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 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 239 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size); 240 #endif 241 #endif 242 #ifdef ENABLE_LE_PERIPHERAL 243 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 244 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 245 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len); 246 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 247 #endif /* ENABLE_LE_PERIPHERAL */ 248 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 249 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); 250 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 251 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 252 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 253 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 254 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 255 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 256 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 257 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 258 static void hci_iso_notify_can_send_now(void); 259 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 260 static void hci_emit_big_terminated(const le_audio_big_t * big); 261 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 262 static void hci_emit_big_sync_stopped(uint8_t big_handle); 263 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 264 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 265 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 266 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 267 #endif /* ENABLE_BLE */ 268 269 // the STACK is here 270 #ifndef HAVE_MALLOC 271 static hci_stack_t hci_stack_static; 272 #endif 273 static hci_stack_t * hci_stack = NULL; 274 275 #ifdef ENABLE_CLASSIC 276 // default name 277 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 278 279 // test helper 280 static uint8_t disable_l2cap_timeouts = 0; 281 #endif 282 283 // reset connection state on create and on reconnect 284 // don't overwrite addr, con handle, role 285 static void hci_connection_init(hci_connection_t * conn){ 286 conn->authentication_flags = AUTH_FLAG_NONE; 287 conn->bonding_flags = 0; 288 conn->requested_security_level = LEVEL_0; 289 conn->link_key_type = INVALID_LINK_KEY; 290 #ifdef ENABLE_CLASSIC 291 conn->request_role = HCI_ROLE_INVALID; 292 conn->sniff_subrating_max_latency = 0xffff; 293 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 294 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 295 btstack_run_loop_set_timer_context(&conn->timeout, conn); 296 hci_connection_timestamp(conn); 297 #endif 298 conn->acl_recombination_length = 0; 299 conn->acl_recombination_pos = 0; 300 conn->num_packets_sent = 0; 301 302 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 303 #ifdef ENABLE_BLE 304 conn->le_phy_update_all_phys = 0xff; 305 #endif 306 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 307 conn->le_max_tx_octets = 27; 308 #endif 309 #ifdef ENABLE_CLASSIC_PAIRING_OOB 310 conn->classic_oob_c_192 = NULL; 311 conn->classic_oob_r_192 = NULL; 312 conn->classic_oob_c_256 = NULL; 313 conn->classic_oob_r_256 = NULL; 314 #endif 315 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 316 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 317 conn->le_past_advertising_handle = 0xff; 318 #endif 319 } 320 321 /** 322 * create connection for given address 323 * 324 * @return connection OR NULL, if no memory left 325 */ 326 static hci_connection_t * 327 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 328 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 329 330 hci_connection_t * conn = btstack_memory_hci_connection_get(); 331 if (!conn) return NULL; 332 hci_connection_init(conn); 333 334 bd_addr_copy(conn->address, addr); 335 conn->address_type = addr_type; 336 conn->con_handle = HCI_CON_HANDLE_INVALID; 337 conn->role = role; 338 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 339 340 return conn; 341 } 342 343 344 /** 345 * get le connection parameter range 346 * 347 * @return le connection parameter range struct 348 */ 349 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 350 *range = hci_stack->le_connection_parameter_range; 351 } 352 353 /** 354 * set le connection parameter range 355 * 356 */ 357 358 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 359 hci_stack->le_connection_parameter_range = *range; 360 } 361 362 /** 363 * @brief Test if connection parameters are inside in existing rage 364 * @param conn_interval_min (unit: 1.25ms) 365 * @param conn_interval_max (unit: 1.25ms) 366 * @param conn_latency 367 * @param supervision_timeout (unit: 10ms) 368 * @return 1 if included 369 */ 370 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){ 371 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 372 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 373 374 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 375 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 376 377 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 378 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 379 380 return 1; 381 } 382 383 /** 384 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 385 * @note: default: 1 386 * @param max_peripheral_connections 387 */ 388 #ifdef ENABLE_LE_PERIPHERAL 389 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 390 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 391 } 392 #endif 393 394 /** 395 * get hci connections iterator 396 * 397 * @return hci connections iterator 398 */ 399 400 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 401 btstack_linked_list_iterator_init(it, &hci_stack->connections); 402 } 403 404 /** 405 * get connection for a given handle 406 * 407 * @return connection OR NULL, if not found 408 */ 409 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 410 btstack_linked_list_iterator_t it; 411 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 412 while (btstack_linked_list_iterator_has_next(&it)){ 413 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 414 if ( item->con_handle == con_handle ) { 415 return item; 416 } 417 } 418 return NULL; 419 } 420 421 /** 422 * get connection for given address 423 * 424 * @return connection OR NULL, if not found 425 */ 426 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 427 btstack_linked_list_iterator_t it; 428 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 429 while (btstack_linked_list_iterator_has_next(&it)){ 430 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 431 if (connection->address_type != addr_type) continue; 432 if (memcmp(addr, connection->address, 6) != 0) continue; 433 return connection; 434 } 435 return NULL; 436 } 437 438 #ifdef ENABLE_CLASSIC 439 440 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 441 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 442 } 443 444 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 445 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 446 } 447 448 #ifdef ENABLE_SCO_OVER_HCI 449 static int hci_number_sco_connections(void){ 450 int connections = 0; 451 btstack_linked_list_iterator_t it; 452 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 453 while (btstack_linked_list_iterator_has_next(&it)){ 454 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 455 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 456 connections++; 457 } 458 return connections; 459 } 460 #endif 461 462 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 463 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 464 #ifdef HAVE_EMBEDDED_TICK 465 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 466 // connections might be timed out 467 hci_emit_l2cap_check_timeout(connection); 468 } 469 #else 470 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 471 // connections might be timed out 472 hci_emit_l2cap_check_timeout(connection); 473 } 474 #endif 475 } 476 477 static void hci_connection_timestamp(hci_connection_t *connection){ 478 #ifdef HAVE_EMBEDDED_TICK 479 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 480 #else 481 connection->timestamp = btstack_run_loop_get_time_ms(); 482 #endif 483 } 484 485 /** 486 * add authentication flags and reset timer 487 * @note: assumes classic connection 488 * @note: bd_addr is passed in as little endian uint8_t * as it is called from parsing packets 489 */ 490 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 491 bd_addr_t addr; 492 reverse_bd_addr(bd_addr, addr); 493 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 494 if (conn) { 495 connectionSetAuthenticationFlags(conn, flags); 496 hci_connection_timestamp(conn); 497 } 498 } 499 500 static bool hci_pairing_active(hci_connection_t * hci_connection){ 501 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 502 } 503 504 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 505 if (hci_pairing_active(hci_connection)) return; 506 if (ssp){ 507 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 508 } else { 509 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 510 } 511 // if we are initiator, we have sent an HCI Authenticate Request 512 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 513 514 // if we are responder, use minimal service security level as required level 515 if (!initiator){ 516 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); 517 } 518 519 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 520 521 uint8_t event[12]; 522 event[0] = GAP_EVENT_PAIRING_STARTED; 523 event[1] = 10; 524 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 525 reverse_bd_addr(hci_connection->address, &event[4]); 526 event[10] = (uint8_t) ssp; 527 event[11] = (uint8_t) initiator; 528 hci_emit_btstack_event(event, sizeof(event), 1); 529 } 530 531 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 532 hci_connection->requested_security_level = LEVEL_0; 533 if (!hci_pairing_active(hci_connection)) return; 534 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 535 #ifdef ENABLE_CLASSIC_PAIRING_OOB 536 hci_connection->classic_oob_c_192 = NULL; 537 hci_connection->classic_oob_r_192 = NULL; 538 hci_connection->classic_oob_c_256 = NULL; 539 hci_connection->classic_oob_r_256 = NULL; 540 #endif 541 log_info("pairing complete, status %02x", status); 542 543 uint8_t event[11]; 544 event[0] = GAP_EVENT_PAIRING_COMPLETE; 545 event[1] = 9; 546 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 547 reverse_bd_addr(hci_connection->address, &event[4]); 548 event[10] = status; 549 hci_emit_btstack_event(event, sizeof(event), 1); 550 551 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 552 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 553 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 554 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 555 hci_connection->bonding_status = status; 556 } 557 } 558 559 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 560 hci_connection_t * conn = hci_connection_for_handle(handle); 561 if (!conn) return false; 562 return hci_pairing_active(conn); 563 } 564 565 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 566 if (!hci_stack->link_key_db) return; 567 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 568 hci_stack->link_key_db->delete_link_key(addr); 569 } 570 571 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 572 if (!hci_stack->link_key_db) return; 573 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 574 hci_stack->link_key_db->put_link_key(addr, link_key, type); 575 } 576 577 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 578 if (!hci_stack->link_key_db) return false; 579 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 580 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 581 return result; 582 } 583 584 void gap_delete_all_link_keys(void){ 585 bd_addr_t addr; 586 link_key_t link_key; 587 link_key_type_t type; 588 btstack_link_key_iterator_t it; 589 int ok = gap_link_key_iterator_init(&it); 590 if (!ok) { 591 log_error("could not initialize iterator"); 592 return; 593 } 594 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 595 gap_drop_link_key_for_bd_addr(addr); 596 } 597 gap_link_key_iterator_done(&it); 598 } 599 600 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 601 if (!hci_stack->link_key_db) return 0; 602 if (!hci_stack->link_key_db->iterator_init) return 0; 603 return hci_stack->link_key_db->iterator_init(it); 604 } 605 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){ 606 if (!hci_stack->link_key_db) return 0; 607 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 608 } 609 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 610 if (!hci_stack->link_key_db) return; 611 hci_stack->link_key_db->iterator_done(it); 612 } 613 #endif 614 615 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 616 switch (address_type){ 617 case BD_ADDR_TYPE_LE_PUBLIC: 618 case BD_ADDR_TYPE_LE_RANDOM: 619 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 620 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 621 return true; 622 default: 623 return false; 624 } 625 } 626 627 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 628 switch (address_type){ 629 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 630 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 631 return true; 632 default: 633 return false; 634 } 635 } 636 637 static bool hci_is_le_connection(hci_connection_t * connection){ 638 return hci_is_le_connection_type(connection->address_type); 639 } 640 641 /** 642 * count connections 643 */ 644 static int nr_hci_connections(void){ 645 int count = 0; 646 btstack_linked_item_t *it; 647 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 648 count++; 649 } 650 return count; 651 } 652 653 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 654 655 unsigned int num_packets_sent_classic = 0; 656 unsigned int num_packets_sent_le = 0; 657 658 btstack_linked_item_t *it; 659 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 660 hci_connection_t * connection = (hci_connection_t *) it; 661 if (hci_is_le_connection(connection)){ 662 num_packets_sent_le += connection->num_packets_sent; 663 } 664 if (connection->address_type == BD_ADDR_TYPE_ACL){ 665 num_packets_sent_classic += connection->num_packets_sent; 666 } 667 } 668 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 669 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 670 int free_slots_le = 0; 671 672 if (free_slots_classic < 0){ 673 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); 674 return 0; 675 } 676 677 if (hci_stack->le_acl_packets_total_num){ 678 // if we have LE slots, they are used 679 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 680 if (free_slots_le < 0){ 681 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); 682 return 0; 683 } 684 } else { 685 // otherwise, classic slots are used for LE, too 686 free_slots_classic -= num_packets_sent_le; 687 if (free_slots_classic < 0){ 688 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); 689 return 0; 690 } 691 } 692 693 switch (address_type){ 694 case BD_ADDR_TYPE_UNKNOWN: 695 log_error("hci_number_free_acl_slots: unknown address type"); 696 return 0; 697 698 case BD_ADDR_TYPE_ACL: 699 return (uint16_t) free_slots_classic; 700 701 default: 702 if (hci_stack->le_acl_packets_total_num > 0){ 703 return (uint16_t) free_slots_le; 704 } 705 return (uint16_t) free_slots_classic; 706 } 707 } 708 709 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 710 // get connection type 711 hci_connection_t * connection = hci_connection_for_handle(con_handle); 712 if (!connection){ 713 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 714 return 0; 715 } 716 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 717 } 718 719 #ifdef ENABLE_CLASSIC 720 static int hci_number_free_sco_slots(void){ 721 unsigned int num_sco_packets_sent = 0; 722 btstack_linked_item_t *it; 723 if (hci_stack->synchronous_flow_control_enabled){ 724 // explicit flow control 725 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 726 hci_connection_t * connection = (hci_connection_t *) it; 727 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 728 num_sco_packets_sent += connection->num_packets_sent; 729 } 730 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 731 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 732 return 0; 733 } 734 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 735 } else { 736 // implicit flow control 737 int num_ready = 0; 738 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 739 hci_connection_t * connection = (hci_connection_t *) it; 740 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 741 if (connection->sco_tx_ready == 0) continue; 742 num_ready++; 743 } 744 return num_ready; 745 } 746 } 747 #endif 748 749 // only used to send HCI Host Number Completed Packets 750 static int hci_can_send_command_packet_transport(void){ 751 if (hci_stack->hci_packet_buffer_reserved) return 0; 752 753 // check for async hci transport implementations 754 if (hci_stack->hci_transport->can_send_packet_now){ 755 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 756 return 0; 757 } 758 } 759 return 1; 760 } 761 762 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 763 bool hci_can_send_command_packet_now(void){ 764 if (hci_can_send_command_packet_transport() == 0) return false; 765 return hci_stack->num_cmd_packets > 0u; 766 } 767 768 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 769 // check for async hci transport implementations 770 if (!hci_stack->hci_transport->can_send_packet_now) return true; 771 return hci_stack->hci_transport->can_send_packet_now(packet_type); 772 } 773 774 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 775 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 776 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 777 } 778 779 bool hci_can_send_acl_le_packet_now(void){ 780 if (hci_stack->hci_packet_buffer_reserved) return false; 781 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 782 } 783 784 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 785 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 786 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 787 } 788 789 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 790 if (hci_stack->hci_packet_buffer_reserved) return false; 791 return hci_can_send_prepared_acl_packet_now(con_handle); 792 } 793 794 #ifdef ENABLE_CLASSIC 795 bool hci_can_send_acl_classic_packet_now(void){ 796 if (hci_stack->hci_packet_buffer_reserved) return false; 797 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 798 } 799 800 bool hci_can_send_prepared_sco_packet_now(void){ 801 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 802 if (hci_have_usb_transport()){ 803 return hci_stack->sco_can_send_now; 804 } else { 805 return hci_number_free_sco_slots() > 0; 806 } 807 } 808 809 bool hci_can_send_sco_packet_now(void){ 810 if (hci_stack->hci_packet_buffer_reserved) return false; 811 return hci_can_send_prepared_sco_packet_now(); 812 } 813 814 void hci_request_sco_can_send_now_event(void){ 815 hci_stack->sco_waiting_for_can_send_now = 1; 816 hci_notify_if_sco_can_send_now(); 817 } 818 #endif 819 820 // used for internal checks in l2cap.c 821 bool hci_is_packet_buffer_reserved(void){ 822 return hci_stack->hci_packet_buffer_reserved; 823 } 824 825 void hci_reserve_packet_buffer(void){ 826 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 827 hci_stack->hci_packet_buffer_reserved = true; 828 } 829 830 void hci_release_packet_buffer(void){ 831 btstack_assert(hci_stack->hci_packet_buffer_reserved); 832 hci_stack->hci_packet_buffer_reserved = false; 833 hci_emit_transport_packet_sent(); 834 } 835 836 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 837 static int hci_transport_synchronous(void){ 838 return hci_stack->hci_transport->can_send_packet_now == NULL; 839 } 840 841 // used for debugging 842 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 843 static void hci_controller_dump_packets(void){ 844 // format: "{handle:04x}:{count:02d} " 845 char summaries[3][7 * 8 + 1]; 846 uint16_t totals[3]; 847 uint8_t index; 848 for (index = 0 ; index < 3 ; index++){ 849 summaries[index][0] = 0; 850 totals[index] = 0; 851 } 852 btstack_linked_item_t *it; 853 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 854 hci_connection_t * connection = (hci_connection_t *) it; 855 switch (connection->address_type){ 856 case BD_ADDR_TYPE_ACL: 857 index = 0; 858 break; 859 case BD_ADDR_TYPE_SCO: 860 index = 2; 861 break; 862 default: 863 index = 1; 864 break; 865 } 866 totals[index] += connection->num_packets_sent; 867 char item_text[10]; 868 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 869 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 870 } 871 for (index = 0 ; index < 3 ; index++){ 872 if (summaries[index][0] == 0){ 873 summaries[index][0] = '-'; 874 summaries[index][1] = 0; 875 } 876 } 877 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]); 878 } 879 #endif 880 881 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 882 883 // 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); 884 885 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 886 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 887 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 888 max_acl_data_packet_length = hci_stack->le_data_packets_length; 889 } 890 891 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 892 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 893 max_acl_data_packet_length = connection->le_max_tx_octets; 894 } 895 #endif 896 897 log_debug("hci_send_acl_packet_fragments entered"); 898 899 uint8_t status = ERROR_CODE_SUCCESS; 900 // multiple packets could be sent on a synchronous HCI transport 901 while (true){ 902 903 log_debug("hci_send_acl_packet_fragments loop entered"); 904 905 // get current data 906 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 907 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 908 bool more_fragments = false; 909 910 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 911 if (current_acl_data_packet_length > max_acl_data_packet_length){ 912 more_fragments = true; 913 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 914 } 915 916 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragment) 917 if (acl_header_pos > 0u){ 918 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 919 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 920 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 921 } 922 923 // update header len 924 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 925 926 // count packet 927 connection->num_packets_sent++; 928 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 929 930 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 931 if (more_fragments){ 932 // update start of next fragment to send 933 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 934 } else { 935 // done 936 hci_stack->acl_fragmentation_pos = 0; 937 hci_stack->acl_fragmentation_total_size = 0; 938 } 939 940 // send packet 941 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 942 const int size = current_acl_data_packet_length + 4; 943 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 944 hci_stack->acl_fragmentation_tx_active = 1; 945 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 946 if (err != 0){ 947 // no error from HCI Transport expected 948 status = ERROR_CODE_HARDWARE_FAILURE; 949 break; 950 } 951 952 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 953 hci_controller_dump_packets(); 954 #endif 955 956 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 957 958 // done yet? 959 if (!more_fragments) break; 960 961 // can send more? 962 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 963 } 964 965 log_debug("hci_send_acl_packet_fragments loop over"); 966 967 // release buffer now for synchronous transport 968 if (hci_transport_synchronous()){ 969 hci_stack->acl_fragmentation_tx_active = 0; 970 hci_release_packet_buffer(); 971 } 972 973 return status; 974 } 975 976 // pre: caller has reserved the packet buffer 977 uint8_t hci_send_acl_packet_buffer(int size){ 978 btstack_assert(hci_stack->hci_packet_buffer_reserved); 979 980 uint8_t * packet = hci_stack->hci_packet_buffer; 981 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 982 983 hci_connection_t *connection = hci_connection_for_handle( con_handle); 984 if (!connection) { 985 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 986 hci_release_packet_buffer(); 987 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 988 } 989 990 // check for free places on Bluetooth module 991 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 992 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 993 hci_release_packet_buffer(); 994 return BTSTACK_ACL_BUFFERS_FULL; 995 } 996 997 #ifdef ENABLE_CLASSIC 998 hci_connection_timestamp(connection); 999 #endif 1000 1001 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 1002 1003 // setup data 1004 hci_stack->acl_fragmentation_total_size = size; 1005 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1006 1007 return hci_send_acl_packet_fragments(connection); 1008 } 1009 1010 #ifdef ENABLE_CLASSIC 1011 // pre: caller has reserved the packet buffer 1012 uint8_t hci_send_sco_packet_buffer(int size){ 1013 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1014 1015 uint8_t * packet = hci_stack->hci_packet_buffer; 1016 1017 // skip checks in loopback mode 1018 if (!hci_stack->loopback_mode){ 1019 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1020 1021 // check for free places on Bluetooth module 1022 if (!hci_can_send_prepared_sco_packet_now()) { 1023 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1024 hci_release_packet_buffer(); 1025 return BTSTACK_ACL_BUFFERS_FULL; 1026 } 1027 1028 // track send packet in connection struct 1029 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1030 if (!connection) { 1031 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1032 hci_release_packet_buffer(); 1033 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1034 } 1035 1036 if (hci_have_usb_transport()){ 1037 // token used 1038 hci_stack->sco_can_send_now = false; 1039 } else { 1040 if (hci_stack->synchronous_flow_control_enabled){ 1041 connection->num_packets_sent++; 1042 } else { 1043 connection->sco_tx_ready--; 1044 } 1045 } 1046 } 1047 1048 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1049 1050 #ifdef HAVE_SCO_TRANSPORT 1051 hci_stack->sco_transport->send_packet(packet, size); 1052 hci_release_packet_buffer(); 1053 hci_emit_transport_packet_sent(); 1054 1055 return 0; 1056 #else 1057 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1058 uint8_t status; 1059 if (err == 0){ 1060 status = ERROR_CODE_SUCCESS; 1061 } else { 1062 status = ERROR_CODE_HARDWARE_FAILURE; 1063 } 1064 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 1065 hci_release_packet_buffer(); 1066 } 1067 return status; 1068 #endif 1069 } 1070 #endif 1071 1072 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1073 static uint8_t hci_send_iso_packet_fragments(void){ 1074 1075 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1076 uint8_t status = ERROR_CODE_SUCCESS; 1077 // multiple packets could be send on a synchronous HCI transport 1078 while (true){ 1079 1080 // get current data 1081 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1082 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1083 bool more_fragments = false; 1084 1085 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1086 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1087 more_fragments = true; 1088 current_iso_data_packet_length = max_iso_data_packet_length; 1089 } 1090 1091 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1092 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1093 uint8_t pb_flags; 1094 if (iso_header_pos == 0u){ 1095 // first fragment, keep TS field 1096 pb_flags = more_fragments ? 0x00 : 0x02; 1097 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1098 } else { 1099 // later fragment, drop TS field 1100 pb_flags = more_fragments ? 0x01 : 0x03; 1101 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1102 } 1103 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1104 1105 // update header len 1106 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1107 1108 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1109 if (more_fragments){ 1110 // update start of next fragment to send 1111 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1112 } else { 1113 // done 1114 hci_stack->iso_fragmentation_pos = 0; 1115 hci_stack->iso_fragmentation_total_size = 0; 1116 } 1117 1118 // send packet 1119 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1120 const int size = current_iso_data_packet_length + 4; 1121 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1122 hci_stack->iso_fragmentation_tx_active = true; 1123 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1124 if (err != 0){ 1125 // no error from HCI Transport expected 1126 status = ERROR_CODE_HARDWARE_FAILURE; 1127 } 1128 1129 // done yet? 1130 if (!more_fragments) break; 1131 1132 // can send more? 1133 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1134 } 1135 1136 // release buffer now for synchronous transport 1137 if (hci_transport_synchronous()){ 1138 hci_stack->iso_fragmentation_tx_active = false; 1139 hci_release_packet_buffer(); 1140 hci_emit_transport_packet_sent(); 1141 } 1142 1143 return status; 1144 } 1145 1146 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1147 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1148 1149 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1150 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1151 if (iso_stream == NULL){ 1152 hci_release_packet_buffer(); 1153 hci_iso_notify_can_send_now(); 1154 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1155 } 1156 1157 // TODO: check for space on controller 1158 1159 // skip iso packets if needed 1160 if (iso_stream->num_packets_to_skip > 0){ 1161 iso_stream->num_packets_to_skip--; 1162 // pretend it was processed and trigger next one 1163 hci_release_packet_buffer(); 1164 hci_iso_notify_can_send_now(); 1165 return ERROR_CODE_SUCCESS; 1166 } 1167 1168 // track outgoing packet sent 1169 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1170 iso_stream->num_packets_sent++; 1171 1172 // setup data 1173 hci_stack->iso_fragmentation_total_size = size; 1174 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1175 1176 return hci_send_iso_packet_fragments(); 1177 } 1178 #endif 1179 1180 static void acl_handler(uint8_t *packet, uint16_t size){ 1181 1182 // get info 1183 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1184 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1185 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1186 uint16_t acl_length = READ_ACL_LENGTH(packet); 1187 1188 // ignore non-registered handle 1189 if (!conn){ 1190 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1191 return; 1192 } 1193 1194 // assert packet is complete 1195 if ((acl_length + 4u) != size){ 1196 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1197 return; 1198 } 1199 1200 #ifdef ENABLE_CLASSIC 1201 // update idle timestamp 1202 hci_connection_timestamp(conn); 1203 #endif 1204 1205 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1206 hci_stack->host_completed_packets = 1; 1207 conn->num_packets_completed++; 1208 #endif 1209 1210 // handle different packet types 1211 switch (acl_flags & 0x03u) { 1212 1213 case 0x01: // continuation fragment 1214 1215 // sanity checks 1216 if (conn->acl_recombination_pos == 0u) { 1217 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1218 return; 1219 } 1220 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1221 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1222 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1223 conn->acl_recombination_pos = 0; 1224 return; 1225 } 1226 1227 // append fragment payload (header already stored) 1228 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1229 &packet[4], acl_length); 1230 conn->acl_recombination_pos += acl_length; 1231 1232 // forward complete L2CAP packet if complete. 1233 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1234 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1235 // reset recombination buffer 1236 conn->acl_recombination_length = 0; 1237 conn->acl_recombination_pos = 0; 1238 } 1239 break; 1240 1241 case 0x02: { // first fragment 1242 1243 // sanity check 1244 if (conn->acl_recombination_pos) { 1245 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1246 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1247 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1248 } 1249 conn->acl_recombination_pos = 0; 1250 } 1251 1252 // peek into L2CAP packet! 1253 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1254 1255 // compare fragment size to L2CAP packet size 1256 if (acl_length >= (l2cap_length + 4u)){ 1257 // forward fragment as L2CAP packet 1258 hci_emit_acl_packet(packet, l2cap_length + 8u); 1259 } else { 1260 1261 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1262 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1263 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1264 return; 1265 } 1266 1267 // store first fragment and tweak acl length for complete package 1268 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1269 packet, acl_length + 4u); 1270 conn->acl_recombination_pos = acl_length + 4u; 1271 conn->acl_recombination_length = l2cap_length; 1272 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1273 } 1274 break; 1275 1276 } 1277 default: 1278 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1279 return; 1280 } 1281 1282 // execute main loop 1283 hci_run(); 1284 } 1285 1286 static void hci_connection_stop_timer(hci_connection_t * conn){ 1287 btstack_run_loop_remove_timer(&conn->timeout); 1288 #ifdef ENABLE_CLASSIC 1289 btstack_run_loop_remove_timer(&conn->timeout_sco); 1290 #endif 1291 } 1292 1293 static void hci_shutdown_connection(hci_connection_t *conn){ 1294 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1295 1296 #ifdef ENABLE_CLASSIC 1297 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1298 bd_addr_type_t addr_type = conn->address_type; 1299 #endif 1300 #ifdef HAVE_SCO_TRANSPORT 1301 hci_con_handle_t con_handle = conn->con_handle; 1302 #endif 1303 #endif 1304 1305 hci_connection_stop_timer(conn); 1306 1307 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1308 btstack_memory_hci_connection_free( conn ); 1309 1310 // now it's gone 1311 hci_emit_nr_connections_changed(); 1312 1313 #ifdef ENABLE_CLASSIC 1314 #ifdef ENABLE_SCO_OVER_HCI 1315 // update SCO 1316 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1317 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1318 } 1319 #endif 1320 #ifdef HAVE_SCO_TRANSPORT 1321 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1322 hci_stack->sco_transport->close(con_handle); 1323 } 1324 #endif 1325 #endif 1326 } 1327 1328 #ifdef ENABLE_CLASSIC 1329 1330 static const uint16_t hci_acl_packet_type_sizes[] = { 1331 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1332 HCI_ACL_DH1_SIZE, 0, 0, 0, 1333 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1334 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1335 }; 1336 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1337 0, // 3 slot packets 1338 1, // 5 slot packets 1339 25, // EDR 2 mpbs 1340 26, // EDR 3 mbps 1341 39, // 3 slot EDR packtes 1342 40, // 5 slot EDR packet 1343 }; 1344 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1345 0x0f00, // 3 slot packets 1346 0xf000, // 5 slot packets 1347 0x1102, // EDR 2 mpbs 1348 0x2204, // EDR 3 mbps 1349 0x0300, // 3 slot EDR packtes 1350 0x3000, // 5 slot EDR packet 1351 }; 1352 1353 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1354 // enable packet types based on size 1355 uint16_t packet_types = 0; 1356 unsigned int i; 1357 for (i=0;i<16;i++){ 1358 if (hci_acl_packet_type_sizes[i] == 0) continue; 1359 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1360 packet_types |= 1 << i; 1361 } 1362 } 1363 // disable packet types due to missing local supported features 1364 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1365 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1366 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1367 if (feature_set) continue; 1368 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1369 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1370 } 1371 return packet_types; 1372 } 1373 1374 uint16_t hci_usable_acl_packet_types(void){ 1375 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1376 // flip bits for "may not be used" 1377 return active_packet_types ^ 0x3306; 1378 } 1379 1380 void hci_enable_acl_packet_types(uint16_t packet_types){ 1381 hci_stack->enabled_packet_types_acl = packet_types; 1382 } 1383 1384 static const struct { 1385 uint8_t feature_index; 1386 uint16_t feature_packet_mask; 1387 } hci_sco_packet_type_feature_requirements[] = { 1388 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1389 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1390 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1391 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1392 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1393 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1394 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1395 }; 1396 1397 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1398 static const struct { 1399 uint16_t type; 1400 uint16_t payload_length; 1401 } hci_sco_packet_type_to_payload_length[] = { 1402 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1403 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1404 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1405 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1406 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1407 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1408 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1409 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1410 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1411 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1412 }; 1413 1414 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1415 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1416 unsigned int i; 1417 // disable packet types due to missing local supported features 1418 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1419 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1420 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1421 if (feature_set) continue; 1422 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); 1423 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1424 } 1425 return packet_types; 1426 } 1427 1428 uint16_t hci_usable_sco_packet_types(void){ 1429 return hci_stack->usable_packet_types_sco; 1430 } 1431 1432 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1433 uint8_t i; 1434 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1435 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1436 return hci_sco_packet_type_to_payload_length[i].payload_length; 1437 } 1438 } 1439 return 0; 1440 } 1441 1442 #endif 1443 1444 uint8_t* hci_get_outgoing_packet_buffer(void){ 1445 // hci packet buffer is >= acl data packet length 1446 return hci_stack->hci_packet_buffer; 1447 } 1448 1449 uint16_t hci_max_acl_data_packet_length(void){ 1450 return hci_stack->acl_data_packet_length; 1451 } 1452 1453 #ifdef ENABLE_CLASSIC 1454 bool hci_extended_sco_link_supported(void){ 1455 // No. 31, byte 3, bit 7 1456 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1457 } 1458 #endif 1459 1460 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1461 // No. 54, byte 6, bit 6 1462 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1463 } 1464 1465 #ifdef ENABLE_CLASSIC 1466 static bool gap_ssp_supported(void){ 1467 // No. 51, byte 6, bit 3 1468 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1469 } 1470 #endif 1471 1472 bool hci_classic_supported(void){ 1473 #ifdef ENABLE_CLASSIC 1474 // No. 37, byte 4, bit 5, = No BR/EDR Support 1475 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1476 #else 1477 return false; 1478 #endif 1479 } 1480 1481 bool hci_le_supported(void){ 1482 #ifdef ENABLE_BLE 1483 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1484 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1485 #else 1486 return false; 1487 #endif 1488 } 1489 1490 static bool hci_command_supported(uint8_t command_index){ 1491 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1492 } 1493 1494 #ifdef ENABLE_BLE 1495 1496 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1497 bool hci_le_extended_advertising_supported(void){ 1498 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1499 } 1500 #endif 1501 1502 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1503 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1504 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1505 } else { 1506 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1507 } 1508 } 1509 1510 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1511 *addr_type = hci_stack->le_own_addr_type; 1512 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1513 } 1514 1515 #ifdef ENABLE_LE_PERIPHERAL 1516 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1517 *addr_type = hci_stack->le_advertisements_own_addr_type; 1518 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1519 } 1520 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1521 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1522 if (advertising_handle == 0){ 1523 gap_le_get_own_advertisements_address(addr_type, addr); 1524 } else { 1525 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1526 if (advertising_set != NULL){ 1527 switch (advertising_set->extended_params.own_address_type){ 1528 case BD_ADDR_TYPE_LE_PUBLIC: 1529 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1530 memcpy(addr, hci_stack->local_bd_addr, 6); 1531 break; 1532 case BD_ADDR_TYPE_LE_RANDOM: 1533 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1534 memcpy(addr, advertising_set->random_address, 6); 1535 break; 1536 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1537 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1538 // do nothing as random address was already set from enhanced connection complete 1539 break; 1540 default: 1541 break; 1542 } 1543 } 1544 } 1545 } 1546 #endif 1547 #endif 1548 1549 #ifdef ENABLE_LE_CENTRAL 1550 1551 /** 1552 * @brief Get own addr type and address used for LE connections (Central) 1553 */ 1554 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1555 *addr_type = hci_stack->le_connection_own_addr_type; 1556 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1557 } 1558 1559 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1560 1561 uint16_t offset = 3; 1562 uint8_t num_reports = packet[offset]; 1563 offset += 1; 1564 1565 uint16_t i; 1566 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1567 for (i=0; (i<num_reports) && (offset < size);i++){ 1568 // sanity checks on data_length: 1569 uint8_t data_length = packet[offset + 8]; 1570 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1571 if ((offset + 9u + data_length + 1u) > size) return; 1572 // setup event 1573 uint8_t event_size = 10u + data_length; 1574 uint16_t pos = 0; 1575 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1576 event[pos++] = event_size; 1577 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1578 offset += 8; 1579 pos += 8; 1580 event[pos++] = packet[offset + 1 + data_length]; // rssi 1581 event[pos++] = data_length; 1582 offset++; 1583 (void)memcpy(&event[pos], &packet[offset], data_length); 1584 pos += data_length; 1585 offset += data_length + 1u; // rssi 1586 hci_emit_btstack_event(event, pos, 1); 1587 } 1588 } 1589 1590 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1591 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1592 uint16_t offset = 3; 1593 uint8_t num_reports = packet[offset++]; 1594 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1595 uint8_t i; 1596 for (i=0; (i<num_reports) && (offset < size);i++){ 1597 // sanity checks on data_length: 1598 uint16_t data_length = packet[offset + 23]; 1599 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1600 if ((offset + 24u + data_length) > size) return; 1601 uint16_t event_type = little_endian_read_16(packet, offset); 1602 offset += 2; 1603 if ((event_type & 0x10) != 0) { 1604 // setup legacy event 1605 uint8_t legacy_event_type; 1606 switch (event_type){ 1607 case 0x13: // 0b0010011 1608 // ADV_IND 1609 legacy_event_type = 0; 1610 break; 1611 case 0x15: // 0b0010101 1612 // ADV_DIRECT_IND 1613 legacy_event_type = 1; 1614 break; 1615 case 0x12: // 0b0010010 1616 // ADV_SCAN_IND 1617 legacy_event_type = 2; 1618 break; 1619 case 0x10: // 0b0010000: 1620 // ADV_NONCONN_IND 1621 legacy_event_type = 3; 1622 break; 1623 case 0x1B: // 0b0011011 1624 case 0x1A: // 0b0011010 1625 // SCAN_RSP 1626 legacy_event_type = 4; 1627 break; 1628 default: 1629 legacy_event_type = 0; 1630 break; 1631 } 1632 uint16_t pos = 0; 1633 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1634 event[pos++] = 10u + data_length; 1635 event[pos++] = legacy_event_type; 1636 // copy address type + address 1637 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1638 offset += 7; 1639 pos += 7; 1640 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1641 offset += 4; 1642 // copy rssi 1643 event[pos++] = packet[offset++]; 1644 // skip periodic advertising interval and direct address 1645 offset += 9; 1646 // copy data len + data; 1647 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1648 pos += 1 +data_length; 1649 offset += 1+ data_length; 1650 hci_emit_btstack_event(event, pos, 1); 1651 } else { 1652 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1653 uint8_t report_len = 24 + data_length; 1654 event[1] = report_len; 1655 little_endian_store_16(event, 2, event_type); 1656 memcpy(&event[4], &packet[offset], report_len); 1657 offset += report_len; 1658 hci_emit_btstack_event(event, 2 + report_len, 1); 1659 } 1660 } 1661 } 1662 #endif 1663 1664 #endif 1665 #endif 1666 1667 #ifdef ENABLE_BLE 1668 #ifdef ENABLE_LE_PERIPHERAL 1669 static void hci_update_advertisements_enabled_for_current_roles(void){ 1670 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1671 // get number of active le slave connections 1672 int num_slave_connections = 0; 1673 btstack_linked_list_iterator_t it; 1674 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1675 while (btstack_linked_list_iterator_has_next(&it)){ 1676 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1677 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1678 if (con->state != OPEN) continue; 1679 if (con->role != HCI_ROLE_SLAVE) continue; 1680 if (!hci_is_le_connection(con)) continue; 1681 num_slave_connections++; 1682 } 1683 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1684 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1685 } else { 1686 hci_stack->le_advertisements_enabled_for_current_roles = false; 1687 } 1688 } 1689 #endif 1690 #endif 1691 1692 #ifdef ENABLE_CLASSIC 1693 static void gap_run_set_local_name(void){ 1694 hci_reserve_packet_buffer(); 1695 uint8_t * packet = hci_stack->hci_packet_buffer; 1696 // construct HCI Command and send 1697 uint16_t opcode = hci_write_local_name.opcode; 1698 packet[0] = opcode & 0xff; 1699 packet[1] = opcode >> 8; 1700 packet[2] = DEVICE_NAME_LEN; 1701 memset(&packet[3], 0, DEVICE_NAME_LEN); 1702 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1703 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1704 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1705 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1706 // expand '00:00:00:00:00:00' in name with bd_addr 1707 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1708 hci_send_prepared_cmd_packet(); 1709 } 1710 1711 static void gap_run_set_eir_data(void){ 1712 hci_reserve_packet_buffer(); 1713 uint8_t * packet = hci_stack->hci_packet_buffer; 1714 // construct HCI Command in-place and send 1715 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1716 uint16_t offset = 0; 1717 packet[offset++] = opcode & 0xff; 1718 packet[offset++] = opcode >> 8; 1719 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1720 packet[offset++] = 0; // FEC not required 1721 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1722 if (hci_stack->eir_data){ 1723 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1724 ad_context_t context; 1725 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1726 uint8_t data_type = ad_iterator_get_data_type(&context); 1727 uint8_t size = ad_iterator_get_data_len(&context); 1728 const uint8_t *data = ad_iterator_get_data(&context); 1729 // copy item 1730 packet[offset++] = size + 1; 1731 packet[offset++] = data_type; 1732 memcpy(&packet[offset], data, size); 1733 // update name item 1734 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1735 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1736 } 1737 offset += size; 1738 } 1739 } else { 1740 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1741 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1742 packet[offset++] = bytes_to_copy + 1; 1743 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1744 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1745 // expand '00:00:00:00:00:00' in name with bd_addr 1746 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1747 } 1748 hci_send_prepared_cmd_packet(); 1749 } 1750 1751 static void hci_run_gap_tasks_classic(void){ 1752 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1753 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1754 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1755 return; 1756 } 1757 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1758 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1759 gap_run_set_local_name(); 1760 return; 1761 } 1762 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1763 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1764 gap_run_set_eir_data(); 1765 return; 1766 } 1767 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1768 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1769 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1770 return; 1771 } 1772 // write page scan activity 1773 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1774 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1775 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1776 return; 1777 } 1778 // write page scan type 1779 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1780 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1781 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1782 return; 1783 } 1784 // write page timeout 1785 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1786 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1787 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1788 return; 1789 } 1790 // send scan enable 1791 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1792 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1793 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1794 return; 1795 } 1796 // send write scan activity 1797 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1798 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1799 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1800 return; 1801 } 1802 // send write inquiry transmit power level 1803 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1804 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1805 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1806 return; 1807 } 1808 } 1809 #endif 1810 1811 #ifndef HAVE_HOST_CONTROLLER_API 1812 1813 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1814 if (!hci_stack->config) return 0; 1815 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1816 return baud_rate; 1817 } 1818 1819 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1820 UNUSED(ds); 1821 1822 switch (hci_stack->substate){ 1823 case HCI_INIT_W4_SEND_RESET: 1824 log_info("Resend HCI Reset"); 1825 hci_stack->substate = HCI_INIT_SEND_RESET; 1826 hci_stack->num_cmd_packets = 1; 1827 hci_run(); 1828 break; 1829 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1830 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1831 if (hci_stack->hci_transport->reset_link){ 1832 hci_stack->hci_transport->reset_link(); 1833 } 1834 1835 /* fall through */ 1836 1837 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1838 log_info("Resend HCI Reset - CSR Warm Boot"); 1839 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1840 hci_stack->num_cmd_packets = 1; 1841 hci_run(); 1842 break; 1843 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1844 if (hci_stack->hci_transport->set_baudrate){ 1845 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1846 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1847 hci_stack->hci_transport->set_baudrate(baud_rate); 1848 } 1849 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1850 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1851 if (hci_stack->hci_transport->reset_link){ 1852 log_info("Link Reset"); 1853 hci_stack->hci_transport->reset_link(); 1854 } 1855 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1856 hci_run(); 1857 } 1858 break; 1859 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1860 // otherwise continue 1861 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1862 hci_send_cmd(&hci_read_local_supported_commands); 1863 break; 1864 default: 1865 break; 1866 } 1867 } 1868 #endif 1869 1870 static void hci_initializing_next_state(void){ 1871 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1872 } 1873 1874 static void hci_init_done(void){ 1875 // done. tell the app 1876 log_info("hci_init_done -> HCI_STATE_WORKING"); 1877 hci_stack->state = HCI_STATE_WORKING; 1878 hci_emit_state(); 1879 } 1880 1881 // assumption: hci_can_send_command_packet_now() == true 1882 static void hci_initializing_run(void){ 1883 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1884 1885 if (!hci_can_send_command_packet_now()) return; 1886 1887 #ifndef HAVE_HOST_CONTROLLER_API 1888 bool need_baud_change = hci_stack->config 1889 && hci_stack->chipset 1890 && hci_stack->chipset->set_baudrate_command 1891 && hci_stack->hci_transport->set_baudrate 1892 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1893 #endif 1894 1895 switch (hci_stack->substate){ 1896 case HCI_INIT_SEND_RESET: 1897 hci_state_reset(); 1898 1899 #ifndef HAVE_HOST_CONTROLLER_API 1900 // prepare reset if command complete not received in 100ms 1901 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1902 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1903 btstack_run_loop_add_timer(&hci_stack->timeout); 1904 #endif 1905 // send command 1906 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1907 hci_send_cmd(&hci_reset); 1908 break; 1909 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1910 hci_send_cmd(&hci_read_local_version_information); 1911 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1912 break; 1913 1914 #ifndef HAVE_HOST_CONTROLLER_API 1915 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1916 hci_state_reset(); 1917 // prepare reset if command complete not received in 100ms 1918 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1919 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1920 btstack_run_loop_add_timer(&hci_stack->timeout); 1921 // send command 1922 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1923 hci_send_cmd(&hci_reset); 1924 break; 1925 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1926 hci_state_reset(); 1927 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1928 hci_send_cmd(&hci_reset); 1929 break; 1930 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1931 hci_reserve_packet_buffer(); 1932 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1933 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1934 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1935 hci_send_prepared_cmd_packet(); 1936 break; 1937 } 1938 case HCI_INIT_SET_BD_ADDR: 1939 hci_reserve_packet_buffer(); 1940 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1941 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1942 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1943 hci_send_prepared_cmd_packet(); 1944 break; 1945 case HCI_INIT_SEND_READ_LOCAL_NAME: 1946 #ifdef ENABLE_CLASSIC 1947 hci_send_cmd(&hci_read_local_name); 1948 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1949 break; 1950 #endif 1951 /* fall through */ 1952 1953 case HCI_INIT_SEND_BAUD_CHANGE: 1954 if (need_baud_change) { 1955 hci_reserve_packet_buffer(); 1956 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1957 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1958 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1959 hci_send_prepared_cmd_packet(); 1960 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1961 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1962 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1963 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1964 btstack_run_loop_add_timer(&hci_stack->timeout); 1965 } 1966 break; 1967 } 1968 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1969 1970 /* fall through */ 1971 1972 case HCI_INIT_CUSTOM_INIT: 1973 case HCI_INIT_CUSTOM_PRE_INIT: 1974 // Custom initialization 1975 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1976 hci_reserve_packet_buffer(); 1977 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1978 bool send_cmd = false; 1979 switch (hci_stack->chipset_result){ 1980 case BTSTACK_CHIPSET_VALID_COMMAND: 1981 send_cmd = true; 1982 switch (hci_stack->substate){ 1983 case HCI_INIT_CUSTOM_INIT: 1984 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1985 break; 1986 case HCI_INIT_CUSTOM_PRE_INIT: 1987 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1988 break; 1989 default: 1990 btstack_assert(false); 1991 break; 1992 } 1993 break; 1994 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1995 send_cmd = true; 1996 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1997 log_info("CSR Warm Boot"); 1998 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1999 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2000 btstack_run_loop_add_timer(&hci_stack->timeout); 2001 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2002 && hci_stack->config 2003 && hci_stack->chipset 2004 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2005 && hci_stack->hci_transport->set_baudrate 2006 && hci_transport_uart_get_main_baud_rate()){ 2007 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2008 } else { 2009 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2010 } 2011 break; 2012 default: 2013 break; 2014 } 2015 2016 if (send_cmd){ 2017 hci_send_prepared_cmd_packet(); 2018 break; 2019 } else { 2020 hci_release_packet_buffer(); 2021 } 2022 log_info("Init script done"); 2023 2024 // Custom Pre-Init complete, start regular init with HCI Reset 2025 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2026 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2027 hci_send_cmd(&hci_reset); 2028 break; 2029 } 2030 2031 // Init script download on Broadcom chipsets causes: 2032 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2033 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2034 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2035 2036 // - baud rate to reset, restore UART baud rate if needed 2037 if (need_baud_change) { 2038 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2039 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2040 hci_stack->hci_transport->set_baudrate(baud_rate); 2041 } 2042 2043 uint16_t bcm_delay_ms = 300; 2044 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2045 // -> Work around: wait here. 2046 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2047 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2048 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2049 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2050 btstack_run_loop_add_timer(&hci_stack->timeout); 2051 break; 2052 } 2053 } 2054 #endif 2055 /* fall through */ 2056 2057 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2058 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2059 hci_send_cmd(&hci_read_local_supported_commands); 2060 break; 2061 case HCI_INIT_READ_BD_ADDR: 2062 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2063 hci_send_cmd(&hci_read_bd_addr); 2064 break; 2065 case HCI_INIT_READ_BUFFER_SIZE: 2066 // only read buffer size if supported 2067 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2068 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2069 hci_send_cmd(&hci_read_buffer_size); 2070 break; 2071 } 2072 2073 /* fall through */ 2074 2075 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2076 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2077 hci_send_cmd(&hci_read_local_supported_features); 2078 break; 2079 2080 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2081 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2082 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2083 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2084 break; 2085 case HCI_INIT_HOST_BUFFER_SIZE: 2086 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2087 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2088 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2089 break; 2090 #endif 2091 2092 case HCI_INIT_SET_EVENT_MASK: 2093 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2094 if (hci_le_supported()){ 2095 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2096 } else { 2097 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2098 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2099 } 2100 break; 2101 2102 case HCI_INIT_SET_EVENT_MASK_2: 2103 // On Bluetooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2104 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2105 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2106 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2107 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2108 // Encryption Change Event v2 - bit 25 2109 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2110 break; 2111 } 2112 2113 #ifdef ENABLE_CLASSIC 2114 /* fall through */ 2115 2116 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2117 if (hci_classic_supported() && gap_ssp_supported()){ 2118 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2119 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2120 break; 2121 } 2122 2123 /* fall through */ 2124 2125 case HCI_INIT_WRITE_INQUIRY_MODE: 2126 if (hci_classic_supported()){ 2127 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2128 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2129 break; 2130 } 2131 2132 /* fall through */ 2133 2134 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2135 // skip write secure connections host support if not supported or disabled 2136 if (hci_classic_supported() && hci_stack->secure_connections_enable 2137 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2138 hci_stack->secure_connections_active = true; 2139 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2140 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2141 break; 2142 } 2143 2144 /* fall through */ 2145 2146 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2147 // skip set min encryption key size 2148 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2149 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2150 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2151 break; 2152 } 2153 2154 #ifdef ENABLE_SCO_OVER_HCI 2155 /* fall through */ 2156 2157 // only sent if ENABLE_SCO_OVER_HCI is defined 2158 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2159 // skip write synchronous flow control if not supported 2160 if (hci_classic_supported() 2161 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2162 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2163 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2164 break; 2165 } 2166 /* fall through */ 2167 2168 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2169 // skip write default erroneous data reporting if not supported 2170 if (hci_classic_supported() 2171 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2172 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2173 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2174 break; 2175 } 2176 #endif 2177 2178 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2179 /* fall through */ 2180 2181 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2182 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2183 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2184 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2185 #ifdef ENABLE_SCO_OVER_HCI 2186 log_info("BCM: Route SCO data via HCI transport"); 2187 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2188 #endif 2189 #ifdef ENABLE_SCO_OVER_PCM 2190 log_info("BCM: Route SCO data via PCM interface"); 2191 #ifdef ENABLE_BCM_PCM_WBS 2192 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2193 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2194 #else 2195 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2196 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2197 #endif 2198 #endif 2199 break; 2200 } 2201 #endif 2202 2203 #ifdef ENABLE_SCO_OVER_PCM 2204 /* fall through */ 2205 2206 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2207 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2208 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2209 log_info("BCM: Config PCM interface for I2S"); 2210 #ifdef ENABLE_BCM_PCM_WBS 2211 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2212 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2213 #else 2214 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2215 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2216 #endif 2217 break; 2218 } 2219 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2220 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2221 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2222 log_info("BCM: Config PCM Data format"); 2223 // msb first, fill bits 0, left justified 2224 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2225 break; 2226 } 2227 #ifdef HAVE_BCM_PCM2 2228 case HCI_INIT_BCM_PCM2_SETUP: 2229 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2230 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2231 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2232 uint32_t pcm_clock_freq; 2233 uint8_t ch_0_period; 2234 #ifdef ENABLE_BCM_PCM_WBS 2235 // 512 kHz, resample 8 kHz to 16 khz 2236 pcm_clock_freq = 512000; 2237 ch_0_period = 1; 2238 #else 2239 // 256 khz, 8 khz output 2240 pcm_clock_freq = 256000; 2241 ch_0_period = 0; 2242 #endif 2243 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2244 hci_send_cmd(&hci_bcm_pcm2_setup, 2245 0x00, // Action = Write 2246 0x00, // Test_Options = None 2247 op_mode, // Op_Mode 2248 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2249 pcm_clock_freq, // PCM_Clock_Freq 2250 0x01, // Sync_Signal_Width 2251 0x0F, // Slot_Width 2252 0x01, // NumberOfSlots 2253 0x00, // Bank_0_Fill_Mode = 0s 2254 0x00, // Bank_0_Number_of_Fill_Bits 2255 0x00, // Bank_0_Programmable_Fill_Data 2256 0x00, // Bank_1_Fill_Mode = 0s 2257 0x00, // Bank_1_Number_of_Fill_Bits 2258 0x00, // Bank_1_Programmable_Fill_Data 2259 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2260 0x00, // Ch_0_Slot_Number 2261 0x01, // Ch_1_Slot_Number 2262 0x02, // Ch_2_Slot_Number 2263 0x03, // Ch_3_Slot_Number 2264 0x04, // Ch_4_Slot_Number 2265 ch_0_period, // Ch_0_Period 2266 0x00, // Ch_1_Period 2267 0x00 // Ch_2_Period 2268 ); 2269 break; 2270 } 2271 #endif 2272 #endif /* ENABLE_SCO_OVER_PCM */ 2273 #endif /* ENABLE_CLASSIC */ 2274 2275 #ifdef ENABLE_BLE 2276 /* fall through */ 2277 2278 // LE INIT 2279 case HCI_INIT_LE_READ_BUFFER_SIZE: 2280 if (hci_le_supported()){ 2281 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2282 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2283 hci_send_cmd(&hci_le_read_buffer_size_v2); 2284 } else { 2285 hci_send_cmd(&hci_le_read_buffer_size); 2286 } 2287 break; 2288 } 2289 2290 /* fall through */ 2291 2292 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2293 // skip write le host if not supported (e.g. on LE only EM9301) 2294 if (hci_le_supported() 2295 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2296 // LE Supported Host = 1, Simultaneous Host = 0 2297 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2298 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2299 break; 2300 } 2301 2302 /* fall through */ 2303 2304 case HCI_INIT_LE_SET_EVENT_MASK: 2305 if (hci_le_supported()){ 2306 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2307 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2308 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2309 #else 2310 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2311 #endif 2312 break; 2313 } 2314 #endif 2315 2316 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2317 /* fall through */ 2318 2319 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2320 if (hci_le_supported() 2321 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2322 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2323 hci_send_cmd(&hci_le_read_maximum_data_length); 2324 break; 2325 } 2326 2327 /* fall through */ 2328 2329 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2330 if (hci_le_supported() 2331 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2332 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2333 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2334 break; 2335 } 2336 #endif 2337 2338 #ifdef ENABLE_LE_CENTRAL 2339 /* fall through */ 2340 2341 case HCI_INIT_READ_WHITE_LIST_SIZE: 2342 if (hci_le_supported()){ 2343 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2344 hci_send_cmd(&hci_le_read_white_list_size); 2345 break; 2346 } 2347 2348 #endif 2349 2350 #ifdef ENABLE_LE_PERIPHERAL 2351 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2352 /* fall through */ 2353 2354 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2355 if (hci_le_extended_advertising_supported()){ 2356 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2357 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2358 break; 2359 } 2360 #endif 2361 #endif 2362 2363 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2364 /* fall through */ 2365 2366 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2367 if (hci_le_supported()) { 2368 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2369 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2370 break; 2371 } 2372 #endif 2373 2374 #ifdef ENABLE_BLE 2375 /* fall through */ 2376 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTION_SUBRATING: 2377 if (hci_le_supported()) { 2378 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTION_SUBRATING; 2379 hci_send_cmd(&hci_le_set_host_feature, 38, 1); 2380 break; 2381 } 2382 #endif 2383 /* fall through */ 2384 2385 case HCI_INIT_DONE: 2386 hci_stack->substate = HCI_INIT_DONE; 2387 // main init sequence complete 2388 #ifdef ENABLE_CLASSIC 2389 // check if initial Classic GAP Tasks are completed 2390 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2391 hci_run_gap_tasks_classic(); 2392 break; 2393 } 2394 #endif 2395 #ifdef ENABLE_BLE 2396 #ifdef ENABLE_LE_CENTRAL 2397 // check if initial LE GAP Tasks are completed 2398 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2399 hci_run_general_gap_le(); 2400 break; 2401 } 2402 #endif 2403 #endif 2404 hci_init_done(); 2405 break; 2406 2407 default: 2408 return; 2409 } 2410 } 2411 2412 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2413 bool command_completed = false; 2414 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2415 uint16_t opcode = little_endian_read_16(packet,3); 2416 if (opcode == hci_stack->last_cmd_opcode){ 2417 command_completed = true; 2418 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2419 } else { 2420 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2421 } 2422 } 2423 2424 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2425 uint8_t status = packet[2]; 2426 uint16_t opcode = little_endian_read_16(packet,4); 2427 if (opcode == hci_stack->last_cmd_opcode){ 2428 if (status){ 2429 command_completed = true; 2430 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2431 } else { 2432 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2433 } 2434 } else { 2435 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2436 } 2437 } 2438 #ifndef HAVE_HOST_CONTROLLER_API 2439 // Vendor == CSR 2440 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2441 // TODO: track actual command 2442 command_completed = true; 2443 } 2444 2445 // Vendor == Toshiba 2446 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2447 // TODO: track actual command 2448 command_completed = true; 2449 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2450 hci_stack->num_cmd_packets = 1; 2451 } 2452 #endif 2453 2454 return command_completed; 2455 } 2456 2457 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2458 2459 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2460 2461 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2462 2463 #ifndef HAVE_HOST_CONTROLLER_API 2464 2465 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2466 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2467 // 2468 // HCI Reset 2469 // Timeout 100 ms 2470 // HCI Reset 2471 // Command Complete Reset 2472 // HCI Read Local Version Information 2473 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2474 // hang... 2475 // 2476 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2477 if (!command_completed 2478 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2479 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2480 2481 uint16_t opcode = little_endian_read_16(packet,3); 2482 if (opcode == hci_reset.opcode){ 2483 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2484 return; 2485 } 2486 } 2487 2488 // CSR & H5 2489 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2490 if (!command_completed 2491 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2492 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2493 2494 uint16_t opcode = little_endian_read_16(packet,3); 2495 if (opcode == hci_reset.opcode){ 2496 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2497 return; 2498 } 2499 } 2500 2501 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2502 // fix: Correct substate and behave as command below 2503 if (command_completed){ 2504 switch (hci_stack->substate){ 2505 case HCI_INIT_SEND_RESET: 2506 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2507 break; 2508 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2509 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2510 break; 2511 default: 2512 break; 2513 } 2514 } 2515 2516 #endif 2517 2518 if (!command_completed) return; 2519 2520 bool need_baud_change = false; 2521 bool need_addr_change = false; 2522 2523 #ifndef HAVE_HOST_CONTROLLER_API 2524 need_baud_change = hci_stack->config 2525 && hci_stack->chipset 2526 && hci_stack->chipset->set_baudrate_command 2527 && hci_stack->hci_transport->set_baudrate 2528 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2529 2530 need_addr_change = hci_stack->custom_bd_addr_set 2531 && hci_stack->chipset 2532 && hci_stack->chipset->set_bd_addr_command; 2533 #endif 2534 2535 switch(hci_stack->substate){ 2536 2537 #ifndef HAVE_HOST_CONTROLLER_API 2538 case HCI_INIT_SEND_RESET: 2539 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2540 // fix: just correct substate and behave as command below 2541 2542 /* fall through */ 2543 #endif 2544 2545 case HCI_INIT_W4_SEND_RESET: 2546 btstack_run_loop_remove_timer(&hci_stack->timeout); 2547 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2548 return; 2549 2550 #ifndef HAVE_HOST_CONTROLLER_API 2551 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2552 // for STLC2500D, baud rate change already happened. 2553 // for others, baud rate gets changed now 2554 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2555 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2556 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2557 hci_stack->hci_transport->set_baudrate(baud_rate); 2558 } 2559 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2560 return; 2561 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2562 btstack_run_loop_remove_timer(&hci_stack->timeout); 2563 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2564 return; 2565 case HCI_INIT_W4_CUSTOM_INIT: 2566 // repeat custom init 2567 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2568 return; 2569 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2570 // repeat custom init 2571 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2572 return; 2573 #endif 2574 2575 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2576 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2577 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2578 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2579 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2580 return; 2581 } 2582 if (need_addr_change){ 2583 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2584 return; 2585 } 2586 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2587 return; 2588 #ifndef HAVE_HOST_CONTROLLER_API 2589 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2590 if (need_baud_change){ 2591 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2592 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2593 hci_stack->hci_transport->set_baudrate(baud_rate); 2594 } 2595 if (need_addr_change){ 2596 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2597 return; 2598 } 2599 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2600 return; 2601 case HCI_INIT_W4_SET_BD_ADDR: 2602 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2603 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2604 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2605 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2606 return; 2607 } 2608 // skipping st warm boot 2609 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2610 return; 2611 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2612 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2613 return; 2614 #endif 2615 2616 case HCI_INIT_DONE: 2617 // set state if we came here by fall through 2618 hci_stack->substate = HCI_INIT_DONE; 2619 return; 2620 2621 default: 2622 break; 2623 } 2624 hci_initializing_next_state(); 2625 } 2626 2627 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2628 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2629 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2630 // To prevent accidentally freeing the HCI connection for the ACL connection, 2631 // check if we have been aware of the HCI connection 2632 switch (conn->state){ 2633 case SENT_CREATE_CONNECTION: 2634 case RECEIVED_CONNECTION_REQUEST: 2635 case ACCEPTED_CONNECTION_REQUEST: 2636 break; 2637 default: 2638 return; 2639 } 2640 2641 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2642 bd_addr_t bd_address; 2643 (void)memcpy(&bd_address, conn->address, 6); 2644 2645 #ifdef ENABLE_CLASSIC 2646 // cache needed data 2647 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2648 #endif 2649 2650 // connection failed, remove entry 2651 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2652 btstack_memory_hci_connection_free( conn ); 2653 2654 #ifdef ENABLE_CLASSIC 2655 // notify client if dedicated bonding 2656 if (notify_dedicated_bonding_failed){ 2657 log_info("hci notify_dedicated_bonding_failed"); 2658 hci_emit_dedicated_bonding_result(bd_address, status); 2659 } 2660 2661 // if authentication error, also delete link key 2662 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2663 gap_drop_link_key_for_bd_addr(bd_address); 2664 } 2665 #else 2666 UNUSED(status); 2667 #endif 2668 } 2669 #endif 2670 2671 2672 #ifdef ENABLE_CLASSIC 2673 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2674 // SSP Controller 2675 if (features[6] & (1 << 3)){ 2676 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2677 } 2678 // eSCO 2679 if (features[3] & (1<<7)){ 2680 conn->remote_supported_features[0] |= 1; 2681 } 2682 // Extended features 2683 if (features[7] & (1<<7)){ 2684 conn->remote_supported_features[0] |= 2; 2685 } 2686 // SCO packet types 2687 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2688 } 2689 2690 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2691 // SSP Host 2692 if (features[0] & (1 << 0)){ 2693 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2694 } 2695 // SC Host 2696 if (features[0] & (1 << 3)){ 2697 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2698 } 2699 } 2700 2701 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2702 // SC Controller 2703 if (features[1] & (1 << 0)){ 2704 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2705 } 2706 } 2707 2708 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2709 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2710 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2711 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2712 if (conn->bonding_flags & BONDING_DEDICATED){ 2713 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2714 } 2715 } 2716 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2717 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2718 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2719 } 2720 2721 #endif 2722 2723 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2724 // handle BT initialization 2725 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2726 hci_initializing_event_handler(packet, size); 2727 } 2728 2729 // help with BT sleep 2730 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2731 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2732 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2733 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2734 hci_initializing_next_state(); 2735 } 2736 } 2737 2738 #ifdef ENABLE_CLASSIC 2739 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2740 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2741 conn->requested_security_level = LEVEL_0; 2742 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2743 hci_emit_security_level(conn->con_handle, security_level); 2744 2745 // dedicated bonding 2746 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2747 conn->bonding_flags &= ~BONDING_DEDICATED; 2748 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2749 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2750 // emit dedicated bonding complete, don't disconnect 2751 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2752 #else 2753 // request disconnect, event is emitted after disconnect 2754 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2755 #endif 2756 } 2757 } 2758 2759 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2760 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2761 conn->encryption_key_size = encryption_key_size; 2762 2763 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2764 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2765 hci_handle_mutual_authentication_completed(conn); 2766 } else { 2767 // otherwise trigger remote feature request and send authentication request 2768 hci_trigger_remote_features_for_connection(conn); 2769 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2770 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2771 } 2772 } 2773 } 2774 #endif 2775 2776 static void hci_store_local_supported_commands(const uint8_t * packet){ 2777 // create mapping table 2778 #define X(name, offset, bit) { offset, bit }, 2779 static struct { 2780 uint8_t byte_offset; 2781 uint8_t bit_position; 2782 } supported_hci_commands_map [] = { 2783 SUPPORTED_HCI_COMMANDS 2784 }; 2785 #undef X 2786 2787 // create names for debug purposes 2788 #ifdef ENABLE_LOG_DEBUG 2789 #define X(name, offset, bit) #name, 2790 static const char * command_names[] = { 2791 SUPPORTED_HCI_COMMANDS 2792 }; 2793 #undef X 2794 #endif 2795 2796 hci_stack->local_supported_commands = 0; 2797 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2798 uint16_t i; 2799 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2800 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2801 #ifdef ENABLE_LOG_DEBUG 2802 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); 2803 #else 2804 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2805 #endif 2806 hci_stack->local_supported_commands |= (1LU << i); 2807 } 2808 } 2809 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2810 } 2811 2812 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2813 UNUSED(size); 2814 2815 uint8_t status = 0; 2816 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2817 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2818 } 2819 uint16_t manufacturer; 2820 #ifdef ENABLE_CLASSIC 2821 hci_connection_t * conn; 2822 #endif 2823 #if defined(ENABLE_CLASSIC) 2824 hci_con_handle_t handle; 2825 #endif 2826 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2827 le_audio_cig_t * cig; 2828 #endif 2829 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2830 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2831 #endif 2832 2833 // get num cmd packets - limit to 1 to reduce complexity 2834 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2835 2836 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2837 switch (opcode){ 2838 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2839 if (status) break; 2840 // terminate, name 248 chars 2841 packet[6+248] = 0; 2842 log_info("local name: %s", &packet[6]); 2843 break; 2844 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2845 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2846 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2847 uint16_t acl_len = little_endian_read_16(packet, 6); 2848 uint16_t sco_len = packet[8]; 2849 2850 // determine usable ACL/SCO payload size 2851 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2852 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2853 2854 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2855 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2856 2857 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2858 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2859 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2860 } 2861 break; 2862 case HCI_OPCODE_HCI_READ_RSSI: 2863 if (status == ERROR_CODE_SUCCESS){ 2864 uint8_t event[5]; 2865 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2866 event[1] = 3; 2867 (void)memcpy(&event[2], &packet[6], 3); 2868 hci_emit_btstack_event(event, sizeof(event), 1); 2869 } 2870 break; 2871 #ifdef ENABLE_BLE 2872 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2873 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2874 hci_stack->le_iso_packets_total_num = packet[11]; 2875 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2876 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2877 2878 /* fall through */ 2879 2880 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2881 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2882 hci_stack->le_acl_packets_total_num = packet[8]; 2883 // determine usable ACL payload size 2884 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2885 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2886 } 2887 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); 2888 break; 2889 #endif 2890 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2891 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2892 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2893 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2894 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); 2895 break; 2896 #endif 2897 #ifdef ENABLE_LE_CENTRAL 2898 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2899 hci_stack->le_whitelist_capacity = packet[6]; 2900 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2901 break; 2902 #endif 2903 #ifdef ENABLE_LE_PERIPHERAL 2904 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2905 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2906 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2907 break; 2908 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 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 adv_status = packet[6]; 2914 uint8_t tx_power = packet[7]; 2915 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 }; 2916 if (adv_status == 0){ 2917 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2918 } 2919 hci_emit_btstack_event(event, sizeof(event), 1); 2920 } 2921 break; 2922 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2923 if (hci_stack->le_advertising_set_in_current_command != 0) { 2924 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2925 hci_stack->le_advertising_set_in_current_command = 0; 2926 if (advertising_set == NULL) break; 2927 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2928 if (status == 0){ 2929 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2930 } 2931 hci_emit_btstack_event(event, sizeof(event), 1); 2932 } 2933 break; 2934 #endif 2935 #endif 2936 case HCI_OPCODE_HCI_READ_BD_ADDR: 2937 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2938 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2939 #ifdef ENABLE_CLASSIC 2940 if (hci_stack->link_key_db){ 2941 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2942 } 2943 #endif 2944 break; 2945 #ifdef ENABLE_CLASSIC 2946 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2947 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2948 break; 2949 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2950 if (status == ERROR_CODE_SUCCESS) { 2951 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2952 } else { 2953 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2954 } 2955 break; 2956 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2957 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2958 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2959 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2960 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2961 hci_emit_btstack_event(event, sizeof(event), 1); 2962 } 2963 break; 2964 #endif 2965 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2966 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2967 2968 #ifdef ENABLE_CLASSIC 2969 // determine usable ACL packet types based on host buffer size and supported features 2970 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]); 2971 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2972 // determine usable SCO packet types based on supported features 2973 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2974 &hci_stack->local_supported_features[0]); 2975 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2976 #endif 2977 // Classic/LE 2978 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2979 break; 2980 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2981 manufacturer = little_endian_read_16(packet, 10); 2982 // map Cypress & Infineon to Broadcom 2983 switch (manufacturer){ 2984 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2985 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2986 log_info("Treat Cypress/Infineon as Broadcom"); 2987 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2988 little_endian_store_16(packet, 10, manufacturer); 2989 break; 2990 default: 2991 break; 2992 } 2993 hci_stack->manufacturer = manufacturer; 2994 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2995 break; 2996 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2997 hci_store_local_supported_commands(packet); 2998 break; 2999 #ifdef ENABLE_CLASSIC 3000 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 3001 if (status) return; 3002 hci_stack->synchronous_flow_control_enabled = 1; 3003 break; 3004 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 3005 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 3006 conn = hci_connection_for_handle(handle); 3007 if (conn != NULL) { 3008 uint8_t key_size = 0; 3009 if (status == 0){ 3010 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 3011 log_info("Handle %04x key Size: %u", handle, key_size); 3012 } else { 3013 key_size = 1; 3014 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3015 } 3016 hci_handle_read_encryption_key_size_complete(conn, key_size); 3017 } 3018 break; 3019 // assert pairing complete event is emitted. 3020 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3021 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3022 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3023 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3024 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3025 // lookup connection by gap pairing addr 3026 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3027 if (conn == NULL) break; 3028 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3029 break; 3030 3031 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3032 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3033 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3034 uint8_t event[67]; 3035 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3036 event[1] = 65; 3037 (void)memset(&event[2], 0, 65); 3038 if (status == ERROR_CODE_SUCCESS){ 3039 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3040 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3041 event[2] = 3; 3042 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3043 } else { 3044 event[2] = 1; 3045 } 3046 } 3047 hci_emit_btstack_event(event, sizeof(event), 0); 3048 break; 3049 } 3050 3051 // note: only needed if user does not provide OOB data 3052 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3053 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3054 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3055 if (conn == NULL) break; 3056 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3057 break; 3058 #endif 3059 #endif 3060 #ifdef ENABLE_BLE 3061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3062 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3063 // lookup CIG 3064 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3065 if (cig != NULL){ 3066 uint8_t i = 0; 3067 if (status == ERROR_CODE_SUCCESS){ 3068 // assign CIS handles to pre-allocated CIS 3069 btstack_linked_list_iterator_t it; 3070 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3071 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3072 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3073 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3074 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3075 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3076 iso_stream->cis_handle = cis_handle; 3077 cig->cis_con_handles[i] = cis_handle; 3078 i++; 3079 } 3080 } 3081 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3082 hci_emit_cig_created(cig, status); 3083 } else { 3084 hci_emit_cig_created(cig, status); 3085 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3086 } 3087 } 3088 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3089 break; 3090 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3091 if (status != ERROR_CODE_SUCCESS){ 3092 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3093 } 3094 break; 3095 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3096 if (status != ERROR_CODE_SUCCESS){ 3097 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3098 } 3099 break; 3100 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3101 // lookup BIG by state 3102 btstack_linked_list_iterator_t it; 3103 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3104 while (btstack_linked_list_iterator_has_next(&it)) { 3105 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3106 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3107 if (status == ERROR_CODE_SUCCESS){ 3108 big->state_vars.next_bis++; 3109 if (big->state_vars.next_bis == big->num_bis){ 3110 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3111 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3112 } else { 3113 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3114 } 3115 } else { 3116 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3117 big->state_vars.status = status; 3118 } 3119 return; 3120 } 3121 } 3122 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3123 while (btstack_linked_list_iterator_has_next(&it)) { 3124 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3125 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3126 if (status == ERROR_CODE_SUCCESS){ 3127 big_sync->state_vars.next_bis++; 3128 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3129 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3130 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3131 } else { 3132 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3133 } 3134 } else { 3135 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3136 big_sync->state_vars.status = status; 3137 } 3138 return; 3139 } 3140 } 3141 // Lookup CIS via active group operation 3142 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3143 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3144 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3145 3146 // lookup CIS by state 3147 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3148 while (btstack_linked_list_iterator_has_next(&it)){ 3149 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3150 bool emit_cis_created = false; 3151 switch (iso_stream->state){ 3152 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3153 if (status != ERROR_CODE_SUCCESS){ 3154 emit_cis_created = true; 3155 break; 3156 } 3157 if (iso_stream->max_sdu_c_to_p > 0){ 3158 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3159 } else { 3160 emit_cis_created = true; 3161 } 3162 break; 3163 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3164 emit_cis_created = true; 3165 break; 3166 default: 3167 break; 3168 } 3169 if (emit_cis_created){ 3170 hci_cis_handle_created(iso_stream, status); 3171 } 3172 } 3173 } else { 3174 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3175 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3176 if (cig != NULL) { 3177 // emit cis created if all ISO Paths have been created 3178 // assume we are central 3179 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3180 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3181 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3182 // if outgoing has been setup, or incoming was setup but outgoing not required 3183 if ((cis_direction == 1) || (outgoing_needed == false)){ 3184 // lookup iso stream by cig/cis 3185 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3186 while (btstack_linked_list_iterator_has_next(&it)) { 3187 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3188 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3189 hci_cis_handle_created(iso_stream, status); 3190 } 3191 } 3192 } 3193 // next state 3194 cig->state_vars.next_cis++; 3195 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3196 } 3197 } 3198 } 3199 break; 3200 } 3201 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3202 // lookup BIG by state 3203 btstack_linked_list_iterator_t it; 3204 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3205 while (btstack_linked_list_iterator_has_next(&it)) { 3206 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3207 uint8_t big_handle = big_sync->big_handle; 3208 switch (big_sync->state){ 3209 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3210 btstack_linked_list_iterator_remove(&it); 3211 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3212 return; 3213 default: 3214 btstack_linked_list_iterator_remove(&it); 3215 hci_emit_big_sync_stopped(big_handle); 3216 return; 3217 } 3218 } 3219 break; 3220 } 3221 #endif 3222 #endif 3223 default: 3224 break; 3225 } 3226 } 3227 3228 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3229 static void 3230 hci_iso_create_big_failed(const le_audio_big_t *big, uint8_t status) { 3231 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 3232 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3233 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3234 hci_emit_big_created(big, status); 3235 } else { 3236 hci_emit_big_terminated(big); 3237 } 3238 } 3239 3240 static void hci_iso_big_sync_failed(const le_audio_big_sync_t *big_sync, uint8_t status) { 3241 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3242 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3243 hci_emit_big_sync_created(big_sync, status); 3244 } else { 3245 hci_emit_big_sync_stopped(big_sync->big_handle); 3246 } 3247 } 3248 #endif 3249 3250 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3251 UNUSED(size); 3252 3253 // get num cmd packets - limit to 1 to reduce complexity 3254 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3255 3256 // get opcode and command status 3257 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3258 3259 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3260 uint8_t status = hci_event_command_status_get_status(packet); 3261 #endif 3262 3263 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3264 bd_addr_type_t addr_type; 3265 bd_addr_t addr; 3266 #endif 3267 3268 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3269 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3270 #endif 3271 3272 switch (opcode){ 3273 #ifdef ENABLE_CLASSIC 3274 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3275 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3276 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3277 #endif 3278 #ifdef ENABLE_LE_CENTRAL 3279 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3280 #endif 3281 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3282 addr_type = hci_stack->outgoing_addr_type; 3283 memcpy(addr, hci_stack->outgoing_addr, 6); 3284 3285 // reset outgoing address info 3286 memset(hci_stack->outgoing_addr, 0, 6); 3287 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3288 3289 // on error 3290 if (status != ERROR_CODE_SUCCESS){ 3291 #ifdef ENABLE_LE_CENTRAL 3292 if (hci_is_le_connection_type(addr_type)){ 3293 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3294 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3295 } 3296 #endif 3297 // error => outgoing connection failed 3298 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3299 if (conn != NULL){ 3300 hci_handle_connection_failed(conn, status); 3301 } 3302 } 3303 break; 3304 #endif 3305 #ifdef ENABLE_CLASSIC 3306 case HCI_OPCODE_HCI_INQUIRY: 3307 if (status == ERROR_CODE_SUCCESS) { 3308 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3309 } else { 3310 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3311 } 3312 break; 3313 #endif 3314 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3315 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3316 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3317 if (status == ERROR_CODE_SUCCESS){ 3318 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3319 } else { 3320 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3321 } 3322 break; 3323 case HCI_OPCODE_HCI_LE_CREATE_BIG: 3324 if (status != ERROR_CODE_SUCCESS){ 3325 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3326 // get current big 3327 le_audio_big_t * big = hci_big_for_handle(hci_stack->iso_active_operation_group_id); 3328 if (big != NULL){ 3329 hci_iso_create_big_failed(big, status); 3330 } 3331 } 3332 break; 3333 case HCI_OPCODE_HCI_LE_BIG_CREATE_SYNC: 3334 if (status != ERROR_CODE_SUCCESS){ 3335 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3336 // get current big sync 3337 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(hci_stack->iso_active_operation_group_id); 3338 if (big_sync != NULL){ 3339 hci_iso_big_sync_failed(big_sync, status); 3340 } 3341 } 3342 break; 3343 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3344 default: 3345 break; 3346 } 3347 } 3348 3349 #ifdef ENABLE_BLE 3350 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3351 gap_event[0] = HCI_EVENT_META_GAP; 3352 gap_event[1] = 36 - 2; 3353 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3354 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3355 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3356 memcpy(&gap_event[3], &hci_event[3], 11); 3357 memset(&gap_event[14], 0, 12); 3358 memcpy(&gap_event[26], &hci_event[14], 7); 3359 memset(&gap_event[33], 0xff, 3); 3360 // Some Controllers incorrectly report a resolved identity address in HCI_SUBEVENT_LE_CONNECTION_COMPLETE. 3361 // If an address is resolved, we're working with it, but this event does not provide it. 3362 // As a workaround, we map identity addresses to regular addresses. 3363 gap_event[7] = gap_event[7] & 1; 3364 break; 3365 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3366 memcpy(&gap_event[3], &hci_event[3], 30); 3367 memset(&gap_event[33], 0xff, 3); 3368 break; 3369 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3370 memcpy(&gap_event[3], &hci_event[3], 33); 3371 break; 3372 default: 3373 btstack_unreachable(); 3374 break; 3375 } 3376 } 3377 3378 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3379 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3380 uint8_t gap_event[36]; 3381 hci_create_gap_connection_complete_event(hci_event, gap_event); 3382 3383 // read fields 3384 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3385 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3386 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3387 3388 // Connection management 3389 bd_addr_t addr; 3390 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3391 bd_addr_type_t addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3392 hci_con_handle_t con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3393 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3394 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3395 3396 #ifdef ENABLE_LE_CENTRAL 3397 // handle error: error is reported only to the initiator -> outgoing connection 3398 if (status){ 3399 3400 // handle cancelled outgoing connection 3401 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3402 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3403 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3404 bool connection_was_cancelled = false; 3405 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3406 connection_was_cancelled = true; 3407 // reset state 3408 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3409 // get outgoing connection conn struct for direct connect 3410 conn = gap_get_outgoing_le_connection(); 3411 // prepare restart if still active 3412 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3413 conn->state = SEND_CREATE_CONNECTION; 3414 } 3415 } 3416 3417 // free connection if cancelled by user (request == IDLE) 3418 bool cancelled_by_user = hci_stack->le_connecting_request == LE_CONNECTING_IDLE; 3419 if ((conn != NULL) && cancelled_by_user){ 3420 // remove entry 3421 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3422 btstack_memory_hci_connection_free( conn ); 3423 } 3424 3425 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for: 3426 // - outgoing error not caused by connection cancel 3427 // - connection cancelled by user 3428 // by this, no event is emitted for intermediate connection cancel required filterlist modification 3429 if ((connection_was_cancelled == false) || cancelled_by_user){ 3430 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3431 } 3432 return; 3433 } 3434 #endif 3435 3436 // on success, both hosts receive connection complete event 3437 if (role == HCI_ROLE_MASTER){ 3438 #ifdef ENABLE_LE_CENTRAL 3439 // if we're master, it was an outgoing connection 3440 // note: no hci_connection_t object exists yet for connect with whitelist 3441 3442 // if an identity addresses was used without enhanced connection complete event, 3443 // the connection complete event contains the current random address of the peer device. 3444 // This random address is needed in the case of a re-pairing 3445 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3446 conn = gap_get_outgoing_le_connection(); 3447 // if outgoing connection object is available, check if identity address was used. 3448 // if yes, track resolved random address and provide rpa 3449 // note: we don't update hci le subevent connection complete 3450 if (conn != NULL){ 3451 if (hci_is_le_identity_address_type(conn->address_type)){ 3452 memcpy(&gap_event[20], &gap_event[8], 6); 3453 gap_event[7] = conn->address_type; 3454 reverse_bd_addr(conn->address, &gap_event[8]); 3455 } 3456 } 3457 } 3458 3459 // we're done with it 3460 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3461 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3462 #endif 3463 } else { 3464 #ifdef ENABLE_LE_PERIPHERAL 3465 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3466 if (hci_le_extended_advertising_supported()) { 3467 // advertisement state managed with HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED 3468 3469 // if advertisement set terminated event arrives before connection complete, connection struct has been prepared 3470 // set missing peer address + address type 3471 conn = hci_connection_for_handle(con_handle); 3472 if (conn != NULL){ 3473 memcpy(conn->address, addr, 6); 3474 conn->address_type = addr_type; 3475 } 3476 } 3477 else 3478 #endif 3479 { 3480 // if we're slave, it was an incoming connection and advertisements have stopped 3481 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3482 } 3483 #endif 3484 } 3485 3486 // LE connections are auto-accepted, so just create a connection if there isn't one already 3487 if (!conn){ 3488 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3489 } 3490 3491 // no memory, sorry. 3492 if (!conn){ 3493 return; 3494 } 3495 3496 conn->state = OPEN; 3497 conn->con_handle = con_handle; 3498 conn->le_connection_interval = conn_interval; 3499 3500 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3501 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3502 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3503 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3504 } 3505 #endif 3506 3507 #ifdef ENABLE_LE_PERIPHERAL 3508 if (role == HCI_ROLE_SLAVE){ 3509 hci_update_advertisements_enabled_for_current_roles(); 3510 } 3511 #endif 3512 3513 // init unenhanced att bearer mtu 3514 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3515 conn->att_connection.mtu_exchanged = false; 3516 3517 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3518 3519 // restart timer 3520 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3521 // btstack_run_loop_add_timer(&conn->timeout); 3522 3523 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3524 3525 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3526 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3527 3528 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3529 hci_emit_nr_connections_changed(); 3530 } 3531 #endif 3532 3533 #ifdef ENABLE_CLASSIC 3534 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){ 3535 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3536 // LEVEL_4 is tested by l2cap 3537 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3538 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3539 if (level >= LEVEL_3){ 3540 // MITM not possible without keyboard or display 3541 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3542 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3543 3544 // MITM possible if one side has keyboard and the other has keyboard or display 3545 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3546 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3547 3548 // MITM not possible if one side has only display and other side has no keyboard 3549 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3550 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3551 } 3552 // LEVEL 2 requires SSP, which is a given 3553 return true; 3554 } 3555 3556 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3557 // get requested security level 3558 gap_security_level_t requested_security_level = conn->requested_security_level; 3559 if (hci_stack->gap_secure_connections_only_mode){ 3560 requested_security_level = LEVEL_4; 3561 } 3562 3563 // assess security: LEVEL 4 requires SC 3564 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3565 if ((requested_security_level == LEVEL_4) && 3566 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3567 !hci_remote_sc_enabled(conn)){ 3568 log_info("Level 4 required, but SC not supported -> abort"); 3569 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3570 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3571 return; 3572 } 3573 3574 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3575 // - GAP/MOD/NBON/BV-02-C 3576 // - GAP/DM/NBON/BV-01-C 3577 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3578 switch (conn->io_cap_response_auth_req){ 3579 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3580 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3581 if (hci_stack->bondable == false){ 3582 log_info("Dedicated vs. non-bondable -> abort"); 3583 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3584 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3585 return; 3586 } 3587 default: 3588 break; 3589 } 3590 } 3591 3592 // assess security based on io capabilities 3593 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3594 // responder: fully validate io caps of both sides as well as OOB data 3595 bool security_possible = false; 3596 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3597 3598 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3599 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3600 // so we merge the OOB data availability 3601 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3602 if (conn->classic_oob_c_192 != NULL){ 3603 have_oob_data |= 1; 3604 } 3605 if (conn->classic_oob_c_256 != NULL){ 3606 have_oob_data |= 2; 3607 } 3608 // for up to Level 3, either P-192 as well as P-256 will do 3609 // 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 3610 // if remote does not SC, we should not receive P-256 data either 3611 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3612 security_possible = true; 3613 } 3614 // for Level 4, P-256 is needed 3615 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3616 security_possible = true; 3617 } 3618 #endif 3619 3620 if (security_possible == false){ 3621 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3622 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3623 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3624 return; 3625 } 3626 } else { 3627 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3628 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3629 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3630 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3631 log_info("Level 3+ required, but no input/output -> abort"); 3632 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3633 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3634 return; 3635 } 3636 #endif 3637 #endif 3638 } 3639 3640 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3641 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3642 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3643 } else { 3644 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3645 } 3646 #endif 3647 } 3648 3649 #endif 3650 3651 static void event_handler(uint8_t *packet, uint16_t size){ 3652 3653 uint16_t event_length = packet[1]; 3654 3655 // assert packet is complete 3656 if (size != (event_length + 2u)){ 3657 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3658 return; 3659 } 3660 3661 hci_con_handle_t handle; 3662 hci_connection_t * conn; 3663 int i; 3664 3665 #ifdef ENABLE_CLASSIC 3666 hci_link_type_t link_type; 3667 bd_addr_t addr; 3668 bd_addr_type_t addr_type; 3669 #endif 3670 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3671 hci_iso_stream_t * iso_stream; 3672 le_audio_big_t * big; 3673 le_audio_big_sync_t * big_sync; 3674 #endif 3675 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3676 btstack_linked_list_iterator_t it; 3677 #endif 3678 #if defined(ENABLE_LE_EXTENDED_ADVERTISING) && defined(ENABLE_LE_CENTRAL) 3679 uint8_t advertising_handle; 3680 #endif 3681 3682 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3683 3684 switch (hci_event_packet_get_type(packet)) { 3685 3686 case HCI_EVENT_COMMAND_COMPLETE: 3687 handle_command_complete_event(packet, size); 3688 break; 3689 3690 case HCI_EVENT_COMMAND_STATUS: 3691 handle_command_status_event(packet, size); 3692 break; 3693 3694 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3695 if (size < 3) return; 3696 uint16_t num_handles = packet[2]; 3697 if (size != (3u + num_handles * 4u)) return; 3698 #ifdef ENABLE_CLASSIC 3699 bool notify_sco = false; 3700 #endif 3701 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3702 bool notify_iso = false; 3703 #endif 3704 uint16_t offset = 3; 3705 for (i=0; i<num_handles;i++){ 3706 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3707 offset += 2u; 3708 uint16_t num_packets = little_endian_read_16(packet, offset); 3709 offset += 2u; 3710 3711 conn = hci_connection_for_handle(handle); 3712 if (conn != NULL) { 3713 3714 if (conn->num_packets_sent >= num_packets) { 3715 conn->num_packets_sent -= num_packets; 3716 } else { 3717 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3718 conn->num_packets_sent = 0; 3719 } 3720 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3721 #ifdef ENABLE_CLASSIC 3722 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3723 notify_sco = true; 3724 } 3725 #endif 3726 } 3727 3728 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3729 hci_controller_dump_packets(); 3730 #endif 3731 3732 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3733 if (conn == NULL){ 3734 iso_stream = hci_iso_stream_for_con_handle(handle); 3735 if (iso_stream != NULL){ 3736 if (iso_stream->num_packets_sent >= num_packets) { 3737 iso_stream->num_packets_sent -= num_packets; 3738 } else { 3739 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3740 iso_stream->num_packets_sent = 0; 3741 } 3742 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3743 big = hci_big_for_handle(iso_stream->group_id); 3744 if (big != NULL){ 3745 big->num_completed_timestamp_current_valid = true; 3746 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3747 } 3748 } 3749 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3750 num_packets, handle, iso_stream->num_packets_sent); 3751 notify_iso = true; 3752 } 3753 } 3754 #endif 3755 } 3756 3757 #ifdef ENABLE_CLASSIC 3758 if (notify_sco){ 3759 hci_notify_if_sco_can_send_now(); 3760 } 3761 #endif 3762 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3763 if (notify_iso){ 3764 hci_iso_notify_can_send_now(); 3765 } 3766 #endif 3767 break; 3768 } 3769 3770 #ifdef ENABLE_CLASSIC 3771 case HCI_EVENT_FLUSH_OCCURRED: 3772 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3773 handle = hci_event_flush_occurred_get_handle(packet); 3774 conn = hci_connection_for_handle(handle); 3775 if (conn) { 3776 log_info("Flush occurred, disconnect 0x%04x", handle); 3777 conn->state = SEND_DISCONNECT; 3778 } 3779 break; 3780 3781 case HCI_EVENT_INQUIRY_COMPLETE: 3782 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3783 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3784 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3785 hci_emit_btstack_event(event, sizeof(event), 1); 3786 } 3787 break; 3788 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3789 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3790 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3791 } 3792 break; 3793 case HCI_EVENT_CONNECTION_REQUEST: 3794 reverse_bd_addr(&packet[2], addr); 3795 link_type = (hci_link_type_t) packet[11]; 3796 3797 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3798 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3799 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3800 bd_addr_copy(hci_stack->decline_addr, addr); 3801 break; 3802 } 3803 3804 if (hci_stack->gap_classic_accept_callback != NULL){ 3805 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3806 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3807 bd_addr_copy(hci_stack->decline_addr, addr); 3808 break; 3809 } 3810 } 3811 3812 // TODO: eval COD 8-10 3813 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3814 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3815 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3816 if (!conn) { 3817 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3818 } 3819 if (!conn) { 3820 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3821 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3822 bd_addr_copy(hci_stack->decline_addr, addr); 3823 hci_run(); 3824 // avoid event to higher layer 3825 return; 3826 } 3827 conn->state = RECEIVED_CONNECTION_REQUEST; 3828 // store info about eSCO 3829 if (link_type == HCI_LINK_TYPE_ESCO){ 3830 conn->remote_supported_features[0] |= 1; 3831 } 3832 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3833 if (addr_type == BD_ADDR_TYPE_SCO){ 3834 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3835 // ACL exists unless fuzzing 3836 if (acl_conn != NULL) { 3837 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3838 } 3839 } 3840 hci_run(); 3841 break; 3842 3843 case HCI_EVENT_CONNECTION_COMPLETE: 3844 // Connection management 3845 reverse_bd_addr(&packet[5], addr); 3846 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3847 addr_type = BD_ADDR_TYPE_ACL; 3848 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3849 if (conn) { 3850 switch (conn->state){ 3851 // expected states 3852 case ACCEPTED_CONNECTION_REQUEST: 3853 case SENT_CREATE_CONNECTION: 3854 break; 3855 // unexpected state -> ignore 3856 default: 3857 // don't forward event to app 3858 return; 3859 } 3860 if (!packet[2]){ 3861 conn->state = OPEN; 3862 conn->con_handle = little_endian_read_16(packet, 3); 3863 3864 // trigger write supervision timeout if we're master 3865 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3866 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3867 } 3868 3869 // trigger write automatic flush timeout 3870 if (hci_stack->automatic_flush_timeout != 0){ 3871 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3872 } 3873 3874 // restart timer 3875 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3876 btstack_run_loop_add_timer(&conn->timeout); 3877 3878 // trigger remote features for dedicated bonding 3879 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3880 hci_trigger_remote_features_for_connection(conn); 3881 } 3882 3883 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3884 3885 hci_emit_nr_connections_changed(); 3886 } else { 3887 // connection failed 3888 hci_handle_connection_failed(conn, packet[2]); 3889 } 3890 } 3891 break; 3892 3893 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3894 reverse_bd_addr(&packet[5], addr); 3895 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3896 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3897 3898 // SCO exists unless fuzzer 3899 if (conn == NULL) break; 3900 3901 if (packet[2] != ERROR_CODE_SUCCESS){ 3902 // connection failed, remove entry 3903 hci_handle_connection_failed(conn, packet[2]); 3904 break; 3905 } 3906 3907 conn->state = OPEN; 3908 conn->con_handle = little_endian_read_16(packet, 3); 3909 3910 // update sco payload length for eSCO connections 3911 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3912 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3913 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3914 } 3915 3916 #ifdef ENABLE_SCO_OVER_HCI 3917 // update SCO 3918 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3919 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3920 } 3921 // trigger can send now 3922 if (hci_have_usb_transport()){ 3923 hci_stack->sco_can_send_now = true; 3924 } 3925 3926 // setup implicit sco flow control 3927 conn->sco_tx_ready = 0; 3928 conn->sco_tx_active = 0; 3929 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3930 3931 #endif 3932 #ifdef HAVE_SCO_TRANSPORT 3933 // configure sco transport 3934 if (hci_stack->sco_transport != NULL){ 3935 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3936 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3937 } 3938 #endif 3939 break; 3940 3941 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3942 handle = little_endian_read_16(packet, 3); 3943 conn = hci_connection_for_handle(handle); 3944 if (!conn) break; 3945 if (!packet[2]){ 3946 const uint8_t * features = &packet[5]; 3947 hci_handle_remote_features_page_0(conn, features); 3948 3949 // read extended features if possible 3950 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3951 && ((conn->remote_supported_features[0] & 2) != 0)) { 3952 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3953 break; 3954 } 3955 } 3956 hci_handle_remote_features_received(conn); 3957 break; 3958 3959 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3960 handle = little_endian_read_16(packet, 3); 3961 conn = hci_connection_for_handle(handle); 3962 if (!conn) break; 3963 // status = ok, page = 1 3964 if (!packet[2]) { 3965 uint8_t page_number = packet[5]; 3966 uint8_t maximum_page_number = packet[6]; 3967 const uint8_t * features = &packet[7]; 3968 bool done = false; 3969 switch (page_number){ 3970 case 1: 3971 hci_handle_remote_features_page_1(conn, features); 3972 if (maximum_page_number >= 2){ 3973 // get Secure Connections (Controller) from Page 2 if available 3974 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3975 } else { 3976 // otherwise, assume SC (Controller) == SC (Host) 3977 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3978 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3979 } 3980 done = true; 3981 } 3982 break; 3983 case 2: 3984 hci_handle_remote_features_page_2(conn, features); 3985 done = true; 3986 break; 3987 default: 3988 break; 3989 } 3990 if (!done) break; 3991 } 3992 hci_handle_remote_features_received(conn); 3993 break; 3994 3995 case HCI_EVENT_LINK_KEY_REQUEST: 3996 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3997 hci_event_link_key_request_get_bd_addr(packet, addr); 3998 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3999 if (!conn) break; 4000 4001 // lookup link key in db if not cached 4002 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 4003 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 4004 } 4005 4006 // response sent by hci_run() 4007 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 4008 #endif 4009 break; 4010 4011 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 4012 hci_event_link_key_request_get_bd_addr(packet, addr); 4013 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4014 if (!conn) break; 4015 4016 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 4017 4018 // CVE-2020-26555: ignore NULL link key 4019 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 4020 if (btstack_is_null(&packet[8], 16)) break; 4021 4022 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 4023 // Change Connection Encryption keeps link key type 4024 if (link_key_type != CHANGED_COMBINATION_KEY){ 4025 conn->link_key_type = link_key_type; 4026 } 4027 4028 // cache link key. link keys stored in little-endian format for legacy reasons 4029 memcpy(&conn->link_key, &packet[8], 16); 4030 4031 // only store link key: 4032 // - if bondable enabled 4033 if (hci_stack->bondable == false) break; 4034 // - if at least one side requests bonding during the IO Capabilities exchange. 4035 // Note: we drop bonding flag in acceptor role if remote doesn't request it 4036 bool bonding_local = conn->io_cap_request_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 4037 bool bonding_remote = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 4038 if ((bonding_local == false) && (bonding_remote == false)) break; 4039 // - if security level sufficient 4040 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 4041 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 4042 break; 4043 } 4044 4045 case HCI_EVENT_PIN_CODE_REQUEST: 4046 hci_event_pin_code_request_get_bd_addr(packet, addr); 4047 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4048 if (!conn) break; 4049 4050 hci_pairing_started(conn, false); 4051 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 4052 if (!hci_stack->bondable ){ 4053 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4054 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 4055 hci_run(); 4056 return; 4057 } 4058 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 4059 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 4060 log_info("Level 4 required, but SC not supported -> abort"); 4061 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4062 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4063 hci_run(); 4064 return; 4065 } 4066 break; 4067 4068 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 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_RESPONSE); 4074 hci_pairing_started(conn, true); 4075 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 4076 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 4077 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4078 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 4079 #endif 4080 break; 4081 4082 case HCI_EVENT_IO_CAPABILITY_REQUEST: 4083 hci_event_io_capability_response_get_bd_addr(packet, addr); 4084 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4085 if (!conn) break; 4086 4087 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4088 hci_connection_timestamp(conn); 4089 hci_pairing_started(conn, true); 4090 break; 4091 4092 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4093 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4094 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4095 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4096 if (!conn) break; 4097 4098 hci_connection_timestamp(conn); 4099 4100 hci_pairing_started(conn, true); 4101 4102 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4103 break; 4104 #endif 4105 4106 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4107 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4108 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4109 if (!conn) break; 4110 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4111 if (hci_stack->ssp_auto_accept){ 4112 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4113 }; 4114 } else { 4115 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4116 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4117 // don't forward event to app 4118 hci_run(); 4119 return; 4120 } 4121 break; 4122 4123 case HCI_EVENT_USER_PASSKEY_REQUEST: 4124 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4125 if (hci_stack->ssp_auto_accept){ 4126 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4127 }; 4128 break; 4129 4130 case HCI_EVENT_MODE_CHANGE: 4131 handle = hci_event_mode_change_get_handle(packet); 4132 conn = hci_connection_for_handle(handle); 4133 if (!conn) break; 4134 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4135 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4136 break; 4137 #endif 4138 4139 case HCI_EVENT_ENCRYPTION_CHANGE: 4140 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4141 handle = hci_event_encryption_change_get_connection_handle(packet); 4142 conn = hci_connection_for_handle(handle); 4143 if (!conn) break; 4144 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4145 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4146 if (encryption_enabled){ 4147 if (hci_is_le_connection(conn)){ 4148 // For LE, we accept connection as encrypted 4149 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4150 } 4151 #ifdef ENABLE_CLASSIC 4152 else { 4153 4154 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4155 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4156 bool connected_uses_aes_ccm = encryption_enabled == 2; 4157 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4158 #ifdef ENABLE_TESTING_SUPPORT 4159 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4160 // - GAP/SEC/SEM/BI-31-C 4161 // - GAP/SEC/SEM/BI-32-C 4162 // - GAP/SEC/SEM/BI-33-C 4163 4164 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4165 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4166 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4167 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4168 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4169 } 4170 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4171 conn->link_key_type, new_link_key_type); 4172 conn->link_key_type = new_link_key_type; 4173 #else 4174 log_info("SC during pairing, but only E0 now -> abort"); 4175 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4176 break; 4177 #endif 4178 } 4179 4180 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4181 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4182 if (connected_uses_aes_ccm){ 4183 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4184 } 4185 #else 4186 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4187 // with encryption key size > hci_stack->gap_required_encryption_key_size 4188 // for all operations that require any security. See BIAS attacks. 4189 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4190 #endif 4191 // validate encryption key size 4192 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4193 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4194 // already got encryption key size 4195 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4196 } else { 4197 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4198 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4199 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4200 } else { 4201 // if not, pretend everything is perfect 4202 hci_handle_read_encryption_key_size_complete(conn, 16); 4203 } 4204 } 4205 } 4206 #endif 4207 } else { 4208 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4209 } 4210 } else { 4211 #ifdef ENABLE_CLASSIC 4212 if (!hci_is_le_connection(conn)){ 4213 uint8_t status = hci_event_encryption_change_get_status(packet); 4214 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4215 conn->bonding_flags &= ~BONDING_DEDICATED; 4216 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4217 conn->bonding_status = status; 4218 } 4219 // trigger security update -> level 0 4220 hci_handle_mutual_authentication_completed(conn); 4221 } 4222 #endif 4223 } 4224 4225 break; 4226 4227 #ifdef ENABLE_CLASSIC 4228 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4229 handle = hci_event_authentication_complete_get_connection_handle(packet); 4230 conn = hci_connection_for_handle(handle); 4231 if (!conn) break; 4232 4233 // clear authentication active flag 4234 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4235 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4236 4237 // authenticated only if auth status == 0 4238 if (hci_event_authentication_complete_get_status(packet) == 0){ 4239 // authenticated 4240 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4241 4242 // If not already encrypted, start encryption 4243 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4244 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4245 break; 4246 } 4247 } 4248 4249 // emit updated security level (will be 0 if not authenticated) 4250 hci_handle_mutual_authentication_completed(conn); 4251 break; 4252 4253 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4254 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4255 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4256 if (!conn) break; 4257 4258 // treat successfully paired connection as authenticated 4259 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4260 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4261 } 4262 4263 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4264 break; 4265 #endif 4266 4267 // HCI_EVENT_DISCONNECTION_COMPLETE 4268 // has been split, to first notify stack before shutting connection down 4269 // see end of function, too. 4270 case HCI_EVENT_DISCONNECTION_COMPLETE: 4271 if (packet[2]) break; // status != 0 4272 handle = little_endian_read_16(packet, 3); 4273 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4274 if (hci_stack->acl_fragmentation_total_size > 0u) { 4275 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4276 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4277 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4278 hci_stack->acl_fragmentation_total_size = 0; 4279 hci_stack->acl_fragmentation_pos = 0; 4280 if (release_buffer){ 4281 hci_release_packet_buffer(); 4282 } 4283 } 4284 } 4285 4286 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4287 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4288 if (hci_stack->iso_fragmentation_total_size > 0u) { 4289 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4290 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4291 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4292 hci_stack->iso_fragmentation_total_size = 0; 4293 hci_stack->iso_fragmentation_pos = 0; 4294 if (release_buffer){ 4295 hci_release_packet_buffer(); 4296 } 4297 } 4298 } 4299 4300 // finalize iso stream for CIS handle 4301 iso_stream = hci_iso_stream_for_con_handle(handle); 4302 if (iso_stream != NULL){ 4303 hci_iso_stream_finalize(iso_stream); 4304 break; 4305 } 4306 #endif 4307 4308 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4309 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4310 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4311 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4312 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4313 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4314 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4315 hci_stack->num_cmd_packets = 1; 4316 } 4317 #endif 4318 4319 conn = hci_connection_for_handle(handle); 4320 if (!conn) break; 4321 #ifdef ENABLE_CLASSIC 4322 // pairing failed if it was ongoing 4323 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4324 #endif 4325 4326 // emit dedicated bonding event 4327 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4328 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4329 } 4330 4331 // mark connection for shutdown, stop timers, reset state 4332 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4333 hci_connection_stop_timer(conn); 4334 hci_connection_init(conn); 4335 4336 #ifdef ENABLE_BLE 4337 #ifdef ENABLE_LE_PERIPHERAL 4338 // re-enable advertisements for le connections if active 4339 if (hci_is_le_connection(conn)){ 4340 hci_update_advertisements_enabled_for_current_roles(); 4341 } 4342 #endif 4343 #endif 4344 break; 4345 4346 case HCI_EVENT_HARDWARE_ERROR: 4347 log_error("Hardware Error: 0x%02x", packet[2]); 4348 if (hci_stack->hardware_error_callback){ 4349 (*hci_stack->hardware_error_callback)(packet[2]); 4350 } else { 4351 // if no special requests, just reboot stack 4352 hci_power_control_off(); 4353 hci_power_control_on(); 4354 } 4355 break; 4356 4357 #ifdef ENABLE_CLASSIC 4358 case HCI_EVENT_ROLE_CHANGE: 4359 if (packet[2]) break; // status != 0 4360 reverse_bd_addr(&packet[3], addr); 4361 addr_type = BD_ADDR_TYPE_ACL; 4362 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4363 if (!conn) break; 4364 conn->role = (hci_role_t) packet[9]; 4365 break; 4366 #endif 4367 4368 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4369 // release packet buffer only for asynchronous transport and if there are not further fragments 4370 if (hci_transport_synchronous()) { 4371 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4372 return; // instead of break: to avoid re-entering hci_run() 4373 } 4374 hci_stack->acl_fragmentation_tx_active = 0; 4375 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4376 hci_stack->iso_fragmentation_tx_active = 0; 4377 if (hci_stack->iso_fragmentation_total_size) break; 4378 #endif 4379 if (hci_stack->acl_fragmentation_total_size) break; 4380 4381 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4382 hci_stack->hci_packet_buffer_reserved = false; 4383 4384 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4385 hci_iso_notify_can_send_now(); 4386 #endif 4387 // L2CAP receives this event via the hci_emit_event below 4388 4389 #ifdef ENABLE_CLASSIC 4390 // For SCO, we do the can_send_now_check here 4391 hci_notify_if_sco_can_send_now(); 4392 #endif 4393 break; 4394 4395 #ifdef ENABLE_CLASSIC 4396 case HCI_EVENT_SCO_CAN_SEND_NOW: 4397 // For SCO, we do the can_send_now_check here 4398 hci_stack->sco_can_send_now = true; 4399 hci_notify_if_sco_can_send_now(); 4400 return; 4401 4402 // explode inquiry results for easier consumption 4403 case HCI_EVENT_INQUIRY_RESULT: 4404 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4405 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4406 gap_inquiry_explode(packet, size); 4407 break; 4408 #endif 4409 4410 #ifdef ENABLE_BLE 4411 case HCI_EVENT_LE_META: 4412 switch (packet[2]){ 4413 #ifdef ENABLE_LE_CENTRAL 4414 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4415 if (!hci_stack->le_scanning_enabled) break; 4416 le_handle_advertisement_report(packet, size); 4417 break; 4418 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4419 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4420 if (!hci_stack->le_scanning_enabled) break; 4421 le_handle_extended_advertisement_report(packet, size); 4422 break; 4423 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4424 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4425 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4426 break; 4427 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4428 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4429 if (advertising_handle == LE_EXTENDED_ADVERTISING_LEGACY_HANDLE){ 4430 // legacy advertisements 4431 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4432 hci_update_advertisements_enabled_for_current_roles(); 4433 } else { 4434 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4435 while (btstack_linked_list_iterator_has_next(&it)) { 4436 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4437 if (advertising_set->advertising_handle == advertising_handle){ 4438 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4439 } 4440 } 4441 } 4442 // event may come before le connection complete and announces new connection 4443 if (hci_subevent_le_advertising_set_terminated_get_status(packet) == ERROR_CODE_SUCCESS){ 4444 handle = hci_subevent_le_advertising_set_terminated_get_connection_handle(packet); 4445 conn = hci_connection_for_handle(handle); 4446 if (conn == NULL){ 4447 // use placeholder address for peer, will be overwritten in hci_handle_le_connection_complete_event() 4448 bd_addr_t addr; 4449 memset(addr, 0, 6); 4450 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_UNKNOWN, HCI_ROLE_SLAVE); 4451 if (conn != NULL){ 4452 conn->state = ANNOUNCED; 4453 conn->con_handle = handle; 4454 } 4455 } 4456 } 4457 break; 4458 #endif 4459 #endif 4460 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4461 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4462 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4463 hci_handle_le_connection_complete_event(packet); 4464 break; 4465 4466 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4467 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4468 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4469 conn = hci_connection_for_handle(handle); 4470 if (!conn) break; 4471 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4472 break; 4473 4474 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4475 // connection 4476 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4477 conn = hci_connection_for_handle(handle); 4478 if (conn) { 4479 // read arguments 4480 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4481 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4482 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4483 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4484 4485 // validate against current connection parameter range 4486 le_connection_parameter_range_t existing_range; 4487 gap_get_connection_parameter_range(&existing_range); 4488 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4489 if (update_parameter){ 4490 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4491 conn->le_conn_interval_min = le_conn_interval_min; 4492 conn->le_conn_interval_max = le_conn_interval_max; 4493 conn->le_conn_latency = le_conn_latency; 4494 conn->le_supervision_timeout = le_supervision_timeout; 4495 } else { 4496 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4497 } 4498 } 4499 break; 4500 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4501 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4502 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4503 conn = hci_connection_for_handle(handle); 4504 if (conn) { 4505 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4506 } 4507 break; 4508 #endif 4509 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4510 case HCI_SUBEVENT_LE_CIS_REQUEST: 4511 // incoming CIS request, allocate iso stream object and cache metadata 4512 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4513 hci_subevent_le_cis_request_get_cig_id(packet), 4514 hci_subevent_le_cis_request_get_cis_id(packet)); 4515 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4516 if (iso_stream != NULL){ 4517 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4518 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4519 } 4520 break; 4521 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4522 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4523 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4524 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4525 iso_stream = hci_iso_stream_for_con_handle(handle); 4526 btstack_assert(iso_stream != NULL); 4527 // track connection info 4528 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4529 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4530 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4531 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4532 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4533 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4534 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4535 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4536 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4537 // CIS Accept by Peripheral 4538 if (status == ERROR_CODE_SUCCESS){ 4539 if (iso_stream->max_sdu_p_to_c > 0){ 4540 // we're peripheral and we will send data 4541 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4542 } else { 4543 // we're peripheral and we will only receive data 4544 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4545 } 4546 } else { 4547 hci_cis_handle_created(iso_stream, status); 4548 } 4549 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4550 } else { 4551 // CIG Setup by Central 4552 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4553 btstack_assert(cig != NULL); 4554 // update iso stream state 4555 if (status == ERROR_CODE_SUCCESS){ 4556 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4557 } else { 4558 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4559 } 4560 // update cig state 4561 for (i=0;i<cig->num_cis;i++){ 4562 if (cig->cis_con_handles[i] == handle){ 4563 cig->cis_setup_active[i] = false; 4564 if (status == ERROR_CODE_SUCCESS){ 4565 cig->cis_established[i] = true; 4566 } else { 4567 hci_cis_handle_created(iso_stream, status); 4568 } 4569 } 4570 } 4571 4572 // trigger iso path setup if complete 4573 bool cis_setup_active = false; 4574 for (i=0;i<cig->num_cis;i++){ 4575 cis_setup_active |= cig->cis_setup_active[i]; 4576 } 4577 if (cis_setup_active == false){ 4578 cig->state_vars.next_cis = 0; 4579 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4580 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4581 } 4582 } 4583 } 4584 break; 4585 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4586 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4587 big = hci_big_for_handle(packet[4]); 4588 if (big != NULL){ 4589 uint8_t status = packet[3]; 4590 if (status == ERROR_CODE_SUCCESS){ 4591 // store bis_con_handles and trigger iso path setup 4592 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4593 4594 for (i=0;i<num_bis;i++){ 4595 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4596 big->bis_con_handles[i] = bis_handle; 4597 // assign bis handle 4598 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4599 while (btstack_linked_list_iterator_has_next(&it)){ 4600 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4601 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4602 (iso_stream->group_id == big->big_handle)){ 4603 iso_stream->cis_handle = bis_handle; 4604 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4605 break; 4606 } 4607 } 4608 } 4609 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4610 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4611 big->state_vars.next_bis = 0; 4612 } 4613 } else { 4614 // create BIG failed or has been stopped by us 4615 hci_iso_create_big_failed(big, status); 4616 } 4617 } 4618 break; 4619 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4620 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4621 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4622 if (big != NULL){ 4623 // finalize associated ISO streams 4624 4625 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4626 while (btstack_linked_list_iterator_has_next(&it)){ 4627 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4628 if (iso_stream->group_id == big->big_handle){ 4629 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4630 btstack_linked_list_iterator_remove(&it); 4631 btstack_memory_hci_iso_stream_free(iso_stream); 4632 } 4633 } 4634 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4635 switch (big->state){ 4636 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4637 hci_emit_big_created(big, big->state_vars.status); 4638 break; 4639 default: 4640 hci_emit_big_terminated(big); 4641 break; 4642 } 4643 } 4644 break; 4645 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4646 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4647 big_sync = hci_big_sync_for_handle(packet[4]); 4648 if (big_sync != NULL){ 4649 uint8_t status = packet[3]; 4650 if (status == ERROR_CODE_SUCCESS){ 4651 // store bis_con_handles and trigger iso path setup 4652 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4653 for (i=0;i<num_bis;i++){ 4654 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4655 big_sync->bis_con_handles[i] = bis_handle; 4656 // setup iso_stream_t 4657 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4658 while (btstack_linked_list_iterator_has_next(&it)){ 4659 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4660 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4661 (iso_stream->group_id == big_sync->big_handle)){ 4662 iso_stream->cis_handle = bis_handle; 4663 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4664 break; 4665 } 4666 } 4667 } 4668 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4669 // trigger iso path setup 4670 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4671 big_sync->state_vars.next_bis = 0; 4672 } 4673 } else { 4674 // create BIG Sync failed or has been stopped by us 4675 hci_iso_big_sync_failed(big_sync, status); 4676 } 4677 } 4678 break; 4679 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4680 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4681 big_sync = hci_big_sync_for_handle(packet[4]); 4682 if (big_sync != NULL){ 4683 uint8_t big_handle = packet[4]; 4684 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4685 hci_emit_big_sync_stopped(big_handle); 4686 } 4687 break; 4688 #endif 4689 default: 4690 break; 4691 } 4692 break; 4693 #endif 4694 case HCI_EVENT_VENDOR_SPECIFIC: 4695 // Vendor specific commands often create vendor specific event instead of num completed packets 4696 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4697 switch (hci_stack->manufacturer){ 4698 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4699 hci_stack->num_cmd_packets = 1; 4700 break; 4701 default: 4702 break; 4703 } 4704 break; 4705 default: 4706 break; 4707 } 4708 4709 handle_event_for_current_stack_state(packet, size); 4710 4711 // notify upper stack 4712 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4713 4714 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4715 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4716 handle = little_endian_read_16(packet, 3); 4717 hci_connection_t * aConn = hci_connection_for_handle(handle); 4718 // discard connection if app did not trigger a reconnect in the event handler 4719 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4720 hci_shutdown_connection(aConn); 4721 } 4722 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4723 hci_controller_dump_packets(); 4724 #endif 4725 } 4726 4727 // execute main loop 4728 hci_run(); 4729 } 4730 4731 #ifdef ENABLE_CLASSIC 4732 4733 static void sco_handler(uint8_t * packet, uint16_t size){ 4734 // lookup connection struct 4735 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4736 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4737 if (!conn) return; 4738 4739 #ifdef ENABLE_SCO_OVER_HCI 4740 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4741 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4742 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4743 packet[2] = 0x3c; 4744 memmove(&packet[3], &packet[23], 63); 4745 size = 63; 4746 } 4747 } 4748 4749 if (hci_have_usb_transport()){ 4750 // Nothing to do 4751 } else { 4752 // 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); 4753 if (hci_stack->synchronous_flow_control_enabled == 0){ 4754 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4755 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4756 if (conn->sco_tx_active == 0){ 4757 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4758 conn->sco_tx_active = 1; 4759 conn->sco_tx_ready = max_sco_packets; 4760 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4761 hci_notify_if_sco_can_send_now(); 4762 } 4763 } else { 4764 if (conn->sco_tx_ready < max_sco_packets){ 4765 conn->sco_tx_ready++; 4766 } 4767 hci_notify_if_sco_can_send_now(); 4768 } 4769 } 4770 } 4771 #endif 4772 4773 // deliver to app 4774 if (hci_stack->sco_packet_handler) { 4775 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4776 } 4777 4778 #ifdef HAVE_SCO_TRANSPORT 4779 // We can send one packet for each received packet 4780 conn->sco_tx_ready++; 4781 hci_notify_if_sco_can_send_now(); 4782 #endif 4783 4784 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4785 conn->num_packets_completed++; 4786 hci_stack->host_completed_packets = 1; 4787 hci_run(); 4788 #endif 4789 } 4790 #endif 4791 4792 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4793 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4794 // propagate ISO packets received as ACL 4795 hci_iso_stream_t * iso_stream = NULL; 4796 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4797 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4798 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4799 if (iso_stream != NULL){ 4800 packet_type = HCI_ISO_DATA_PACKET; 4801 } 4802 } 4803 #endif 4804 4805 // don't log internal events unless requested 4806 bool internal_event = (packet_type == HCI_EVENT_PACKET) && (hci_event_packet_get_type(packet) >= BTSTACK_EVENT_FIRST); 4807 bool log_packet = internal_event == false; 4808 #ifdef ENABLE_LOG_BTSTACK_EVENTS 4809 log_packet = true; 4810 #endif 4811 if (log_packet){ 4812 hci_dump_packet(packet_type, 1, packet, size); 4813 } 4814 4815 switch (packet_type) { 4816 case HCI_EVENT_PACKET: 4817 event_handler(packet, size); 4818 break; 4819 case HCI_ACL_DATA_PACKET: 4820 acl_handler(packet, size); 4821 break; 4822 #ifdef ENABLE_CLASSIC 4823 case HCI_SCO_DATA_PACKET: 4824 sco_handler(packet, size); 4825 break; 4826 #endif 4827 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4828 case HCI_ISO_DATA_PACKET: 4829 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4830 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4831 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4832 } 4833 hci_iso_packet_handler(iso_stream, packet, size); 4834 break; 4835 #endif 4836 default: 4837 break; 4838 } 4839 } 4840 4841 /** 4842 * @brief Add event packet handler. 4843 */ 4844 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4845 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4846 } 4847 4848 /** 4849 * @brief Remove event packet handler. 4850 */ 4851 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4852 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4853 } 4854 4855 /** Register HCI packet handlers */ 4856 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4857 hci_stack->acl_packet_handler = handler; 4858 } 4859 4860 #ifdef ENABLE_CLASSIC 4861 /** 4862 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4863 */ 4864 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4865 hci_stack->sco_packet_handler = handler; 4866 } 4867 #endif 4868 4869 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4870 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4871 hci_stack->iso_packet_handler = handler; 4872 } 4873 #endif 4874 4875 static void hci_state_reset(void){ 4876 // no connections yet 4877 hci_stack->connections = NULL; 4878 4879 // keep discoverable/connectable as this has been requested by the client(s) 4880 // hci_stack->discoverable = 0; 4881 // hci_stack->connectable = 0; 4882 // hci_stack->bondable = 1; 4883 // hci_stack->own_addr_type = 0; 4884 4885 // buffer is free 4886 hci_stack->hci_packet_buffer_reserved = false; 4887 4888 // no pending cmds 4889 hci_stack->decline_reason = 0; 4890 4891 hci_stack->secure_connections_active = false; 4892 4893 #ifdef ENABLE_CLASSIC 4894 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4895 4896 hci_stack->gap_tasks_classic = 4897 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4898 GAP_TASK_SET_CLASS_OF_DEVICE | 4899 GAP_TASK_SET_LOCAL_NAME | 4900 GAP_TASK_SET_EIR_DATA | 4901 GAP_TASK_WRITE_SCAN_ENABLE | 4902 GAP_TASK_WRITE_PAGE_TIMEOUT; 4903 #endif 4904 4905 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4906 hci_stack->classic_read_local_oob_data = false; 4907 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4908 #endif 4909 4910 // LE 4911 #ifdef ENABLE_BLE 4912 memset(hci_stack->le_random_address, 0, 6); 4913 hci_stack->le_random_address_set = 0; 4914 #endif 4915 #ifdef ENABLE_LE_CENTRAL 4916 hci_stack->le_scanning_active = false; 4917 hci_stack->le_scanning_param_update = true; 4918 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4919 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4920 hci_stack->le_whitelist_capacity = 0; 4921 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4922 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4923 #endif 4924 #endif 4925 #ifdef ENABLE_LE_PERIPHERAL 4926 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4927 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4928 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4929 } 4930 if (hci_stack->le_advertisements_data != NULL){ 4931 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4932 } 4933 #endif 4934 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4935 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4936 #endif 4937 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4938 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4939 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4940 #endif 4941 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4942 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4943 #endif 4944 } 4945 4946 #ifdef ENABLE_CLASSIC 4947 /** 4948 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4949 */ 4950 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4951 // store and open remote device db 4952 hci_stack->link_key_db = link_key_db; 4953 if (hci_stack->link_key_db) { 4954 hci_stack->link_key_db->open(); 4955 } 4956 } 4957 #endif 4958 4959 void hci_init(const hci_transport_t *transport, const void *config){ 4960 4961 #ifdef HAVE_MALLOC 4962 if (!hci_stack) { 4963 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4964 } 4965 btstack_assert(hci_stack != NULL); 4966 #else 4967 hci_stack = &hci_stack_static; 4968 #endif 4969 memset(hci_stack, 0, sizeof(hci_stack_t)); 4970 4971 // reference to use transport layer implementation 4972 hci_stack->hci_transport = transport; 4973 4974 // reference to used config 4975 hci_stack->config = config; 4976 4977 // setup pointer for outgoing packet buffer 4978 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4979 4980 // max acl payload size defined in config.h 4981 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4982 4983 // register packet handlers with transport 4984 transport->register_packet_handler(&packet_handler); 4985 4986 hci_stack->state = HCI_STATE_OFF; 4987 4988 // class of device 4989 hci_stack->class_of_device = 0x007a020c; // Smartphone 4990 4991 // bondable by default 4992 hci_stack->bondable = 1; 4993 4994 #ifdef ENABLE_CLASSIC 4995 // classic name 4996 hci_stack->local_name = default_classic_name; 4997 4998 // Master slave policy 4999 hci_stack->master_slave_policy = 1; 5000 5001 // Allow Role Switch 5002 hci_stack->allow_role_switch = 1; 5003 5004 // Default / minimum security level = 2 5005 hci_stack->gap_security_level = LEVEL_2; 5006 5007 // Default Security Mode 4 5008 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 5009 5010 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 5011 hci_stack->gap_required_encyrption_key_size = 7; 5012 5013 // Link Supervision Timeout 5014 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 5015 5016 // Page Timeout 5017 hci_stack->page_timeout = 0x6000; // ca. 15 sec 5018 5019 // All ACL packet types are enabled 5020 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 5021 #endif 5022 5023 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 5024 hci_stack->ssp_enable = 1; 5025 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 5026 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5027 hci_stack->ssp_auto_accept = 1; 5028 5029 // Secure Connections: enable (requires support from Controller) 5030 hci_stack->secure_connections_enable = true; 5031 5032 // voice setting - signed 16 bit pcm data with CVSD over the air 5033 hci_stack->sco_voice_setting = 0x60; 5034 5035 #ifdef ENABLE_BLE 5036 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 5037 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 5038 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 5039 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 5040 hci_stack->le_connection_latency = 4; // 4 5041 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 5042 hci_stack->le_minimum_ce_length = 0; // 0 ms 5043 hci_stack->le_maximum_ce_length = 0; // 0 ms 5044 #endif 5045 5046 #ifdef ENABLE_LE_CENTRAL 5047 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 5048 5049 // default LE Scanning 5050 hci_stack->le_scan_type = 0x01; // active 5051 hci_stack->le_scan_interval = 0x1e0; // 300 ms 5052 hci_stack->le_scan_window = 0x30; // 30 ms 5053 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 5054 #endif 5055 5056 #ifdef ENABLE_LE_PERIPHERAL 5057 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 5058 5059 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 5060 hci_stack->le_advertisements_interval_min = 0x0800; 5061 hci_stack->le_advertisements_interval_max = 0x0800; 5062 hci_stack->le_advertisements_type = 0; 5063 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 5064 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 5065 hci_stack->le_advertisements_channel_map = 0x07; 5066 hci_stack->le_advertisements_filter_policy = 0; 5067 #endif 5068 5069 // connection parameter range used to answer connection parameter update requests in l2cap 5070 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 5071 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 5072 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 5073 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 5074 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 5075 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 5076 5077 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5078 hci_stack->iso_packets_to_queue = 1; 5079 #endif 5080 5081 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5082 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5083 #endif 5084 5085 hci_state_reset(); 5086 } 5087 5088 void hci_deinit(void){ 5089 btstack_run_loop_remove_timer(&hci_stack->timeout); 5090 #ifdef HAVE_MALLOC 5091 if (hci_stack) { 5092 free(hci_stack); 5093 } 5094 #endif 5095 hci_stack = NULL; 5096 5097 #ifdef ENABLE_CLASSIC 5098 disable_l2cap_timeouts = 0; 5099 #endif 5100 } 5101 5102 /** 5103 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5104 */ 5105 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5106 hci_stack->chipset = chipset_driver; 5107 5108 // reset chipset driver - init is also called on power_up 5109 if (hci_stack->chipset && hci_stack->chipset->init){ 5110 hci_stack->chipset->init(hci_stack->config); 5111 } 5112 } 5113 5114 void hci_enable_custom_pre_init(void){ 5115 hci_stack->chipset_pre_init = true; 5116 } 5117 5118 /** 5119 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5120 */ 5121 void hci_set_control(const btstack_control_t *hardware_control){ 5122 // references to used control implementation 5123 hci_stack->control = hardware_control; 5124 // init with transport config 5125 hardware_control->init(hci_stack->config); 5126 } 5127 5128 static void hci_discard_connections(void){ 5129 btstack_linked_list_iterator_t it; 5130 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5131 while (btstack_linked_list_iterator_has_next(&it)){ 5132 // cancel all l2cap connections by emitting disconnection complete before shutdown (free) connection 5133 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5134 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5135 hci_shutdown_connection(connection); 5136 } 5137 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5138 while (hci_stack->iso_streams != NULL){ 5139 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5140 } 5141 #endif 5142 } 5143 5144 void hci_close(void){ 5145 5146 #ifdef ENABLE_CLASSIC 5147 // close remote device db 5148 if (hci_stack->link_key_db) { 5149 hci_stack->link_key_db->close(); 5150 } 5151 #endif 5152 5153 hci_discard_connections(); 5154 5155 hci_power_control(HCI_POWER_OFF); 5156 5157 #ifdef HAVE_MALLOC 5158 free(hci_stack); 5159 #endif 5160 hci_stack = NULL; 5161 } 5162 5163 #ifdef HAVE_SCO_TRANSPORT 5164 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5165 hci_stack->sco_transport = sco_transport; 5166 sco_transport->register_packet_handler(&packet_handler); 5167 } 5168 #endif 5169 5170 #ifdef ENABLE_CLASSIC 5171 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5172 // validate range and set 5173 if (encryption_key_size < 7) return; 5174 if (encryption_key_size > 16) return; 5175 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5176 } 5177 5178 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5179 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5180 hci_stack->gap_security_mode = security_mode; 5181 return ERROR_CODE_SUCCESS; 5182 } else { 5183 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5184 } 5185 } 5186 5187 gap_security_mode_t gap_get_security_mode(void){ 5188 return hci_stack->gap_security_mode; 5189 } 5190 5191 void gap_set_security_level(gap_security_level_t security_level){ 5192 hci_stack->gap_security_level = security_level; 5193 } 5194 5195 gap_security_level_t gap_get_security_level(void){ 5196 if (hci_stack->gap_secure_connections_only_mode){ 5197 return LEVEL_4; 5198 } 5199 return hci_stack->gap_security_level; 5200 } 5201 5202 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5203 hci_stack->gap_minimal_service_security_level = security_level; 5204 } 5205 5206 void gap_set_secure_connections_only_mode(bool enable){ 5207 hci_stack->gap_secure_connections_only_mode = enable; 5208 } 5209 5210 bool gap_get_secure_connections_only_mode(void){ 5211 return hci_stack->gap_secure_connections_only_mode; 5212 } 5213 #endif 5214 5215 #ifdef ENABLE_CLASSIC 5216 void gap_set_class_of_device(uint32_t class_of_device){ 5217 hci_stack->class_of_device = class_of_device; 5218 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5219 hci_run(); 5220 } 5221 5222 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5223 hci_stack->default_link_policy_settings = default_link_policy_settings; 5224 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5225 hci_run(); 5226 } 5227 5228 void gap_set_allow_role_switch(bool allow_role_switch){ 5229 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5230 } 5231 5232 uint8_t hci_get_allow_role_switch(void){ 5233 return hci_stack->allow_role_switch; 5234 } 5235 5236 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5237 hci_stack->link_supervision_timeout = link_supervision_timeout; 5238 } 5239 5240 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5241 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5242 } 5243 5244 uint16_t hci_automatic_flush_timeout(void){ 5245 return hci_stack->automatic_flush_timeout; 5246 } 5247 5248 void hci_disable_l2cap_timeout_check(void){ 5249 disable_l2cap_timeouts = 1; 5250 } 5251 #endif 5252 5253 #ifndef HAVE_HOST_CONTROLLER_API 5254 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5255 void hci_set_bd_addr(bd_addr_t addr){ 5256 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5257 hci_stack->custom_bd_addr_set = 1; 5258 } 5259 #endif 5260 5261 // State-Module-Driver overview 5262 // state module low-level 5263 // HCI_STATE_OFF off close 5264 // HCI_STATE_INITIALIZING, on open 5265 // HCI_STATE_WORKING, on open 5266 // HCI_STATE_HALTING, on open 5267 // HCI_STATE_SLEEPING, off/sleep close 5268 // HCI_STATE_FALLING_ASLEEP on open 5269 5270 static int hci_power_control_on(void){ 5271 5272 // power on 5273 int err = 0; 5274 if (hci_stack->control && hci_stack->control->on){ 5275 err = (*hci_stack->control->on)(); 5276 } 5277 if (err){ 5278 log_error( "POWER_ON failed"); 5279 hci_emit_hci_open_failed(); 5280 return err; 5281 } 5282 5283 // int chipset driver 5284 if (hci_stack->chipset && hci_stack->chipset->init){ 5285 hci_stack->chipset->init(hci_stack->config); 5286 } 5287 5288 // init transport 5289 if (hci_stack->hci_transport->init){ 5290 hci_stack->hci_transport->init(hci_stack->config); 5291 } 5292 5293 // open transport 5294 err = hci_stack->hci_transport->open(); 5295 if (err){ 5296 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5297 if (hci_stack->control && hci_stack->control->off){ 5298 (*hci_stack->control->off)(); 5299 } 5300 hci_emit_hci_open_failed(); 5301 return err; 5302 } 5303 return 0; 5304 } 5305 5306 static void hci_power_control_off(void){ 5307 5308 log_info("hci_power_control_off"); 5309 5310 // close low-level device 5311 hci_stack->hci_transport->close(); 5312 5313 log_info("hci_power_control_off - hci_transport closed"); 5314 5315 // power off 5316 if (hci_stack->control && hci_stack->control->off){ 5317 (*hci_stack->control->off)(); 5318 } 5319 5320 log_info("hci_power_control_off - control closed"); 5321 5322 hci_stack->state = HCI_STATE_OFF; 5323 } 5324 5325 static void hci_power_control_sleep(void){ 5326 5327 log_info("hci_power_control_sleep"); 5328 5329 #if 0 5330 // don't close serial port during sleep 5331 5332 // close low-level device 5333 hci_stack->hci_transport->close(hci_stack->config); 5334 #endif 5335 5336 // sleep mode 5337 if (hci_stack->control && hci_stack->control->sleep){ 5338 (*hci_stack->control->sleep)(); 5339 } 5340 5341 hci_stack->state = HCI_STATE_SLEEPING; 5342 } 5343 5344 static int hci_power_control_wake(void){ 5345 5346 log_info("hci_power_control_wake"); 5347 5348 // wake on 5349 if (hci_stack->control && hci_stack->control->wake){ 5350 (*hci_stack->control->wake)(); 5351 } 5352 5353 #if 0 5354 // open low-level device 5355 int err = hci_stack->hci_transport->open(hci_stack->config); 5356 if (err){ 5357 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5358 if (hci_stack->control && hci_stack->control->off){ 5359 (*hci_stack->control->off)(); 5360 } 5361 hci_emit_hci_open_failed(); 5362 return err; 5363 } 5364 #endif 5365 5366 return 0; 5367 } 5368 5369 static void hci_power_enter_initializing_state(void){ 5370 // set up state machine 5371 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5372 hci_stack->hci_packet_buffer_reserved = false; 5373 hci_stack->state = HCI_STATE_INITIALIZING; 5374 5375 #ifndef HAVE_HOST_CONTROLLER_API 5376 if (hci_stack->chipset_pre_init) { 5377 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5378 } else 5379 #endif 5380 { 5381 hci_stack->substate = HCI_INIT_SEND_RESET; 5382 } 5383 } 5384 5385 static void hci_power_enter_halting_state(void){ 5386 #ifdef ENABLE_BLE 5387 // drop entries scheduled for removal, mark others for re-adding 5388 btstack_linked_list_iterator_t it; 5389 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5390 while (btstack_linked_list_iterator_has_next(&it)){ 5391 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5392 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5393 btstack_linked_list_iterator_remove(&it); 5394 btstack_memory_whitelist_entry_free(entry); 5395 } else { 5396 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5397 } 5398 } 5399 #ifdef ENABLE_LE_CENTRAL 5400 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5401 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5402 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5403 while (btstack_linked_list_iterator_has_next(&it)){ 5404 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5405 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5406 btstack_linked_list_iterator_remove(&it); 5407 btstack_memory_periodic_advertiser_list_entry_free(entry); 5408 } else { 5409 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5410 continue; 5411 } 5412 } 5413 #endif 5414 #endif 5415 #endif 5416 // see hci_run 5417 hci_stack->state = HCI_STATE_HALTING; 5418 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5419 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5420 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5421 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5422 btstack_run_loop_add_timer(&hci_stack->timeout); 5423 } 5424 5425 // returns error 5426 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5427 int err; 5428 switch (power_mode){ 5429 case HCI_POWER_ON: 5430 err = hci_power_control_on(); 5431 if (err != 0) { 5432 log_error("hci_power_control_on() error %d", err); 5433 return err; 5434 } 5435 hci_power_enter_initializing_state(); 5436 break; 5437 case HCI_POWER_OFF: 5438 // do nothing 5439 break; 5440 case HCI_POWER_SLEEP: 5441 // do nothing (with SLEEP == OFF) 5442 break; 5443 default: 5444 btstack_assert(false); 5445 break; 5446 } 5447 return ERROR_CODE_SUCCESS; 5448 } 5449 5450 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5451 switch (power_mode){ 5452 case HCI_POWER_ON: 5453 // do nothing 5454 break; 5455 case HCI_POWER_OFF: 5456 // no connections yet, just turn it off 5457 hci_power_control_off(); 5458 break; 5459 case HCI_POWER_SLEEP: 5460 // no connections yet, just turn it off 5461 hci_power_control_sleep(); 5462 break; 5463 default: 5464 btstack_assert(false); 5465 break; 5466 } 5467 return ERROR_CODE_SUCCESS; 5468 } 5469 5470 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5471 switch (power_mode){ 5472 case HCI_POWER_ON: 5473 // do nothing 5474 break; 5475 case HCI_POWER_OFF: 5476 hci_power_enter_halting_state(); 5477 break; 5478 case HCI_POWER_SLEEP: 5479 // see hci_run 5480 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5481 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5482 break; 5483 default: 5484 btstack_assert(false); 5485 break; 5486 } 5487 return ERROR_CODE_SUCCESS; 5488 } 5489 5490 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5491 switch (power_mode){ 5492 case HCI_POWER_ON: 5493 hci_power_enter_initializing_state(); 5494 break; 5495 case HCI_POWER_OFF: 5496 // do nothing 5497 break; 5498 case HCI_POWER_SLEEP: 5499 // see hci_run 5500 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5501 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5502 break; 5503 default: 5504 btstack_assert(false); 5505 break; 5506 } 5507 return ERROR_CODE_SUCCESS; 5508 } 5509 5510 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5511 switch (power_mode){ 5512 case HCI_POWER_ON: 5513 hci_power_enter_initializing_state(); 5514 break; 5515 case HCI_POWER_OFF: 5516 hci_power_enter_halting_state(); 5517 break; 5518 case HCI_POWER_SLEEP: 5519 // do nothing 5520 break; 5521 default: 5522 btstack_assert(false); 5523 break; 5524 } 5525 return ERROR_CODE_SUCCESS; 5526 } 5527 5528 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5529 int err; 5530 switch (power_mode){ 5531 case HCI_POWER_ON: 5532 err = hci_power_control_wake(); 5533 if (err) return err; 5534 hci_power_enter_initializing_state(); 5535 break; 5536 case HCI_POWER_OFF: 5537 hci_power_enter_halting_state(); 5538 break; 5539 case HCI_POWER_SLEEP: 5540 // do nothing 5541 break; 5542 default: 5543 btstack_assert(false); 5544 break; 5545 } 5546 return ERROR_CODE_SUCCESS; 5547 } 5548 5549 int hci_power_control(HCI_POWER_MODE power_mode){ 5550 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5551 btstack_run_loop_remove_timer(&hci_stack->timeout); 5552 int err = 0; 5553 switch (hci_stack->state){ 5554 case HCI_STATE_OFF: 5555 err = hci_power_control_state_off(power_mode); 5556 break; 5557 case HCI_STATE_INITIALIZING: 5558 err = hci_power_control_state_initializing(power_mode); 5559 break; 5560 case HCI_STATE_WORKING: 5561 err = hci_power_control_state_working(power_mode); 5562 break; 5563 case HCI_STATE_HALTING: 5564 err = hci_power_control_state_halting(power_mode); 5565 break; 5566 case HCI_STATE_FALLING_ASLEEP: 5567 err = hci_power_control_state_falling_asleep(power_mode); 5568 break; 5569 case HCI_STATE_SLEEPING: 5570 err = hci_power_control_state_sleeping(power_mode); 5571 break; 5572 default: 5573 btstack_assert(false); 5574 break; 5575 } 5576 if (err != 0){ 5577 return err; 5578 } 5579 5580 // create internal event 5581 hci_emit_state(); 5582 5583 // trigger next/first action 5584 hci_run(); 5585 5586 return 0; 5587 } 5588 5589 5590 static void hci_halting_run(void) { 5591 5592 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5593 5594 hci_connection_t *connection; 5595 #ifdef ENABLE_BLE 5596 #ifdef ENABLE_LE_PERIPHERAL 5597 bool stop_advertisements; 5598 #endif 5599 #endif 5600 5601 switch (hci_stack->substate) { 5602 case HCI_HALTING_CLASSIC_STOP: 5603 #ifdef ENABLE_CLASSIC 5604 if (!hci_can_send_command_packet_now()) return; 5605 5606 if (hci_stack->connectable || hci_stack->discoverable){ 5607 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5608 hci_send_cmd(&hci_write_scan_enable, 0); 5609 return; 5610 } 5611 #endif 5612 /* fall through */ 5613 5614 case HCI_HALTING_LE_ADV_STOP: 5615 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5616 5617 #ifdef ENABLE_BLE 5618 #ifdef ENABLE_LE_PERIPHERAL 5619 if (!hci_can_send_command_packet_now()) return; 5620 5621 stop_advertisements = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5622 5623 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5624 if (hci_le_extended_advertising_supported()){ 5625 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5626 btstack_linked_list_iterator_t it; 5627 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5628 // stop all periodic advertisements and check if an extended set is active 5629 while (btstack_linked_list_iterator_has_next(&it)){ 5630 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5631 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5632 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5633 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5634 return; 5635 } 5636 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5637 stop_advertisements = true; 5638 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5639 } 5640 } 5641 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5642 if (stop_advertisements){ 5643 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5644 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5645 return; 5646 } 5647 } else 5648 #else /* ENABLE_LE_PERIPHERAL */ 5649 { 5650 if (stop_advertisements) { 5651 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5652 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5653 return; 5654 } 5655 } 5656 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5657 #endif /* ENABLE_LE_PERIPHERAL */ 5658 #endif /* ENABLE_BLE */ 5659 5660 /* fall through */ 5661 5662 case HCI_HALTING_LE_SCAN_STOP: 5663 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5664 if (!hci_can_send_command_packet_now()) return; 5665 5666 #ifdef ENABLE_BLE 5667 #ifdef ENABLE_LE_CENTRAL 5668 if (hci_stack->le_scanning_active){ 5669 hci_le_scan_stop(); 5670 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5671 return; 5672 } 5673 #endif 5674 #endif 5675 5676 /* fall through */ 5677 5678 case HCI_HALTING_DISCONNECT_ALL: 5679 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5680 if (!hci_can_send_command_packet_now()) return; 5681 5682 // close all open connections 5683 connection = (hci_connection_t *) hci_stack->connections; 5684 if (connection) { 5685 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5686 5687 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", (void*)connection, con_handle, connection->state); 5688 5689 // check state 5690 switch(connection->state) { 5691 case SENT_DISCONNECT: 5692 case RECEIVED_DISCONNECTION_COMPLETE: 5693 // wait until connection is gone 5694 return; 5695 default: 5696 break; 5697 } 5698 5699 // finally, send the disconnect command 5700 connection->state = SENT_DISCONNECT; 5701 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5702 return; 5703 } 5704 5705 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5706 // stop BIGs and BIG Syncs 5707 if (hci_stack->le_audio_bigs != NULL){ 5708 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5709 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5710 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5711 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5712 return; 5713 } 5714 if (hci_stack->le_audio_big_syncs != NULL){ 5715 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5716 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5717 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5718 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5719 return; 5720 } 5721 #endif 5722 5723 btstack_run_loop_remove_timer(&hci_stack->timeout); 5724 5725 // no connections left, wait a bit to assert that btstack_crypto isn't waiting for an HCI event 5726 log_info("HCI_STATE_HALTING: wait 50 ms"); 5727 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5728 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5729 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5730 btstack_run_loop_add_timer(&hci_stack->timeout); 5731 break; 5732 5733 case HCI_HALTING_W4_CLOSE_TIMER: 5734 // keep waiting 5735 break; 5736 5737 case HCI_HALTING_CLOSE: 5738 // close left over connections (that had not been properly closed before) 5739 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5740 hci_discard_connections(); 5741 5742 log_info("HCI_STATE_HALTING, calling off"); 5743 5744 // switch mode 5745 hci_power_control_off(); 5746 5747 log_info("HCI_STATE_HALTING, emitting state"); 5748 hci_emit_state(); 5749 log_info("HCI_STATE_HALTING, done"); 5750 break; 5751 5752 default: 5753 break; 5754 } 5755 } 5756 5757 static void hci_falling_asleep_run(void){ 5758 hci_connection_t * connection; 5759 switch(hci_stack->substate) { 5760 case HCI_FALLING_ASLEEP_DISCONNECT: 5761 log_info("HCI_STATE_FALLING_ASLEEP"); 5762 // close all open connections 5763 connection = (hci_connection_t *) hci_stack->connections; 5764 if (connection){ 5765 5766 // send disconnect 5767 if (!hci_can_send_command_packet_now()) return; 5768 5769 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", (void*)connection, (uint16_t)connection->con_handle); 5770 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5771 5772 // send disconnected event right away - causes higher layer connections to get closed, too. 5773 hci_shutdown_connection(connection); 5774 return; 5775 } 5776 5777 if (hci_classic_supported()){ 5778 // disable page and inquiry scan 5779 if (!hci_can_send_command_packet_now()) return; 5780 5781 log_info("HCI_STATE_HALTING, disabling inq scans"); 5782 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5783 5784 // continue in next substate 5785 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5786 break; 5787 } 5788 5789 /* fall through */ 5790 5791 case HCI_FALLING_ASLEEP_COMPLETE: 5792 log_info("HCI_STATE_HALTING, calling sleep"); 5793 // switch mode 5794 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5795 hci_emit_state(); 5796 break; 5797 5798 default: 5799 break; 5800 } 5801 } 5802 5803 #ifdef ENABLE_CLASSIC 5804 5805 static void hci_update_scan_enable(void){ 5806 // 2 = page scan, 1 = inq scan 5807 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5808 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5809 hci_run(); 5810 } 5811 5812 void gap_discoverable_control(uint8_t enable){ 5813 if (enable) enable = 1; // normalize argument 5814 5815 if (hci_stack->discoverable == enable){ 5816 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5817 return; 5818 } 5819 5820 hci_stack->discoverable = enable; 5821 hci_update_scan_enable(); 5822 } 5823 5824 void gap_connectable_control(uint8_t enable){ 5825 if (enable) enable = 1; // normalize argument 5826 5827 // don't emit event 5828 if (hci_stack->connectable == enable) return; 5829 5830 hci_stack->connectable = enable; 5831 hci_update_scan_enable(); 5832 } 5833 #endif 5834 5835 void gap_local_bd_addr(bd_addr_t address_buffer){ 5836 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5837 } 5838 5839 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5840 static void hci_host_num_completed_packets(void){ 5841 5842 // create packet manually as arrays are not supported and num_commands should not get reduced 5843 hci_reserve_packet_buffer(); 5844 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5845 5846 uint16_t size = 0; 5847 uint16_t num_handles = 0; 5848 packet[size++] = 0x35; 5849 packet[size++] = 0x0c; 5850 size++; // skip param len 5851 size++; // skip num handles 5852 5853 // add { handle, packets } entries 5854 btstack_linked_item_t * it; 5855 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5856 hci_connection_t * connection = (hci_connection_t *) it; 5857 if (connection->num_packets_completed){ 5858 little_endian_store_16(packet, size, connection->con_handle); 5859 size += 2; 5860 little_endian_store_16(packet, size, connection->num_packets_completed); 5861 size += 2; 5862 // 5863 num_handles++; 5864 connection->num_packets_completed = 0; 5865 } 5866 } 5867 5868 packet[2] = size - 3; 5869 packet[3] = num_handles; 5870 5871 hci_stack->host_completed_packets = 0; 5872 5873 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5874 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5875 5876 // release packet buffer for synchronous transport implementations 5877 if (hci_transport_synchronous()){ 5878 hci_release_packet_buffer(); 5879 hci_emit_transport_packet_sent(); 5880 } 5881 } 5882 #endif 5883 5884 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5885 UNUSED(ds); 5886 hci_stack->substate = HCI_HALTING_CLOSE; 5887 hci_halting_run(); 5888 } 5889 5890 static bool hci_run_acl_fragments(void){ 5891 if (hci_stack->acl_fragmentation_total_size > 0u) { 5892 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5893 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5894 if (connection) { 5895 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5896 hci_send_acl_packet_fragments(connection); 5897 return true; 5898 } 5899 } else { 5900 // connection gone -> discard further fragments 5901 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5902 hci_stack->acl_fragmentation_total_size = 0; 5903 hci_stack->acl_fragmentation_pos = 0; 5904 } 5905 } 5906 return false; 5907 } 5908 5909 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5910 static bool hci_run_iso_fragments(void){ 5911 if (hci_stack->iso_fragmentation_total_size > 0u) { 5912 // TODO: flow control 5913 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5914 hci_send_iso_packet_fragments(); 5915 return true; 5916 } 5917 } 5918 return false; 5919 } 5920 #endif 5921 5922 #ifdef ENABLE_CLASSIC 5923 5924 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5925 static bool hci_classic_operation_active(void) { 5926 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5927 return true; 5928 } 5929 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5930 return true; 5931 } 5932 btstack_linked_item_t * it; 5933 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5934 hci_connection_t *connection = (hci_connection_t *) it; 5935 switch (connection->state) { 5936 case SENT_CREATE_CONNECTION: 5937 case SENT_CANCEL_CONNECTION: 5938 case SENT_DISCONNECT: 5939 return true; 5940 default: 5941 break; 5942 } 5943 } 5944 return false; 5945 } 5946 #endif 5947 5948 static bool hci_run_general_gap_classic(void){ 5949 5950 // assert stack is working and classic is active 5951 if (hci_classic_supported() == false) return false; 5952 if (hci_stack->state != HCI_STATE_WORKING) return false; 5953 5954 // decline incoming connections 5955 if (hci_stack->decline_reason){ 5956 uint8_t reason = hci_stack->decline_reason; 5957 hci_stack->decline_reason = 0; 5958 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5959 return true; 5960 } 5961 5962 if (hci_stack->gap_tasks_classic != 0){ 5963 hci_run_gap_tasks_classic(); 5964 return true; 5965 } 5966 5967 // start/stop inquiry 5968 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5969 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5970 if (hci_classic_operation_active() == false) 5971 #endif 5972 { 5973 uint8_t duration = hci_stack->inquiry_state; 5974 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5975 if (hci_stack->inquiry_max_period_length != 0){ 5976 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); 5977 } else { 5978 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5979 } 5980 return true; 5981 } 5982 } 5983 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5984 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5985 hci_send_cmd(&hci_inquiry_cancel); 5986 return true; 5987 } 5988 5989 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5990 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5991 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5992 return true; 5993 } 5994 5995 // remote name request 5996 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5997 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5998 if (hci_classic_operation_active() == false) 5999 #endif 6000 { 6001 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 6002 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 6003 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 6004 return true; 6005 } 6006 } 6007 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6008 // Local OOB data 6009 if (hci_stack->classic_read_local_oob_data){ 6010 hci_stack->classic_read_local_oob_data = false; 6011 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 6012 hci_send_cmd(&hci_read_local_extended_oob_data); 6013 } else { 6014 hci_send_cmd(&hci_read_local_oob_data); 6015 } 6016 } 6017 #endif 6018 // pairing 6019 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 6020 uint8_t state = hci_stack->gap_pairing_state; 6021 uint8_t pin_code[PIN_CODE_LEN]; 6022 switch (state){ 6023 case GAP_PAIRING_STATE_SEND_PIN: 6024 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6025 memset(pin_code, 0, 16); 6026 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 6027 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 6028 break; 6029 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 6030 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6031 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 6032 break; 6033 case GAP_PAIRING_STATE_SEND_PASSKEY: 6034 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6035 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 6036 break; 6037 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 6038 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6039 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 6040 break; 6041 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 6042 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6043 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 6044 break; 6045 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 6046 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6047 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 6048 break; 6049 default: 6050 break; 6051 } 6052 return true; 6053 } 6054 return false; 6055 } 6056 #endif 6057 6058 #ifdef ENABLE_BLE 6059 #ifdef ENABLE_LE_CENTRAL 6060 6061 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6062 static uint8_t hci_le_num_phys(uint8_t phys){ 6063 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 6064 btstack_assert(phys); 6065 return num_bits_set[phys]; 6066 } 6067 #endif 6068 6069 static void hci_le_scan_stop(void){ 6070 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6071 if (hci_le_extended_advertising_supported()) { 6072 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 6073 } else 6074 #endif 6075 { 6076 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 6077 } 6078 } 6079 6080 static void 6081 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 6082 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6083 if (hci_le_extended_advertising_supported()) { 6084 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6085 uint16_t le_connection_scan_interval[3]; 6086 uint16_t le_connection_scan_window[3]; 6087 uint16_t le_connection_interval_min[3]; 6088 uint16_t le_connection_interval_max[3]; 6089 uint16_t le_connection_latency[3]; 6090 uint16_t le_supervision_timeout[3]; 6091 uint16_t le_minimum_ce_length[3]; 6092 uint16_t le_maximum_ce_length[3]; 6093 6094 uint8_t i; 6095 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6096 for (i=0;i<num_phys;i++){ 6097 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6098 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6099 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6100 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6101 le_connection_latency[i] = hci_stack->le_connection_latency; 6102 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6103 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6104 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6105 } 6106 hci_send_cmd(&hci_le_extended_create_connection, 6107 initiator_filter_policy, 6108 hci_stack->le_connection_own_addr_type, // our addr type: 6109 address_type, // peer address type 6110 address, // peer bd addr 6111 hci_stack->le_connection_phys, // initiating PHY 6112 le_connection_scan_interval, // conn scan interval 6113 le_connection_scan_window, // conn scan windows 6114 le_connection_interval_min, // conn interval min 6115 le_connection_interval_max, // conn interval max 6116 le_connection_latency, // conn latency 6117 le_supervision_timeout, // conn latency 6118 le_minimum_ce_length, // min ce length 6119 le_maximum_ce_length // max ce length 6120 ); 6121 } else 6122 #endif 6123 { 6124 hci_send_cmd(&hci_le_create_connection, 6125 hci_stack->le_connection_scan_interval, // conn scan interval 6126 hci_stack->le_connection_scan_window, // conn scan windows 6127 initiator_filter_policy, // don't use whitelist 6128 address_type, // peer address type 6129 address, // peer bd addr 6130 hci_stack->le_connection_own_addr_type, // our addr type: 6131 hci_stack->le_connection_interval_min, // conn interval min 6132 hci_stack->le_connection_interval_max, // conn interval max 6133 hci_stack->le_connection_latency, // conn latency 6134 hci_stack->le_supervision_timeout, // conn latency 6135 hci_stack->le_minimum_ce_length, // min ce length 6136 hci_stack->le_maximum_ce_length // max ce length 6137 ); 6138 } 6139 } 6140 #endif 6141 6142 #ifdef ENABLE_LE_PERIPHERAL 6143 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6144 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6145 uint8_t operation = 0; 6146 if (pos == 0){ 6147 // first fragment or complete data 6148 operation |= 1; 6149 } 6150 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6151 // last fragment or complete data 6152 operation |= 2; 6153 } 6154 return operation; 6155 } 6156 #endif 6157 #endif 6158 6159 static bool hci_whitelist_modification_pending(void) { 6160 btstack_linked_list_iterator_t it; 6161 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6162 while (btstack_linked_list_iterator_has_next(&it)){ 6163 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6164 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6165 return true; 6166 } 6167 } 6168 return false; 6169 } 6170 6171 static bool hci_whitelist_modification_process(void){ 6172 // add/remove entries 6173 btstack_linked_list_iterator_t it; 6174 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6175 while (btstack_linked_list_iterator_has_next(&it)){ 6176 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6177 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6178 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6179 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6180 bd_addr_type_t address_type = entry->address_type; 6181 bd_addr_t address; 6182 memcpy(address, entry->address, 6); 6183 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6184 // remove from whitelist if not scheduled for re-addition 6185 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6186 btstack_memory_whitelist_entry_free(entry); 6187 } 6188 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6189 return true; 6190 } 6191 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6192 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6193 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6194 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6195 return true; 6196 } 6197 } 6198 return false; 6199 } 6200 6201 static bool hci_run_general_gap_le(void){ 6202 6203 btstack_linked_list_iterator_t lit; 6204 UNUSED(lit); 6205 6206 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6207 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6208 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6209 hci_stack->le_resolvable_private_address_update_s = 0; 6210 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6211 return true; 6212 } 6213 #endif 6214 6215 // Phase 1: collect what to stop 6216 6217 #ifdef ENABLE_LE_CENTRAL 6218 bool scanning_stop = false; 6219 bool connecting_stop = false; 6220 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6221 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6222 bool periodic_sync_stop = false; 6223 #endif 6224 #endif 6225 #endif 6226 6227 #ifdef ENABLE_LE_PERIPHERAL 6228 bool advertising_stop = false; 6229 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6230 le_advertising_set_t * advertising_stop_set = NULL; 6231 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6232 bool periodic_advertising_stop = false; 6233 #endif 6234 #endif 6235 #endif 6236 6237 // check if own address changes 6238 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6239 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6240 6241 // check if whitelist needs modification 6242 bool whitelist_modification_pending = hci_whitelist_modification_pending(); 6243 6244 // check if resolving list needs modification 6245 bool resolving_list_modification_pending = false; 6246 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6247 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6248 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6249 resolving_list_modification_pending = true; 6250 } 6251 #endif 6252 6253 #ifdef ENABLE_LE_CENTRAL 6254 6255 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6256 // check if periodic advertiser list needs modification 6257 bool periodic_list_modification_pending = false; 6258 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6259 while (btstack_linked_list_iterator_has_next(&lit)){ 6260 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6261 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6262 periodic_list_modification_pending = true; 6263 break; 6264 } 6265 } 6266 #endif 6267 6268 // scanning control 6269 if (hci_stack->le_scanning_active) { 6270 // stop if: 6271 // - parameter change required 6272 // - it's disabled 6273 // - whitelist change required but used for scanning 6274 // - resolving list modified 6275 // - own address changes 6276 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6277 if ((hci_stack->le_scanning_param_update) || 6278 !hci_stack->le_scanning_enabled || 6279 (scanning_uses_whitelist && whitelist_modification_pending) || 6280 resolving_list_modification_pending || 6281 random_address_change){ 6282 6283 scanning_stop = true; 6284 } 6285 } 6286 6287 // connecting control 6288 bool connecting_with_whitelist; 6289 switch (hci_stack->le_connecting_state){ 6290 case LE_CONNECTING_DIRECT: 6291 case LE_CONNECTING_WHITELIST: 6292 // stop connecting if: 6293 // - connecting uses white and whitelist modification pending 6294 // - if it got disabled 6295 // - resolving list modified 6296 // - own address changes 6297 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6298 if ((connecting_with_whitelist && whitelist_modification_pending) || 6299 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6300 resolving_list_modification_pending || 6301 random_address_change) { 6302 6303 connecting_stop = true; 6304 } 6305 break; 6306 default: 6307 break; 6308 } 6309 6310 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6311 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6312 // periodic sync control 6313 bool sync_with_advertiser_list; 6314 switch(hci_stack->le_periodic_sync_state){ 6315 case LE_CONNECTING_DIRECT: 6316 case LE_CONNECTING_WHITELIST: 6317 // stop sync if: 6318 // - sync with advertiser list and advertiser list modification pending 6319 // - if it got disabled 6320 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6321 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6322 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6323 periodic_sync_stop = true; 6324 } 6325 break; 6326 default: 6327 break; 6328 } 6329 #endif 6330 #endif 6331 6332 #endif /* ENABLE_LE_CENTRAL */ 6333 6334 #ifdef ENABLE_LE_PERIPHERAL 6335 // le advertisement control 6336 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6337 // stop if: 6338 // - parameter change required 6339 // - random address used in advertising and changes 6340 // - it's disabled 6341 // - whitelist change required but used for advertisement filter policy 6342 // - resolving list modified 6343 // - own address changes 6344 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6345 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6346 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6347 if (advertising_change || 6348 (advertising_uses_random_address && random_address_change) || 6349 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6350 (advertising_uses_whitelist && whitelist_modification_pending) || 6351 resolving_list_modification_pending || 6352 random_address_change) { 6353 6354 advertising_stop = true; 6355 } 6356 } 6357 6358 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6359 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6360 btstack_linked_list_iterator_t it; 6361 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6362 while (btstack_linked_list_iterator_has_next(&it)){ 6363 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6364 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6365 // stop if: 6366 // - parameter change required 6367 // - random address used in connectable advertising and changes 6368 // - it's disabled 6369 // - whitelist change required but used for advertisement filter policy 6370 // - resolving list modified 6371 // - own address changes 6372 // - advertisement set will be removed 6373 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6374 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6375 bool advertising_uses_random_address = 6376 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6377 advertising_connectable; 6378 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6379 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6380 bool advertising_set_random_address_change = 6381 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6382 bool advertising_set_will_be_removed = 6383 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6384 if (advertising_parameter_change || 6385 (advertising_uses_random_address && advertising_set_random_address_change) || 6386 (advertising_enabled == false) || 6387 (advertising_uses_whitelist && whitelist_modification_pending) || 6388 resolving_list_modification_pending || 6389 advertising_set_will_be_removed) { 6390 6391 advertising_stop = true; 6392 advertising_stop_set = advertising_set; 6393 break; 6394 } 6395 } 6396 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6397 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6398 // stop if: 6399 // - it's disabled 6400 // - parameter change required 6401 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6402 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6403 if ((periodic_enabled == false) || periodic_parameter_change){ 6404 periodic_advertising_stop = true; 6405 advertising_stop_set = advertising_set; 6406 } 6407 } 6408 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6409 } 6410 } 6411 #endif 6412 6413 #endif 6414 6415 6416 // Phase 2: stop everything that should be off during modifications 6417 6418 6419 // 2.1 Outgoing connection 6420 #ifdef ENABLE_LE_CENTRAL 6421 if (connecting_stop){ 6422 hci_send_cmd(&hci_le_create_connection_cancel); 6423 return true; 6424 } 6425 #endif 6426 6427 // 2.2 Scanning 6428 #ifdef ENABLE_LE_CENTRAL 6429 if (scanning_stop){ 6430 hci_stack->le_scanning_active = false; 6431 hci_le_scan_stop(); 6432 return true; 6433 } 6434 6435 // 2.3 Periodic Sync 6436 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6437 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6438 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6439 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6440 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6441 return true; 6442 } 6443 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6444 if (periodic_sync_stop){ 6445 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6446 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6447 return true; 6448 } 6449 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6450 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6451 #endif /* ENABLE_LE_CENTRAL */ 6452 6453 // 2.4 Advertising: legacy, extended, periodic 6454 #ifdef ENABLE_LE_PERIPHERAL 6455 if (advertising_stop){ 6456 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6457 if (hci_le_extended_advertising_supported()) { 6458 uint8_t advertising_stop_handle; 6459 if (advertising_stop_set != NULL){ 6460 advertising_stop_handle = advertising_stop_set->advertising_handle; 6461 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6462 } else { 6463 advertising_stop_handle = 0; 6464 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6465 } 6466 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6467 const uint16_t durations[] = { 0 }; 6468 const uint16_t max_events[] = { 0 }; 6469 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6470 } else 6471 #endif 6472 { 6473 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6474 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6475 } 6476 return true; 6477 } 6478 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6479 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6480 if (periodic_advertising_stop){ 6481 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6482 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6483 return true; 6484 } 6485 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6486 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6487 #endif /* ENABLE_LE_PERIPHERAL */ 6488 6489 6490 // Phase 3: modify 6491 6492 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6493 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6494 // GAP Privacy, notify clients upon upcoming random address change 6495 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6496 // notify might cause hci_run to get executed, check if we still can send 6497 gap_privacy_clients_notify(hci_stack->le_random_address); 6498 if (!hci_can_send_command_packet_now()) { 6499 return true; 6500 } 6501 } 6502 6503 // - wait until privacy update completed 6504 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6505 return false; 6506 } 6507 6508 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6509 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6510 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6511 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6512 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6513 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6514 #endif 6515 return true; 6516 } 6517 6518 #ifdef ENABLE_LE_CENTRAL 6519 if (hci_stack->le_scanning_param_update){ 6520 hci_stack->le_scanning_param_update = false; 6521 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6522 if (hci_le_extended_advertising_supported()){ 6523 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6524 uint8_t scan_types[2]; 6525 uint16_t scan_intervals[2]; 6526 uint16_t scan_windows[2]; 6527 6528 uint8_t i; 6529 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6530 for (i=0;i<num_phys;i++){ 6531 scan_types[i] = hci_stack->le_scan_type; 6532 scan_intervals[i] = hci_stack->le_scan_interval; 6533 scan_windows[i] = hci_stack->le_scan_window; 6534 } 6535 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6536 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6537 } else 6538 #endif 6539 { 6540 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6541 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6542 } 6543 return true; 6544 } 6545 #endif 6546 6547 #ifdef ENABLE_LE_PERIPHERAL 6548 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6549 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6550 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6551 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6552 if (hci_le_extended_advertising_supported()){ 6553 // map advertisment type to advertising event properties 6554 uint16_t adv_event_properties = 0; 6555 // 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000 6556 const uint16_t mapping[] = { 0x13, 0x15, 0x1D, 0x12, 0x10 }; 6557 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6558 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6559 } 6560 hci_stack->le_advertising_set_in_current_command = 0; 6561 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6562 0, 6563 adv_event_properties, 6564 hci_stack->le_advertisements_interval_min, 6565 hci_stack->le_advertisements_interval_max, 6566 hci_stack->le_advertisements_channel_map, 6567 hci_stack->le_advertisements_own_addr_type, 6568 hci_stack->le_advertisements_direct_address_type, 6569 hci_stack->le_advertisements_direct_address, 6570 hci_stack->le_advertisements_filter_policy, 6571 0x7f, // tx power: no preference 6572 0x01, // primary adv phy: LE 1M 6573 0, // secondary adv max skip 6574 0x01, // secondary adv phy 6575 0, // adv sid 6576 0 // scan request notification 6577 ); 6578 } else 6579 #endif 6580 { 6581 hci_send_cmd(&hci_le_set_advertising_parameters, 6582 hci_stack->le_advertisements_interval_min, 6583 hci_stack->le_advertisements_interval_max, 6584 hci_stack->le_advertisements_type, 6585 hci_stack->le_advertisements_own_addr_type, 6586 hci_stack->le_advertisements_direct_address_type, 6587 hci_stack->le_advertisements_direct_address, 6588 hci_stack->le_advertisements_channel_map, 6589 hci_stack->le_advertisements_filter_policy); 6590 } 6591 return true; 6592 } 6593 6594 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6595 // assumption: only set if extended advertising is supported 6596 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6597 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6598 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6599 return true; 6600 } 6601 #endif 6602 6603 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6604 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6605 uint8_t adv_data_clean[31]; 6606 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6607 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6608 hci_stack->le_advertisements_data_len); 6609 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6610 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6611 if (hci_le_extended_advertising_supported()){ 6612 hci_stack->le_advertising_set_in_current_command = 0; 6613 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6614 } else 6615 #endif 6616 { 6617 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6618 } 6619 return true; 6620 } 6621 6622 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6623 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6624 uint8_t scan_data_clean[31]; 6625 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6626 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6627 hci_stack->le_scan_response_data_len); 6628 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6629 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6630 if (hci_le_extended_advertising_supported()){ 6631 hci_stack->le_advertising_set_in_current_command = 0; 6632 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6633 } else 6634 #endif 6635 { 6636 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6637 } 6638 return true; 6639 } 6640 6641 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6642 if (hci_le_extended_advertising_supported()) { 6643 btstack_linked_list_iterator_t it; 6644 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6645 while (btstack_linked_list_iterator_has_next(&it)){ 6646 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6647 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6648 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6649 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6650 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6651 return true; 6652 } 6653 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6654 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6655 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6656 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6657 advertising_set->advertising_handle, 6658 advertising_set->extended_params.advertising_event_properties, 6659 advertising_set->extended_params.primary_advertising_interval_min, 6660 advertising_set->extended_params.primary_advertising_interval_max, 6661 advertising_set->extended_params.primary_advertising_channel_map, 6662 advertising_set->extended_params.own_address_type, 6663 advertising_set->extended_params.peer_address_type, 6664 advertising_set->extended_params.peer_address, 6665 advertising_set->extended_params.advertising_filter_policy, 6666 advertising_set->extended_params.advertising_tx_power, 6667 advertising_set->extended_params.primary_advertising_phy, 6668 advertising_set->extended_params.secondary_advertising_max_skip, 6669 advertising_set->extended_params.secondary_advertising_phy, 6670 advertising_set->extended_params.advertising_sid, 6671 advertising_set->extended_params.scan_request_notification_enable 6672 ); 6673 return true; 6674 } 6675 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6676 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6677 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6678 return true; 6679 } 6680 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6681 uint16_t pos = advertising_set->adv_data_pos; 6682 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6683 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6684 if ((operation & 0x02) != 0){ 6685 // last fragment or complete data 6686 operation |= 2; 6687 advertising_set->adv_data_pos = 0; 6688 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6689 } else { 6690 advertising_set->adv_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_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6694 return true; 6695 } 6696 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6697 uint16_t pos = advertising_set->scan_data_pos; 6698 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6699 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6700 if ((operation & 0x02) != 0){ 6701 advertising_set->scan_data_pos = 0; 6702 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6703 } else { 6704 advertising_set->scan_data_pos += data_to_upload; 6705 } 6706 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6707 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6708 return true; 6709 } 6710 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6711 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6712 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6713 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6714 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6715 advertising_set->advertising_handle, 6716 advertising_set->periodic_params.periodic_advertising_interval_min, 6717 advertising_set->periodic_params.periodic_advertising_interval_max, 6718 advertising_set->periodic_params.periodic_advertising_properties); 6719 return true; 6720 } 6721 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6722 uint16_t pos = advertising_set->periodic_data_pos; 6723 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6724 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6725 if ((operation & 0x02) != 0){ 6726 // last fragment or complete data 6727 operation |= 2; 6728 advertising_set->periodic_data_pos = 0; 6729 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6730 } else { 6731 advertising_set->periodic_data_pos += data_to_upload; 6732 } 6733 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6734 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6735 return true; 6736 } 6737 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6738 } 6739 } 6740 #endif 6741 6742 #endif 6743 6744 #ifdef ENABLE_LE_CENTRAL 6745 // if connect with whitelist was active and is not cancelled yet, wait until next time 6746 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6747 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6748 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6749 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6750 #endif 6751 #endif 6752 6753 // LE Whitelist Management 6754 if (whitelist_modification_pending){ 6755 bool done = hci_whitelist_modification_process(); 6756 if (done) return true; 6757 } 6758 6759 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6760 // LE Resolving List Management 6761 if (resolving_list_modification_pending) { 6762 uint16_t i; 6763 uint8_t null_16[16]; 6764 uint8_t local_irk_flipped[16]; 6765 const uint8_t *local_irk; 6766 switch (hci_stack->le_resolving_list_state) { 6767 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6768 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6769 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6770 return true; 6771 case LE_RESOLVING_LIST_READ_SIZE: 6772 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6773 hci_send_cmd(&hci_le_read_resolving_list_size); 6774 return true; 6775 case LE_RESOLVING_LIST_SEND_CLEAR: 6776 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6777 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6778 sizeof(hci_stack->le_resolving_list_add_entries)); 6779 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6780 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6781 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6782 sizeof(hci_stack->le_resolving_list_remove_entries)); 6783 hci_send_cmd(&hci_le_clear_resolving_list); 6784 return true; 6785 case LE_RESOLVING_LIST_SET_IRK: 6786 // set IRK used by RPA for undirected advertising 6787 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6788 local_irk = gap_get_persistent_irk(); 6789 reverse_128(local_irk, local_irk_flipped); 6790 memset(null_16, 0, sizeof(null_16)); 6791 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6792 null_16, local_irk_flipped); 6793 return true; 6794 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6795 // first remove old entries 6796 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6797 uint8_t offset = i >> 3; 6798 uint8_t mask = 1 << (i & 7); 6799 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6800 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6801 bd_addr_t peer_identity_addreses; 6802 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6803 sm_key_t peer_irk; 6804 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6805 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6806 6807 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6808 // trigger whitelist entry 'update' (work around for controller bug) 6809 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6810 while (btstack_linked_list_iterator_has_next(&lit)) { 6811 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6812 if (entry->address_type != peer_identity_addr_type) continue; 6813 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6814 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6815 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6816 } 6817 #endif 6818 6819 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6820 peer_identity_addreses); 6821 return true; 6822 } 6823 6824 // then add new entries 6825 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6826 uint8_t offset = i >> 3; 6827 uint8_t mask = 1 << (i & 7); 6828 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6829 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6830 bd_addr_t peer_identity_addreses; 6831 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6832 sm_key_t peer_irk; 6833 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6834 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6835 if (btstack_is_null(peer_irk, 16)) continue; 6836 local_irk = gap_get_persistent_irk(); 6837 // command uses format specifier 'P' that stores 16-byte value without flip 6838 uint8_t peer_irk_flipped[16]; 6839 reverse_128(local_irk, local_irk_flipped); 6840 reverse_128(peer_irk, peer_irk_flipped); 6841 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6842 peer_irk_flipped, local_irk_flipped); 6843 return true; 6844 } 6845 6846 // finally, set privacy mode 6847 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6848 uint8_t offset = i >> 3; 6849 uint8_t mask = 1 << (i & 7); 6850 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6851 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6852 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6853 // Network Privacy Mode is default 6854 continue; 6855 } 6856 bd_addr_t peer_identity_address; 6857 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6858 sm_key_t peer_irk; 6859 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6860 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6861 if (btstack_is_null(peer_irk, 16)) continue; 6862 // command uses format specifier 'P' that stores 16-byte value without flip 6863 uint8_t peer_irk_flipped[16]; 6864 reverse_128(peer_irk, peer_irk_flipped); 6865 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6866 return true; 6867 } 6868 break; 6869 6870 default: 6871 break; 6872 } 6873 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6874 } 6875 #endif 6876 6877 #ifdef ENABLE_LE_CENTRAL 6878 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6879 // LE Whitelist Management 6880 if (periodic_list_modification_pending){ 6881 // add/remove entries 6882 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6883 while (btstack_linked_list_iterator_has_next(&lit)){ 6884 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6885 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6886 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6887 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6888 return true; 6889 } 6890 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6891 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6892 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6893 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6894 return true; 6895 } 6896 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6897 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6898 btstack_memory_periodic_advertiser_list_entry_free(entry); 6899 } 6900 } 6901 } 6902 #endif 6903 #endif 6904 6905 #ifdef ENABLE_LE_CENTRAL 6906 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6907 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6908 if (hci_stack->le_past_set_default_params){ 6909 hci_stack->le_past_set_default_params = false; 6910 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6911 hci_stack->le_past_mode, 6912 hci_stack->le_past_skip, 6913 hci_stack->le_past_sync_timeout, 6914 hci_stack->le_past_cte_type); 6915 return true; 6916 } 6917 #endif 6918 #endif 6919 #endif 6920 6921 // postpone all actions until stack is fully working 6922 if (hci_stack->state != HCI_STATE_WORKING) return false; 6923 6924 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6925 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6926 6927 // Phase 4: restore state 6928 6929 #ifdef ENABLE_LE_CENTRAL 6930 // re-start scanning 6931 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6932 hci_stack->le_scanning_active = true; 6933 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6934 if (hci_le_extended_advertising_supported()){ 6935 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6936 } else 6937 #endif 6938 { 6939 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6940 } 6941 return true; 6942 } 6943 #endif 6944 6945 #ifdef ENABLE_LE_CENTRAL 6946 // re-start connecting 6947 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6948 bd_addr_t null_addr; 6949 memset(null_addr, 0, 6); 6950 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6951 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6952 hci_send_le_create_connection(1, 0, null_addr); 6953 return true; 6954 } 6955 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6956 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6957 switch(hci_stack->le_periodic_sync_request){ 6958 case LE_CONNECTING_DIRECT: 6959 case LE_CONNECTING_WHITELIST: 6960 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6961 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6962 hci_stack->le_periodic_sync_options, 6963 hci_stack->le_periodic_sync_advertising_sid, 6964 hci_stack->le_periodic_sync_advertiser_address_type, 6965 hci_stack->le_periodic_sync_advertiser_address, 6966 hci_stack->le_periodic_sync_skip, 6967 hci_stack->le_periodic_sync_timeout, 6968 hci_stack->le_periodic_sync_cte_type); 6969 return true; 6970 default: 6971 break; 6972 } 6973 } 6974 #endif 6975 #endif 6976 6977 #ifdef ENABLE_LE_PERIPHERAL 6978 // re-start advertising 6979 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6980 // check if advertisements should be enabled given 6981 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6982 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6983 6984 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6985 if (hci_le_extended_advertising_supported()){ 6986 const uint8_t advertising_handles[] = { 0 }; 6987 const uint16_t durations[] = { 0 }; 6988 const uint16_t max_events[] = { 0 }; 6989 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6990 } else 6991 #endif 6992 { 6993 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6994 } 6995 return true; 6996 } 6997 6998 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6999 if (hci_le_extended_advertising_supported()) { 7000 btstack_linked_list_iterator_t it; 7001 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7002 while (btstack_linked_list_iterator_has_next(&it)) { 7003 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7004 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 7005 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 7006 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 7007 const uint16_t durations[] = { advertising_set->enable_timeout }; 7008 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 7009 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 7010 return true; 7011 } 7012 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7013 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 7014 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 7015 uint8_t enable = 1; 7016 if (advertising_set->periodic_include_adi){ 7017 enable |= 2; 7018 } 7019 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 7020 return true; 7021 } 7022 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7023 } 7024 } 7025 #endif 7026 #endif 7027 7028 return false; 7029 } 7030 7031 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7032 static bool hci_run_iso_tasks(void){ 7033 btstack_linked_list_iterator_t it; 7034 7035 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 7036 return false; 7037 } 7038 7039 // BIG 7040 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 7041 while (btstack_linked_list_iterator_has_next(&it)){ 7042 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 7043 switch (big->state){ 7044 case LE_AUDIO_BIG_STATE_CREATE: 7045 hci_stack->iso_active_operation_group_id = big->params->big_handle; 7046 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7047 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7048 hci_send_cmd(&hci_le_create_big, 7049 big->params->big_handle, 7050 big->params->advertising_handle, 7051 big->params->num_bis, 7052 big->params->sdu_interval_us, 7053 big->params->max_sdu, 7054 big->params->max_transport_latency_ms, 7055 big->params->rtn, 7056 big->params->phy, 7057 big->params->packing, 7058 big->params->framing, 7059 big->params->encryption, 7060 big->params->broadcast_code); 7061 return true; 7062 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7063 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7064 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); 7065 return true; 7066 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7067 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7068 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 7069 return true; 7070 case LE_AUDIO_BIG_STATE_TERMINATE: 7071 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7072 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7073 return true; 7074 default: 7075 break; 7076 } 7077 } 7078 7079 // BIG Sync 7080 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 7081 while (btstack_linked_list_iterator_has_next(&it)){ 7082 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 7083 switch (big_sync->state){ 7084 case LE_AUDIO_BIG_STATE_CREATE: 7085 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 7086 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7087 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7088 hci_send_cmd(&hci_le_big_create_sync, 7089 big_sync->params->big_handle, 7090 big_sync->params->sync_handle, 7091 big_sync->params->encryption, 7092 big_sync->params->broadcast_code, 7093 big_sync->params->mse, 7094 big_sync->params->big_sync_timeout_10ms, 7095 big_sync->params->num_bis, 7096 big_sync->params->bis_indices); 7097 return true; 7098 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7099 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7100 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); 7101 return true; 7102 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7103 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7104 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7105 return true; 7106 case LE_AUDIO_BIG_STATE_TERMINATE: 7107 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7108 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7109 return true; 7110 default: 7111 break; 7112 } 7113 } 7114 7115 // CIG 7116 bool cig_active; 7117 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7118 while (btstack_linked_list_iterator_has_next(&it)) { 7119 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7120 uint8_t i; 7121 // Set CIG Parameters 7122 uint8_t cis_id[MAX_NR_CIS]; 7123 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7124 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7125 uint8_t phy_c_to_p[MAX_NR_CIS]; 7126 uint8_t phy_p_to_c[MAX_NR_CIS]; 7127 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7128 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7129 switch (cig->state) { 7130 case LE_AUDIO_CIG_STATE_CREATE: 7131 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7132 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7133 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7134 le_audio_cig_params_t * params = cig->params; 7135 for (i = 0; i < params->num_cis; i++) { 7136 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7137 cis_id[i] = cis_params->cis_id; 7138 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7139 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7140 phy_c_to_p[i] = cis_params->phy_c_to_p; 7141 phy_p_to_c[i] = cis_params->phy_p_to_c; 7142 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7143 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7144 } 7145 hci_send_cmd(&hci_le_set_cig_parameters, 7146 cig->cig_id, 7147 params->sdu_interval_c_to_p, 7148 params->sdu_interval_p_to_c, 7149 params->worst_case_sca, 7150 params->packing, 7151 params->framing, 7152 params->max_transport_latency_c_to_p, 7153 params->max_transport_latency_p_to_c, 7154 params->num_cis, 7155 cis_id, 7156 max_sdu_c_to_p, 7157 max_sdu_p_to_c, 7158 phy_c_to_p, 7159 phy_p_to_c, 7160 rtn_c_to_p, 7161 rtn_p_to_c 7162 ); 7163 return true; 7164 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7165 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7166 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7167 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7168 for (i=0;i<cig->num_cis;i++){ 7169 cig->cis_setup_active[i] = true; 7170 } 7171 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7172 return true; 7173 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7174 for ( ; cig->state_vars.next_cis < (cig->num_cis * 2) ; cig->state_vars.next_cis++ ){ 7175 // find next path to setup 7176 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7177 if (cig->cis_established[cis_index] == false) { 7178 continue; 7179 } 7180 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7181 bool setup = true; 7182 if (cis_direction == 0){ 7183 // 0 - input - host to controller 7184 // we are central => central to peripheral 7185 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7186 } else { 7187 // 1 - output - controller to host 7188 // we are central => peripheral to central 7189 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7190 } 7191 if (setup){ 7192 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7193 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7194 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7195 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); 7196 return true; 7197 } 7198 } 7199 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7200 break; 7201 case LE_AUDIO_CIG_STATE_REMOVE: 7202 // check if CIG Active 7203 cig_active = false; 7204 for (i = 0; i < cig->num_cis; i++) { 7205 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7206 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7207 if (stream != NULL){ 7208 cig_active = true; 7209 break; 7210 } 7211 } 7212 } 7213 if (cig_active == false){ 7214 btstack_linked_list_iterator_remove(&it); 7215 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7216 return true; 7217 } 7218 default: 7219 break; 7220 } 7221 } 7222 7223 // CIS Accept/Reject/Setup ISO Path/Close 7224 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7225 while (btstack_linked_list_iterator_has_next(&it)) { 7226 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7227 hci_con_handle_t con_handle; 7228 switch (iso_stream->state){ 7229 case HCI_ISO_STREAM_W2_ACCEPT: 7230 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7231 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7232 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7233 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7234 return true; 7235 case HCI_ISO_STREAM_W2_REJECT: 7236 con_handle = iso_stream->cis_handle; 7237 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7238 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7239 hci_iso_stream_finalize(iso_stream); 7240 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7241 return true; 7242 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7243 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7244 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7245 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7246 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); 7247 return true; 7248 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7249 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7250 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7251 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7252 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); 7253 return true; 7254 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7255 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7256 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7257 return true; 7258 default: 7259 break; 7260 } 7261 } 7262 7263 return false; 7264 } 7265 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7266 #endif 7267 7268 static bool hci_run_general_pending_commands(void){ 7269 btstack_linked_item_t * it; 7270 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7271 hci_connection_t * connection = (hci_connection_t *) it; 7272 7273 switch(connection->state){ 7274 case SEND_CREATE_CONNECTION: 7275 switch(connection->address_type){ 7276 #ifdef ENABLE_CLASSIC 7277 case BD_ADDR_TYPE_ACL: 7278 log_info("sending hci_create_connection"); 7279 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7280 break; 7281 #endif 7282 default: 7283 #ifdef ENABLE_BLE 7284 #ifdef ENABLE_LE_CENTRAL 7285 log_info("sending hci_le_create_connection"); 7286 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7287 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7288 hci_send_le_create_connection(0, connection->address_type, connection->address); 7289 connection->state = SENT_CREATE_CONNECTION; 7290 #endif 7291 #endif 7292 break; 7293 } 7294 return true; 7295 7296 #ifdef ENABLE_CLASSIC 7297 case RECEIVED_CONNECTION_REQUEST: 7298 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7299 log_info("sending hci_accept_connection_request"); 7300 connection->state = ACCEPTED_CONNECTION_REQUEST; 7301 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7302 return true; 7303 } 7304 break; 7305 #endif 7306 case SEND_DISCONNECT: 7307 connection->state = SENT_DISCONNECT; 7308 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7309 return true; 7310 7311 default: 7312 break; 7313 } 7314 7315 // no further commands if connection is about to get shut down 7316 if (connection->state == SENT_DISCONNECT) continue; 7317 7318 #ifdef ENABLE_CLASSIC 7319 7320 // Handling link key request requires remote supported features 7321 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7322 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7323 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7324 7325 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7326 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7327 if (have_link_key && security_level_sufficient){ 7328 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7329 } else { 7330 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7331 } 7332 return true; 7333 } 7334 7335 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7336 log_info("denying to pin request"); 7337 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7338 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7339 return true; 7340 } 7341 7342 // security assessment requires remote features 7343 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7344 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7345 hci_ssp_assess_security_on_io_cap_request(connection); 7346 // 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 7347 } 7348 7349 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7350 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7351 // set authentication requirements: 7352 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7353 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7354 connection->io_cap_request_auth_req = hci_stack->ssp_authentication_requirement & 1; 7355 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7356 connection->io_cap_request_auth_req |= 1; 7357 } 7358 bool bonding = hci_stack->bondable; 7359 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7360 // if we have received IO Cap Response, we're in responder role 7361 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7362 if (bonding && !remote_bonding){ 7363 log_info("Remote not bonding, dropping local flag"); 7364 bonding = false; 7365 } 7366 } 7367 if (bonding){ 7368 if (connection->bonding_flags & BONDING_DEDICATED){ 7369 connection->io_cap_request_auth_req |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7370 } else { 7371 connection->io_cap_request_auth_req |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7372 } 7373 } 7374 uint8_t have_oob_data = 0; 7375 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7376 if (connection->classic_oob_c_192 != NULL){ 7377 have_oob_data |= 1; 7378 } 7379 if (connection->classic_oob_c_256 != NULL){ 7380 have_oob_data |= 2; 7381 } 7382 #endif 7383 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, connection->io_cap_request_auth_req); 7384 return true; 7385 } 7386 7387 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7388 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7389 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7390 return true; 7391 } 7392 7393 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7394 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7395 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7396 const uint8_t zero[16] = { 0 }; 7397 const uint8_t * r_192 = zero; 7398 const uint8_t * c_192 = zero; 7399 const uint8_t * r_256 = zero; 7400 const uint8_t * c_256 = zero; 7401 // verify P-256 OOB 7402 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7403 c_256 = connection->classic_oob_c_256; 7404 if (connection->classic_oob_r_256 != NULL) { 7405 r_256 = connection->classic_oob_r_256; 7406 } 7407 } 7408 // verify P-192 OOB 7409 if ((connection->classic_oob_c_192 != NULL)) { 7410 c_192 = connection->classic_oob_c_192; 7411 if (connection->classic_oob_r_192 != NULL) { 7412 r_192 = connection->classic_oob_r_192; 7413 } 7414 } 7415 7416 // assess security 7417 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7418 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7419 if (need_level_4 && !can_reach_level_4){ 7420 log_info("Level 4 required, but not possible -> abort"); 7421 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7422 // send oob negative reply 7423 c_256 = NULL; 7424 c_192 = NULL; 7425 } 7426 7427 // Reply 7428 if (c_256 != zero) { 7429 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7430 } else if (c_192 != zero){ 7431 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7432 } else { 7433 hci_stack->classic_oob_con_handle = connection->con_handle; 7434 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7435 } 7436 return true; 7437 } 7438 #endif 7439 7440 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7441 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7442 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7443 return true; 7444 } 7445 7446 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7447 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7448 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7449 return true; 7450 } 7451 7452 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7453 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7454 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7455 return true; 7456 } 7457 7458 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7459 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7460 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7461 connection->state = SENT_DISCONNECT; 7462 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7463 return true; 7464 } 7465 7466 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7467 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7468 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7469 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7470 return true; 7471 } 7472 7473 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7474 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7475 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7476 return true; 7477 } 7478 7479 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7480 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7481 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7482 return true; 7483 } 7484 7485 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7486 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7487 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7488 return true; 7489 } 7490 7491 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7492 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7493 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7494 return true; 7495 } 7496 7497 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7498 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7499 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7500 return true; 7501 } 7502 #endif 7503 7504 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7505 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7506 #ifdef ENABLE_CLASSIC 7507 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7508 #endif 7509 if (connection->state != SENT_DISCONNECT){ 7510 connection->state = SENT_DISCONNECT; 7511 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7512 return true; 7513 } 7514 } 7515 7516 #ifdef ENABLE_CLASSIC 7517 uint16_t sniff_min_interval; 7518 switch (connection->sniff_min_interval){ 7519 case 0: 7520 break; 7521 case 0xffff: 7522 connection->sniff_min_interval = 0; 7523 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7524 return true; 7525 default: 7526 sniff_min_interval = connection->sniff_min_interval; 7527 connection->sniff_min_interval = 0; 7528 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7529 return true; 7530 } 7531 7532 if (connection->sniff_subrating_max_latency != 0xffff){ 7533 uint16_t max_latency = connection->sniff_subrating_max_latency; 7534 connection->sniff_subrating_max_latency = 0; 7535 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7536 return true; 7537 } 7538 7539 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7540 uint8_t service_type = (uint8_t) connection->qos_service_type; 7541 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7542 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); 7543 return true; 7544 } 7545 7546 if (connection->request_role != HCI_ROLE_INVALID){ 7547 hci_role_t role = connection->request_role; 7548 connection->request_role = HCI_ROLE_INVALID; 7549 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7550 return true; 7551 } 7552 #endif 7553 7554 if (connection->gap_connection_tasks != 0){ 7555 #ifdef ENABLE_CLASSIC 7556 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7557 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7558 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7559 return true; 7560 } 7561 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7562 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7563 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7564 return true; 7565 } 7566 #endif 7567 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7568 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7569 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7570 return true; 7571 } 7572 #ifdef ENABLE_BLE 7573 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7574 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7575 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7576 return true; 7577 } 7578 #endif 7579 } 7580 7581 #ifdef ENABLE_BLE 7582 switch (connection->le_con_parameter_update_state){ 7583 // response to L2CAP CON PARAMETER UPDATE REQUEST 7584 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7585 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7586 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7587 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7588 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7589 return true; 7590 case CON_PARAMETER_UPDATE_REPLY: 7591 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7592 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7593 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7594 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7595 return true; 7596 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7597 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7598 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7599 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7600 return true; 7601 default: 7602 break; 7603 } 7604 if (connection->le_phy_update_all_phys != 0xffu){ 7605 uint8_t all_phys = connection->le_phy_update_all_phys; 7606 connection->le_phy_update_all_phys = 0xff; 7607 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); 7608 return true; 7609 } 7610 if (connection->le_subrate_min > 0){ 7611 uint16_t subrate_min = connection->le_subrate_min; 7612 connection->le_subrate_min = 0; 7613 hci_send_cmd(&hci_le_subrate_request, connection->con_handle, subrate_min, connection->le_subrate_max, connection->le_subrate_max_latency, 7614 connection->le_subrate_continuation_number, connection->le_supervision_timeout); 7615 return true; 7616 } 7617 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7618 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7619 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7620 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7621 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7622 return true; 7623 } 7624 if (connection->le_past_advertising_handle != 0xff){ 7625 uint8_t advertising_handle = connection->le_past_advertising_handle; 7626 connection->le_past_advertising_handle = 0xff; 7627 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7628 return true; 7629 } 7630 #endif 7631 #endif 7632 } 7633 return false; 7634 } 7635 7636 static void hci_run(void){ 7637 7638 // stack state sub statemachines 7639 switch (hci_stack->state) { 7640 case HCI_STATE_INITIALIZING: 7641 hci_initializing_run(); 7642 break; 7643 case HCI_STATE_HALTING: 7644 hci_halting_run(); 7645 break; 7646 case HCI_STATE_FALLING_ASLEEP: 7647 hci_falling_asleep_run(); 7648 break; 7649 default: 7650 break; 7651 } 7652 7653 // allow to run after initialization to working transition 7654 if (hci_stack->state != HCI_STATE_WORKING){ 7655 return; 7656 } 7657 7658 bool done; 7659 7660 // send continuation fragments first, as they block the prepared packet buffer 7661 done = hci_run_acl_fragments(); 7662 if (done) return; 7663 7664 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7665 done = hci_run_iso_fragments(); 7666 if (done) return; 7667 #endif 7668 7669 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7670 // send host num completed packets next as they don't require num_cmd_packets > 0 7671 if (!hci_can_send_command_packet_transport()) return; 7672 if (hci_stack->host_completed_packets){ 7673 hci_host_num_completed_packets(); 7674 return; 7675 } 7676 #endif 7677 7678 if (!hci_can_send_command_packet_now()) return; 7679 7680 // global/non-connection oriented commands 7681 7682 7683 #ifdef ENABLE_CLASSIC 7684 // general gap classic 7685 done = hci_run_general_gap_classic(); 7686 if (done) return; 7687 #endif 7688 7689 #ifdef ENABLE_BLE 7690 // general gap le 7691 done = hci_run_general_gap_le(); 7692 if (done) return; 7693 7694 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7695 // ISO related tasks, e.g. BIG create/terminate/sync 7696 done = hci_run_iso_tasks(); 7697 if (done) return; 7698 #endif 7699 #endif 7700 7701 // send pending HCI commands 7702 hci_run_general_pending_commands(); 7703 } 7704 7705 #ifdef ENABLE_CLASSIC 7706 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7707 // bits 6-9 are 'don't use' 7708 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7709 7710 // restrict packet types to local and remote supported 7711 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7712 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7713 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7714 } 7715 #endif 7716 7717 // funnel for sending cmd packet using single outgoing buffer 7718 static uint8_t hci_send_prepared_cmd_packet(void) { 7719 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7720 // cache opcode 7721 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7722 // get size 7723 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7724 // send packet 7725 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7726 // release packet buffer on error or for synchronous transport implementations 7727 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7728 hci_release_packet_buffer(); 7729 } 7730 return status; 7731 } 7732 7733 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7734 // house-keeping 7735 7736 #ifdef ENABLE_CLASSIC 7737 bd_addr_t addr; 7738 hci_connection_t * conn; 7739 #endif 7740 #ifdef ENABLE_LE_CENTRAL 7741 uint8_t initiator_filter_policy; 7742 #endif 7743 7744 uint16_t opcode = little_endian_read_16(packet, 0); 7745 switch (opcode) { 7746 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7747 hci_stack->loopback_mode = packet[3]; 7748 break; 7749 7750 #ifdef ENABLE_CLASSIC 7751 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7752 reverse_bd_addr(&packet[3], addr); 7753 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7754 7755 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7756 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7757 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7758 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7759 } 7760 7761 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7762 if (!conn) { 7763 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7764 if (!conn) { 7765 // notify client that alloc failed 7766 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7767 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7768 } 7769 conn->state = SEND_CREATE_CONNECTION; 7770 } 7771 7772 log_info("conn state %u", conn->state); 7773 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7774 switch (conn->state) { 7775 // if connection active exists 7776 case OPEN: 7777 // and OPEN, emit connection complete command 7778 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7779 // packet not sent to controller 7780 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7781 case RECEIVED_DISCONNECTION_COMPLETE: 7782 // create connection triggered in disconnect complete event, let's do it now 7783 break; 7784 case SEND_CREATE_CONNECTION: 7785 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7786 if (hci_classic_operation_active()){ 7787 return ERROR_CODE_SUCCESS; 7788 } 7789 #endif 7790 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7791 break; 7792 default: 7793 // otherwise, just ignore as it is already in the open process 7794 // packet not sent to controller 7795 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7796 } 7797 conn->state = SENT_CREATE_CONNECTION; 7798 7799 // track outgoing connection 7800 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7801 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7802 break; 7803 7804 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7805 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7806 if (conn == NULL) { 7807 // neither SCO nor ACL connection for con handle 7808 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7809 } else { 7810 uint16_t remote_supported_sco_packets; 7811 switch (conn->address_type){ 7812 case BD_ADDR_TYPE_ACL: 7813 // assert SCO connection does not exit 7814 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7815 return ERROR_CODE_COMMAND_DISALLOWED; 7816 } 7817 // cache remote sco packet types 7818 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7819 7820 // allocate connection struct 7821 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7822 HCI_ROLE_MASTER); 7823 if (!conn) { 7824 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7825 } 7826 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7827 break; 7828 case BD_ADDR_TYPE_SCO: 7829 // update of existing SCO connection 7830 break; 7831 default: 7832 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7833 } 7834 } 7835 7836 // conn refers to hci connection of type sco now 7837 7838 conn->state = SENT_CREATE_CONNECTION; 7839 7840 // track outgoing connection to handle command status with error 7841 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7842 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7843 7844 // setup_synchronous_connection? Voice setting at offset 22 7845 // TODO: compare to current setting if sco connection already active 7846 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7847 7848 // derive sco payload length from packet types 7849 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7850 break; 7851 7852 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7853 // get SCO connection 7854 reverse_bd_addr(&packet[3], addr); 7855 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7856 if (conn == NULL){ 7857 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7858 } 7859 7860 conn->state = ACCEPTED_CONNECTION_REQUEST; 7861 7862 // track outgoing connection to handle command status with error 7863 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7864 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7865 7866 // accept_synchronous_connection? Voice setting at offset 18 7867 // TODO: compare to current setting if sco connection already active 7868 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7869 7870 // derive sco payload length from packet types 7871 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7872 break; 7873 #endif 7874 7875 #ifdef ENABLE_BLE 7876 #ifdef ENABLE_LE_CENTRAL 7877 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7878 // white list used? 7879 initiator_filter_policy = packet[7]; 7880 switch (initiator_filter_policy) { 7881 case 0: 7882 // whitelist not used 7883 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7884 break; 7885 case 1: 7886 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7887 break; 7888 default: 7889 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7890 break; 7891 } 7892 // track outgoing connection 7893 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7894 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7895 break; 7896 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7897 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7898 // white list used? 7899 initiator_filter_policy = packet[3]; 7900 switch (initiator_filter_policy) { 7901 case 0: 7902 // whitelist not used 7903 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7904 break; 7905 case 1: 7906 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7907 break; 7908 default: 7909 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7910 break; 7911 } 7912 // track outgoing connection 7913 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7914 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7915 break; 7916 #endif 7917 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7918 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7919 break; 7920 #endif 7921 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7922 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7923 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7924 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7925 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7926 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7927 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7928 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7929 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7930 case HCI_OPCODE_HCI_LE_READ_PHY: 7931 case HCI_OPCODE_HCI_LE_SET_PHY: 7932 // conection handle is first command parameter 7933 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7934 break; 7935 #endif 7936 #endif /* ENABLE_BLE */ 7937 default: 7938 break; 7939 } 7940 7941 hci_stack->num_cmd_packets--; 7942 7943 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7944 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7945 uint8_t status; 7946 if (err == 0){ 7947 status = ERROR_CODE_SUCCESS; 7948 } else { 7949 status = ERROR_CODE_HARDWARE_FAILURE; 7950 } 7951 return status; 7952 } 7953 7954 // disconnect because of security block 7955 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7956 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7957 if (!connection) return; 7958 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7959 } 7960 7961 7962 // Configure Secure Simple Pairing 7963 7964 #ifdef ENABLE_CLASSIC 7965 7966 // enable will enable SSP during init 7967 void gap_ssp_set_enable(int enable){ 7968 hci_stack->ssp_enable = enable; 7969 } 7970 7971 static int hci_local_ssp_activated(void){ 7972 return gap_ssp_supported() && hci_stack->ssp_enable; 7973 } 7974 7975 // if set, BTstack will respond to io capability request using authentication requirement 7976 void gap_ssp_set_io_capability(int io_capability){ 7977 hci_stack->ssp_io_capability = io_capability; 7978 } 7979 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7980 hci_stack->ssp_authentication_requirement = authentication_requirement; 7981 } 7982 7983 // if set, BTstack will confirm a numeric comparison and enter '000000' if requested 7984 void gap_ssp_set_auto_accept(int auto_accept){ 7985 hci_stack->ssp_auto_accept = auto_accept; 7986 } 7987 7988 void gap_secure_connections_enable(bool enable){ 7989 hci_stack->secure_connections_enable = enable; 7990 } 7991 bool gap_secure_connections_active(void){ 7992 return hci_stack->secure_connections_active; 7993 } 7994 7995 #endif 7996 7997 // va_list part of hci_send_cmd 7998 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7999 if (!hci_can_send_command_packet_now()){ 8000 log_error("hci_send_cmd called but cannot send packet now"); 8001 return ERROR_CODE_COMMAND_DISALLOWED; 8002 } 8003 8004 hci_reserve_packet_buffer(); 8005 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 8006 return hci_send_prepared_cmd_packet(); 8007 } 8008 8009 /** 8010 * pre: num_commands >= 0 - it's allowed to send a command to the controller 8011 */ 8012 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 8013 va_list argptr; 8014 va_start(argptr, cmd); 8015 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 8016 va_end(argptr); 8017 return status; 8018 } 8019 8020 // Forward HCI events and create non-HCI events 8021 8022 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 8023 // dump packet 8024 if (dump) { 8025 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 8026 } 8027 8028 // dispatch to all event handlers 8029 btstack_linked_list_iterator_t it; 8030 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 8031 while (btstack_linked_list_iterator_has_next(&it)){ 8032 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 8033 entry->callback(HCI_EVENT_PACKET, 0, event, size); 8034 } 8035 } 8036 8037 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump){ 8038 #ifndef ENABLE_LOG_BTSTACK_EVENTS 8039 dump = 0; 8040 #endif 8041 hci_emit_event(event, size, dump); 8042 } 8043 8044 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 8045 if (!hci_stack->acl_packet_handler) return; 8046 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 8047 } 8048 8049 #ifdef ENABLE_CLASSIC 8050 static void hci_notify_if_sco_can_send_now(void){ 8051 // notify SCO sender if waiting 8052 if (!hci_stack->sco_waiting_for_can_send_now) return; 8053 if (hci_can_send_sco_packet_now()){ 8054 hci_stack->sco_waiting_for_can_send_now = 0; 8055 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 8056 hci_dump_btstack_event(event, sizeof(event)); 8057 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 8058 } 8059 } 8060 8061 // parsing end emitting has been merged to reduce code size 8062 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 8063 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 8064 8065 uint8_t * eir_data; 8066 ad_context_t context; 8067 const uint8_t * name; 8068 uint8_t name_len; 8069 8070 if (size < 3) return; 8071 8072 int event_type = hci_event_packet_get_type(packet); 8073 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 8074 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 8075 8076 switch (event_type){ 8077 case HCI_EVENT_INQUIRY_RESULT: 8078 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8079 if (size != (3 + (num_responses * 14))) return; 8080 break; 8081 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8082 if (size != 257) return; 8083 if (num_responses != 1) return; 8084 break; 8085 default: 8086 return; 8087 } 8088 8089 // event[1] is set at the end 8090 int i; 8091 for (i=0; i<num_responses;i++){ 8092 memset(event, 0, sizeof(event)); 8093 event[0] = GAP_EVENT_INQUIRY_RESULT; 8094 uint8_t event_size = 27; // if name is not set by EIR 8095 8096 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 8097 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 8098 (void)memcpy(&event[9], 8099 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 8100 3); // class of device 8101 (void)memcpy(&event[12], 8102 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 8103 2); // clock offset 8104 8105 switch (event_type){ 8106 case HCI_EVENT_INQUIRY_RESULT: 8107 // 14,15,16,17 = 0, size 18 8108 break; 8109 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8110 event[14] = 1; 8111 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8112 // 16,17 = 0, size 18 8113 break; 8114 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8115 event[14] = 1; 8116 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8117 // EIR packets only contain a single inquiry response 8118 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8119 name = NULL; 8120 // Iterate over EIR data 8121 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8122 uint8_t data_type = ad_iterator_get_data_type(&context); 8123 uint8_t data_size = ad_iterator_get_data_len(&context); 8124 const uint8_t * data = ad_iterator_get_data(&context); 8125 // Prefer Complete Local Name over Shortened Local Name 8126 switch (data_type){ 8127 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8128 if (name) continue; 8129 /* fall through */ 8130 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8131 name = data; 8132 name_len = data_size; 8133 break; 8134 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8135 if (data_size != 8) break; 8136 event[16] = 1; 8137 memcpy(&event[17], data, 8); 8138 break; 8139 default: 8140 break; 8141 } 8142 } 8143 if (name){ 8144 event[25] = 1; 8145 // truncate name if needed 8146 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8147 event[26] = len; 8148 (void)memcpy(&event[27], name, len); 8149 event_size += len; 8150 } 8151 break; 8152 default: 8153 return; 8154 } 8155 event[1] = event_size - 2; 8156 hci_emit_btstack_event(event, event_size, 1); 8157 } 8158 } 8159 #endif 8160 8161 void hci_emit_state(void){ 8162 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8163 uint8_t event[3]; 8164 event[0] = BTSTACK_EVENT_STATE; 8165 event[1] = sizeof(event) - 2u; 8166 event[2] = hci_stack->state; 8167 hci_emit_btstack_event(event, sizeof(event), 1); 8168 } 8169 8170 #ifdef ENABLE_CLASSIC 8171 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8172 uint8_t event[13]; 8173 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8174 event[1] = sizeof(event) - 2; 8175 event[2] = status; 8176 little_endian_store_16(event, 3, con_handle); 8177 reverse_bd_addr(address, &event[5]); 8178 event[11] = 1; // ACL connection 8179 event[12] = 0; // encryption disabled 8180 hci_emit_btstack_event(event, sizeof(event), 1); 8181 } 8182 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8183 if (disable_l2cap_timeouts) return; 8184 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8185 uint8_t event[4]; 8186 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8187 event[1] = sizeof(event) - 2; 8188 little_endian_store_16(event, 2, conn->con_handle); 8189 hci_emit_btstack_event(event, sizeof(event), 1); 8190 } 8191 #endif 8192 8193 #ifdef ENABLE_BLE 8194 #ifdef ENABLE_LE_CENTRAL 8195 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){ 8196 uint8_t hci_event[21]; 8197 hci_event[0] = HCI_EVENT_LE_META; 8198 hci_event[1] = sizeof(hci_event) - 2u; 8199 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8200 hci_event[3] = status; 8201 little_endian_store_16(hci_event, 4, con_handle); 8202 hci_event[6] = 0; // TODO: role 8203 hci_event[7] = address_type; 8204 reverse_bd_addr(address, &hci_event[8]); 8205 little_endian_store_16(hci_event, 14, 0); // interval 8206 little_endian_store_16(hci_event, 16, 0); // latency 8207 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8208 hci_event[20] = 0; // master clock accuracy 8209 hci_emit_btstack_event(hci_event, sizeof(hci_event), 1); 8210 // emit GAP event, too 8211 uint8_t gap_event[36]; 8212 hci_create_gap_connection_complete_event(hci_event, gap_event); 8213 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 8214 } 8215 #endif 8216 #endif 8217 8218 static void hci_emit_transport_packet_sent(void){ 8219 // notify upper stack that it might be possible to send again 8220 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8221 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 8222 } 8223 8224 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8225 uint8_t event[6]; 8226 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8227 event[1] = sizeof(event) - 2u; 8228 event[2] = 0; // status = OK 8229 little_endian_store_16(event, 3, con_handle); 8230 event[5] = reason; 8231 hci_emit_btstack_event(event, sizeof(event), 1); 8232 } 8233 8234 static void hci_emit_nr_connections_changed(void){ 8235 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8236 uint8_t event[3]; 8237 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8238 event[1] = sizeof(event) - 2u; 8239 event[2] = nr_hci_connections(); 8240 hci_emit_btstack_event(event, sizeof(event), 1); 8241 } 8242 8243 static void hci_emit_hci_open_failed(void){ 8244 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8245 uint8_t event[2]; 8246 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8247 event[1] = sizeof(event) - 2u; 8248 hci_emit_btstack_event(event, sizeof(event), 1); 8249 } 8250 8251 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8252 log_info("hci_emit_dedicated_bonding_result %u ", status); 8253 uint8_t event[9]; 8254 int pos = 0; 8255 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8256 event[pos++] = sizeof(event) - 2u; 8257 event[pos++] = status; 8258 reverse_bd_addr(address, &event[pos]); 8259 hci_emit_btstack_event(event, sizeof(event), 1); 8260 } 8261 8262 8263 #ifdef ENABLE_CLASSIC 8264 8265 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8266 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8267 uint8_t event[5]; 8268 int pos = 0; 8269 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8270 event[pos++] = sizeof(event) - 2; 8271 little_endian_store_16(event, 2, con_handle); 8272 pos += 2; 8273 event[pos++] = level; 8274 hci_emit_btstack_event(event, sizeof(event), 1); 8275 } 8276 8277 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8278 if (!connection) return LEVEL_0; 8279 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8280 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8281 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8282 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8283 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8284 // LEVEL 4 always requires 128 bit encryption key size 8285 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8286 security_level = LEVEL_3; 8287 } 8288 return security_level; 8289 } 8290 8291 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8292 uint8_t event[4]; 8293 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8294 event[1] = sizeof(event) - 2; 8295 event[2] = discoverable; 8296 event[3] = connectable; 8297 hci_emit_btstack_event(event, sizeof(event), 1); 8298 } 8299 8300 // query if remote side supports eSCO 8301 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8302 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8303 if (!connection) return false; 8304 return (connection->remote_supported_features[0] & 1) != 0; 8305 } 8306 8307 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8308 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8309 if (!connection) return 0; 8310 return connection->remote_supported_sco_packets; 8311 } 8312 8313 static bool hci_ssp_supported(hci_connection_t * connection){ 8314 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8315 return (connection->bonding_flags & mask) == mask; 8316 } 8317 8318 // query if remote side supports SSP 8319 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8320 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8321 if (!connection) return false; 8322 return hci_ssp_supported(connection) ? 1 : 0; 8323 } 8324 8325 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8326 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8327 } 8328 8329 /** 8330 * Check if remote supported features query has completed 8331 */ 8332 bool hci_remote_features_available(hci_con_handle_t handle){ 8333 hci_connection_t * connection = hci_connection_for_handle(handle); 8334 if (!connection) return false; 8335 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8336 } 8337 8338 /** 8339 * Trigger remote supported features query 8340 */ 8341 8342 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8343 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8344 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8345 } 8346 } 8347 8348 void hci_remote_features_query(hci_con_handle_t con_handle){ 8349 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8350 if (!connection) return; 8351 hci_trigger_remote_features_for_connection(connection); 8352 hci_run(); 8353 } 8354 8355 // GAP API 8356 /** 8357 * @bbrief enable/disable bonding. default is enabled 8358 * @praram enabled 8359 */ 8360 void gap_set_bondable_mode(int enable){ 8361 hci_stack->bondable = enable ? 1 : 0; 8362 } 8363 /** 8364 * @brief Get bondable mode. 8365 * @return 1 if bondable 8366 */ 8367 int gap_get_bondable_mode(void){ 8368 return hci_stack->bondable; 8369 } 8370 8371 /** 8372 * @brief map link keys to security levels 8373 */ 8374 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8375 switch (link_key_type){ 8376 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8377 return LEVEL_4; 8378 case COMBINATION_KEY: 8379 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8380 return LEVEL_3; 8381 default: 8382 return LEVEL_2; 8383 } 8384 } 8385 8386 /** 8387 * @brief map link keys to secure connection yes/no 8388 */ 8389 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8390 switch (link_key_type){ 8391 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8392 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8393 return true; 8394 default: 8395 return false; 8396 } 8397 } 8398 8399 /** 8400 * @brief map link keys to authenticated 8401 */ 8402 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8403 switch (link_key_type){ 8404 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8405 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8406 return true; 8407 default: 8408 return false; 8409 } 8410 } 8411 8412 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8413 log_info("gap_mitm_protection_required_for_security_level %u", level); 8414 return level > LEVEL_2; 8415 } 8416 8417 /** 8418 * @brief get current security level 8419 */ 8420 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8421 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8422 if (!connection) return LEVEL_0; 8423 return gap_security_level_for_connection(connection); 8424 } 8425 8426 /** 8427 * @brief request connection to device to 8428 * @result GAP_AUTHENTICATION_RESULT 8429 */ 8430 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8431 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8432 if (!connection){ 8433 hci_emit_security_level(con_handle, LEVEL_0); 8434 return; 8435 } 8436 8437 btstack_assert(hci_is_le_connection(connection) == false); 8438 8439 // 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) 8440 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8441 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8442 requested_level = LEVEL_4; 8443 } 8444 8445 gap_security_level_t current_level = gap_security_level(con_handle); 8446 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8447 requested_level, connection->requested_security_level, current_level); 8448 8449 // authentication active if authentication request was sent or planned level > 0 8450 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8451 if (authentication_active){ 8452 // authentication already active 8453 if (connection->requested_security_level < requested_level){ 8454 // increase requested level as new level is higher 8455 // TODO: handle re-authentication when done 8456 connection->requested_security_level = requested_level; 8457 } 8458 } else { 8459 // no request active, notify if security sufficient 8460 if (requested_level <= current_level){ 8461 hci_emit_security_level(con_handle, current_level); 8462 return; 8463 } 8464 8465 // store request 8466 connection->requested_security_level = requested_level; 8467 8468 // start to authenticate connection 8469 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8470 8471 // request remote features if not already active, also trigger hci_run 8472 hci_remote_features_query(con_handle); 8473 } 8474 } 8475 8476 /** 8477 * @brief start dedicated bonding with device. disconnect after bonding 8478 * @param device 8479 * @param request MITM protection 8480 * @result GAP_DEDICATED_BONDING_COMPLETE 8481 */ 8482 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8483 8484 // create connection state machine 8485 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8486 8487 if (!connection){ 8488 return BTSTACK_MEMORY_ALLOC_FAILED; 8489 } 8490 8491 // delete link key 8492 gap_drop_link_key_for_bd_addr(device); 8493 8494 // configure LEVEL_2/3, dedicated bonding 8495 connection->state = SEND_CREATE_CONNECTION; 8496 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8497 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8498 connection->bonding_flags = BONDING_DEDICATED; 8499 8500 hci_run(); 8501 8502 return 0; 8503 } 8504 8505 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8506 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8507 if (connection == NULL){ 8508 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8509 } 8510 if (defer){ 8511 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8512 } else { 8513 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8514 // trigger disconnect 8515 hci_run(); 8516 } 8517 return ERROR_CODE_SUCCESS; 8518 } 8519 8520 void gap_set_local_name(const char * local_name){ 8521 hci_stack->local_name = local_name; 8522 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8523 // also update EIR if not set by user 8524 if (hci_stack->eir_data == NULL){ 8525 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8526 } 8527 hci_run(); 8528 } 8529 #endif 8530 8531 8532 #ifdef ENABLE_BLE 8533 8534 #ifdef ENABLE_LE_CENTRAL 8535 void gap_start_scan(void){ 8536 hci_stack->le_scanning_enabled = true; 8537 hci_run(); 8538 } 8539 8540 void gap_stop_scan(void){ 8541 hci_stack->le_scanning_enabled = false; 8542 hci_run(); 8543 } 8544 8545 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8546 hci_stack->le_scan_type = scan_type; 8547 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8548 hci_stack->le_scan_interval = scan_interval; 8549 hci_stack->le_scan_window = scan_window; 8550 hci_stack->le_scanning_param_update = true; 8551 hci_run(); 8552 } 8553 8554 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8555 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8556 } 8557 8558 void gap_set_scan_duplicate_filter(bool enabled){ 8559 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8560 } 8561 8562 void gap_set_scan_phys(uint8_t phys){ 8563 // LE Coded and LE 1M PHY 8564 hci_stack->le_scan_phys = phys & 0x05; 8565 } 8566 8567 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8568 // disallow le connection if outgoing already active 8569 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8570 log_error("le connect already active"); 8571 return ERROR_CODE_COMMAND_DISALLOWED; 8572 } 8573 8574 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8575 if (conn == NULL) { 8576 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8577 if (conn == NULL){ 8578 // alloc failed 8579 log_info("gap_connect: failed to alloc hci_connection_t"); 8580 return BTSTACK_MEMORY_ALLOC_FAILED; 8581 } 8582 } else { 8583 switch (conn->state) { 8584 case RECEIVED_DISCONNECTION_COMPLETE: 8585 // connection was just disconnected, reset state and allow re-connect 8586 conn->role = HCI_ROLE_MASTER; 8587 break; 8588 default: 8589 return ERROR_CODE_COMMAND_DISALLOWED; 8590 } 8591 } 8592 8593 // set le connecting state 8594 if (hci_is_le_connection_type(addr_type)){ 8595 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8596 } 8597 8598 // trigger connect 8599 log_info("gap_connect: send create connection next"); 8600 conn->state = SEND_CREATE_CONNECTION; 8601 hci_run(); 8602 return ERROR_CODE_SUCCESS; 8603 } 8604 8605 // @assumption: only a single outgoing LE Connection exists 8606 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8607 btstack_linked_item_t *it; 8608 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8609 hci_connection_t * conn = (hci_connection_t *) it; 8610 if (hci_is_le_connection(conn)){ 8611 switch (conn->state){ 8612 case SEND_CREATE_CONNECTION: 8613 case SENT_CREATE_CONNECTION: 8614 return conn; 8615 default: 8616 break; 8617 }; 8618 } 8619 } 8620 return NULL; 8621 } 8622 8623 uint8_t gap_connect_cancel(void){ 8624 hci_connection_t * conn; 8625 switch (hci_stack->le_connecting_request){ 8626 case LE_CONNECTING_IDLE: 8627 break; 8628 case LE_CONNECTING_WHITELIST: 8629 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8630 hci_run(); 8631 break; 8632 case LE_CONNECTING_DIRECT: 8633 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8634 conn = gap_get_outgoing_le_connection(); 8635 if (conn == NULL){ 8636 hci_run(); 8637 } else { 8638 switch (conn->state){ 8639 case SEND_CREATE_CONNECTION: 8640 // skip sending create connection and emit event instead 8641 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8642 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8643 btstack_memory_hci_connection_free( conn ); 8644 break; 8645 case SENT_CREATE_CONNECTION: 8646 // let hci_run_general_gap_le cancel outgoing connection 8647 hci_run(); 8648 break; 8649 default: 8650 break; 8651 } 8652 } 8653 break; 8654 default: 8655 btstack_unreachable(); 8656 break; 8657 } 8658 return ERROR_CODE_SUCCESS; 8659 } 8660 8661 /** 8662 * @brief Set connection parameters for outgoing connections 8663 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8664 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8665 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8666 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8667 * @param conn_latency, default: 4 8668 * @param supervision_timeout (unit: 10ms), default: 720 ms 8669 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8670 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8671 */ 8672 8673 void gap_set_connection_phys(uint8_t phys){ 8674 // LE Coded, LE 1M, LE 2M PHY 8675 hci_stack->le_connection_phys = phys & 7; 8676 } 8677 8678 #endif 8679 8680 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8681 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8682 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8683 hci_stack->le_connection_scan_interval = conn_scan_interval; 8684 hci_stack->le_connection_scan_window = conn_scan_window; 8685 hci_stack->le_connection_interval_min = conn_interval_min; 8686 hci_stack->le_connection_interval_max = conn_interval_max; 8687 hci_stack->le_connection_latency = conn_latency; 8688 hci_stack->le_supervision_timeout = supervision_timeout; 8689 hci_stack->le_minimum_ce_length = min_ce_length; 8690 hci_stack->le_maximum_ce_length = max_ce_length; 8691 } 8692 8693 /** 8694 * @brief Updates the connection parameters for a given LE connection 8695 * @param handle 8696 * @param conn_interval_min (unit: 1.25ms) 8697 * @param conn_interval_max (unit: 1.25ms) 8698 * @param conn_latency 8699 * @param supervision_timeout (unit: 10ms) 8700 * @return 0 if ok 8701 */ 8702 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8703 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8704 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8705 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8706 connection->le_conn_interval_min = conn_interval_min; 8707 connection->le_conn_interval_max = conn_interval_max; 8708 connection->le_conn_latency = conn_latency; 8709 connection->le_supervision_timeout = supervision_timeout; 8710 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8711 hci_run(); 8712 return 0; 8713 } 8714 8715 /** 8716 * @brief Request an update of the connection parameter for a given LE connection 8717 * @param handle 8718 * @param conn_interval_min (unit: 1.25ms) 8719 * @param conn_interval_max (unit: 1.25ms) 8720 * @param conn_latency 8721 * @param supervision_timeout (unit: 10ms) 8722 * @return 0 if ok 8723 */ 8724 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8725 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8726 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8727 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8728 connection->le_conn_interval_min = conn_interval_min; 8729 connection->le_conn_interval_max = conn_interval_max; 8730 connection->le_conn_latency = conn_latency; 8731 connection->le_supervision_timeout = supervision_timeout; 8732 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8733 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8734 hci_emit_btstack_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8735 return 0; 8736 } 8737 8738 uint8_t gap_request_connection_subrating(hci_con_handle_t con_handle, uint16_t subrate_min, uint16_t subrate_max, 8739 uint16_t max_latency, uint16_t continuation_number, uint16_t supervision_timeout){ 8740 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8741 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8742 8743 connection->le_subrate_min = subrate_min; 8744 connection->le_subrate_max = subrate_max; 8745 connection->le_subrate_max_latency = max_latency; 8746 connection->le_subrate_continuation_number = continuation_number; 8747 connection->le_supervision_timeout = supervision_timeout; 8748 hci_run(); 8749 return ERROR_CODE_SUCCESS; 8750 } 8751 8752 #ifdef ENABLE_LE_PERIPHERAL 8753 8754 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8755 static void hci_assert_advertisement_set_0_ready(void){ 8756 // force advertising set creation for legacy LE Advertising 8757 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8758 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8759 } 8760 } 8761 #endif 8762 8763 /** 8764 * @brief Set Advertisement Data 8765 * @param advertising_data_length 8766 * @param advertising_data (max 31 octets) 8767 * @note data is not copied, pointer has to stay valid 8768 */ 8769 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8770 hci_stack->le_advertisements_data_len = advertising_data_length; 8771 hci_stack->le_advertisements_data = advertising_data; 8772 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8773 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8774 hci_assert_advertisement_set_0_ready(); 8775 #endif 8776 hci_run(); 8777 } 8778 8779 /** 8780 * @brief Set Scan Response Data 8781 * @param advertising_data_length 8782 * @param advertising_data (max 31 octets) 8783 * @note data is not copied, pointer has to stay valid 8784 */ 8785 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8786 hci_stack->le_scan_response_data_len = scan_response_data_length; 8787 hci_stack->le_scan_response_data = scan_response_data; 8788 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8789 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8790 hci_assert_advertisement_set_0_ready(); 8791 #endif 8792 hci_run(); 8793 } 8794 8795 /** 8796 * @brief Set Advertisement Parameters 8797 * @param adv_int_min 8798 * @param adv_int_max 8799 * @param adv_type 8800 * @param direct_address_type 8801 * @param direct_address 8802 * @param channel_map 8803 * @param filter_policy 8804 * 8805 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8806 */ 8807 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8808 uint8_t direct_address_typ, bd_addr_t direct_address, 8809 uint8_t channel_map, uint8_t filter_policy) { 8810 8811 hci_stack->le_advertisements_interval_min = adv_int_min; 8812 hci_stack->le_advertisements_interval_max = adv_int_max; 8813 hci_stack->le_advertisements_type = adv_type; 8814 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8815 hci_stack->le_advertisements_channel_map = channel_map; 8816 hci_stack->le_advertisements_filter_policy = filter_policy; 8817 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8818 6); 8819 8820 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8821 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8822 hci_run(); 8823 } 8824 8825 /** 8826 * @brief Enable/Disable Advertisements 8827 * @param enabled 8828 */ 8829 void gap_advertisements_enable(int enabled){ 8830 if (enabled == 0){ 8831 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8832 } else { 8833 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8834 } 8835 hci_update_advertisements_enabled_for_current_roles(); 8836 hci_run(); 8837 } 8838 8839 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8840 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8841 btstack_linked_list_iterator_t it; 8842 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8843 while (btstack_linked_list_iterator_has_next(&it)){ 8844 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8845 if ( item->advertising_handle == advertising_handle ) { 8846 return item; 8847 } 8848 } 8849 return NULL; 8850 } 8851 8852 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8853 hci_stack->le_resolvable_private_address_update_s = update_s; 8854 hci_run(); 8855 return ERROR_CODE_SUCCESS; 8856 } 8857 8858 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8859 // find free advertisement handle. we use LE_EXTENDED_ADVERTISING_LEGACY_HANDLE for non-extended advertising 8860 uint8_t advertisement_handle; 8861 for (advertisement_handle = LE_EXTENDED_ADVERTISING_LEGACY_HANDLE + 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8862 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8863 } 8864 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8865 // clear 8866 memset(storage, 0, sizeof(le_advertising_set_t)); 8867 // copy params 8868 storage->advertising_handle = advertisement_handle; 8869 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8870 // add to list 8871 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8872 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8873 *out_advertising_handle = advertisement_handle; 8874 // set tasks and start 8875 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8876 hci_run(); 8877 return ERROR_CODE_SUCCESS; 8878 } 8879 8880 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8881 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8882 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8883 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8884 // set tasks and start 8885 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8886 hci_run(); 8887 return ERROR_CODE_SUCCESS; 8888 } 8889 8890 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8891 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8892 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8893 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8894 return ERROR_CODE_SUCCESS; 8895 } 8896 8897 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8898 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8899 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8900 memcpy(advertising_set->random_address, random_address, 6); 8901 // set tasks and start 8902 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8903 hci_run(); 8904 return ERROR_CODE_SUCCESS; 8905 } 8906 8907 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8908 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8909 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8910 advertising_set->adv_data = advertising_data; 8911 advertising_set->adv_data_len = advertising_data_length; 8912 // set tasks and start 8913 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8914 hci_run(); 8915 return ERROR_CODE_SUCCESS; 8916 } 8917 8918 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){ 8919 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8920 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8921 advertising_set->scan_data = scan_response_data; 8922 advertising_set->scan_data_len = scan_response_data_length; 8923 // set tasks and start 8924 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8925 hci_run(); 8926 return ERROR_CODE_SUCCESS; 8927 } 8928 8929 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8930 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8931 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8932 advertising_set->enable_timeout = timeout; 8933 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8934 // set tasks and start 8935 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8936 hci_run(); 8937 return ERROR_CODE_SUCCESS; 8938 } 8939 8940 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8941 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8942 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8943 // set tasks and start 8944 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8945 hci_run(); 8946 return ERROR_CODE_SUCCESS; 8947 } 8948 8949 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8950 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8951 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8952 // set tasks and start 8953 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8954 hci_run(); 8955 return ERROR_CODE_SUCCESS; 8956 } 8957 8958 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8959 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8960 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8961 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8962 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8963 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8964 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8965 // set tasks and start 8966 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8967 hci_run(); 8968 return ERROR_CODE_SUCCESS; 8969 } 8970 8971 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8972 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8973 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8974 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8975 return ERROR_CODE_SUCCESS; 8976 } 8977 8978 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8979 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8980 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8981 advertising_set->periodic_data = periodic_data; 8982 advertising_set->periodic_data_len = periodic_data_length; 8983 // set tasks and start 8984 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8985 hci_run(); 8986 return ERROR_CODE_SUCCESS; 8987 } 8988 8989 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8990 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8991 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8992 // set tasks and start 8993 advertising_set->periodic_include_adi = include_adi; 8994 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8995 hci_run(); 8996 return ERROR_CODE_SUCCESS; 8997 } 8998 8999 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 9000 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 9001 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9002 // set tasks and start 9003 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 9004 hci_run(); 9005 return ERROR_CODE_SUCCESS; 9006 } 9007 9008 #ifdef ENABLE_LE_CENTRAL 9009 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 9010 hci_stack->le_past_mode = mode; 9011 hci_stack->le_past_skip = skip; 9012 hci_stack->le_past_sync_timeout = sync_timeout; 9013 hci_stack->le_past_cte_type = cte_type; 9014 hci_stack->le_past_set_default_params = true; 9015 hci_run(); 9016 return ERROR_CODE_SUCCESS; 9017 } 9018 9019 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 9020 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9021 if (hci_connection == NULL){ 9022 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9023 } 9024 hci_connection->le_past_sync_handle = sync_handle; 9025 hci_connection->le_past_service_data = service_data; 9026 hci_run(); 9027 return ERROR_CODE_SUCCESS; 9028 } 9029 #endif 9030 9031 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 9032 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9033 if (hci_connection == NULL){ 9034 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9035 } 9036 hci_connection->le_past_advertising_handle = advertising_handle; 9037 hci_connection->le_past_service_data = service_data; 9038 hci_run(); 9039 return ERROR_CODE_SUCCESS; 9040 } 9041 9042 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 9043 9044 #endif 9045 9046 #endif 9047 9048 void hci_le_set_own_address_type(uint8_t own_address_type){ 9049 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 9050 if (own_address_type == hci_stack->le_own_addr_type) return; 9051 hci_stack->le_own_addr_type = own_address_type; 9052 9053 #ifdef ENABLE_LE_PERIPHERAL 9054 // update advertisement parameters, too 9055 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 9056 hci_run(); 9057 #endif 9058 #ifdef ENABLE_LE_CENTRAL 9059 // note: we don't update scan parameters or modify ongoing connection attempts 9060 #endif 9061 } 9062 9063 void hci_le_random_address_set(const bd_addr_t random_address){ 9064 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 9065 memcpy(hci_stack->le_random_address, random_address, 6); 9066 hci_stack->le_random_address_set = true; 9067 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 9068 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9069 if (hci_le_extended_advertising_supported()){ 9070 hci_assert_advertisement_set_0_ready(); 9071 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 9072 } 9073 #endif 9074 hci_run(); 9075 } 9076 9077 #endif 9078 9079 uint8_t gap_disconnect(hci_con_handle_t handle){ 9080 hci_connection_t * conn = hci_connection_for_handle(handle); 9081 if (!conn){ 9082 hci_emit_disconnection_complete(handle, 0); 9083 return 0; 9084 } 9085 uint8_t status = ERROR_CODE_SUCCESS; 9086 switch (conn->state){ 9087 case RECEIVED_DISCONNECTION_COMPLETE: 9088 // ignore if remote just disconnected 9089 break; 9090 case SEND_DISCONNECT: 9091 case SENT_DISCONNECT: 9092 // disconnect already requested or sent 9093 status = ERROR_CODE_COMMAND_DISALLOWED; 9094 break; 9095 default: 9096 // trigger hci_disconnect 9097 conn->state = SEND_DISCONNECT; 9098 hci_run(); 9099 break; 9100 } 9101 return status; 9102 } 9103 9104 int gap_read_rssi(hci_con_handle_t con_handle){ 9105 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9106 if (hci_connection == NULL) return 0; 9107 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 9108 hci_run(); 9109 return 1; 9110 } 9111 9112 /** 9113 * @brief Get connection type 9114 * @param con_handle 9115 * @result connection_type 9116 */ 9117 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 9118 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9119 if (!conn) return GAP_CONNECTION_INVALID; 9120 switch (conn->address_type){ 9121 case BD_ADDR_TYPE_LE_PUBLIC: 9122 case BD_ADDR_TYPE_LE_RANDOM: 9123 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9124 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9125 return GAP_CONNECTION_LE; 9126 case BD_ADDR_TYPE_SCO: 9127 return GAP_CONNECTION_SCO; 9128 case BD_ADDR_TYPE_ACL: 9129 return GAP_CONNECTION_ACL; 9130 default: 9131 return GAP_CONNECTION_INVALID; 9132 } 9133 } 9134 9135 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9136 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9137 if (!conn) return HCI_ROLE_INVALID; 9138 return (hci_role_t) conn->role; 9139 } 9140 9141 9142 #ifdef ENABLE_CLASSIC 9143 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9144 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9145 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9146 conn->request_role = role; 9147 hci_run(); 9148 return ERROR_CODE_SUCCESS; 9149 } 9150 #endif 9151 9152 #ifdef ENABLE_BLE 9153 9154 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){ 9155 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9156 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9157 9158 conn->le_phy_update_all_phys = all_phys; 9159 conn->le_phy_update_tx_phys = tx_phys; 9160 conn->le_phy_update_rx_phys = rx_phys; 9161 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9162 9163 hci_run(); 9164 9165 return 0; 9166 } 9167 9168 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9169 9170 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9171 // incorrect configuration: 9172 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9173 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9174 btstack_assert(false); 9175 #endif 9176 9177 // check if already in list 9178 btstack_linked_list_iterator_t it; 9179 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9180 while (btstack_linked_list_iterator_has_next(&it)) { 9181 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9182 if (entry->address_type != address_type) { 9183 continue; 9184 } 9185 if (memcmp(entry->address, address, 6) != 0) { 9186 continue; 9187 } 9188 9189 // if already on controller: 9190 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9191 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9192 // drop remove request 9193 entry->state = LE_WHITELIST_ON_CONTROLLER; 9194 return ERROR_CODE_SUCCESS; 9195 } else { 9196 // disallow as already on controller 9197 return ERROR_CODE_COMMAND_DISALLOWED; 9198 } 9199 } 9200 9201 // assume scheduled to add 9202 return ERROR_CODE_COMMAND_DISALLOWED; 9203 } 9204 9205 // alloc and add to list 9206 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9207 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9208 entry->address_type = address_type; 9209 (void)memcpy(entry->address, address, 6); 9210 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9211 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9212 return ERROR_CODE_SUCCESS; 9213 } 9214 9215 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9216 btstack_linked_list_iterator_t it; 9217 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9218 while (btstack_linked_list_iterator_has_next(&it)){ 9219 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9220 if (entry->address_type != address_type) { 9221 continue; 9222 } 9223 if (memcmp(entry->address, address, 6) != 0) { 9224 continue; 9225 } 9226 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9227 // remove from controller if already present 9228 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9229 } else { 9230 // directly remove entry from whitelist 9231 btstack_linked_list_iterator_remove(&it); 9232 btstack_memory_whitelist_entry_free(entry); 9233 } 9234 return ERROR_CODE_SUCCESS; 9235 } 9236 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9237 } 9238 9239 static void hci_whitelist_clear(void){ 9240 btstack_linked_list_iterator_t it; 9241 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9242 while (btstack_linked_list_iterator_has_next(&it)){ 9243 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9244 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9245 // remove from controller if already present 9246 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9247 continue; 9248 } 9249 // directly remove entry from whitelist 9250 btstack_linked_list_iterator_remove(&it); 9251 btstack_memory_whitelist_entry_free(entry); 9252 } 9253 } 9254 9255 /** 9256 * @brief Clear Whitelist 9257 * @return 0 if ok 9258 */ 9259 uint8_t gap_whitelist_clear(void){ 9260 hci_whitelist_clear(); 9261 hci_run(); 9262 return ERROR_CODE_SUCCESS; 9263 } 9264 9265 /** 9266 * @brief Add Device to Whitelist 9267 * @param address_typ 9268 * @param address 9269 * @return 0 if ok 9270 */ 9271 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9272 uint8_t status = hci_whitelist_add(address_type, address); 9273 if (status){ 9274 return status; 9275 } 9276 hci_run(); 9277 return ERROR_CODE_SUCCESS; 9278 } 9279 9280 /** 9281 * @brief Remove Device from Whitelist 9282 * @param address_typ 9283 * @param address 9284 * @return 0 if ok 9285 */ 9286 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9287 uint8_t status = hci_whitelist_remove(address_type, address); 9288 if (status){ 9289 return status; 9290 } 9291 hci_run(); 9292 return ERROR_CODE_SUCCESS; 9293 } 9294 9295 #ifdef ENABLE_LE_CENTRAL 9296 /** 9297 * @brief Connect with Whitelist 9298 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9299 * @return - if ok 9300 */ 9301 uint8_t gap_connect_with_whitelist(void){ 9302 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9303 return ERROR_CODE_COMMAND_DISALLOWED; 9304 } 9305 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9306 hci_run(); 9307 return ERROR_CODE_SUCCESS; 9308 } 9309 9310 /** 9311 * @brief Auto Connection Establishment - Start Connecting to device 9312 * @param address_typ 9313 * @param address 9314 * @return 0 if ok 9315 */ 9316 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9317 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9318 return ERROR_CODE_COMMAND_DISALLOWED; 9319 } 9320 9321 uint8_t status = hci_whitelist_add(address_type, address); 9322 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9323 return status; 9324 } 9325 9326 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9327 9328 hci_run(); 9329 return ERROR_CODE_SUCCESS; 9330 } 9331 9332 /** 9333 * @brief Auto Connection Establishment - Stop Connecting to device 9334 * @param address_typ 9335 * @param address 9336 * @return 0 if ok 9337 */ 9338 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9339 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9340 return ERROR_CODE_COMMAND_DISALLOWED; 9341 } 9342 9343 hci_whitelist_remove(address_type, address); 9344 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9345 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9346 } 9347 hci_run(); 9348 return 0; 9349 } 9350 9351 /** 9352 * @brief Auto Connection Establishment - Stop everything 9353 * @note Convenience function to stop all active auto connection attempts 9354 */ 9355 uint8_t gap_auto_connection_stop_all(void){ 9356 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9357 return ERROR_CODE_COMMAND_DISALLOWED; 9358 } 9359 hci_whitelist_clear(); 9360 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9361 hci_run(); 9362 return ERROR_CODE_SUCCESS; 9363 } 9364 9365 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9366 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9367 if (!conn) return 0; 9368 return conn->le_connection_interval; 9369 } 9370 #endif 9371 #endif 9372 9373 #ifdef ENABLE_CLASSIC 9374 /** 9375 * @brief Set Extended Inquiry Response data 9376 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9377 * @note has to be done before stack starts up 9378 */ 9379 void gap_set_extended_inquiry_response(const uint8_t * data){ 9380 hci_stack->eir_data = data; 9381 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9382 hci_run(); 9383 } 9384 9385 /** 9386 * @brief Start GAP Classic Inquiry 9387 * @param duration in 1.28s units 9388 * @return 0 if ok 9389 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9390 */ 9391 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9392 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9393 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9394 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9395 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9396 } 9397 hci_stack->inquiry_state = duration_in_1280ms_units; 9398 hci_stack->inquiry_max_period_length = 0; 9399 hci_stack->inquiry_min_period_length = 0; 9400 hci_run(); 9401 return 0; 9402 } 9403 9404 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9405 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9406 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9407 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9408 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9409 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9410 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9411 9412 hci_stack->inquiry_state = duration; 9413 hci_stack->inquiry_max_period_length = max_period_length; 9414 hci_stack->inquiry_min_period_length = min_period_length; 9415 hci_run(); 9416 return 0; 9417 } 9418 9419 /** 9420 * @brief Stop GAP Classic Inquiry 9421 * @return 0 if ok 9422 */ 9423 int gap_inquiry_stop(void){ 9424 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9425 // emit inquiry complete event, before it even started 9426 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9427 hci_emit_btstack_event(event, sizeof(event), 1); 9428 return 0; 9429 } 9430 switch (hci_stack->inquiry_state){ 9431 case GAP_INQUIRY_STATE_ACTIVE: 9432 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9433 hci_run(); 9434 return ERROR_CODE_SUCCESS; 9435 case GAP_INQUIRY_STATE_PERIODIC: 9436 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9437 hci_run(); 9438 return ERROR_CODE_SUCCESS; 9439 default: 9440 return ERROR_CODE_COMMAND_DISALLOWED; 9441 } 9442 } 9443 9444 void gap_inquiry_set_lap(uint32_t lap){ 9445 hci_stack->inquiry_lap = lap; 9446 } 9447 9448 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9449 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9450 hci_stack->inquiry_scan_window = inquiry_scan_window; 9451 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9452 hci_run(); 9453 } 9454 9455 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9456 { 9457 hci_stack->inquiry_tx_power_level = tx_power; 9458 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9459 hci_run(); 9460 } 9461 9462 9463 /** 9464 * @brief Remote Name Request 9465 * @param addr 9466 * @param page_scan_repetition_mode 9467 * @param clock_offset only used when bit 15 is set 9468 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9469 */ 9470 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9471 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9472 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9473 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9474 hci_stack->remote_name_clock_offset = clock_offset; 9475 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9476 hci_run(); 9477 return 0; 9478 } 9479 9480 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9481 hci_stack->gap_pairing_state = state; 9482 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9483 hci_run(); 9484 return 0; 9485 } 9486 9487 /** 9488 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9489 * @param addr 9490 * @param pin_data 9491 * @param pin_len 9492 * @return 0 if ok 9493 */ 9494 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9495 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9496 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9497 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9498 hci_stack->gap_pairing_pin_len = pin_len; 9499 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9500 } 9501 9502 /** 9503 * @brief Legacy Pairing Pin Code Response 9504 * @param addr 9505 * @param pin 9506 * @return 0 if ok 9507 */ 9508 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9509 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9510 } 9511 9512 /** 9513 * @brief Abort Legacy Pairing 9514 * @param addr 9515 * @param pin 9516 * @return 0 if ok 9517 */ 9518 int gap_pin_code_negative(bd_addr_t addr){ 9519 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9520 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9521 } 9522 9523 /** 9524 * @brief SSP Passkey Response 9525 * @param addr 9526 * @param passkey 9527 * @return 0 if ok 9528 */ 9529 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9530 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9531 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9532 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9533 } 9534 9535 /** 9536 * @brief Abort SSP Passkey Entry/Pairing 9537 * @param addr 9538 * @param pin 9539 * @return 0 if ok 9540 */ 9541 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9542 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9543 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9544 } 9545 9546 /** 9547 * @brief Accept SSP Numeric Comparison 9548 * @param addr 9549 * @param passkey 9550 * @return 0 if ok 9551 */ 9552 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9553 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9554 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9555 } 9556 9557 /** 9558 * @brief Abort SSP Numeric Comparison/Pairing 9559 * @param addr 9560 * @param pin 9561 * @return 0 if ok 9562 */ 9563 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9564 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9565 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9566 } 9567 9568 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9569 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9570 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9571 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9572 connectionSetAuthenticationFlags(conn, flag); 9573 hci_run(); 9574 return ERROR_CODE_SUCCESS; 9575 } 9576 #endif 9577 9578 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9579 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9580 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9581 } 9582 9583 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9584 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9585 } 9586 #endif 9587 9588 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9589 /** 9590 * @brief Report Remote OOB Data 9591 * @param bd_addr 9592 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9593 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9594 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9595 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9596 */ 9597 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){ 9598 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9599 if (connection == NULL) { 9600 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9601 } 9602 connection->classic_oob_c_192 = c_192; 9603 connection->classic_oob_r_192 = r_192; 9604 9605 // ignore P-256 if not supported by us 9606 if (hci_stack->secure_connections_active){ 9607 connection->classic_oob_c_256 = c_256; 9608 connection->classic_oob_r_256 = r_256; 9609 } 9610 9611 return ERROR_CODE_SUCCESS; 9612 } 9613 /** 9614 * @brief Generate new OOB data 9615 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9616 */ 9617 void gap_ssp_generate_oob_data(void){ 9618 hci_stack->classic_read_local_oob_data = true; 9619 hci_run(); 9620 } 9621 9622 #endif 9623 9624 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9625 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9626 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9627 if (connection == NULL) { 9628 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9629 } 9630 9631 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9632 connection->link_key_type = type; 9633 9634 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9635 } 9636 9637 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9638 /** 9639 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9640 * @param inquiry_mode see bluetooth_defines.h 9641 */ 9642 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9643 hci_stack->inquiry_mode = inquiry_mode; 9644 } 9645 9646 /** 9647 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9648 */ 9649 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9650 hci_stack->sco_voice_setting = voice_setting; 9651 } 9652 9653 /** 9654 * @brief Get SCO Voice Setting 9655 * @return current voice setting 9656 */ 9657 uint16_t hci_get_sco_voice_setting(void){ 9658 return hci_stack->sco_voice_setting; 9659 } 9660 9661 static int hci_have_usb_transport(void){ 9662 if (!hci_stack->hci_transport) return 0; 9663 const char * transport_name = hci_stack->hci_transport->name; 9664 if (!transport_name) return 0; 9665 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9666 } 9667 9668 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9669 uint16_t sco_packet_length = 0; 9670 9671 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9672 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as many bytes 9673 int multiplier; 9674 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9675 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9676 multiplier = 2; 9677 } else { 9678 multiplier = 1; 9679 } 9680 #endif 9681 9682 #ifdef ENABLE_SCO_OVER_HCI 9683 if (hci_have_usb_transport()){ 9684 // see Core Spec for H2 USB Transfer. 9685 // 3 byte SCO header + 24 bytes per connection 9686 // @note multiple sco connections not supported currently 9687 sco_packet_length = 3 + 24 * multiplier; 9688 } else { 9689 // 3 byte SCO header + SCO packet length over the air 9690 sco_packet_length = 3 + payload_size * multiplier; 9691 // assert that it still fits inside an SCO buffer 9692 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9693 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9694 } 9695 } 9696 #endif 9697 #ifdef HAVE_SCO_TRANSPORT 9698 // 3 byte SCO header + SCO packet length over the air 9699 sco_packet_length = 3 + payload_size * multiplier; 9700 // assert that it still fits inside an SCO buffer 9701 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9702 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9703 } 9704 #endif 9705 return sco_packet_length; 9706 } 9707 9708 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9709 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9710 if (connection != NULL){ 9711 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9712 } 9713 return 0; 9714 } 9715 9716 uint16_t hci_get_sco_packet_length(void){ 9717 btstack_linked_list_iterator_t it; 9718 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9719 while (btstack_linked_list_iterator_has_next(&it)){ 9720 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9721 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9722 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9723 } 9724 } 9725 return 0; 9726 } 9727 9728 /** 9729 * @brief Sets the master/slave policy 9730 * @param policy (0: attempt to become master, 1: let connecting device decide) 9731 */ 9732 void hci_set_master_slave_policy(uint8_t policy){ 9733 hci_stack->master_slave_policy = policy; 9734 } 9735 9736 #endif 9737 9738 HCI_STATE hci_get_state(void){ 9739 return hci_stack->state; 9740 } 9741 9742 #ifdef ENABLE_CLASSIC 9743 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9744 hci_stack->gap_classic_accept_callback = accept_callback; 9745 } 9746 #endif 9747 9748 /** 9749 * @brief Set callback for Bluetooth Hardware Error 9750 */ 9751 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9752 hci_stack->hardware_error_callback = fn; 9753 } 9754 9755 void hci_disconnect_all(void){ 9756 btstack_linked_list_iterator_t it; 9757 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9758 while (btstack_linked_list_iterator_has_next(&it)){ 9759 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9760 if (con->state == SENT_DISCONNECT) continue; 9761 con->state = SEND_DISCONNECT; 9762 } 9763 hci_run(); 9764 } 9765 9766 uint16_t hci_get_manufacturer(void){ 9767 return hci_stack->manufacturer; 9768 } 9769 9770 #ifdef ENABLE_BLE 9771 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9772 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9773 if (!hci_con) return NULL; 9774 return &hci_con->sm_connection; 9775 } 9776 9777 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9778 // without sm.c default values from create_connection_for_bd_addr_and_type() result in non-encrypted, not-authenticated 9779 #endif 9780 9781 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9782 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9783 if (hci_connection == NULL) return 0; 9784 if (hci_is_le_connection(hci_connection)){ 9785 #ifdef ENABLE_BLE 9786 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9787 if (sm_conn->sm_connection_encrypted != 0u) { 9788 return sm_conn->sm_actual_encryption_key_size; 9789 } 9790 #endif 9791 } else { 9792 #ifdef ENABLE_CLASSIC 9793 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9794 return hci_connection->encryption_key_size; 9795 } 9796 #endif 9797 } 9798 return 0; 9799 } 9800 9801 bool gap_authenticated(hci_con_handle_t con_handle){ 9802 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9803 if (hci_connection == NULL) return false; 9804 9805 switch (hci_connection->address_type){ 9806 #ifdef ENABLE_BLE 9807 case BD_ADDR_TYPE_LE_PUBLIC: 9808 case BD_ADDR_TYPE_LE_RANDOM: 9809 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9810 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9811 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9812 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9813 #endif 9814 #ifdef ENABLE_CLASSIC 9815 case BD_ADDR_TYPE_SCO: 9816 case BD_ADDR_TYPE_ACL: 9817 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9818 #endif 9819 default: 9820 return false; 9821 } 9822 } 9823 9824 bool gap_secure_connection(hci_con_handle_t con_handle){ 9825 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9826 if (hci_connection == NULL) return 0; 9827 9828 switch (hci_connection->address_type){ 9829 #ifdef ENABLE_BLE 9830 case BD_ADDR_TYPE_LE_PUBLIC: 9831 case BD_ADDR_TYPE_LE_RANDOM: 9832 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9833 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9834 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9835 return hci_connection->sm_connection.sm_connection_sc; 9836 #endif 9837 #ifdef ENABLE_CLASSIC 9838 case BD_ADDR_TYPE_SCO: 9839 case BD_ADDR_TYPE_ACL: 9840 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9841 #endif 9842 default: 9843 return false; 9844 } 9845 } 9846 9847 bool gap_bonded(hci_con_handle_t con_handle){ 9848 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9849 if (hci_connection == NULL) return 0; 9850 9851 #ifdef ENABLE_CLASSIC 9852 link_key_t link_key; 9853 link_key_type_t link_key_type; 9854 #endif 9855 switch (hci_connection->address_type){ 9856 #ifdef ENABLE_BLE 9857 case BD_ADDR_TYPE_LE_PUBLIC: 9858 case BD_ADDR_TYPE_LE_RANDOM: 9859 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9860 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9861 return hci_connection->sm_connection.sm_le_db_index >= 0; 9862 #endif 9863 #ifdef ENABLE_CLASSIC 9864 case BD_ADDR_TYPE_SCO: 9865 case BD_ADDR_TYPE_ACL: 9866 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9867 #endif 9868 default: 9869 return false; 9870 } 9871 } 9872 9873 #ifdef ENABLE_BLE 9874 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9875 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9876 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9877 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9878 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticated connection cannot be authorized 9879 return sm_conn->sm_connection_authorization_state; 9880 } 9881 #endif 9882 9883 #ifdef ENABLE_CLASSIC 9884 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){ 9885 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9886 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9887 conn->sniff_min_interval = sniff_min_interval; 9888 conn->sniff_max_interval = sniff_max_interval; 9889 conn->sniff_attempt = sniff_attempt; 9890 conn->sniff_timeout = sniff_timeout; 9891 hci_run(); 9892 return 0; 9893 } 9894 9895 /** 9896 * @brief Exit Sniff mode 9897 * @param con_handle 9898 @ @return 0 if ok 9899 */ 9900 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9901 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9902 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9903 conn->sniff_min_interval = 0xffff; 9904 hci_run(); 9905 return 0; 9906 } 9907 9908 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){ 9909 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9910 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9911 conn->sniff_subrating_max_latency = max_latency; 9912 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9913 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9914 hci_run(); 9915 return ERROR_CODE_SUCCESS; 9916 } 9917 9918 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){ 9919 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9920 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9921 conn->qos_service_type = service_type; 9922 conn->qos_token_rate = token_rate; 9923 conn->qos_peak_bandwidth = peak_bandwidth; 9924 conn->qos_latency = latency; 9925 conn->qos_delay_variation = delay_variation; 9926 hci_run(); 9927 return ERROR_CODE_SUCCESS; 9928 } 9929 9930 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9931 hci_stack->new_page_scan_interval = page_scan_interval; 9932 hci_stack->new_page_scan_window = page_scan_window; 9933 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9934 hci_run(); 9935 } 9936 9937 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9938 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9939 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9940 hci_run(); 9941 } 9942 9943 void gap_set_page_timeout(uint16_t page_timeout){ 9944 hci_stack->page_timeout = page_timeout; 9945 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9946 hci_run(); 9947 } 9948 9949 #endif 9950 9951 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9952 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9953 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9954 if (le_device_db_index >= le_device_db_max_count()) return; 9955 uint8_t offset = le_device_db_index >> 3; 9956 uint8_t mask = 1 << (le_device_db_index & 7); 9957 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9958 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9959 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9960 // note: go back to remove entries, otherwise, a remove + add will skip the add 9961 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9962 } 9963 } 9964 9965 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9966 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9967 if (le_device_db_index >= le_device_db_max_count()) return; 9968 uint8_t offset = le_device_db_index >> 3; 9969 uint8_t mask = 1 << (le_device_db_index & 7); 9970 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9971 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9972 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9973 } 9974 } 9975 9976 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9977 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9978 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9979 } 9980 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9981 // restart le resolving list update 9982 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9983 } 9984 return ERROR_CODE_SUCCESS; 9985 } 9986 9987 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9988 hci_stack->le_privacy_mode = privacy_mode; 9989 } 9990 #endif 9991 9992 #ifdef ENABLE_BLE 9993 #ifdef ENABLE_LE_CENTRAL 9994 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9995 9996 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9997 9998 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9999 // incorrect configuration: 10000 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 10001 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 10002 btstack_assert(false); 10003 #endif 10004 10005 // check if already in list 10006 btstack_linked_list_iterator_t it; 10007 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10008 while (btstack_linked_list_iterator_has_next(&it)) { 10009 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 10010 if (entry->sid != advertising_sid) { 10011 continue; 10012 } 10013 if (entry->address_type != address_type) { 10014 continue; 10015 } 10016 if (memcmp(entry->address, address, 6) != 0) { 10017 continue; 10018 } 10019 // disallow if already scheduled to add 10020 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 10021 return ERROR_CODE_COMMAND_DISALLOWED; 10022 } 10023 // still on controller, but scheduled to remove -> re-add 10024 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 10025 return ERROR_CODE_SUCCESS; 10026 } 10027 // alloc and add to list 10028 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 10029 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 10030 entry->sid = advertising_sid; 10031 entry->address_type = address_type; 10032 (void)memcpy(entry->address, address, 6); 10033 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 10034 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 10035 return ERROR_CODE_SUCCESS; 10036 } 10037 10038 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10039 btstack_linked_list_iterator_t it; 10040 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10041 while (btstack_linked_list_iterator_has_next(&it)){ 10042 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10043 if (entry->sid != advertising_sid) { 10044 continue; 10045 } 10046 if (entry->address_type != address_type) { 10047 continue; 10048 } 10049 if (memcmp(entry->address, address, 6) != 0) { 10050 continue; 10051 } 10052 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10053 // remove from controller if already present 10054 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10055 } else { 10056 // directly remove entry from whitelist 10057 btstack_linked_list_iterator_remove(&it); 10058 btstack_memory_periodic_advertiser_list_entry_free(entry); 10059 } 10060 return ERROR_CODE_SUCCESS; 10061 } 10062 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10063 } 10064 10065 static void hci_periodic_advertiser_list_clear(void){ 10066 btstack_linked_list_iterator_t it; 10067 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10068 while (btstack_linked_list_iterator_has_next(&it)){ 10069 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10070 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10071 // remove from controller if already present 10072 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10073 continue; 10074 } 10075 // directly remove entry from whitelist 10076 btstack_linked_list_iterator_remove(&it); 10077 btstack_memory_periodic_advertiser_list_entry_free(entry); 10078 } 10079 } 10080 10081 uint8_t gap_periodic_advertiser_list_clear(void){ 10082 hci_periodic_advertiser_list_clear(); 10083 hci_run(); 10084 return ERROR_CODE_SUCCESS; 10085 } 10086 10087 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10088 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 10089 if (status){ 10090 return status; 10091 } 10092 hci_run(); 10093 return ERROR_CODE_SUCCESS; 10094 } 10095 10096 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10097 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 10098 if (status){ 10099 return status; 10100 } 10101 hci_run(); 10102 return ERROR_CODE_SUCCESS; 10103 } 10104 10105 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 10106 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 10107 // abort if already active 10108 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 10109 return ERROR_CODE_COMMAND_DISALLOWED; 10110 } 10111 // store request 10112 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 10113 hci_stack->le_periodic_sync_options = options; 10114 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 10115 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 10116 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 10117 hci_stack->le_periodic_sync_skip = skip; 10118 hci_stack->le_periodic_sync_timeout = sync_timeout; 10119 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 10120 10121 hci_run(); 10122 return ERROR_CODE_SUCCESS; 10123 } 10124 10125 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 10126 // abort if not requested 10127 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 10128 return ERROR_CODE_COMMAND_DISALLOWED; 10129 } 10130 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 10131 hci_run(); 10132 return ERROR_CODE_SUCCESS; 10133 } 10134 10135 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10136 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10137 return ERROR_CODE_COMMAND_DISALLOWED; 10138 } 10139 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10140 hci_run(); 10141 return ERROR_CODE_SUCCESS; 10142 } 10143 10144 #endif 10145 #endif 10146 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10147 static hci_iso_stream_t * 10148 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10149 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10150 if (iso_stream != NULL){ 10151 iso_stream->iso_type = iso_type; 10152 iso_stream->state = state; 10153 iso_stream->group_id = group_id; 10154 iso_stream->stream_id = stream_id; 10155 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10156 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10157 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10158 } 10159 return iso_stream; 10160 } 10161 10162 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10163 btstack_linked_list_iterator_t it; 10164 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10165 while (btstack_linked_list_iterator_has_next(&it)){ 10166 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10167 if (iso_stream->cis_handle == con_handle ) { 10168 return iso_stream; 10169 } 10170 } 10171 return NULL; 10172 } 10173 10174 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10175 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10176 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10177 btstack_memory_hci_iso_stream_free(iso_stream); 10178 } 10179 10180 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10181 btstack_linked_list_iterator_t it; 10182 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10183 while (btstack_linked_list_iterator_has_next(&it)){ 10184 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10185 if ((iso_stream->group_id == group_id) && 10186 (iso_stream->iso_type == iso_type)){ 10187 btstack_linked_list_iterator_remove(&it); 10188 btstack_memory_hci_iso_stream_free(iso_stream); 10189 } 10190 } 10191 } 10192 10193 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10194 btstack_linked_list_iterator_t it; 10195 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10196 while (btstack_linked_list_iterator_has_next(&it)){ 10197 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10198 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10199 (iso_stream->group_id == group_id)){ 10200 btstack_linked_list_iterator_remove(&it); 10201 btstack_memory_hci_iso_stream_free(iso_stream); 10202 } 10203 } 10204 } 10205 10206 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10207 UNUSED(big_handle); 10208 10209 btstack_linked_list_iterator_t it; 10210 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10211 while (btstack_linked_list_iterator_has_next(&it)){ 10212 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10213 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10214 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10215 } 10216 } 10217 } 10218 10219 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10220 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10221 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10222 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10223 return (sdu_len_offset + 2 + sdu_len) == size; 10224 } 10225 10226 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10227 if (iso_stream == NULL){ 10228 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10229 return; 10230 } 10231 10232 if (hci_stack->iso_packet_handler == NULL) { 10233 return; 10234 } 10235 10236 // parse header 10237 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10238 uint16_t data_total_length = little_endian_read_16(packet, 2); 10239 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10240 10241 // assert packet is complete 10242 if ((data_total_length + 4u) != size){ 10243 return; 10244 } 10245 10246 if ((pb_flag & 0x01) == 0){ 10247 if (pb_flag == 0x02){ 10248 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10249 if (hci_iso_sdu_complete(packet, size)) { 10250 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10251 } 10252 } else { 10253 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10254 if (size > sizeof(iso_stream->reassembly_buffer)){ 10255 return; 10256 } 10257 memcpy(iso_stream->reassembly_buffer, packet, size); 10258 // fix pb_flag 10259 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10260 iso_stream->reassembly_pos = size; 10261 } 10262 } else { 10263 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10264 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10265 if (ts_flag != 0){ 10266 return; 10267 } 10268 // append fragment 10269 if (iso_stream->reassembly_pos == 0){ 10270 return; 10271 } 10272 10273 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10274 // reset reassembly buffer 10275 iso_stream->reassembly_pos = 0; 10276 return; 10277 } 10278 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10279 iso_stream->reassembly_pos += data_total_length; 10280 10281 // deliver if last fragment and SDU complete 10282 if (pb_flag == 0x03){ 10283 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10284 // fix data_total_length 10285 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10286 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10287 } 10288 // reset reassembly buffer 10289 iso_stream->reassembly_pos = 0; 10290 } 10291 } 10292 } 10293 10294 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10295 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10296 uint16_t pos = 0; 10297 event[pos++] = HCI_EVENT_META_GAP; 10298 event[pos++] = 4 + (2 * big->num_bis); 10299 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10300 event[pos++] = status; 10301 event[pos++] = big->big_handle; 10302 event[pos++] = big->num_bis; 10303 uint8_t i; 10304 for (i=0;i<big->num_bis;i++){ 10305 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10306 pos += 2; 10307 } 10308 hci_emit_btstack_event(event, pos, 0); 10309 } 10310 10311 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10312 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10313 uint16_t pos = 0; 10314 event[pos++] = HCI_EVENT_META_GAP; 10315 event[pos++] = 4 + (2 * cig->num_cis); 10316 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10317 event[pos++] = status; 10318 event[pos++] = cig->cig_id; 10319 event[pos++] = cig->num_cis; 10320 uint8_t i; 10321 for (i=0;i<cig->num_cis;i++){ 10322 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10323 pos += 2; 10324 } 10325 hci_emit_btstack_event(event, pos, 0); 10326 } 10327 10328 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10329 uint16_t pos = 0; 10330 event[pos++] = HCI_EVENT_META_GAP; 10331 event[pos++] = 8; 10332 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10333 event[pos++] = status; 10334 event[pos++] = iso_stream->group_id; 10335 event[pos++] = iso_stream->stream_id; 10336 little_endian_store_16(event, pos, iso_stream->cis_handle); 10337 pos += 2; 10338 little_endian_store_16(event, pos, iso_stream->acl_handle); 10339 pos += 2; 10340 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10341 pos += 2; 10342 event[pos++] = iso_stream->number_of_subevents; 10343 event[pos++] = iso_stream->burst_number_c_to_p; 10344 event[pos++] = iso_stream->burst_number_p_to_c; 10345 event[pos++] = iso_stream->flush_timeout_c_to_p; 10346 event[pos++] = iso_stream->flush_timeout_p_to_c; 10347 return pos; 10348 } 10349 10350 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10351 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10352 // cache data before finalizing struct 10353 uint8_t event [17]; 10354 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10355 btstack_assert(pos <= sizeof(event)); 10356 if (status != ERROR_CODE_SUCCESS){ 10357 hci_iso_stream_finalize(iso_stream); 10358 } 10359 hci_emit_btstack_event(event, pos, 0); 10360 } 10361 10362 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10363 uint8_t event [4]; 10364 uint16_t pos = 0; 10365 event[pos++] = HCI_EVENT_META_GAP; 10366 event[pos++] = 2; 10367 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10368 event[pos++] = big->big_handle; 10369 hci_emit_btstack_event(event, pos, 0); 10370 } 10371 10372 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10373 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10374 uint16_t pos = 0; 10375 event[pos++] = HCI_EVENT_META_GAP; 10376 event[pos++] = 4; 10377 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10378 event[pos++] = status; 10379 event[pos++] = big_sync->big_handle; 10380 event[pos++] = big_sync->num_bis; 10381 uint8_t i; 10382 for (i=0;i<big_sync->num_bis;i++){ 10383 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10384 pos += 2; 10385 } 10386 hci_emit_btstack_event(event, pos, 0); 10387 } 10388 10389 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10390 uint8_t event [4]; 10391 uint16_t pos = 0; 10392 event[pos++] = HCI_EVENT_META_GAP; 10393 event[pos++] = 2; 10394 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10395 event[pos++] = big_handle; 10396 hci_emit_btstack_event(event, pos, 0); 10397 } 10398 10399 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10400 uint8_t event[6]; 10401 uint16_t pos = 0; 10402 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10403 event[pos++] = sizeof(event) - 2; 10404 event[pos++] = big->big_handle; 10405 event[pos++] = bis_index; 10406 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10407 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10408 } 10409 10410 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10411 uint8_t event[4]; 10412 uint16_t pos = 0; 10413 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10414 event[pos++] = sizeof(event) - 2; 10415 little_endian_store_16(event, pos, cis_con_handle); 10416 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10417 } 10418 10419 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10420 btstack_linked_list_iterator_t it; 10421 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10422 while (btstack_linked_list_iterator_has_next(&it)){ 10423 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10424 if ( big->big_handle == big_handle ) { 10425 return big; 10426 } 10427 } 10428 return NULL; 10429 } 10430 10431 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10432 btstack_linked_list_iterator_t it; 10433 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10434 while (btstack_linked_list_iterator_has_next(&it)){ 10435 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10436 if ( big_sync->big_handle == big_handle ) { 10437 return big_sync; 10438 } 10439 } 10440 return NULL; 10441 } 10442 10443 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10444 hci_stack->iso_packets_to_queue = num_packets; 10445 } 10446 10447 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10448 btstack_linked_list_iterator_t it; 10449 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10450 while (btstack_linked_list_iterator_has_next(&it)){ 10451 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10452 if ( cig->cig_id == cig_id ) { 10453 return cig; 10454 } 10455 } 10456 return NULL; 10457 } 10458 10459 static void hci_iso_notify_can_send_now(void){ 10460 10461 // BIG 10462 10463 btstack_linked_list_iterator_t it; 10464 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10465 while (btstack_linked_list_iterator_has_next(&it)){ 10466 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10467 // track number completed packet timestamps 10468 if (big->num_completed_timestamp_current_valid){ 10469 big->num_completed_timestamp_current_valid = false; 10470 if (big->num_completed_timestamp_previous_valid){ 10471 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10472 int32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10473 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10474 big->num_completed_timestamp_previous_ms); 10475 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10476 // to catch up, skip packet on all BIS 10477 uint8_t i; 10478 for (i=0;i<big->num_bis;i++){ 10479 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10480 if (iso_stream){ 10481 iso_stream->num_packets_to_skip++; 10482 } 10483 } 10484 } 10485 } 10486 big->num_completed_timestamp_previous_valid = true; 10487 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10488 } 10489 10490 if (big->can_send_now_requested){ 10491 // check if no outgoing iso packets pending and no can send now have to be emitted 10492 uint8_t i; 10493 bool can_send = true; 10494 uint8_t num_iso_queued_minimum = 0; 10495 for (i=0;i<big->num_bis;i++){ 10496 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10497 if (iso_stream == NULL) continue; 10498 // handle case where individual ISO packet was sent too late: 10499 // for each additionally queued packet, a new one needs to get skipped 10500 if (i==0){ 10501 num_iso_queued_minimum = iso_stream->num_packets_sent; 10502 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10503 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10504 iso_stream->num_packets_to_skip += num_packets_to_skip; 10505 iso_stream->num_packets_sent -= num_packets_to_skip; 10506 } 10507 // check if we can send now 10508 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10509 can_send = false; 10510 break; 10511 } 10512 } 10513 if (can_send){ 10514 // propagate can send now to individual streams 10515 big->can_send_now_requested = false; 10516 for (i=0;i<big->num_bis;i++){ 10517 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10518 iso_stream->emit_ready_to_send = true; 10519 } 10520 } 10521 } 10522 } 10523 10524 if (hci_stack->hci_packet_buffer_reserved) return; 10525 10526 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10527 while (btstack_linked_list_iterator_has_next(&it)){ 10528 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10529 // report bis ready 10530 uint8_t i; 10531 for (i=0;i<big->num_bis;i++){ 10532 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10533 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10534 iso_stream->emit_ready_to_send = false; 10535 hci_emit_bis_can_send_now(big, i); 10536 if (hci_stack->hci_packet_buffer_reserved) return; 10537 } 10538 } 10539 } 10540 10541 10542 // CIS 10543 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10544 while (btstack_linked_list_iterator_has_next(&it)) { 10545 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10546 if ((iso_stream->can_send_now_requested) && 10547 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10548 iso_stream->can_send_now_requested = false; 10549 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10550 if (hci_stack->hci_packet_buffer_reserved) return; 10551 } 10552 } 10553 } 10554 10555 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10556 // make big handle unique and usuable for big and big sync 10557 if (hci_big_for_handle(big_handle) != NULL){ 10558 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10559 } 10560 if (hci_big_sync_for_handle(big_handle) != NULL){ 10561 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10562 } 10563 if (num_bis == 0){ 10564 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10565 } 10566 if (num_bis > MAX_NR_BIS){ 10567 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10568 } 10569 10570 // reserve ISO Streams 10571 uint8_t i; 10572 uint8_t status = ERROR_CODE_SUCCESS; 10573 for (i=0;i<num_bis;i++){ 10574 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10575 if (iso_stream == NULL) { 10576 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10577 break; 10578 } 10579 } 10580 10581 // free structs on error 10582 if (status != ERROR_CODE_SUCCESS){ 10583 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10584 } 10585 10586 return status; 10587 } 10588 10589 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10590 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10591 if (status != ERROR_CODE_SUCCESS){ 10592 return status; 10593 } 10594 10595 le_audio_big_t * big = storage; 10596 big->big_handle = big_params->big_handle; 10597 big->params = big_params; 10598 big->state = LE_AUDIO_BIG_STATE_CREATE; 10599 big->num_bis = big_params->num_bis; 10600 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10601 10602 hci_run(); 10603 10604 return ERROR_CODE_SUCCESS; 10605 } 10606 10607 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10608 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10609 if (status != ERROR_CODE_SUCCESS){ 10610 return status; 10611 } 10612 10613 le_audio_big_sync_t * big_sync = storage; 10614 big_sync->big_handle = big_sync_params->big_handle; 10615 big_sync->params = big_sync_params; 10616 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10617 big_sync->num_bis = big_sync_params->num_bis; 10618 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10619 10620 hci_run(); 10621 10622 return ERROR_CODE_SUCCESS; 10623 } 10624 10625 uint8_t gap_big_terminate(uint8_t big_handle){ 10626 le_audio_big_t * big = hci_big_for_handle(big_handle); 10627 if (big == NULL){ 10628 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10629 } 10630 switch (big->state){ 10631 case LE_AUDIO_BIG_STATE_CREATE: 10632 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10633 hci_emit_big_terminated(big); 10634 break; 10635 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10636 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10637 break; 10638 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10639 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10640 case LE_AUDIO_BIG_STATE_ACTIVE: 10641 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10642 hci_run(); 10643 break; 10644 default: 10645 return ERROR_CODE_COMMAND_DISALLOWED; 10646 } 10647 return ERROR_CODE_SUCCESS; 10648 } 10649 10650 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10651 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10652 if (big_sync == NULL){ 10653 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10654 } 10655 switch (big_sync->state){ 10656 case LE_AUDIO_BIG_STATE_CREATE: 10657 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10658 hci_emit_big_sync_stopped(big_handle); 10659 break; 10660 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10661 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10662 break; 10663 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10664 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10665 case LE_AUDIO_BIG_STATE_ACTIVE: 10666 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10667 hci_run(); 10668 break; 10669 default: 10670 return ERROR_CODE_COMMAND_DISALLOWED; 10671 } 10672 return ERROR_CODE_SUCCESS; 10673 } 10674 10675 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10676 le_audio_big_t * big = hci_big_for_handle(big_handle); 10677 if (big == NULL){ 10678 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10679 } 10680 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10681 return ERROR_CODE_COMMAND_DISALLOWED; 10682 } 10683 big->can_send_now_requested = true; 10684 hci_iso_notify_can_send_now(); 10685 return ERROR_CODE_SUCCESS; 10686 } 10687 10688 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10689 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10690 if (iso_stream == NULL){ 10691 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10692 } 10693 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10694 return ERROR_CODE_COMMAND_DISALLOWED; 10695 } 10696 iso_stream->can_send_now_requested = true; 10697 hci_iso_notify_can_send_now(); 10698 return ERROR_CODE_SUCCESS; 10699 } 10700 10701 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10702 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10703 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10704 } 10705 if (cig_params->num_cis == 0){ 10706 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10707 } 10708 if (cig_params->num_cis > MAX_NR_CIS){ 10709 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10710 } 10711 10712 // reserve ISO Streams 10713 uint8_t i; 10714 uint8_t status = ERROR_CODE_SUCCESS; 10715 for (i=0;i<cig_params->num_cis;i++){ 10716 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10717 if (iso_stream == NULL) { 10718 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10719 break; 10720 } 10721 } 10722 10723 // free structs on error 10724 if (status != ERROR_CODE_SUCCESS){ 10725 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10726 return status; 10727 } 10728 10729 le_audio_cig_t * cig = storage; 10730 cig->cig_id = cig_params->cig_id; 10731 cig->num_cis = cig_params->num_cis; 10732 cig->params = cig_params; 10733 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10734 for (i=0;i<cig->num_cis;i++){ 10735 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10736 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10737 cig->cis_setup_active[i] = false; 10738 cig->cis_established[i] = false; 10739 } 10740 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10741 10742 hci_run(); 10743 10744 return ERROR_CODE_SUCCESS; 10745 } 10746 10747 uint8_t gap_cig_remove(uint8_t cig_id){ 10748 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10749 if (cig == NULL){ 10750 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10751 } 10752 10753 // close active CIS 10754 uint8_t i; 10755 for (i=0;i<cig->num_cis;i++){ 10756 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10757 if (stream != NULL){ 10758 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10759 } 10760 } 10761 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10762 10763 hci_run(); 10764 10765 return ERROR_CODE_SUCCESS; 10766 } 10767 10768 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10769 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10770 if (cig == NULL){ 10771 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10772 } 10773 10774 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10775 return ERROR_CODE_COMMAND_DISALLOWED; 10776 } 10777 10778 // store ACL Connection Handles 10779 uint8_t i; 10780 for (i=0;i<cig->num_cis;i++){ 10781 // check that all con handles exist and store 10782 hci_con_handle_t cis_handle = cis_con_handles[i]; 10783 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10784 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10785 } 10786 uint8_t j; 10787 bool found = false; 10788 for (j=0;j<cig->num_cis;j++){ 10789 if (cig->cis_con_handles[j] == cis_handle){ 10790 cig->acl_con_handles[j] = acl_con_handles[j]; 10791 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10792 btstack_assert(iso_stream != NULL); 10793 iso_stream->acl_handle = acl_con_handles[j]; 10794 found = true; 10795 break; 10796 } 10797 } 10798 if (!found){ 10799 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10800 } 10801 } 10802 10803 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10804 hci_run(); 10805 10806 return ERROR_CODE_SUCCESS; 10807 } 10808 10809 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10810 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10811 if (iso_stream == NULL){ 10812 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10813 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10814 } 10815 10816 // set next state and continue 10817 iso_stream->state = state; 10818 hci_run(); 10819 return ERROR_CODE_SUCCESS; 10820 } 10821 10822 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10823 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10824 } 10825 10826 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10827 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10828 } 10829 10830 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10831 10832 // GAP Privacy - notify clients before random address update 10833 10834 static bool gap_privacy_client_all_ready(void){ 10835 // check if all ready 10836 btstack_linked_list_iterator_t it; 10837 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10838 while (btstack_linked_list_iterator_has_next(&it)) { 10839 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10840 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10841 return false; 10842 } 10843 } 10844 return true; 10845 } 10846 10847 static void gap_privacy_clients_handle_ready(void){ 10848 // clear 'ready' 10849 btstack_linked_list_iterator_t it; 10850 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10851 while (btstack_linked_list_iterator_has_next(&it)) { 10852 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10853 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10854 } 10855 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10856 hci_run(); 10857 } 10858 10859 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10860 btstack_linked_list_iterator_t it; 10861 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10862 while (btstack_linked_list_iterator_has_next(&it)) { 10863 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10864 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10865 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10866 (*client->callback)(client, new_random_address); 10867 } 10868 } 10869 if (gap_privacy_client_all_ready()){ 10870 gap_privacy_clients_handle_ready(); 10871 } 10872 } 10873 10874 void gap_privacy_client_register(gap_privacy_client_t * client){ 10875 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10876 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10877 } 10878 10879 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10880 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10881 if (gap_privacy_client_all_ready()){ 10882 gap_privacy_clients_handle_ready(); 10883 } 10884 } 10885 10886 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10887 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10888 } 10889 10890 #endif /* ENABLE_BLE */ 10891 10892 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10893 void hci_setup_test_connections_fuzz(void){ 10894 hci_connection_t * conn; 10895 10896 // default address: 66:55:44:33:00:01 10897 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10898 10899 // setup Controller info 10900 hci_stack->num_cmd_packets = 255; 10901 hci_stack->acl_packets_total_num = 255; 10902 10903 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10904 addr[5] = 0x01; 10905 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10906 conn->con_handle = addr[5]; 10907 conn->state = RECEIVED_CONNECTION_REQUEST; 10908 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10909 10910 // setup incoming Classic SCO connection with con handle 0x0002 10911 addr[5] = 0x02; 10912 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10913 conn->con_handle = addr[5]; 10914 conn->state = RECEIVED_CONNECTION_REQUEST; 10915 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10916 10917 // setup ready Classic ACL connection with con handle 0x0003 10918 addr[5] = 0x03; 10919 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10920 conn->con_handle = addr[5]; 10921 conn->state = OPEN; 10922 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10923 10924 // setup ready Classic SCO connection with con handle 0x0004 10925 addr[5] = 0x04; 10926 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10927 conn->con_handle = addr[5]; 10928 conn->state = OPEN; 10929 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10930 10931 // setup ready LE ACL connection with con handle 0x005 and public address 10932 addr[5] = 0x05; 10933 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10934 conn->con_handle = addr[5]; 10935 conn->state = OPEN; 10936 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10937 conn->sm_connection.sm_connection_encrypted = 1; 10938 } 10939 10940 void hci_free_connections_fuzz(void){ 10941 btstack_linked_list_iterator_t it; 10942 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10943 while (btstack_linked_list_iterator_has_next(&it)){ 10944 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10945 btstack_linked_list_iterator_remove(&it); 10946 btstack_memory_hci_connection_free(con); 10947 } 10948 } 10949 void hci_simulate_working_fuzz(void){ 10950 hci_stack->le_scanning_param_update = false; 10951 hci_init_done(); 10952 hci_stack->num_cmd_packets = 255; 10953 } 10954 #endif 10955