } 5929 } 5930 return false; 5931 } 5932 #endif 5933 5934 static bool hci_run_general_gap_classic(void){ 5935 5936 // assert stack is working and classic is active 5937 if (hci_classic_supported() == false) return false; 5938 if (hci_stack->state != HCI_STATE_WORKING) return false; 5939 5940 // decline incoming connections 5941 if (hci_stack->decline_reason){ 5942 uint8_t reason = hci_stack->decline_reason; 5943 hci_stack->decline_reason = 0; 5944 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5945 return true; 5946 } 5947 5948 if (hci_stack->gap_tasks_classic != 0){ 5949 hci_run_gap_tasks_classic(); 5950 return true; 5951 } 5952 5953 // start/stop inquiry 5954 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5955 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5956 if (hci_classic_operation_active() == false) 5957 #endif 5958 { 5959 uint8_t duration = hci_stack->inquiry_state; 5960 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5961 if (hci_stack->inquiry_max_period_length != 0){ 5962 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); 5963 } else { 5964 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5965 } 5966 return true; 5967 } 5968 } 5969 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5970 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5971 hci_send_cmd(&hci_inquiry_cancel); 5972 return true; 5973 } 5974 5975 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5976 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5977 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5978 return true; 5979 } 5980 5981 // remote name request 5982 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5983 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5984 if (hci_classic_operation_active() == false) 5985 #endif 5986 { 5987 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5988 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5989 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5990 return true; 5991 } 5992 } 5993 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5994 // Local OOB data 5995 if (hci_stack->classic_read_local_oob_data){ 5996 hci_stack->classic_read_local_oob_data = false; 5997 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5998 hci_send_cmd(&hci_read_local_extended_oob_data); 5999 } else { 6000 hci_send_cmd(&hci_read_local_oob_data); 6001 } 6002 } 6003 #endif 6004 // pairing 6005 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 6006 uint8_t state = hci_stack->gap_pairing_state; 6007 uint8_t pin_code[PIN_CODE_LEN]; 6008 switch (state){ 6009 case GAP_PAIRING_STATE_SEND_PIN: 6010 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6011 memset(pin_code, 0, 16); 6012 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 6013 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 6014 break; 6015 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 6016 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6017 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 6018 break; 6019 case GAP_PAIRING_STATE_SEND_PASSKEY: 6020 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6021 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 6022 break; 6023 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 6024 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6025 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 6026 break; 6027 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 6028 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6029 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 6030 break; 6031 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 6032 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6033 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 6034 break; 6035 default: 6036 break; 6037 } 6038 return true; 6039 } 6040 return false; 6041 } 6042 #endif 6043 6044 #ifdef ENABLE_BLE 6045 6046 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6047 static uint8_t hci_le_num_phys(uint8_t phys){ 6048 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 6049 btstack_assert(phys); 6050 return num_bits_set[phys]; 6051 } 6052 #endif 6053 6054 #ifdef ENABLE_LE_CENTRAL 6055 static void hci_le_scan_stop(void){ 6056 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6057 if (hci_le_extended_advertising_supported()) { 6058 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 6059 } else 6060 #endif 6061 { 6062 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 6063 } 6064 } 6065 6066 static void 6067 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 6068 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6069 if (hci_le_extended_advertising_supported()) { 6070 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6071 uint16_t le_connection_scan_interval[3]; 6072 uint16_t le_connection_scan_window[3]; 6073 uint16_t le_connection_interval_min[3]; 6074 uint16_t le_connection_interval_max[3]; 6075 uint16_t le_connection_latency[3]; 6076 uint16_t le_supervision_timeout[3]; 6077 uint16_t le_minimum_ce_length[3]; 6078 uint16_t le_maximum_ce_length[3]; 6079 6080 uint8_t i; 6081 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6082 for (i=0;i<num_phys;i++){ 6083 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6084 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6085 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6086 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6087 le_connection_latency[i] = hci_stack->le_connection_latency; 6088 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6089 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6090 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6091 } 6092 hci_send_cmd(&hci_le_extended_create_connection, 6093 initiator_filter_policy, 6094 hci_stack->le_connection_own_addr_type, // our addr type: 6095 address_type, // peer address type 6096 address, // peer bd addr 6097 hci_stack->le_connection_phys, // initiating PHY 6098 le_connection_scan_interval, // conn scan interval 6099 le_connection_scan_window, // conn scan windows 6100 le_connection_interval_min, // conn interval min 6101 le_connection_interval_max, // conn interval max 6102 le_connection_latency, // conn latency 6103 le_supervision_timeout, // conn latency 6104 le_minimum_ce_length, // min ce length 6105 le_maximum_ce_length // max ce length 6106 ); 6107 } else 6108 #endif 6109 { 6110 hci_send_cmd(&hci_le_create_connection, 6111 hci_stack->le_connection_scan_interval, // conn scan interval 6112 hci_stack->le_connection_scan_window, // conn scan windows 6113 initiator_filter_policy, // don't use whitelist 6114 address_type, // peer address type 6115 address, // peer bd addr 6116 hci_stack->le_connection_own_addr_type, // our addr type: 6117 hci_stack->le_connection_interval_min, // conn interval min 6118 hci_stack->le_connection_interval_max, // conn interval max 6119 hci_stack->le_connection_latency, // conn latency 6120 hci_stack->le_supervision_timeout, // conn latency 6121 hci_stack->le_minimum_ce_length, // min ce length 6122 hci_stack->le_maximum_ce_length // max ce length 6123 ); 6124 } 6125 } 6126 #endif 6127 6128 #ifdef ENABLE_LE_PERIPHERAL 6129 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6130 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6131 uint8_t operation = 0; 6132 if (pos == 0){ 6133 // first fragment or complete data 6134 operation |= 1; 6135 } 6136 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6137 // last fragment or complete data 6138 operation |= 2; 6139 } 6140 return operation; 6141 } 6142 #endif 6143 #endif 6144 6145 static bool hci_whitelist_modification_pending(void) { 6146 btstack_linked_list_iterator_t it; 6147 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6148 while (btstack_linked_list_iterator_has_next(&it)){ 6149 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6150 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6151 return true; 6152 } 6153 } 6154 return false; 6155 } 6156 6157 static bool hci_whitelist_modification_process(void){ 6158 // add/remove entries 6159 btstack_linked_list_iterator_t it; 6160 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6161 while (btstack_linked_list_iterator_has_next(&it)){ 6162 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6163 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6164 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6165 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6166 bd_addr_type_t address_type = entry->address_type; 6167 bd_addr_t address; 6168 memcpy(address, entry->address, 6); 6169 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6170 // remove from whitelist if not scheduled for re-addition 6171 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6172 btstack_memory_whitelist_entry_free(entry); 6173 } 6174 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6175 return true; 6176 } 6177 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6178 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6179 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6180 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6181 return true; 6182 } 6183 } 6184 return false; 6185 } 6186 6187 static bool hci_run_general_gap_le(void){ 6188 6189 btstack_linked_list_iterator_t lit; 6190 UNUSED(lit); 6191 6192 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6193 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6194 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6195 hci_stack->le_resolvable_private_address_update_s = 0; 6196 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6197 return true; 6198 } 6199 #endif 6200 6201 // Phase 1: collect what to stop 6202 6203 #ifdef ENABLE_LE_CENTRAL 6204 bool scanning_stop = false; 6205 bool connecting_stop = false; 6206 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6207 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6208 bool periodic_sync_stop = false; 6209 #endif 6210 #endif 6211 #endif 6212 6213 #ifdef ENABLE_LE_PERIPHERAL 6214 bool advertising_stop = false; 6215 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6216 le_advertising_set_t * advertising_stop_set = NULL; 6217 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6218 bool periodic_advertising_stop = false; 6219 #endif 6220 #endif 6221 #endif 6222 6223 // check if own address changes 6224 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6225 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6226 6227 // check if whitelist needs modification 6228 bool whitelist_modification_pending = hci_whitelist_modification_pending(); 6229 6230 // check if resolving list needs modification 6231 bool resolving_list_modification_pending = false; 6232 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6233 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6234 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6235 resolving_list_modification_pending = true; 6236 } 6237 #endif 6238 6239 #ifdef ENABLE_LE_CENTRAL 6240 6241 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6242 // check if periodic advertiser list needs modification 6243 bool periodic_list_modification_pending = false; 6244 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6245 while (btstack_linked_list_iterator_has_next(&lit)){ 6246 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6247 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6248 periodic_list_modification_pending = true; 6249 break; 6250 } 6251 } 6252 #endif 6253 6254 // scanning control 6255 if (hci_stack->le_scanning_active) { 6256 // stop if: 6257 // - parameter change required 6258 // - it's disabled 6259 // - whitelist change required but used for scanning 6260 // - resolving list modified 6261 // - own address changes 6262 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6263 if ((hci_stack->le_scanning_param_update) || 6264 !hci_stack->le_scanning_enabled || 6265 (scanning_uses_whitelist && whitelist_modification_pending) || 6266 resolving_list_modification_pending || 6267 random_address_change){ 6268 6269 scanning_stop = true; 6270 } 6271 } 6272 6273 // connecting control 6274 bool connecting_with_whitelist; 6275 switch (hci_stack->le_connecting_state){ 6276 case LE_CONNECTING_DIRECT: 6277 case LE_CONNECTING_WHITELIST: 6278 // stop connecting if: 6279 // - connecting uses white and whitelist modification pending 6280 // - if it got disabled 6281 // - resolving list modified 6282 // - own address changes 6283 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6284 if ((connecting_with_whitelist && whitelist_modification_pending) || 6285 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6286 resolving_list_modification_pending || 6287 random_address_change) { 6288 6289 connecting_stop = true; 6290 } 6291 break; 6292 default: 6293 break; 6294 } 6295 6296 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6297 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6298 // periodic sync control 6299 bool sync_with_advertiser_list; 6300 switch(hci_stack->le_periodic_sync_state){ 6301 case LE_CONNECTING_DIRECT: 6302 case LE_CONNECTING_WHITELIST: 6303 // stop sync if: 6304 // - sync with advertiser list and advertiser list modification pending 6305 // - if it got disabled 6306 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6307 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6308 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6309 periodic_sync_stop = true; 6310 } 6311 break; 6312 default: 6313 break; 6314 } 6315 #endif 6316 #endif 6317 6318 #endif /* ENABLE_LE_CENTRAL */ 6319 6320 #ifdef ENABLE_LE_PERIPHERAL 6321 // le advertisement control 6322 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6323 // stop if: 6324 // - parameter change required 6325 // - random address used in advertising and changes 6326 // - it's disabled 6327 // - whitelist change required but used for advertisement filter policy 6328 // - resolving list modified 6329 // - own address changes 6330 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6331 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6332 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6333 if (advertising_change || 6334 (advertising_uses_random_address && random_address_change) || 6335 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6336 (advertising_uses_whitelist && whitelist_modification_pending) || 6337 resolving_list_modification_pending || 6338 random_address_change) { 6339 6340 advertising_stop = true; 6341 } 6342 } 6343 6344 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6345 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6346 btstack_linked_list_iterator_t it; 6347 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6348 while (btstack_linked_list_iterator_has_next(&it)){ 6349 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6350 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6351 // stop if: 6352 // - parameter change required 6353 // - random address used in connectable advertising and changes 6354 // - it's disabled 6355 // - whitelist change required but used for advertisement filter policy 6356 // - resolving list modified 6357 // - own address changes 6358 // - advertisement set will be removed 6359 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6360 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6361 bool advertising_uses_random_address = 6362 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6363 advertising_connectable; 6364 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6365 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6366 bool advertising_set_random_address_change = 6367 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6368 bool advertising_set_will_be_removed = 6369 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6370 if (advertising_parameter_change || 6371 (advertising_uses_random_address && advertising_set_random_address_change) || 6372 (advertising_enabled == false) || 6373 (advertising_uses_whitelist && whitelist_modification_pending) || 6374 resolving_list_modification_pending || 6375 advertising_set_will_be_removed) { 6376 6377 advertising_stop = true; 6378 advertising_stop_set = advertising_set; 6379 break; 6380 } 6381 } 6382 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6383 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6384 // stop if: 6385 // - it's disabled 6386 // - parameter change required 6387 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6388 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6389 if ((periodic_enabled == false) || periodic_parameter_change){ 6390 periodic_advertising_stop = true; 6391 advertising_stop_set = advertising_set; 6392 } 6393 } 6394 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6395 } 6396 } 6397 #endif 6398 6399 #endif 6400 6401 6402 // Phase 2: stop everything that should be off during modifications 6403 6404 6405 // 2.1 Outgoing connection 6406 #ifdef ENABLE_LE_CENTRAL 6407 if (connecting_stop){ 6408 hci_send_cmd(&hci_le_create_connection_cancel); 6409 return true; 6410 } 6411 #endif 6412 6413 // 2.2 Scanning 6414 #ifdef ENABLE_LE_CENTRAL 6415 if (scanning_stop){ 6416 hci_stack->le_scanning_active = false; 6417 hci_le_scan_stop(); 6418 return true; 6419 } 6420 6421 // 2.3 Periodic Sync 6422 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6423 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6424 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6425 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6426 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6427 return true; 6428 } 6429 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6430 if (periodic_sync_stop){ 6431 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6432 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6433 return true; 6434 } 6435 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6436 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6437 #endif /* ENABLE_LE_CENTRAL */ 6438 6439 // 2.4 Advertising: legacy, extended, periodic 6440 #ifdef ENABLE_LE_PERIPHERAL 6441 if (advertising_stop){ 6442 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6443 if (hci_le_extended_advertising_supported()) { 6444 uint8_t advertising_stop_handle; 6445 if (advertising_stop_set != NULL){ 6446 advertising_stop_handle = advertising_stop_set->advertising_handle; 6447 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6448 } else { 6449 advertising_stop_handle = 0; 6450 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6451 } 6452 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6453 const uint16_t durations[] = { 0 }; 6454 const uint16_t max_events[] = { 0 }; 6455 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6456 } else 6457 #endif 6458 { 6459 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6460 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6461 } 6462 return true; 6463 } 6464 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6465 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6466 if (periodic_advertising_stop){ 6467 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6468 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6469 return true; 6470 } 6471 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6472 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6473 #endif /* ENABLE_LE_PERIPHERAL */ 6474 6475 6476 // Phase 3: modify 6477 6478 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6479 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6480 // GAP Privacy, notify clients upon upcoming random address change 6481 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6482 // notify might cause hci_run to get executed, check if we still can send 6483 gap_privacy_clients_notify(hci_stack->le_random_address); 6484 if (!hci_can_send_command_packet_now()) { 6485 return true; 6486 } 6487 } 6488 6489 // - wait until privacy update completed 6490 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6491 return false; 6492 } 6493 6494 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6495 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6496 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6497 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6498 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6499 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6500 #endif 6501 return true; 6502 } 6503 6504 #ifdef ENABLE_LE_CENTRAL 6505 if (hci_stack->le_scanning_param_update){ 6506 hci_stack->le_scanning_param_update = false; 6507 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6508 if (hci_le_extended_advertising_supported()){ 6509 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6510 uint8_t scan_types[2]; 6511 uint16_t scan_intervals[2]; 6512 uint16_t scan_windows[2]; 6513 6514 uint8_t i; 6515 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6516 for (i=0;i<num_phys;i++){ 6517 scan_types[i] = hci_stack->le_scan_type; 6518 scan_intervals[i] = hci_stack->le_scan_interval; 6519 scan_windows[i] = hci_stack->le_scan_window; 6520 } 6521 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6522 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6523 } else 6524 #endif 6525 { 6526 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6527 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6528 } 6529 return true; 6530 } 6531 #endif 6532 6533 #ifdef ENABLE_LE_PERIPHERAL 6534 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6535 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6536 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6537 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6538 if (hci_le_extended_advertising_supported()){ 6539 // map advertisment type to advertising event properties 6540 uint16_t adv_event_properties = 0; 6541 // 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000 6542 const uint16_t mapping[] = { 0x13, 0x15, 0x1D, 0x12, 0x10 }; 6543 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6544 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6545 } 6546 hci_stack->le_advertising_set_in_current_command = 0; 6547 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6548 0, 6549 adv_event_properties, 6550 hci_stack->le_advertisements_interval_min, 6551 hci_stack->le_advertisements_interval_max, 6552 hci_stack->le_advertisements_channel_map, 6553 hci_stack->le_advertisements_own_addr_type, 6554 hci_stack->le_advertisements_direct_address_type, 6555 hci_stack->le_advertisements_direct_address, 6556 hci_stack->le_advertisements_filter_policy, 6557 0x7f, // tx power: no preference 6558 0x01, // primary adv phy: LE 1M 6559 0, // secondary adv max skip 6560 0x01, // secondary adv phy 6561 0, // adv sid 6562 0 // scan request notification 6563 ); 6564 } else 6565 #endif 6566 { 6567 hci_send_cmd(&hci_le_set_advertising_parameters, 6568 hci_stack->le_advertisements_interval_min, 6569 hci_stack->le_advertisements_interval_max, 6570 hci_stack->le_advertisements_type, 6571 hci_stack->le_advertisements_own_addr_type, 6572 hci_stack->le_advertisements_direct_address_type, 6573 hci_stack->le_advertisements_direct_address, 6574 hci_stack->le_advertisements_channel_map, 6575 hci_stack->le_advertisements_filter_policy); 6576 } 6577 return true; 6578 } 6579 6580 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6581 // assumption: only set if extended advertising is supported 6582 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6583 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6584 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6585 return true; 6586 } 6587 #endif 6588 6589 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6590 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6591 uint8_t adv_data_clean[31]; 6592 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6593 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6594 hci_stack->le_advertisements_data_len); 6595 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6596 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6597 if (hci_le_extended_advertising_supported()){ 6598 hci_stack->le_advertising_set_in_current_command = 0; 6599 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6600 } else 6601 #endif 6602 { 6603 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6604 } 6605 return true; 6606 } 6607 6608 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6609 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6610 uint8_t scan_data_clean[31]; 6611 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6612 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6613 hci_stack->le_scan_response_data_len); 6614 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6615 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6616 if (hci_le_extended_advertising_supported()){ 6617 hci_stack->le_advertising_set_in_current_command = 0; 6618 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6619 } else 6620 #endif 6621 { 6622 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6623 } 6624 return true; 6625 } 6626 6627 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6628 if (hci_le_extended_advertising_supported()) { 6629 btstack_linked_list_iterator_t it; 6630 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6631 while (btstack_linked_list_iterator_has_next(&it)){ 6632 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6633 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6634 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6635 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6636 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6637 return true; 6638 } 6639 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6640 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6641 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6642 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6643 advertising_set->advertising_handle, 6644 advertising_set->extended_params.advertising_event_properties, 6645 advertising_set->extended_params.primary_advertising_interval_min, 6646 advertising_set->extended_params.primary_advertising_interval_max, 6647 advertising_set->extended_params.primary_advertising_channel_map, 6648 advertising_set->extended_params.own_address_type, 6649 advertising_set->extended_params.peer_address_type, 6650 advertising_set->extended_params.peer_address, 6651 advertising_set->extended_params.advertising_filter_policy, 6652 advertising_set->extended_params.advertising_tx_power, 6653 advertising_set->extended_params.primary_advertising_phy, 6654 advertising_set->extended_params.secondary_advertising_max_skip, 6655 advertising_set->extended_params.secondary_advertising_phy, 6656 advertising_set->extended_params.advertising_sid, 6657 advertising_set->extended_params.scan_request_notification_enable 6658 ); 6659 return true; 6660 } 6661 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6662 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6663 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6664 return true; 6665 } 6666 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6667 uint16_t pos = advertising_set->adv_data_pos; 6668 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6669 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6670 if ((operation & 0x02) != 0){ 6671 // last fragment or complete data 6672 operation |= 2; 6673 advertising_set->adv_data_pos = 0; 6674 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6675 } else { 6676 advertising_set->adv_data_pos += data_to_upload; 6677 } 6678 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6679 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6680 return true; 6681 } 6682 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6683 uint16_t pos = advertising_set->scan_data_pos; 6684 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6685 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6686 if ((operation & 0x02) != 0){ 6687 advertising_set->scan_data_pos = 0; 6688 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6689 } else { 6690 advertising_set->scan_data_pos += data_to_upload; 6691 } 6692 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6693 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6694 return true; 6695 } 6696 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6697 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6698 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6699 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6700 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6701 advertising_set->advertising_handle, 6702 advertising_set->periodic_params.periodic_advertising_interval_min, 6703 advertising_set->periodic_params.periodic_advertising_interval_max, 6704 advertising_set->periodic_params.periodic_advertising_properties); 6705 return true; 6706 } 6707 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6708 uint16_t pos = advertising_set->periodic_data_pos; 6709 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6710 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6711 if ((operation & 0x02) != 0){ 6712 // last fragment or complete data 6713 operation |= 2; 6714 advertising_set->periodic_data_pos = 0; 6715 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6716 } else { 6717 advertising_set->periodic_data_pos += data_to_upload; 6718 } 6719 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6720 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6721 return true; 6722 } 6723 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6724 } 6725 } 6726 #endif 6727 6728 #endif 6729 6730 #ifdef ENABLE_LE_CENTRAL 6731 // if connect with whitelist was active and is not cancelled yet, wait until next time 6732 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6733 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6734 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6735 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6736 #endif 6737 #endif 6738 6739 // LE Whitelist Management 6740 if (whitelist_modification_pending){ 6741 bool done = hci_whitelist_modification_process(); 6742 if (done) return true; 6743 } 6744 6745 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6746 // LE Resolving List Management 6747 if (resolving_list_modification_pending) { 6748 uint16_t i; 6749 uint8_t null_16[16]; 6750 uint8_t local_irk_flipped[16]; 6751 const uint8_t *local_irk; 6752 switch (hci_stack->le_resolving_list_state) { 6753 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6754 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6755 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6756 return true; 6757 case LE_RESOLVING_LIST_READ_SIZE: 6758 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6759 hci_send_cmd(&hci_le_read_resolving_list_size); 6760 return true; 6761 case LE_RESOLVING_LIST_SEND_CLEAR: 6762 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6763 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6764 sizeof(hci_stack->le_resolving_list_add_entries)); 6765 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6766 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6767 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6768 sizeof(hci_stack->le_resolving_list_remove_entries)); 6769 hci_send_cmd(&hci_le_clear_resolving_list); 6770 return true; 6771 case LE_RESOLVING_LIST_SET_IRK: 6772 // set IRK used by RPA for undirected advertising 6773 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6774 local_irk = gap_get_persistent_irk(); 6775 reverse_128(local_irk, local_irk_flipped); 6776 memset(null_16, 0, sizeof(null_16)); 6777 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6778 null_16, local_irk_flipped); 6779 return true; 6780 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6781 // first remove old entries 6782 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6783 uint8_t offset = i >> 3; 6784 uint8_t mask = 1 << (i & 7); 6785 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6786 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6787 bd_addr_t peer_identity_addreses; 6788 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6789 sm_key_t peer_irk; 6790 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6791 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6792 6793 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6794 // trigger whitelist entry 'update' (work around for controller bug) 6795 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6796 while (btstack_linked_list_iterator_has_next(&lit)) { 6797 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6798 if (entry->address_type != peer_identity_addr_type) continue; 6799 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6800 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6801 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6802 } 6803 #endif 6804 6805 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6806 peer_identity_addreses); 6807 return true; 6808 } 6809 6810 // then add new entries 6811 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6812 uint8_t offset = i >> 3; 6813 uint8_t mask = 1 << (i & 7); 6814 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6815 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6816 bd_addr_t peer_identity_addreses; 6817 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6818 sm_key_t peer_irk; 6819 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6820 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6821 if (btstack_is_null(peer_irk, 16)) continue; 6822 local_irk = gap_get_persistent_irk(); 6823 // command uses format specifier 'P' that stores 16-byte value without flip 6824 uint8_t peer_irk_flipped[16]; 6825 reverse_128(local_irk, local_irk_flipped); 6826 reverse_128(peer_irk, peer_irk_flipped); 6827 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6828 peer_irk_flipped, local_irk_flipped); 6829 return true; 6830 } 6831 6832 // finally, set privacy mode 6833 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6834 uint8_t offset = i >> 3; 6835 uint8_t mask = 1 << (i & 7); 6836 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6837 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6838 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6839 // Network Privacy Mode is default 6840 continue; 6841 } 6842 bd_addr_t peer_identity_address; 6843 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6844 sm_key_t peer_irk; 6845 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6846 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6847 if (btstack_is_null(peer_irk, 16)) continue; 6848 // command uses format specifier 'P' that stores 16-byte value without flip 6849 uint8_t peer_irk_flipped[16]; 6850 reverse_128(peer_irk, peer_irk_flipped); 6851 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6852 return true; 6853 } 6854 break; 6855 6856 default: 6857 break; 6858 } 6859 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6860 } 6861 #endif 6862 6863 #ifdef ENABLE_LE_CENTRAL 6864 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6865 // LE Whitelist Management 6866 if (periodic_list_modification_pending){ 6867 // add/remove entries 6868 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6869 while (btstack_linked_list_iterator_has_next(&lit)){ 6870 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6871 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6872 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6873 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6874 return true; 6875 } 6876 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6877 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6878 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6879 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6880 return true; 6881 } 6882 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6883 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6884 btstack_memory_periodic_advertiser_list_entry_free(entry); 6885 } 6886 } 6887 } 6888 #endif 6889 #endif 6890 6891 #ifdef ENABLE_LE_CENTRAL 6892 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6893 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6894 if (hci_stack->le_past_set_default_params){ 6895 hci_stack->le_past_set_default_params = false; 6896 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6897 hci_stack->le_past_mode, 6898 hci_stack->le_past_skip, 6899 hci_stack->le_past_sync_timeout, 6900 hci_stack->le_past_cte_type); 6901 return true; 6902 } 6903 #endif 6904 #endif 6905 #endif 6906 6907 // postpone all actions until stack is fully working 6908 if (hci_stack->state != HCI_STATE_WORKING) return false; 6909 6910 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6911 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6912 6913 // Phase 4: restore state 6914 6915 #ifdef ENABLE_LE_CENTRAL 6916 // re-start scanning 6917 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6918 hci_stack->le_scanning_active = true; 6919 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6920 if (hci_le_extended_advertising_supported()){ 6921 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6922 } else 6923 #endif 6924 { 6925 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6926 } 6927 return true; 6928 } 6929 #endif 6930 6931 #ifdef ENABLE_LE_CENTRAL 6932 // re-start connecting 6933 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6934 bd_addr_t null_addr; 6935 memset(null_addr, 0, 6); 6936 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6937 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6938 hci_send_le_create_connection(1, 0, null_addr); 6939 return true; 6940 } 6941 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6942 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6943 switch(hci_stack->le_periodic_sync_request){ 6944 case LE_CONNECTING_DIRECT: 6945 case LE_CONNECTING_WHITELIST: 6946 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6947 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6948 hci_stack->le_periodic_sync_options, 6949 hci_stack->le_periodic_sync_advertising_sid, 6950 hci_stack->le_periodic_sync_advertiser_address_type, 6951 hci_stack->le_periodic_sync_advertiser_address, 6952 hci_stack->le_periodic_sync_skip, 6953 hci_stack->le_periodic_sync_timeout, 6954 hci_stack->le_periodic_sync_cte_type); 6955 return true; 6956 default: 6957 break; 6958 } 6959 } 6960 #endif 6961 #endif 6962 6963 #ifdef ENABLE_LE_PERIPHERAL 6964 // re-start advertising 6965 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6966 // check if advertisements should be enabled given 6967 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6968 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6969 6970 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6971 if (hci_le_extended_advertising_supported()){ 6972 const uint8_t advertising_handles[] = { 0 }; 6973 const uint16_t durations[] = { 0 }; 6974 const uint16_t max_events[] = { 0 }; 6975 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6976 } else 6977 #endif 6978 { 6979 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6980 } 6981 return true; 6982 } 6983 6984 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6985 if (hci_le_extended_advertising_supported()) { 6986 btstack_linked_list_iterator_t it; 6987 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6988 while (btstack_linked_list_iterator_has_next(&it)) { 6989 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6990 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6991 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6992 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6993 const uint16_t durations[] = { advertising_set->enable_timeout }; 6994 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6995 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6996 return true; 6997 } 6998 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6999 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 7000 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 7001 uint8_t enable = 1; 7002 if (advertising_set->periodic_include_adi){ 7003 enable |= 2; 7004 } 7005 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 7006 return true; 7007 } 7008 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7009 } 7010 } 7011 #endif 7012 #endif 7013 7014 return false; 7015 } 7016 7017 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7018 static bool hci_run_iso_tasks(void){ 7019 btstack_linked_list_iterator_t it; 7020 7021 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 7022 return false; 7023 } 7024 7025 // BIG 7026 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 7027 while (btstack_linked_list_iterator_has_next(&it)){ 7028 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 7029 switch (big->state){ 7030 case LE_AUDIO_BIG_STATE_CREATE: 7031 hci_stack->iso_active_operation_group_id = big->params->big_handle; 7032 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7033 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7034 hci_send_cmd(&hci_le_create_big, 7035 big->params->big_handle, 7036 big->params->advertising_handle, 7037 big->params->num_bis, 7038 big->params->sdu_interval_us, 7039 big->params->max_sdu, 7040 big->params->max_transport_latency_ms, 7041 big->params->rtn, 7042 big->params->phy, 7043 big->params->packing, 7044 big->params->framing, 7045 big->params->encryption, 7046 big->params->broadcast_code); 7047 return true; 7048 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7049 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7050 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); 7051 return true; 7052 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7053 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7054 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 7055 return true; 7056 case LE_AUDIO_BIG_STATE_TERMINATE: 7057 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7058 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7059 return true; 7060 default: 7061 break; 7062 } 7063 } 7064 7065 // BIG Sync 7066 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 7067 while (btstack_linked_list_iterator_has_next(&it)){ 7068 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 7069 switch (big_sync->state){ 7070 case LE_AUDIO_BIG_STATE_CREATE: 7071 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 7072 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7073 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7074 hci_send_cmd(&hci_le_big_create_sync, 7075 big_sync->params->big_handle, 7076 big_sync->params->sync_handle, 7077 big_sync->params->encryption, 7078 big_sync->params->broadcast_code, 7079 big_sync->params->mse, 7080 big_sync->params->big_sync_timeout_10ms, 7081 big_sync->params->num_bis, 7082 big_sync->params->bis_indices); 7083 return true; 7084 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7085 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7086 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); 7087 return true; 7088 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7089 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7090 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7091 return true; 7092 case LE_AUDIO_BIG_STATE_TERMINATE: 7093 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7094 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7095 return true; 7096 default: 7097 break; 7098 } 7099 } 7100 7101 // CIG 7102 bool cig_active; 7103 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7104 while (btstack_linked_list_iterator_has_next(&it)) { 7105 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7106 uint8_t i; 7107 // Set CIG Parameters 7108 uint8_t cis_id[MAX_NR_CIS]; 7109 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7110 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7111 uint8_t phy_c_to_p[MAX_NR_CIS]; 7112 uint8_t phy_p_to_c[MAX_NR_CIS]; 7113 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7114 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7115 switch (cig->state) { 7116 case LE_AUDIO_CIG_STATE_CREATE: 7117 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7118 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7119 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7120 le_audio_cig_params_t * params = cig->params; 7121 for (i = 0; i < params->num_cis; i++) { 7122 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7123 cis_id[i] = cis_params->cis_id; 7124 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7125 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7126 phy_c_to_p[i] = cis_params->phy_c_to_p; 7127 phy_p_to_c[i] = cis_params->phy_p_to_c; 7128 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7129 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7130 } 7131 hci_send_cmd(&hci_le_set_cig_parameters, 7132 cig->cig_id, 7133 params->sdu_interval_c_to_p, 7134 params->sdu_interval_p_to_c, 7135 params->worst_case_sca, 7136 params->packing, 7137 params->framing, 7138 params->max_transport_latency_c_to_p, 7139 params->max_transport_latency_p_to_c, 7140 params->num_cis, 7141 cis_id, 7142 max_sdu_c_to_p, 7143 max_sdu_p_to_c, 7144 phy_c_to_p, 7145 phy_p_to_c, 7146 rtn_c_to_p, 7147 rtn_p_to_c 7148 ); 7149 return true; 7150 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7151 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7152 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7153 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7154 for (i=0;i<cig->num_cis;i++){ 7155 cig->cis_setup_active[i] = true; 7156 } 7157 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7158 return true; 7159 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7160 for ( ; cig->state_vars.next_cis < (cig->num_cis * 2) ; cig->state_vars.next_cis++ ){ 7161 // find next path to setup 7162 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7163 if (cig->cis_established[cis_index] == false) { 7164 continue; 7165 } 7166 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7167 bool setup = true; 7168 if (cis_direction == 0){ 7169 // 0 - input - host to controller 7170 // we are central => central to peripheral 7171 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7172 } else { 7173 // 1 - output - controller to host 7174 // we are central => peripheral to central 7175 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7176 } 7177 if (setup){ 7178 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7179 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7180 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7181 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); 7182 return true; 7183 } 7184 } 7185 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7186 break; 7187 case LE_AUDIO_CIG_STATE_REMOVE: 7188 // check if CIG Active 7189 cig_active = false; 7190 for (i = 0; i < cig->num_cis; i++) { 7191 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7192 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7193 if (stream != NULL){ 7194 cig_active = true; 7195 break; 7196 } 7197 } 7198 } 7199 if (cig_active == false){ 7200 btstack_linked_list_iterator_remove(&it); 7201 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7202 return true; 7203 } 7204 default: 7205 break; 7206 } 7207 } 7208 7209 // CIS Accept/Reject/Setup ISO Path/Close 7210 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7211 while (btstack_linked_list_iterator_has_next(&it)) { 7212 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7213 hci_con_handle_t con_handle; 7214 switch (iso_stream->state){ 7215 case HCI_ISO_STREAM_W2_ACCEPT: 7216 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7217 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7218 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7219 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7220 return true; 7221 case HCI_ISO_STREAM_W2_REJECT: 7222 con_handle = iso_stream->cis_handle; 7223 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7224 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7225 hci_iso_stream_finalize(iso_stream); 7226 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7227 return true; 7228 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7229 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7230 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7231 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7232 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); 7233 return true; 7234 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7235 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7236 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7237 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7238 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); 7239 return true; 7240 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7241 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7242 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7243 return true; 7244 default: 7245 break; 7246 } 7247 } 7248 7249 return false; 7250 } 7251 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7252 #endif 7253 7254 static bool hci_run_general_pending_commands(void){ 7255 btstack_linked_item_t * it; 7256 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7257 hci_connection_t * connection = (hci_connection_t *) it; 7258 7259 switch(connection->state){ 7260 case SEND_CREATE_CONNECTION: 7261 switch(connection->address_type){ 7262 #ifdef ENABLE_CLASSIC 7263 case BD_ADDR_TYPE_ACL: 7264 log_info("sending hci_create_connection"); 7265 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7266 break; 7267 #endif 7268 default: 7269 #ifdef ENABLE_BLE 7270 #ifdef ENABLE_LE_CENTRAL 7271 log_info("sending hci_le_create_connection"); 7272 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7273 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7274 hci_send_le_create_connection(0, connection->address_type, connection->address); 7275 connection->state = SENT_CREATE_CONNECTION; 7276 #endif 7277 #endif 7278 break; 7279 } 7280 return true; 7281 7282 #ifdef ENABLE_CLASSIC 7283 case RECEIVED_CONNECTION_REQUEST: 7284 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7285 log_info("sending hci_accept_connection_request"); 7286 connection->state = ACCEPTED_CONNECTION_REQUEST; 7287 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7288 return true; 7289 } 7290 break; 7291 #endif 7292 case SEND_DISCONNECT: 7293 connection->state = SENT_DISCONNECT; 7294 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7295 return true; 7296 7297 default: 7298 break; 7299 } 7300 7301 // no further commands if connection is about to get shut down 7302 if (connection->state == SENT_DISCONNECT) continue; 7303 7304 #ifdef ENABLE_CLASSIC 7305 7306 // Handling link key request requires remote supported features 7307 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7308 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7309 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7310 7311 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7312 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7313 if (have_link_key && security_level_sufficient){ 7314 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7315 } else { 7316 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7317 } 7318 return true; 7319 } 7320 7321 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7322 log_info("denying to pin request"); 7323 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7324 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7325 return true; 7326 } 7327 7328 // security assessment requires remote features 7329 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7330 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7331 hci_ssp_assess_security_on_io_cap_request(connection); 7332 // 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 7333 } 7334 7335 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7336 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7337 // set authentication requirements: 7338 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7339 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7340 connection->io_cap_request_auth_req = hci_stack->ssp_authentication_requirement & 1; 7341 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7342 connection->io_cap_request_auth_req |= 1; 7343 } 7344 bool bonding = hci_stack->bondable; 7345 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7346 // if we have received IO Cap Response, we're in responder role 7347 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7348 if (bonding && !remote_bonding){ 7349 log_info("Remote not bonding, dropping local flag"); 7350 bonding = false; 7351 } 7352 } 7353 if (bonding){ 7354 if (connection->bonding_flags & BONDING_DEDICATED){ 7355 connection->io_cap_request_auth_req |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7356 } else { 7357 connection->io_cap_request_auth_req |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7358 } 7359 } 7360 uint8_t have_oob_data = 0; 7361 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7362 if (connection->classic_oob_c_192 != NULL){ 7363 have_oob_data |= 1; 7364 } 7365 if (connection->classic_oob_c_256 != NULL){ 7366 have_oob_data |= 2; 7367 } 7368 #endif 7369 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, connection->io_cap_request_auth_req); 7370 return true; 7371 } 7372 7373 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7374 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7375 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7376 return true; 7377 } 7378 7379 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7380 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7381 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7382 const uint8_t zero[16] = { 0 }; 7383 const uint8_t * r_192 = zero; 7384 const uint8_t * c_192 = zero; 7385 const uint8_t * r_256 = zero; 7386 const uint8_t * c_256 = zero; 7387 // verify P-256 OOB 7388 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7389 c_256 = connection->classic_oob_c_256; 7390 if (connection->classic_oob_r_256 != NULL) { 7391 r_256 = connection->classic_oob_r_256; 7392 } 7393 } 7394 // verify P-192 OOB 7395 if ((connection->classic_oob_c_192 != NULL)) { 7396 c_192 = connection->classic_oob_c_192; 7397 if (connection->classic_oob_r_192 != NULL) { 7398 r_192 = connection->classic_oob_r_192; 7399 } 7400 } 7401 7402 // assess security 7403 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7404 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7405 if (need_level_4 && !can_reach_level_4){ 7406 log_info("Level 4 required, but not possible -> abort"); 7407 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7408 // send oob negative reply 7409 c_256 = NULL; 7410 c_192 = NULL; 7411 } 7412 7413 // Reply 7414 if (c_256 != zero) { 7415 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7416 } else if (c_192 != zero){ 7417 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7418 } else { 7419 hci_stack->classic_oob_con_handle = connection->con_handle; 7420 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7421 } 7422 return true; 7423 } 7424 #endif 7425 7426 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7427 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7428 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7429 return true; 7430 } 7431 7432 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7433 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7434 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7435 return true; 7436 } 7437 7438 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7439 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7440 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7441 return true; 7442 } 7443 7444 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7445 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7446 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7447 connection->state = SENT_DISCONNECT; 7448 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7449 return true; 7450 } 7451 7452 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7453 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7454 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7455 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7456 return true; 7457 } 7458 7459 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7460 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7461 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7462 return true; 7463 } 7464 7465 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7466 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7467 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7468 return true; 7469 } 7470 7471 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7472 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7473 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7474 return true; 7475 } 7476 7477 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7478 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7479 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7480 return true; 7481 } 7482 7483 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7484 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7485 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7486 return true; 7487 } 7488 #endif 7489 7490 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7491 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7492 #ifdef ENABLE_CLASSIC 7493 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7494 #endif 7495 if (connection->state != SENT_DISCONNECT){ 7496 connection->state = SENT_DISCONNECT; 7497 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7498 return true; 7499 } 7500 } 7501 7502 #ifdef ENABLE_CLASSIC 7503 uint16_t sniff_min_interval; 7504 switch (connection->sniff_min_interval){ 7505 case 0: 7506 break; 7507 case 0xffff: 7508 connection->sniff_min_interval = 0; 7509 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7510 return true; 7511 default: 7512 sniff_min_interval = connection->sniff_min_interval; 7513 connection->sniff_min_interval = 0; 7514 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7515 return true; 7516 } 7517 7518 if (connection->sniff_subrating_max_latency != 0xffff){ 7519 uint16_t max_latency = connection->sniff_subrating_max_latency; 7520 connection->sniff_subrating_max_latency = 0; 7521 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7522 return true; 7523 } 7524 7525 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7526 uint8_t service_type = (uint8_t) connection->qos_service_type; 7527 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7528 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); 7529 return true; 7530 } 7531 7532 if (connection->request_role != HCI_ROLE_INVALID){ 7533 hci_role_t role = connection->request_role; 7534 connection->request_role = HCI_ROLE_INVALID; 7535 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7536 return true; 7537 } 7538 #endif 7539 7540 if (connection->gap_connection_tasks != 0){ 7541 #ifdef ENABLE_CLASSIC 7542 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7543 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7544 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7545 return true; 7546 } 7547 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7548 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7549 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7550 return true; 7551 } 7552 #endif 7553 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7554 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7555 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7556 return true; 7557 } 7558 #ifdef ENABLE_BLE 7559 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7560 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7561 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7562 return true; 7563 } 7564 #endif 7565 } 7566 7567 #ifdef ENABLE_BLE 7568 switch (connection->le_con_parameter_update_state){ 7569 // response to L2CAP CON PARAMETER UPDATE REQUEST 7570 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7571 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7572 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7573 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7574 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7575 return true; 7576 case CON_PARAMETER_UPDATE_REPLY: 7577 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7578 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7579 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7580 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7581 return true; 7582 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7583 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7584 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7585 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7586 return true; 7587 default: 7588 break; 7589 } 7590 if (connection->le_phy_update_all_phys != 0xffu){ 7591 uint8_t all_phys = connection->le_phy_update_all_phys; 7592 connection->le_phy_update_all_phys = 0xff; 7593 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); 7594 return true; 7595 } 7596 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7597 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7598 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7599 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7600 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7601 return true; 7602 } 7603 if (connection->le_past_advertising_handle != 0xff){ 7604 uint8_t advertising_handle = connection->le_past_advertising_handle; 7605 connection->le_past_advertising_handle = 0xff; 7606 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7607 return true; 7608 } 7609 #endif 7610 #endif 7611 } 7612 return false; 7613 } 7614 7615 static void hci_run(void){ 7616 7617 // stack state sub statemachines 7618 switch (hci_stack->state) { 7619 case HCI_STATE_INITIALIZING: 7620 hci_initializing_run(); 7621 break; 7622 case HCI_STATE_HALTING: 7623 hci_halting_run(); 7624 break; 7625 case HCI_STATE_FALLING_ASLEEP: 7626 hci_falling_asleep_run(); 7627 break; 7628 default: 7629 break; 7630 } 7631 7632 // allow to run after initialization to working transition 7633 if (hci_stack->state != HCI_STATE_WORKING){ 7634 return; 7635 } 7636 7637 bool done; 7638 7639 // send continuation fragments first, as they block the prepared packet buffer 7640 done = hci_run_acl_fragments(); 7641 if (done) return; 7642 7643 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7644 done = hci_run_iso_fragments(); 7645 if (done) return; 7646 #endif 7647 7648 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7649 // send host num completed packets next as they don't require num_cmd_packets > 0 7650 if (!hci_can_send_command_packet_transport()) return; 7651 if (hci_stack->host_completed_packets){ 7652 hci_host_num_completed_packets(); 7653 return; 7654 } 7655 #endif 7656 7657 if (!hci_can_send_command_packet_now()) return; 7658 7659 // global/non-connection oriented commands 7660 7661 7662 #ifdef ENABLE_CLASSIC 7663 // general gap classic 7664 done = hci_run_general_gap_classic(); 7665 if (done) return; 7666 #endif 7667 7668 #ifdef ENABLE_BLE 7669 // general gap le 7670 done = hci_run_general_gap_le(); 7671 if (done) return; 7672 7673 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7674 // ISO related tasks, e.g. BIG create/terminate/sync 7675 done = hci_run_iso_tasks(); 7676 if (done) return; 7677 #endif 7678 #endif 7679 7680 // send pending HCI commands 7681 hci_run_general_pending_commands(); 7682 } 7683 7684 #ifdef ENABLE_CLASSIC 7685 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7686 // bits 6-9 are 'don't use' 7687 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7688 7689 // restrict packet types to local and remote supported 7690 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7691 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7692 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7693 } 7694 #endif 7695 7696 // funnel for sending cmd packet using single outgoing buffer 7697 static uint8_t hci_send_prepared_cmd_packet(void) { 7698 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7699 // cache opcode 7700 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7701 // get size 7702 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7703 // send packet 7704 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7705 // release packet buffer on error or for synchronous transport implementations 7706 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7707 hci_release_packet_buffer(); 7708 } 7709 return status; 7710 } 7711 7712 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7713 // house-keeping 7714 7715 #ifdef ENABLE_CLASSIC 7716 bd_addr_t addr; 7717 hci_connection_t * conn; 7718 #endif 7719 #ifdef ENABLE_LE_CENTRAL 7720 uint8_t initiator_filter_policy; 7721 #endif 7722 7723 uint16_t opcode = little_endian_read_16(packet, 0); 7724 switch (opcode) { 7725 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7726 hci_stack->loopback_mode = packet[3]; 7727 break; 7728 7729 #ifdef ENABLE_CLASSIC 7730 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7731 reverse_bd_addr(&packet[3], addr); 7732 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7733 7734 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7735 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7736 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7737 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7738 } 7739 7740 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7741 if (!conn) { 7742 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7743 if (!conn) { 7744 // notify client that alloc failed 7745 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7746 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7747 } 7748 conn->state = SEND_CREATE_CONNECTION; 7749 } 7750 7751 log_info("conn state %u", conn->state); 7752 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7753 switch (conn->state) { 7754 // if connection active exists 7755 case OPEN: 7756 // and OPEN, emit connection complete command 7757 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7758 // packet not sent to controller 7759 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7760 case RECEIVED_DISCONNECTION_COMPLETE: 7761 // create connection triggered in disconnect complete event, let's do it now 7762 break; 7763 case SEND_CREATE_CONNECTION: 7764 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7765 if (hci_classic_operation_active()){ 7766 return ERROR_CODE_SUCCESS; 7767 } 7768 #endif 7769 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7770 break; 7771 default: 7772 // otherwise, just ignore as it is already in the open process 7773 // packet not sent to controller 7774 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7775 } 7776 conn->state = SENT_CREATE_CONNECTION; 7777 7778 // track outgoing connection 7779 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7780 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7781 break; 7782 7783 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7784 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7785 if (conn == NULL) { 7786 // neither SCO nor ACL connection for con handle 7787 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7788 } else { 7789 uint16_t remote_supported_sco_packets; 7790 switch (conn->address_type){ 7791 case BD_ADDR_TYPE_ACL: 7792 // assert SCO connection does not exit 7793 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7794 return ERROR_CODE_COMMAND_DISALLOWED; 7795 } 7796 // cache remote sco packet types 7797 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7798 7799 // allocate connection struct 7800 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7801 HCI_ROLE_MASTER); 7802 if (!conn) { 7803 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7804 } 7805 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7806 break; 7807 case BD_ADDR_TYPE_SCO: 7808 // update of existing SCO connection 7809 break; 7810 default: 7811 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7812 } 7813 } 7814 7815 // conn refers to hci connection of type sco now 7816 7817 conn->state = SENT_CREATE_CONNECTION; 7818 7819 // track outgoing connection to handle command status with error 7820 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7821 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7822 7823 // setup_synchronous_connection? Voice setting at offset 22 7824 // TODO: compare to current setting if sco connection already active 7825 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7826 7827 // derive sco payload length from packet types 7828 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7829 break; 7830 7831 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7832 // get SCO connection 7833 reverse_bd_addr(&packet[3], addr); 7834 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7835 if (conn == NULL){ 7836 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7837 } 7838 7839 conn->state = ACCEPTED_CONNECTION_REQUEST; 7840 7841 // track outgoing connection to handle command status with error 7842 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7843 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7844 7845 // accept_synchronous_connection? Voice setting at offset 18 7846 // TODO: compare to current setting if sco connection already active 7847 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7848 7849 // derive sco payload length from packet types 7850 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7851 break; 7852 #endif 7853 7854 #ifdef ENABLE_BLE 7855 #ifdef ENABLE_LE_CENTRAL 7856 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7857 // white list used? 7858 initiator_filter_policy = packet[7]; 7859 switch (initiator_filter_policy) { 7860 case 0: 7861 // whitelist not used 7862 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7863 break; 7864 case 1: 7865 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7866 break; 7867 default: 7868 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7869 break; 7870 } 7871 // track outgoing connection 7872 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7873 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7874 break; 7875 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7876 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7877 // white list used? 7878 initiator_filter_policy = packet[3]; 7879 switch (initiator_filter_policy) { 7880 case 0: 7881 // whitelist not used 7882 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7883 break; 7884 case 1: 7885 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7886 break; 7887 default: 7888 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7889 break; 7890 } 7891 // track outgoing connection 7892 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7893 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7894 break; 7895 #endif 7896 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7897 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7898 break; 7899 #endif 7900 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7901 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7902 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7903 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7904 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7905 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7906 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7907 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7908 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7909 case HCI_OPCODE_HCI_LE_READ_PHY: 7910 case HCI_OPCODE_HCI_LE_SET_PHY: 7911 // conection handle is first command parameter 7912 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7913 break; 7914 #endif 7915 #endif /* ENABLE_BLE */ 7916 default: 7917 break; 7918 } 7919 7920 hci_stack->num_cmd_packets--; 7921 7922 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7923 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7924 uint8_t status; 7925 if (err == 0){ 7926 status = ERROR_CODE_SUCCESS; 7927 } else { 7928 status = ERROR_CODE_HARDWARE_FAILURE; 7929 } 7930 return status; 7931 } 7932 7933 // disconnect because of security block 7934 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7935 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7936 if (!connection) return; 7937 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7938 } 7939 7940 7941 // Configure Secure Simple Pairing 7942 7943 #ifdef ENABLE_CLASSIC 7944 7945 // enable will enable SSP during init 7946 void gap_ssp_set_enable(int enable){ 7947 hci_stack->ssp_enable = enable; 7948 } 7949 7950 static int hci_local_ssp_activated(void){ 7951 return gap_ssp_supported() && hci_stack->ssp_enable; 7952 } 7953 7954 // if set, BTstack will respond to io capability request using authentication requirement 7955 void gap_ssp_set_io_capability(int io_capability){ 7956 hci_stack->ssp_io_capability = io_capability; 7957 } 7958 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7959 hci_stack->ssp_authentication_requirement = authentication_requirement; 7960 } 7961 7962 // if set, BTstack will confirm a numeric comparison and enter '000000' if requested 7963 void gap_ssp_set_auto_accept(int auto_accept){ 7964 hci_stack->ssp_auto_accept = auto_accept; 7965 } 7966 7967 void gap_secure_connections_enable(bool enable){ 7968 hci_stack->secure_connections_enable = enable; 7969 } 7970 bool gap_secure_connections_active(void){ 7971 return hci_stack->secure_connections_active; 7972 } 7973 7974 #endif 7975 7976 // va_list part of hci_send_cmd 7977 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7978 if (!hci_can_send_command_packet_now()){ 7979 log_error("hci_send_cmd called but cannot send packet now"); 7980 return ERROR_CODE_COMMAND_DISALLOWED; 7981 } 7982 7983 hci_reserve_packet_buffer(); 7984 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7985 return hci_send_prepared_cmd_packet(); 7986 } 7987 7988 /** 7989 * pre: num_commands >= 0 - it's allowed to send a command to the controller 7990 */ 7991 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7992 va_list argptr; 7993 va_start(argptr, cmd); 7994 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7995 va_end(argptr); 7996 return status; 7997 } 7998 7999 // Forward HCI events and create non-HCI events 8000 8001 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 8002 // dump packet 8003 if (dump) { 8004 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 8005 } 8006 8007 // dispatch to all event handlers 8008 btstack_linked_list_iterator_t it; 8009 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 8010 while (btstack_linked_list_iterator_has_next(&it)){ 8011 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 8012 entry->callback(HCI_EVENT_PACKET, 0, event, size); 8013 } 8014 } 8015 8016 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump){ 8017 #ifndef ENABLE_LOG_BTSTACK_EVENTS 8018 dump = 0; 8019 #endif 8020 hci_emit_event(event, size, dump); 8021 } 8022 8023 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 8024 if (!hci_stack->acl_packet_handler) return; 8025 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 8026 } 8027 8028 #ifdef ENABLE_CLASSIC 8029 static void hci_notify_if_sco_can_send_now(void){ 8030 // notify SCO sender if waiting 8031 if (!hci_stack->sco_waiting_for_can_send_now) return; 8032 if (hci_can_send_sco_packet_now()){ 8033 hci_stack->sco_waiting_for_can_send_now = 0; 8034 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 8035 hci_dump_btstack_event(event, sizeof(event)); 8036 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 8037 } 8038 } 8039 8040 // parsing end emitting has been merged to reduce code size 8041 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 8042 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 8043 8044 uint8_t * eir_data; 8045 ad_context_t context; 8046 const uint8_t * name; 8047 uint8_t name_len; 8048 8049 if (size < 3) return; 8050 8051 int event_type = hci_event_packet_get_type(packet); 8052 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 8053 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 8054 8055 switch (event_type){ 8056 case HCI_EVENT_INQUIRY_RESULT: 8057 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8058 if (size != (3 + (num_responses * 14))) return; 8059 break; 8060 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8061 if (size != 257) return; 8062 if (num_responses != 1) return; 8063 break; 8064 default: 8065 return; 8066 } 8067 8068 // event[1] is set at the end 8069 int i; 8070 for (i=0; i<num_responses;i++){ 8071 memset(event, 0, sizeof(event)); 8072 event[0] = GAP_EVENT_INQUIRY_RESULT; 8073 uint8_t event_size = 27; // if name is not set by EIR 8074 8075 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 8076 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 8077 (void)memcpy(&event[9], 8078 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 8079 3); // class of device 8080 (void)memcpy(&event[12], 8081 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 8082 2); // clock offset 8083 8084 switch (event_type){ 8085 case HCI_EVENT_INQUIRY_RESULT: 8086 // 14,15,16,17 = 0, size 18 8087 break; 8088 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8089 event[14] = 1; 8090 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8091 // 16,17 = 0, size 18 8092 break; 8093 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8094 event[14] = 1; 8095 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8096 // EIR packets only contain a single inquiry response 8097 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8098 name = NULL; 8099 // Iterate over EIR data 8100 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8101 uint8_t data_type = ad_iterator_get_data_type(&context); 8102 uint8_t data_size = ad_iterator_get_data_len(&context); 8103 const uint8_t * data = ad_iterator_get_data(&context); 8104 // Prefer Complete Local Name over Shortened Local Name 8105 switch (data_type){ 8106 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8107 if (name) continue; 8108 /* fall through */ 8109 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8110 name = data; 8111 name_len = data_size; 8112 break; 8113 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8114 if (data_size != 8) break; 8115 event[16] = 1; 8116 memcpy(&event[17], data, 8); 8117 break; 8118 default: 8119 break; 8120 } 8121 } 8122 if (name){ 8123 event[25] = 1; 8124 // truncate name if needed 8125 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8126 event[26] = len; 8127 (void)memcpy(&event[27], name, len); 8128 event_size += len; 8129 } 8130 break; 8131 default: 8132 return; 8133 } 8134 event[1] = event_size - 2; 8135 hci_emit_btstack_event(event, event_size, 1); 8136 } 8137 } 8138 #endif 8139 8140 void hci_emit_state(void){ 8141 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8142 uint8_t event[3]; 8143 event[0] = BTSTACK_EVENT_STATE; 8144 event[1] = sizeof(event) - 2u; 8145 event[2] = hci_stack->state; 8146 hci_emit_btstack_event(event, sizeof(event), 1); 8147 } 8148 8149 #ifdef ENABLE_CLASSIC 8150 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8151 uint8_t event[13]; 8152 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8153 event[1] = sizeof(event) - 2; 8154 event[2] = status; 8155 little_endian_store_16(event, 3, con_handle); 8156 reverse_bd_addr(address, &event[5]); 8157 event[11] = 1; // ACL connection 8158 event[12] = 0; // encryption disabled 8159 hci_emit_btstack_event(event, sizeof(event), 1); 8160 } 8161 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8162 if (disable_l2cap_timeouts) return; 8163 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8164 uint8_t event[4]; 8165 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8166 event[1] = sizeof(event) - 2; 8167 little_endian_store_16(event, 2, conn->con_handle); 8168 hci_emit_btstack_event(event, sizeof(event), 1); 8169 } 8170 #endif 8171 8172 #ifdef ENABLE_BLE 8173 #ifdef ENABLE_LE_CENTRAL 8174 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){ 8175 uint8_t hci_event[21]; 8176 hci_event[0] = HCI_EVENT_LE_META; 8177 hci_event[1] = sizeof(hci_event) - 2u; 8178 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8179 hci_event[3] = status; 8180 little_endian_store_16(hci_event, 4, con_handle); 8181 hci_event[6] = 0; // TODO: role 8182 hci_event[7] = address_type; 8183 reverse_bd_addr(address, &hci_event[8]); 8184 little_endian_store_16(hci_event, 14, 0); // interval 8185 little_endian_store_16(hci_event, 16, 0); // latency 8186 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8187 hci_event[20] = 0; // master clock accuracy 8188 hci_emit_btstack_event(hci_event, sizeof(hci_event), 1); 8189 // emit GAP event, too 8190 uint8_t gap_event[36]; 8191 hci_create_gap_connection_complete_event(hci_event, gap_event); 8192 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 8193 } 8194 #endif 8195 #endif 8196 8197 static void hci_emit_transport_packet_sent(void){ 8198 // notify upper stack that it might be possible to send again 8199 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8200 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 8201 } 8202 8203 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8204 uint8_t event[6]; 8205 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8206 event[1] = sizeof(event) - 2u; 8207 event[2] = 0; // status = OK 8208 little_endian_store_16(event, 3, con_handle); 8209 event[5] = reason; 8210 hci_emit_btstack_event(event, sizeof(event), 1); 8211 } 8212 8213 static void hci_emit_nr_connections_changed(void){ 8214 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8215 uint8_t event[3]; 8216 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8217 event[1] = sizeof(event) - 2u; 8218 event[2] = nr_hci_connections(); 8219 hci_emit_btstack_event(event, sizeof(event), 1); 8220 } 8221 8222 static void hci_emit_hci_open_failed(void){ 8223 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8224 uint8_t event[2]; 8225 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8226 event[1] = sizeof(event) - 2u; 8227 hci_emit_btstack_event(event, sizeof(event), 1); 8228 } 8229 8230 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8231 log_info("hci_emit_dedicated_bonding_result %u ", status); 8232 uint8_t event[9]; 8233 int pos = 0; 8234 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8235 event[pos++] = sizeof(event) - 2u; 8236 event[pos++] = status; 8237 reverse_bd_addr(address, &event[pos]); 8238 hci_emit_btstack_event(event, sizeof(event), 1); 8239 } 8240 8241 8242 #ifdef ENABLE_CLASSIC 8243 8244 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8245 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8246 uint8_t event[5]; 8247 int pos = 0; 8248 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8249 event[pos++] = sizeof(event) - 2; 8250 little_endian_store_16(event, 2, con_handle); 8251 pos += 2; 8252 event[pos++] = level; 8253 hci_emit_btstack_event(event, sizeof(event), 1); 8254 } 8255 8256 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8257 if (!connection) return LEVEL_0; 8258 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8259 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8260 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8261 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8262 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8263 // LEVEL 4 always requires 128 bit encryption key size 8264 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8265 security_level = LEVEL_3; 8266 } 8267 return security_level; 8268 } 8269 8270 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8271 uint8_t event[4]; 8272 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8273 event[1] = sizeof(event) - 2; 8274 event[2] = discoverable; 8275 event[3] = connectable; 8276 hci_emit_btstack_event(event, sizeof(event), 1); 8277 } 8278 8279 // query if remote side supports eSCO 8280 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8281 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8282 if (!connection) return false; 8283 return (connection->remote_supported_features[0] & 1) != 0; 8284 } 8285 8286 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8287 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8288 if (!connection) return 0; 8289 return connection->remote_supported_sco_packets; 8290 } 8291 8292 static bool hci_ssp_supported(hci_connection_t * connection){ 8293 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8294 return (connection->bonding_flags & mask) == mask; 8295 } 8296 8297 // query if remote side supports SSP 8298 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8299 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8300 if (!connection) return false; 8301 return hci_ssp_supported(connection) ? 1 : 0; 8302 } 8303 8304 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8305 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8306 } 8307 8308 /** 8309 * Check if remote supported features query has completed 8310 */ 8311 bool hci_remote_features_available(hci_con_handle_t handle){ 8312 hci_connection_t * connection = hci_connection_for_handle(handle); 8313 if (!connection) return false; 8314 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8315 } 8316 8317 /** 8318 * Trigger remote supported features query 8319 */ 8320 8321 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8322 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8323 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8324 } 8325 } 8326 8327 void hci_remote_features_query(hci_con_handle_t con_handle){ 8328 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8329 if (!connection) return; 8330 hci_trigger_remote_features_for_connection(connection); 8331 hci_run(); 8332 } 8333 8334 // GAP API 8335 /** 8336 * @bbrief enable/disable bonding. default is enabled 8337 * @praram enabled 8338 */ 8339 void gap_set_bondable_mode(int enable){ 8340 hci_stack->bondable = enable ? 1 : 0; 8341 } 8342 /** 8343 * @brief Get bondable mode. 8344 * @return 1 if bondable 8345 */ 8346 int gap_get_bondable_mode(void){ 8347 return hci_stack->bondable; 8348 } 8349 8350 /** 8351 * @brief map link keys to security levels 8352 */ 8353 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8354 switch (link_key_type){ 8355 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8356 return LEVEL_4; 8357 case COMBINATION_KEY: 8358 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8359 return LEVEL_3; 8360 default: 8361 return LEVEL_2; 8362 } 8363 } 8364 8365 /** 8366 * @brief map link keys to secure connection yes/no 8367 */ 8368 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8369 switch (link_key_type){ 8370 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8371 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8372 return true; 8373 default: 8374 return false; 8375 } 8376 } 8377 8378 /** 8379 * @brief map link keys to authenticated 8380 */ 8381 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8382 switch (link_key_type){ 8383 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8384 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8385 return true; 8386 default: 8387 return false; 8388 } 8389 } 8390 8391 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8392 log_info("gap_mitm_protection_required_for_security_level %u", level); 8393 return level > LEVEL_2; 8394 } 8395 8396 /** 8397 * @brief get current security level 8398 */ 8399 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8400 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8401 if (!connection) return LEVEL_0; 8402 return gap_security_level_for_connection(connection); 8403 } 8404 8405 /** 8406 * @brief request connection to device to 8407 * @result GAP_AUTHENTICATION_RESULT 8408 */ 8409 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8410 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8411 if (!connection){ 8412 hci_emit_security_level(con_handle, LEVEL_0); 8413 return; 8414 } 8415 8416 btstack_assert(hci_is_le_connection(connection) == false); 8417 8418 // 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) 8419 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8420 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8421 requested_level = LEVEL_4; 8422 } 8423 8424 gap_security_level_t current_level = gap_security_level(con_handle); 8425 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8426 requested_level, connection->requested_security_level, current_level); 8427 8428 // authentication active if authentication request was sent or planned level > 0 8429 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8430 if (authentication_active){ 8431 // authentication already active 8432 if (connection->requested_security_level < requested_level){ 8433 // increase requested level as new level is higher 8434 // TODO: handle re-authentication when done 8435 connection->requested_security_level = requested_level; 8436 } 8437 } else { 8438 // no request active, notify if security sufficient 8439 if (requested_level <= current_level){ 8440 hci_emit_security_level(con_handle, current_level); 8441 return; 8442 } 8443 8444 // store request 8445 connection->requested_security_level = requested_level; 8446 8447 // start to authenticate connection 8448 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8449 8450 // request remote features if not already active, also trigger hci_run 8451 hci_remote_features_query(con_handle); 8452 } 8453 } 8454 8455 /** 8456 * @brief start dedicated bonding with device. disconnect after bonding 8457 * @param device 8458 * @param request MITM protection 8459 * @result GAP_DEDICATED_BONDING_COMPLETE 8460 */ 8461 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8462 8463 // create connection state machine 8464 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8465 8466 if (!connection){ 8467 return BTSTACK_MEMORY_ALLOC_FAILED; 8468 } 8469 8470 // delete link key 8471 gap_drop_link_key_for_bd_addr(device); 8472 8473 // configure LEVEL_2/3, dedicated bonding 8474 connection->state = SEND_CREATE_CONNECTION; 8475 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8476 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8477 connection->bonding_flags = BONDING_DEDICATED; 8478 8479 hci_run(); 8480 8481 return 0; 8482 } 8483 8484 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8485 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8486 if (connection == NULL){ 8487 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8488 } 8489 if (defer){ 8490 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8491 } else { 8492 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8493 // trigger disconnect 8494 hci_run(); 8495 } 8496 return ERROR_CODE_SUCCESS; 8497 } 8498 8499 void gap_set_local_name(const char * local_name){ 8500 hci_stack->local_name = local_name; 8501 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8502 // also update EIR if not set by user 8503 if (hci_stack->eir_data == NULL){ 8504 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8505 } 8506 hci_run(); 8507 } 8508 #endif 8509 8510 8511 #ifdef ENABLE_BLE 8512 8513 #ifdef ENABLE_LE_CENTRAL 8514 void gap_start_scan(void){ 8515 hci_stack->le_scanning_enabled = true; 8516 hci_run(); 8517 } 8518 8519 void gap_stop_scan(void){ 8520 hci_stack->le_scanning_enabled = false; 8521 hci_run(); 8522 } 8523 8524 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8525 hci_stack->le_scan_type = scan_type; 8526 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8527 hci_stack->le_scan_interval = scan_interval; 8528 hci_stack->le_scan_window = scan_window; 8529 hci_stack->le_scanning_param_update = true; 8530 hci_run(); 8531 } 8532 8533 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8534 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8535 } 8536 8537 void gap_set_scan_duplicate_filter(bool enabled){ 8538 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8539 } 8540 8541 void gap_set_scan_phys(uint8_t phys){ 8542 // LE Coded and LE 1M PHY 8543 hci_stack->le_scan_phys = phys & 0x05; 8544 } 8545 8546 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8547 // disallow le connection if outgoing already active 8548 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8549 log_error("le connect already active"); 8550 return ERROR_CODE_COMMAND_DISALLOWED; 8551 } 8552 8553 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8554 if (conn == NULL) { 8555 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8556 if (conn == NULL){ 8557 // alloc failed 8558 log_info("gap_connect: failed to alloc hci_connection_t"); 8559 return BTSTACK_MEMORY_ALLOC_FAILED; 8560 } 8561 } else { 8562 switch (conn->state) { 8563 case RECEIVED_DISCONNECTION_COMPLETE: 8564 // connection was just disconnected, reset state and allow re-connect 8565 conn->role = HCI_ROLE_MASTER; 8566 break; 8567 default: 8568 return ERROR_CODE_COMMAND_DISALLOWED; 8569 } 8570 } 8571 8572 // set le connecting state 8573 if (hci_is_le_connection_type(addr_type)){ 8574 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8575 } 8576 8577 // trigger connect 8578 log_info("gap_connect: send create connection next"); 8579 conn->state = SEND_CREATE_CONNECTION; 8580 hci_run(); 8581 return ERROR_CODE_SUCCESS; 8582 } 8583 8584 // @assumption: only a single outgoing LE Connection exists 8585 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8586 btstack_linked_item_t *it; 8587 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8588 hci_connection_t * conn = (hci_connection_t *) it; 8589 if (hci_is_le_connection(conn)){ 8590 switch (conn->state){ 8591 case SEND_CREATE_CONNECTION: 8592 case SENT_CREATE_CONNECTION: 8593 return conn; 8594 default: 8595 break; 8596 }; 8597 } 8598 } 8599 return NULL; 8600 } 8601 8602 uint8_t gap_connect_cancel(void){ 8603 hci_connection_t * conn; 8604 switch (hci_stack->le_connecting_request){ 8605 case LE_CONNECTING_IDLE: 8606 break; 8607 case LE_CONNECTING_WHITELIST: 8608 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8609 hci_run(); 8610 break; 8611 case LE_CONNECTING_DIRECT: 8612 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8613 conn = gap_get_outgoing_le_connection(); 8614 if (conn == NULL){ 8615 hci_run(); 8616 } else { 8617 switch (conn->state){ 8618 case SEND_CREATE_CONNECTION: 8619 // skip sending create connection and emit event instead 8620 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8621 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8622 btstack_memory_hci_connection_free( conn ); 8623 break; 8624 case SENT_CREATE_CONNECTION: 8625 // let hci_run_general_gap_le cancel outgoing connection 8626 hci_run(); 8627 break; 8628 default: 8629 break; 8630 } 8631 } 8632 break; 8633 default: 8634 btstack_unreachable(); 8635 break; 8636 } 8637 return ERROR_CODE_SUCCESS; 8638 } 8639 8640 /** 8641 * @brief Set connection parameters for outgoing connections 8642 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8643 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8644 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8645 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8646 * @param conn_latency, default: 4 8647 * @param supervision_timeout (unit: 10ms), default: 720 ms 8648 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8649 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8650 */ 8651 8652 void gap_set_connection_phys(uint8_t phys){ 8653 // LE Coded, LE 1M, LE 2M PHY 8654 hci_stack->le_connection_phys = phys & 7; 8655 } 8656 8657 #endif 8658 8659 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8660 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8661 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8662 hci_stack->le_connection_scan_interval = conn_scan_interval; 8663 hci_stack->le_connection_scan_window = conn_scan_window; 8664 hci_stack->le_connection_interval_min = conn_interval_min; 8665 hci_stack->le_connection_interval_max = conn_interval_max; 8666 hci_stack->le_connection_latency = conn_latency; 8667 hci_stack->le_supervision_timeout = supervision_timeout; 8668 hci_stack->le_minimum_ce_length = min_ce_length; 8669 hci_stack->le_maximum_ce_length = max_ce_length; 8670 } 8671 8672 /** 8673 * @brief Updates the connection parameters for a given LE connection 8674 * @param handle 8675 * @param conn_interval_min (unit: 1.25ms) 8676 * @param conn_interval_max (unit: 1.25ms) 8677 * @param conn_latency 8678 * @param supervision_timeout (unit: 10ms) 8679 * @return 0 if ok 8680 */ 8681 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8682 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8683 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8684 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8685 connection->le_conn_interval_min = conn_interval_min; 8686 connection->le_conn_interval_max = conn_interval_max; 8687 connection->le_conn_latency = conn_latency; 8688 connection->le_supervision_timeout = supervision_timeout; 8689 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8690 hci_run(); 8691 return 0; 8692 } 8693 8694 /** 8695 * @brief Request an update of the connection parameter for a given LE connection 8696 * @param handle 8697 * @param conn_interval_min (unit: 1.25ms) 8698 * @param conn_interval_max (unit: 1.25ms) 8699 * @param conn_latency 8700 * @param supervision_timeout (unit: 10ms) 8701 * @return 0 if ok 8702 */ 8703 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8704 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8705 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8706 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8707 connection->le_conn_interval_min = conn_interval_min; 8708 connection->le_conn_interval_max = conn_interval_max; 8709 connection->le_conn_latency = conn_latency; 8710 connection->le_supervision_timeout = supervision_timeout; 8711 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8712 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8713 hci_emit_btstack_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8714 return 0; 8715 } 8716 8717 #ifdef ENABLE_LE_PERIPHERAL 8718 8719 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8720 static void hci_assert_advertisement_set_0_ready(void){ 8721 // force advertising set creation for legacy LE Advertising 8722 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8723 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8724 } 8725 } 8726 #endif 8727 8728 /** 8729 * @brief Set Advertisement Data 8730 * @param advertising_data_length 8731 * @param advertising_data (max 31 octets) 8732 * @note data is not copied, pointer has to stay valid 8733 */ 8734 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8735 hci_stack->le_advertisements_data_len = advertising_data_length; 8736 hci_stack->le_advertisements_data = advertising_data; 8737 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8738 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8739 hci_assert_advertisement_set_0_ready(); 8740 #endif 8741 hci_run(); 8742 } 8743 8744 /** 8745 * @brief Set Scan Response Data 8746 * @param advertising_data_length 8747 * @param advertising_data (max 31 octets) 8748 * @note data is not copied, pointer has to stay valid 8749 */ 8750 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8751 hci_stack->le_scan_response_data_len = scan_response_data_length; 8752 hci_stack->le_scan_response_data = scan_response_data; 8753 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8754 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8755 hci_assert_advertisement_set_0_ready(); 8756 #endif 8757 hci_run(); 8758 } 8759 8760 /** 8761 * @brief Set Advertisement Parameters 8762 * @param adv_int_min 8763 * @param adv_int_max 8764 * @param adv_type 8765 * @param direct_address_type 8766 * @param direct_address 8767 * @param channel_map 8768 * @param filter_policy 8769 * 8770 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8771 */ 8772 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8773 uint8_t direct_address_typ, bd_addr_t direct_address, 8774 uint8_t channel_map, uint8_t filter_policy) { 8775 8776 hci_stack->le_advertisements_interval_min = adv_int_min; 8777 hci_stack->le_advertisements_interval_max = adv_int_max; 8778 hci_stack->le_advertisements_type = adv_type; 8779 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8780 hci_stack->le_advertisements_channel_map = channel_map; 8781 hci_stack->le_advertisements_filter_policy = filter_policy; 8782 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8783 6); 8784 8785 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8786 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8787 hci_run(); 8788 } 8789 8790 /** 8791 * @brief Enable/Disable Advertisements 8792 * @param enabled 8793 */ 8794 void gap_advertisements_enable(int enabled){ 8795 if (enabled == 0){ 8796 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8797 } else { 8798 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8799 } 8800 hci_update_advertisements_enabled_for_current_roles(); 8801 hci_run(); 8802 } 8803 8804 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8805 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8806 btstack_linked_list_iterator_t it; 8807 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8808 while (btstack_linked_list_iterator_has_next(&it)){ 8809 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8810 if ( item->advertising_handle == advertising_handle ) { 8811 return item; 8812 } 8813 } 8814 return NULL; 8815 } 8816 8817 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8818 hci_stack->le_resolvable_private_address_update_s = update_s; 8819 hci_run(); 8820 return ERROR_CODE_SUCCESS; 8821 } 8822 8823 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8824 // find free advertisement handle. we use LE_EXTENDED_ADVERTISING_LEGACY_HANDLE for non-extended advertising 8825 uint8_t advertisement_handle; 8826 for (advertisement_handle = LE_EXTENDED_ADVERTISING_LEGACY_HANDLE + 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8827 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8828 } 8829 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8830 // clear 8831 memset(storage, 0, sizeof(le_advertising_set_t)); 8832 // copy params 8833 storage->advertising_handle = advertisement_handle; 8834 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8835 // add to list 8836 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8837 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8838 *out_advertising_handle = advertisement_handle; 8839 // set tasks and start 8840 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8841 hci_run(); 8842 return ERROR_CODE_SUCCESS; 8843 } 8844 8845 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8846 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8847 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8848 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8849 // set tasks and start 8850 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8851 hci_run(); 8852 return ERROR_CODE_SUCCESS; 8853 } 8854 8855 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 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_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8859 return ERROR_CODE_SUCCESS; 8860 } 8861 8862 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8863 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8864 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8865 memcpy(advertising_set->random_address, random_address, 6); 8866 // set tasks and start 8867 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8868 hci_run(); 8869 return ERROR_CODE_SUCCESS; 8870 } 8871 8872 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8873 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8874 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8875 advertising_set->adv_data = advertising_data; 8876 advertising_set->adv_data_len = advertising_data_length; 8877 // set tasks and start 8878 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8879 hci_run(); 8880 return ERROR_CODE_SUCCESS; 8881 } 8882 8883 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){ 8884 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8885 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8886 advertising_set->scan_data = scan_response_data; 8887 advertising_set->scan_data_len = scan_response_data_length; 8888 // set tasks and start 8889 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8890 hci_run(); 8891 return ERROR_CODE_SUCCESS; 8892 } 8893 8894 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8895 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8896 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8897 advertising_set->enable_timeout = timeout; 8898 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8899 // set tasks and start 8900 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8901 hci_run(); 8902 return ERROR_CODE_SUCCESS; 8903 } 8904 8905 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8906 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8907 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8908 // set tasks and start 8909 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8910 hci_run(); 8911 return ERROR_CODE_SUCCESS; 8912 } 8913 8914 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8915 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8916 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8917 // set tasks and start 8918 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8919 hci_run(); 8920 return ERROR_CODE_SUCCESS; 8921 } 8922 8923 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8924 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8925 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8926 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8927 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8928 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8929 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8930 // set tasks and start 8931 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8932 hci_run(); 8933 return ERROR_CODE_SUCCESS; 8934 } 8935 8936 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 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 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8940 return ERROR_CODE_SUCCESS; 8941 } 8942 8943 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8944 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8945 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8946 advertising_set->periodic_data = periodic_data; 8947 advertising_set->periodic_data_len = periodic_data_length; 8948 // set tasks and start 8949 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8950 hci_run(); 8951 return ERROR_CODE_SUCCESS; 8952 } 8953 8954 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8955 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8956 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8957 // set tasks and start 8958 advertising_set->periodic_include_adi = include_adi; 8959 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8960 hci_run(); 8961 return ERROR_CODE_SUCCESS; 8962 } 8963 8964 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8965 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8966 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8967 // set tasks and start 8968 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8969 hci_run(); 8970 return ERROR_CODE_SUCCESS; 8971 } 8972 8973 #ifdef ENABLE_LE_CENTRAL 8974 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8975 hci_stack->le_past_mode = mode; 8976 hci_stack->le_past_skip = skip; 8977 hci_stack->le_past_sync_timeout = sync_timeout; 8978 hci_stack->le_past_cte_type = cte_type; 8979 hci_stack->le_past_set_default_params = true; 8980 hci_run(); 8981 return ERROR_CODE_SUCCESS; 8982 } 8983 8984 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8985 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8986 if (hci_connection == NULL){ 8987 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8988 } 8989 hci_connection->le_past_sync_handle = sync_handle; 8990 hci_connection->le_past_service_data = service_data; 8991 hci_run(); 8992 return ERROR_CODE_SUCCESS; 8993 } 8994 #endif 8995 8996 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8997 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8998 if (hci_connection == NULL){ 8999 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9000 } 9001 hci_connection->le_past_advertising_handle = advertising_handle; 9002 hci_connection->le_past_service_data = service_data; 9003 hci_run(); 9004 return ERROR_CODE_SUCCESS; 9005 } 9006 9007 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 9008 9009 #endif 9010 9011 #endif 9012 9013 void hci_le_set_own_address_type(uint8_t own_address_type){ 9014 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 9015 if (own_address_type == hci_stack->le_own_addr_type) return; 9016 hci_stack->le_own_addr_type = own_address_type; 9017 9018 #ifdef ENABLE_LE_PERIPHERAL 9019 // update advertisement parameters, too 9020 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 9021 hci_run(); 9022 #endif 9023 #ifdef ENABLE_LE_CENTRAL 9024 // note: we don't update scan parameters or modify ongoing connection attempts 9025 #endif 9026 } 9027 9028 void hci_le_random_address_set(const bd_addr_t random_address){ 9029 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 9030 memcpy(hci_stack->le_random_address, random_address, 6); 9031 hci_stack->le_random_address_set = true; 9032 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 9033 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9034 if (hci_le_extended_advertising_supported()){ 9035 hci_assert_advertisement_set_0_ready(); 9036 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 9037 } 9038 #endif 9039 hci_run(); 9040 } 9041 9042 #endif 9043 9044 uint8_t gap_disconnect(hci_con_handle_t handle){ 9045 hci_connection_t * conn = hci_connection_for_handle(handle); 9046 if (!conn){ 9047 hci_emit_disconnection_complete(handle, 0); 9048 return 0; 9049 } 9050 uint8_t status = ERROR_CODE_SUCCESS; 9051 switch (conn->state){ 9052 case RECEIVED_DISCONNECTION_COMPLETE: 9053 // ignore if remote just disconnected 9054 break; 9055 case SEND_DISCONNECT: 9056 case SENT_DISCONNECT: 9057 // disconnect already requested or sent 9058 status = ERROR_CODE_COMMAND_DISALLOWED; 9059 break; 9060 default: 9061 // trigger hci_disconnect 9062 conn->state = SEND_DISCONNECT; 9063 hci_run(); 9064 break; 9065 } 9066 return status; 9067 } 9068 9069 int gap_read_rssi(hci_con_handle_t con_handle){ 9070 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9071 if (hci_connection == NULL) return 0; 9072 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 9073 hci_run(); 9074 return 1; 9075 } 9076 9077 /** 9078 * @brief Get connection type 9079 * @param con_handle 9080 * @result connection_type 9081 */ 9082 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 9083 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9084 if (!conn) return GAP_CONNECTION_INVALID; 9085 switch (conn->address_type){ 9086 case BD_ADDR_TYPE_LE_PUBLIC: 9087 case BD_ADDR_TYPE_LE_RANDOM: 9088 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9089 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9090 return GAP_CONNECTION_LE; 9091 case BD_ADDR_TYPE_SCO: 9092 return GAP_CONNECTION_SCO; 9093 case BD_ADDR_TYPE_ACL: 9094 return GAP_CONNECTION_ACL; 9095 default: 9096 return GAP_CONNECTION_INVALID; 9097 } 9098 } 9099 9100 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9101 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9102 if (!conn) return HCI_ROLE_INVALID; 9103 return (hci_role_t) conn->role; 9104 } 9105 9106 9107 #ifdef ENABLE_CLASSIC 9108 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9109 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9110 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9111 conn->request_role = role; 9112 hci_run(); 9113 return ERROR_CODE_SUCCESS; 9114 } 9115 #endif 9116 9117 #ifdef ENABLE_BLE 9118 9119 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){ 9120 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9121 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9122 9123 conn->le_phy_update_all_phys = all_phys; 9124 conn->le_phy_update_tx_phys = tx_phys; 9125 conn->le_phy_update_rx_phys = rx_phys; 9126 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9127 9128 hci_run(); 9129 9130 return 0; 9131 } 9132 9133 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9134 9135 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9136 // incorrect configuration: 9137 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9138 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9139 btstack_assert(false); 9140 #endif 9141 9142 // check if already in list 9143 btstack_linked_list_iterator_t it; 9144 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9145 while (btstack_linked_list_iterator_has_next(&it)) { 9146 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9147 if (entry->address_type != address_type) { 9148 continue; 9149 } 9150 if (memcmp(entry->address, address, 6) != 0) { 9151 continue; 9152 } 9153 9154 // if already on controller: 9155 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9156 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9157 // drop remove request 9158 entry->state = LE_WHITELIST_ON_CONTROLLER; 9159 return ERROR_CODE_SUCCESS; 9160 } else { 9161 // disallow as already on controller 9162 return ERROR_CODE_COMMAND_DISALLOWED; 9163 } 9164 } 9165 9166 // assume scheduled to add 9167 return ERROR_CODE_COMMAND_DISALLOWED; 9168 } 9169 9170 // alloc and add to list 9171 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9172 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9173 entry->address_type = address_type; 9174 (void)memcpy(entry->address, address, 6); 9175 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9176 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9177 return ERROR_CODE_SUCCESS; 9178 } 9179 9180 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9181 btstack_linked_list_iterator_t it; 9182 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9183 while (btstack_linked_list_iterator_has_next(&it)){ 9184 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9185 if (entry->address_type != address_type) { 9186 continue; 9187 } 9188 if (memcmp(entry->address, address, 6) != 0) { 9189 continue; 9190 } 9191 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9192 // remove from controller if already present 9193 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9194 } else { 9195 // directly remove entry from whitelist 9196 btstack_linked_list_iterator_remove(&it); 9197 btstack_memory_whitelist_entry_free(entry); 9198 } 9199 return ERROR_CODE_SUCCESS; 9200 } 9201 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9202 } 9203 9204 static void hci_whitelist_clear(void){ 9205 btstack_linked_list_iterator_t it; 9206 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9207 while (btstack_linked_list_iterator_has_next(&it)){ 9208 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9209 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9210 // remove from controller if already present 9211 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9212 continue; 9213 } 9214 // directly remove entry from whitelist 9215 btstack_linked_list_iterator_remove(&it); 9216 btstack_memory_whitelist_entry_free(entry); 9217 } 9218 } 9219 9220 /** 9221 * @brief Clear Whitelist 9222 * @return 0 if ok 9223 */ 9224 uint8_t gap_whitelist_clear(void){ 9225 hci_whitelist_clear(); 9226 hci_run(); 9227 return ERROR_CODE_SUCCESS; 9228 } 9229 9230 /** 9231 * @brief Add Device to Whitelist 9232 * @param address_typ 9233 * @param address 9234 * @return 0 if ok 9235 */ 9236 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9237 uint8_t status = hci_whitelist_add(address_type, address); 9238 if (status){ 9239 return status; 9240 } 9241 hci_run(); 9242 return ERROR_CODE_SUCCESS; 9243 } 9244 9245 /** 9246 * @brief Remove Device from Whitelist 9247 * @param address_typ 9248 * @param address 9249 * @return 0 if ok 9250 */ 9251 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9252 uint8_t status = hci_whitelist_remove(address_type, address); 9253 if (status){ 9254 return status; 9255 } 9256 hci_run(); 9257 return ERROR_CODE_SUCCESS; 9258 } 9259 9260 #ifdef ENABLE_LE_CENTRAL 9261 /** 9262 * @brief Connect with Whitelist 9263 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9264 * @return - if ok 9265 */ 9266 uint8_t gap_connect_with_whitelist(void){ 9267 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9268 return ERROR_CODE_COMMAND_DISALLOWED; 9269 } 9270 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9271 hci_run(); 9272 return ERROR_CODE_SUCCESS; 9273 } 9274 9275 /** 9276 * @brief Auto Connection Establishment - Start Connecting to device 9277 * @param address_typ 9278 * @param address 9279 * @return 0 if ok 9280 */ 9281 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9282 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9283 return ERROR_CODE_COMMAND_DISALLOWED; 9284 } 9285 9286 uint8_t status = hci_whitelist_add(address_type, address); 9287 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9288 return status; 9289 } 9290 9291 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9292 9293 hci_run(); 9294 return ERROR_CODE_SUCCESS; 9295 } 9296 9297 /** 9298 * @brief Auto Connection Establishment - Stop Connecting to device 9299 * @param address_typ 9300 * @param address 9301 * @return 0 if ok 9302 */ 9303 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9304 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9305 return ERROR_CODE_COMMAND_DISALLOWED; 9306 } 9307 9308 hci_whitelist_remove(address_type, address); 9309 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9310 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9311 } 9312 hci_run(); 9313 return 0; 9314 } 9315 9316 /** 9317 * @brief Auto Connection Establishment - Stop everything 9318 * @note Convenience function to stop all active auto connection attempts 9319 */ 9320 uint8_t gap_auto_connection_stop_all(void){ 9321 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9322 return ERROR_CODE_COMMAND_DISALLOWED; 9323 } 9324 hci_whitelist_clear(); 9325 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9326 hci_run(); 9327 return ERROR_CODE_SUCCESS; 9328 } 9329 9330 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9331 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9332 if (!conn) return 0; 9333 return conn->le_connection_interval; 9334 } 9335 #endif 9336 #endif 9337 9338 #ifdef ENABLE_CLASSIC 9339 /** 9340 * @brief Set Extended Inquiry Response data 9341 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9342 * @note has to be done before stack starts up 9343 */ 9344 void gap_set_extended_inquiry_response(const uint8_t * data){ 9345 hci_stack->eir_data = data; 9346 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9347 hci_run(); 9348 } 9349 9350 /** 9351 * @brief Start GAP Classic Inquiry 9352 * @param duration in 1.28s units 9353 * @return 0 if ok 9354 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9355 */ 9356 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9357 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9358 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9359 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9360 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9361 } 9362 hci_stack->inquiry_state = duration_in_1280ms_units; 9363 hci_stack->inquiry_max_period_length = 0; 9364 hci_stack->inquiry_min_period_length = 0; 9365 hci_run(); 9366 return 0; 9367 } 9368 9369 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9370 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9371 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9372 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9373 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9374 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9375 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9376 9377 hci_stack->inquiry_state = duration; 9378 hci_stack->inquiry_max_period_length = max_period_length; 9379 hci_stack->inquiry_min_period_length = min_period_length; 9380 hci_run(); 9381 return 0; 9382 } 9383 9384 /** 9385 * @brief Stop GAP Classic Inquiry 9386 * @return 0 if ok 9387 */ 9388 int gap_inquiry_stop(void){ 9389 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9390 // emit inquiry complete event, before it even started 9391 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9392 hci_emit_btstack_event(event, sizeof(event), 1); 9393 return 0; 9394 } 9395 switch (hci_stack->inquiry_state){ 9396 case GAP_INQUIRY_STATE_ACTIVE: 9397 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9398 hci_run(); 9399 return ERROR_CODE_SUCCESS; 9400 case GAP_INQUIRY_STATE_PERIODIC: 9401 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9402 hci_run(); 9403 return ERROR_CODE_SUCCESS; 9404 default: 9405 return ERROR_CODE_COMMAND_DISALLOWED; 9406 } 9407 } 9408 9409 void gap_inquiry_set_lap(uint32_t lap){ 9410 hci_stack->inquiry_lap = lap; 9411 } 9412 9413 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9414 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9415 hci_stack->inquiry_scan_window = inquiry_scan_window; 9416 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9417 hci_run(); 9418 } 9419 9420 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9421 { 9422 hci_stack->inquiry_tx_power_level = tx_power; 9423 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9424 hci_run(); 9425 } 9426 9427 9428 /** 9429 * @brief Remote Name Request 9430 * @param addr 9431 * @param page_scan_repetition_mode 9432 * @param clock_offset only used when bit 15 is set 9433 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9434 */ 9435 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9436 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9437 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9438 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9439 hci_stack->remote_name_clock_offset = clock_offset; 9440 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9441 hci_run(); 9442 return 0; 9443 } 9444 9445 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9446 hci_stack->gap_pairing_state = state; 9447 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9448 hci_run(); 9449 return 0; 9450 } 9451 9452 /** 9453 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9454 * @param addr 9455 * @param pin_data 9456 * @param pin_len 9457 * @return 0 if ok 9458 */ 9459 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9460 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9461 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9462 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9463 hci_stack->gap_pairing_pin_len = pin_len; 9464 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9465 } 9466 9467 /** 9468 * @brief Legacy Pairing Pin Code Response 9469 * @param addr 9470 * @param pin 9471 * @return 0 if ok 9472 */ 9473 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9474 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9475 } 9476 9477 /** 9478 * @brief Abort Legacy Pairing 9479 * @param addr 9480 * @param pin 9481 * @return 0 if ok 9482 */ 9483 int gap_pin_code_negative(bd_addr_t addr){ 9484 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9485 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9486 } 9487 9488 /** 9489 * @brief SSP Passkey Response 9490 * @param addr 9491 * @param passkey 9492 * @return 0 if ok 9493 */ 9494 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9495 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9496 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9497 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9498 } 9499 9500 /** 9501 * @brief Abort SSP Passkey Entry/Pairing 9502 * @param addr 9503 * @param pin 9504 * @return 0 if ok 9505 */ 9506 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9507 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9508 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9509 } 9510 9511 /** 9512 * @brief Accept SSP Numeric Comparison 9513 * @param addr 9514 * @param passkey 9515 * @return 0 if ok 9516 */ 9517 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9518 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9519 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9520 } 9521 9522 /** 9523 * @brief Abort SSP Numeric Comparison/Pairing 9524 * @param addr 9525 * @param pin 9526 * @return 0 if ok 9527 */ 9528 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9529 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9530 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9531 } 9532 9533 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9534 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9535 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9536 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9537 connectionSetAuthenticationFlags(conn, flag); 9538 hci_run(); 9539 return ERROR_CODE_SUCCESS; 9540 } 9541 #endif 9542 9543 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9544 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9545 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9546 } 9547 9548 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9549 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9550 } 9551 #endif 9552 9553 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9554 /** 9555 * @brief Report Remote OOB Data 9556 * @param bd_addr 9557 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9558 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9559 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9560 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9561 */ 9562 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){ 9563 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9564 if (connection == NULL) { 9565 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9566 } 9567 connection->classic_oob_c_192 = c_192; 9568 connection->classic_oob_r_192 = r_192; 9569 9570 // ignore P-256 if not supported by us 9571 if (hci_stack->secure_connections_active){ 9572 connection->classic_oob_c_256 = c_256; 9573 connection->classic_oob_r_256 = r_256; 9574 } 9575 9576 return ERROR_CODE_SUCCESS; 9577 } 9578 /** 9579 * @brief Generate new OOB data 9580 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9581 */ 9582 void gap_ssp_generate_oob_data(void){ 9583 hci_stack->classic_read_local_oob_data = true; 9584 hci_run(); 9585 } 9586 9587 #endif 9588 9589 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9590 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9591 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9592 if (connection == NULL) { 9593 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9594 } 9595 9596 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9597 connection->link_key_type = type; 9598 9599 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9600 } 9601 9602 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9603 /** 9604 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9605 * @param inquiry_mode see bluetooth_defines.h 9606 */ 9607 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9608 hci_stack->inquiry_mode = inquiry_mode; 9609 } 9610 9611 /** 9612 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9613 */ 9614 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9615 hci_stack->sco_voice_setting = voice_setting; 9616 } 9617 9618 /** 9619 * @brief Get SCO Voice Setting 9620 * @return current voice setting 9621 */ 9622 uint16_t hci_get_sco_voice_setting(void){ 9623 return hci_stack->sco_voice_setting; 9624 } 9625 9626 static int hci_have_usb_transport(void){ 9627 if (!hci_stack->hci_transport) return 0; 9628 const char * transport_name = hci_stack->hci_transport->name; 9629 if (!transport_name) return 0; 9630 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9631 } 9632 9633 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9634 uint16_t sco_packet_length = 0; 9635 9636 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9637 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as many bytes 9638 int multiplier; 9639 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9640 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9641 multiplier = 2; 9642 } else { 9643 multiplier = 1; 9644 } 9645 #endif 9646 9647 #ifdef ENABLE_SCO_OVER_HCI 9648 if (hci_have_usb_transport()){ 9649 // see Core Spec for H2 USB Transfer. 9650 // 3 byte SCO header + 24 bytes per connection 9651 // @note multiple sco connections not supported currently 9652 sco_packet_length = 3 + 24 * multiplier; 9653 } else { 9654 // 3 byte SCO header + SCO packet length over the air 9655 sco_packet_length = 3 + payload_size * multiplier; 9656 // assert that it still fits inside an SCO buffer 9657 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9658 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9659 } 9660 } 9661 #endif 9662 #ifdef HAVE_SCO_TRANSPORT 9663 // 3 byte SCO header + SCO packet length over the air 9664 sco_packet_length = 3 + payload_size * multiplier; 9665 // assert that it still fits inside an SCO buffer 9666 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9667 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9668 } 9669 #endif 9670 return sco_packet_length; 9671 } 9672 9673 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9674 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9675 if (connection != NULL){ 9676 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9677 } 9678 return 0; 9679 } 9680 9681 uint16_t hci_get_sco_packet_length(void){ 9682 btstack_linked_list_iterator_t it; 9683 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9684 while (btstack_linked_list_iterator_has_next(&it)){ 9685 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9686 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9687 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9688 } 9689 } 9690 return 0; 9691 } 9692 9693 /** 9694 * @brief Sets the master/slave policy 9695 * @param policy (0: attempt to become master, 1: let connecting device decide) 9696 */ 9697 void hci_set_master_slave_policy(uint8_t policy){ 9698 hci_stack->master_slave_policy = policy; 9699 } 9700 9701 #endif 9702 9703 HCI_STATE hci_get_state(void){ 9704 return hci_stack->state; 9705 } 9706 9707 #ifdef ENABLE_CLASSIC 9708 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9709 hci_stack->gap_classic_accept_callback = accept_callback; 9710 } 9711 #endif 9712 9713 /** 9714 * @brief Set callback for Bluetooth Hardware Error 9715 */ 9716 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9717 hci_stack->hardware_error_callback = fn; 9718 } 9719 9720 void hci_disconnect_all(void){ 9721 btstack_linked_list_iterator_t it; 9722 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9723 while (btstack_linked_list_iterator_has_next(&it)){ 9724 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9725 if (con->state == SENT_DISCONNECT) continue; 9726 con->state = SEND_DISCONNECT; 9727 } 9728 hci_run(); 9729 } 9730 9731 uint16_t hci_get_manufacturer(void){ 9732 return hci_stack->manufacturer; 9733 } 9734 9735 #ifdef ENABLE_BLE 9736 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9737 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9738 if (!hci_con) return NULL; 9739 return &hci_con->sm_connection; 9740 } 9741 9742 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9743 // without sm.c default values from create_connection_for_bd_addr_and_type() result in non-encrypted, not-authenticated 9744 #endif 9745 9746 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9747 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9748 if (hci_connection == NULL) return 0; 9749 if (hci_is_le_connection(hci_connection)){ 9750 #ifdef ENABLE_BLE 9751 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9752 if (sm_conn->sm_connection_encrypted != 0u) { 9753 return sm_conn->sm_actual_encryption_key_size; 9754 } 9755 #endif 9756 } else { 9757 #ifdef ENABLE_CLASSIC 9758 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9759 return hci_connection->encryption_key_size; 9760 } 9761 #endif 9762 } 9763 return 0; 9764 } 9765 9766 bool gap_authenticated(hci_con_handle_t con_handle){ 9767 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9768 if (hci_connection == NULL) return false; 9769 9770 switch (hci_connection->address_type){ 9771 #ifdef ENABLE_BLE 9772 case BD_ADDR_TYPE_LE_PUBLIC: 9773 case BD_ADDR_TYPE_LE_RANDOM: 9774 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9775 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9776 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9777 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9778 #endif 9779 #ifdef ENABLE_CLASSIC 9780 case BD_ADDR_TYPE_SCO: 9781 case BD_ADDR_TYPE_ACL: 9782 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9783 #endif 9784 default: 9785 return false; 9786 } 9787 } 9788 9789 bool gap_secure_connection(hci_con_handle_t con_handle){ 9790 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9791 if (hci_connection == NULL) return 0; 9792 9793 switch (hci_connection->address_type){ 9794 #ifdef ENABLE_BLE 9795 case BD_ADDR_TYPE_LE_PUBLIC: 9796 case BD_ADDR_TYPE_LE_RANDOM: 9797 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9798 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9799 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9800 return hci_connection->sm_connection.sm_connection_sc; 9801 #endif 9802 #ifdef ENABLE_CLASSIC 9803 case BD_ADDR_TYPE_SCO: 9804 case BD_ADDR_TYPE_ACL: 9805 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9806 #endif 9807 default: 9808 return false; 9809 } 9810 } 9811 9812 bool gap_bonded(hci_con_handle_t con_handle){ 9813 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9814 if (hci_connection == NULL) return 0; 9815 9816 #ifdef ENABLE_CLASSIC 9817 link_key_t link_key; 9818 link_key_type_t link_key_type; 9819 #endif 9820 switch (hci_connection->address_type){ 9821 #ifdef ENABLE_BLE 9822 case BD_ADDR_TYPE_LE_PUBLIC: 9823 case BD_ADDR_TYPE_LE_RANDOM: 9824 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9825 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9826 return hci_connection->sm_connection.sm_le_db_index >= 0; 9827 #endif 9828 #ifdef ENABLE_CLASSIC 9829 case BD_ADDR_TYPE_SCO: 9830 case BD_ADDR_TYPE_ACL: 9831 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9832 #endif 9833 default: 9834 return false; 9835 } 9836 } 9837 9838 #ifdef ENABLE_BLE 9839 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9840 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9841 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9842 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9843 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticated connection cannot be authorized 9844 return sm_conn->sm_connection_authorization_state; 9845 } 9846 #endif 9847 9848 #ifdef ENABLE_CLASSIC 9849 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){ 9850 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9851 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9852 conn->sniff_min_interval = sniff_min_interval; 9853 conn->sniff_max_interval = sniff_max_interval; 9854 conn->sniff_attempt = sniff_attempt; 9855 conn->sniff_timeout = sniff_timeout; 9856 hci_run(); 9857 return 0; 9858 } 9859 9860 /** 9861 * @brief Exit Sniff mode 9862 * @param con_handle 9863 @ @return 0 if ok 9864 */ 9865 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9866 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9867 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9868 conn->sniff_min_interval = 0xffff; 9869 hci_run(); 9870 return 0; 9871 } 9872 9873 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){ 9874 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9875 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9876 conn->sniff_subrating_max_latency = max_latency; 9877 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9878 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9879 hci_run(); 9880 return ERROR_CODE_SUCCESS; 9881 } 9882 9883 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){ 9884 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9885 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9886 conn->qos_service_type = service_type; 9887 conn->qos_token_rate = token_rate; 9888 conn->qos_peak_bandwidth = peak_bandwidth; 9889 conn->qos_latency = latency; 9890 conn->qos_delay_variation = delay_variation; 9891 hci_run(); 9892 return ERROR_CODE_SUCCESS; 9893 } 9894 9895 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9896 hci_stack->new_page_scan_interval = page_scan_interval; 9897 hci_stack->new_page_scan_window = page_scan_window; 9898 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9899 hci_run(); 9900 } 9901 9902 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9903 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9904 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9905 hci_run(); 9906 } 9907 9908 void gap_set_page_timeout(uint16_t page_timeout){ 9909 hci_stack->page_timeout = page_timeout; 9910 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9911 hci_run(); 9912 } 9913 9914 #endif 9915 9916 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9917 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9918 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9919 if (le_device_db_index >= le_device_db_max_count()) return; 9920 uint8_t offset = le_device_db_index >> 3; 9921 uint8_t mask = 1 << (le_device_db_index & 7); 9922 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9923 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9924 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9925 // note: go back to remove entries, otherwise, a remove + add will skip the add 9926 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9927 } 9928 } 9929 9930 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9931 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9932 if (le_device_db_index >= le_device_db_max_count()) return; 9933 uint8_t offset = le_device_db_index >> 3; 9934 uint8_t mask = 1 << (le_device_db_index & 7); 9935 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9936 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9937 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9938 } 9939 } 9940 9941 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9942 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9943 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9944 } 9945 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9946 // restart le resolving list update 9947 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9948 } 9949 return ERROR_CODE_SUCCESS; 9950 } 9951 9952 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9953 hci_stack->le_privacy_mode = privacy_mode; 9954 } 9955 #endif 9956 9957 #ifdef ENABLE_BLE 9958 #ifdef ENABLE_LE_CENTRAL 9959 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9960 9961 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9962 9963 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9964 // incorrect configuration: 9965 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9966 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9967 btstack_assert(false); 9968 #endif 9969 9970 // check if already in list 9971 btstack_linked_list_iterator_t it; 9972 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9973 while (btstack_linked_list_iterator_has_next(&it)) { 9974 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9975 if (entry->sid != advertising_sid) { 9976 continue; 9977 } 9978 if (entry->address_type != address_type) { 9979 continue; 9980 } 9981 if (memcmp(entry->address, address, 6) != 0) { 9982 continue; 9983 } 9984 // disallow if already scheduled to add 9985 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9986 return ERROR_CODE_COMMAND_DISALLOWED; 9987 } 9988 // still on controller, but scheduled to remove -> re-add 9989 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9990 return ERROR_CODE_SUCCESS; 9991 } 9992 // alloc and add to list 9993 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9994 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9995 entry->sid = advertising_sid; 9996 entry->address_type = address_type; 9997 (void)memcpy(entry->address, address, 6); 9998 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9999 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 10000 return ERROR_CODE_SUCCESS; 10001 } 10002 10003 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10004 btstack_linked_list_iterator_t it; 10005 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10006 while (btstack_linked_list_iterator_has_next(&it)){ 10007 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10008 if (entry->sid != advertising_sid) { 10009 continue; 10010 } 10011 if (entry->address_type != address_type) { 10012 continue; 10013 } 10014 if (memcmp(entry->address, address, 6) != 0) { 10015 continue; 10016 } 10017 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10018 // remove from controller if already present 10019 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10020 } else { 10021 // directly remove entry from whitelist 10022 btstack_linked_list_iterator_remove(&it); 10023 btstack_memory_periodic_advertiser_list_entry_free(entry); 10024 } 10025 return ERROR_CODE_SUCCESS; 10026 } 10027 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10028 } 10029 10030 static void hci_periodic_advertiser_list_clear(void){ 10031 btstack_linked_list_iterator_t it; 10032 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10033 while (btstack_linked_list_iterator_has_next(&it)){ 10034 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10035 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10036 // remove from controller if already present 10037 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10038 continue; 10039 } 10040 // directly remove entry from whitelist 10041 btstack_linked_list_iterator_remove(&it); 10042 btstack_memory_periodic_advertiser_list_entry_free(entry); 10043 } 10044 } 10045 10046 uint8_t gap_periodic_advertiser_list_clear(void){ 10047 hci_periodic_advertiser_list_clear(); 10048 hci_run(); 10049 return ERROR_CODE_SUCCESS; 10050 } 10051 10052 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10053 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 10054 if (status){ 10055 return status; 10056 } 10057 hci_run(); 10058 return ERROR_CODE_SUCCESS; 10059 } 10060 10061 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10062 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 10063 if (status){ 10064 return status; 10065 } 10066 hci_run(); 10067 return ERROR_CODE_SUCCESS; 10068 } 10069 10070 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 10071 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 10072 // abort if already active 10073 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 10074 return ERROR_CODE_COMMAND_DISALLOWED; 10075 } 10076 // store request 10077 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 10078 hci_stack->le_periodic_sync_options = options; 10079 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 10080 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 10081 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 10082 hci_stack->le_periodic_sync_skip = skip; 10083 hci_stack->le_periodic_sync_timeout = sync_timeout; 10084 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 10085 10086 hci_run(); 10087 return ERROR_CODE_SUCCESS; 10088 } 10089 10090 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 10091 // abort if not requested 10092 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 10093 return ERROR_CODE_COMMAND_DISALLOWED; 10094 } 10095 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 10096 hci_run(); 10097 return ERROR_CODE_SUCCESS; 10098 } 10099 10100 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10101 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10102 return ERROR_CODE_COMMAND_DISALLOWED; 10103 } 10104 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10105 hci_run(); 10106 return ERROR_CODE_SUCCESS; 10107 } 10108 10109 #endif 10110 #endif 10111 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10112 static hci_iso_stream_t * 10113 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10114 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10115 if (iso_stream != NULL){ 10116 iso_stream->iso_type = iso_type; 10117 iso_stream->state = state; 10118 iso_stream->group_id = group_id; 10119 iso_stream->stream_id = stream_id; 10120 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10121 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10122 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10123 } 10124 return iso_stream; 10125 } 10126 10127 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10128 btstack_linked_list_iterator_t it; 10129 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10130 while (btstack_linked_list_iterator_has_next(&it)){ 10131 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10132 if (iso_stream->cis_handle == con_handle ) { 10133 return iso_stream; 10134 } 10135 } 10136 return NULL; 10137 } 10138 10139 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10140 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10141 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10142 btstack_memory_hci_iso_stream_free(iso_stream); 10143 } 10144 10145 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10146 btstack_linked_list_iterator_t it; 10147 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10148 while (btstack_linked_list_iterator_has_next(&it)){ 10149 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10150 if ((iso_stream->group_id == group_id) && 10151 (iso_stream->iso_type == iso_type)){ 10152 btstack_linked_list_iterator_remove(&it); 10153 btstack_memory_hci_iso_stream_free(iso_stream); 10154 } 10155 } 10156 } 10157 10158 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10159 btstack_linked_list_iterator_t it; 10160 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10161 while (btstack_linked_list_iterator_has_next(&it)){ 10162 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10163 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10164 (iso_stream->group_id == group_id)){ 10165 btstack_linked_list_iterator_remove(&it); 10166 btstack_memory_hci_iso_stream_free(iso_stream); 10167 } 10168 } 10169 } 10170 10171 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10172 UNUSED(big_handle); 10173 10174 btstack_linked_list_iterator_t it; 10175 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10176 while (btstack_linked_list_iterator_has_next(&it)){ 10177 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10178 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10179 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10180 } 10181 } 10182 } 10183 10184 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10185 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10186 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10187 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10188 return (sdu_len_offset + 2 + sdu_len) == size; 10189 } 10190 10191 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10192 if (iso_stream == NULL){ 10193 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10194 return; 10195 } 10196 10197 if (hci_stack->iso_packet_handler == NULL) { 10198 return; 10199 } 10200 10201 // parse header 10202 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10203 uint16_t data_total_length = little_endian_read_16(packet, 2); 10204 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10205 10206 // assert packet is complete 10207 if ((data_total_length + 4u) != size){ 10208 return; 10209 } 10210 10211 if ((pb_flag & 0x01) == 0){ 10212 if (pb_flag == 0x02){ 10213 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10214 if (hci_iso_sdu_complete(packet, size)) { 10215 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10216 } 10217 } else { 10218 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10219 if (size > sizeof(iso_stream->reassembly_buffer)){ 10220 return; 10221 } 10222 memcpy(iso_stream->reassembly_buffer, packet, size); 10223 // fix pb_flag 10224 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10225 iso_stream->reassembly_pos = size; 10226 } 10227 } else { 10228 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10229 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10230 if (ts_flag != 0){ 10231 return; 10232 } 10233 // append fragment 10234 if (iso_stream->reassembly_pos == 0){ 10235 return; 10236 } 10237 10238 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10239 // reset reassembly buffer 10240 iso_stream->reassembly_pos = 0; 10241 return; 10242 } 10243 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10244 iso_stream->reassembly_pos += data_total_length; 10245 10246 // deliver if last fragment and SDU complete 10247 if (pb_flag == 0x03){ 10248 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10249 // fix data_total_length 10250 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10251 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10252 } 10253 // reset reassembly buffer 10254 iso_stream->reassembly_pos = 0; 10255 } 10256 } 10257 } 10258 10259 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10260 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10261 uint16_t pos = 0; 10262 event[pos++] = HCI_EVENT_META_GAP; 10263 event[pos++] = 4 + (2 * big->num_bis); 10264 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10265 event[pos++] = status; 10266 event[pos++] = big->big_handle; 10267 event[pos++] = big->num_bis; 10268 uint8_t i; 10269 for (i=0;i<big->num_bis;i++){ 10270 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10271 pos += 2; 10272 } 10273 hci_emit_btstack_event(event, pos, 0); 10274 } 10275 10276 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10277 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10278 uint16_t pos = 0; 10279 event[pos++] = HCI_EVENT_META_GAP; 10280 event[pos++] = 4 + (2 * cig->num_cis); 10281 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10282 event[pos++] = status; 10283 event[pos++] = cig->cig_id; 10284 event[pos++] = cig->num_cis; 10285 uint8_t i; 10286 for (i=0;i<cig->num_cis;i++){ 10287 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10288 pos += 2; 10289 } 10290 hci_emit_btstack_event(event, pos, 0); 10291 } 10292 10293 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10294 uint16_t pos = 0; 10295 event[pos++] = HCI_EVENT_META_GAP; 10296 event[pos++] = 8; 10297 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10298 event[pos++] = status; 10299 event[pos++] = iso_stream->group_id; 10300 event[pos++] = iso_stream->stream_id; 10301 little_endian_store_16(event, pos, iso_stream->cis_handle); 10302 pos += 2; 10303 little_endian_store_16(event, pos, iso_stream->acl_handle); 10304 pos += 2; 10305 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10306 pos += 2; 10307 event[pos++] = iso_stream->number_of_subevents; 10308 event[pos++] = iso_stream->burst_number_c_to_p; 10309 event[pos++] = iso_stream->burst_number_p_to_c; 10310 event[pos++] = iso_stream->flush_timeout_c_to_p; 10311 event[pos++] = iso_stream->flush_timeout_p_to_c; 10312 return pos; 10313 } 10314 10315 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10316 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10317 // cache data before finalizing struct 10318 uint8_t event [17]; 10319 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10320 btstack_assert(pos <= sizeof(event)); 10321 if (status != ERROR_CODE_SUCCESS){ 10322 hci_iso_stream_finalize(iso_stream); 10323 } 10324 hci_emit_btstack_event(event, pos, 0); 10325 } 10326 10327 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10328 uint8_t event [4]; 10329 uint16_t pos = 0; 10330 event[pos++] = HCI_EVENT_META_GAP; 10331 event[pos++] = 2; 10332 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10333 event[pos++] = big->big_handle; 10334 hci_emit_btstack_event(event, pos, 0); 10335 } 10336 10337 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10338 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10339 uint16_t pos = 0; 10340 event[pos++] = HCI_EVENT_META_GAP; 10341 event[pos++] = 4; 10342 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10343 event[pos++] = status; 10344 event[pos++] = big_sync->big_handle; 10345 event[pos++] = big_sync->num_bis; 10346 uint8_t i; 10347 for (i=0;i<big_sync->num_bis;i++){ 10348 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10349 pos += 2; 10350 } 10351 hci_emit_btstack_event(event, pos, 0); 10352 } 10353 10354 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10355 uint8_t event [4]; 10356 uint16_t pos = 0; 10357 event[pos++] = HCI_EVENT_META_GAP; 10358 event[pos++] = 2; 10359 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10360 event[pos++] = big_handle; 10361 hci_emit_btstack_event(event, pos, 0); 10362 } 10363 10364 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10365 uint8_t event[6]; 10366 uint16_t pos = 0; 10367 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10368 event[pos++] = sizeof(event) - 2; 10369 event[pos++] = big->big_handle; 10370 event[pos++] = bis_index; 10371 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10372 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10373 } 10374 10375 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10376 uint8_t event[4]; 10377 uint16_t pos = 0; 10378 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10379 event[pos++] = sizeof(event) - 2; 10380 little_endian_store_16(event, pos, cis_con_handle); 10381 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10382 } 10383 10384 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10385 btstack_linked_list_iterator_t it; 10386 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10387 while (btstack_linked_list_iterator_has_next(&it)){ 10388 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10389 if ( big->big_handle == big_handle ) { 10390 return big; 10391 } 10392 } 10393 return NULL; 10394 } 10395 10396 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10397 btstack_linked_list_iterator_t it; 10398 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10399 while (btstack_linked_list_iterator_has_next(&it)){ 10400 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10401 if ( big_sync->big_handle == big_handle ) { 10402 return big_sync; 10403 } 10404 } 10405 return NULL; 10406 } 10407 10408 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10409 hci_stack->iso_packets_to_queue = num_packets; 10410 } 10411 10412 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10413 btstack_linked_list_iterator_t it; 10414 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10415 while (btstack_linked_list_iterator_has_next(&it)){ 10416 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10417 if ( cig->cig_id == cig_id ) { 10418 return cig; 10419 } 10420 } 10421 return NULL; 10422 } 10423 10424 static void hci_iso_notify_can_send_now(void){ 10425 10426 // BIG 10427 10428 btstack_linked_list_iterator_t it; 10429 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10430 while (btstack_linked_list_iterator_has_next(&it)){ 10431 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10432 // track number completed packet timestamps 10433 if (big->num_completed_timestamp_current_valid){ 10434 big->num_completed_timestamp_current_valid = false; 10435 if (big->num_completed_timestamp_previous_valid){ 10436 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10437 int32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10438 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10439 big->num_completed_timestamp_previous_ms); 10440 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10441 // to catch up, skip packet on all BIS 10442 uint8_t i; 10443 for (i=0;i<big->num_bis;i++){ 10444 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10445 if (iso_stream){ 10446 iso_stream->num_packets_to_skip++; 10447 } 10448 } 10449 } 10450 } 10451 big->num_completed_timestamp_previous_valid = true; 10452 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10453 } 10454 10455 if (big->can_send_now_requested){ 10456 // check if no outgoing iso packets pending and no can send now have to be emitted 10457 uint8_t i; 10458 bool can_send = true; 10459 uint8_t num_iso_queued_minimum = 0; 10460 for (i=0;i<big->num_bis;i++){ 10461 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10462 if (iso_stream == NULL) continue; 10463 // handle case where individual ISO packet was sent too late: 10464 // for each additionally queued packet, a new one needs to get skipped 10465 if (i==0){ 10466 num_iso_queued_minimum = iso_stream->num_packets_sent; 10467 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10468 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10469 iso_stream->num_packets_to_skip += num_packets_to_skip; 10470 iso_stream->num_packets_sent -= num_packets_to_skip; 10471 } 10472 // check if we can send now 10473 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10474 can_send = false; 10475 break; 10476 } 10477 } 10478 if (can_send){ 10479 // propagate can send now to individual streams 10480 big->can_send_now_requested = false; 10481 for (i=0;i<big->num_bis;i++){ 10482 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10483 iso_stream->emit_ready_to_send = true; 10484 } 10485 } 10486 } 10487 } 10488 10489 if (hci_stack->hci_packet_buffer_reserved) return; 10490 10491 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10492 while (btstack_linked_list_iterator_has_next(&it)){ 10493 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10494 // report bis ready 10495 uint8_t i; 10496 for (i=0;i<big->num_bis;i++){ 10497 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10498 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10499 iso_stream->emit_ready_to_send = false; 10500 hci_emit_bis_can_send_now(big, i); 10501 if (hci_stack->hci_packet_buffer_reserved) return; 10502 } 10503 } 10504 } 10505 10506 10507 // CIS 10508 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10509 while (btstack_linked_list_iterator_has_next(&it)) { 10510 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10511 if ((iso_stream->can_send_now_requested) && 10512 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10513 iso_stream->can_send_now_requested = false; 10514 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10515 if (hci_stack->hci_packet_buffer_reserved) return; 10516 } 10517 } 10518 } 10519 10520 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10521 // make big handle unique and usuable for big and big sync 10522 if (hci_big_for_handle(big_handle) != NULL){ 10523 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10524 } 10525 if (hci_big_sync_for_handle(big_handle) != NULL){ 10526 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10527 } 10528 if (num_bis == 0){ 10529 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10530 } 10531 if (num_bis > MAX_NR_BIS){ 10532 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10533 } 10534 10535 // reserve ISO Streams 10536 uint8_t i; 10537 uint8_t status = ERROR_CODE_SUCCESS; 10538 for (i=0;i<num_bis;i++){ 10539 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10540 if (iso_stream == NULL) { 10541 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10542 break; 10543 } 10544 } 10545 10546 // free structs on error 10547 if (status != ERROR_CODE_SUCCESS){ 10548 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10549 } 10550 10551 return status; 10552 } 10553 10554 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10555 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10556 if (status != ERROR_CODE_SUCCESS){ 10557 return status; 10558 } 10559 10560 le_audio_big_t * big = storage; 10561 big->big_handle = big_params->big_handle; 10562 big->params = big_params; 10563 big->state = LE_AUDIO_BIG_STATE_CREATE; 10564 big->num_bis = big_params->num_bis; 10565 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10566 10567 hci_run(); 10568 10569 return ERROR_CODE_SUCCESS; 10570 } 10571 10572 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10573 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10574 if (status != ERROR_CODE_SUCCESS){ 10575 return status; 10576 } 10577 10578 le_audio_big_sync_t * big_sync = storage; 10579 big_sync->big_handle = big_sync_params->big_handle; 10580 big_sync->params = big_sync_params; 10581 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10582 big_sync->num_bis = big_sync_params->num_bis; 10583 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10584 10585 hci_run(); 10586 10587 return ERROR_CODE_SUCCESS; 10588 } 10589 10590 uint8_t gap_big_terminate(uint8_t big_handle){ 10591 le_audio_big_t * big = hci_big_for_handle(big_handle); 10592 if (big == NULL){ 10593 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10594 } 10595 switch (big->state){ 10596 case LE_AUDIO_BIG_STATE_CREATE: 10597 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10598 hci_emit_big_terminated(big); 10599 break; 10600 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10601 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10602 break; 10603 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10604 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10605 case LE_AUDIO_BIG_STATE_ACTIVE: 10606 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10607 hci_run(); 10608 break; 10609 default: 10610 return ERROR_CODE_COMMAND_DISALLOWED; 10611 } 10612 return ERROR_CODE_SUCCESS; 10613 } 10614 10615 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10616 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10617 if (big_sync == NULL){ 10618 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10619 } 10620 switch (big_sync->state){ 10621 case LE_AUDIO_BIG_STATE_CREATE: 10622 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10623 hci_emit_big_sync_stopped(big_handle); 10624 break; 10625 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10626 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10627 break; 10628 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10629 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10630 case LE_AUDIO_BIG_STATE_ACTIVE: 10631 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10632 hci_run(); 10633 break; 10634 default: 10635 return ERROR_CODE_COMMAND_DISALLOWED; 10636 } 10637 return ERROR_CODE_SUCCESS; 10638 } 10639 10640 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10641 le_audio_big_t * big = hci_big_for_handle(big_handle); 10642 if (big == NULL){ 10643 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10644 } 10645 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10646 return ERROR_CODE_COMMAND_DISALLOWED; 10647 } 10648 big->can_send_now_requested = true; 10649 hci_iso_notify_can_send_now(); 10650 return ERROR_CODE_SUCCESS; 10651 } 10652 10653 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10654 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10655 if (iso_stream == NULL){ 10656 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10657 } 10658 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10659 return ERROR_CODE_COMMAND_DISALLOWED; 10660 } 10661 iso_stream->can_send_now_requested = true; 10662 hci_iso_notify_can_send_now(); 10663 return ERROR_CODE_SUCCESS; 10664 } 10665 10666 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10667 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10668 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10669 } 10670 if (cig_params->num_cis == 0){ 10671 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10672 } 10673 if (cig_params->num_cis > MAX_NR_CIS){ 10674 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10675 } 10676 10677 // reserve ISO Streams 10678 uint8_t i; 10679 uint8_t status = ERROR_CODE_SUCCESS; 10680 for (i=0;i<cig_params->num_cis;i++){ 10681 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10682 if (iso_stream == NULL) { 10683 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10684 break; 10685 } 10686 } 10687 10688 // free structs on error 10689 if (status != ERROR_CODE_SUCCESS){ 10690 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10691 return status; 10692 } 10693 10694 le_audio_cig_t * cig = storage; 10695 cig->cig_id = cig_params->cig_id; 10696 cig->num_cis = cig_params->num_cis; 10697 cig->params = cig_params; 10698 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10699 for (i=0;i<cig->num_cis;i++){ 10700 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10701 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10702 cig->cis_setup_active[i] = false; 10703 cig->cis_established[i] = false; 10704 } 10705 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10706 10707 hci_run(); 10708 10709 return ERROR_CODE_SUCCESS; 10710 } 10711 10712 uint8_t gap_cig_remove(uint8_t cig_id){ 10713 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10714 if (cig == NULL){ 10715 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10716 } 10717 10718 // close active CIS 10719 uint8_t i; 10720 for (i=0;i<cig->num_cis;i++){ 10721 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10722 if (stream != NULL){ 10723 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10724 } 10725 } 10726 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10727 10728 hci_run(); 10729 10730 return ERROR_CODE_SUCCESS; 10731 } 10732 10733 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10734 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10735 if (cig == NULL){ 10736 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10737 } 10738 10739 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10740 return ERROR_CODE_COMMAND_DISALLOWED; 10741 } 10742 10743 // store ACL Connection Handles 10744 uint8_t i; 10745 for (i=0;i<cig->num_cis;i++){ 10746 // check that all con handles exist and store 10747 hci_con_handle_t cis_handle = cis_con_handles[i]; 10748 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10749 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10750 } 10751 uint8_t j; 10752 bool found = false; 10753 for (j=0;j<cig->num_cis;j++){ 10754 if (cig->cis_con_handles[j] == cis_handle){ 10755 cig->acl_con_handles[j] = acl_con_handles[j]; 10756 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10757 btstack_assert(iso_stream != NULL); 10758 iso_stream->acl_handle = acl_con_handles[j]; 10759 found = true; 10760 break; 10761 } 10762 } 10763 if (!found){ 10764 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10765 } 10766 } 10767 10768 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10769 hci_run(); 10770 10771 return ERROR_CODE_SUCCESS; 10772 } 10773 10774 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10775 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10776 if (iso_stream == NULL){ 10777 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10778 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10779 } 10780 10781 // set next state and continue 10782 iso_stream->state = state; 10783 hci_run(); 10784 return ERROR_CODE_SUCCESS; 10785 } 10786 10787 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10788 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10789 } 10790 10791 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10792 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10793 } 10794 10795 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10796 10797 // GAP Privacy - notify clients before random address update 10798 10799 static bool gap_privacy_client_all_ready(void){ 10800 // check if all ready 10801 btstack_linked_list_iterator_t it; 10802 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10803 while (btstack_linked_list_iterator_has_next(&it)) { 10804 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10805 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10806 return false; 10807 } 10808 } 10809 return true; 10810 } 10811 10812 static void gap_privacy_clients_handle_ready(void){ 10813 // clear 'ready' 10814 btstack_linked_list_iterator_t it; 10815 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10816 while (btstack_linked_list_iterator_has_next(&it)) { 10817 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10818 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10819 } 10820 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10821 hci_run(); 10822 } 10823 10824 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10825 btstack_linked_list_iterator_t it; 10826 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10827 while (btstack_linked_list_iterator_has_next(&it)) { 10828 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10829 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10830 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10831 (*client->callback)(client, new_random_address); 10832 } 10833 } 10834 if (gap_privacy_client_all_ready()){ 10835 gap_privacy_clients_handle_ready(); 10836 } 10837 } 10838 10839 void gap_privacy_client_register(gap_privacy_client_t * client){ 10840 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10841 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10842 } 10843 10844 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10845 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10846 if (gap_privacy_client_all_ready()){ 10847 gap_privacy_clients_handle_ready(); 10848 } 10849 } 10850 10851 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10852 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10853 } 10854 10855 #endif /* ENABLE_BLE */ 10856 10857 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10858 void hci_setup_test_connections_fuzz(void){ 10859 hci_connection_t * conn; 10860 10861 // default address: 66:55:44:33:00:01 10862 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10863 10864 // setup Controller info 10865 hci_stack->num_cmd_packets = 255; 10866 hci_stack->acl_packets_total_num = 255; 10867 10868 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10869 addr[5] = 0x01; 10870 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, 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 incoming Classic SCO connection with con handle 0x0002 10876 addr[5] = 0x02; 10877 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10878 conn->con_handle = addr[5]; 10879 conn->state = RECEIVED_CONNECTION_REQUEST; 10880 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10881 10882 // setup ready Classic ACL connection with con handle 0x0003 10883 addr[5] = 0x03; 10884 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, 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 Classic SCO connection with con handle 0x0004 10890 addr[5] = 0x04; 10891 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10892 conn->con_handle = addr[5]; 10893 conn->state = OPEN; 10894 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10895 10896 // setup ready LE ACL connection with con handle 0x005 and public address 10897 addr[5] = 0x05; 10898 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10899 conn->con_handle = addr[5]; 10900 conn->state = OPEN; 10901 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10902 conn->sm_connection.sm_connection_encrypted = 1; 10903 } 10904 10905 void hci_free_connections_fuzz(void){ 10906 btstack_linked_list_iterator_t it; 10907 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10908 while (btstack_linked_list_iterator_has_next(&it)){ 10909 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10910 btstack_linked_list_iterator_remove(&it); 10911 btstack_memory_hci_connection_free(con); 10912 } 10913 } 10914 void hci_simulate_working_fuzz(void){ 10915 hci_stack->le_scanning_param_update = false; 10916 hci_init_done(); 10917 hci_stack->num_cmd_packets = 255; 10918 } 10919 #endif 10920