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_LE_SET_HOST_FEATURE_V1 , 44, 1) \ 181 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 182 183 // enumerate supported commands 184 #define X(name, offset, bit) name, 185 enum { 186 SUPPORTED_HCI_COMMANDS 187 SUPPORTED_HCI_COMMANDS_COUNT 188 }; 189 #undef X 190 191 // prototypes 192 #ifdef ENABLE_CLASSIC 193 static void hci_update_scan_enable(void); 194 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 195 static int hci_local_ssp_activated(void); 196 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 197 static bool hci_ssp_supported(hci_connection_t * connection); 198 static void hci_notify_if_sco_can_send_now(void); 199 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 200 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 201 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 202 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 203 static void hci_connection_timestamp(hci_connection_t *connection); 204 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 205 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 206 #endif 207 208 static int hci_power_control_on(void); 209 static void hci_power_control_off(void); 210 static void hci_state_reset(void); 211 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 212 static void hci_emit_transport_packet_sent(void); 213 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 214 static void hci_emit_nr_connections_changed(void); 215 static void hci_emit_hci_open_failed(void); 216 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 217 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 218 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump); 219 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 220 static void hci_run(void); 221 static bool hci_is_le_connection(hci_connection_t * connection); 222 static uint8_t hci_send_prepared_cmd_packet(void); 223 224 #ifdef ENABLE_CLASSIC 225 static int hci_have_usb_transport(void); 226 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 227 #endif 228 229 #ifdef ENABLE_BLE 230 static bool hci_run_general_gap_le(void); 231 static void gap_privacy_clients_handle_ready(void); 232 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 233 #ifdef ENABLE_LE_CENTRAL 234 // called from test/ble_client/advertising_data_parser.c 235 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 236 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 237 static hci_connection_t * gap_get_outgoing_le_connection(void); 238 static void hci_le_scan_stop(void); 239 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 240 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size); 241 #endif 242 #endif 243 #ifdef ENABLE_LE_PERIPHERAL 244 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 245 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 246 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len); 247 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 248 #endif /* ENABLE_LE_PERIPHERAL */ 249 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 250 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); 251 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 252 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 253 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 254 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 255 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 256 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 257 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 258 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 259 static void hci_iso_notify_can_send_now(void); 260 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 261 static void hci_emit_big_terminated(const le_audio_big_t * big); 262 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 263 static void hci_emit_big_sync_stopped(uint8_t big_handle); 264 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 265 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 266 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 267 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 268 #endif /* ENABLE_BLE */ 269 270 // the STACK is here 271 #ifndef HAVE_MALLOC 272 static hci_stack_t hci_stack_static; 273 #endif 274 static hci_stack_t * hci_stack = NULL; 275 276 #ifdef ENABLE_CLASSIC 277 // default name 278 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 279 280 // test helper 281 static uint8_t disable_l2cap_timeouts = 0; 282 #endif 283 284 // reset connection state on create and on reconnect 285 // don't overwrite addr, con handle, role 286 static void hci_connection_init(hci_connection_t * conn){ 287 conn->authentication_flags = AUTH_FLAG_NONE; 288 conn->bonding_flags = 0; 289 conn->requested_security_level = LEVEL_0; 290 conn->link_key_type = INVALID_LINK_KEY; 291 #ifdef ENABLE_CLASSIC 292 conn->request_role = HCI_ROLE_INVALID; 293 conn->sniff_subrating_max_latency = 0xffff; 294 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 295 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 296 btstack_run_loop_set_timer_context(&conn->timeout, conn); 297 hci_connection_timestamp(conn); 298 #endif 299 conn->acl_recombination_length = 0; 300 conn->acl_recombination_pos = 0; 301 conn->num_packets_sent = 0; 302 303 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 304 #ifdef ENABLE_BLE 305 conn->le_phy_update_all_phys = 0xff; 306 #endif 307 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 308 conn->le_max_tx_octets = 27; 309 #endif 310 #ifdef ENABLE_CLASSIC_PAIRING_OOB 311 conn->classic_oob_c_192 = NULL; 312 conn->classic_oob_r_192 = NULL; 313 conn->classic_oob_c_256 = NULL; 314 conn->classic_oob_r_256 = NULL; 315 #endif 316 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 317 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 318 conn->le_past_advertising_handle = 0xff; 319 #endif 320 } 321 322 /** 323 * create connection for given address 324 * 325 * @return connection OR NULL, if no memory left 326 */ 327 static hci_connection_t * 328 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 329 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 330 331 hci_connection_t * conn = btstack_memory_hci_connection_get(); 332 if (!conn) return NULL; 333 hci_connection_init(conn); 334 335 bd_addr_copy(conn->address, addr); 336 conn->address_type = addr_type; 337 conn->con_handle = HCI_CON_HANDLE_INVALID; 338 conn->role = role; 339 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 340 341 return conn; 342 } 343 344 345 /** 346 * get le connection parameter range 347 * 348 * @return le connection parameter range struct 349 */ 350 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 351 *range = hci_stack->le_connection_parameter_range; 352 } 353 354 /** 355 * set le connection parameter range 356 * 357 */ 358 359 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 360 hci_stack->le_connection_parameter_range = *range; 361 } 362 363 /** 364 * @brief Test if connection parameters are inside in existing rage 365 * @param conn_interval_min (unit: 1.25ms) 366 * @param conn_interval_max (unit: 1.25ms) 367 * @param conn_latency 368 * @param supervision_timeout (unit: 10ms) 369 * @return 1 if included 370 */ 371 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){ 372 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 373 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 374 375 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 376 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 377 378 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 379 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 380 381 return 1; 382 } 383 384 /** 385 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 386 * @note: default: 1 387 * @param max_peripheral_connections 388 */ 389 #ifdef ENABLE_LE_PERIPHERAL 390 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 391 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 392 } 393 #endif 394 395 /** 396 * get hci connections iterator 397 * 398 * @return hci connections iterator 399 */ 400 401 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 402 btstack_linked_list_iterator_init(it, &hci_stack->connections); 403 } 404 405 /** 406 * get connection for a given handle 407 * 408 * @return connection OR NULL, if not found 409 */ 410 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 411 btstack_linked_list_iterator_t it; 412 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 413 while (btstack_linked_list_iterator_has_next(&it)){ 414 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 415 if ( item->con_handle == con_handle ) { 416 return item; 417 } 418 } 419 return NULL; 420 } 421 422 /** 423 * get connection for given address 424 * 425 * @return connection OR NULL, if not found 426 */ 427 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 428 btstack_linked_list_iterator_t it; 429 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 430 while (btstack_linked_list_iterator_has_next(&it)){ 431 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 432 if (connection->address_type != addr_type) continue; 433 if (memcmp(addr, connection->address, 6) != 0) continue; 434 return connection; 435 } 436 return NULL; 437 } 438 439 #ifdef ENABLE_CLASSIC 440 441 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 442 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 443 } 444 445 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 446 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 447 } 448 449 #ifdef ENABLE_SCO_OVER_HCI 450 static int hci_number_sco_connections(void){ 451 int connections = 0; 452 btstack_linked_list_iterator_t it; 453 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 454 while (btstack_linked_list_iterator_has_next(&it)){ 455 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 456 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 457 connections++; 458 } 459 return connections; 460 } 461 #endif 462 463 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 464 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 465 #ifdef HAVE_EMBEDDED_TICK 466 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 467 // connections might be timed out 468 hci_emit_l2cap_check_timeout(connection); 469 } 470 #else 471 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 472 // connections might be timed out 473 hci_emit_l2cap_check_timeout(connection); 474 } 475 #endif 476 } 477 478 static void hci_connection_timestamp(hci_connection_t *connection){ 479 #ifdef HAVE_EMBEDDED_TICK 480 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 481 #else 482 connection->timestamp = btstack_run_loop_get_time_ms(); 483 #endif 484 } 485 486 /** 487 * add authentication flags and reset timer 488 * @note: assumes classic connection 489 * @note: bd_addr is passed in as little endian uint8_t * as it is called from parsing packets 490 */ 491 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 492 bd_addr_t addr; 493 reverse_bd_addr(bd_addr, addr); 494 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 495 if (conn) { 496 connectionSetAuthenticationFlags(conn, flags); 497 hci_connection_timestamp(conn); 498 } 499 } 500 501 static bool hci_pairing_active(hci_connection_t * hci_connection){ 502 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 503 } 504 505 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 506 if (hci_pairing_active(hci_connection)) return; 507 if (ssp){ 508 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 509 } else { 510 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 511 } 512 // if we are initiator, we have sent an HCI Authenticate Request 513 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 514 515 // if we are responder, use minimal service security level as required level 516 if (!initiator){ 517 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); 518 } 519 520 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 521 522 uint8_t event[12]; 523 event[0] = GAP_EVENT_PAIRING_STARTED; 524 event[1] = 10; 525 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 526 reverse_bd_addr(hci_connection->address, &event[4]); 527 event[10] = (uint8_t) ssp; 528 event[11] = (uint8_t) initiator; 529 hci_emit_btstack_event(event, sizeof(event), 1); 530 } 531 532 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 533 hci_connection->requested_security_level = LEVEL_0; 534 if (!hci_pairing_active(hci_connection)) return; 535 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 536 #ifdef ENABLE_CLASSIC_PAIRING_OOB 537 hci_connection->classic_oob_c_192 = NULL; 538 hci_connection->classic_oob_r_192 = NULL; 539 hci_connection->classic_oob_c_256 = NULL; 540 hci_connection->classic_oob_r_256 = NULL; 541 #endif 542 log_info("pairing complete, status %02x", status); 543 544 uint8_t event[11]; 545 event[0] = GAP_EVENT_PAIRING_COMPLETE; 546 event[1] = 9; 547 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 548 reverse_bd_addr(hci_connection->address, &event[4]); 549 event[10] = status; 550 hci_emit_btstack_event(event, sizeof(event), 1); 551 552 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 553 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 554 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 555 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 556 hci_connection->bonding_status = status; 557 } 558 } 559 560 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 561 hci_connection_t * conn = hci_connection_for_handle(handle); 562 if (!conn) return false; 563 return hci_pairing_active(conn); 564 } 565 566 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 567 if (!hci_stack->link_key_db) return; 568 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 569 hci_stack->link_key_db->delete_link_key(addr); 570 } 571 572 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 573 if (!hci_stack->link_key_db) return; 574 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 575 hci_stack->link_key_db->put_link_key(addr, link_key, type); 576 } 577 578 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 579 if (!hci_stack->link_key_db) return false; 580 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 581 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 582 return result; 583 } 584 585 void gap_delete_all_link_keys(void){ 586 bd_addr_t addr; 587 link_key_t link_key; 588 link_key_type_t type; 589 btstack_link_key_iterator_t it; 590 int ok = gap_link_key_iterator_init(&it); 591 if (!ok) { 592 log_error("could not initialize iterator"); 593 return; 594 } 595 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 596 gap_drop_link_key_for_bd_addr(addr); 597 } 598 gap_link_key_iterator_done(&it); 599 } 600 601 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 602 if (!hci_stack->link_key_db) return 0; 603 if (!hci_stack->link_key_db->iterator_init) return 0; 604 return hci_stack->link_key_db->iterator_init(it); 605 } 606 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){ 607 if (!hci_stack->link_key_db) return 0; 608 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 609 } 610 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 611 if (!hci_stack->link_key_db) return; 612 hci_stack->link_key_db->iterator_done(it); 613 } 614 #endif 615 616 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 617 switch (address_type){ 618 case BD_ADDR_TYPE_LE_PUBLIC: 619 case BD_ADDR_TYPE_LE_RANDOM: 620 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 621 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 622 return true; 623 default: 624 return false; 625 } 626 } 627 628 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 629 switch (address_type){ 630 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 631 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 632 return true; 633 default: 634 return false; 635 } 636 } 637 638 static bool hci_is_le_connection(hci_connection_t * connection){ 639 return hci_is_le_connection_type(connection->address_type); 640 } 641 642 /** 643 * count connections 644 */ 645 static int nr_hci_connections(void){ 646 int count = 0; 647 btstack_linked_item_t *it; 648 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 649 count++; 650 } 651 return count; 652 } 653 654 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 655 656 unsigned int num_packets_sent_classic = 0; 657 unsigned int num_packets_sent_le = 0; 658 659 btstack_linked_item_t *it; 660 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 661 hci_connection_t * connection = (hci_connection_t *) it; 662 if (hci_is_le_connection(connection)){ 663 num_packets_sent_le += connection->num_packets_sent; 664 } 665 if (connection->address_type == BD_ADDR_TYPE_ACL){ 666 num_packets_sent_classic += connection->num_packets_sent; 667 } 668 } 669 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 670 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 671 int free_slots_le = 0; 672 673 if (free_slots_classic < 0){ 674 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); 675 return 0; 676 } 677 678 if (hci_stack->le_acl_packets_total_num){ 679 // if we have LE slots, they are used 680 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 681 if (free_slots_le < 0){ 682 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); 683 return 0; 684 } 685 } else { 686 // otherwise, classic slots are used for LE, too 687 free_slots_classic -= num_packets_sent_le; 688 if (free_slots_classic < 0){ 689 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); 690 return 0; 691 } 692 } 693 694 switch (address_type){ 695 case BD_ADDR_TYPE_UNKNOWN: 696 log_error("hci_number_free_acl_slots: unknown address type"); 697 return 0; 698 699 case BD_ADDR_TYPE_ACL: 700 return (uint16_t) free_slots_classic; 701 702 default: 703 if (hci_stack->le_acl_packets_total_num > 0){ 704 return (uint16_t) free_slots_le; 705 } 706 return (uint16_t) free_slots_classic; 707 } 708 } 709 710 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 711 // get connection type 712 hci_connection_t * connection = hci_connection_for_handle(con_handle); 713 if (!connection){ 714 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 715 return 0; 716 } 717 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 718 } 719 720 #ifdef ENABLE_CLASSIC 721 static int hci_number_free_sco_slots(void){ 722 unsigned int num_sco_packets_sent = 0; 723 btstack_linked_item_t *it; 724 if (hci_stack->synchronous_flow_control_enabled){ 725 // explicit flow control 726 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 727 hci_connection_t * connection = (hci_connection_t *) it; 728 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 729 num_sco_packets_sent += connection->num_packets_sent; 730 } 731 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 732 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 733 return 0; 734 } 735 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 736 } else { 737 // implicit flow control 738 int num_ready = 0; 739 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 740 hci_connection_t * connection = (hci_connection_t *) it; 741 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 742 if (connection->sco_tx_ready == 0) continue; 743 num_ready++; 744 } 745 return num_ready; 746 } 747 } 748 #endif 749 750 // only used to send HCI Host Number Completed Packets 751 static int hci_can_send_command_packet_transport(void){ 752 if (hci_stack->hci_packet_buffer_reserved) return 0; 753 754 // check for async hci transport implementations 755 if (hci_stack->hci_transport->can_send_packet_now){ 756 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 757 return 0; 758 } 759 } 760 return 1; 761 } 762 763 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 764 bool hci_can_send_command_packet_now(void){ 765 if (hci_can_send_command_packet_transport() == 0) return false; 766 return hci_stack->num_cmd_packets > 0u; 767 } 768 769 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 770 // check for async hci transport implementations 771 if (!hci_stack->hci_transport->can_send_packet_now) return true; 772 return hci_stack->hci_transport->can_send_packet_now(packet_type); 773 } 774 775 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 776 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 777 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 778 } 779 780 bool hci_can_send_acl_le_packet_now(void){ 781 if (hci_stack->hci_packet_buffer_reserved) return false; 782 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 783 } 784 785 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 786 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 787 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 788 } 789 790 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 791 if (hci_stack->hci_packet_buffer_reserved) return false; 792 return hci_can_send_prepared_acl_packet_now(con_handle); 793 } 794 795 #ifdef ENABLE_CLASSIC 796 bool hci_can_send_acl_classic_packet_now(void){ 797 if (hci_stack->hci_packet_buffer_reserved) return false; 798 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 799 } 800 801 bool hci_can_send_prepared_sco_packet_now(void){ 802 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 803 if (hci_have_usb_transport()){ 804 return hci_stack->sco_can_send_now; 805 } else { 806 return hci_number_free_sco_slots() > 0; 807 } 808 } 809 810 bool hci_can_send_sco_packet_now(void){ 811 if (hci_stack->hci_packet_buffer_reserved) return false; 812 return hci_can_send_prepared_sco_packet_now(); 813 } 814 815 void hci_request_sco_can_send_now_event(void){ 816 hci_stack->sco_waiting_for_can_send_now = 1; 817 hci_notify_if_sco_can_send_now(); 818 } 819 #endif 820 821 // used for internal checks in l2cap.c 822 bool hci_is_packet_buffer_reserved(void){ 823 return hci_stack->hci_packet_buffer_reserved; 824 } 825 826 void hci_reserve_packet_buffer(void){ 827 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 828 hci_stack->hci_packet_buffer_reserved = true; 829 } 830 831 void hci_release_packet_buffer(void){ 832 btstack_assert(hci_stack->hci_packet_buffer_reserved); 833 hci_stack->hci_packet_buffer_reserved = false; 834 hci_emit_transport_packet_sent(); 835 } 836 837 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 838 static int hci_transport_synchronous(void){ 839 return hci_stack->hci_transport->can_send_packet_now == NULL; 840 } 841 842 // used for debugging 843 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 844 static void hci_controller_dump_packets(void){ 845 // format: "{handle:04x}:{count:02d} " 846 char summaries[3][7 * 8 + 1]; 847 uint16_t totals[3]; 848 uint8_t index; 849 for (index = 0 ; index < 3 ; index++){ 850 summaries[index][0] = 0; 851 totals[index] = 0; 852 } 853 btstack_linked_item_t *it; 854 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 855 hci_connection_t * connection = (hci_connection_t *) it; 856 switch (connection->address_type){ 857 case BD_ADDR_TYPE_ACL: 858 index = 0; 859 break; 860 case BD_ADDR_TYPE_SCO: 861 index = 2; 862 break; 863 default: 864 index = 1; 865 break; 866 } 867 totals[index] += connection->num_packets_sent; 868 char item_text[10]; 869 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 870 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 871 } 872 for (index = 0 ; index < 3 ; index++){ 873 if (summaries[index][0] == 0){ 874 summaries[index][0] = '-'; 875 summaries[index][1] = 0; 876 } 877 } 878 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]); 879 } 880 #endif 881 882 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 883 884 // 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); 885 886 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 887 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 888 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 889 max_acl_data_packet_length = hci_stack->le_data_packets_length; 890 } 891 892 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 893 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 894 max_acl_data_packet_length = connection->le_max_tx_octets; 895 } 896 #endif 897 898 log_debug("hci_send_acl_packet_fragments entered"); 899 900 uint8_t status = ERROR_CODE_SUCCESS; 901 // multiple packets could be sent on a synchronous HCI transport 902 while (true){ 903 904 log_debug("hci_send_acl_packet_fragments loop entered"); 905 906 // get current data 907 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 908 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 909 bool more_fragments = false; 910 911 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 912 if (current_acl_data_packet_length > max_acl_data_packet_length){ 913 more_fragments = true; 914 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 915 } 916 917 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragment) 918 if (acl_header_pos > 0u){ 919 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 920 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 921 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 922 } 923 924 // update header len 925 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 926 927 // count packet 928 connection->num_packets_sent++; 929 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 930 931 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 932 if (more_fragments){ 933 // update start of next fragment to send 934 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 935 } else { 936 // done 937 hci_stack->acl_fragmentation_pos = 0; 938 hci_stack->acl_fragmentation_total_size = 0; 939 } 940 941 // send packet 942 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 943 const int size = current_acl_data_packet_length + 4; 944 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 945 hci_stack->acl_fragmentation_tx_active = 1; 946 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 947 if (err != 0){ 948 // no error from HCI Transport expected 949 status = ERROR_CODE_HARDWARE_FAILURE; 950 break; 951 } 952 953 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 954 hci_controller_dump_packets(); 955 #endif 956 957 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 958 959 // done yet? 960 if (!more_fragments) break; 961 962 // can send more? 963 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 964 } 965 966 log_debug("hci_send_acl_packet_fragments loop over"); 967 968 // release buffer now for synchronous transport 969 if (hci_transport_synchronous()){ 970 hci_stack->acl_fragmentation_tx_active = 0; 971 hci_release_packet_buffer(); 972 } 973 974 return status; 975 } 976 977 // pre: caller has reserved the packet buffer 978 uint8_t hci_send_acl_packet_buffer(int size){ 979 btstack_assert(hci_stack->hci_packet_buffer_reserved); 980 981 uint8_t * packet = hci_stack->hci_packet_buffer; 982 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 983 984 hci_connection_t *connection = hci_connection_for_handle( con_handle); 985 if (!connection) { 986 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 987 hci_release_packet_buffer(); 988 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 989 } 990 991 // check for free places on Bluetooth module 992 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 993 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 994 hci_release_packet_buffer(); 995 return BTSTACK_ACL_BUFFERS_FULL; 996 } 997 998 #ifdef ENABLE_CLASSIC 999 hci_connection_timestamp(connection); 1000 #endif 1001 1002 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 1003 1004 // setup data 1005 hci_stack->acl_fragmentation_total_size = size; 1006 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1007 1008 return hci_send_acl_packet_fragments(connection); 1009 } 1010 1011 #ifdef ENABLE_CLASSIC 1012 // pre: caller has reserved the packet buffer 1013 uint8_t hci_send_sco_packet_buffer(int size){ 1014 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1015 1016 uint8_t * packet = hci_stack->hci_packet_buffer; 1017 1018 // skip checks in loopback mode 1019 if (!hci_stack->loopback_mode){ 1020 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1021 1022 // check for free places on Bluetooth module 1023 if (!hci_can_send_prepared_sco_packet_now()) { 1024 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1025 hci_release_packet_buffer(); 1026 return BTSTACK_ACL_BUFFERS_FULL; 1027 } 1028 1029 // track send packet in connection struct 1030 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1031 if (!connection) { 1032 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1033 hci_release_packet_buffer(); 1034 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1035 } 1036 1037 if (hci_have_usb_transport()){ 1038 // token used 1039 hci_stack->sco_can_send_now = false; 1040 } else { 1041 if (hci_stack->synchronous_flow_control_enabled){ 1042 connection->num_packets_sent++; 1043 } else { 1044 connection->sco_tx_ready--; 1045 } 1046 } 1047 } 1048 1049 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1050 1051 #ifdef HAVE_SCO_TRANSPORT 1052 hci_stack->sco_transport->send_packet(packet, size); 1053 hci_release_packet_buffer(); 1054 hci_emit_transport_packet_sent(); 1055 1056 return 0; 1057 #else 1058 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1059 uint8_t status; 1060 if (err == 0){ 1061 status = ERROR_CODE_SUCCESS; 1062 } else { 1063 status = ERROR_CODE_HARDWARE_FAILURE; 1064 } 1065 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 1066 hci_release_packet_buffer(); 1067 } 1068 return status; 1069 #endif 1070 } 1071 #endif 1072 1073 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1074 static uint8_t hci_send_iso_packet_fragments(void){ 1075 1076 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1077 uint8_t status = ERROR_CODE_SUCCESS; 1078 // multiple packets could be send on a synchronous HCI transport 1079 while (true){ 1080 1081 // get current data 1082 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1083 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1084 bool more_fragments = false; 1085 1086 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1087 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1088 more_fragments = true; 1089 current_iso_data_packet_length = max_iso_data_packet_length; 1090 } 1091 1092 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1093 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1094 uint8_t pb_flags; 1095 if (iso_header_pos == 0u){ 1096 // first fragment, keep TS field 1097 pb_flags = more_fragments ? 0x00 : 0x02; 1098 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1099 } else { 1100 // later fragment, drop TS field 1101 pb_flags = more_fragments ? 0x01 : 0x03; 1102 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1103 } 1104 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1105 1106 // update header len 1107 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1108 1109 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1110 if (more_fragments){ 1111 // update start of next fragment to send 1112 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1113 } else { 1114 // done 1115 hci_stack->iso_fragmentation_pos = 0; 1116 hci_stack->iso_fragmentation_total_size = 0; 1117 } 1118 1119 // send packet 1120 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1121 const int size = current_iso_data_packet_length + 4; 1122 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1123 hci_stack->iso_fragmentation_tx_active = true; 1124 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1125 if (err != 0){ 1126 // no error from HCI Transport expected 1127 status = ERROR_CODE_HARDWARE_FAILURE; 1128 } 1129 1130 // done yet? 1131 if (!more_fragments) break; 1132 1133 // can send more? 1134 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1135 } 1136 1137 // release buffer now for synchronous transport 1138 if (hci_transport_synchronous()){ 1139 hci_stack->iso_fragmentation_tx_active = false; 1140 hci_release_packet_buffer(); 1141 hci_emit_transport_packet_sent(); 1142 } 1143 1144 return status; 1145 } 1146 1147 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1148 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1149 1150 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1151 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1152 if (iso_stream == NULL){ 1153 hci_release_packet_buffer(); 1154 hci_iso_notify_can_send_now(); 1155 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1156 } 1157 1158 // TODO: check for space on controller 1159 1160 // skip iso packets if needed 1161 if (iso_stream->num_packets_to_skip > 0){ 1162 iso_stream->num_packets_to_skip--; 1163 // pretend it was processed and trigger next one 1164 hci_release_packet_buffer(); 1165 hci_iso_notify_can_send_now(); 1166 return ERROR_CODE_SUCCESS; 1167 } 1168 1169 // track outgoing packet sent 1170 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1171 iso_stream->num_packets_sent++; 1172 1173 // setup data 1174 hci_stack->iso_fragmentation_total_size = size; 1175 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1176 1177 return hci_send_iso_packet_fragments(); 1178 } 1179 #endif 1180 1181 static void acl_handler(uint8_t *packet, uint16_t size){ 1182 1183 // get info 1184 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1185 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1186 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1187 uint16_t acl_length = READ_ACL_LENGTH(packet); 1188 1189 // ignore non-registered handle 1190 if (!conn){ 1191 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1192 return; 1193 } 1194 1195 // assert packet is complete 1196 if ((acl_length + 4u) != size){ 1197 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1198 return; 1199 } 1200 1201 #ifdef ENABLE_CLASSIC 1202 // update idle timestamp 1203 hci_connection_timestamp(conn); 1204 #endif 1205 1206 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1207 hci_stack->host_completed_packets = 1; 1208 conn->num_packets_completed++; 1209 #endif 1210 1211 // handle different packet types 1212 switch (acl_flags & 0x03u) { 1213 1214 case 0x01: // continuation fragment 1215 1216 // sanity checks 1217 if (conn->acl_recombination_pos == 0u) { 1218 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1219 return; 1220 } 1221 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1222 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1223 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1224 conn->acl_recombination_pos = 0; 1225 return; 1226 } 1227 1228 // append fragment payload (header already stored) 1229 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1230 &packet[4], acl_length); 1231 conn->acl_recombination_pos += acl_length; 1232 1233 // forward complete L2CAP packet if complete. 1234 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1235 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1236 // reset recombination buffer 1237 conn->acl_recombination_length = 0; 1238 conn->acl_recombination_pos = 0; 1239 } 1240 break; 1241 1242 case 0x02: { // first fragment 1243 1244 // sanity check 1245 if (conn->acl_recombination_pos) { 1246 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1247 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1248 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1249 } 1250 conn->acl_recombination_pos = 0; 1251 } 1252 1253 // peek into L2CAP packet! 1254 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1255 1256 // compare fragment size to L2CAP packet size 1257 if (acl_length >= (l2cap_length + 4u)){ 1258 // forward fragment as L2CAP packet 1259 hci_emit_acl_packet(packet, l2cap_length + 8u); 1260 } else { 1261 1262 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1263 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1264 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1265 return; 1266 } 1267 1268 // store first fragment and tweak acl length for complete package 1269 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1270 packet, acl_length + 4u); 1271 conn->acl_recombination_pos = acl_length + 4u; 1272 conn->acl_recombination_length = l2cap_length; 1273 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1274 } 1275 break; 1276 1277 } 1278 default: 1279 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1280 return; 1281 } 1282 1283 // execute main loop 1284 hci_run(); 1285 } 1286 1287 static void hci_connection_stop_timer(hci_connection_t * conn){ 1288 btstack_run_loop_remove_timer(&conn->timeout); 1289 #ifdef ENABLE_CLASSIC 1290 btstack_run_loop_remove_timer(&conn->timeout_sco); 1291 #endif 1292 } 1293 1294 static void hci_shutdown_connection(hci_connection_t *conn){ 1295 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1296 1297 #ifdef ENABLE_CLASSIC 1298 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1299 bd_addr_type_t addr_type = conn->address_type; 1300 #endif 1301 #ifdef HAVE_SCO_TRANSPORT 1302 hci_con_handle_t con_handle = conn->con_handle; 1303 #endif 1304 #endif 1305 1306 hci_connection_stop_timer(conn); 1307 1308 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1309 btstack_memory_hci_connection_free( conn ); 1310 1311 // now it's gone 1312 hci_emit_nr_connections_changed(); 1313 1314 #ifdef ENABLE_CLASSIC 1315 #ifdef ENABLE_SCO_OVER_HCI 1316 // update SCO 1317 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1318 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1319 } 1320 #endif 1321 #ifdef HAVE_SCO_TRANSPORT 1322 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1323 hci_stack->sco_transport->close(con_handle); 1324 } 1325 #endif 1326 #endif 1327 } 1328 1329 #ifdef ENABLE_CLASSIC 1330 1331 static const uint16_t hci_acl_packet_type_sizes[] = { 1332 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1333 HCI_ACL_DH1_SIZE, 0, 0, 0, 1334 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1335 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1336 }; 1337 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1338 0, // 3 slot packets 1339 1, // 5 slot packets 1340 25, // EDR 2 mpbs 1341 26, // EDR 3 mbps 1342 39, // 3 slot EDR packtes 1343 40, // 5 slot EDR packet 1344 }; 1345 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1346 0x0f00, // 3 slot packets 1347 0xf000, // 5 slot packets 1348 0x1102, // EDR 2 mpbs 1349 0x2204, // EDR 3 mbps 1350 0x0300, // 3 slot EDR packtes 1351 0x3000, // 5 slot EDR packet 1352 }; 1353 1354 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1355 // enable packet types based on size 1356 uint16_t packet_types = 0; 1357 unsigned int i; 1358 for (i=0;i<16;i++){ 1359 if (hci_acl_packet_type_sizes[i] == 0) continue; 1360 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1361 packet_types |= 1 << i; 1362 } 1363 } 1364 // disable packet types due to missing local supported features 1365 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1366 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1367 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1368 if (feature_set) continue; 1369 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1370 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1371 } 1372 return packet_types; 1373 } 1374 1375 uint16_t hci_usable_acl_packet_types(void){ 1376 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1377 // flip bits for "may not be used" 1378 return active_packet_types ^ 0x3306; 1379 } 1380 1381 void hci_enable_acl_packet_types(uint16_t packet_types){ 1382 hci_stack->enabled_packet_types_acl = packet_types; 1383 } 1384 1385 static const struct { 1386 uint8_t feature_index; 1387 uint16_t feature_packet_mask; 1388 } hci_sco_packet_type_feature_requirements[] = { 1389 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1390 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1391 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1392 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1393 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1394 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1395 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1396 }; 1397 1398 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1399 static const struct { 1400 uint16_t type; 1401 uint16_t payload_length; 1402 } hci_sco_packet_type_to_payload_length[] = { 1403 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1404 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1405 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1406 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1407 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1408 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1409 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1410 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1411 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1412 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1413 }; 1414 1415 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1416 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1417 unsigned int i; 1418 // disable packet types due to missing local supported features 1419 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1420 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1421 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1422 if (feature_set) continue; 1423 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); 1424 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1425 } 1426 return packet_types; 1427 } 1428 1429 uint16_t hci_usable_sco_packet_types(void){ 1430 return hci_stack->usable_packet_types_sco; 1431 } 1432 1433 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1434 uint8_t i; 1435 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1436 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1437 return hci_sco_packet_type_to_payload_length[i].payload_length; 1438 } 1439 } 1440 return 0; 1441 } 1442 1443 #endif 1444 1445 uint8_t* hci_get_outgoing_packet_buffer(void){ 1446 // hci packet buffer is >= acl data packet length 1447 return hci_stack->hci_packet_buffer; 1448 } 1449 1450 uint16_t hci_max_acl_data_packet_length(void){ 1451 return hci_stack->acl_data_packet_length; 1452 } 1453 1454 #ifdef ENABLE_CLASSIC 1455 bool hci_extended_sco_link_supported(void){ 1456 // No. 31, byte 3, bit 7 1457 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1458 } 1459 #endif 1460 1461 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1462 // No. 54, byte 6, bit 6 1463 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1464 } 1465 1466 #ifdef ENABLE_CLASSIC 1467 static bool gap_ssp_supported(void){ 1468 // No. 51, byte 6, bit 3 1469 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1470 } 1471 #endif 1472 1473 bool hci_classic_supported(void){ 1474 #ifdef ENABLE_CLASSIC 1475 // No. 37, byte 4, bit 5, = No BR/EDR Support 1476 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1477 #else 1478 return false; 1479 #endif 1480 } 1481 1482 bool hci_le_supported(void){ 1483 #ifdef ENABLE_BLE 1484 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1485 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1486 #else 1487 return false; 1488 #endif 1489 } 1490 1491 static bool hci_command_supported(uint8_t command_index){ 1492 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1493 } 1494 1495 #ifdef ENABLE_BLE 1496 1497 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1498 bool hci_le_extended_advertising_supported(void){ 1499 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1500 } 1501 #endif 1502 1503 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1504 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1505 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1506 } else { 1507 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1508 } 1509 } 1510 1511 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1512 *addr_type = hci_stack->le_own_addr_type; 1513 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1514 } 1515 1516 #ifdef ENABLE_LE_PERIPHERAL 1517 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1518 *addr_type = hci_stack->le_advertisements_own_addr_type; 1519 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1520 } 1521 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1522 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1523 if (advertising_handle == 0){ 1524 gap_le_get_own_advertisements_address(addr_type, addr); 1525 } else { 1526 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1527 if (advertising_set != NULL){ 1528 switch (advertising_set->extended_params.own_address_type){ 1529 case BD_ADDR_TYPE_LE_PUBLIC: 1530 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1531 memcpy(addr, hci_stack->local_bd_addr, 6); 1532 break; 1533 case BD_ADDR_TYPE_LE_RANDOM: 1534 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1535 memcpy(addr, advertising_set->random_address, 6); 1536 break; 1537 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1538 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1539 // do nothing as random address was already set from enhanced connection complete 1540 break; 1541 default: 1542 break; 1543 } 1544 } 1545 } 1546 } 1547 #endif 1548 #endif 1549 1550 #ifdef ENABLE_LE_CENTRAL 1551 1552 /** 1553 * @brief Get own addr type and address used for LE connections (Central) 1554 */ 1555 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1556 *addr_type = hci_stack->le_connection_own_addr_type; 1557 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1558 } 1559 1560 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1561 1562 uint16_t offset = 3; 1563 uint8_t num_reports = packet[offset]; 1564 offset += 1; 1565 1566 uint16_t i; 1567 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1568 for (i=0; (i<num_reports) && (offset < size);i++){ 1569 // sanity checks on data_length: 1570 uint8_t data_length = packet[offset + 8]; 1571 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1572 if ((offset + 9u + data_length + 1u) > size) return; 1573 // setup event 1574 uint8_t event_size = 10u + data_length; 1575 uint16_t pos = 0; 1576 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1577 event[pos++] = event_size; 1578 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1579 offset += 8; 1580 pos += 8; 1581 event[pos++] = packet[offset + 1 + data_length]; // rssi 1582 event[pos++] = data_length; 1583 offset++; 1584 (void)memcpy(&event[pos], &packet[offset], data_length); 1585 pos += data_length; 1586 offset += data_length + 1u; // rssi 1587 hci_emit_btstack_event(event, pos, 1); 1588 } 1589 } 1590 1591 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1592 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1593 uint16_t offset = 3; 1594 uint8_t num_reports = packet[offset++]; 1595 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1596 uint8_t i; 1597 for (i=0; (i<num_reports) && (offset < size);i++){ 1598 // sanity checks on data_length: 1599 uint16_t data_length = packet[offset + 23]; 1600 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1601 if ((offset + 24u + data_length) > size) return; 1602 uint16_t event_type = little_endian_read_16(packet, offset); 1603 offset += 2; 1604 if ((event_type & 0x10) != 0) { 1605 // setup legacy event 1606 uint8_t legacy_event_type; 1607 switch (event_type){ 1608 case 0x13: // 0b0010011 1609 // ADV_IND 1610 legacy_event_type = 0; 1611 break; 1612 case 0x15: // 0b0010101 1613 // ADV_DIRECT_IND 1614 legacy_event_type = 1; 1615 break; 1616 case 0x12: // 0b0010010 1617 // ADV_SCAN_IND 1618 legacy_event_type = 2; 1619 break; 1620 case 0x10: // 0b0010000: 1621 // ADV_NONCONN_IND 1622 legacy_event_type = 3; 1623 break; 1624 case 0x1B: // 0b0011011 1625 case 0x1A: // 0b0011010 1626 // SCAN_RSP 1627 legacy_event_type = 4; 1628 break; 1629 default: 1630 legacy_event_type = 0; 1631 break; 1632 } 1633 uint16_t pos = 0; 1634 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1635 event[pos++] = 10u + data_length; 1636 event[pos++] = legacy_event_type; 1637 // copy address type + address 1638 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1639 offset += 7; 1640 pos += 7; 1641 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1642 offset += 4; 1643 // copy rssi 1644 event[pos++] = packet[offset++]; 1645 // skip periodic advertising interval and direct address 1646 offset += 9; 1647 // copy data len + data; 1648 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1649 pos += 1 +data_length; 1650 offset += 1+ data_length; 1651 hci_emit_btstack_event(event, pos, 1); 1652 } else { 1653 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1654 uint8_t report_len = 24 + data_length; 1655 event[1] = report_len; 1656 little_endian_store_16(event, 2, event_type); 1657 memcpy(&event[4], &packet[offset], report_len); 1658 offset += report_len; 1659 hci_emit_btstack_event(event, 2 + report_len, 1); 1660 } 1661 } 1662 } 1663 #endif 1664 1665 #endif 1666 #endif 1667 1668 #ifdef ENABLE_BLE 1669 #ifdef ENABLE_LE_PERIPHERAL 1670 static void hci_update_advertisements_enabled_for_current_roles(void){ 1671 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1672 // get number of active le slave connections 1673 int num_slave_connections = 0; 1674 btstack_linked_list_iterator_t it; 1675 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1676 while (btstack_linked_list_iterator_has_next(&it)){ 1677 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1678 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1679 if (con->state != OPEN) continue; 1680 if (con->role != HCI_ROLE_SLAVE) continue; 1681 if (!hci_is_le_connection(con)) continue; 1682 num_slave_connections++; 1683 } 1684 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1685 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1686 } else { 1687 hci_stack->le_advertisements_enabled_for_current_roles = false; 1688 } 1689 } 1690 #endif 1691 #endif 1692 1693 #ifdef ENABLE_CLASSIC 1694 static void gap_run_set_local_name(void){ 1695 hci_reserve_packet_buffer(); 1696 uint8_t * packet = hci_stack->hci_packet_buffer; 1697 // construct HCI Command and send 1698 uint16_t opcode = hci_write_local_name.opcode; 1699 packet[0] = opcode & 0xff; 1700 packet[1] = opcode >> 8; 1701 packet[2] = DEVICE_NAME_LEN; 1702 memset(&packet[3], 0, DEVICE_NAME_LEN); 1703 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1704 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1705 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1706 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1707 // expand '00:00:00:00:00:00' in name with bd_addr 1708 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1709 hci_send_prepared_cmd_packet(); 1710 } 1711 1712 static void gap_run_set_eir_data(void){ 1713 hci_reserve_packet_buffer(); 1714 uint8_t * packet = hci_stack->hci_packet_buffer; 1715 // construct HCI Command in-place and send 1716 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1717 uint16_t offset = 0; 1718 packet[offset++] = opcode & 0xff; 1719 packet[offset++] = opcode >> 8; 1720 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1721 packet[offset++] = 0; // FEC not required 1722 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1723 if (hci_stack->eir_data){ 1724 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1725 ad_context_t context; 1726 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1727 uint8_t data_type = ad_iterator_get_data_type(&context); 1728 uint8_t size = ad_iterator_get_data_len(&context); 1729 const uint8_t *data = ad_iterator_get_data(&context); 1730 // copy item 1731 packet[offset++] = size + 1; 1732 packet[offset++] = data_type; 1733 memcpy(&packet[offset], data, size); 1734 // update name item 1735 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1736 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1737 } 1738 offset += size; 1739 } 1740 } else { 1741 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1742 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1743 packet[offset++] = bytes_to_copy + 1; 1744 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1745 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1746 // expand '00:00:00:00:00:00' in name with bd_addr 1747 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1748 } 1749 hci_send_prepared_cmd_packet(); 1750 } 1751 1752 static void hci_run_gap_tasks_classic(void){ 1753 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1754 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1755 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1756 return; 1757 } 1758 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1759 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1760 gap_run_set_local_name(); 1761 return; 1762 } 1763 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1764 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1765 gap_run_set_eir_data(); 1766 return; 1767 } 1768 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1769 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1770 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1771 return; 1772 } 1773 // write page scan activity 1774 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1775 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1776 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1777 return; 1778 } 1779 // write page scan type 1780 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1781 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1782 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1783 return; 1784 } 1785 // write page timeout 1786 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1787 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1788 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1789 return; 1790 } 1791 // send scan enable 1792 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1793 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1794 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1795 return; 1796 } 1797 // send write scan activity 1798 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1799 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1800 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1801 return; 1802 } 1803 // send write inquiry transmit power level 1804 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1805 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1806 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1807 return; 1808 } 1809 } 1810 #endif 1811 1812 #ifndef HAVE_HOST_CONTROLLER_API 1813 1814 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1815 if (!hci_stack->config) return 0; 1816 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1817 return baud_rate; 1818 } 1819 1820 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1821 UNUSED(ds); 1822 1823 switch (hci_stack->substate){ 1824 case HCI_INIT_W4_SEND_RESET: 1825 log_info("Resend HCI Reset"); 1826 hci_stack->substate = HCI_INIT_SEND_RESET; 1827 hci_stack->num_cmd_packets = 1; 1828 hci_run(); 1829 break; 1830 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1831 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1832 if (hci_stack->hci_transport->reset_link){ 1833 hci_stack->hci_transport->reset_link(); 1834 } 1835 1836 /* fall through */ 1837 1838 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1839 log_info("Resend HCI Reset - CSR Warm Boot"); 1840 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1841 hci_stack->num_cmd_packets = 1; 1842 hci_run(); 1843 break; 1844 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1845 if (hci_stack->hci_transport->set_baudrate){ 1846 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1847 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1848 hci_stack->hci_transport->set_baudrate(baud_rate); 1849 } 1850 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1851 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1852 if (hci_stack->hci_transport->reset_link){ 1853 log_info("Link Reset"); 1854 hci_stack->hci_transport->reset_link(); 1855 } 1856 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1857 hci_run(); 1858 } 1859 break; 1860 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1861 // otherwise continue 1862 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1863 hci_send_cmd(&hci_read_local_supported_commands); 1864 break; 1865 default: 1866 break; 1867 } 1868 } 1869 #endif 1870 1871 static void hci_initializing_next_state(void){ 1872 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1873 } 1874 1875 static void hci_init_done(void){ 1876 // done. tell the app 1877 log_info("hci_init_done -> HCI_STATE_WORKING"); 1878 hci_stack->state = HCI_STATE_WORKING; 1879 hci_emit_state(); 1880 } 1881 1882 // assumption: hci_can_send_command_packet_now() == true 1883 static void hci_initializing_run(void){ 1884 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1885 1886 if (!hci_can_send_command_packet_now()) return; 1887 1888 #ifndef HAVE_HOST_CONTROLLER_API 1889 bool need_baud_change = hci_stack->config 1890 && hci_stack->chipset 1891 && hci_stack->chipset->set_baudrate_command 1892 && hci_stack->hci_transport->set_baudrate 1893 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1894 #endif 1895 1896 switch (hci_stack->substate){ 1897 case HCI_INIT_SEND_RESET: 1898 hci_state_reset(); 1899 1900 #ifndef HAVE_HOST_CONTROLLER_API 1901 // prepare reset if command complete not received in 100ms 1902 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1903 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1904 btstack_run_loop_add_timer(&hci_stack->timeout); 1905 #endif 1906 // send command 1907 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1908 hci_send_cmd(&hci_reset); 1909 break; 1910 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1911 hci_send_cmd(&hci_read_local_version_information); 1912 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1913 break; 1914 1915 #ifndef HAVE_HOST_CONTROLLER_API 1916 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1917 hci_state_reset(); 1918 // prepare reset if command complete not received in 100ms 1919 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1920 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1921 btstack_run_loop_add_timer(&hci_stack->timeout); 1922 // send command 1923 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1924 hci_send_cmd(&hci_reset); 1925 break; 1926 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1927 hci_state_reset(); 1928 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1929 hci_send_cmd(&hci_reset); 1930 break; 1931 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1932 hci_reserve_packet_buffer(); 1933 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1934 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1935 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1936 hci_send_prepared_cmd_packet(); 1937 break; 1938 } 1939 case HCI_INIT_SET_BD_ADDR: 1940 hci_reserve_packet_buffer(); 1941 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1942 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1943 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1944 hci_send_prepared_cmd_packet(); 1945 break; 1946 case HCI_INIT_SEND_READ_LOCAL_NAME: 1947 #ifdef ENABLE_CLASSIC 1948 hci_send_cmd(&hci_read_local_name); 1949 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1950 break; 1951 #endif 1952 /* fall through */ 1953 1954 case HCI_INIT_SEND_BAUD_CHANGE: 1955 if (need_baud_change) { 1956 hci_reserve_packet_buffer(); 1957 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1958 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1959 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1960 hci_send_prepared_cmd_packet(); 1961 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1962 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1963 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1964 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1965 btstack_run_loop_add_timer(&hci_stack->timeout); 1966 } 1967 break; 1968 } 1969 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1970 1971 /* fall through */ 1972 1973 case HCI_INIT_CUSTOM_INIT: 1974 case HCI_INIT_CUSTOM_PRE_INIT: 1975 // Custom initialization 1976 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1977 hci_reserve_packet_buffer(); 1978 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1979 bool send_cmd = false; 1980 switch (hci_stack->chipset_result){ 1981 case BTSTACK_CHIPSET_VALID_COMMAND: 1982 send_cmd = true; 1983 switch (hci_stack->substate){ 1984 case HCI_INIT_CUSTOM_INIT: 1985 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1986 break; 1987 case HCI_INIT_CUSTOM_PRE_INIT: 1988 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1989 break; 1990 default: 1991 btstack_assert(false); 1992 break; 1993 } 1994 break; 1995 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1996 send_cmd = true; 1997 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1998 log_info("CSR Warm Boot"); 1999 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 2000 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2001 btstack_run_loop_add_timer(&hci_stack->timeout); 2002 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2003 && hci_stack->config 2004 && hci_stack->chipset 2005 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2006 && hci_stack->hci_transport->set_baudrate 2007 && hci_transport_uart_get_main_baud_rate()){ 2008 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2009 } else { 2010 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2011 } 2012 break; 2013 default: 2014 break; 2015 } 2016 2017 if (send_cmd){ 2018 hci_send_prepared_cmd_packet(); 2019 break; 2020 } else { 2021 hci_release_packet_buffer(); 2022 } 2023 log_info("Init script done"); 2024 2025 // Custom Pre-Init complete, start regular init with HCI Reset 2026 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2027 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2028 hci_send_cmd(&hci_reset); 2029 break; 2030 } 2031 2032 // Init script download on Broadcom chipsets causes: 2033 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2034 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2035 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2036 2037 // - baud rate to reset, restore UART baud rate if needed 2038 if (need_baud_change) { 2039 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2040 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2041 hci_stack->hci_transport->set_baudrate(baud_rate); 2042 } 2043 2044 uint16_t bcm_delay_ms = 300; 2045 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2046 // -> Work around: wait here. 2047 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2048 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2049 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2050 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2051 btstack_run_loop_add_timer(&hci_stack->timeout); 2052 break; 2053 } 2054 } 2055 #endif 2056 /* fall through */ 2057 2058 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2059 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2060 hci_send_cmd(&hci_read_local_supported_commands); 2061 break; 2062 case HCI_INIT_READ_BD_ADDR: 2063 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2064 hci_send_cmd(&hci_read_bd_addr); 2065 break; 2066 case HCI_INIT_READ_BUFFER_SIZE: 2067 // only read buffer size if supported 2068 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2069 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2070 hci_send_cmd(&hci_read_buffer_size); 2071 break; 2072 } 2073 2074 /* fall through */ 2075 2076 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2077 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2078 hci_send_cmd(&hci_read_local_supported_features); 2079 break; 2080 2081 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2082 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2083 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2084 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2085 break; 2086 case HCI_INIT_HOST_BUFFER_SIZE: 2087 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2088 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2089 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2090 break; 2091 #endif 2092 2093 case HCI_INIT_SET_EVENT_MASK: 2094 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2095 if (hci_le_supported()){ 2096 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2097 } else { 2098 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2099 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2100 } 2101 break; 2102 2103 case HCI_INIT_SET_EVENT_MASK_2: 2104 // On Bluetooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2105 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2106 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2107 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2108 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2109 // Encryption Change Event v2 - bit 25 2110 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2111 break; 2112 } 2113 2114 #ifdef ENABLE_CLASSIC 2115 /* fall through */ 2116 2117 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2118 if (hci_classic_supported() && gap_ssp_supported()){ 2119 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2120 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2121 break; 2122 } 2123 2124 /* fall through */ 2125 2126 case HCI_INIT_WRITE_INQUIRY_MODE: 2127 if (hci_classic_supported()){ 2128 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2129 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2130 break; 2131 } 2132 2133 /* fall through */ 2134 2135 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2136 // skip write secure connections host support if not supported or disabled 2137 if (hci_classic_supported() && hci_stack->secure_connections_enable 2138 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2139 hci_stack->secure_connections_active = true; 2140 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2141 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2142 break; 2143 } 2144 2145 /* fall through */ 2146 2147 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2148 // skip set min encryption key size 2149 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2150 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2151 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2152 break; 2153 } 2154 2155 #ifdef ENABLE_SCO_OVER_HCI 2156 /* fall through */ 2157 2158 // only sent if ENABLE_SCO_OVER_HCI is defined 2159 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2160 // skip write synchronous flow control if not supported 2161 if (hci_classic_supported() 2162 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2163 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2164 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2165 break; 2166 } 2167 /* fall through */ 2168 2169 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2170 // skip write default erroneous data reporting if not supported 2171 if (hci_classic_supported() 2172 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2173 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2174 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2175 break; 2176 } 2177 #endif 2178 2179 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2180 /* fall through */ 2181 2182 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2183 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2184 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2185 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2186 #ifdef ENABLE_SCO_OVER_HCI 2187 log_info("BCM: Route SCO data via HCI transport"); 2188 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2189 #endif 2190 #ifdef ENABLE_SCO_OVER_PCM 2191 log_info("BCM: Route SCO data via PCM interface"); 2192 #ifdef ENABLE_BCM_PCM_WBS 2193 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2194 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2195 #else 2196 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2197 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2198 #endif 2199 #endif 2200 break; 2201 } 2202 #endif 2203 2204 #ifdef ENABLE_SCO_OVER_PCM 2205 /* fall through */ 2206 2207 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2208 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2209 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2210 log_info("BCM: Config PCM interface for I2S"); 2211 #ifdef ENABLE_BCM_PCM_WBS 2212 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2213 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2214 #else 2215 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2216 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2217 #endif 2218 break; 2219 } 2220 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2221 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2222 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2223 log_info("BCM: Config PCM Data format"); 2224 // msb first, fill bits 0, left justified 2225 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2226 break; 2227 } 2228 #ifdef HAVE_BCM_PCM2 2229 case HCI_INIT_BCM_PCM2_SETUP: 2230 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2231 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2232 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2233 uint32_t pcm_clock_freq; 2234 uint8_t ch_0_period; 2235 #ifdef ENABLE_BCM_PCM_WBS 2236 // 512 kHz, resample 8 kHz to 16 khz 2237 pcm_clock_freq = 512000; 2238 ch_0_period = 1; 2239 #else 2240 // 256 khz, 8 khz output 2241 pcm_clock_freq = 256000; 2242 ch_0_period = 0; 2243 #endif 2244 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2245 hci_send_cmd(&hci_bcm_pcm2_setup, 2246 0x00, // Action = Write 2247 0x00, // Test_Options = None 2248 op_mode, // Op_Mode 2249 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2250 pcm_clock_freq, // PCM_Clock_Freq 2251 0x01, // Sync_Signal_Width 2252 0x0F, // Slot_Width 2253 0x01, // NumberOfSlots 2254 0x00, // Bank_0_Fill_Mode = 0s 2255 0x00, // Bank_0_Number_of_Fill_Bits 2256 0x00, // Bank_0_Programmable_Fill_Data 2257 0x00, // Bank_1_Fill_Mode = 0s 2258 0x00, // Bank_1_Number_of_Fill_Bits 2259 0x00, // Bank_1_Programmable_Fill_Data 2260 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2261 0x00, // Ch_0_Slot_Number 2262 0x01, // Ch_1_Slot_Number 2263 0x02, // Ch_2_Slot_Number 2264 0x03, // Ch_3_Slot_Number 2265 0x04, // Ch_4_Slot_Number 2266 ch_0_period, // Ch_0_Period 2267 0x00, // Ch_1_Period 2268 0x00 // Ch_2_Period 2269 ); 2270 break; 2271 } 2272 #endif 2273 #endif /* ENABLE_SCO_OVER_PCM */ 2274 #endif /* ENABLE_CLASSIC */ 2275 2276 #ifdef ENABLE_BLE 2277 /* fall through */ 2278 2279 // LE INIT 2280 case HCI_INIT_LE_READ_BUFFER_SIZE: 2281 if (hci_le_supported()){ 2282 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2283 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2284 hci_send_cmd(&hci_le_read_buffer_size_v2); 2285 } else { 2286 hci_send_cmd(&hci_le_read_buffer_size); 2287 } 2288 break; 2289 } 2290 2291 /* fall through */ 2292 2293 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2294 // skip write le host if not supported (e.g. on LE only EM9301) 2295 if (hci_le_supported() 2296 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2297 // LE Supported Host = 1, Simultaneous Host = 0 2298 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2299 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2300 break; 2301 } 2302 2303 /* fall through */ 2304 2305 case HCI_INIT_LE_SET_EVENT_MASK: 2306 if (hci_le_supported()){ 2307 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2308 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2309 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2310 #else 2311 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2312 #endif 2313 break; 2314 } 2315 #endif 2316 2317 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2318 /* fall through */ 2319 2320 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2321 if (hci_le_supported() 2322 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2323 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2324 hci_send_cmd(&hci_le_read_maximum_data_length); 2325 break; 2326 } 2327 2328 /* fall through */ 2329 2330 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2331 if (hci_le_supported() 2332 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2333 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2334 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2335 break; 2336 } 2337 #endif 2338 2339 #ifdef ENABLE_LE_CENTRAL 2340 /* fall through */ 2341 2342 case HCI_INIT_READ_WHITE_LIST_SIZE: 2343 if (hci_le_supported()){ 2344 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2345 hci_send_cmd(&hci_le_read_white_list_size); 2346 break; 2347 } 2348 2349 #endif 2350 2351 #ifdef ENABLE_LE_PERIPHERAL 2352 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2353 /* fall through */ 2354 2355 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2356 if (hci_le_extended_advertising_supported()){ 2357 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2358 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2359 break; 2360 } 2361 #endif 2362 #endif 2363 2364 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2365 /* fall through */ 2366 2367 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2368 if (hci_le_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_HOST_FEATURE_V1)) { 2369 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2370 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2371 break; 2372 } 2373 #endif 2374 2375 #ifdef ENABLE_BLE 2376 /* fall through */ 2377 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTION_SUBRATING: 2378 if (hci_le_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_HOST_FEATURE_V1)) { 2379 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTION_SUBRATING; 2380 hci_send_cmd(&hci_le_set_host_feature, 38, 1); 2381 break; 2382 } 2383 #endif 2384 /* fall through */ 2385 2386 case HCI_INIT_DONE: 2387 hci_stack->substate = HCI_INIT_DONE; 2388 // main init sequence complete 2389 #ifdef ENABLE_CLASSIC 2390 // check if initial Classic GAP Tasks are completed 2391 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2392 hci_run_gap_tasks_classic(); 2393 break; 2394 } 2395 #endif 2396 #ifdef ENABLE_BLE 2397 #ifdef ENABLE_LE_CENTRAL 2398 // check if initial LE GAP Tasks are completed 2399 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2400 hci_run_general_gap_le(); 2401 break; 2402 } 2403 #endif 2404 #endif 2405 hci_init_done(); 2406 break; 2407 2408 default: 2409 return; 2410 } 2411 } 2412 2413 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2414 bool command_completed = false; 2415 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2416 uint16_t opcode = little_endian_read_16(packet,3); 2417 if (opcode == hci_stack->last_cmd_opcode){ 2418 command_completed = true; 2419 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2420 } else { 2421 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2422 } 2423 } 2424 2425 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2426 uint8_t status = packet[2]; 2427 uint16_t opcode = little_endian_read_16(packet,4); 2428 if (opcode == hci_stack->last_cmd_opcode){ 2429 if (status){ 2430 command_completed = true; 2431 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2432 } else { 2433 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2434 } 2435 } else { 2436 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2437 } 2438 } 2439 #ifndef HAVE_HOST_CONTROLLER_API 2440 // Vendor == CSR 2441 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2442 // TODO: track actual command 2443 command_completed = true; 2444 } 2445 2446 // Vendor == Toshiba 2447 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2448 // TODO: track actual command 2449 command_completed = true; 2450 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2451 hci_stack->num_cmd_packets = 1; 2452 } 2453 #endif 2454 2455 return command_completed; 2456 } 2457 2458 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2459 2460 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2461 2462 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2463 2464 #ifndef HAVE_HOST_CONTROLLER_API 2465 2466 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2467 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2468 // 2469 // HCI Reset 2470 // Timeout 100 ms 2471 // HCI Reset 2472 // Command Complete Reset 2473 // HCI Read Local Version Information 2474 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2475 // hang... 2476 // 2477 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2478 if (!command_completed 2479 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2480 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2481 2482 uint16_t opcode = little_endian_read_16(packet,3); 2483 if (opcode == hci_reset.opcode){ 2484 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2485 return; 2486 } 2487 } 2488 2489 // CSR & H5 2490 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2491 if (!command_completed 2492 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2493 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2494 2495 uint16_t opcode = little_endian_read_16(packet,3); 2496 if (opcode == hci_reset.opcode){ 2497 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2498 return; 2499 } 2500 } 2501 2502 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2503 // fix: Correct substate and behave as command below 2504 if (command_completed){ 2505 switch (hci_stack->substate){ 2506 case HCI_INIT_SEND_RESET: 2507 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2508 break; 2509 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2510 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2511 break; 2512 default: 2513 break; 2514 } 2515 } 2516 2517 #endif 2518 2519 if (!command_completed) return; 2520 2521 bool need_baud_change = false; 2522 bool need_addr_change = false; 2523 2524 #ifndef HAVE_HOST_CONTROLLER_API 2525 need_baud_change = hci_stack->config 2526 && hci_stack->chipset 2527 && hci_stack->chipset->set_baudrate_command 2528 && hci_stack->hci_transport->set_baudrate 2529 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2530 2531 need_addr_change = hci_stack->custom_bd_addr_set 2532 && hci_stack->chipset 2533 && hci_stack->chipset->set_bd_addr_command; 2534 #endif 2535 2536 switch(hci_stack->substate){ 2537 2538 #ifndef HAVE_HOST_CONTROLLER_API 2539 case HCI_INIT_SEND_RESET: 2540 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2541 // fix: just correct substate and behave as command below 2542 2543 /* fall through */ 2544 #endif 2545 2546 case HCI_INIT_W4_SEND_RESET: 2547 btstack_run_loop_remove_timer(&hci_stack->timeout); 2548 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2549 return; 2550 2551 #ifndef HAVE_HOST_CONTROLLER_API 2552 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2553 // for STLC2500D, baud rate change already happened. 2554 // for others, baud rate gets changed now 2555 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2556 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2557 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2558 hci_stack->hci_transport->set_baudrate(baud_rate); 2559 } 2560 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2561 return; 2562 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2563 btstack_run_loop_remove_timer(&hci_stack->timeout); 2564 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2565 return; 2566 case HCI_INIT_W4_CUSTOM_INIT: 2567 // repeat custom init 2568 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2569 return; 2570 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2571 // repeat custom init 2572 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2573 return; 2574 #endif 2575 2576 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2577 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2578 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2579 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2580 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2581 return; 2582 } 2583 if (need_addr_change){ 2584 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2585 return; 2586 } 2587 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2588 return; 2589 #ifndef HAVE_HOST_CONTROLLER_API 2590 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2591 if (need_baud_change){ 2592 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2593 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2594 hci_stack->hci_transport->set_baudrate(baud_rate); 2595 } 2596 if (need_addr_change){ 2597 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2598 return; 2599 } 2600 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2601 return; 2602 case HCI_INIT_W4_SET_BD_ADDR: 2603 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2604 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2605 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2606 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2607 return; 2608 } 2609 // skipping st warm boot 2610 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2611 return; 2612 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2613 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2614 return; 2615 #endif 2616 2617 case HCI_INIT_DONE: 2618 // set state if we came here by fall through 2619 hci_stack->substate = HCI_INIT_DONE; 2620 return; 2621 2622 default: 2623 break; 2624 } 2625 hci_initializing_next_state(); 2626 } 2627 2628 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2629 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2630 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2631 // To prevent accidentally freeing the HCI connection for the ACL connection, 2632 // check if we have been aware of the HCI connection 2633 switch (conn->state){ 2634 case SENT_CREATE_CONNECTION: 2635 case RECEIVED_CONNECTION_REQUEST: 2636 case ACCEPTED_CONNECTION_REQUEST: 2637 break; 2638 default: 2639 return; 2640 } 2641 2642 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2643 bd_addr_t bd_address; 2644 (void)memcpy(&bd_address, conn->address, 6); 2645 2646 #ifdef ENABLE_CLASSIC 2647 // cache needed data 2648 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2649 #endif 2650 2651 // connection failed, remove entry 2652 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2653 btstack_memory_hci_connection_free( conn ); 2654 2655 #ifdef ENABLE_CLASSIC 2656 // notify client if dedicated bonding 2657 if (notify_dedicated_bonding_failed){ 2658 log_info("hci notify_dedicated_bonding_failed"); 2659 hci_emit_dedicated_bonding_result(bd_address, status); 2660 } 2661 2662 // if authentication error, also delete link key 2663 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2664 gap_drop_link_key_for_bd_addr(bd_address); 2665 } 2666 #else 2667 UNUSED(status); 2668 #endif 2669 } 2670 #endif 2671 2672 2673 #ifdef ENABLE_CLASSIC 2674 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2675 // SSP Controller 2676 if (features[6] & (1 << 3)){ 2677 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2678 } 2679 // eSCO 2680 if (features[3] & (1<<7)){ 2681 conn->remote_supported_features[0] |= 1; 2682 } 2683 // Extended features 2684 if (features[7] & (1<<7)){ 2685 conn->remote_supported_features[0] |= 2; 2686 } 2687 // SCO packet types 2688 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2689 } 2690 2691 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2692 // SSP Host 2693 if (features[0] & (1 << 0)){ 2694 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2695 } 2696 // SC Host 2697 if (features[0] & (1 << 3)){ 2698 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2699 } 2700 } 2701 2702 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2703 // SC Controller 2704 if (features[1] & (1 << 0)){ 2705 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2706 } 2707 } 2708 2709 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2710 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2711 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2712 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2713 if (conn->bonding_flags & BONDING_DEDICATED){ 2714 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2715 } 2716 } 2717 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2718 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2719 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2720 } 2721 2722 #endif 2723 2724 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2725 // handle BT initialization 2726 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2727 hci_initializing_event_handler(packet, size); 2728 } 2729 2730 // help with BT sleep 2731 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2732 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2733 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2734 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2735 hci_initializing_next_state(); 2736 } 2737 } 2738 2739 #ifdef ENABLE_CLASSIC 2740 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2741 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2742 conn->requested_security_level = LEVEL_0; 2743 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2744 hci_emit_security_level(conn->con_handle, security_level); 2745 2746 // dedicated bonding 2747 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2748 conn->bonding_flags &= ~BONDING_DEDICATED; 2749 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2750 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2751 // emit dedicated bonding complete, don't disconnect 2752 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2753 #else 2754 // request disconnect, event is emitted after disconnect 2755 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2756 #endif 2757 } 2758 } 2759 2760 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2761 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2762 conn->encryption_key_size = encryption_key_size; 2763 2764 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2765 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2766 hci_handle_mutual_authentication_completed(conn); 2767 } else { 2768 // otherwise trigger remote feature request and send authentication request 2769 hci_trigger_remote_features_for_connection(conn); 2770 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2771 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2772 } 2773 } 2774 } 2775 #endif 2776 2777 static void hci_store_local_supported_commands(const uint8_t * packet){ 2778 // create mapping table 2779 #define X(name, offset, bit) { offset, bit }, 2780 static struct { 2781 uint8_t byte_offset; 2782 uint8_t bit_position; 2783 } supported_hci_commands_map [] = { 2784 SUPPORTED_HCI_COMMANDS 2785 }; 2786 #undef X 2787 2788 // create names for debug purposes 2789 #ifdef ENABLE_LOG_DEBUG 2790 #define X(name, offset, bit) #name, 2791 static const char * command_names[] = { 2792 SUPPORTED_HCI_COMMANDS 2793 }; 2794 #undef X 2795 #endif 2796 2797 hci_stack->local_supported_commands = 0; 2798 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2799 uint16_t i; 2800 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2801 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2802 #ifdef ENABLE_LOG_DEBUG 2803 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); 2804 #else 2805 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2806 #endif 2807 hci_stack->local_supported_commands |= (1LU << i); 2808 } 2809 } 2810 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2811 } 2812 2813 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2814 UNUSED(size); 2815 2816 uint8_t status = 0; 2817 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2818 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2819 } 2820 uint16_t manufacturer; 2821 #ifdef ENABLE_CLASSIC 2822 hci_connection_t * conn; 2823 #endif 2824 #if defined(ENABLE_CLASSIC) 2825 hci_con_handle_t handle; 2826 #endif 2827 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2828 le_audio_cig_t * cig; 2829 #endif 2830 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2831 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2832 #endif 2833 2834 // get num cmd packets - limit to 1 to reduce complexity 2835 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2836 2837 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2838 switch (opcode){ 2839 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2840 if (status) break; 2841 // terminate, name 248 chars 2842 packet[6+248] = 0; 2843 log_info("local name: %s", &packet[6]); 2844 break; 2845 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2846 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2847 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2848 uint16_t acl_len = little_endian_read_16(packet, 6); 2849 uint16_t sco_len = packet[8]; 2850 2851 // determine usable ACL/SCO payload size 2852 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2853 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2854 2855 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2856 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2857 2858 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2859 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2860 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2861 } 2862 break; 2863 case HCI_OPCODE_HCI_READ_RSSI: 2864 if (status == ERROR_CODE_SUCCESS){ 2865 uint8_t event[5]; 2866 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2867 event[1] = 3; 2868 (void)memcpy(&event[2], &packet[6], 3); 2869 hci_emit_btstack_event(event, sizeof(event), 1); 2870 } 2871 break; 2872 #ifdef ENABLE_BLE 2873 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2874 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2875 hci_stack->le_iso_packets_total_num = packet[11]; 2876 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2877 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2878 2879 /* fall through */ 2880 2881 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2882 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2883 hci_stack->le_acl_packets_total_num = packet[8]; 2884 // determine usable ACL payload size 2885 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2886 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2887 } 2888 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); 2889 break; 2890 #endif 2891 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2892 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2893 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2894 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2895 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); 2896 break; 2897 #endif 2898 #ifdef ENABLE_LE_CENTRAL 2899 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2900 hci_stack->le_whitelist_capacity = packet[6]; 2901 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2902 break; 2903 #endif 2904 #ifdef ENABLE_LE_PERIPHERAL 2905 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2906 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2907 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2908 break; 2909 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2910 if (hci_stack->le_advertising_set_in_current_command != 0) { 2911 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2912 hci_stack->le_advertising_set_in_current_command = 0; 2913 if (advertising_set == NULL) break; 2914 uint8_t adv_status = packet[6]; 2915 uint8_t tx_power = packet[7]; 2916 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 }; 2917 if (adv_status == 0){ 2918 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2919 } 2920 hci_emit_btstack_event(event, sizeof(event), 1); 2921 } 2922 break; 2923 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2924 if (hci_stack->le_advertising_set_in_current_command != 0) { 2925 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2926 hci_stack->le_advertising_set_in_current_command = 0; 2927 if (advertising_set == NULL) break; 2928 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2929 if (status == 0){ 2930 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2931 } 2932 hci_emit_btstack_event(event, sizeof(event), 1); 2933 } 2934 break; 2935 #endif 2936 #endif 2937 case HCI_OPCODE_HCI_READ_BD_ADDR: 2938 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2939 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2940 #ifdef ENABLE_CLASSIC 2941 if (hci_stack->link_key_db){ 2942 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2943 } 2944 #endif 2945 break; 2946 #ifdef ENABLE_CLASSIC 2947 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2948 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2949 break; 2950 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2951 if (status == ERROR_CODE_SUCCESS) { 2952 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2953 } else { 2954 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2955 } 2956 break; 2957 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2958 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2959 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2960 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2961 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2962 hci_emit_btstack_event(event, sizeof(event), 1); 2963 } 2964 break; 2965 #endif 2966 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2967 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2968 2969 #ifdef ENABLE_CLASSIC 2970 // determine usable ACL packet types based on host buffer size and supported features 2971 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]); 2972 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2973 // determine usable SCO packet types based on supported features 2974 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2975 &hci_stack->local_supported_features[0]); 2976 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2977 #endif 2978 // Classic/LE 2979 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2980 break; 2981 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2982 manufacturer = little_endian_read_16(packet, 10); 2983 // map Cypress & Infineon to Broadcom 2984 switch (manufacturer){ 2985 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2986 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2987 log_info("Treat Cypress/Infineon as Broadcom"); 2988 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2989 little_endian_store_16(packet, 10, manufacturer); 2990 break; 2991 default: 2992 break; 2993 } 2994 hci_stack->manufacturer = manufacturer; 2995 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2996 break; 2997 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2998 hci_store_local_supported_commands(packet); 2999 break; 3000 #ifdef ENABLE_CLASSIC 3001 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 3002 if (status) return; 3003 hci_stack->synchronous_flow_control_enabled = 1; 3004 break; 3005 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 3006 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 3007 conn = hci_connection_for_handle(handle); 3008 if (conn != NULL) { 3009 uint8_t key_size = 0; 3010 if (status == 0){ 3011 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 3012 log_info("Handle %04x key Size: %u", handle, key_size); 3013 } else { 3014 key_size = 1; 3015 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3016 } 3017 hci_handle_read_encryption_key_size_complete(conn, key_size); 3018 } 3019 break; 3020 // assert pairing complete event is emitted. 3021 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3022 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3023 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3024 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3025 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3026 // lookup connection by gap pairing addr 3027 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3028 if (conn == NULL) break; 3029 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3030 break; 3031 3032 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3033 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3034 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3035 uint8_t event[67]; 3036 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3037 event[1] = 65; 3038 (void)memset(&event[2], 0, 65); 3039 if (status == ERROR_CODE_SUCCESS){ 3040 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3041 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3042 event[2] = 3; 3043 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3044 } else { 3045 event[2] = 1; 3046 } 3047 } 3048 hci_emit_btstack_event(event, sizeof(event), 0); 3049 break; 3050 } 3051 3052 // note: only needed if user does not provide OOB data 3053 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3054 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3055 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3056 if (conn == NULL) break; 3057 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3058 break; 3059 #endif 3060 #endif 3061 #ifdef ENABLE_BLE 3062 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3063 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3064 // lookup CIG 3065 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3066 if (cig != NULL){ 3067 uint8_t i = 0; 3068 if (status == ERROR_CODE_SUCCESS){ 3069 // assign CIS handles to pre-allocated CIS 3070 btstack_linked_list_iterator_t it; 3071 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3072 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3073 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3074 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3075 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3076 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3077 iso_stream->cis_handle = cis_handle; 3078 cig->cis_con_handles[i] = cis_handle; 3079 i++; 3080 } 3081 } 3082 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3083 hci_emit_cig_created(cig, status); 3084 } else { 3085 hci_emit_cig_created(cig, status); 3086 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3087 } 3088 } 3089 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3090 break; 3091 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3092 if (status != ERROR_CODE_SUCCESS){ 3093 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3094 } 3095 break; 3096 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3097 if (status != ERROR_CODE_SUCCESS){ 3098 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3099 } 3100 break; 3101 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3102 // lookup BIG by state 3103 btstack_linked_list_iterator_t it; 3104 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3105 while (btstack_linked_list_iterator_has_next(&it)) { 3106 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3107 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3108 if (status == ERROR_CODE_SUCCESS){ 3109 big->state_vars.next_bis++; 3110 if (big->state_vars.next_bis == big->num_bis){ 3111 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3112 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3113 } else { 3114 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3115 } 3116 } else { 3117 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3118 big->state_vars.status = status; 3119 } 3120 return; 3121 } 3122 } 3123 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3124 while (btstack_linked_list_iterator_has_next(&it)) { 3125 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3126 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3127 if (status == ERROR_CODE_SUCCESS){ 3128 big_sync->state_vars.next_bis++; 3129 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3130 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3131 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3132 } else { 3133 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3134 } 3135 } else { 3136 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3137 big_sync->state_vars.status = status; 3138 } 3139 return; 3140 } 3141 } 3142 // Lookup CIS via active group operation 3143 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3144 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3145 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3146 3147 // lookup CIS by state 3148 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3149 while (btstack_linked_list_iterator_has_next(&it)){ 3150 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3151 bool emit_cis_created = false; 3152 switch (iso_stream->state){ 3153 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3154 if (status != ERROR_CODE_SUCCESS){ 3155 emit_cis_created = true; 3156 break; 3157 } 3158 if (iso_stream->max_sdu_c_to_p > 0){ 3159 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3160 } else { 3161 emit_cis_created = true; 3162 } 3163 break; 3164 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3165 emit_cis_created = true; 3166 break; 3167 default: 3168 break; 3169 } 3170 if (emit_cis_created){ 3171 hci_cis_handle_created(iso_stream, status); 3172 } 3173 } 3174 } else { 3175 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3176 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3177 if (cig != NULL) { 3178 // emit cis created if all ISO Paths have been created 3179 // assume we are central 3180 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3181 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3182 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3183 // if outgoing has been setup, or incoming was setup but outgoing not required 3184 if ((cis_direction == 1) || (outgoing_needed == false)){ 3185 // lookup iso stream by cig/cis 3186 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3187 while (btstack_linked_list_iterator_has_next(&it)) { 3188 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3189 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3190 hci_cis_handle_created(iso_stream, status); 3191 } 3192 } 3193 } 3194 // next state 3195 cig->state_vars.next_cis++; 3196 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3197 } 3198 } 3199 } 3200 break; 3201 } 3202 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3203 // lookup BIG by state 3204 btstack_linked_list_iterator_t it; 3205 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3206 while (btstack_linked_list_iterator_has_next(&it)) { 3207 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3208 uint8_t big_handle = big_sync->big_handle; 3209 switch (big_sync->state){ 3210 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3211 btstack_linked_list_iterator_remove(&it); 3212 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3213 return; 3214 default: 3215 btstack_linked_list_iterator_remove(&it); 3216 hci_emit_big_sync_stopped(big_handle); 3217 return; 3218 } 3219 } 3220 break; 3221 } 3222 #endif 3223 #endif 3224 default: 3225 break; 3226 } 3227 } 3228 3229 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3230 static void 3231 hci_iso_create_big_failed(const le_audio_big_t *big, uint8_t status) { 3232 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 3233 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3234 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3235 hci_emit_big_created(big, status); 3236 } else { 3237 hci_emit_big_terminated(big); 3238 } 3239 } 3240 3241 static void hci_iso_big_sync_failed(const le_audio_big_sync_t *big_sync, uint8_t status) { 3242 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3243 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3244 hci_emit_big_sync_created(big_sync, status); 3245 } else { 3246 hci_emit_big_sync_stopped(big_sync->big_handle); 3247 } 3248 } 3249 #endif 3250 3251 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3252 UNUSED(size); 3253 3254 // get num cmd packets - limit to 1 to reduce complexity 3255 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3256 3257 // get opcode and command status 3258 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3259 3260 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3261 uint8_t status = hci_event_command_status_get_status(packet); 3262 #endif 3263 3264 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3265 bd_addr_type_t addr_type; 3266 bd_addr_t addr; 3267 #endif 3268 3269 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3270 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3271 #endif 3272 3273 switch (opcode){ 3274 #ifdef ENABLE_CLASSIC 3275 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3276 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3277 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3278 #endif 3279 #ifdef ENABLE_LE_CENTRAL 3280 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3281 #endif 3282 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3283 addr_type = hci_stack->outgoing_addr_type; 3284 memcpy(addr, hci_stack->outgoing_addr, 6); 3285 3286 // reset outgoing address info 3287 memset(hci_stack->outgoing_addr, 0, 6); 3288 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3289 3290 // on error 3291 if (status != ERROR_CODE_SUCCESS){ 3292 #ifdef ENABLE_LE_CENTRAL 3293 if (hci_is_le_connection_type(addr_type)){ 3294 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3295 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3296 } 3297 #endif 3298 // error => outgoing connection failed 3299 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3300 if (conn != NULL){ 3301 hci_handle_connection_failed(conn, status); 3302 } 3303 } 3304 break; 3305 #endif 3306 #ifdef ENABLE_CLASSIC 3307 case HCI_OPCODE_HCI_INQUIRY: 3308 if (status == ERROR_CODE_SUCCESS) { 3309 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3310 } else { 3311 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3312 } 3313 break; 3314 #endif 3315 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3316 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3317 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3318 if (status == ERROR_CODE_SUCCESS){ 3319 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3320 } else { 3321 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3322 } 3323 break; 3324 case HCI_OPCODE_HCI_LE_CREATE_BIG: 3325 if (status != ERROR_CODE_SUCCESS){ 3326 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3327 // get current big 3328 le_audio_big_t * big = hci_big_for_handle(hci_stack->iso_active_operation_group_id); 3329 if (big != NULL){ 3330 hci_iso_create_big_failed(big, status); 3331 } 3332 } 3333 break; 3334 case HCI_OPCODE_HCI_LE_BIG_CREATE_SYNC: 3335 if (status != ERROR_CODE_SUCCESS){ 3336 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3337 // get current big sync 3338 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(hci_stack->iso_active_operation_group_id); 3339 if (big_sync != NULL){ 3340 hci_iso_big_sync_failed(big_sync, status); 3341 } 3342 } 3343 break; 3344 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3345 default: 3346 break; 3347 } 3348 } 3349 3350 #ifdef ENABLE_BLE 3351 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3352 gap_event[0] = HCI_EVENT_META_GAP; 3353 gap_event[1] = 36 - 2; 3354 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3355 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3356 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3357 memcpy(&gap_event[3], &hci_event[3], 11); 3358 memset(&gap_event[14], 0, 12); 3359 memcpy(&gap_event[26], &hci_event[14], 7); 3360 memset(&gap_event[33], 0xff, 3); 3361 // Some Controllers incorrectly report a resolved identity address in HCI_SUBEVENT_LE_CONNECTION_COMPLETE. 3362 // If an address is resolved, we're working with it, but this event does not provide it. 3363 // As a workaround, we map identity addresses to regular addresses. 3364 gap_event[7] = gap_event[7] & 1; 3365 break; 3366 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3367 memcpy(&gap_event[3], &hci_event[3], 30); 3368 memset(&gap_event[33], 0xff, 3); 3369 break; 3370 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3371 memcpy(&gap_event[3], &hci_event[3], 33); 3372 break; 3373 default: 3374 btstack_unreachable(); 3375 break; 3376 } 3377 } 3378 3379 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3380 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3381 uint8_t gap_event[36]; 3382 hci_create_gap_connection_complete_event(hci_event, gap_event); 3383 3384 // read fields 3385 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3386 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3387 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3388 3389 // Connection management 3390 bd_addr_t addr; 3391 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3392 bd_addr_type_t addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3393 hci_con_handle_t con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3394 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3395 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3396 3397 #ifdef ENABLE_LE_CENTRAL 3398 // handle error: error is reported only to the initiator -> outgoing connection 3399 if (status){ 3400 3401 // handle cancelled outgoing connection 3402 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3403 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3404 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3405 bool connection_was_cancelled = false; 3406 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3407 connection_was_cancelled = true; 3408 // reset state 3409 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3410 // get outgoing connection conn struct for direct connect 3411 conn = gap_get_outgoing_le_connection(); 3412 // prepare restart if still active 3413 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3414 conn->state = SEND_CREATE_CONNECTION; 3415 } 3416 } 3417 3418 // free connection if cancelled by user (request == IDLE) 3419 bool cancelled_by_user = hci_stack->le_connecting_request == LE_CONNECTING_IDLE; 3420 if ((conn != NULL) && cancelled_by_user){ 3421 // remove entry 3422 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3423 btstack_memory_hci_connection_free( conn ); 3424 } 3425 3426 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for: 3427 // - outgoing error not caused by connection cancel 3428 // - connection cancelled by user 3429 // by this, no event is emitted for intermediate connection cancel required filterlist modification 3430 if ((connection_was_cancelled == false) || cancelled_by_user){ 3431 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3432 } 3433 return; 3434 } 3435 #endif 3436 3437 // on success, both hosts receive connection complete event 3438 if (role == HCI_ROLE_MASTER){ 3439 #ifdef ENABLE_LE_CENTRAL 3440 // if we're master, it was an outgoing connection 3441 // note: no hci_connection_t object exists yet for connect with whitelist 3442 3443 // if an identity addresses was used without enhanced connection complete event, 3444 // the connection complete event contains the current random address of the peer device. 3445 // This random address is needed in the case of a re-pairing 3446 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3447 conn = gap_get_outgoing_le_connection(); 3448 // if outgoing connection object is available, check if identity address was used. 3449 // if yes, track resolved random address and provide rpa 3450 // note: we don't update hci le subevent connection complete 3451 if (conn != NULL){ 3452 if (hci_is_le_identity_address_type(conn->address_type)){ 3453 memcpy(&gap_event[20], &gap_event[8], 6); 3454 gap_event[7] = conn->address_type; 3455 reverse_bd_addr(conn->address, &gap_event[8]); 3456 } 3457 } 3458 } 3459 3460 // we're done with it 3461 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3462 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3463 #endif 3464 } else { 3465 #ifdef ENABLE_LE_PERIPHERAL 3466 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3467 if (hci_le_extended_advertising_supported()) { 3468 // advertisement state managed with HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED 3469 3470 // if advertisement set terminated event arrives before connection complete, connection struct has been prepared 3471 // set missing peer address + address type 3472 conn = hci_connection_for_handle(con_handle); 3473 if (conn != NULL){ 3474 memcpy(conn->address, addr, 6); 3475 conn->address_type = addr_type; 3476 } 3477 } 3478 else 3479 #endif 3480 { 3481 // if we're slave, it was an incoming connection and advertisements have stopped 3482 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3483 } 3484 #endif 3485 } 3486 3487 // LE connections are auto-accepted, so just create a connection if there isn't one already 3488 if (!conn){ 3489 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3490 } 3491 3492 // no memory, sorry. 3493 if (!conn){ 3494 return; 3495 } 3496 3497 conn->state = OPEN; 3498 conn->con_handle = con_handle; 3499 conn->le_connection_interval = conn_interval; 3500 3501 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3502 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3503 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3504 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3505 } 3506 #endif 3507 3508 #ifdef ENABLE_LE_PERIPHERAL 3509 if (role == HCI_ROLE_SLAVE){ 3510 hci_update_advertisements_enabled_for_current_roles(); 3511 } 3512 #endif 3513 3514 // init unenhanced att bearer mtu 3515 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3516 conn->att_connection.mtu_exchanged = false; 3517 3518 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3519 3520 // restart timer 3521 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3522 // btstack_run_loop_add_timer(&conn->timeout); 3523 3524 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3525 3526 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3527 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3528 3529 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3530 hci_emit_nr_connections_changed(); 3531 } 3532 #endif 3533 3534 #ifdef ENABLE_CLASSIC 3535 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){ 3536 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3537 // LEVEL_4 is tested by l2cap 3538 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3539 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3540 if (level >= LEVEL_3){ 3541 // MITM not possible without keyboard or display 3542 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3543 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3544 3545 // MITM possible if one side has keyboard and the other has keyboard or display 3546 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3547 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3548 3549 // MITM not possible if one side has only display and other side has no keyboard 3550 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3551 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3552 } 3553 // LEVEL 2 requires SSP, which is a given 3554 return true; 3555 } 3556 3557 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3558 // get requested security level 3559 gap_security_level_t requested_security_level = conn->requested_security_level; 3560 if (hci_stack->gap_secure_connections_only_mode){ 3561 requested_security_level = LEVEL_4; 3562 } 3563 3564 // assess security: LEVEL 4 requires SC 3565 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3566 if ((requested_security_level == LEVEL_4) && 3567 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3568 !hci_remote_sc_enabled(conn)){ 3569 log_info("Level 4 required, but SC not supported -> abort"); 3570 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3571 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3572 return; 3573 } 3574 3575 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3576 // - GAP/MOD/NBON/BV-02-C 3577 // - GAP/DM/NBON/BV-01-C 3578 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3579 switch (conn->io_cap_response_auth_req){ 3580 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3581 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3582 if (hci_stack->bondable == false){ 3583 log_info("Dedicated vs. non-bondable -> abort"); 3584 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3585 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3586 return; 3587 } 3588 default: 3589 break; 3590 } 3591 } 3592 3593 // assess security based on io capabilities 3594 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3595 // responder: fully validate io caps of both sides as well as OOB data 3596 bool security_possible = false; 3597 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3598 3599 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3600 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3601 // so we merge the OOB data availability 3602 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3603 if (conn->classic_oob_c_192 != NULL){ 3604 have_oob_data |= 1; 3605 } 3606 if (conn->classic_oob_c_256 != NULL){ 3607 have_oob_data |= 2; 3608 } 3609 // for up to Level 3, either P-192 as well as P-256 will do 3610 // 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 3611 // if remote does not SC, we should not receive P-256 data either 3612 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3613 security_possible = true; 3614 } 3615 // for Level 4, P-256 is needed 3616 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3617 security_possible = true; 3618 } 3619 #endif 3620 3621 if (security_possible == false){ 3622 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3623 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3624 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3625 return; 3626 } 3627 } else { 3628 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3629 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3630 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3631 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3632 log_info("Level 3+ required, but no input/output -> abort"); 3633 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3634 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3635 return; 3636 } 3637 #endif 3638 #endif 3639 } 3640 3641 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3642 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3643 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3644 } else { 3645 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3646 } 3647 #endif 3648 } 3649 3650 #endif 3651 3652 static void event_handler(uint8_t *packet, uint16_t size){ 3653 3654 uint16_t event_length = packet[1]; 3655 3656 // assert packet is complete 3657 if (size != (event_length + 2u)){ 3658 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3659 return; 3660 } 3661 3662 hci_con_handle_t handle; 3663 hci_connection_t * conn; 3664 int i; 3665 3666 #ifdef ENABLE_CLASSIC 3667 hci_link_type_t link_type; 3668 bd_addr_t addr; 3669 bd_addr_type_t addr_type; 3670 #endif 3671 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3672 hci_iso_stream_t * iso_stream; 3673 le_audio_big_t * big; 3674 le_audio_big_sync_t * big_sync; 3675 #endif 3676 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3677 btstack_linked_list_iterator_t it; 3678 #endif 3679 #if defined(ENABLE_LE_EXTENDED_ADVERTISING) && defined(ENABLE_LE_CENTRAL) 3680 uint8_t advertising_handle; 3681 #endif 3682 3683 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3684 3685 switch (hci_event_packet_get_type(packet)) { 3686 3687 case HCI_EVENT_COMMAND_COMPLETE: 3688 handle_command_complete_event(packet, size); 3689 break; 3690 3691 case HCI_EVENT_COMMAND_STATUS: 3692 handle_command_status_event(packet, size); 3693 break; 3694 3695 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3696 if (size < 3) return; 3697 uint16_t num_handles = packet[2]; 3698 if (size != (3u + num_handles * 4u)) return; 3699 #ifdef ENABLE_CLASSIC 3700 bool notify_sco = false; 3701 #endif 3702 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3703 bool notify_iso = false; 3704 #endif 3705 uint16_t offset = 3; 3706 for (i=0; i<num_handles;i++){ 3707 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3708 offset += 2u; 3709 uint16_t num_packets = little_endian_read_16(packet, offset); 3710 offset += 2u; 3711 3712 conn = hci_connection_for_handle(handle); 3713 if (conn != NULL) { 3714 3715 if (conn->num_packets_sent >= num_packets) { 3716 conn->num_packets_sent -= num_packets; 3717 } else { 3718 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3719 conn->num_packets_sent = 0; 3720 } 3721 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3722 #ifdef ENABLE_CLASSIC 3723 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3724 notify_sco = true; 3725 } 3726 #endif 3727 } 3728 3729 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3730 hci_controller_dump_packets(); 3731 #endif 3732 3733 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3734 if (conn == NULL){ 3735 iso_stream = hci_iso_stream_for_con_handle(handle); 3736 if (iso_stream != NULL){ 3737 if (iso_stream->num_packets_sent >= num_packets) { 3738 iso_stream->num_packets_sent -= num_packets; 3739 } else { 3740 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3741 iso_stream->num_packets_sent = 0; 3742 } 3743 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3744 big = hci_big_for_handle(iso_stream->group_id); 3745 if (big != NULL){ 3746 big->num_completed_timestamp_current_valid = true; 3747 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3748 } 3749 } 3750 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3751 num_packets, handle, iso_stream->num_packets_sent); 3752 notify_iso = true; 3753 } 3754 } 3755 #endif 3756 } 3757 3758 #ifdef ENABLE_CLASSIC 3759 if (notify_sco){ 3760 hci_notify_if_sco_can_send_now(); 3761 } 3762 #endif 3763 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3764 if (notify_iso){ 3765 hci_iso_notify_can_send_now(); 3766 } 3767 #endif 3768 break; 3769 } 3770 3771 #ifdef ENABLE_CLASSIC 3772 case HCI_EVENT_FLUSH_OCCURRED: 3773 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3774 handle = hci_event_flush_occurred_get_handle(packet); 3775 conn = hci_connection_for_handle(handle); 3776 if (conn) { 3777 log_info("Flush occurred, disconnect 0x%04x", handle); 3778 conn->state = SEND_DISCONNECT; 3779 } 3780 break; 3781 3782 case HCI_EVENT_INQUIRY_COMPLETE: 3783 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3784 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3785 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3786 hci_emit_btstack_event(event, sizeof(event), 1); 3787 } 3788 break; 3789 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3790 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3791 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3792 } 3793 break; 3794 case HCI_EVENT_CONNECTION_REQUEST: 3795 reverse_bd_addr(&packet[2], addr); 3796 link_type = (hci_link_type_t) packet[11]; 3797 3798 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3799 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3800 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3801 bd_addr_copy(hci_stack->decline_addr, addr); 3802 break; 3803 } 3804 3805 if (hci_stack->gap_classic_accept_callback != NULL){ 3806 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3807 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3808 bd_addr_copy(hci_stack->decline_addr, addr); 3809 break; 3810 } 3811 } 3812 3813 // TODO: eval COD 8-10 3814 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3815 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3816 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3817 if (!conn) { 3818 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3819 } 3820 if (!conn) { 3821 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3822 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3823 bd_addr_copy(hci_stack->decline_addr, addr); 3824 hci_run(); 3825 // avoid event to higher layer 3826 return; 3827 } 3828 conn->state = RECEIVED_CONNECTION_REQUEST; 3829 // store info about eSCO 3830 if (link_type == HCI_LINK_TYPE_ESCO){ 3831 conn->remote_supported_features[0] |= 1; 3832 } 3833 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3834 if (addr_type == BD_ADDR_TYPE_SCO){ 3835 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3836 // ACL exists unless fuzzing 3837 if (acl_conn != NULL) { 3838 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3839 } 3840 } 3841 hci_run(); 3842 break; 3843 3844 case HCI_EVENT_CONNECTION_COMPLETE: 3845 // Connection management 3846 reverse_bd_addr(&packet[5], addr); 3847 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3848 addr_type = BD_ADDR_TYPE_ACL; 3849 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3850 if (conn) { 3851 switch (conn->state){ 3852 // expected states 3853 case ACCEPTED_CONNECTION_REQUEST: 3854 case SENT_CREATE_CONNECTION: 3855 break; 3856 // unexpected state -> ignore 3857 default: 3858 // don't forward event to app 3859 return; 3860 } 3861 if (!packet[2]){ 3862 conn->state = OPEN; 3863 conn->con_handle = little_endian_read_16(packet, 3); 3864 3865 // trigger write supervision timeout if we're master 3866 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3867 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3868 } 3869 3870 // trigger write automatic flush timeout 3871 if (hci_stack->automatic_flush_timeout != 0){ 3872 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3873 } 3874 3875 // restart timer 3876 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3877 btstack_run_loop_add_timer(&conn->timeout); 3878 3879 // trigger remote features for dedicated bonding 3880 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3881 hci_trigger_remote_features_for_connection(conn); 3882 } 3883 3884 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3885 3886 hci_emit_nr_connections_changed(); 3887 } else { 3888 // connection failed 3889 hci_handle_connection_failed(conn, packet[2]); 3890 } 3891 } 3892 break; 3893 3894 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3895 reverse_bd_addr(&packet[5], addr); 3896 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3897 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3898 3899 // SCO exists unless fuzzer 3900 if (conn == NULL) break; 3901 3902 if (packet[2] != ERROR_CODE_SUCCESS){ 3903 // connection failed, remove entry 3904 hci_handle_connection_failed(conn, packet[2]); 3905 break; 3906 } 3907 3908 conn->state = OPEN; 3909 conn->con_handle = little_endian_read_16(packet, 3); 3910 3911 // update sco payload length for eSCO connections 3912 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3913 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3914 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3915 } 3916 3917 #ifdef ENABLE_SCO_OVER_HCI 3918 // update SCO 3919 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3920 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3921 } 3922 // trigger can send now 3923 if (hci_have_usb_transport()){ 3924 hci_stack->sco_can_send_now = true; 3925 } 3926 3927 // setup implicit sco flow control 3928 conn->sco_tx_ready = 0; 3929 conn->sco_tx_active = 0; 3930 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3931 3932 #endif 3933 #ifdef HAVE_SCO_TRANSPORT 3934 // configure sco transport 3935 if (hci_stack->sco_transport != NULL){ 3936 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3937 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3938 } 3939 #endif 3940 break; 3941 3942 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3943 handle = little_endian_read_16(packet, 3); 3944 conn = hci_connection_for_handle(handle); 3945 if (!conn) break; 3946 if (!packet[2]){ 3947 const uint8_t * features = &packet[5]; 3948 hci_handle_remote_features_page_0(conn, features); 3949 3950 // read extended features if possible 3951 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3952 && ((conn->remote_supported_features[0] & 2) != 0)) { 3953 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3954 break; 3955 } 3956 } 3957 hci_handle_remote_features_received(conn); 3958 break; 3959 3960 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3961 handle = little_endian_read_16(packet, 3); 3962 conn = hci_connection_for_handle(handle); 3963 if (!conn) break; 3964 // status = ok, page = 1 3965 if (!packet[2]) { 3966 uint8_t page_number = packet[5]; 3967 uint8_t maximum_page_number = packet[6]; 3968 const uint8_t * features = &packet[7]; 3969 bool done = false; 3970 switch (page_number){ 3971 case 1: 3972 hci_handle_remote_features_page_1(conn, features); 3973 if (maximum_page_number >= 2){ 3974 // get Secure Connections (Controller) from Page 2 if available 3975 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3976 } else { 3977 // otherwise, assume SC (Controller) == SC (Host) 3978 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3979 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3980 } 3981 done = true; 3982 } 3983 break; 3984 case 2: 3985 hci_handle_remote_features_page_2(conn, features); 3986 done = true; 3987 break; 3988 default: 3989 break; 3990 } 3991 if (!done) break; 3992 } 3993 hci_handle_remote_features_received(conn); 3994 break; 3995 3996 case HCI_EVENT_LINK_KEY_REQUEST: 3997 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3998 hci_event_link_key_request_get_bd_addr(packet, addr); 3999 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4000 if (!conn) break; 4001 4002 // lookup link key in db if not cached 4003 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 4004 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 4005 } 4006 4007 // response sent by hci_run() 4008 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 4009 #endif 4010 break; 4011 4012 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 4013 hci_event_link_key_request_get_bd_addr(packet, addr); 4014 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4015 if (!conn) break; 4016 4017 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 4018 4019 // CVE-2020-26555: ignore NULL link key 4020 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 4021 if (btstack_is_null(&packet[8], 16)) break; 4022 4023 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 4024 // Change Connection Encryption keeps link key type 4025 if (link_key_type != CHANGED_COMBINATION_KEY){ 4026 conn->link_key_type = link_key_type; 4027 } 4028 4029 // cache link key. link keys stored in little-endian format for legacy reasons 4030 memcpy(&conn->link_key, &packet[8], 16); 4031 4032 // only store link key: 4033 // - if bondable enabled 4034 if (hci_stack->bondable == false) break; 4035 // - if at least one side requests bonding during the IO Capabilities exchange. 4036 // Note: we drop bonding flag in acceptor role if remote doesn't request it 4037 bool bonding_local = conn->io_cap_request_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 4038 bool bonding_remote = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 4039 if ((bonding_local == false) && (bonding_remote == false)) break; 4040 // - if security level sufficient 4041 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 4042 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 4043 break; 4044 } 4045 4046 case HCI_EVENT_PIN_CODE_REQUEST: 4047 hci_event_pin_code_request_get_bd_addr(packet, addr); 4048 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4049 if (!conn) break; 4050 4051 hci_pairing_started(conn, false); 4052 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 4053 if (!hci_stack->bondable ){ 4054 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4055 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 4056 hci_run(); 4057 return; 4058 } 4059 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 4060 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 4061 log_info("Level 4 required, but SC not supported -> abort"); 4062 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4063 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4064 hci_run(); 4065 return; 4066 } 4067 break; 4068 4069 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 4070 hci_event_io_capability_response_get_bd_addr(packet, addr); 4071 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4072 if (!conn) break; 4073 4074 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 4075 hci_pairing_started(conn, true); 4076 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 4077 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 4078 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4079 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 4080 #endif 4081 break; 4082 4083 case HCI_EVENT_IO_CAPABILITY_REQUEST: 4084 hci_event_io_capability_response_get_bd_addr(packet, addr); 4085 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4086 if (!conn) break; 4087 4088 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4089 hci_connection_timestamp(conn); 4090 hci_pairing_started(conn, true); 4091 break; 4092 4093 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4094 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4095 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4096 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4097 if (!conn) break; 4098 4099 hci_connection_timestamp(conn); 4100 4101 hci_pairing_started(conn, true); 4102 4103 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4104 break; 4105 #endif 4106 4107 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4108 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4109 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4110 if (!conn) break; 4111 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4112 if (hci_stack->ssp_auto_accept){ 4113 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4114 }; 4115 } else { 4116 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4117 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4118 // don't forward event to app 4119 hci_run(); 4120 return; 4121 } 4122 break; 4123 4124 case HCI_EVENT_USER_PASSKEY_REQUEST: 4125 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4126 if (hci_stack->ssp_auto_accept){ 4127 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4128 }; 4129 break; 4130 4131 case HCI_EVENT_MODE_CHANGE: 4132 handle = hci_event_mode_change_get_handle(packet); 4133 conn = hci_connection_for_handle(handle); 4134 if (!conn) break; 4135 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4136 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4137 break; 4138 #endif 4139 4140 case HCI_EVENT_ENCRYPTION_CHANGE: 4141 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4142 handle = hci_event_encryption_change_get_connection_handle(packet); 4143 conn = hci_connection_for_handle(handle); 4144 if (!conn) break; 4145 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4146 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4147 if (encryption_enabled){ 4148 if (hci_is_le_connection(conn)){ 4149 // For LE, we accept connection as encrypted 4150 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4151 } 4152 #ifdef ENABLE_CLASSIC 4153 else { 4154 4155 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4156 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4157 bool connected_uses_aes_ccm = encryption_enabled == 2; 4158 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4159 #ifdef ENABLE_TESTING_SUPPORT 4160 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4161 // - GAP/SEC/SEM/BI-31-C 4162 // - GAP/SEC/SEM/BI-32-C 4163 // - GAP/SEC/SEM/BI-33-C 4164 4165 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4166 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4167 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4168 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4169 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4170 } 4171 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4172 conn->link_key_type, new_link_key_type); 4173 conn->link_key_type = new_link_key_type; 4174 #else 4175 log_info("SC during pairing, but only E0 now -> abort"); 4176 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4177 break; 4178 #endif 4179 } 4180 4181 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4182 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4183 if (connected_uses_aes_ccm){ 4184 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4185 } 4186 #else 4187 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4188 // with encryption key size > hci_stack->gap_required_encryption_key_size 4189 // for all operations that require any security. See BIAS attacks. 4190 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4191 #endif 4192 // validate encryption key size 4193 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4194 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4195 // already got encryption key size 4196 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4197 } else { 4198 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4199 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4200 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4201 } else { 4202 // if not, pretend everything is perfect 4203 hci_handle_read_encryption_key_size_complete(conn, 16); 4204 } 4205 } 4206 } 4207 #endif 4208 } else { 4209 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4210 } 4211 } else { 4212 #ifdef ENABLE_CLASSIC 4213 if (!hci_is_le_connection(conn)){ 4214 uint8_t status = hci_event_encryption_change_get_status(packet); 4215 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4216 conn->bonding_flags &= ~BONDING_DEDICATED; 4217 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4218 conn->bonding_status = status; 4219 } 4220 // trigger security update -> level 0 4221 hci_handle_mutual_authentication_completed(conn); 4222 } 4223 #endif 4224 } 4225 4226 break; 4227 4228 #ifdef ENABLE_CLASSIC 4229 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4230 handle = hci_event_authentication_complete_get_connection_handle(packet); 4231 conn = hci_connection_for_handle(handle); 4232 if (!conn) break; 4233 4234 // clear authentication active flag 4235 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4236 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4237 4238 // authenticated only if auth status == 0 4239 if (hci_event_authentication_complete_get_status(packet) == 0){ 4240 // authenticated 4241 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4242 4243 // If not already encrypted, start encryption 4244 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4245 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4246 break; 4247 } 4248 } 4249 4250 // emit updated security level (will be 0 if not authenticated) 4251 hci_handle_mutual_authentication_completed(conn); 4252 break; 4253 4254 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4255 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4256 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4257 if (!conn) break; 4258 4259 // treat successfully paired connection as authenticated 4260 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4261 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4262 } 4263 4264 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4265 break; 4266 #endif 4267 4268 // HCI_EVENT_DISCONNECTION_COMPLETE 4269 // has been split, to first notify stack before shutting connection down 4270 // see end of function, too. 4271 case HCI_EVENT_DISCONNECTION_COMPLETE: 4272 if (packet[2]) break; // status != 0 4273 handle = little_endian_read_16(packet, 3); 4274 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4275 if (hci_stack->acl_fragmentation_total_size > 0u) { 4276 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4277 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4278 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4279 hci_stack->acl_fragmentation_total_size = 0; 4280 hci_stack->acl_fragmentation_pos = 0; 4281 if (release_buffer){ 4282 hci_release_packet_buffer(); 4283 } 4284 } 4285 } 4286 4287 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4288 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4289 if (hci_stack->iso_fragmentation_total_size > 0u) { 4290 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4291 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4292 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4293 hci_stack->iso_fragmentation_total_size = 0; 4294 hci_stack->iso_fragmentation_pos = 0; 4295 if (release_buffer){ 4296 hci_release_packet_buffer(); 4297 } 4298 } 4299 } 4300 4301 // finalize iso stream for CIS handle 4302 iso_stream = hci_iso_stream_for_con_handle(handle); 4303 if (iso_stream != NULL){ 4304 hci_iso_stream_finalize(iso_stream); 4305 break; 4306 } 4307 #endif 4308 4309 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4310 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4311 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4312 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4313 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4314 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4315 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4316 hci_stack->num_cmd_packets = 1; 4317 } 4318 #endif 4319 4320 conn = hci_connection_for_handle(handle); 4321 if (!conn) break; 4322 #ifdef ENABLE_CLASSIC 4323 // pairing failed if it was ongoing 4324 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4325 #endif 4326 4327 // emit dedicated bonding event 4328 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4329 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4330 } 4331 4332 // mark connection for shutdown, stop timers, reset state 4333 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4334 hci_connection_stop_timer(conn); 4335 hci_connection_init(conn); 4336 4337 #ifdef ENABLE_BLE 4338 #ifdef ENABLE_LE_PERIPHERAL 4339 // re-enable advertisements for le connections if active 4340 if (hci_is_le_connection(conn)){ 4341 hci_update_advertisements_enabled_for_current_roles(); 4342 } 4343 #endif 4344 #endif 4345 break; 4346 4347 case HCI_EVENT_HARDWARE_ERROR: 4348 log_error("Hardware Error: 0x%02x", packet[2]); 4349 if (hci_stack->hardware_error_callback){ 4350 (*hci_stack->hardware_error_callback)(packet[2]); 4351 } else { 4352 // if no special requests, just reboot stack 4353 hci_power_control_off(); 4354 hci_power_control_on(); 4355 } 4356 break; 4357 4358 #ifdef ENABLE_CLASSIC 4359 case HCI_EVENT_ROLE_CHANGE: 4360 if (packet[2]) break; // status != 0 4361 reverse_bd_addr(&packet[3], addr); 4362 addr_type = BD_ADDR_TYPE_ACL; 4363 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4364 if (!conn) break; 4365 conn->role = (hci_role_t) packet[9]; 4366 break; 4367 #endif 4368 4369 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4370 // release packet buffer only for asynchronous transport and if there are not further fragments 4371 if (hci_transport_synchronous()) { 4372 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4373 return; // instead of break: to avoid re-entering hci_run() 4374 } 4375 hci_stack->acl_fragmentation_tx_active = 0; 4376 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4377 hci_stack->iso_fragmentation_tx_active = 0; 4378 if (hci_stack->iso_fragmentation_total_size) break; 4379 #endif 4380 if (hci_stack->acl_fragmentation_total_size) break; 4381 4382 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4383 hci_stack->hci_packet_buffer_reserved = false; 4384 4385 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4386 hci_iso_notify_can_send_now(); 4387 #endif 4388 // L2CAP receives this event via the hci_emit_event below 4389 4390 #ifdef ENABLE_CLASSIC 4391 // For SCO, we do the can_send_now_check here 4392 hci_notify_if_sco_can_send_now(); 4393 #endif 4394 break; 4395 4396 #ifdef ENABLE_CLASSIC 4397 case HCI_EVENT_SCO_CAN_SEND_NOW: 4398 // For SCO, we do the can_send_now_check here 4399 hci_stack->sco_can_send_now = true; 4400 hci_notify_if_sco_can_send_now(); 4401 return; 4402 4403 // explode inquiry results for easier consumption 4404 case HCI_EVENT_INQUIRY_RESULT: 4405 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4406 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4407 gap_inquiry_explode(packet, size); 4408 break; 4409 #endif 4410 4411 #ifdef ENABLE_BLE 4412 case HCI_EVENT_LE_META: 4413 switch (packet[2]){ 4414 #ifdef ENABLE_LE_CENTRAL 4415 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4416 if (!hci_stack->le_scanning_enabled) break; 4417 le_handle_advertisement_report(packet, size); 4418 break; 4419 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4420 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4421 if (!hci_stack->le_scanning_enabled) break; 4422 le_handle_extended_advertisement_report(packet, size); 4423 break; 4424 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4425 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4426 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4427 break; 4428 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4429 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4430 if (advertising_handle == LE_EXTENDED_ADVERTISING_LEGACY_HANDLE){ 4431 // legacy advertisements 4432 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4433 hci_update_advertisements_enabled_for_current_roles(); 4434 } else { 4435 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4436 while (btstack_linked_list_iterator_has_next(&it)) { 4437 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4438 if (advertising_set->advertising_handle == advertising_handle){ 4439 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4440 } 4441 } 4442 } 4443 // event may come before le connection complete and announces new connection 4444 if (hci_subevent_le_advertising_set_terminated_get_status(packet) == ERROR_CODE_SUCCESS){ 4445 handle = hci_subevent_le_advertising_set_terminated_get_connection_handle(packet); 4446 conn = hci_connection_for_handle(handle); 4447 if (conn == NULL){ 4448 // use placeholder address for peer, will be overwritten in hci_handle_le_connection_complete_event() 4449 bd_addr_t addr; 4450 memset(addr, 0, 6); 4451 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_UNKNOWN, HCI_ROLE_SLAVE); 4452 if (conn != NULL){ 4453 conn->state = ANNOUNCED; 4454 conn->con_handle = handle; 4455 } 4456 } 4457 } 4458 break; 4459 #endif 4460 #endif 4461 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4462 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4463 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4464 hci_handle_le_connection_complete_event(packet); 4465 break; 4466 4467 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4468 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4469 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4470 conn = hci_connection_for_handle(handle); 4471 if (!conn) break; 4472 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4473 break; 4474 4475 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4476 // connection 4477 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4478 conn = hci_connection_for_handle(handle); 4479 if (conn) { 4480 // read arguments 4481 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4482 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4483 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4484 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4485 4486 // validate against current connection parameter range 4487 le_connection_parameter_range_t existing_range; 4488 gap_get_connection_parameter_range(&existing_range); 4489 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4490 if (update_parameter){ 4491 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4492 conn->le_conn_interval_min = le_conn_interval_min; 4493 conn->le_conn_interval_max = le_conn_interval_max; 4494 conn->le_conn_latency = le_conn_latency; 4495 conn->le_supervision_timeout = le_supervision_timeout; 4496 } else { 4497 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4498 } 4499 } 4500 break; 4501 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4502 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4503 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4504 conn = hci_connection_for_handle(handle); 4505 if (conn) { 4506 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4507 } 4508 break; 4509 #endif 4510 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4511 case HCI_SUBEVENT_LE_CIS_REQUEST: 4512 // incoming CIS request, allocate iso stream object and cache metadata 4513 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4514 hci_subevent_le_cis_request_get_cig_id(packet), 4515 hci_subevent_le_cis_request_get_cis_id(packet)); 4516 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4517 if (iso_stream != NULL){ 4518 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4519 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4520 } 4521 break; 4522 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4523 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4524 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4525 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4526 iso_stream = hci_iso_stream_for_con_handle(handle); 4527 btstack_assert(iso_stream != NULL); 4528 // track connection info 4529 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4530 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4531 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4532 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4533 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4534 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4535 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4536 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4537 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4538 // CIS Accept by Peripheral 4539 if (status == ERROR_CODE_SUCCESS){ 4540 if (iso_stream->max_sdu_p_to_c > 0){ 4541 // we're peripheral and we will send data 4542 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4543 } else { 4544 // we're peripheral and we will only receive data 4545 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4546 } 4547 } else { 4548 hci_cis_handle_created(iso_stream, status); 4549 } 4550 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4551 } else { 4552 // CIG Setup by Central 4553 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4554 btstack_assert(cig != NULL); 4555 // update iso stream state 4556 if (status == ERROR_CODE_SUCCESS){ 4557 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4558 } else { 4559 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4560 } 4561 // update cig state 4562 for (i=0;i<cig->num_cis;i++){ 4563 if (cig->cis_con_handles[i] == handle){ 4564 cig->cis_setup_active[i] = false; 4565 if (status == ERROR_CODE_SUCCESS){ 4566 cig->cis_established[i] = true; 4567 } else { 4568 hci_cis_handle_created(iso_stream, status); 4569 } 4570 } 4571 } 4572 4573 // trigger iso path setup if complete 4574 bool cis_setup_active = false; 4575 for (i=0;i<cig->num_cis;i++){ 4576 cis_setup_active |= cig->cis_setup_active[i]; 4577 } 4578 if (cis_setup_active == false){ 4579 cig->state_vars.next_cis = 0; 4580 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4581 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4582 } 4583 } 4584 } 4585 break; 4586 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4587 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4588 big = hci_big_for_handle(packet[4]); 4589 if (big != NULL){ 4590 uint8_t status = packet[3]; 4591 if (status == ERROR_CODE_SUCCESS){ 4592 // store bis_con_handles and trigger iso path setup 4593 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4594 4595 for (i=0;i<num_bis;i++){ 4596 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4597 big->bis_con_handles[i] = bis_handle; 4598 // assign bis handle 4599 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4600 while (btstack_linked_list_iterator_has_next(&it)){ 4601 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4602 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4603 (iso_stream->group_id == big->big_handle)){ 4604 iso_stream->cis_handle = bis_handle; 4605 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4606 break; 4607 } 4608 } 4609 } 4610 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4611 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4612 big->state_vars.next_bis = 0; 4613 } 4614 } else { 4615 // create BIG failed or has been stopped by us 4616 hci_iso_create_big_failed(big, status); 4617 } 4618 } 4619 break; 4620 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4621 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4622 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4623 if (big != NULL){ 4624 // finalize associated ISO streams 4625 4626 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4627 while (btstack_linked_list_iterator_has_next(&it)){ 4628 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4629 if (iso_stream->group_id == big->big_handle){ 4630 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4631 btstack_linked_list_iterator_remove(&it); 4632 btstack_memory_hci_iso_stream_free(iso_stream); 4633 } 4634 } 4635 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4636 switch (big->state){ 4637 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4638 hci_emit_big_created(big, big->state_vars.status); 4639 break; 4640 default: 4641 hci_emit_big_terminated(big); 4642 break; 4643 } 4644 } 4645 break; 4646 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4647 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4648 big_sync = hci_big_sync_for_handle(packet[4]); 4649 if (big_sync != NULL){ 4650 uint8_t status = packet[3]; 4651 if (status == ERROR_CODE_SUCCESS){ 4652 // store bis_con_handles and trigger iso path setup 4653 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4654 for (i=0;i<num_bis;i++){ 4655 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4656 big_sync->bis_con_handles[i] = bis_handle; 4657 // setup iso_stream_t 4658 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4659 while (btstack_linked_list_iterator_has_next(&it)){ 4660 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4661 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4662 (iso_stream->group_id == big_sync->big_handle)){ 4663 iso_stream->cis_handle = bis_handle; 4664 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4665 break; 4666 } 4667 } 4668 } 4669 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4670 // trigger iso path setup 4671 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4672 big_sync->state_vars.next_bis = 0; 4673 } 4674 } else { 4675 // create BIG Sync failed or has been stopped by us 4676 hci_iso_big_sync_failed(big_sync, status); 4677 } 4678 } 4679 break; 4680 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4681 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4682 big_sync = hci_big_sync_for_handle(packet[4]); 4683 if (big_sync != NULL){ 4684 uint8_t big_handle = packet[4]; 4685 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4686 hci_emit_big_sync_stopped(big_handle); 4687 } 4688 break; 4689 #endif 4690 default: 4691 break; 4692 } 4693 break; 4694 #endif 4695 case HCI_EVENT_VENDOR_SPECIFIC: 4696 // Vendor specific commands often create vendor specific event instead of num completed packets 4697 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4698 switch (hci_stack->manufacturer){ 4699 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4700 hci_stack->num_cmd_packets = 1; 4701 break; 4702 default: 4703 break; 4704 } 4705 break; 4706 default: 4707 break; 4708 } 4709 4710 handle_event_for_current_stack_state(packet, size); 4711 4712 // notify upper stack 4713 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4714 4715 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4716 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4717 handle = little_endian_read_16(packet, 3); 4718 hci_connection_t * aConn = hci_connection_for_handle(handle); 4719 // discard connection if app did not trigger a reconnect in the event handler 4720 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4721 hci_shutdown_connection(aConn); 4722 } 4723 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4724 hci_controller_dump_packets(); 4725 #endif 4726 } 4727 4728 // execute main loop 4729 hci_run(); 4730 } 4731 4732 #ifdef ENABLE_CLASSIC 4733 4734 static void sco_handler(uint8_t * packet, uint16_t size){ 4735 // lookup connection struct 4736 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4737 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4738 if (!conn) return; 4739 4740 #ifdef ENABLE_SCO_OVER_HCI 4741 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4742 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4743 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4744 packet[2] = 0x3c; 4745 memmove(&packet[3], &packet[23], 63); 4746 size = 63; 4747 } 4748 } 4749 4750 if (hci_have_usb_transport()){ 4751 // Nothing to do 4752 } else { 4753 // 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); 4754 if (hci_stack->synchronous_flow_control_enabled == 0){ 4755 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4756 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4757 if (conn->sco_tx_active == 0){ 4758 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4759 conn->sco_tx_active = 1; 4760 conn->sco_tx_ready = max_sco_packets; 4761 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4762 hci_notify_if_sco_can_send_now(); 4763 } 4764 } else { 4765 if (conn->sco_tx_ready < max_sco_packets){ 4766 conn->sco_tx_ready++; 4767 } 4768 hci_notify_if_sco_can_send_now(); 4769 } 4770 } 4771 } 4772 #endif 4773 4774 // deliver to app 4775 if (hci_stack->sco_packet_handler) { 4776 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4777 } 4778 4779 #ifdef HAVE_SCO_TRANSPORT 4780 // We can send one packet for each received packet 4781 conn->sco_tx_ready++; 4782 hci_notify_if_sco_can_send_now(); 4783 #endif 4784 4785 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4786 conn->num_packets_completed++; 4787 hci_stack->host_completed_packets = 1; 4788 hci_run(); 4789 #endif 4790 } 4791 #endif 4792 4793 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4794 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4795 // propagate ISO packets received as ACL 4796 hci_iso_stream_t * iso_stream = NULL; 4797 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4798 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4799 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4800 if (iso_stream != NULL){ 4801 packet_type = HCI_ISO_DATA_PACKET; 4802 } 4803 } 4804 #endif 4805 4806 // don't log internal events unless requested 4807 bool internal_event = (packet_type == HCI_EVENT_PACKET) && (hci_event_packet_get_type(packet) >= BTSTACK_EVENT_FIRST); 4808 bool log_packet = internal_event == false; 4809 #ifdef ENABLE_LOG_BTSTACK_EVENTS 4810 log_packet = true; 4811 #endif 4812 if (log_packet){ 4813 hci_dump_packet(packet_type, 1, packet, size); 4814 } 4815 4816 switch (packet_type) { 4817 case HCI_EVENT_PACKET: 4818 event_handler(packet, size); 4819 break; 4820 case HCI_ACL_DATA_PACKET: 4821 acl_handler(packet, size); 4822 break; 4823 #ifdef ENABLE_CLASSIC 4824 case HCI_SCO_DATA_PACKET: 4825 sco_handler(packet, size); 4826 break; 4827 #endif 4828 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4829 case HCI_ISO_DATA_PACKET: 4830 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4831 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4832 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4833 } 4834 hci_iso_packet_handler(iso_stream, packet, size); 4835 break; 4836 #endif 4837 default: 4838 break; 4839 } 4840 } 4841 4842 /** 4843 * @brief Add event packet handler. 4844 */ 4845 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4846 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4847 } 4848 4849 /** 4850 * @brief Remove event packet handler. 4851 */ 4852 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4853 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4854 } 4855 4856 /** Register HCI packet handlers */ 4857 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4858 hci_stack->acl_packet_handler = handler; 4859 } 4860 4861 #ifdef ENABLE_CLASSIC 4862 /** 4863 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4864 */ 4865 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4866 hci_stack->sco_packet_handler = handler; 4867 } 4868 #endif 4869 4870 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4871 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4872 hci_stack->iso_packet_handler = handler; 4873 } 4874 #endif 4875 4876 static void hci_state_reset(void){ 4877 // no connections yet 4878 hci_stack->connections = NULL; 4879 4880 // keep discoverable/connectable as this has been requested by the client(s) 4881 // hci_stack->discoverable = 0; 4882 // hci_stack->connectable = 0; 4883 // hci_stack->bondable = 1; 4884 // hci_stack->own_addr_type = 0; 4885 4886 // buffer is free 4887 hci_stack->hci_packet_buffer_reserved = false; 4888 4889 // no pending cmds 4890 hci_stack->decline_reason = 0; 4891 4892 hci_stack->secure_connections_active = false; 4893 4894 #ifdef ENABLE_CLASSIC 4895 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4896 4897 hci_stack->gap_tasks_classic = 4898 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4899 GAP_TASK_SET_CLASS_OF_DEVICE | 4900 GAP_TASK_SET_LOCAL_NAME | 4901 GAP_TASK_SET_EIR_DATA | 4902 GAP_TASK_WRITE_SCAN_ENABLE | 4903 GAP_TASK_WRITE_PAGE_TIMEOUT; 4904 #endif 4905 4906 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4907 hci_stack->classic_read_local_oob_data = false; 4908 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4909 #endif 4910 4911 // LE 4912 #ifdef ENABLE_BLE 4913 memset(hci_stack->le_random_address, 0, 6); 4914 hci_stack->le_random_address_set = 0; 4915 #endif 4916 #ifdef ENABLE_LE_CENTRAL 4917 hci_stack->le_scanning_active = false; 4918 hci_stack->le_scanning_param_update = true; 4919 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4920 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4921 hci_stack->le_whitelist_capacity = 0; 4922 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4923 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4924 #endif 4925 #endif 4926 #ifdef ENABLE_LE_PERIPHERAL 4927 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4928 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4929 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4930 } 4931 if (hci_stack->le_advertisements_data != NULL){ 4932 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4933 } 4934 #endif 4935 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4936 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4937 #endif 4938 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4939 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4940 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4941 #endif 4942 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4943 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4944 #endif 4945 } 4946 4947 #ifdef ENABLE_CLASSIC 4948 /** 4949 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4950 */ 4951 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4952 // store and open remote device db 4953 hci_stack->link_key_db = link_key_db; 4954 if (hci_stack->link_key_db) { 4955 hci_stack->link_key_db->open(); 4956 } 4957 } 4958 #endif 4959 4960 void hci_init(const hci_transport_t *transport, const void *config){ 4961 4962 #ifdef HAVE_MALLOC 4963 if (!hci_stack) { 4964 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4965 } 4966 btstack_assert(hci_stack != NULL); 4967 #else 4968 hci_stack = &hci_stack_static; 4969 #endif 4970 memset(hci_stack, 0, sizeof(hci_stack_t)); 4971 4972 // reference to use transport layer implementation 4973 hci_stack->hci_transport = transport; 4974 4975 // reference to used config 4976 hci_stack->config = config; 4977 4978 // setup pointer for outgoing packet buffer 4979 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4980 4981 // max acl payload size defined in config.h 4982 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4983 4984 // register packet handlers with transport 4985 transport->register_packet_handler(&packet_handler); 4986 4987 hci_stack->state = HCI_STATE_OFF; 4988 4989 // class of device 4990 hci_stack->class_of_device = 0x007a020c; // Smartphone 4991 4992 // bondable by default 4993 hci_stack->bondable = 1; 4994 4995 #ifdef ENABLE_CLASSIC 4996 // classic name 4997 hci_stack->local_name = default_classic_name; 4998 4999 // Master slave policy 5000 hci_stack->master_slave_policy = 1; 5001 5002 // Allow Role Switch 5003 hci_stack->allow_role_switch = 1; 5004 5005 // Default / minimum security level = 2 5006 hci_stack->gap_security_level = LEVEL_2; 5007 5008 // Default Security Mode 4 5009 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 5010 5011 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 5012 hci_stack->gap_required_encyrption_key_size = 7; 5013 5014 // Link Supervision Timeout 5015 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 5016 5017 // Page Timeout 5018 hci_stack->page_timeout = 0x6000; // ca. 15 sec 5019 5020 // All ACL packet types are enabled 5021 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 5022 #endif 5023 5024 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 5025 hci_stack->ssp_enable = 1; 5026 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 5027 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5028 hci_stack->ssp_auto_accept = 1; 5029 5030 // Secure Connections: enable (requires support from Controller) 5031 hci_stack->secure_connections_enable = true; 5032 5033 // voice setting - signed 16 bit pcm data with CVSD over the air 5034 hci_stack->sco_voice_setting = 0x60; 5035 5036 #ifdef ENABLE_BLE 5037 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 5038 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 5039 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 5040 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 5041 hci_stack->le_connection_latency = 4; // 4 5042 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 5043 hci_stack->le_minimum_ce_length = 0; // 0 ms 5044 hci_stack->le_maximum_ce_length = 0; // 0 ms 5045 #endif 5046 5047 #ifdef ENABLE_LE_CENTRAL 5048 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 5049 5050 // default LE Scanning 5051 hci_stack->le_scan_type = 0x01; // active 5052 hci_stack->le_scan_interval = 0x1e0; // 300 ms 5053 hci_stack->le_scan_window = 0x30; // 30 ms 5054 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 5055 #endif 5056 5057 #ifdef ENABLE_LE_PERIPHERAL 5058 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 5059 5060 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 5061 hci_stack->le_advertisements_interval_min = 0x0800; 5062 hci_stack->le_advertisements_interval_max = 0x0800; 5063 hci_stack->le_advertisements_type = 0; 5064 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 5065 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 5066 hci_stack->le_advertisements_channel_map = 0x07; 5067 hci_stack->le_advertisements_filter_policy = 0; 5068 #endif 5069 5070 // connection parameter range used to answer connection parameter update requests in l2cap 5071 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 5072 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 5073 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 5074 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 5075 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 5076 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 5077 5078 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5079 hci_stack->iso_packets_to_queue = 1; 5080 #endif 5081 5082 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5083 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5084 #endif 5085 5086 hci_state_reset(); 5087 } 5088 5089 void hci_deinit(void){ 5090 btstack_run_loop_remove_timer(&hci_stack->timeout); 5091 #ifdef HAVE_MALLOC 5092 if (hci_stack) { 5093 free(hci_stack); 5094 } 5095 #endif 5096 hci_stack = NULL; 5097 5098 #ifdef ENABLE_CLASSIC 5099 disable_l2cap_timeouts = 0; 5100 #endif 5101 } 5102 5103 /** 5104 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5105 */ 5106 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5107 hci_stack->chipset = chipset_driver; 5108 5109 // reset chipset driver - init is also called on power_up 5110 if (hci_stack->chipset && hci_stack->chipset->init){ 5111 hci_stack->chipset->init(hci_stack->config); 5112 } 5113 } 5114 5115 void hci_enable_custom_pre_init(void){ 5116 hci_stack->chipset_pre_init = true; 5117 } 5118 5119 /** 5120 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5121 */ 5122 void hci_set_control(const btstack_control_t *hardware_control){ 5123 // references to used control implementation 5124 hci_stack->control = hardware_control; 5125 // init with transport config 5126 hardware_control->init(hci_stack->config); 5127 } 5128 5129 static void hci_discard_connections(void){ 5130 btstack_linked_list_iterator_t it; 5131 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5132 while (btstack_linked_list_iterator_has_next(&it)){ 5133 // cancel all l2cap connections by emitting disconnection complete before shutdown (free) connection 5134 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5135 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5136 hci_shutdown_connection(connection); 5137 } 5138 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5139 while (hci_stack->iso_streams != NULL){ 5140 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5141 } 5142 #endif 5143 } 5144 5145 void hci_close(void){ 5146 5147 #ifdef ENABLE_CLASSIC 5148 // close remote device db 5149 if (hci_stack->link_key_db) { 5150 hci_stack->link_key_db->close(); 5151 } 5152 #endif 5153 5154 hci_discard_connections(); 5155 5156 hci_power_control(HCI_POWER_OFF); 5157 5158 #ifdef HAVE_MALLOC 5159 free(hci_stack); 5160 #endif 5161 hci_stack = NULL; 5162 } 5163 5164 #ifdef HAVE_SCO_TRANSPORT 5165 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5166 hci_stack->sco_transport = sco_transport; 5167 sco_transport->register_packet_handler(&packet_handler); 5168 } 5169 #endif 5170 5171 #ifdef ENABLE_CLASSIC 5172 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5173 // validate range and set 5174 if (encryption_key_size < 7) return; 5175 if (encryption_key_size > 16) return; 5176 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5177 } 5178 5179 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5180 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5181 hci_stack->gap_security_mode = security_mode; 5182 return ERROR_CODE_SUCCESS; 5183 } else { 5184 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5185 } 5186 } 5187 5188 gap_security_mode_t gap_get_security_mode(void){ 5189 return hci_stack->gap_security_mode; 5190 } 5191 5192 void gap_set_security_level(gap_security_level_t security_level){ 5193 hci_stack->gap_security_level = security_level; 5194 } 5195 5196 gap_security_level_t gap_get_security_level(void){ 5197 if (hci_stack->gap_secure_connections_only_mode){ 5198 return LEVEL_4; 5199 } 5200 return hci_stack->gap_security_level; 5201 } 5202 5203 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5204 hci_stack->gap_minimal_service_security_level = security_level; 5205 } 5206 5207 void gap_set_secure_connections_only_mode(bool enable){ 5208 hci_stack->gap_secure_connections_only_mode = enable; 5209 } 5210 5211 bool gap_get_secure_connections_only_mode(void){ 5212 return hci_stack->gap_secure_connections_only_mode; 5213 } 5214 #endif 5215 5216 #ifdef ENABLE_CLASSIC 5217 void gap_set_class_of_device(uint32_t class_of_device){ 5218 hci_stack->class_of_device = class_of_device; 5219 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5220 hci_run(); 5221 } 5222 5223 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5224 hci_stack->default_link_policy_settings = default_link_policy_settings; 5225 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5226 hci_run(); 5227 } 5228 5229 void gap_set_allow_role_switch(bool allow_role_switch){ 5230 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5231 } 5232 5233 uint8_t hci_get_allow_role_switch(void){ 5234 return hci_stack->allow_role_switch; 5235 } 5236 5237 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5238 hci_stack->link_supervision_timeout = link_supervision_timeout; 5239 } 5240 5241 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5242 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5243 } 5244 5245 uint16_t hci_automatic_flush_timeout(void){ 5246 return hci_stack->automatic_flush_timeout; 5247 } 5248 5249 void hci_disable_l2cap_timeout_check(void){ 5250 disable_l2cap_timeouts = 1; 5251 } 5252 #endif 5253 5254 #ifndef HAVE_HOST_CONTROLLER_API 5255 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5256 void hci_set_bd_addr(bd_addr_t addr){ 5257 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5258 hci_stack->custom_bd_addr_set = 1; 5259 } 5260 #endif 5261 5262 // State-Module-Driver overview 5263 // state module low-level 5264 // HCI_STATE_OFF off close 5265 // HCI_STATE_INITIALIZING, on open 5266 // HCI_STATE_WORKING, on open 5267 // HCI_STATE_HALTING, on open 5268 // HCI_STATE_SLEEPING, off/sleep close 5269 // HCI_STATE_FALLING_ASLEEP on open 5270 5271 static int hci_power_control_on(void){ 5272 5273 // power on 5274 int err = 0; 5275 if (hci_stack->control && hci_stack->control->on){ 5276 err = (*hci_stack->control->on)(); 5277 } 5278 if (err){ 5279 log_error( "POWER_ON failed"); 5280 hci_emit_hci_open_failed(); 5281 return err; 5282 } 5283 5284 // int chipset driver 5285 if (hci_stack->chipset && hci_stack->chipset->init){ 5286 hci_stack->chipset->init(hci_stack->config); 5287 } 5288 5289 // init transport 5290 if (hci_stack->hci_transport->init){ 5291 hci_stack->hci_transport->init(hci_stack->config); 5292 } 5293 5294 // open transport 5295 err = hci_stack->hci_transport->open(); 5296 if (err){ 5297 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5298 if (hci_stack->control && hci_stack->control->off){ 5299 (*hci_stack->control->off)(); 5300 } 5301 hci_emit_hci_open_failed(); 5302 return err; 5303 } 5304 return 0; 5305 } 5306 5307 static void hci_power_control_off(void){ 5308 5309 log_info("hci_power_control_off"); 5310 5311 // close low-level device 5312 hci_stack->hci_transport->close(); 5313 5314 log_info("hci_power_control_off - hci_transport closed"); 5315 5316 // power off 5317 if (hci_stack->control && hci_stack->control->off){ 5318 (*hci_stack->control->off)(); 5319 } 5320 5321 log_info("hci_power_control_off - control closed"); 5322 5323 hci_stack->state = HCI_STATE_OFF; 5324 } 5325 5326 static void hci_power_control_sleep(void){ 5327 5328 log_info("hci_power_control_sleep"); 5329 5330 #if 0 5331 // don't close serial port during sleep 5332 5333 // close low-level device 5334 hci_stack->hci_transport->close(hci_stack->config); 5335 #endif 5336 5337 // sleep mode 5338 if (hci_stack->control && hci_stack->control->sleep){ 5339 (*hci_stack->control->sleep)(); 5340 } 5341 5342 hci_stack->state = HCI_STATE_SLEEPING; 5343 } 5344 5345 static int hci_power_control_wake(void){ 5346 5347 log_info("hci_power_control_wake"); 5348 5349 // wake on 5350 if (hci_stack->control && hci_stack->control->wake){ 5351 (*hci_stack->control->wake)(); 5352 } 5353 5354 #if 0 5355 // open low-level device 5356 int err = hci_stack->hci_transport->open(hci_stack->config); 5357 if (err){ 5358 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5359 if (hci_stack->control && hci_stack->control->off){ 5360 (*hci_stack->control->off)(); 5361 } 5362 hci_emit_hci_open_failed(); 5363 return err; 5364 } 5365 #endif 5366 5367 return 0; 5368 } 5369 5370 static void hci_power_enter_initializing_state(void){ 5371 // set up state machine 5372 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5373 hci_stack->hci_packet_buffer_reserved = false; 5374 hci_stack->state = HCI_STATE_INITIALIZING; 5375 5376 #ifndef HAVE_HOST_CONTROLLER_API 5377 if (hci_stack->chipset_pre_init) { 5378 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5379 } else 5380 #endif 5381 { 5382 hci_stack->substate = HCI_INIT_SEND_RESET; 5383 } 5384 } 5385 5386 static void hci_power_enter_halting_state(void){ 5387 #ifdef ENABLE_BLE 5388 // drop entries scheduled for removal, mark others for re-adding 5389 btstack_linked_list_iterator_t it; 5390 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5391 while (btstack_linked_list_iterator_has_next(&it)){ 5392 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5393 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5394 btstack_linked_list_iterator_remove(&it); 5395 btstack_memory_whitelist_entry_free(entry); 5396 } else { 5397 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5398 } 5399 } 5400 #ifdef ENABLE_LE_CENTRAL 5401 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5402 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5403 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5404 while (btstack_linked_list_iterator_has_next(&it)){ 5405 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5406 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5407 btstack_linked_list_iterator_remove(&it); 5408 btstack_memory_periodic_advertiser_list_entry_free(entry); 5409 } else { 5410 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5411 continue; 5412 } 5413 } 5414 #endif 5415 #endif 5416 #endif 5417 // see hci_run 5418 hci_stack->state = HCI_STATE_HALTING; 5419 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5420 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5421 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5422 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5423 btstack_run_loop_add_timer(&hci_stack->timeout); 5424 } 5425 5426 // returns error 5427 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5428 int err; 5429 switch (power_mode){ 5430 case HCI_POWER_ON: 5431 err = hci_power_control_on(); 5432 if (err != 0) { 5433 log_error("hci_power_control_on() error %d", err); 5434 return err; 5435 } 5436 hci_power_enter_initializing_state(); 5437 break; 5438 case HCI_POWER_OFF: 5439 // do nothing 5440 break; 5441 case HCI_POWER_SLEEP: 5442 // do nothing (with SLEEP == OFF) 5443 break; 5444 default: 5445 btstack_assert(false); 5446 break; 5447 } 5448 return ERROR_CODE_SUCCESS; 5449 } 5450 5451 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5452 switch (power_mode){ 5453 case HCI_POWER_ON: 5454 // do nothing 5455 break; 5456 case HCI_POWER_OFF: 5457 // no connections yet, just turn it off 5458 hci_power_control_off(); 5459 break; 5460 case HCI_POWER_SLEEP: 5461 // no connections yet, just turn it off 5462 hci_power_control_sleep(); 5463 break; 5464 default: 5465 btstack_assert(false); 5466 break; 5467 } 5468 return ERROR_CODE_SUCCESS; 5469 } 5470 5471 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5472 switch (power_mode){ 5473 case HCI_POWER_ON: 5474 // do nothing 5475 break; 5476 case HCI_POWER_OFF: 5477 hci_power_enter_halting_state(); 5478 break; 5479 case HCI_POWER_SLEEP: 5480 // see hci_run 5481 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5482 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5483 break; 5484 default: 5485 btstack_assert(false); 5486 break; 5487 } 5488 return ERROR_CODE_SUCCESS; 5489 } 5490 5491 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5492 switch (power_mode){ 5493 case HCI_POWER_ON: 5494 hci_power_enter_initializing_state(); 5495 break; 5496 case HCI_POWER_OFF: 5497 // do nothing 5498 break; 5499 case HCI_POWER_SLEEP: 5500 // see hci_run 5501 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5502 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5503 break; 5504 default: 5505 btstack_assert(false); 5506 break; 5507 } 5508 return ERROR_CODE_SUCCESS; 5509 } 5510 5511 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5512 switch (power_mode){ 5513 case HCI_POWER_ON: 5514 hci_power_enter_initializing_state(); 5515 break; 5516 case HCI_POWER_OFF: 5517 hci_power_enter_halting_state(); 5518 break; 5519 case HCI_POWER_SLEEP: 5520 // do nothing 5521 break; 5522 default: 5523 btstack_assert(false); 5524 break; 5525 } 5526 return ERROR_CODE_SUCCESS; 5527 } 5528 5529 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5530 int err; 5531 switch (power_mode){ 5532 case HCI_POWER_ON: 5533 err = hci_power_control_wake(); 5534 if (err) return err; 5535 hci_power_enter_initializing_state(); 5536 break; 5537 case HCI_POWER_OFF: 5538 hci_power_enter_halting_state(); 5539 break; 5540 case HCI_POWER_SLEEP: 5541 // do nothing 5542 break; 5543 default: 5544 btstack_assert(false); 5545 break; 5546 } 5547 return ERROR_CODE_SUCCESS; 5548 } 5549 5550 int hci_power_control(HCI_POWER_MODE power_mode){ 5551 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5552 btstack_run_loop_remove_timer(&hci_stack->timeout); 5553 int err = 0; 5554 switch (hci_stack->state){ 5555 case HCI_STATE_OFF: 5556 err = hci_power_control_state_off(power_mode); 5557 break; 5558 case HCI_STATE_INITIALIZING: 5559 err = hci_power_control_state_initializing(power_mode); 5560 break; 5561 case HCI_STATE_WORKING: 5562 err = hci_power_control_state_working(power_mode); 5563 break; 5564 case HCI_STATE_HALTING: 5565 err = hci_power_control_state_halting(power_mode); 5566 break; 5567 case HCI_STATE_FALLING_ASLEEP: 5568 err = hci_power_control_state_falling_asleep(power_mode); 5569 break; 5570 case HCI_STATE_SLEEPING: 5571 err = hci_power_control_state_sleeping(power_mode); 5572 break; 5573 default: 5574 btstack_assert(false); 5575 break; 5576 } 5577 if (err != 0){ 5578 return err; 5579 } 5580 5581 // create internal event 5582 hci_emit_state(); 5583 5584 // trigger next/first action 5585 hci_run(); 5586 5587 return 0; 5588 } 5589 5590 5591 static void hci_halting_run(void) { 5592 5593 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5594 5595 hci_connection_t *connection; 5596 #ifdef ENABLE_BLE 5597 #ifdef ENABLE_LE_PERIPHERAL 5598 bool stop_advertisements; 5599 #endif 5600 #endif 5601 5602 switch (hci_stack->substate) { 5603 case HCI_HALTING_CLASSIC_STOP: 5604 #ifdef ENABLE_CLASSIC 5605 if (!hci_can_send_command_packet_now()) return; 5606 5607 if (hci_stack->connectable || hci_stack->discoverable){ 5608 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5609 hci_send_cmd(&hci_write_scan_enable, 0); 5610 return; 5611 } 5612 #endif 5613 /* fall through */ 5614 5615 case HCI_HALTING_LE_ADV_STOP: 5616 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5617 5618 #ifdef ENABLE_BLE 5619 #ifdef ENABLE_LE_PERIPHERAL 5620 if (!hci_can_send_command_packet_now()) return; 5621 5622 stop_advertisements = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5623 5624 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5625 if (hci_le_extended_advertising_supported()){ 5626 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5627 btstack_linked_list_iterator_t it; 5628 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5629 // stop all periodic advertisements and check if an extended set is active 5630 while (btstack_linked_list_iterator_has_next(&it)){ 5631 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5632 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5633 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5634 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5635 return; 5636 } 5637 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5638 stop_advertisements = true; 5639 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5640 } 5641 } 5642 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5643 if (stop_advertisements){ 5644 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5645 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5646 return; 5647 } 5648 } else 5649 #else /* ENABLE_LE_PERIPHERAL */ 5650 { 5651 if (stop_advertisements) { 5652 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5653 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5654 return; 5655 } 5656 } 5657 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5658 #endif /* ENABLE_LE_PERIPHERAL */ 5659 #endif /* ENABLE_BLE */ 5660 5661 /* fall through */ 5662 5663 case HCI_HALTING_LE_SCAN_STOP: 5664 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5665 if (!hci_can_send_command_packet_now()) return; 5666 5667 #ifdef ENABLE_BLE 5668 #ifdef ENABLE_LE_CENTRAL 5669 if (hci_stack->le_scanning_active){ 5670 hci_le_scan_stop(); 5671 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5672 return; 5673 } 5674 #endif 5675 #endif 5676 5677 /* fall through */ 5678 5679 case HCI_HALTING_DISCONNECT_ALL: 5680 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5681 if (!hci_can_send_command_packet_now()) return; 5682 5683 // close all open connections 5684 connection = (hci_connection_t *) hci_stack->connections; 5685 if (connection) { 5686 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5687 5688 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", (void*)connection, con_handle, connection->state); 5689 5690 // check state 5691 switch(connection->state) { 5692 case SENT_DISCONNECT: 5693 case RECEIVED_DISCONNECTION_COMPLETE: 5694 // wait until connection is gone 5695 return; 5696 default: 5697 break; 5698 } 5699 5700 // finally, send the disconnect command 5701 connection->state = SENT_DISCONNECT; 5702 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5703 return; 5704 } 5705 5706 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5707 // stop BIGs and BIG Syncs 5708 if (hci_stack->le_audio_bigs != NULL){ 5709 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5710 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5711 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5712 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5713 return; 5714 } 5715 if (hci_stack->le_audio_big_syncs != NULL){ 5716 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5717 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5718 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5719 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5720 return; 5721 } 5722 #endif 5723 5724 btstack_run_loop_remove_timer(&hci_stack->timeout); 5725 5726 // no connections left, wait a bit to assert that btstack_crypto isn't waiting for an HCI event 5727 log_info("HCI_STATE_HALTING: wait 50 ms"); 5728 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5729 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5730 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5731 btstack_run_loop_add_timer(&hci_stack->timeout); 5732 break; 5733 5734 case HCI_HALTING_W4_CLOSE_TIMER: 5735 // keep waiting 5736 break; 5737 5738 case HCI_HALTING_CLOSE: 5739 // close left over connections (that had not been properly closed before) 5740 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5741 hci_discard_connections(); 5742 5743 log_info("HCI_STATE_HALTING, calling off"); 5744 5745 // switch mode 5746 hci_power_control_off(); 5747 5748 log_info("HCI_STATE_HALTING, emitting state"); 5749 hci_emit_state(); 5750 log_info("HCI_STATE_HALTING, done"); 5751 break; 5752 5753 default: 5754 break; 5755 } 5756 } 5757 5758 static void hci_falling_asleep_run(void){ 5759 hci_connection_t * connection; 5760 switch(hci_stack->substate) { 5761 case HCI_FALLING_ASLEEP_DISCONNECT: 5762 log_info("HCI_STATE_FALLING_ASLEEP"); 5763 // close all open connections 5764 connection = (hci_connection_t *) hci_stack->connections; 5765 if (connection){ 5766 5767 // send disconnect 5768 if (!hci_can_send_command_packet_now()) return; 5769 5770 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", (void*)connection, (uint16_t)connection->con_handle); 5771 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5772 5773 // send disconnected event right away - causes higher layer connections to get closed, too. 5774 hci_shutdown_connection(connection); 5775 return; 5776 } 5777 5778 if (hci_classic_supported()){ 5779 // disable page and inquiry scan 5780 if (!hci_can_send_command_packet_now()) return; 5781 5782 log_info("HCI_STATE_HALTING, disabling inq scans"); 5783 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5784 5785 // continue in next substate 5786 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5787 break; 5788 } 5789 5790 /* fall through */ 5791 5792 case HCI_FALLING_ASLEEP_COMPLETE: 5793 log_info("HCI_STATE_HALTING, calling sleep"); 5794 // switch mode 5795 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5796 hci_emit_state(); 5797 break; 5798 5799 default: 5800 break; 5801 } 5802 } 5803 5804 #ifdef ENABLE_CLASSIC 5805 5806 static void hci_update_scan_enable(void){ 5807 // 2 = page scan, 1 = inq scan 5808 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5809 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5810 hci_run(); 5811 } 5812 5813 void gap_discoverable_control(uint8_t enable){ 5814 if (enable) enable = 1; // normalize argument 5815 5816 if (hci_stack->discoverable == enable){ 5817 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5818 return; 5819 } 5820 5821 hci_stack->discoverable = enable; 5822 hci_update_scan_enable(); 5823 } 5824 5825 void gap_connectable_control(uint8_t enable){ 5826 if (enable) enable = 1; // normalize argument 5827 5828 // don't emit event 5829 if (hci_stack->connectable == enable) return; 5830 5831 hci_stack->connectable = enable; 5832 hci_update_scan_enable(); 5833 } 5834 #endif 5835 5836 void gap_local_bd_addr(bd_addr_t address_buffer){ 5837 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5838 } 5839 5840 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5841 static void hci_host_num_completed_packets(void){ 5842 5843 // create packet manually as arrays are not supported and num_commands should not get reduced 5844 hci_reserve_packet_buffer(); 5845 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5846 5847 uint16_t size = 0; 5848 uint16_t num_handles = 0; 5849 packet[size++] = 0x35; 5850 packet[size++] = 0x0c; 5851 size++; // skip param len 5852 size++; // skip num handles 5853 5854 // add { handle, packets } entries 5855 btstack_linked_item_t * it; 5856 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5857 hci_connection_t * connection = (hci_connection_t *) it; 5858 if (connection->num_packets_completed){ 5859 little_endian_store_16(packet, size, connection->con_handle); 5860 size += 2; 5861 little_endian_store_16(packet, size, connection->num_packets_completed); 5862 size += 2; 5863 // 5864 num_handles++; 5865 connection->num_packets_completed = 0; 5866 } 5867 } 5868 5869 packet[2] = size - 3; 5870 packet[3] = num_handles; 5871 5872 hci_stack->host_completed_packets = 0; 5873 5874 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5875 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5876 5877 // release packet buffer for synchronous transport implementations 5878 if (hci_transport_synchronous()){ 5879 hci_release_packet_buffer(); 5880 hci_emit_transport_packet_sent(); 5881 } 5882 } 5883 #endif 5884 5885 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5886 UNUSED(ds); 5887 hci_stack->substate = HCI_HALTING_CLOSE; 5888 hci_halting_run(); 5889 } 5890 5891 static bool hci_run_acl_fragments(void){ 5892 if (hci_stack->acl_fragmentation_total_size > 0u) { 5893 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5894 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5895 if (connection) { 5896 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5897 hci_send_acl_packet_fragments(connection); 5898 return true; 5899 } 5900 } else { 5901 // connection gone -> discard further fragments 5902 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5903 hci_stack->acl_fragmentation_total_size = 0; 5904 hci_stack->acl_fragmentation_pos = 0; 5905 } 5906 } 5907 return false; 5908 } 5909 5910 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5911 static bool hci_run_iso_fragments(void){ 5912 if (hci_stack->iso_fragmentation_total_size > 0u) { 5913 // TODO: flow control 5914 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5915 hci_send_iso_packet_fragments(); 5916 return true; 5917 } 5918 } 5919 return false; 5920 } 5921 #endif 5922 5923 #ifdef ENABLE_CLASSIC 5924 5925 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5926 static bool hci_classic_operation_active(void) { 5927 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5928 return true; 5929 } 5930 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5931 return true; 5932 } 5933 btstack_linked_item_t * it; 5934 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5935 hci_connection_t *connection = (hci_connection_t *) it; 5936 switch (connection->state) { 5937 case SENT_CREATE_CONNECTION: 5938 case SENT_CANCEL_CONNECTION: 5939 case SENT_DISCONNECT: 5940 return true; 5941 default: 5942 break; 5943 } 5944 } 5945 return false; 5946 } 5947 #endif 5948 5949 static bool hci_run_general_gap_classic(void){ 5950 5951 // assert stack is working and classic is active 5952 if (hci_classic_supported() == false) return false; 5953 if (hci_stack->state != HCI_STATE_WORKING) return false; 5954 5955 // decline incoming connections 5956 if (hci_stack->decline_reason){ 5957 uint8_t reason = hci_stack->decline_reason; 5958 hci_stack->decline_reason = 0; 5959 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5960 return true; 5961 } 5962 5963 if (hci_stack->gap_tasks_classic != 0){ 5964 hci_run_gap_tasks_classic(); 5965 return true; 5966 } 5967 5968 // start/stop inquiry 5969 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5970 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5971 if (hci_classic_operation_active() == false) 5972 #endif 5973 { 5974 uint8_t duration = hci_stack->inquiry_state; 5975 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5976 if (hci_stack->inquiry_max_period_length != 0){ 5977 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); 5978 } else { 5979 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5980 } 5981 return true; 5982 } 5983 } 5984 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5985 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5986 hci_send_cmd(&hci_inquiry_cancel); 5987 return true; 5988 } 5989 5990 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5991 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5992 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5993 return true; 5994 } 5995 5996 // remote name request 5997 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5998 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5999 if (hci_classic_operation_active() == false) 6000 #endif 6001 { 6002 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 6003 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 6004 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 6005 return true; 6006 } 6007 } 6008 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6009 // Local OOB data 6010 if (hci_stack->classic_read_local_oob_data){ 6011 hci_stack->classic_read_local_oob_data = false; 6012 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 6013 hci_send_cmd(&hci_read_local_extended_oob_data); 6014 } else { 6015 hci_send_cmd(&hci_read_local_oob_data); 6016 } 6017 } 6018 #endif 6019 // pairing 6020 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 6021 uint8_t state = hci_stack->gap_pairing_state; 6022 uint8_t pin_code[PIN_CODE_LEN]; 6023 switch (state){ 6024 case GAP_PAIRING_STATE_SEND_PIN: 6025 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6026 memset(pin_code, 0, 16); 6027 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 6028 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 6029 break; 6030 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 6031 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6032 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 6033 break; 6034 case GAP_PAIRING_STATE_SEND_PASSKEY: 6035 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6036 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 6037 break; 6038 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 6039 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6040 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 6041 break; 6042 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 6043 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6044 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 6045 break; 6046 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 6047 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6048 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 6049 break; 6050 default: 6051 break; 6052 } 6053 return true; 6054 } 6055 return false; 6056 } 6057 #endif 6058 6059 #ifdef ENABLE_BLE 6060 #ifdef ENABLE_LE_CENTRAL 6061 6062 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6063 static uint8_t hci_le_num_phys(uint8_t phys){ 6064 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 6065 btstack_assert(phys); 6066 return num_bits_set[phys]; 6067 } 6068 #endif 6069 6070 static void hci_le_scan_stop(void){ 6071 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6072 if (hci_le_extended_advertising_supported()) { 6073 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 6074 } else 6075 #endif 6076 { 6077 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 6078 } 6079 } 6080 6081 static void 6082 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 6083 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6084 if (hci_le_extended_advertising_supported()) { 6085 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6086 uint16_t le_connection_scan_interval[3]; 6087 uint16_t le_connection_scan_window[3]; 6088 uint16_t le_connection_interval_min[3]; 6089 uint16_t le_connection_interval_max[3]; 6090 uint16_t le_connection_latency[3]; 6091 uint16_t le_supervision_timeout[3]; 6092 uint16_t le_minimum_ce_length[3]; 6093 uint16_t le_maximum_ce_length[3]; 6094 6095 uint8_t i; 6096 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6097 for (i=0;i<num_phys;i++){ 6098 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6099 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6100 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6101 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6102 le_connection_latency[i] = hci_stack->le_connection_latency; 6103 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6104 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6105 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6106 } 6107 hci_send_cmd(&hci_le_extended_create_connection, 6108 initiator_filter_policy, 6109 hci_stack->le_connection_own_addr_type, // our addr type: 6110 address_type, // peer address type 6111 address, // peer bd addr 6112 hci_stack->le_connection_phys, // initiating PHY 6113 le_connection_scan_interval, // conn scan interval 6114 le_connection_scan_window, // conn scan windows 6115 le_connection_interval_min, // conn interval min 6116 le_connection_interval_max, // conn interval max 6117 le_connection_latency, // conn latency 6118 le_supervision_timeout, // conn latency 6119 le_minimum_ce_length, // min ce length 6120 le_maximum_ce_length // max ce length 6121 ); 6122 } else 6123 #endif 6124 { 6125 hci_send_cmd(&hci_le_create_connection, 6126 hci_stack->le_connection_scan_interval, // conn scan interval 6127 hci_stack->le_connection_scan_window, // conn scan windows 6128 initiator_filter_policy, // don't use whitelist 6129 address_type, // peer address type 6130 address, // peer bd addr 6131 hci_stack->le_connection_own_addr_type, // our addr type: 6132 hci_stack->le_connection_interval_min, // conn interval min 6133 hci_stack->le_connection_interval_max, // conn interval max 6134 hci_stack->le_connection_latency, // conn latency 6135 hci_stack->le_supervision_timeout, // conn latency 6136 hci_stack->le_minimum_ce_length, // min ce length 6137 hci_stack->le_maximum_ce_length // max ce length 6138 ); 6139 } 6140 } 6141 #endif 6142 6143 #ifdef ENABLE_LE_PERIPHERAL 6144 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6145 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6146 uint8_t operation = 0; 6147 if (pos == 0){ 6148 // first fragment or complete data 6149 operation |= 1; 6150 } 6151 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6152 // last fragment or complete data 6153 operation |= 2; 6154 } 6155 return operation; 6156 } 6157 #endif 6158 #endif 6159 6160 static bool hci_whitelist_modification_pending(void) { 6161 btstack_linked_list_iterator_t it; 6162 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6163 while (btstack_linked_list_iterator_has_next(&it)){ 6164 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6165 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6166 return true; 6167 } 6168 } 6169 return false; 6170 } 6171 6172 static bool hci_whitelist_modification_process(void){ 6173 // add/remove entries 6174 btstack_linked_list_iterator_t it; 6175 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6176 while (btstack_linked_list_iterator_has_next(&it)){ 6177 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6178 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6179 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6180 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6181 bd_addr_type_t address_type = entry->address_type; 6182 bd_addr_t address; 6183 memcpy(address, entry->address, 6); 6184 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6185 // remove from whitelist if not scheduled for re-addition 6186 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6187 btstack_memory_whitelist_entry_free(entry); 6188 } 6189 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6190 return true; 6191 } 6192 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6193 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6194 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6195 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6196 return true; 6197 } 6198 } 6199 return false; 6200 } 6201 6202 static bool hci_run_general_gap_le(void){ 6203 6204 btstack_linked_list_iterator_t lit; 6205 UNUSED(lit); 6206 6207 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6208 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6209 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6210 hci_stack->le_resolvable_private_address_update_s = 0; 6211 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6212 return true; 6213 } 6214 #endif 6215 6216 // Phase 1: collect what to stop 6217 6218 #ifdef ENABLE_LE_CENTRAL 6219 bool scanning_stop = false; 6220 bool connecting_stop = false; 6221 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6222 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6223 bool periodic_sync_stop = false; 6224 #endif 6225 #endif 6226 #endif 6227 6228 #ifdef ENABLE_LE_PERIPHERAL 6229 bool advertising_stop = false; 6230 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6231 le_advertising_set_t * advertising_stop_set = NULL; 6232 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6233 bool periodic_advertising_stop = false; 6234 #endif 6235 #endif 6236 #endif 6237 6238 // check if own address changes 6239 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6240 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6241 6242 // check if whitelist needs modification 6243 bool whitelist_modification_pending = hci_whitelist_modification_pending(); 6244 6245 // check if resolving list needs modification 6246 bool resolving_list_modification_pending = false; 6247 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6248 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6249 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6250 resolving_list_modification_pending = true; 6251 } 6252 #endif 6253 6254 #ifdef ENABLE_LE_CENTRAL 6255 6256 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6257 // check if periodic advertiser list needs modification 6258 bool periodic_list_modification_pending = false; 6259 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6260 while (btstack_linked_list_iterator_has_next(&lit)){ 6261 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6262 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6263 periodic_list_modification_pending = true; 6264 break; 6265 } 6266 } 6267 #endif 6268 6269 // scanning control 6270 if (hci_stack->le_scanning_active) { 6271 // stop if: 6272 // - parameter change required 6273 // - it's disabled 6274 // - whitelist change required but used for scanning 6275 // - resolving list modified 6276 // - own address changes 6277 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6278 if ((hci_stack->le_scanning_param_update) || 6279 !hci_stack->le_scanning_enabled || 6280 (scanning_uses_whitelist && whitelist_modification_pending) || 6281 resolving_list_modification_pending || 6282 random_address_change){ 6283 6284 scanning_stop = true; 6285 } 6286 } 6287 6288 // connecting control 6289 bool connecting_with_whitelist; 6290 switch (hci_stack->le_connecting_state){ 6291 case LE_CONNECTING_DIRECT: 6292 case LE_CONNECTING_WHITELIST: 6293 // stop connecting if: 6294 // - connecting uses white and whitelist modification pending 6295 // - if it got disabled 6296 // - resolving list modified 6297 // - own address changes 6298 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6299 if ((connecting_with_whitelist && whitelist_modification_pending) || 6300 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6301 resolving_list_modification_pending || 6302 random_address_change) { 6303 6304 connecting_stop = true; 6305 } 6306 break; 6307 default: 6308 break; 6309 } 6310 6311 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6312 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6313 // periodic sync control 6314 bool sync_with_advertiser_list; 6315 switch(hci_stack->le_periodic_sync_state){ 6316 case LE_CONNECTING_DIRECT: 6317 case LE_CONNECTING_WHITELIST: 6318 // stop sync if: 6319 // - sync with advertiser list and advertiser list modification pending 6320 // - if it got disabled 6321 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6322 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6323 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6324 periodic_sync_stop = true; 6325 } 6326 break; 6327 default: 6328 break; 6329 } 6330 #endif 6331 #endif 6332 6333 #endif /* ENABLE_LE_CENTRAL */ 6334 6335 #ifdef ENABLE_LE_PERIPHERAL 6336 // le advertisement control 6337 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6338 // stop if: 6339 // - parameter change required 6340 // - random address used in advertising and changes 6341 // - it's disabled 6342 // - whitelist change required but used for advertisement filter policy 6343 // - resolving list modified 6344 // - own address changes 6345 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6346 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6347 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6348 if (advertising_change || 6349 (advertising_uses_random_address && random_address_change) || 6350 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6351 (advertising_uses_whitelist && whitelist_modification_pending) || 6352 resolving_list_modification_pending || 6353 random_address_change) { 6354 6355 advertising_stop = true; 6356 } 6357 } 6358 6359 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6360 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6361 btstack_linked_list_iterator_t it; 6362 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6363 while (btstack_linked_list_iterator_has_next(&it)){ 6364 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6365 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6366 // stop if: 6367 // - parameter change required 6368 // - random address used in connectable advertising and changes 6369 // - it's disabled 6370 // - whitelist change required but used for advertisement filter policy 6371 // - resolving list modified 6372 // - own address changes 6373 // - advertisement set will be removed 6374 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6375 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6376 bool advertising_uses_random_address = 6377 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6378 advertising_connectable; 6379 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6380 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6381 bool advertising_set_random_address_change = 6382 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6383 bool advertising_set_will_be_removed = 6384 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6385 if (advertising_parameter_change || 6386 (advertising_uses_random_address && advertising_set_random_address_change) || 6387 (advertising_enabled == false) || 6388 (advertising_uses_whitelist && whitelist_modification_pending) || 6389 resolving_list_modification_pending || 6390 advertising_set_will_be_removed) { 6391 6392 advertising_stop = true; 6393 advertising_stop_set = advertising_set; 6394 break; 6395 } 6396 } 6397 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6398 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6399 // stop if: 6400 // - it's disabled 6401 // - parameter change required 6402 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6403 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6404 if ((periodic_enabled == false) || periodic_parameter_change){ 6405 periodic_advertising_stop = true; 6406 advertising_stop_set = advertising_set; 6407 } 6408 } 6409 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6410 } 6411 } 6412 #endif 6413 6414 #endif 6415 6416 6417 // Phase 2: stop everything that should be off during modifications 6418 6419 6420 // 2.1 Outgoing connection 6421 #ifdef ENABLE_LE_CENTRAL 6422 if (connecting_stop){ 6423 hci_send_cmd(&hci_le_create_connection_cancel); 6424 return true; 6425 } 6426 #endif 6427 6428 // 2.2 Scanning 6429 #ifdef ENABLE_LE_CENTRAL 6430 if (scanning_stop){ 6431 hci_stack->le_scanning_active = false; 6432 hci_le_scan_stop(); 6433 return true; 6434 } 6435 6436 // 2.3 Periodic Sync 6437 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6438 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6439 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6440 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6441 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6442 return true; 6443 } 6444 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6445 if (periodic_sync_stop){ 6446 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6447 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6448 return true; 6449 } 6450 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6451 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6452 #endif /* ENABLE_LE_CENTRAL */ 6453 6454 // 2.4 Advertising: legacy, extended, periodic 6455 #ifdef ENABLE_LE_PERIPHERAL 6456 if (advertising_stop){ 6457 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6458 if (hci_le_extended_advertising_supported()) { 6459 uint8_t advertising_stop_handle; 6460 if (advertising_stop_set != NULL){ 6461 advertising_stop_handle = advertising_stop_set->advertising_handle; 6462 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6463 } else { 6464 advertising_stop_handle = 0; 6465 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6466 } 6467 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6468 const uint16_t durations[] = { 0 }; 6469 const uint16_t max_events[] = { 0 }; 6470 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6471 } else 6472 #endif 6473 { 6474 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6475 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6476 } 6477 return true; 6478 } 6479 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6480 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6481 if (periodic_advertising_stop){ 6482 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6483 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6484 return true; 6485 } 6486 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6487 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6488 #endif /* ENABLE_LE_PERIPHERAL */ 6489 6490 6491 // Phase 3: modify 6492 6493 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6494 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6495 // GAP Privacy, notify clients upon upcoming random address change 6496 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6497 // notify might cause hci_run to get executed, check if we still can send 6498 gap_privacy_clients_notify(hci_stack->le_random_address); 6499 if (!hci_can_send_command_packet_now()) { 6500 return true; 6501 } 6502 } 6503 6504 // - wait until privacy update completed 6505 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6506 return false; 6507 } 6508 6509 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6510 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6511 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6512 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6513 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6514 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6515 #endif 6516 return true; 6517 } 6518 6519 #ifdef ENABLE_LE_CENTRAL 6520 if (hci_stack->le_scanning_param_update){ 6521 hci_stack->le_scanning_param_update = false; 6522 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6523 if (hci_le_extended_advertising_supported()){ 6524 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6525 uint8_t scan_types[2]; 6526 uint16_t scan_intervals[2]; 6527 uint16_t scan_windows[2]; 6528 6529 uint8_t i; 6530 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6531 for (i=0;i<num_phys;i++){ 6532 scan_types[i] = hci_stack->le_scan_type; 6533 scan_intervals[i] = hci_stack->le_scan_interval; 6534 scan_windows[i] = hci_stack->le_scan_window; 6535 } 6536 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6537 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6538 } else 6539 #endif 6540 { 6541 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6542 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6543 } 6544 return true; 6545 } 6546 #endif 6547 6548 #ifdef ENABLE_LE_PERIPHERAL 6549 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6550 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6551 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6552 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6553 if (hci_le_extended_advertising_supported()){ 6554 // map advertisment type to advertising event properties 6555 uint16_t adv_event_properties = 0; 6556 // 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000 6557 const uint16_t mapping[] = { 0x13, 0x15, 0x1D, 0x12, 0x10 }; 6558 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6559 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6560 } 6561 hci_stack->le_advertising_set_in_current_command = 0; 6562 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6563 0, 6564 adv_event_properties, 6565 hci_stack->le_advertisements_interval_min, 6566 hci_stack->le_advertisements_interval_max, 6567 hci_stack->le_advertisements_channel_map, 6568 hci_stack->le_advertisements_own_addr_type, 6569 hci_stack->le_advertisements_direct_address_type, 6570 hci_stack->le_advertisements_direct_address, 6571 hci_stack->le_advertisements_filter_policy, 6572 0x7f, // tx power: no preference 6573 0x01, // primary adv phy: LE 1M 6574 0, // secondary adv max skip 6575 0x01, // secondary adv phy 6576 0, // adv sid 6577 0 // scan request notification 6578 ); 6579 } else 6580 #endif 6581 { 6582 hci_send_cmd(&hci_le_set_advertising_parameters, 6583 hci_stack->le_advertisements_interval_min, 6584 hci_stack->le_advertisements_interval_max, 6585 hci_stack->le_advertisements_type, 6586 hci_stack->le_advertisements_own_addr_type, 6587 hci_stack->le_advertisements_direct_address_type, 6588 hci_stack->le_advertisements_direct_address, 6589 hci_stack->le_advertisements_channel_map, 6590 hci_stack->le_advertisements_filter_policy); 6591 } 6592 return true; 6593 } 6594 6595 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6596 // assumption: only set if extended advertising is supported 6597 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6598 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6599 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6600 return true; 6601 } 6602 #endif 6603 6604 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6605 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6606 uint8_t adv_data_clean[31]; 6607 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6608 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6609 hci_stack->le_advertisements_data_len); 6610 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6611 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6612 if (hci_le_extended_advertising_supported()){ 6613 hci_stack->le_advertising_set_in_current_command = 0; 6614 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6615 } else 6616 #endif 6617 { 6618 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6619 } 6620 return true; 6621 } 6622 6623 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6624 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6625 uint8_t scan_data_clean[31]; 6626 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6627 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6628 hci_stack->le_scan_response_data_len); 6629 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6630 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6631 if (hci_le_extended_advertising_supported()){ 6632 hci_stack->le_advertising_set_in_current_command = 0; 6633 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6634 } else 6635 #endif 6636 { 6637 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6638 } 6639 return true; 6640 } 6641 6642 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6643 if (hci_le_extended_advertising_supported()) { 6644 btstack_linked_list_iterator_t it; 6645 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6646 while (btstack_linked_list_iterator_has_next(&it)){ 6647 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6648 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6649 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6650 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6651 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6652 return true; 6653 } 6654 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6655 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6656 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6657 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6658 advertising_set->advertising_handle, 6659 advertising_set->extended_params.advertising_event_properties, 6660 advertising_set->extended_params.primary_advertising_interval_min, 6661 advertising_set->extended_params.primary_advertising_interval_max, 6662 advertising_set->extended_params.primary_advertising_channel_map, 6663 advertising_set->extended_params.own_address_type, 6664 advertising_set->extended_params.peer_address_type, 6665 advertising_set->extended_params.peer_address, 6666 advertising_set->extended_params.advertising_filter_policy, 6667 advertising_set->extended_params.advertising_tx_power, 6668 advertising_set->extended_params.primary_advertising_phy, 6669 advertising_set->extended_params.secondary_advertising_max_skip, 6670 advertising_set->extended_params.secondary_advertising_phy, 6671 advertising_set->extended_params.advertising_sid, 6672 advertising_set->extended_params.scan_request_notification_enable 6673 ); 6674 return true; 6675 } 6676 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6677 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6678 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6679 return true; 6680 } 6681 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6682 uint16_t pos = advertising_set->adv_data_pos; 6683 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6684 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6685 if ((operation & 0x02) != 0){ 6686 // last fragment or complete data 6687 operation |= 2; 6688 advertising_set->adv_data_pos = 0; 6689 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6690 } else { 6691 advertising_set->adv_data_pos += data_to_upload; 6692 } 6693 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6694 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6695 return true; 6696 } 6697 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6698 uint16_t pos = advertising_set->scan_data_pos; 6699 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6700 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6701 if ((operation & 0x02) != 0){ 6702 advertising_set->scan_data_pos = 0; 6703 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6704 } else { 6705 advertising_set->scan_data_pos += data_to_upload; 6706 } 6707 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6708 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6709 return true; 6710 } 6711 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6712 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6713 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6714 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6715 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6716 advertising_set->advertising_handle, 6717 advertising_set->periodic_params.periodic_advertising_interval_min, 6718 advertising_set->periodic_params.periodic_advertising_interval_max, 6719 advertising_set->periodic_params.periodic_advertising_properties); 6720 return true; 6721 } 6722 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6723 uint16_t pos = advertising_set->periodic_data_pos; 6724 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6725 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6726 if ((operation & 0x02) != 0){ 6727 // last fragment or complete data 6728 operation |= 2; 6729 advertising_set->periodic_data_pos = 0; 6730 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6731 } else { 6732 advertising_set->periodic_data_pos += data_to_upload; 6733 } 6734 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6735 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6736 return true; 6737 } 6738 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6739 } 6740 } 6741 #endif 6742 6743 #endif 6744 6745 #ifdef ENABLE_LE_CENTRAL 6746 // if connect with whitelist was active and is not cancelled yet, wait until next time 6747 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6748 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6749 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6750 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6751 #endif 6752 #endif 6753 6754 // LE Whitelist Management 6755 if (whitelist_modification_pending){ 6756 bool done = hci_whitelist_modification_process(); 6757 if (done) return true; 6758 } 6759 6760 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6761 // LE Resolving List Management 6762 if (resolving_list_modification_pending) { 6763 uint16_t i; 6764 uint8_t null_16[16]; 6765 uint8_t local_irk_flipped[16]; 6766 const uint8_t *local_irk; 6767 switch (hci_stack->le_resolving_list_state) { 6768 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6769 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6770 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6771 return true; 6772 case LE_RESOLVING_LIST_READ_SIZE: 6773 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6774 hci_send_cmd(&hci_le_read_resolving_list_size); 6775 return true; 6776 case LE_RESOLVING_LIST_SEND_CLEAR: 6777 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6778 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6779 sizeof(hci_stack->le_resolving_list_add_entries)); 6780 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6781 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6782 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6783 sizeof(hci_stack->le_resolving_list_remove_entries)); 6784 hci_send_cmd(&hci_le_clear_resolving_list); 6785 return true; 6786 case LE_RESOLVING_LIST_SET_IRK: 6787 // set IRK used by RPA for undirected advertising 6788 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6789 local_irk = gap_get_persistent_irk(); 6790 reverse_128(local_irk, local_irk_flipped); 6791 memset(null_16, 0, sizeof(null_16)); 6792 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6793 null_16, local_irk_flipped); 6794 return true; 6795 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6796 // first remove old entries 6797 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6798 uint8_t offset = i >> 3; 6799 uint8_t mask = 1 << (i & 7); 6800 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6801 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6802 bd_addr_t peer_identity_addreses; 6803 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6804 sm_key_t peer_irk; 6805 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6806 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6807 6808 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6809 // trigger whitelist entry 'update' (work around for controller bug) 6810 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6811 while (btstack_linked_list_iterator_has_next(&lit)) { 6812 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6813 if (entry->address_type != peer_identity_addr_type) continue; 6814 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6815 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6816 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6817 } 6818 #endif 6819 6820 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6821 peer_identity_addreses); 6822 return true; 6823 } 6824 6825 // then add new entries 6826 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6827 uint8_t offset = i >> 3; 6828 uint8_t mask = 1 << (i & 7); 6829 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6830 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6831 bd_addr_t peer_identity_addreses; 6832 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6833 sm_key_t peer_irk; 6834 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6835 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6836 if (btstack_is_null(peer_irk, 16)) continue; 6837 local_irk = gap_get_persistent_irk(); 6838 // command uses format specifier 'P' that stores 16-byte value without flip 6839 uint8_t peer_irk_flipped[16]; 6840 reverse_128(local_irk, local_irk_flipped); 6841 reverse_128(peer_irk, peer_irk_flipped); 6842 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6843 peer_irk_flipped, local_irk_flipped); 6844 return true; 6845 } 6846 6847 // finally, set privacy mode 6848 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6849 uint8_t offset = i >> 3; 6850 uint8_t mask = 1 << (i & 7); 6851 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6852 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6853 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6854 // Network Privacy Mode is default 6855 continue; 6856 } 6857 bd_addr_t peer_identity_address; 6858 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6859 sm_key_t peer_irk; 6860 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6861 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6862 if (btstack_is_null(peer_irk, 16)) continue; 6863 // command uses format specifier 'P' that stores 16-byte value without flip 6864 uint8_t peer_irk_flipped[16]; 6865 reverse_128(peer_irk, peer_irk_flipped); 6866 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6867 return true; 6868 } 6869 break; 6870 6871 default: 6872 break; 6873 } 6874 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6875 } 6876 #endif 6877 6878 #ifdef ENABLE_LE_CENTRAL 6879 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6880 // LE Whitelist Management 6881 if (periodic_list_modification_pending){ 6882 // add/remove entries 6883 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6884 while (btstack_linked_list_iterator_has_next(&lit)){ 6885 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6886 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6887 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6888 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6889 return true; 6890 } 6891 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6892 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6893 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6894 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6895 return true; 6896 } 6897 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6898 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6899 btstack_memory_periodic_advertiser_list_entry_free(entry); 6900 } 6901 } 6902 } 6903 #endif 6904 #endif 6905 6906 #ifdef ENABLE_LE_CENTRAL 6907 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6908 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6909 if (hci_stack->le_past_set_default_params){ 6910 hci_stack->le_past_set_default_params = false; 6911 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6912 hci_stack->le_past_mode, 6913 hci_stack->le_past_skip, 6914 hci_stack->le_past_sync_timeout, 6915 hci_stack->le_past_cte_type); 6916 return true; 6917 } 6918 #endif 6919 #endif 6920 #endif 6921 6922 // postpone all actions until stack is fully working 6923 if (hci_stack->state != HCI_STATE_WORKING) return false; 6924 6925 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6926 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6927 6928 // Phase 4: restore state 6929 6930 #ifdef ENABLE_LE_CENTRAL 6931 // re-start scanning 6932 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6933 hci_stack->le_scanning_active = true; 6934 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6935 if (hci_le_extended_advertising_supported()){ 6936 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6937 } else 6938 #endif 6939 { 6940 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6941 } 6942 return true; 6943 } 6944 #endif 6945 6946 #ifdef ENABLE_LE_CENTRAL 6947 // re-start connecting 6948 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6949 bd_addr_t null_addr; 6950 memset(null_addr, 0, 6); 6951 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6952 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6953 hci_send_le_create_connection(1, 0, null_addr); 6954 return true; 6955 } 6956 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6957 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6958 switch(hci_stack->le_periodic_sync_request){ 6959 case LE_CONNECTING_DIRECT: 6960 case LE_CONNECTING_WHITELIST: 6961 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6962 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6963 hci_stack->le_periodic_sync_options, 6964 hci_stack->le_periodic_sync_advertising_sid, 6965 hci_stack->le_periodic_sync_advertiser_address_type, 6966 hci_stack->le_periodic_sync_advertiser_address, 6967 hci_stack->le_periodic_sync_skip, 6968 hci_stack->le_periodic_sync_timeout, 6969 hci_stack->le_periodic_sync_cte_type); 6970 return true; 6971 default: 6972 break; 6973 } 6974 } 6975 #endif 6976 #endif 6977 6978 #ifdef ENABLE_LE_PERIPHERAL 6979 // re-start advertising 6980 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6981 // check if advertisements should be enabled given 6982 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6983 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6984 6985 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6986 if (hci_le_extended_advertising_supported()){ 6987 const uint8_t advertising_handles[] = { 0 }; 6988 const uint16_t durations[] = { 0 }; 6989 const uint16_t max_events[] = { 0 }; 6990 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6991 } else 6992 #endif 6993 { 6994 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6995 } 6996 return true; 6997 } 6998 6999 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7000 if (hci_le_extended_advertising_supported()) { 7001 btstack_linked_list_iterator_t it; 7002 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7003 while (btstack_linked_list_iterator_has_next(&it)) { 7004 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7005 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 7006 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 7007 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 7008 const uint16_t durations[] = { advertising_set->enable_timeout }; 7009 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 7010 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 7011 return true; 7012 } 7013 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7014 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 7015 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 7016 uint8_t enable = 1; 7017 if (advertising_set->periodic_include_adi){ 7018 enable |= 2; 7019 } 7020 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 7021 return true; 7022 } 7023 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7024 } 7025 } 7026 #endif 7027 #endif 7028 7029 return false; 7030 } 7031 7032 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7033 static bool hci_run_iso_tasks(void){ 7034 btstack_linked_list_iterator_t it; 7035 7036 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 7037 return false; 7038 } 7039 7040 // BIG 7041 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 7042 while (btstack_linked_list_iterator_has_next(&it)){ 7043 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 7044 switch (big->state){ 7045 case LE_AUDIO_BIG_STATE_CREATE: 7046 hci_stack->iso_active_operation_group_id = big->params->big_handle; 7047 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7048 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7049 hci_send_cmd(&hci_le_create_big, 7050 big->params->big_handle, 7051 big->params->advertising_handle, 7052 big->params->num_bis, 7053 big->params->sdu_interval_us, 7054 big->params->max_sdu, 7055 big->params->max_transport_latency_ms, 7056 big->params->rtn, 7057 big->params->phy, 7058 big->params->packing, 7059 big->params->framing, 7060 big->params->encryption, 7061 big->params->broadcast_code); 7062 return true; 7063 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7064 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7065 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); 7066 return true; 7067 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7068 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7069 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 7070 return true; 7071 case LE_AUDIO_BIG_STATE_TERMINATE: 7072 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7073 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7074 return true; 7075 default: 7076 break; 7077 } 7078 } 7079 7080 // BIG Sync 7081 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 7082 while (btstack_linked_list_iterator_has_next(&it)){ 7083 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 7084 switch (big_sync->state){ 7085 case LE_AUDIO_BIG_STATE_CREATE: 7086 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 7087 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7088 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7089 hci_send_cmd(&hci_le_big_create_sync, 7090 big_sync->params->big_handle, 7091 big_sync->params->sync_handle, 7092 big_sync->params->encryption, 7093 big_sync->params->broadcast_code, 7094 big_sync->params->mse, 7095 big_sync->params->big_sync_timeout_10ms, 7096 big_sync->params->num_bis, 7097 big_sync->params->bis_indices); 7098 return true; 7099 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7100 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7101 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); 7102 return true; 7103 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7104 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7105 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7106 return true; 7107 case LE_AUDIO_BIG_STATE_TERMINATE: 7108 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7109 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7110 return true; 7111 default: 7112 break; 7113 } 7114 } 7115 7116 // CIG 7117 bool cig_active; 7118 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7119 while (btstack_linked_list_iterator_has_next(&it)) { 7120 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7121 uint8_t i; 7122 // Set CIG Parameters 7123 uint8_t cis_id[MAX_NR_CIS]; 7124 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7125 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7126 uint8_t phy_c_to_p[MAX_NR_CIS]; 7127 uint8_t phy_p_to_c[MAX_NR_CIS]; 7128 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7129 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7130 switch (cig->state) { 7131 case LE_AUDIO_CIG_STATE_CREATE: 7132 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7133 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7134 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7135 le_audio_cig_params_t * params = cig->params; 7136 for (i = 0; i < params->num_cis; i++) { 7137 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7138 cis_id[i] = cis_params->cis_id; 7139 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7140 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7141 phy_c_to_p[i] = cis_params->phy_c_to_p; 7142 phy_p_to_c[i] = cis_params->phy_p_to_c; 7143 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7144 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7145 } 7146 hci_send_cmd(&hci_le_set_cig_parameters, 7147 cig->cig_id, 7148 params->sdu_interval_c_to_p, 7149 params->sdu_interval_p_to_c, 7150 params->worst_case_sca, 7151 params->packing, 7152 params->framing, 7153 params->max_transport_latency_c_to_p, 7154 params->max_transport_latency_p_to_c, 7155 params->num_cis, 7156 cis_id, 7157 max_sdu_c_to_p, 7158 max_sdu_p_to_c, 7159 phy_c_to_p, 7160 phy_p_to_c, 7161 rtn_c_to_p, 7162 rtn_p_to_c 7163 ); 7164 return true; 7165 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7166 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7167 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7168 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7169 for (i=0;i<cig->num_cis;i++){ 7170 cig->cis_setup_active[i] = true; 7171 } 7172 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7173 return true; 7174 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7175 for ( ; cig->state_vars.next_cis < (cig->num_cis * 2) ; cig->state_vars.next_cis++ ){ 7176 // find next path to setup 7177 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7178 if (cig->cis_established[cis_index] == false) { 7179 continue; 7180 } 7181 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7182 bool setup = true; 7183 if (cis_direction == 0){ 7184 // 0 - input - host to controller 7185 // we are central => central to peripheral 7186 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7187 } else { 7188 // 1 - output - controller to host 7189 // we are central => peripheral to central 7190 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7191 } 7192 if (setup){ 7193 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7194 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7195 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7196 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); 7197 return true; 7198 } 7199 } 7200 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7201 break; 7202 case LE_AUDIO_CIG_STATE_REMOVE: 7203 // check if CIG Active 7204 cig_active = false; 7205 for (i = 0; i < cig->num_cis; i++) { 7206 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7207 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7208 if (stream != NULL){ 7209 cig_active = true; 7210 break; 7211 } 7212 } 7213 } 7214 if (cig_active == false){ 7215 btstack_linked_list_iterator_remove(&it); 7216 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7217 return true; 7218 } 7219 default: 7220 break; 7221 } 7222 } 7223 7224 // CIS Accept/Reject/Setup ISO Path/Close 7225 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7226 while (btstack_linked_list_iterator_has_next(&it)) { 7227 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7228 hci_con_handle_t con_handle; 7229 switch (iso_stream->state){ 7230 case HCI_ISO_STREAM_W2_ACCEPT: 7231 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7232 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7233 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7234 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7235 return true; 7236 case HCI_ISO_STREAM_W2_REJECT: 7237 con_handle = iso_stream->cis_handle; 7238 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7239 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7240 hci_iso_stream_finalize(iso_stream); 7241 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7242 return true; 7243 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7244 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7245 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7246 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7247 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); 7248 return true; 7249 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7250 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7251 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7252 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7253 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); 7254 return true; 7255 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7256 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7257 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7258 return true; 7259 default: 7260 break; 7261 } 7262 } 7263 7264 return false; 7265 } 7266 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7267 #endif 7268 7269 static bool hci_run_general_pending_commands(void){ 7270 btstack_linked_item_t * it; 7271 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7272 hci_connection_t * connection = (hci_connection_t *) it; 7273 7274 switch(connection->state){ 7275 case SEND_CREATE_CONNECTION: 7276 switch(connection->address_type){ 7277 #ifdef ENABLE_CLASSIC 7278 case BD_ADDR_TYPE_ACL: 7279 log_info("sending hci_create_connection"); 7280 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7281 break; 7282 #endif 7283 default: 7284 #ifdef ENABLE_BLE 7285 #ifdef ENABLE_LE_CENTRAL 7286 log_info("sending hci_le_create_connection"); 7287 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7288 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7289 hci_send_le_create_connection(0, connection->address_type, connection->address); 7290 connection->state = SENT_CREATE_CONNECTION; 7291 #endif 7292 #endif 7293 break; 7294 } 7295 return true; 7296 7297 #ifdef ENABLE_CLASSIC 7298 case RECEIVED_CONNECTION_REQUEST: 7299 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7300 log_info("sending hci_accept_connection_request"); 7301 connection->state = ACCEPTED_CONNECTION_REQUEST; 7302 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7303 return true; 7304 } 7305 break; 7306 #endif 7307 case SEND_DISCONNECT: 7308 connection->state = SENT_DISCONNECT; 7309 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7310 return true; 7311 7312 default: 7313 break; 7314 } 7315 7316 // no further commands if connection is about to get shut down 7317 if (connection->state == SENT_DISCONNECT) continue; 7318 7319 #ifdef ENABLE_CLASSIC 7320 7321 // Handling link key request requires remote supported features 7322 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7323 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7324 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7325 7326 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7327 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7328 if (have_link_key && security_level_sufficient){ 7329 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7330 } else { 7331 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7332 } 7333 return true; 7334 } 7335 7336 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7337 log_info("denying to pin request"); 7338 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7339 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7340 return true; 7341 } 7342 7343 // security assessment requires remote features 7344 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7345 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7346 hci_ssp_assess_security_on_io_cap_request(connection); 7347 // 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 7348 } 7349 7350 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7351 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7352 // set authentication requirements: 7353 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7354 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7355 connection->io_cap_request_auth_req = hci_stack->ssp_authentication_requirement & 1; 7356 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7357 connection->io_cap_request_auth_req |= 1; 7358 } 7359 bool bonding = hci_stack->bondable; 7360 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7361 // if we have received IO Cap Response, we're in responder role 7362 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7363 if (bonding && !remote_bonding){ 7364 log_info("Remote not bonding, dropping local flag"); 7365 bonding = false; 7366 } 7367 } 7368 if (bonding){ 7369 if (connection->bonding_flags & BONDING_DEDICATED){ 7370 connection->io_cap_request_auth_req |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7371 } else { 7372 connection->io_cap_request_auth_req |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7373 } 7374 } 7375 uint8_t have_oob_data = 0; 7376 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7377 if (connection->classic_oob_c_192 != NULL){ 7378 have_oob_data |= 1; 7379 } 7380 if (connection->classic_oob_c_256 != NULL){ 7381 have_oob_data |= 2; 7382 } 7383 #endif 7384 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, connection->io_cap_request_auth_req); 7385 return true; 7386 } 7387 7388 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7389 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7390 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7391 return true; 7392 } 7393 7394 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7395 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7396 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7397 const uint8_t zero[16] = { 0 }; 7398 const uint8_t * r_192 = zero; 7399 const uint8_t * c_192 = zero; 7400 const uint8_t * r_256 = zero; 7401 const uint8_t * c_256 = zero; 7402 // verify P-256 OOB 7403 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7404 c_256 = connection->classic_oob_c_256; 7405 if (connection->classic_oob_r_256 != NULL) { 7406 r_256 = connection->classic_oob_r_256; 7407 } 7408 } 7409 // verify P-192 OOB 7410 if ((connection->classic_oob_c_192 != NULL)) { 7411 c_192 = connection->classic_oob_c_192; 7412 if (connection->classic_oob_r_192 != NULL) { 7413 r_192 = connection->classic_oob_r_192; 7414 } 7415 } 7416 7417 // assess security 7418 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7419 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7420 if (need_level_4 && !can_reach_level_4){ 7421 log_info("Level 4 required, but not possible -> abort"); 7422 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7423 // send oob negative reply 7424 c_256 = NULL; 7425 c_192 = NULL; 7426 } 7427 7428 // Reply 7429 if (c_256 != zero) { 7430 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7431 } else if (c_192 != zero){ 7432 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7433 } else { 7434 hci_stack->classic_oob_con_handle = connection->con_handle; 7435 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7436 } 7437 return true; 7438 } 7439 #endif 7440 7441 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7442 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7443 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7444 return true; 7445 } 7446 7447 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7448 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7449 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7450 return true; 7451 } 7452 7453 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7454 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7455 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7456 return true; 7457 } 7458 7459 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7460 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7461 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7462 connection->state = SENT_DISCONNECT; 7463 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7464 return true; 7465 } 7466 7467 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7468 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7469 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7470 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7471 return true; 7472 } 7473 7474 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7475 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7476 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7477 return true; 7478 } 7479 7480 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7481 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7482 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7483 return true; 7484 } 7485 7486 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7487 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7488 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7489 return true; 7490 } 7491 7492 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7493 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7494 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7495 return true; 7496 } 7497 7498 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7499 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7500 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7501 return true; 7502 } 7503 #endif 7504 7505 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7506 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7507 #ifdef ENABLE_CLASSIC 7508 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7509 #endif 7510 if (connection->state != SENT_DISCONNECT){ 7511 connection->state = SENT_DISCONNECT; 7512 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7513 return true; 7514 } 7515 } 7516 7517 #ifdef ENABLE_CLASSIC 7518 uint16_t sniff_min_interval; 7519 switch (connection->sniff_min_interval){ 7520 case 0: 7521 break; 7522 case 0xffff: 7523 connection->sniff_min_interval = 0; 7524 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7525 return true; 7526 default: 7527 sniff_min_interval = connection->sniff_min_interval; 7528 connection->sniff_min_interval = 0; 7529 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7530 return true; 7531 } 7532 7533 if (connection->sniff_subrating_max_latency != 0xffff){ 7534 uint16_t max_latency = connection->sniff_subrating_max_latency; 7535 connection->sniff_subrating_max_latency = 0; 7536 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7537 return true; 7538 } 7539 7540 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7541 uint8_t service_type = (uint8_t) connection->qos_service_type; 7542 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7543 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); 7544 return true; 7545 } 7546 7547 if (connection->request_role != HCI_ROLE_INVALID){ 7548 hci_role_t role = connection->request_role; 7549 connection->request_role = HCI_ROLE_INVALID; 7550 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7551 return true; 7552 } 7553 #endif 7554 7555 if (connection->gap_connection_tasks != 0){ 7556 #ifdef ENABLE_CLASSIC 7557 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7558 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7559 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7560 return true; 7561 } 7562 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7563 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7564 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7565 return true; 7566 } 7567 #endif 7568 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7569 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7570 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7571 return true; 7572 } 7573 #ifdef ENABLE_BLE 7574 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7575 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7576 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7577 return true; 7578 } 7579 #endif 7580 } 7581 7582 #ifdef ENABLE_BLE 7583 switch (connection->le_con_parameter_update_state){ 7584 // response to L2CAP CON PARAMETER UPDATE REQUEST 7585 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7586 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7587 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7588 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7589 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7590 return true; 7591 case CON_PARAMETER_UPDATE_REPLY: 7592 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7593 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7594 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7595 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7596 return true; 7597 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7598 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7599 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7600 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7601 return true; 7602 default: 7603 break; 7604 } 7605 if (connection->le_phy_update_all_phys != 0xffu){ 7606 uint8_t all_phys = connection->le_phy_update_all_phys; 7607 connection->le_phy_update_all_phys = 0xff; 7608 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); 7609 return true; 7610 } 7611 if (connection->le_subrate_min > 0){ 7612 uint16_t subrate_min = connection->le_subrate_min; 7613 connection->le_subrate_min = 0; 7614 hci_send_cmd(&hci_le_subrate_request, connection->con_handle, subrate_min, connection->le_subrate_max, connection->le_subrate_max_latency, 7615 connection->le_subrate_continuation_number, connection->le_supervision_timeout); 7616 return true; 7617 } 7618 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7619 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7620 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7621 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7622 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7623 return true; 7624 } 7625 if (connection->le_past_advertising_handle != 0xff){ 7626 uint8_t advertising_handle = connection->le_past_advertising_handle; 7627 connection->le_past_advertising_handle = 0xff; 7628 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7629 return true; 7630 } 7631 #endif 7632 #endif 7633 } 7634 return false; 7635 } 7636 7637 static void hci_run(void){ 7638 7639 // stack state sub statemachines 7640 switch (hci_stack->state) { 7641 case HCI_STATE_INITIALIZING: 7642 hci_initializing_run(); 7643 break; 7644 case HCI_STATE_HALTING: 7645 hci_halting_run(); 7646 break; 7647 case HCI_STATE_FALLING_ASLEEP: 7648 hci_falling_asleep_run(); 7649 break; 7650 default: 7651 break; 7652 } 7653 7654 // allow to run after initialization to working transition 7655 if (hci_stack->state != HCI_STATE_WORKING){ 7656 return; 7657 } 7658 7659 bool done; 7660 7661 // send continuation fragments first, as they block the prepared packet buffer 7662 done = hci_run_acl_fragments(); 7663 if (done) return; 7664 7665 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7666 done = hci_run_iso_fragments(); 7667 if (done) return; 7668 #endif 7669 7670 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7671 // send host num completed packets next as they don't require num_cmd_packets > 0 7672 if (!hci_can_send_command_packet_transport()) return; 7673 if (hci_stack->host_completed_packets){ 7674 hci_host_num_completed_packets(); 7675 return; 7676 } 7677 #endif 7678 7679 if (!hci_can_send_command_packet_now()) return; 7680 7681 // global/non-connection oriented commands 7682 7683 7684 #ifdef ENABLE_CLASSIC 7685 // general gap classic 7686 done = hci_run_general_gap_classic(); 7687 if (done) return; 7688 #endif 7689 7690 #ifdef ENABLE_BLE 7691 // general gap le 7692 done = hci_run_general_gap_le(); 7693 if (done) return; 7694 7695 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7696 // ISO related tasks, e.g. BIG create/terminate/sync 7697 done = hci_run_iso_tasks(); 7698 if (done) return; 7699 #endif 7700 #endif 7701 7702 // send pending HCI commands 7703 hci_run_general_pending_commands(); 7704 } 7705 7706 #ifdef ENABLE_CLASSIC 7707 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7708 // bits 6-9 are 'don't use' 7709 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7710 7711 // restrict packet types to local and remote supported 7712 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7713 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7714 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7715 } 7716 #endif 7717 7718 // funnel for sending cmd packet using single outgoing buffer 7719 static uint8_t hci_send_prepared_cmd_packet(void) { 7720 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7721 // cache opcode 7722 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7723 // get size 7724 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7725 // send packet 7726 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7727 // release packet buffer on error or for synchronous transport implementations 7728 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7729 hci_release_packet_buffer(); 7730 } 7731 return status; 7732 } 7733 7734 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7735 // house-keeping 7736 7737 #ifdef ENABLE_CLASSIC 7738 bd_addr_t addr; 7739 hci_connection_t * conn; 7740 #endif 7741 #ifdef ENABLE_LE_CENTRAL 7742 uint8_t initiator_filter_policy; 7743 #endif 7744 7745 uint16_t opcode = little_endian_read_16(packet, 0); 7746 switch (opcode) { 7747 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7748 hci_stack->loopback_mode = packet[3]; 7749 break; 7750 7751 #ifdef ENABLE_CLASSIC 7752 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7753 reverse_bd_addr(&packet[3], addr); 7754 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7755 7756 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7757 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7758 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7759 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7760 } 7761 7762 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7763 if (!conn) { 7764 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7765 if (!conn) { 7766 // notify client that alloc failed 7767 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7768 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7769 } 7770 conn->state = SEND_CREATE_CONNECTION; 7771 } 7772 7773 log_info("conn state %u", conn->state); 7774 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7775 switch (conn->state) { 7776 // if connection active exists 7777 case OPEN: 7778 // and OPEN, emit connection complete command 7779 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7780 // packet not sent to controller 7781 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7782 case RECEIVED_DISCONNECTION_COMPLETE: 7783 // create connection triggered in disconnect complete event, let's do it now 7784 break; 7785 case SEND_CREATE_CONNECTION: 7786 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7787 if (hci_classic_operation_active()){ 7788 return ERROR_CODE_SUCCESS; 7789 } 7790 #endif 7791 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7792 break; 7793 default: 7794 // otherwise, just ignore as it is already in the open process 7795 // packet not sent to controller 7796 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7797 } 7798 conn->state = SENT_CREATE_CONNECTION; 7799 7800 // track outgoing connection 7801 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7802 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7803 break; 7804 7805 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7806 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7807 if (conn == NULL) { 7808 // neither SCO nor ACL connection for con handle 7809 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7810 } else { 7811 uint16_t remote_supported_sco_packets; 7812 switch (conn->address_type){ 7813 case BD_ADDR_TYPE_ACL: 7814 // assert SCO connection does not exit 7815 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7816 return ERROR_CODE_COMMAND_DISALLOWED; 7817 } 7818 // cache remote sco packet types 7819 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7820 7821 // allocate connection struct 7822 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7823 HCI_ROLE_MASTER); 7824 if (!conn) { 7825 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7826 } 7827 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7828 break; 7829 case BD_ADDR_TYPE_SCO: 7830 // update of existing SCO connection 7831 break; 7832 default: 7833 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7834 } 7835 } 7836 7837 // conn refers to hci connection of type sco now 7838 7839 conn->state = SENT_CREATE_CONNECTION; 7840 7841 // track outgoing connection to handle command status with error 7842 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7843 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7844 7845 // setup_synchronous_connection? Voice setting at offset 22 7846 // TODO: compare to current setting if sco connection already active 7847 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7848 7849 // derive sco payload length from packet types 7850 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7851 break; 7852 7853 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7854 // get SCO connection 7855 reverse_bd_addr(&packet[3], addr); 7856 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7857 if (conn == NULL){ 7858 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7859 } 7860 7861 conn->state = ACCEPTED_CONNECTION_REQUEST; 7862 7863 // track outgoing connection to handle command status with error 7864 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7865 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7866 7867 // accept_synchronous_connection? Voice setting at offset 18 7868 // TODO: compare to current setting if sco connection already active 7869 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7870 7871 // derive sco payload length from packet types 7872 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7873 break; 7874 #endif 7875 7876 #ifdef ENABLE_BLE 7877 #ifdef ENABLE_LE_CENTRAL 7878 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7879 // white list used? 7880 initiator_filter_policy = packet[7]; 7881 switch (initiator_filter_policy) { 7882 case 0: 7883 // whitelist not used 7884 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7885 break; 7886 case 1: 7887 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7888 break; 7889 default: 7890 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7891 break; 7892 } 7893 // track outgoing connection 7894 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7895 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7896 break; 7897 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7898 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7899 // white list used? 7900 initiator_filter_policy = packet[3]; 7901 switch (initiator_filter_policy) { 7902 case 0: 7903 // whitelist not used 7904 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7905 break; 7906 case 1: 7907 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7908 break; 7909 default: 7910 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7911 break; 7912 } 7913 // track outgoing connection 7914 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7915 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7916 break; 7917 #endif 7918 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7919 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7920 break; 7921 #endif 7922 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7923 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7924 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7925 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7926 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7927 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7928 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7929 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7930 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7931 case HCI_OPCODE_HCI_LE_READ_PHY: 7932 case HCI_OPCODE_HCI_LE_SET_PHY: 7933 // conection handle is first command parameter 7934 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7935 break; 7936 #endif 7937 #endif /* ENABLE_BLE */ 7938 default: 7939 break; 7940 } 7941 7942 hci_stack->num_cmd_packets--; 7943 7944 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7945 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7946 uint8_t status; 7947 if (err == 0){ 7948 status = ERROR_CODE_SUCCESS; 7949 } else { 7950 status = ERROR_CODE_HARDWARE_FAILURE; 7951 } 7952 return status; 7953 } 7954 7955 // disconnect because of security block 7956 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7957 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7958 if (!connection) return; 7959 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7960 } 7961 7962 7963 // Configure Secure Simple Pairing 7964 7965 #ifdef ENABLE_CLASSIC 7966 7967 // enable will enable SSP during init 7968 void gap_ssp_set_enable(int enable){ 7969 hci_stack->ssp_enable = enable; 7970 } 7971 7972 static int hci_local_ssp_activated(void){ 7973 return gap_ssp_supported() && hci_stack->ssp_enable; 7974 } 7975 7976 // if set, BTstack will respond to io capability request using authentication requirement 7977 void gap_ssp_set_io_capability(int io_capability){ 7978 hci_stack->ssp_io_capability = io_capability; 7979 } 7980 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7981 hci_stack->ssp_authentication_requirement = authentication_requirement; 7982 } 7983 7984 // if set, BTstack will confirm a numeric comparison and enter '000000' if requested 7985 void gap_ssp_set_auto_accept(int auto_accept){ 7986 hci_stack->ssp_auto_accept = auto_accept; 7987 } 7988 7989 void gap_secure_connections_enable(bool enable){ 7990 hci_stack->secure_connections_enable = enable; 7991 } 7992 bool gap_secure_connections_active(void){ 7993 return hci_stack->secure_connections_active; 7994 } 7995 7996 #endif 7997 7998 // va_list part of hci_send_cmd 7999 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 8000 if (!hci_can_send_command_packet_now()){ 8001 log_error("hci_send_cmd called but cannot send packet now"); 8002 return ERROR_CODE_COMMAND_DISALLOWED; 8003 } 8004 8005 hci_reserve_packet_buffer(); 8006 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 8007 return hci_send_prepared_cmd_packet(); 8008 } 8009 8010 /** 8011 * pre: num_commands >= 0 - it's allowed to send a command to the controller 8012 */ 8013 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 8014 va_list argptr; 8015 va_start(argptr, cmd); 8016 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 8017 va_end(argptr); 8018 return status; 8019 } 8020 8021 // Forward HCI events and create non-HCI events 8022 8023 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 8024 // dump packet 8025 if (dump) { 8026 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 8027 } 8028 8029 // dispatch to all event handlers 8030 btstack_linked_list_iterator_t it; 8031 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 8032 while (btstack_linked_list_iterator_has_next(&it)){ 8033 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 8034 entry->callback(HCI_EVENT_PACKET, 0, event, size); 8035 } 8036 } 8037 8038 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump){ 8039 #ifndef ENABLE_LOG_BTSTACK_EVENTS 8040 dump = 0; 8041 #endif 8042 hci_emit_event(event, size, dump); 8043 } 8044 8045 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 8046 if (!hci_stack->acl_packet_handler) return; 8047 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 8048 } 8049 8050 #ifdef ENABLE_CLASSIC 8051 static void hci_notify_if_sco_can_send_now(void){ 8052 // notify SCO sender if waiting 8053 if (!hci_stack->sco_waiting_for_can_send_now) return; 8054 if (hci_can_send_sco_packet_now()){ 8055 hci_stack->sco_waiting_for_can_send_now = 0; 8056 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 8057 hci_dump_btstack_event(event, sizeof(event)); 8058 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 8059 } 8060 } 8061 8062 // parsing end emitting has been merged to reduce code size 8063 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 8064 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 8065 8066 uint8_t * eir_data; 8067 ad_context_t context; 8068 const uint8_t * name; 8069 uint8_t name_len; 8070 8071 if (size < 3) return; 8072 8073 int event_type = hci_event_packet_get_type(packet); 8074 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 8075 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 8076 8077 switch (event_type){ 8078 case HCI_EVENT_INQUIRY_RESULT: 8079 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8080 if (size != (3 + (num_responses * 14))) return; 8081 break; 8082 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8083 if (size != 257) return; 8084 if (num_responses != 1) return; 8085 break; 8086 default: 8087 return; 8088 } 8089 8090 // event[1] is set at the end 8091 int i; 8092 for (i=0; i<num_responses;i++){ 8093 memset(event, 0, sizeof(event)); 8094 event[0] = GAP_EVENT_INQUIRY_RESULT; 8095 uint8_t event_size = 27; // if name is not set by EIR 8096 8097 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 8098 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 8099 (void)memcpy(&event[9], 8100 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 8101 3); // class of device 8102 (void)memcpy(&event[12], 8103 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 8104 2); // clock offset 8105 8106 switch (event_type){ 8107 case HCI_EVENT_INQUIRY_RESULT: 8108 // 14,15,16,17 = 0, size 18 8109 break; 8110 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8111 event[14] = 1; 8112 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8113 // 16,17 = 0, size 18 8114 break; 8115 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8116 event[14] = 1; 8117 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8118 // EIR packets only contain a single inquiry response 8119 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8120 name = NULL; 8121 // Iterate over EIR data 8122 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8123 uint8_t data_type = ad_iterator_get_data_type(&context); 8124 uint8_t data_size = ad_iterator_get_data_len(&context); 8125 const uint8_t * data = ad_iterator_get_data(&context); 8126 // Prefer Complete Local Name over Shortened Local Name 8127 switch (data_type){ 8128 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8129 if (name) continue; 8130 /* fall through */ 8131 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8132 name = data; 8133 name_len = data_size; 8134 break; 8135 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8136 if (data_size != 8) break; 8137 event[16] = 1; 8138 memcpy(&event[17], data, 8); 8139 break; 8140 default: 8141 break; 8142 } 8143 } 8144 if (name){ 8145 event[25] = 1; 8146 // truncate name if needed 8147 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8148 event[26] = len; 8149 (void)memcpy(&event[27], name, len); 8150 event_size += len; 8151 } 8152 break; 8153 default: 8154 return; 8155 } 8156 event[1] = event_size - 2; 8157 hci_emit_btstack_event(event, event_size, 1); 8158 } 8159 } 8160 #endif 8161 8162 void hci_emit_state(void){ 8163 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8164 uint8_t event[3]; 8165 event[0] = BTSTACK_EVENT_STATE; 8166 event[1] = sizeof(event) - 2u; 8167 event[2] = hci_stack->state; 8168 hci_emit_btstack_event(event, sizeof(event), 1); 8169 } 8170 8171 #ifdef ENABLE_CLASSIC 8172 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8173 uint8_t event[13]; 8174 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8175 event[1] = sizeof(event) - 2; 8176 event[2] = status; 8177 little_endian_store_16(event, 3, con_handle); 8178 reverse_bd_addr(address, &event[5]); 8179 event[11] = 1; // ACL connection 8180 event[12] = 0; // encryption disabled 8181 hci_emit_btstack_event(event, sizeof(event), 1); 8182 } 8183 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8184 if (disable_l2cap_timeouts) return; 8185 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8186 uint8_t event[4]; 8187 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8188 event[1] = sizeof(event) - 2; 8189 little_endian_store_16(event, 2, conn->con_handle); 8190 hci_emit_btstack_event(event, sizeof(event), 1); 8191 } 8192 #endif 8193 8194 #ifdef ENABLE_BLE 8195 #ifdef ENABLE_LE_CENTRAL 8196 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){ 8197 uint8_t hci_event[21]; 8198 hci_event[0] = HCI_EVENT_LE_META; 8199 hci_event[1] = sizeof(hci_event) - 2u; 8200 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8201 hci_event[3] = status; 8202 little_endian_store_16(hci_event, 4, con_handle); 8203 hci_event[6] = 0; // TODO: role 8204 hci_event[7] = address_type; 8205 reverse_bd_addr(address, &hci_event[8]); 8206 little_endian_store_16(hci_event, 14, 0); // interval 8207 little_endian_store_16(hci_event, 16, 0); // latency 8208 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8209 hci_event[20] = 0; // master clock accuracy 8210 hci_emit_btstack_event(hci_event, sizeof(hci_event), 1); 8211 // emit GAP event, too 8212 uint8_t gap_event[36]; 8213 hci_create_gap_connection_complete_event(hci_event, gap_event); 8214 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 8215 } 8216 #endif 8217 #endif 8218 8219 static void hci_emit_transport_packet_sent(void){ 8220 // notify upper stack that it might be possible to send again 8221 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8222 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 8223 } 8224 8225 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8226 uint8_t event[6]; 8227 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8228 event[1] = sizeof(event) - 2u; 8229 event[2] = 0; // status = OK 8230 little_endian_store_16(event, 3, con_handle); 8231 event[5] = reason; 8232 hci_emit_btstack_event(event, sizeof(event), 1); 8233 } 8234 8235 static void hci_emit_nr_connections_changed(void){ 8236 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8237 uint8_t event[3]; 8238 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8239 event[1] = sizeof(event) - 2u; 8240 event[2] = nr_hci_connections(); 8241 hci_emit_btstack_event(event, sizeof(event), 1); 8242 } 8243 8244 static void hci_emit_hci_open_failed(void){ 8245 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8246 uint8_t event[2]; 8247 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8248 event[1] = sizeof(event) - 2u; 8249 hci_emit_btstack_event(event, sizeof(event), 1); 8250 } 8251 8252 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8253 log_info("hci_emit_dedicated_bonding_result %u ", status); 8254 uint8_t event[9]; 8255 int pos = 0; 8256 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8257 event[pos++] = sizeof(event) - 2u; 8258 event[pos++] = status; 8259 reverse_bd_addr(address, &event[pos]); 8260 hci_emit_btstack_event(event, sizeof(event), 1); 8261 } 8262 8263 8264 #ifdef ENABLE_CLASSIC 8265 8266 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8267 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8268 uint8_t event[5]; 8269 int pos = 0; 8270 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8271 event[pos++] = sizeof(event) - 2; 8272 little_endian_store_16(event, 2, con_handle); 8273 pos += 2; 8274 event[pos++] = level; 8275 hci_emit_btstack_event(event, sizeof(event), 1); 8276 } 8277 8278 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8279 if (!connection) return LEVEL_0; 8280 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8281 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8282 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8283 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8284 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8285 // LEVEL 4 always requires 128 bit encryption key size 8286 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8287 security_level = LEVEL_3; 8288 } 8289 return security_level; 8290 } 8291 8292 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8293 uint8_t event[4]; 8294 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8295 event[1] = sizeof(event) - 2; 8296 event[2] = discoverable; 8297 event[3] = connectable; 8298 hci_emit_btstack_event(event, sizeof(event), 1); 8299 } 8300 8301 // query if remote side supports eSCO 8302 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8303 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8304 if (!connection) return false; 8305 return (connection->remote_supported_features[0] & 1) != 0; 8306 } 8307 8308 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8309 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8310 if (!connection) return 0; 8311 return connection->remote_supported_sco_packets; 8312 } 8313 8314 static bool hci_ssp_supported(hci_connection_t * connection){ 8315 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8316 return (connection->bonding_flags & mask) == mask; 8317 } 8318 8319 // query if remote side supports SSP 8320 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8321 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8322 if (!connection) return false; 8323 return hci_ssp_supported(connection) ? 1 : 0; 8324 } 8325 8326 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8327 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8328 } 8329 8330 /** 8331 * Check if remote supported features query has completed 8332 */ 8333 bool hci_remote_features_available(hci_con_handle_t handle){ 8334 hci_connection_t * connection = hci_connection_for_handle(handle); 8335 if (!connection) return false; 8336 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8337 } 8338 8339 /** 8340 * Trigger remote supported features query 8341 */ 8342 8343 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8344 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8345 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8346 } 8347 } 8348 8349 void hci_remote_features_query(hci_con_handle_t con_handle){ 8350 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8351 if (!connection) return; 8352 hci_trigger_remote_features_for_connection(connection); 8353 hci_run(); 8354 } 8355 8356 // GAP API 8357 /** 8358 * @bbrief enable/disable bonding. default is enabled 8359 * @praram enabled 8360 */ 8361 void gap_set_bondable_mode(int enable){ 8362 hci_stack->bondable = enable ? 1 : 0; 8363 } 8364 /** 8365 * @brief Get bondable mode. 8366 * @return 1 if bondable 8367 */ 8368 int gap_get_bondable_mode(void){ 8369 return hci_stack->bondable; 8370 } 8371 8372 /** 8373 * @brief map link keys to security levels 8374 */ 8375 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8376 switch (link_key_type){ 8377 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8378 return LEVEL_4; 8379 case COMBINATION_KEY: 8380 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8381 return LEVEL_3; 8382 default: 8383 return LEVEL_2; 8384 } 8385 } 8386 8387 /** 8388 * @brief map link keys to secure connection yes/no 8389 */ 8390 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8391 switch (link_key_type){ 8392 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8393 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8394 return true; 8395 default: 8396 return false; 8397 } 8398 } 8399 8400 /** 8401 * @brief map link keys to authenticated 8402 */ 8403 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8404 switch (link_key_type){ 8405 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8406 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8407 return true; 8408 default: 8409 return false; 8410 } 8411 } 8412 8413 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8414 log_info("gap_mitm_protection_required_for_security_level %u", level); 8415 return level > LEVEL_2; 8416 } 8417 8418 /** 8419 * @brief get current security level 8420 */ 8421 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8422 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8423 if (!connection) return LEVEL_0; 8424 return gap_security_level_for_connection(connection); 8425 } 8426 8427 /** 8428 * @brief request connection to device to 8429 * @result GAP_AUTHENTICATION_RESULT 8430 */ 8431 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8432 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8433 if (!connection){ 8434 hci_emit_security_level(con_handle, LEVEL_0); 8435 return; 8436 } 8437 8438 btstack_assert(hci_is_le_connection(connection) == false); 8439 8440 // 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) 8441 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8442 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8443 requested_level = LEVEL_4; 8444 } 8445 8446 gap_security_level_t current_level = gap_security_level(con_handle); 8447 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8448 requested_level, connection->requested_security_level, current_level); 8449 8450 // authentication active if authentication request was sent or planned level > 0 8451 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8452 if (authentication_active){ 8453 // authentication already active 8454 if (connection->requested_security_level < requested_level){ 8455 // increase requested level as new level is higher 8456 // TODO: handle re-authentication when done 8457 connection->requested_security_level = requested_level; 8458 } 8459 } else { 8460 // no request active, notify if security sufficient 8461 if (requested_level <= current_level){ 8462 hci_emit_security_level(con_handle, current_level); 8463 return; 8464 } 8465 8466 // store request 8467 connection->requested_security_level = requested_level; 8468 8469 // start to authenticate connection 8470 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8471 8472 // request remote features if not already active, also trigger hci_run 8473 hci_remote_features_query(con_handle); 8474 } 8475 } 8476 8477 /** 8478 * @brief start dedicated bonding with device. disconnect after bonding 8479 * @param device 8480 * @param request MITM protection 8481 * @result GAP_DEDICATED_BONDING_COMPLETE 8482 */ 8483 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8484 8485 // create connection state machine 8486 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8487 8488 if (!connection){ 8489 return BTSTACK_MEMORY_ALLOC_FAILED; 8490 } 8491 8492 // delete link key 8493 gap_drop_link_key_for_bd_addr(device); 8494 8495 // configure LEVEL_2/3, dedicated bonding 8496 connection->state = SEND_CREATE_CONNECTION; 8497 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8498 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8499 connection->bonding_flags = BONDING_DEDICATED; 8500 8501 hci_run(); 8502 8503 return 0; 8504 } 8505 8506 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8507 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8508 if (connection == NULL){ 8509 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8510 } 8511 if (defer){ 8512 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8513 } else { 8514 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8515 // trigger disconnect 8516 hci_run(); 8517 } 8518 return ERROR_CODE_SUCCESS; 8519 } 8520 8521 void gap_set_local_name(const char * local_name){ 8522 hci_stack->local_name = local_name; 8523 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8524 // also update EIR if not set by user 8525 if (hci_stack->eir_data == NULL){ 8526 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8527 } 8528 hci_run(); 8529 } 8530 #endif 8531 8532 8533 #ifdef ENABLE_BLE 8534 8535 #ifdef ENABLE_LE_CENTRAL 8536 void gap_start_scan(void){ 8537 hci_stack->le_scanning_enabled = true; 8538 hci_run(); 8539 } 8540 8541 void gap_stop_scan(void){ 8542 hci_stack->le_scanning_enabled = false; 8543 hci_run(); 8544 } 8545 8546 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8547 hci_stack->le_scan_type = scan_type; 8548 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8549 hci_stack->le_scan_interval = scan_interval; 8550 hci_stack->le_scan_window = scan_window; 8551 hci_stack->le_scanning_param_update = true; 8552 hci_run(); 8553 } 8554 8555 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8556 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8557 } 8558 8559 void gap_set_scan_duplicate_filter(bool enabled){ 8560 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8561 } 8562 8563 void gap_set_scan_phys(uint8_t phys){ 8564 // LE Coded and LE 1M PHY 8565 hci_stack->le_scan_phys = phys & 0x05; 8566 } 8567 8568 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8569 // disallow le connection if outgoing already active 8570 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8571 log_error("le connect already active"); 8572 return ERROR_CODE_COMMAND_DISALLOWED; 8573 } 8574 8575 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8576 if (conn == NULL) { 8577 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8578 if (conn == NULL){ 8579 // alloc failed 8580 log_info("gap_connect: failed to alloc hci_connection_t"); 8581 return BTSTACK_MEMORY_ALLOC_FAILED; 8582 } 8583 } else { 8584 switch (conn->state) { 8585 case RECEIVED_DISCONNECTION_COMPLETE: 8586 // connection was just disconnected, reset state and allow re-connect 8587 conn->role = HCI_ROLE_MASTER; 8588 break; 8589 default: 8590 return ERROR_CODE_COMMAND_DISALLOWED; 8591 } 8592 } 8593 8594 // set le connecting state 8595 if (hci_is_le_connection_type(addr_type)){ 8596 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8597 } 8598 8599 // trigger connect 8600 log_info("gap_connect: send create connection next"); 8601 conn->state = SEND_CREATE_CONNECTION; 8602 hci_run(); 8603 return ERROR_CODE_SUCCESS; 8604 } 8605 8606 // @assumption: only a single outgoing LE Connection exists 8607 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8608 btstack_linked_item_t *it; 8609 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8610 hci_connection_t * conn = (hci_connection_t *) it; 8611 if (hci_is_le_connection(conn)){ 8612 switch (conn->state){ 8613 case SEND_CREATE_CONNECTION: 8614 case SENT_CREATE_CONNECTION: 8615 return conn; 8616 default: 8617 break; 8618 }; 8619 } 8620 } 8621 return NULL; 8622 } 8623 8624 uint8_t gap_connect_cancel(void){ 8625 hci_connection_t * conn; 8626 switch (hci_stack->le_connecting_request){ 8627 case LE_CONNECTING_IDLE: 8628 break; 8629 case LE_CONNECTING_WHITELIST: 8630 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8631 hci_run(); 8632 break; 8633 case LE_CONNECTING_DIRECT: 8634 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8635 conn = gap_get_outgoing_le_connection(); 8636 if (conn == NULL){ 8637 hci_run(); 8638 } else { 8639 switch (conn->state){ 8640 case SEND_CREATE_CONNECTION: 8641 // skip sending create connection and emit event instead 8642 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8643 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8644 btstack_memory_hci_connection_free( conn ); 8645 break; 8646 case SENT_CREATE_CONNECTION: 8647 // let hci_run_general_gap_le cancel outgoing connection 8648 hci_run(); 8649 break; 8650 default: 8651 break; 8652 } 8653 } 8654 break; 8655 default: 8656 btstack_unreachable(); 8657 break; 8658 } 8659 return ERROR_CODE_SUCCESS; 8660 } 8661 8662 /** 8663 * @brief Set connection parameters for outgoing connections 8664 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8665 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8666 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8667 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8668 * @param conn_latency, default: 4 8669 * @param supervision_timeout (unit: 10ms), default: 720 ms 8670 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8671 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8672 */ 8673 8674 void gap_set_connection_phys(uint8_t phys){ 8675 // LE Coded, LE 1M, LE 2M PHY 8676 hci_stack->le_connection_phys = phys & 7; 8677 } 8678 8679 #endif 8680 8681 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8682 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8683 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8684 hci_stack->le_connection_scan_interval = conn_scan_interval; 8685 hci_stack->le_connection_scan_window = conn_scan_window; 8686 hci_stack->le_connection_interval_min = conn_interval_min; 8687 hci_stack->le_connection_interval_max = conn_interval_max; 8688 hci_stack->le_connection_latency = conn_latency; 8689 hci_stack->le_supervision_timeout = supervision_timeout; 8690 hci_stack->le_minimum_ce_length = min_ce_length; 8691 hci_stack->le_maximum_ce_length = max_ce_length; 8692 } 8693 8694 /** 8695 * @brief Updates the connection parameters for a given LE connection 8696 * @param handle 8697 * @param conn_interval_min (unit: 1.25ms) 8698 * @param conn_interval_max (unit: 1.25ms) 8699 * @param conn_latency 8700 * @param supervision_timeout (unit: 10ms) 8701 * @return 0 if ok 8702 */ 8703 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8704 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8705 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8706 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8707 connection->le_conn_interval_min = conn_interval_min; 8708 connection->le_conn_interval_max = conn_interval_max; 8709 connection->le_conn_latency = conn_latency; 8710 connection->le_supervision_timeout = supervision_timeout; 8711 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8712 hci_run(); 8713 return 0; 8714 } 8715 8716 /** 8717 * @brief Request an update of the connection parameter for a given LE connection 8718 * @param handle 8719 * @param conn_interval_min (unit: 1.25ms) 8720 * @param conn_interval_max (unit: 1.25ms) 8721 * @param conn_latency 8722 * @param supervision_timeout (unit: 10ms) 8723 * @return 0 if ok 8724 */ 8725 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8726 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8727 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8728 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8729 connection->le_conn_interval_min = conn_interval_min; 8730 connection->le_conn_interval_max = conn_interval_max; 8731 connection->le_conn_latency = conn_latency; 8732 connection->le_supervision_timeout = supervision_timeout; 8733 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8734 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8735 hci_emit_btstack_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8736 return 0; 8737 } 8738 8739 uint8_t gap_request_connection_subrating(hci_con_handle_t con_handle, uint16_t subrate_min, uint16_t subrate_max, 8740 uint16_t max_latency, uint16_t continuation_number, uint16_t supervision_timeout){ 8741 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8742 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8743 8744 connection->le_subrate_min = subrate_min; 8745 connection->le_subrate_max = subrate_max; 8746 connection->le_subrate_max_latency = max_latency; 8747 connection->le_subrate_continuation_number = continuation_number; 8748 connection->le_supervision_timeout = supervision_timeout; 8749 hci_run(); 8750 return ERROR_CODE_SUCCESS; 8751 } 8752 8753 #ifdef ENABLE_LE_PERIPHERAL 8754 8755 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8756 static void hci_assert_advertisement_set_0_ready(void){ 8757 // force advertising set creation for legacy LE Advertising 8758 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8759 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8760 } 8761 } 8762 #endif 8763 8764 /** 8765 * @brief Set Advertisement Data 8766 * @param advertising_data_length 8767 * @param advertising_data (max 31 octets) 8768 * @note data is not copied, pointer has to stay valid 8769 */ 8770 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8771 hci_stack->le_advertisements_data_len = advertising_data_length; 8772 hci_stack->le_advertisements_data = advertising_data; 8773 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8774 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8775 hci_assert_advertisement_set_0_ready(); 8776 #endif 8777 hci_run(); 8778 } 8779 8780 /** 8781 * @brief Set Scan Response Data 8782 * @param advertising_data_length 8783 * @param advertising_data (max 31 octets) 8784 * @note data is not copied, pointer has to stay valid 8785 */ 8786 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8787 hci_stack->le_scan_response_data_len = scan_response_data_length; 8788 hci_stack->le_scan_response_data = scan_response_data; 8789 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8790 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8791 hci_assert_advertisement_set_0_ready(); 8792 #endif 8793 hci_run(); 8794 } 8795 8796 /** 8797 * @brief Set Advertisement Parameters 8798 * @param adv_int_min 8799 * @param adv_int_max 8800 * @param adv_type 8801 * @param direct_address_type 8802 * @param direct_address 8803 * @param channel_map 8804 * @param filter_policy 8805 * 8806 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8807 */ 8808 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8809 uint8_t direct_address_typ, bd_addr_t direct_address, 8810 uint8_t channel_map, uint8_t filter_policy) { 8811 8812 hci_stack->le_advertisements_interval_min = adv_int_min; 8813 hci_stack->le_advertisements_interval_max = adv_int_max; 8814 hci_stack->le_advertisements_type = adv_type; 8815 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8816 hci_stack->le_advertisements_channel_map = channel_map; 8817 hci_stack->le_advertisements_filter_policy = filter_policy; 8818 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8819 6); 8820 8821 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8822 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8823 hci_run(); 8824 } 8825 8826 /** 8827 * @brief Enable/Disable Advertisements 8828 * @param enabled 8829 */ 8830 void gap_advertisements_enable(int enabled){ 8831 if (enabled == 0){ 8832 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8833 } else { 8834 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8835 } 8836 hci_update_advertisements_enabled_for_current_roles(); 8837 hci_run(); 8838 } 8839 8840 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8841 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8842 btstack_linked_list_iterator_t it; 8843 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8844 while (btstack_linked_list_iterator_has_next(&it)){ 8845 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8846 if ( item->advertising_handle == advertising_handle ) { 8847 return item; 8848 } 8849 } 8850 return NULL; 8851 } 8852 8853 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8854 hci_stack->le_resolvable_private_address_update_s = update_s; 8855 hci_run(); 8856 return ERROR_CODE_SUCCESS; 8857 } 8858 8859 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8860 // find free advertisement handle. we use LE_EXTENDED_ADVERTISING_LEGACY_HANDLE for non-extended advertising 8861 uint8_t advertisement_handle; 8862 for (advertisement_handle = LE_EXTENDED_ADVERTISING_LEGACY_HANDLE + 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8863 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8864 } 8865 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8866 // clear 8867 memset(storage, 0, sizeof(le_advertising_set_t)); 8868 // copy params 8869 storage->advertising_handle = advertisement_handle; 8870 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8871 // add to list 8872 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8873 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8874 *out_advertising_handle = advertisement_handle; 8875 // set tasks and start 8876 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8877 hci_run(); 8878 return ERROR_CODE_SUCCESS; 8879 } 8880 8881 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8882 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8883 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8884 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8885 // set tasks and start 8886 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8887 hci_run(); 8888 return ERROR_CODE_SUCCESS; 8889 } 8890 8891 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8892 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8893 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8894 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8895 return ERROR_CODE_SUCCESS; 8896 } 8897 8898 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8899 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8900 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8901 memcpy(advertising_set->random_address, random_address, 6); 8902 // set tasks and start 8903 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8904 hci_run(); 8905 return ERROR_CODE_SUCCESS; 8906 } 8907 8908 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8909 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8910 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8911 advertising_set->adv_data = advertising_data; 8912 advertising_set->adv_data_len = advertising_data_length; 8913 // set tasks and start 8914 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8915 hci_run(); 8916 return ERROR_CODE_SUCCESS; 8917 } 8918 8919 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){ 8920 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8921 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8922 advertising_set->scan_data = scan_response_data; 8923 advertising_set->scan_data_len = scan_response_data_length; 8924 // set tasks and start 8925 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8926 hci_run(); 8927 return ERROR_CODE_SUCCESS; 8928 } 8929 8930 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8931 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8932 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8933 advertising_set->enable_timeout = timeout; 8934 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8935 // set tasks and start 8936 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8937 hci_run(); 8938 return ERROR_CODE_SUCCESS; 8939 } 8940 8941 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8942 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8943 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8944 // set tasks and start 8945 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8946 hci_run(); 8947 return ERROR_CODE_SUCCESS; 8948 } 8949 8950 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8951 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8952 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8953 // set tasks and start 8954 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8955 hci_run(); 8956 return ERROR_CODE_SUCCESS; 8957 } 8958 8959 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8960 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8961 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8962 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8963 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8964 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8965 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8966 // set tasks and start 8967 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8968 hci_run(); 8969 return ERROR_CODE_SUCCESS; 8970 } 8971 8972 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8973 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8974 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8975 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8976 return ERROR_CODE_SUCCESS; 8977 } 8978 8979 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8980 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8981 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8982 advertising_set->periodic_data = periodic_data; 8983 advertising_set->periodic_data_len = periodic_data_length; 8984 // set tasks and start 8985 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8986 hci_run(); 8987 return ERROR_CODE_SUCCESS; 8988 } 8989 8990 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8991 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8992 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8993 // set tasks and start 8994 advertising_set->periodic_include_adi = include_adi; 8995 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8996 hci_run(); 8997 return ERROR_CODE_SUCCESS; 8998 } 8999 9000 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 9001 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 9002 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9003 // set tasks and start 9004 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 9005 hci_run(); 9006 return ERROR_CODE_SUCCESS; 9007 } 9008 9009 #ifdef ENABLE_LE_CENTRAL 9010 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 9011 hci_stack->le_past_mode = mode; 9012 hci_stack->le_past_skip = skip; 9013 hci_stack->le_past_sync_timeout = sync_timeout; 9014 hci_stack->le_past_cte_type = cte_type; 9015 hci_stack->le_past_set_default_params = true; 9016 hci_run(); 9017 return ERROR_CODE_SUCCESS; 9018 } 9019 9020 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 9021 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9022 if (hci_connection == NULL){ 9023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9024 } 9025 hci_connection->le_past_sync_handle = sync_handle; 9026 hci_connection->le_past_service_data = service_data; 9027 hci_run(); 9028 return ERROR_CODE_SUCCESS; 9029 } 9030 #endif 9031 9032 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 9033 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9034 if (hci_connection == NULL){ 9035 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9036 } 9037 hci_connection->le_past_advertising_handle = advertising_handle; 9038 hci_connection->le_past_service_data = service_data; 9039 hci_run(); 9040 return ERROR_CODE_SUCCESS; 9041 } 9042 9043 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 9044 9045 #endif 9046 9047 #endif 9048 9049 void hci_le_set_own_address_type(uint8_t own_address_type){ 9050 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 9051 if (own_address_type == hci_stack->le_own_addr_type) return; 9052 hci_stack->le_own_addr_type = own_address_type; 9053 9054 #ifdef ENABLE_LE_PERIPHERAL 9055 // update advertisement parameters, too 9056 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 9057 hci_run(); 9058 #endif 9059 #ifdef ENABLE_LE_CENTRAL 9060 // note: we don't update scan parameters or modify ongoing connection attempts 9061 #endif 9062 } 9063 9064 void hci_le_random_address_set(const bd_addr_t random_address){ 9065 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 9066 memcpy(hci_stack->le_random_address, random_address, 6); 9067 hci_stack->le_random_address_set = true; 9068 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 9069 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9070 if (hci_le_extended_advertising_supported()){ 9071 hci_assert_advertisement_set_0_ready(); 9072 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 9073 } 9074 #endif 9075 hci_run(); 9076 } 9077 9078 #endif 9079 9080 uint8_t gap_disconnect(hci_con_handle_t handle){ 9081 hci_connection_t * conn = hci_connection_for_handle(handle); 9082 if (!conn){ 9083 hci_emit_disconnection_complete(handle, 0); 9084 return 0; 9085 } 9086 uint8_t status = ERROR_CODE_SUCCESS; 9087 switch (conn->state){ 9088 case RECEIVED_DISCONNECTION_COMPLETE: 9089 // ignore if remote just disconnected 9090 break; 9091 case SEND_DISCONNECT: 9092 case SENT_DISCONNECT: 9093 // disconnect already requested or sent 9094 status = ERROR_CODE_COMMAND_DISALLOWED; 9095 break; 9096 default: 9097 // trigger hci_disconnect 9098 conn->state = SEND_DISCONNECT; 9099 hci_run(); 9100 break; 9101 } 9102 return status; 9103 } 9104 9105 int gap_read_rssi(hci_con_handle_t con_handle){ 9106 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9107 if (hci_connection == NULL) return 0; 9108 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 9109 hci_run(); 9110 return 1; 9111 } 9112 9113 /** 9114 * @brief Get connection type 9115 * @param con_handle 9116 * @result connection_type 9117 */ 9118 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 9119 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9120 if (!conn) return GAP_CONNECTION_INVALID; 9121 switch (conn->address_type){ 9122 case BD_ADDR_TYPE_LE_PUBLIC: 9123 case BD_ADDR_TYPE_LE_RANDOM: 9124 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9125 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9126 return GAP_CONNECTION_LE; 9127 case BD_ADDR_TYPE_SCO: 9128 return GAP_CONNECTION_SCO; 9129 case BD_ADDR_TYPE_ACL: 9130 return GAP_CONNECTION_ACL; 9131 default: 9132 return GAP_CONNECTION_INVALID; 9133 } 9134 } 9135 9136 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9137 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9138 if (!conn) return HCI_ROLE_INVALID; 9139 return (hci_role_t) conn->role; 9140 } 9141 9142 9143 #ifdef ENABLE_CLASSIC 9144 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9145 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9146 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9147 conn->request_role = role; 9148 hci_run(); 9149 return ERROR_CODE_SUCCESS; 9150 } 9151 #endif 9152 9153 #ifdef ENABLE_BLE 9154 9155 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){ 9156 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9157 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9158 9159 conn->le_phy_update_all_phys = all_phys; 9160 conn->le_phy_update_tx_phys = tx_phys; 9161 conn->le_phy_update_rx_phys = rx_phys; 9162 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9163 9164 hci_run(); 9165 9166 return 0; 9167 } 9168 9169 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9170 9171 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9172 // incorrect configuration: 9173 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9174 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9175 btstack_assert(false); 9176 #endif 9177 9178 // check if already in list 9179 btstack_linked_list_iterator_t it; 9180 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9181 while (btstack_linked_list_iterator_has_next(&it)) { 9182 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9183 if (entry->address_type != address_type) { 9184 continue; 9185 } 9186 if (memcmp(entry->address, address, 6) != 0) { 9187 continue; 9188 } 9189 9190 // if already on controller: 9191 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9192 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9193 // drop remove request 9194 entry->state = LE_WHITELIST_ON_CONTROLLER; 9195 return ERROR_CODE_SUCCESS; 9196 } else { 9197 // disallow as already on controller 9198 return ERROR_CODE_COMMAND_DISALLOWED; 9199 } 9200 } 9201 9202 // assume scheduled to add 9203 return ERROR_CODE_COMMAND_DISALLOWED; 9204 } 9205 9206 // alloc and add to list 9207 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9208 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9209 entry->address_type = address_type; 9210 (void)memcpy(entry->address, address, 6); 9211 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9212 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9213 return ERROR_CODE_SUCCESS; 9214 } 9215 9216 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9217 btstack_linked_list_iterator_t it; 9218 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9219 while (btstack_linked_list_iterator_has_next(&it)){ 9220 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9221 if (entry->address_type != address_type) { 9222 continue; 9223 } 9224 if (memcmp(entry->address, address, 6) != 0) { 9225 continue; 9226 } 9227 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9228 // remove from controller if already present 9229 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9230 } else { 9231 // directly remove entry from whitelist 9232 btstack_linked_list_iterator_remove(&it); 9233 btstack_memory_whitelist_entry_free(entry); 9234 } 9235 return ERROR_CODE_SUCCESS; 9236 } 9237 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9238 } 9239 9240 static void hci_whitelist_clear(void){ 9241 btstack_linked_list_iterator_t it; 9242 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9243 while (btstack_linked_list_iterator_has_next(&it)){ 9244 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9245 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9246 // remove from controller if already present 9247 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9248 continue; 9249 } 9250 // directly remove entry from whitelist 9251 btstack_linked_list_iterator_remove(&it); 9252 btstack_memory_whitelist_entry_free(entry); 9253 } 9254 } 9255 9256 /** 9257 * @brief Clear Whitelist 9258 * @return 0 if ok 9259 */ 9260 uint8_t gap_whitelist_clear(void){ 9261 hci_whitelist_clear(); 9262 hci_run(); 9263 return ERROR_CODE_SUCCESS; 9264 } 9265 9266 /** 9267 * @brief Add Device to Whitelist 9268 * @param address_typ 9269 * @param address 9270 * @return 0 if ok 9271 */ 9272 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9273 uint8_t status = hci_whitelist_add(address_type, address); 9274 if (status){ 9275 return status; 9276 } 9277 hci_run(); 9278 return ERROR_CODE_SUCCESS; 9279 } 9280 9281 /** 9282 * @brief Remove Device from Whitelist 9283 * @param address_typ 9284 * @param address 9285 * @return 0 if ok 9286 */ 9287 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9288 uint8_t status = hci_whitelist_remove(address_type, address); 9289 if (status){ 9290 return status; 9291 } 9292 hci_run(); 9293 return ERROR_CODE_SUCCESS; 9294 } 9295 9296 #ifdef ENABLE_LE_CENTRAL 9297 /** 9298 * @brief Connect with Whitelist 9299 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9300 * @return - if ok 9301 */ 9302 uint8_t gap_connect_with_whitelist(void){ 9303 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9304 return ERROR_CODE_COMMAND_DISALLOWED; 9305 } 9306 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9307 hci_run(); 9308 return ERROR_CODE_SUCCESS; 9309 } 9310 9311 /** 9312 * @brief Auto Connection Establishment - Start Connecting to device 9313 * @param address_typ 9314 * @param address 9315 * @return 0 if ok 9316 */ 9317 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9318 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9319 return ERROR_CODE_COMMAND_DISALLOWED; 9320 } 9321 9322 uint8_t status = hci_whitelist_add(address_type, address); 9323 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9324 return status; 9325 } 9326 9327 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9328 9329 hci_run(); 9330 return ERROR_CODE_SUCCESS; 9331 } 9332 9333 /** 9334 * @brief Auto Connection Establishment - Stop Connecting to device 9335 * @param address_typ 9336 * @param address 9337 * @return 0 if ok 9338 */ 9339 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9340 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9341 return ERROR_CODE_COMMAND_DISALLOWED; 9342 } 9343 9344 hci_whitelist_remove(address_type, address); 9345 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9346 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9347 } 9348 hci_run(); 9349 return 0; 9350 } 9351 9352 /** 9353 * @brief Auto Connection Establishment - Stop everything 9354 * @note Convenience function to stop all active auto connection attempts 9355 */ 9356 uint8_t gap_auto_connection_stop_all(void){ 9357 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9358 return ERROR_CODE_COMMAND_DISALLOWED; 9359 } 9360 hci_whitelist_clear(); 9361 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9362 hci_run(); 9363 return ERROR_CODE_SUCCESS; 9364 } 9365 9366 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9367 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9368 if (!conn) return 0; 9369 return conn->le_connection_interval; 9370 } 9371 #endif 9372 #endif 9373 9374 #ifdef ENABLE_CLASSIC 9375 /** 9376 * @brief Set Extended Inquiry Response data 9377 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9378 * @note has to be done before stack starts up 9379 */ 9380 void gap_set_extended_inquiry_response(const uint8_t * data){ 9381 hci_stack->eir_data = data; 9382 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9383 hci_run(); 9384 } 9385 9386 /** 9387 * @brief Start GAP Classic Inquiry 9388 * @param duration in 1.28s units 9389 * @return 0 if ok 9390 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9391 */ 9392 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9393 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9394 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9395 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9396 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9397 } 9398 hci_stack->inquiry_state = duration_in_1280ms_units; 9399 hci_stack->inquiry_max_period_length = 0; 9400 hci_stack->inquiry_min_period_length = 0; 9401 hci_run(); 9402 return 0; 9403 } 9404 9405 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9406 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9407 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9408 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9409 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9410 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9411 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9412 9413 hci_stack->inquiry_state = duration; 9414 hci_stack->inquiry_max_period_length = max_period_length; 9415 hci_stack->inquiry_min_period_length = min_period_length; 9416 hci_run(); 9417 return 0; 9418 } 9419 9420 /** 9421 * @brief Stop GAP Classic Inquiry 9422 * @return 0 if ok 9423 */ 9424 int gap_inquiry_stop(void){ 9425 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9426 // emit inquiry complete event, before it even started 9427 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9428 hci_emit_btstack_event(event, sizeof(event), 1); 9429 return 0; 9430 } 9431 switch (hci_stack->inquiry_state){ 9432 case GAP_INQUIRY_STATE_ACTIVE: 9433 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9434 hci_run(); 9435 return ERROR_CODE_SUCCESS; 9436 case GAP_INQUIRY_STATE_PERIODIC: 9437 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9438 hci_run(); 9439 return ERROR_CODE_SUCCESS; 9440 default: 9441 return ERROR_CODE_COMMAND_DISALLOWED; 9442 } 9443 } 9444 9445 void gap_inquiry_set_lap(uint32_t lap){ 9446 hci_stack->inquiry_lap = lap; 9447 } 9448 9449 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9450 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9451 hci_stack->inquiry_scan_window = inquiry_scan_window; 9452 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9453 hci_run(); 9454 } 9455 9456 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9457 { 9458 hci_stack->inquiry_tx_power_level = tx_power; 9459 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9460 hci_run(); 9461 } 9462 9463 9464 /** 9465 * @brief Remote Name Request 9466 * @param addr 9467 * @param page_scan_repetition_mode 9468 * @param clock_offset only used when bit 15 is set 9469 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9470 */ 9471 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9472 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9473 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9474 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9475 hci_stack->remote_name_clock_offset = clock_offset; 9476 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9477 hci_run(); 9478 return 0; 9479 } 9480 9481 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9482 hci_stack->gap_pairing_state = state; 9483 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9484 hci_run(); 9485 return 0; 9486 } 9487 9488 /** 9489 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9490 * @param addr 9491 * @param pin_data 9492 * @param pin_len 9493 * @return 0 if ok 9494 */ 9495 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9496 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9497 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9498 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9499 hci_stack->gap_pairing_pin_len = pin_len; 9500 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9501 } 9502 9503 /** 9504 * @brief Legacy Pairing Pin Code Response 9505 * @param addr 9506 * @param pin 9507 * @return 0 if ok 9508 */ 9509 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9510 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9511 } 9512 9513 /** 9514 * @brief Abort Legacy Pairing 9515 * @param addr 9516 * @param pin 9517 * @return 0 if ok 9518 */ 9519 int gap_pin_code_negative(bd_addr_t addr){ 9520 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9521 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9522 } 9523 9524 /** 9525 * @brief SSP Passkey Response 9526 * @param addr 9527 * @param passkey 9528 * @return 0 if ok 9529 */ 9530 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9531 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9532 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9533 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9534 } 9535 9536 /** 9537 * @brief Abort SSP Passkey Entry/Pairing 9538 * @param addr 9539 * @param pin 9540 * @return 0 if ok 9541 */ 9542 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9543 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9544 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9545 } 9546 9547 /** 9548 * @brief Accept SSP Numeric Comparison 9549 * @param addr 9550 * @param passkey 9551 * @return 0 if ok 9552 */ 9553 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9554 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9555 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9556 } 9557 9558 /** 9559 * @brief Abort SSP Numeric Comparison/Pairing 9560 * @param addr 9561 * @param pin 9562 * @return 0 if ok 9563 */ 9564 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9565 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9566 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9567 } 9568 9569 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9570 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9571 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9572 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9573 connectionSetAuthenticationFlags(conn, flag); 9574 hci_run(); 9575 return ERROR_CODE_SUCCESS; 9576 } 9577 #endif 9578 9579 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9580 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9581 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9582 } 9583 9584 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9585 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9586 } 9587 #endif 9588 9589 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9590 /** 9591 * @brief Report Remote OOB Data 9592 * @param bd_addr 9593 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9594 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9595 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9596 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9597 */ 9598 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){ 9599 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9600 if (connection == NULL) { 9601 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9602 } 9603 connection->classic_oob_c_192 = c_192; 9604 connection->classic_oob_r_192 = r_192; 9605 9606 // ignore P-256 if not supported by us 9607 if (hci_stack->secure_connections_active){ 9608 connection->classic_oob_c_256 = c_256; 9609 connection->classic_oob_r_256 = r_256; 9610 } 9611 9612 return ERROR_CODE_SUCCESS; 9613 } 9614 /** 9615 * @brief Generate new OOB data 9616 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9617 */ 9618 void gap_ssp_generate_oob_data(void){ 9619 hci_stack->classic_read_local_oob_data = true; 9620 hci_run(); 9621 } 9622 9623 #endif 9624 9625 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9626 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9627 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9628 if (connection == NULL) { 9629 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9630 } 9631 9632 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9633 connection->link_key_type = type; 9634 9635 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9636 } 9637 9638 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9639 /** 9640 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9641 * @param inquiry_mode see bluetooth_defines.h 9642 */ 9643 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9644 hci_stack->inquiry_mode = inquiry_mode; 9645 } 9646 9647 /** 9648 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9649 */ 9650 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9651 hci_stack->sco_voice_setting = voice_setting; 9652 } 9653 9654 /** 9655 * @brief Get SCO Voice Setting 9656 * @return current voice setting 9657 */ 9658 uint16_t hci_get_sco_voice_setting(void){ 9659 return hci_stack->sco_voice_setting; 9660 } 9661 9662 static int hci_have_usb_transport(void){ 9663 if (!hci_stack->hci_transport) return 0; 9664 const char * transport_name = hci_stack->hci_transport->name; 9665 if (!transport_name) return 0; 9666 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9667 } 9668 9669 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9670 uint16_t sco_packet_length = 0; 9671 9672 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9673 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as many bytes 9674 int multiplier; 9675 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9676 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9677 multiplier = 2; 9678 } else { 9679 multiplier = 1; 9680 } 9681 #endif 9682 9683 #ifdef ENABLE_SCO_OVER_HCI 9684 if (hci_have_usb_transport()){ 9685 // see Core Spec for H2 USB Transfer. 9686 // 3 byte SCO header + 24 bytes per connection 9687 // @note multiple sco connections not supported currently 9688 sco_packet_length = 3 + 24 * multiplier; 9689 } else { 9690 // 3 byte SCO header + SCO packet length over the air 9691 sco_packet_length = 3 + payload_size * multiplier; 9692 // assert that it still fits inside an SCO buffer 9693 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9694 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9695 } 9696 } 9697 #endif 9698 #ifdef HAVE_SCO_TRANSPORT 9699 // 3 byte SCO header + SCO packet length over the air 9700 sco_packet_length = 3 + payload_size * multiplier; 9701 // assert that it still fits inside an SCO buffer 9702 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9703 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9704 } 9705 #endif 9706 return sco_packet_length; 9707 } 9708 9709 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9710 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9711 if (connection != NULL){ 9712 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9713 } 9714 return 0; 9715 } 9716 9717 uint16_t hci_get_sco_packet_length(void){ 9718 btstack_linked_list_iterator_t it; 9719 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9720 while (btstack_linked_list_iterator_has_next(&it)){ 9721 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9722 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9723 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9724 } 9725 } 9726 return 0; 9727 } 9728 9729 /** 9730 * @brief Sets the master/slave policy 9731 * @param policy (0: attempt to become master, 1: let connecting device decide) 9732 */ 9733 void hci_set_master_slave_policy(uint8_t policy){ 9734 hci_stack->master_slave_policy = policy; 9735 } 9736 9737 #endif 9738 9739 HCI_STATE hci_get_state(void){ 9740 return hci_stack->state; 9741 } 9742 9743 #ifdef ENABLE_CLASSIC 9744 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9745 hci_stack->gap_classic_accept_callback = accept_callback; 9746 } 9747 #endif 9748 9749 /** 9750 * @brief Set callback for Bluetooth Hardware Error 9751 */ 9752 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9753 hci_stack->hardware_error_callback = fn; 9754 } 9755 9756 void hci_disconnect_all(void){ 9757 btstack_linked_list_iterator_t it; 9758 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9759 while (btstack_linked_list_iterator_has_next(&it)){ 9760 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9761 if (con->state == SENT_DISCONNECT) continue; 9762 con->state = SEND_DISCONNECT; 9763 } 9764 hci_run(); 9765 } 9766 9767 uint16_t hci_get_manufacturer(void){ 9768 return hci_stack->manufacturer; 9769 } 9770 9771 #ifdef ENABLE_BLE 9772 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9773 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9774 if (!hci_con) return NULL; 9775 return &hci_con->sm_connection; 9776 } 9777 9778 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9779 // without sm.c default values from create_connection_for_bd_addr_and_type() result in non-encrypted, not-authenticated 9780 #endif 9781 9782 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9783 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9784 if (hci_connection == NULL) return 0; 9785 if (hci_is_le_connection(hci_connection)){ 9786 #ifdef ENABLE_BLE 9787 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9788 if (sm_conn->sm_connection_encrypted != 0u) { 9789 return sm_conn->sm_actual_encryption_key_size; 9790 } 9791 #endif 9792 } else { 9793 #ifdef ENABLE_CLASSIC 9794 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9795 return hci_connection->encryption_key_size; 9796 } 9797 #endif 9798 } 9799 return 0; 9800 } 9801 9802 bool gap_authenticated(hci_con_handle_t con_handle){ 9803 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9804 if (hci_connection == NULL) return false; 9805 9806 switch (hci_connection->address_type){ 9807 #ifdef ENABLE_BLE 9808 case BD_ADDR_TYPE_LE_PUBLIC: 9809 case BD_ADDR_TYPE_LE_RANDOM: 9810 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9811 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9812 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9813 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9814 #endif 9815 #ifdef ENABLE_CLASSIC 9816 case BD_ADDR_TYPE_SCO: 9817 case BD_ADDR_TYPE_ACL: 9818 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9819 #endif 9820 default: 9821 return false; 9822 } 9823 } 9824 9825 bool gap_secure_connection(hci_con_handle_t con_handle){ 9826 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9827 if (hci_connection == NULL) return 0; 9828 9829 switch (hci_connection->address_type){ 9830 #ifdef ENABLE_BLE 9831 case BD_ADDR_TYPE_LE_PUBLIC: 9832 case BD_ADDR_TYPE_LE_RANDOM: 9833 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9834 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9835 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9836 return hci_connection->sm_connection.sm_connection_sc; 9837 #endif 9838 #ifdef ENABLE_CLASSIC 9839 case BD_ADDR_TYPE_SCO: 9840 case BD_ADDR_TYPE_ACL: 9841 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9842 #endif 9843 default: 9844 return false; 9845 } 9846 } 9847 9848 bool gap_bonded(hci_con_handle_t con_handle){ 9849 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9850 if (hci_connection == NULL) return 0; 9851 9852 #ifdef ENABLE_CLASSIC 9853 link_key_t link_key; 9854 link_key_type_t link_key_type; 9855 #endif 9856 switch (hci_connection->address_type){ 9857 #ifdef ENABLE_BLE 9858 case BD_ADDR_TYPE_LE_PUBLIC: 9859 case BD_ADDR_TYPE_LE_RANDOM: 9860 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9861 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9862 return hci_connection->sm_connection.sm_le_db_index >= 0; 9863 #endif 9864 #ifdef ENABLE_CLASSIC 9865 case BD_ADDR_TYPE_SCO: 9866 case BD_ADDR_TYPE_ACL: 9867 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9868 #endif 9869 default: 9870 return false; 9871 } 9872 } 9873 9874 #ifdef ENABLE_BLE 9875 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9876 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9877 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9878 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9879 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticated connection cannot be authorized 9880 return sm_conn->sm_connection_authorization_state; 9881 } 9882 #endif 9883 9884 #ifdef ENABLE_CLASSIC 9885 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){ 9886 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9887 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9888 conn->sniff_min_interval = sniff_min_interval; 9889 conn->sniff_max_interval = sniff_max_interval; 9890 conn->sniff_attempt = sniff_attempt; 9891 conn->sniff_timeout = sniff_timeout; 9892 hci_run(); 9893 return 0; 9894 } 9895 9896 /** 9897 * @brief Exit Sniff mode 9898 * @param con_handle 9899 @ @return 0 if ok 9900 */ 9901 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9902 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9903 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9904 conn->sniff_min_interval = 0xffff; 9905 hci_run(); 9906 return 0; 9907 } 9908 9909 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){ 9910 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9911 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9912 conn->sniff_subrating_max_latency = max_latency; 9913 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9914 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9915 hci_run(); 9916 return ERROR_CODE_SUCCESS; 9917 } 9918 9919 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){ 9920 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9921 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9922 conn->qos_service_type = service_type; 9923 conn->qos_token_rate = token_rate; 9924 conn->qos_peak_bandwidth = peak_bandwidth; 9925 conn->qos_latency = latency; 9926 conn->qos_delay_variation = delay_variation; 9927 hci_run(); 9928 return ERROR_CODE_SUCCESS; 9929 } 9930 9931 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9932 hci_stack->new_page_scan_interval = page_scan_interval; 9933 hci_stack->new_page_scan_window = page_scan_window; 9934 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9935 hci_run(); 9936 } 9937 9938 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9939 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9940 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9941 hci_run(); 9942 } 9943 9944 void gap_set_page_timeout(uint16_t page_timeout){ 9945 hci_stack->page_timeout = page_timeout; 9946 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9947 hci_run(); 9948 } 9949 9950 #endif 9951 9952 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9953 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9954 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9955 if (le_device_db_index >= le_device_db_max_count()) return; 9956 uint8_t offset = le_device_db_index >> 3; 9957 uint8_t mask = 1 << (le_device_db_index & 7); 9958 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9959 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9960 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9961 // note: go back to remove entries, otherwise, a remove + add will skip the add 9962 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9963 } 9964 } 9965 9966 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9967 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9968 if (le_device_db_index >= le_device_db_max_count()) return; 9969 uint8_t offset = le_device_db_index >> 3; 9970 uint8_t mask = 1 << (le_device_db_index & 7); 9971 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9972 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9973 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9974 } 9975 } 9976 9977 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9978 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9979 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9980 } 9981 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9982 // restart le resolving list update 9983 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9984 } 9985 return ERROR_CODE_SUCCESS; 9986 } 9987 9988 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9989 hci_stack->le_privacy_mode = privacy_mode; 9990 } 9991 #endif 9992 9993 #ifdef ENABLE_BLE 9994 #ifdef ENABLE_LE_CENTRAL 9995 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9996 9997 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9998 9999 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 10000 // incorrect configuration: 10001 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 10002 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 10003 btstack_assert(false); 10004 #endif 10005 10006 // check if already in list 10007 btstack_linked_list_iterator_t it; 10008 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10009 while (btstack_linked_list_iterator_has_next(&it)) { 10010 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 10011 if (entry->sid != advertising_sid) { 10012 continue; 10013 } 10014 if (entry->address_type != address_type) { 10015 continue; 10016 } 10017 if (memcmp(entry->address, address, 6) != 0) { 10018 continue; 10019 } 10020 // disallow if already scheduled to add 10021 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 10022 return ERROR_CODE_COMMAND_DISALLOWED; 10023 } 10024 // still on controller, but scheduled to remove -> re-add 10025 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 10026 return ERROR_CODE_SUCCESS; 10027 } 10028 // alloc and add to list 10029 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 10030 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 10031 entry->sid = advertising_sid; 10032 entry->address_type = address_type; 10033 (void)memcpy(entry->address, address, 6); 10034 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 10035 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 10036 return ERROR_CODE_SUCCESS; 10037 } 10038 10039 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10040 btstack_linked_list_iterator_t it; 10041 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10042 while (btstack_linked_list_iterator_has_next(&it)){ 10043 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10044 if (entry->sid != advertising_sid) { 10045 continue; 10046 } 10047 if (entry->address_type != address_type) { 10048 continue; 10049 } 10050 if (memcmp(entry->address, address, 6) != 0) { 10051 continue; 10052 } 10053 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10054 // remove from controller if already present 10055 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10056 } else { 10057 // directly remove entry from whitelist 10058 btstack_linked_list_iterator_remove(&it); 10059 btstack_memory_periodic_advertiser_list_entry_free(entry); 10060 } 10061 return ERROR_CODE_SUCCESS; 10062 } 10063 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10064 } 10065 10066 static void hci_periodic_advertiser_list_clear(void){ 10067 btstack_linked_list_iterator_t it; 10068 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10069 while (btstack_linked_list_iterator_has_next(&it)){ 10070 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10071 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10072 // remove from controller if already present 10073 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10074 continue; 10075 } 10076 // directly remove entry from whitelist 10077 btstack_linked_list_iterator_remove(&it); 10078 btstack_memory_periodic_advertiser_list_entry_free(entry); 10079 } 10080 } 10081 10082 uint8_t gap_periodic_advertiser_list_clear(void){ 10083 hci_periodic_advertiser_list_clear(); 10084 hci_run(); 10085 return ERROR_CODE_SUCCESS; 10086 } 10087 10088 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10089 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 10090 if (status){ 10091 return status; 10092 } 10093 hci_run(); 10094 return ERROR_CODE_SUCCESS; 10095 } 10096 10097 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10098 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 10099 if (status){ 10100 return status; 10101 } 10102 hci_run(); 10103 return ERROR_CODE_SUCCESS; 10104 } 10105 10106 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 10107 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 10108 // abort if already active 10109 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 10110 return ERROR_CODE_COMMAND_DISALLOWED; 10111 } 10112 // store request 10113 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 10114 hci_stack->le_periodic_sync_options = options; 10115 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 10116 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 10117 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 10118 hci_stack->le_periodic_sync_skip = skip; 10119 hci_stack->le_periodic_sync_timeout = sync_timeout; 10120 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 10121 10122 hci_run(); 10123 return ERROR_CODE_SUCCESS; 10124 } 10125 10126 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 10127 // abort if not requested 10128 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 10129 return ERROR_CODE_COMMAND_DISALLOWED; 10130 } 10131 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 10132 hci_run(); 10133 return ERROR_CODE_SUCCESS; 10134 } 10135 10136 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10137 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10138 return ERROR_CODE_COMMAND_DISALLOWED; 10139 } 10140 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10141 hci_run(); 10142 return ERROR_CODE_SUCCESS; 10143 } 10144 10145 #endif 10146 #endif 10147 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10148 static hci_iso_stream_t * 10149 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10150 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10151 if (iso_stream != NULL){ 10152 iso_stream->iso_type = iso_type; 10153 iso_stream->state = state; 10154 iso_stream->group_id = group_id; 10155 iso_stream->stream_id = stream_id; 10156 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10157 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10158 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10159 } 10160 return iso_stream; 10161 } 10162 10163 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10164 btstack_linked_list_iterator_t it; 10165 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10166 while (btstack_linked_list_iterator_has_next(&it)){ 10167 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10168 if (iso_stream->cis_handle == con_handle ) { 10169 return iso_stream; 10170 } 10171 } 10172 return NULL; 10173 } 10174 10175 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10176 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10177 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10178 btstack_memory_hci_iso_stream_free(iso_stream); 10179 } 10180 10181 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10182 btstack_linked_list_iterator_t it; 10183 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10184 while (btstack_linked_list_iterator_has_next(&it)){ 10185 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10186 if ((iso_stream->group_id == group_id) && 10187 (iso_stream->iso_type == iso_type)){ 10188 btstack_linked_list_iterator_remove(&it); 10189 btstack_memory_hci_iso_stream_free(iso_stream); 10190 } 10191 } 10192 } 10193 10194 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10195 btstack_linked_list_iterator_t it; 10196 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10197 while (btstack_linked_list_iterator_has_next(&it)){ 10198 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10199 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10200 (iso_stream->group_id == group_id)){ 10201 btstack_linked_list_iterator_remove(&it); 10202 btstack_memory_hci_iso_stream_free(iso_stream); 10203 } 10204 } 10205 } 10206 10207 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10208 UNUSED(big_handle); 10209 10210 btstack_linked_list_iterator_t it; 10211 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10212 while (btstack_linked_list_iterator_has_next(&it)){ 10213 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10214 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10215 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10216 } 10217 } 10218 } 10219 10220 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10221 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10222 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10223 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10224 return (sdu_len_offset + 2 + sdu_len) == size; 10225 } 10226 10227 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10228 if (iso_stream == NULL){ 10229 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10230 return; 10231 } 10232 10233 if (hci_stack->iso_packet_handler == NULL) { 10234 return; 10235 } 10236 10237 // parse header 10238 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10239 uint16_t data_total_length = little_endian_read_16(packet, 2); 10240 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10241 10242 // assert packet is complete 10243 if ((data_total_length + 4u) != size){ 10244 return; 10245 } 10246 10247 if ((pb_flag & 0x01) == 0){ 10248 if (pb_flag == 0x02){ 10249 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10250 if (hci_iso_sdu_complete(packet, size)) { 10251 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10252 } 10253 } else { 10254 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10255 if (size > sizeof(iso_stream->reassembly_buffer)){ 10256 return; 10257 } 10258 memcpy(iso_stream->reassembly_buffer, packet, size); 10259 // fix pb_flag 10260 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10261 iso_stream->reassembly_pos = size; 10262 } 10263 } else { 10264 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10265 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10266 if (ts_flag != 0){ 10267 return; 10268 } 10269 // append fragment 10270 if (iso_stream->reassembly_pos == 0){ 10271 return; 10272 } 10273 10274 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10275 // reset reassembly buffer 10276 iso_stream->reassembly_pos = 0; 10277 return; 10278 } 10279 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10280 iso_stream->reassembly_pos += data_total_length; 10281 10282 // deliver if last fragment and SDU complete 10283 if (pb_flag == 0x03){ 10284 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10285 // fix data_total_length 10286 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10287 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10288 } 10289 // reset reassembly buffer 10290 iso_stream->reassembly_pos = 0; 10291 } 10292 } 10293 } 10294 10295 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10296 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10297 uint16_t pos = 0; 10298 event[pos++] = HCI_EVENT_META_GAP; 10299 event[pos++] = 4 + (2 * big->num_bis); 10300 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10301 event[pos++] = status; 10302 event[pos++] = big->big_handle; 10303 event[pos++] = big->num_bis; 10304 uint8_t i; 10305 for (i=0;i<big->num_bis;i++){ 10306 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10307 pos += 2; 10308 } 10309 hci_emit_btstack_event(event, pos, 0); 10310 } 10311 10312 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10313 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10314 uint16_t pos = 0; 10315 event[pos++] = HCI_EVENT_META_GAP; 10316 event[pos++] = 4 + (2 * cig->num_cis); 10317 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10318 event[pos++] = status; 10319 event[pos++] = cig->cig_id; 10320 event[pos++] = cig->num_cis; 10321 uint8_t i; 10322 for (i=0;i<cig->num_cis;i++){ 10323 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10324 pos += 2; 10325 } 10326 hci_emit_btstack_event(event, pos, 0); 10327 } 10328 10329 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10330 uint16_t pos = 0; 10331 event[pos++] = HCI_EVENT_META_GAP; 10332 event[pos++] = 8; 10333 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10334 event[pos++] = status; 10335 event[pos++] = iso_stream->group_id; 10336 event[pos++] = iso_stream->stream_id; 10337 little_endian_store_16(event, pos, iso_stream->cis_handle); 10338 pos += 2; 10339 little_endian_store_16(event, pos, iso_stream->acl_handle); 10340 pos += 2; 10341 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10342 pos += 2; 10343 event[pos++] = iso_stream->number_of_subevents; 10344 event[pos++] = iso_stream->burst_number_c_to_p; 10345 event[pos++] = iso_stream->burst_number_p_to_c; 10346 event[pos++] = iso_stream->flush_timeout_c_to_p; 10347 event[pos++] = iso_stream->flush_timeout_p_to_c; 10348 return pos; 10349 } 10350 10351 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10352 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10353 // cache data before finalizing struct 10354 uint8_t event [17]; 10355 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10356 btstack_assert(pos <= sizeof(event)); 10357 if (status != ERROR_CODE_SUCCESS){ 10358 hci_iso_stream_finalize(iso_stream); 10359 } 10360 hci_emit_btstack_event(event, pos, 0); 10361 } 10362 10363 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10364 uint8_t event [4]; 10365 uint16_t pos = 0; 10366 event[pos++] = HCI_EVENT_META_GAP; 10367 event[pos++] = 2; 10368 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10369 event[pos++] = big->big_handle; 10370 hci_emit_btstack_event(event, pos, 0); 10371 } 10372 10373 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10374 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10375 uint16_t pos = 0; 10376 event[pos++] = HCI_EVENT_META_GAP; 10377 event[pos++] = 4; 10378 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10379 event[pos++] = status; 10380 event[pos++] = big_sync->big_handle; 10381 event[pos++] = big_sync->num_bis; 10382 uint8_t i; 10383 for (i=0;i<big_sync->num_bis;i++){ 10384 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10385 pos += 2; 10386 } 10387 hci_emit_btstack_event(event, pos, 0); 10388 } 10389 10390 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10391 uint8_t event [4]; 10392 uint16_t pos = 0; 10393 event[pos++] = HCI_EVENT_META_GAP; 10394 event[pos++] = 2; 10395 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10396 event[pos++] = big_handle; 10397 hci_emit_btstack_event(event, pos, 0); 10398 } 10399 10400 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10401 uint8_t event[6]; 10402 uint16_t pos = 0; 10403 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10404 event[pos++] = sizeof(event) - 2; 10405 event[pos++] = big->big_handle; 10406 event[pos++] = bis_index; 10407 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10408 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10409 } 10410 10411 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10412 uint8_t event[4]; 10413 uint16_t pos = 0; 10414 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10415 event[pos++] = sizeof(event) - 2; 10416 little_endian_store_16(event, pos, cis_con_handle); 10417 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10418 } 10419 10420 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10421 btstack_linked_list_iterator_t it; 10422 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10423 while (btstack_linked_list_iterator_has_next(&it)){ 10424 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10425 if ( big->big_handle == big_handle ) { 10426 return big; 10427 } 10428 } 10429 return NULL; 10430 } 10431 10432 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10433 btstack_linked_list_iterator_t it; 10434 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10435 while (btstack_linked_list_iterator_has_next(&it)){ 10436 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10437 if ( big_sync->big_handle == big_handle ) { 10438 return big_sync; 10439 } 10440 } 10441 return NULL; 10442 } 10443 10444 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10445 hci_stack->iso_packets_to_queue = num_packets; 10446 } 10447 10448 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10449 btstack_linked_list_iterator_t it; 10450 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10451 while (btstack_linked_list_iterator_has_next(&it)){ 10452 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10453 if ( cig->cig_id == cig_id ) { 10454 return cig; 10455 } 10456 } 10457 return NULL; 10458 } 10459 10460 static void hci_iso_notify_can_send_now(void){ 10461 10462 // BIG 10463 10464 btstack_linked_list_iterator_t it; 10465 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10466 while (btstack_linked_list_iterator_has_next(&it)){ 10467 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10468 // track number completed packet timestamps 10469 if (big->num_completed_timestamp_current_valid){ 10470 big->num_completed_timestamp_current_valid = false; 10471 if (big->num_completed_timestamp_previous_valid){ 10472 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10473 int32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10474 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10475 big->num_completed_timestamp_previous_ms); 10476 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10477 // to catch up, skip packet on all BIS 10478 uint8_t i; 10479 for (i=0;i<big->num_bis;i++){ 10480 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10481 if (iso_stream){ 10482 iso_stream->num_packets_to_skip++; 10483 } 10484 } 10485 } 10486 } 10487 big->num_completed_timestamp_previous_valid = true; 10488 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10489 } 10490 10491 if (big->can_send_now_requested){ 10492 // check if no outgoing iso packets pending and no can send now have to be emitted 10493 uint8_t i; 10494 bool can_send = true; 10495 uint8_t num_iso_queued_minimum = 0; 10496 for (i=0;i<big->num_bis;i++){ 10497 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10498 if (iso_stream == NULL) continue; 10499 // handle case where individual ISO packet was sent too late: 10500 // for each additionally queued packet, a new one needs to get skipped 10501 if (i==0){ 10502 num_iso_queued_minimum = iso_stream->num_packets_sent; 10503 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10504 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10505 iso_stream->num_packets_to_skip += num_packets_to_skip; 10506 iso_stream->num_packets_sent -= num_packets_to_skip; 10507 } 10508 // check if we can send now 10509 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10510 can_send = false; 10511 break; 10512 } 10513 } 10514 if (can_send){ 10515 // propagate can send now to individual streams 10516 big->can_send_now_requested = false; 10517 for (i=0;i<big->num_bis;i++){ 10518 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10519 iso_stream->emit_ready_to_send = true; 10520 } 10521 } 10522 } 10523 } 10524 10525 if (hci_stack->hci_packet_buffer_reserved) return; 10526 10527 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10528 while (btstack_linked_list_iterator_has_next(&it)){ 10529 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10530 // report bis ready 10531 uint8_t i; 10532 for (i=0;i<big->num_bis;i++){ 10533 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10534 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10535 iso_stream->emit_ready_to_send = false; 10536 hci_emit_bis_can_send_now(big, i); 10537 if (hci_stack->hci_packet_buffer_reserved) return; 10538 } 10539 } 10540 } 10541 10542 10543 // CIS 10544 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10545 while (btstack_linked_list_iterator_has_next(&it)) { 10546 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10547 if ((iso_stream->can_send_now_requested) && 10548 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10549 iso_stream->can_send_now_requested = false; 10550 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10551 if (hci_stack->hci_packet_buffer_reserved) return; 10552 } 10553 } 10554 } 10555 10556 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10557 // make big handle unique and usuable for big and big sync 10558 if (hci_big_for_handle(big_handle) != NULL){ 10559 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10560 } 10561 if (hci_big_sync_for_handle(big_handle) != NULL){ 10562 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10563 } 10564 if (num_bis == 0){ 10565 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10566 } 10567 if (num_bis > MAX_NR_BIS){ 10568 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10569 } 10570 10571 // reserve ISO Streams 10572 uint8_t i; 10573 uint8_t status = ERROR_CODE_SUCCESS; 10574 for (i=0;i<num_bis;i++){ 10575 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10576 if (iso_stream == NULL) { 10577 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10578 break; 10579 } 10580 } 10581 10582 // free structs on error 10583 if (status != ERROR_CODE_SUCCESS){ 10584 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10585 } 10586 10587 return status; 10588 } 10589 10590 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10591 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10592 if (status != ERROR_CODE_SUCCESS){ 10593 return status; 10594 } 10595 10596 le_audio_big_t * big = storage; 10597 big->big_handle = big_params->big_handle; 10598 big->params = big_params; 10599 big->state = LE_AUDIO_BIG_STATE_CREATE; 10600 big->num_bis = big_params->num_bis; 10601 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10602 10603 hci_run(); 10604 10605 return ERROR_CODE_SUCCESS; 10606 } 10607 10608 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10609 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10610 if (status != ERROR_CODE_SUCCESS){ 10611 return status; 10612 } 10613 10614 le_audio_big_sync_t * big_sync = storage; 10615 big_sync->big_handle = big_sync_params->big_handle; 10616 big_sync->params = big_sync_params; 10617 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10618 big_sync->num_bis = big_sync_params->num_bis; 10619 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10620 10621 hci_run(); 10622 10623 return ERROR_CODE_SUCCESS; 10624 } 10625 10626 uint8_t gap_big_terminate(uint8_t big_handle){ 10627 le_audio_big_t * big = hci_big_for_handle(big_handle); 10628 if (big == NULL){ 10629 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10630 } 10631 switch (big->state){ 10632 case LE_AUDIO_BIG_STATE_CREATE: 10633 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10634 hci_emit_big_terminated(big); 10635 break; 10636 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10637 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10638 break; 10639 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10640 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10641 case LE_AUDIO_BIG_STATE_ACTIVE: 10642 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10643 hci_run(); 10644 break; 10645 default: 10646 return ERROR_CODE_COMMAND_DISALLOWED; 10647 } 10648 return ERROR_CODE_SUCCESS; 10649 } 10650 10651 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10652 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10653 if (big_sync == NULL){ 10654 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10655 } 10656 switch (big_sync->state){ 10657 case LE_AUDIO_BIG_STATE_CREATE: 10658 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10659 hci_emit_big_sync_stopped(big_handle); 10660 break; 10661 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10662 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10663 break; 10664 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10665 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10666 case LE_AUDIO_BIG_STATE_ACTIVE: 10667 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10668 hci_run(); 10669 break; 10670 default: 10671 return ERROR_CODE_COMMAND_DISALLOWED; 10672 } 10673 return ERROR_CODE_SUCCESS; 10674 } 10675 10676 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10677 le_audio_big_t * big = hci_big_for_handle(big_handle); 10678 if (big == NULL){ 10679 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10680 } 10681 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10682 return ERROR_CODE_COMMAND_DISALLOWED; 10683 } 10684 big->can_send_now_requested = true; 10685 hci_iso_notify_can_send_now(); 10686 return ERROR_CODE_SUCCESS; 10687 } 10688 10689 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10690 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10691 if (iso_stream == NULL){ 10692 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10693 } 10694 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10695 return ERROR_CODE_COMMAND_DISALLOWED; 10696 } 10697 iso_stream->can_send_now_requested = true; 10698 hci_iso_notify_can_send_now(); 10699 return ERROR_CODE_SUCCESS; 10700 } 10701 10702 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10703 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10704 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10705 } 10706 if (cig_params->num_cis == 0){ 10707 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10708 } 10709 if (cig_params->num_cis > MAX_NR_CIS){ 10710 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10711 } 10712 10713 // reserve ISO Streams 10714 uint8_t i; 10715 uint8_t status = ERROR_CODE_SUCCESS; 10716 for (i=0;i<cig_params->num_cis;i++){ 10717 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10718 if (iso_stream == NULL) { 10719 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10720 break; 10721 } 10722 } 10723 10724 // free structs on error 10725 if (status != ERROR_CODE_SUCCESS){ 10726 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10727 return status; 10728 } 10729 10730 le_audio_cig_t * cig = storage; 10731 cig->cig_id = cig_params->cig_id; 10732 cig->num_cis = cig_params->num_cis; 10733 cig->params = cig_params; 10734 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10735 for (i=0;i<cig->num_cis;i++){ 10736 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10737 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10738 cig->cis_setup_active[i] = false; 10739 cig->cis_established[i] = false; 10740 } 10741 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10742 10743 hci_run(); 10744 10745 return ERROR_CODE_SUCCESS; 10746 } 10747 10748 uint8_t gap_cig_remove(uint8_t cig_id){ 10749 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10750 if (cig == NULL){ 10751 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10752 } 10753 10754 // close active CIS 10755 uint8_t i; 10756 for (i=0;i<cig->num_cis;i++){ 10757 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10758 if (stream != NULL){ 10759 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10760 } 10761 } 10762 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10763 10764 hci_run(); 10765 10766 return ERROR_CODE_SUCCESS; 10767 } 10768 10769 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10770 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10771 if (cig == NULL){ 10772 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10773 } 10774 10775 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10776 return ERROR_CODE_COMMAND_DISALLOWED; 10777 } 10778 10779 // store ACL Connection Handles 10780 uint8_t i; 10781 for (i=0;i<cig->num_cis;i++){ 10782 // check that all con handles exist and store 10783 hci_con_handle_t cis_handle = cis_con_handles[i]; 10784 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10785 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10786 } 10787 uint8_t j; 10788 bool found = false; 10789 for (j=0;j<cig->num_cis;j++){ 10790 if (cig->cis_con_handles[j] == cis_handle){ 10791 cig->acl_con_handles[j] = acl_con_handles[j]; 10792 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10793 btstack_assert(iso_stream != NULL); 10794 iso_stream->acl_handle = acl_con_handles[j]; 10795 found = true; 10796 break; 10797 } 10798 } 10799 if (!found){ 10800 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10801 } 10802 } 10803 10804 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10805 hci_run(); 10806 10807 return ERROR_CODE_SUCCESS; 10808 } 10809 10810 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10811 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10812 if (iso_stream == NULL){ 10813 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10814 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10815 } 10816 10817 // set next state and continue 10818 iso_stream->state = state; 10819 hci_run(); 10820 return ERROR_CODE_SUCCESS; 10821 } 10822 10823 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10824 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10825 } 10826 10827 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10828 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10829 } 10830 10831 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10832 10833 // GAP Privacy - notify clients before random address update 10834 10835 static bool gap_privacy_client_all_ready(void){ 10836 // check if all ready 10837 btstack_linked_list_iterator_t it; 10838 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10839 while (btstack_linked_list_iterator_has_next(&it)) { 10840 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10841 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10842 return false; 10843 } 10844 } 10845 return true; 10846 } 10847 10848 static void gap_privacy_clients_handle_ready(void){ 10849 // clear 'ready' 10850 btstack_linked_list_iterator_t it; 10851 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10852 while (btstack_linked_list_iterator_has_next(&it)) { 10853 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10854 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10855 } 10856 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10857 hci_run(); 10858 } 10859 10860 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10861 btstack_linked_list_iterator_t it; 10862 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10863 while (btstack_linked_list_iterator_has_next(&it)) { 10864 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10865 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10866 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10867 (*client->callback)(client, new_random_address); 10868 } 10869 } 10870 if (gap_privacy_client_all_ready()){ 10871 gap_privacy_clients_handle_ready(); 10872 } 10873 } 10874 10875 void gap_privacy_client_register(gap_privacy_client_t * client){ 10876 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10877 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10878 } 10879 10880 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10881 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10882 if (gap_privacy_client_all_ready()){ 10883 gap_privacy_clients_handle_ready(); 10884 } 10885 } 10886 10887 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10888 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10889 } 10890 10891 #endif /* ENABLE_BLE */ 10892 10893 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10894 void hci_setup_test_connections_fuzz(void){ 10895 hci_connection_t * conn; 10896 10897 // default address: 66:55:44:33:00:01 10898 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10899 10900 // setup Controller info 10901 hci_stack->num_cmd_packets = 255; 10902 hci_stack->acl_packets_total_num = 255; 10903 10904 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10905 addr[5] = 0x01; 10906 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10907 conn->con_handle = addr[5]; 10908 conn->state = RECEIVED_CONNECTION_REQUEST; 10909 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10910 10911 // setup incoming Classic SCO connection with con handle 0x0002 10912 addr[5] = 0x02; 10913 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10914 conn->con_handle = addr[5]; 10915 conn->state = RECEIVED_CONNECTION_REQUEST; 10916 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10917 10918 // setup ready Classic ACL connection with con handle 0x0003 10919 addr[5] = 0x03; 10920 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10921 conn->con_handle = addr[5]; 10922 conn->state = OPEN; 10923 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10924 10925 // setup ready Classic SCO connection with con handle 0x0004 10926 addr[5] = 0x04; 10927 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10928 conn->con_handle = addr[5]; 10929 conn->state = OPEN; 10930 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10931 10932 // setup ready LE ACL connection with con handle 0x005 and public address 10933 addr[5] = 0x05; 10934 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10935 conn->con_handle = addr[5]; 10936 conn->state = OPEN; 10937 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10938 conn->sm_connection.sm_connection_encrypted = 1; 10939 } 10940 10941 void hci_free_connections_fuzz(void){ 10942 btstack_linked_list_iterator_t it; 10943 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10944 while (btstack_linked_list_iterator_has_next(&it)){ 10945 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10946 btstack_linked_list_iterator_remove(&it); 10947 btstack_memory_hci_connection_free(con); 10948 } 10949 } 10950 void hci_simulate_working_fuzz(void){ 10951 hci_stack->le_scanning_param_update = false; 10952 hci_init_done(); 10953 hci_stack->num_cmd_packets = 255; 10954 } 10955 #endif 10956