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, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES , 27, 5) \ 171 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 172 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 173 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 175 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 176 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 178 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 179 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 180 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 181 182 // enumerate supported commands 183 #define X(name, offset, bit) name, 184 enum { 185 SUPPORTED_HCI_COMMANDS 186 SUPPORTED_HCI_COMMANDS_COUNT 187 }; 188 #undef X 189 190 // prototypes 191 #ifdef ENABLE_CLASSIC 192 static void hci_update_scan_enable(void); 193 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 194 static int hci_local_ssp_activated(void); 195 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 196 static bool hci_ssp_supported(hci_connection_t * connection); 197 static void hci_notify_if_sco_can_send_now(void); 198 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 199 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 200 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 201 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 202 static void hci_connection_timestamp(hci_connection_t *connection); 203 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 204 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 205 #endif 206 207 static int hci_power_control_on(void); 208 static void hci_power_control_off(void); 209 static void hci_state_reset(void); 210 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 211 static void hci_emit_transport_packet_sent(void); 212 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 213 static void hci_emit_nr_connections_changed(void); 214 static void hci_emit_hci_open_failed(void); 215 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 216 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 217 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump); 218 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 219 static void hci_run(void); 220 static bool hci_is_le_connection(hci_connection_t * connection); 221 static uint8_t hci_send_prepared_cmd_packet(void); 222 223 #ifdef ENABLE_CLASSIC 224 static int hci_have_usb_transport(void); 225 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 226 #endif 227 228 #ifdef ENABLE_BLE 229 static bool hci_run_general_gap_le(void); 230 static void gap_privacy_clients_handle_ready(void); 231 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 232 #ifdef ENABLE_LE_CENTRAL 233 // called from test/ble_client/advertising_data_parser.c 234 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 235 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 236 static hci_connection_t * gap_get_outgoing_le_connection(void); 237 static void hci_le_scan_stop(void); 238 #endif 239 #ifdef ENABLE_LE_PERIPHERAL 240 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 241 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 242 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len); 243 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size); 244 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 245 #endif /* ENABLE_LE_PERIPHERAL */ 246 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 247 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 248 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 249 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 250 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 251 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 252 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 253 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 254 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 255 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 256 static void hci_iso_notify_can_send_now(void); 257 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 258 static void hci_emit_big_terminated(const le_audio_big_t * big); 259 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 260 static void hci_emit_big_sync_stopped(uint8_t big_handle); 261 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 262 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 263 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 264 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 265 #endif /* ENABLE_BLE */ 266 267 // the STACK is here 268 #ifndef HAVE_MALLOC 269 static hci_stack_t hci_stack_static; 270 #endif 271 static hci_stack_t * hci_stack = NULL; 272 273 #ifdef ENABLE_CLASSIC 274 // default name 275 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 276 277 // test helper 278 static uint8_t disable_l2cap_timeouts = 0; 279 #endif 280 281 // reset connection state on create and on reconnect 282 // don't overwrite addr, con handle, role 283 static void hci_connection_init(hci_connection_t * conn){ 284 conn->authentication_flags = AUTH_FLAG_NONE; 285 conn->bonding_flags = 0; 286 conn->requested_security_level = LEVEL_0; 287 conn->link_key_type = INVALID_LINK_KEY; 288 #ifdef ENABLE_CLASSIC 289 conn->request_role = HCI_ROLE_INVALID; 290 conn->sniff_subrating_max_latency = 0xffff; 291 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 292 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 293 btstack_run_loop_set_timer_context(&conn->timeout, conn); 294 hci_connection_timestamp(conn); 295 #endif 296 conn->acl_recombination_length = 0; 297 conn->acl_recombination_pos = 0; 298 conn->num_packets_sent = 0; 299 300 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 301 #ifdef ENABLE_BLE 302 conn->le_phy_update_all_phys = 0xff; 303 #endif 304 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 305 conn->le_max_tx_octets = 27; 306 #endif 307 #ifdef ENABLE_CLASSIC_PAIRING_OOB 308 conn->classic_oob_c_192 = NULL; 309 conn->classic_oob_r_192 = NULL; 310 conn->classic_oob_c_256 = NULL; 311 conn->classic_oob_r_256 = NULL; 312 #endif 313 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 314 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 315 conn->le_past_advertising_handle = 0xff; 316 #endif 317 } 318 319 /** 320 * create connection for given address 321 * 322 * @return connection OR NULL, if no memory left 323 */ 324 static hci_connection_t * 325 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 326 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 327 328 hci_connection_t * conn = btstack_memory_hci_connection_get(); 329 if (!conn) return NULL; 330 hci_connection_init(conn); 331 332 bd_addr_copy(conn->address, addr); 333 conn->address_type = addr_type; 334 conn->con_handle = HCI_CON_HANDLE_INVALID; 335 conn->role = role; 336 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 337 338 return conn; 339 } 340 341 342 /** 343 * get le connection parameter range 344 * 345 * @return le connection parameter range struct 346 */ 347 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 348 *range = hci_stack->le_connection_parameter_range; 349 } 350 351 /** 352 * set le connection parameter range 353 * 354 */ 355 356 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 357 hci_stack->le_connection_parameter_range = *range; 358 } 359 360 /** 361 * @brief Test if connection parameters are inside in existing rage 362 * @param conn_interval_min (unit: 1.25ms) 363 * @param conn_interval_max (unit: 1.25ms) 364 * @param conn_latency 365 * @param supervision_timeout (unit: 10ms) 366 * @return 1 if included 367 */ 368 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 369 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 370 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 371 372 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 373 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 374 375 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 376 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 377 378 return 1; 379 } 380 381 /** 382 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 383 * @note: default: 1 384 * @param max_peripheral_connections 385 */ 386 #ifdef ENABLE_LE_PERIPHERAL 387 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 388 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 389 } 390 #endif 391 392 /** 393 * get hci connections iterator 394 * 395 * @return hci connections iterator 396 */ 397 398 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 399 btstack_linked_list_iterator_init(it, &hci_stack->connections); 400 } 401 402 /** 403 * get connection for a given handle 404 * 405 * @return connection OR NULL, if not found 406 */ 407 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 408 btstack_linked_list_iterator_t it; 409 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 410 while (btstack_linked_list_iterator_has_next(&it)){ 411 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 412 if ( item->con_handle == con_handle ) { 413 return item; 414 } 415 } 416 return NULL; 417 } 418 419 /** 420 * get connection for given address 421 * 422 * @return connection OR NULL, if not found 423 */ 424 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 425 btstack_linked_list_iterator_t it; 426 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 427 while (btstack_linked_list_iterator_has_next(&it)){ 428 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 429 if (connection->address_type != addr_type) continue; 430 if (memcmp(addr, connection->address, 6) != 0) continue; 431 return connection; 432 } 433 return NULL; 434 } 435 436 #ifdef ENABLE_CLASSIC 437 438 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 439 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 440 } 441 442 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 443 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 444 } 445 446 #ifdef ENABLE_SCO_OVER_HCI 447 static int hci_number_sco_connections(void){ 448 int connections = 0; 449 btstack_linked_list_iterator_t it; 450 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 451 while (btstack_linked_list_iterator_has_next(&it)){ 452 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 453 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 454 connections++; 455 } 456 return connections; 457 } 458 #endif 459 460 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 461 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 462 #ifdef HAVE_EMBEDDED_TICK 463 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 464 // connections might be timed out 465 hci_emit_l2cap_check_timeout(connection); 466 } 467 #else 468 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 469 // connections might be timed out 470 hci_emit_l2cap_check_timeout(connection); 471 } 472 #endif 473 } 474 475 static void hci_connection_timestamp(hci_connection_t *connection){ 476 #ifdef HAVE_EMBEDDED_TICK 477 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 478 #else 479 connection->timestamp = btstack_run_loop_get_time_ms(); 480 #endif 481 } 482 483 /** 484 * add authentication flags and reset timer 485 * @note: assumes classic connection 486 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 487 */ 488 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 489 bd_addr_t addr; 490 reverse_bd_addr(bd_addr, addr); 491 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 492 if (conn) { 493 connectionSetAuthenticationFlags(conn, flags); 494 hci_connection_timestamp(conn); 495 } 496 } 497 498 static bool hci_pairing_active(hci_connection_t * hci_connection){ 499 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 500 } 501 502 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 503 if (hci_pairing_active(hci_connection)) return; 504 if (ssp){ 505 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 506 } else { 507 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 508 } 509 // if we are initiator, we have sent an HCI Authenticate Request 510 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 511 512 // if we are responder, use minimal service security level as required level 513 if (!initiator){ 514 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 515 } 516 517 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 518 519 uint8_t event[12]; 520 event[0] = GAP_EVENT_PAIRING_STARTED; 521 event[1] = 10; 522 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 523 reverse_bd_addr(hci_connection->address, &event[4]); 524 event[10] = (uint8_t) ssp; 525 event[11] = (uint8_t) initiator; 526 hci_emit_btstack_event(event, sizeof(event), 1); 527 } 528 529 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 530 hci_connection->requested_security_level = LEVEL_0; 531 if (!hci_pairing_active(hci_connection)) return; 532 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 533 #ifdef ENABLE_CLASSIC_PAIRING_OOB 534 hci_connection->classic_oob_c_192 = NULL; 535 hci_connection->classic_oob_r_192 = NULL; 536 hci_connection->classic_oob_c_256 = NULL; 537 hci_connection->classic_oob_r_256 = NULL; 538 #endif 539 log_info("pairing complete, status %02x", status); 540 541 uint8_t event[11]; 542 event[0] = GAP_EVENT_PAIRING_COMPLETE; 543 event[1] = 9; 544 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 545 reverse_bd_addr(hci_connection->address, &event[4]); 546 event[10] = status; 547 hci_emit_btstack_event(event, sizeof(event), 1); 548 549 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 550 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 551 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 552 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 553 hci_connection->bonding_status = status; 554 } 555 } 556 557 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 558 hci_connection_t * conn = hci_connection_for_handle(handle); 559 if (!conn) return false; 560 return hci_pairing_active(conn); 561 } 562 563 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 566 hci_stack->link_key_db->delete_link_key(addr); 567 } 568 569 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 570 if (!hci_stack->link_key_db) return; 571 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 572 hci_stack->link_key_db->put_link_key(addr, link_key, type); 573 } 574 575 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 576 if (!hci_stack->link_key_db) return false; 577 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 578 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 579 return result; 580 } 581 582 void gap_delete_all_link_keys(void){ 583 bd_addr_t addr; 584 link_key_t link_key; 585 link_key_type_t type; 586 btstack_link_key_iterator_t it; 587 int ok = gap_link_key_iterator_init(&it); 588 if (!ok) { 589 log_error("could not initialize iterator"); 590 return; 591 } 592 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 593 gap_drop_link_key_for_bd_addr(addr); 594 } 595 gap_link_key_iterator_done(&it); 596 } 597 598 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 599 if (!hci_stack->link_key_db) return 0; 600 if (!hci_stack->link_key_db->iterator_init) return 0; 601 return hci_stack->link_key_db->iterator_init(it); 602 } 603 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 604 if (!hci_stack->link_key_db) return 0; 605 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 606 } 607 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 608 if (!hci_stack->link_key_db) return; 609 hci_stack->link_key_db->iterator_done(it); 610 } 611 #endif 612 613 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 614 switch (address_type){ 615 case BD_ADDR_TYPE_LE_PUBLIC: 616 case BD_ADDR_TYPE_LE_RANDOM: 617 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 618 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 619 return true; 620 default: 621 return false; 622 } 623 } 624 625 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 626 switch (address_type){ 627 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 628 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 629 return true; 630 default: 631 return false; 632 } 633 } 634 635 static bool hci_is_le_connection(hci_connection_t * connection){ 636 return hci_is_le_connection_type(connection->address_type); 637 } 638 639 /** 640 * count connections 641 */ 642 static int nr_hci_connections(void){ 643 int count = 0; 644 btstack_linked_item_t *it; 645 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 646 count++; 647 } 648 return count; 649 } 650 651 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 652 653 unsigned int num_packets_sent_classic = 0; 654 unsigned int num_packets_sent_le = 0; 655 656 btstack_linked_item_t *it; 657 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 658 hci_connection_t * connection = (hci_connection_t *) it; 659 if (hci_is_le_connection(connection)){ 660 num_packets_sent_le += connection->num_packets_sent; 661 } 662 if (connection->address_type == BD_ADDR_TYPE_ACL){ 663 num_packets_sent_classic += connection->num_packets_sent; 664 } 665 } 666 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 667 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 668 int free_slots_le = 0; 669 670 if (free_slots_classic < 0){ 671 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 672 return 0; 673 } 674 675 if (hci_stack->le_acl_packets_total_num){ 676 // if we have LE slots, they are used 677 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 678 if (free_slots_le < 0){ 679 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 680 return 0; 681 } 682 } else { 683 // otherwise, classic slots are used for LE, too 684 free_slots_classic -= num_packets_sent_le; 685 if (free_slots_classic < 0){ 686 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 687 return 0; 688 } 689 } 690 691 switch (address_type){ 692 case BD_ADDR_TYPE_UNKNOWN: 693 log_error("hci_number_free_acl_slots: unknown address type"); 694 return 0; 695 696 case BD_ADDR_TYPE_ACL: 697 return (uint16_t) free_slots_classic; 698 699 default: 700 if (hci_stack->le_acl_packets_total_num > 0){ 701 return (uint16_t) free_slots_le; 702 } 703 return (uint16_t) free_slots_classic; 704 } 705 } 706 707 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 708 // get connection type 709 hci_connection_t * connection = hci_connection_for_handle(con_handle); 710 if (!connection){ 711 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 712 return 0; 713 } 714 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 715 } 716 717 #ifdef ENABLE_CLASSIC 718 static int hci_number_free_sco_slots(void){ 719 unsigned int num_sco_packets_sent = 0; 720 btstack_linked_item_t *it; 721 if (hci_stack->synchronous_flow_control_enabled){ 722 // explicit flow control 723 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 724 hci_connection_t * connection = (hci_connection_t *) it; 725 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 726 num_sco_packets_sent += connection->num_packets_sent; 727 } 728 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 729 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 730 return 0; 731 } 732 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 733 } else { 734 // implicit flow control 735 int num_ready = 0; 736 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 737 hci_connection_t * connection = (hci_connection_t *) it; 738 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 739 if (connection->sco_tx_ready == 0) continue; 740 num_ready++; 741 } 742 return num_ready; 743 } 744 } 745 #endif 746 747 // only used to send HCI Host Number Completed Packets 748 static int hci_can_send_comand_packet_transport(void){ 749 if (hci_stack->hci_packet_buffer_reserved) return 0; 750 751 // check for async hci transport implementations 752 if (hci_stack->hci_transport->can_send_packet_now){ 753 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 754 return 0; 755 } 756 } 757 return 1; 758 } 759 760 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 761 bool hci_can_send_command_packet_now(void){ 762 if (hci_can_send_comand_packet_transport() == 0) return false; 763 return hci_stack->num_cmd_packets > 0u; 764 } 765 766 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 767 // check for async hci transport implementations 768 if (!hci_stack->hci_transport->can_send_packet_now) return true; 769 return hci_stack->hci_transport->can_send_packet_now(packet_type); 770 } 771 772 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 773 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 774 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 775 } 776 777 bool hci_can_send_acl_le_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 780 } 781 782 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 783 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 784 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 785 } 786 787 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 788 if (hci_stack->hci_packet_buffer_reserved) return false; 789 return hci_can_send_prepared_acl_packet_now(con_handle); 790 } 791 792 #ifdef ENABLE_CLASSIC 793 bool hci_can_send_acl_classic_packet_now(void){ 794 if (hci_stack->hci_packet_buffer_reserved) return false; 795 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 796 } 797 798 bool hci_can_send_prepared_sco_packet_now(void){ 799 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 800 if (hci_have_usb_transport()){ 801 return hci_stack->sco_can_send_now; 802 } else { 803 return hci_number_free_sco_slots() > 0; 804 } 805 } 806 807 bool hci_can_send_sco_packet_now(void){ 808 if (hci_stack->hci_packet_buffer_reserved) return false; 809 return hci_can_send_prepared_sco_packet_now(); 810 } 811 812 void hci_request_sco_can_send_now_event(void){ 813 hci_stack->sco_waiting_for_can_send_now = 1; 814 hci_notify_if_sco_can_send_now(); 815 } 816 #endif 817 818 // used for internal checks in l2cap.c 819 bool hci_is_packet_buffer_reserved(void){ 820 return hci_stack->hci_packet_buffer_reserved; 821 } 822 823 void hci_reserve_packet_buffer(void){ 824 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 825 hci_stack->hci_packet_buffer_reserved = true; 826 } 827 828 void hci_release_packet_buffer(void){ 829 btstack_assert(hci_stack->hci_packet_buffer_reserved); 830 hci_stack->hci_packet_buffer_reserved = false; 831 hci_emit_transport_packet_sent(); 832 } 833 834 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 835 static int hci_transport_synchronous(void){ 836 return hci_stack->hci_transport->can_send_packet_now == NULL; 837 } 838 839 // used for debugging 840 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 841 static void hci_controller_dump_packets(void){ 842 // format: "{handle:04x}:{count:02d} " 843 char summaries[3][7 * 8 + 1]; 844 uint16_t totals[3]; 845 uint8_t index; 846 for (index = 0 ; index < 3 ; index++){ 847 summaries[index][0] = 0; 848 totals[index] = 0; 849 } 850 btstack_linked_item_t *it; 851 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 852 hci_connection_t * connection = (hci_connection_t *) it; 853 switch (connection->address_type){ 854 case BD_ADDR_TYPE_ACL: 855 index = 0; 856 break; 857 case BD_ADDR_TYPE_SCO: 858 index = 2; 859 break; 860 default: 861 index = 1; 862 break; 863 } 864 totals[index] += connection->num_packets_sent; 865 char item_text[10]; 866 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 867 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 868 } 869 for (index = 0 ; index < 3 ; index++){ 870 if (summaries[index][0] == 0){ 871 summaries[index][0] = '-'; 872 summaries[index][1] = 0; 873 } 874 } 875 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 876 } 877 #endif 878 879 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 880 881 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 882 883 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 884 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 885 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 886 max_acl_data_packet_length = hci_stack->le_data_packets_length; 887 } 888 889 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 890 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 891 max_acl_data_packet_length = connection->le_max_tx_octets; 892 } 893 #endif 894 895 log_debug("hci_send_acl_packet_fragments entered"); 896 897 uint8_t status = ERROR_CODE_SUCCESS; 898 // multiple packets could be send on a synchronous HCI transport 899 while (true){ 900 901 log_debug("hci_send_acl_packet_fragments loop entered"); 902 903 // get current data 904 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 905 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 906 bool more_fragments = false; 907 908 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 909 if (current_acl_data_packet_length > max_acl_data_packet_length){ 910 more_fragments = true; 911 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 912 } 913 914 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 915 if (acl_header_pos > 0u){ 916 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 917 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 918 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 919 } 920 921 // update header len 922 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 923 924 // count packet 925 connection->num_packets_sent++; 926 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 927 928 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 929 if (more_fragments){ 930 // update start of next fragment to send 931 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 932 } else { 933 // done 934 hci_stack->acl_fragmentation_pos = 0; 935 hci_stack->acl_fragmentation_total_size = 0; 936 } 937 938 // send packet 939 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 940 const int size = current_acl_data_packet_length + 4; 941 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 942 hci_stack->acl_fragmentation_tx_active = 1; 943 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 944 if (err != 0){ 945 // no error from HCI Transport expected 946 status = ERROR_CODE_HARDWARE_FAILURE; 947 break; 948 } 949 950 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 951 hci_controller_dump_packets(); 952 #endif 953 954 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 955 956 // done yet? 957 if (!more_fragments) break; 958 959 // can send more? 960 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 961 } 962 963 log_debug("hci_send_acl_packet_fragments loop over"); 964 965 // release buffer now for synchronous transport 966 if (hci_transport_synchronous()){ 967 hci_stack->acl_fragmentation_tx_active = 0; 968 hci_release_packet_buffer(); 969 } 970 971 return status; 972 } 973 974 // pre: caller has reserved the packet buffer 975 uint8_t hci_send_acl_packet_buffer(int size){ 976 btstack_assert(hci_stack->hci_packet_buffer_reserved); 977 978 uint8_t * packet = hci_stack->hci_packet_buffer; 979 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 980 981 hci_connection_t *connection = hci_connection_for_handle( con_handle); 982 if (!connection) { 983 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 984 hci_release_packet_buffer(); 985 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 986 } 987 988 // check for free places on Bluetooth module 989 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 990 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 991 hci_release_packet_buffer(); 992 return BTSTACK_ACL_BUFFERS_FULL; 993 } 994 995 #ifdef ENABLE_CLASSIC 996 hci_connection_timestamp(connection); 997 #endif 998 999 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 1000 1001 // setup data 1002 hci_stack->acl_fragmentation_total_size = size; 1003 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1004 1005 return hci_send_acl_packet_fragments(connection); 1006 } 1007 1008 #ifdef ENABLE_CLASSIC 1009 // pre: caller has reserved the packet buffer 1010 uint8_t hci_send_sco_packet_buffer(int size){ 1011 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1012 1013 uint8_t * packet = hci_stack->hci_packet_buffer; 1014 1015 // skip checks in loopback mode 1016 if (!hci_stack->loopback_mode){ 1017 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1018 1019 // check for free places on Bluetooth module 1020 if (!hci_can_send_prepared_sco_packet_now()) { 1021 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1022 hci_release_packet_buffer(); 1023 return BTSTACK_ACL_BUFFERS_FULL; 1024 } 1025 1026 // track send packet in connection struct 1027 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1028 if (!connection) { 1029 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1030 hci_release_packet_buffer(); 1031 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1032 } 1033 1034 if (hci_have_usb_transport()){ 1035 // token used 1036 hci_stack->sco_can_send_now = false; 1037 } else { 1038 if (hci_stack->synchronous_flow_control_enabled){ 1039 connection->num_packets_sent++; 1040 } else { 1041 connection->sco_tx_ready--; 1042 } 1043 } 1044 } 1045 1046 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1047 1048 #ifdef HAVE_SCO_TRANSPORT 1049 hci_stack->sco_transport->send_packet(packet, size); 1050 hci_release_packet_buffer(); 1051 hci_emit_transport_packet_sent(); 1052 1053 return 0; 1054 #else 1055 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1056 uint8_t status; 1057 if (err == 0){ 1058 status = ERROR_CODE_SUCCESS; 1059 } else { 1060 status = ERROR_CODE_HARDWARE_FAILURE; 1061 } 1062 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 1063 hci_release_packet_buffer(); 1064 } 1065 return status; 1066 #endif 1067 } 1068 #endif 1069 1070 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1071 static uint8_t hci_send_iso_packet_fragments(void){ 1072 1073 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1074 uint8_t status = ERROR_CODE_SUCCESS; 1075 // multiple packets could be send on a synchronous HCI transport 1076 while (true){ 1077 1078 // get current data 1079 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1080 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1081 bool more_fragments = false; 1082 1083 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1084 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1085 more_fragments = true; 1086 current_iso_data_packet_length = max_iso_data_packet_length; 1087 } 1088 1089 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1090 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1091 uint8_t pb_flags; 1092 if (iso_header_pos == 0u){ 1093 // first fragment, keep TS field 1094 pb_flags = more_fragments ? 0x00 : 0x02; 1095 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1096 } else { 1097 // later fragment, drop TS field 1098 pb_flags = more_fragments ? 0x01 : 0x03; 1099 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1100 } 1101 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1102 1103 // update header len 1104 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1105 1106 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1107 if (more_fragments){ 1108 // update start of next fragment to send 1109 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1110 } else { 1111 // done 1112 hci_stack->iso_fragmentation_pos = 0; 1113 hci_stack->iso_fragmentation_total_size = 0; 1114 } 1115 1116 // send packet 1117 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1118 const int size = current_iso_data_packet_length + 4; 1119 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1120 hci_stack->iso_fragmentation_tx_active = true; 1121 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1122 if (err != 0){ 1123 // no error from HCI Transport expected 1124 status = ERROR_CODE_HARDWARE_FAILURE; 1125 } 1126 1127 // done yet? 1128 if (!more_fragments) break; 1129 1130 // can send more? 1131 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1132 } 1133 1134 // release buffer now for synchronous transport 1135 if (hci_transport_synchronous()){ 1136 hci_stack->iso_fragmentation_tx_active = false; 1137 hci_release_packet_buffer(); 1138 hci_emit_transport_packet_sent(); 1139 } 1140 1141 return status; 1142 } 1143 1144 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1145 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1146 1147 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1148 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1149 if (iso_stream == NULL){ 1150 hci_release_packet_buffer(); 1151 hci_iso_notify_can_send_now(); 1152 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1153 } 1154 1155 // TODO: check for space on controller 1156 1157 // skip iso packets if needed 1158 if (iso_stream->num_packets_to_skip > 0){ 1159 iso_stream->num_packets_to_skip--; 1160 // pretend it was processed and trigger next one 1161 hci_release_packet_buffer(); 1162 hci_iso_notify_can_send_now(); 1163 return ERROR_CODE_SUCCESS; 1164 } 1165 1166 // track outgoing packet sent 1167 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1168 iso_stream->num_packets_sent++; 1169 1170 // setup data 1171 hci_stack->iso_fragmentation_total_size = size; 1172 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1173 1174 return hci_send_iso_packet_fragments(); 1175 } 1176 #endif 1177 1178 static void acl_handler(uint8_t *packet, uint16_t size){ 1179 1180 // get info 1181 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1182 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1183 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1184 uint16_t acl_length = READ_ACL_LENGTH(packet); 1185 1186 // ignore non-registered handle 1187 if (!conn){ 1188 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1189 return; 1190 } 1191 1192 // assert packet is complete 1193 if ((acl_length + 4u) != size){ 1194 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1195 return; 1196 } 1197 1198 #ifdef ENABLE_CLASSIC 1199 // update idle timestamp 1200 hci_connection_timestamp(conn); 1201 #endif 1202 1203 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1204 hci_stack->host_completed_packets = 1; 1205 conn->num_packets_completed++; 1206 #endif 1207 1208 // handle different packet types 1209 switch (acl_flags & 0x03u) { 1210 1211 case 0x01: // continuation fragment 1212 1213 // sanity checks 1214 if (conn->acl_recombination_pos == 0u) { 1215 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1216 return; 1217 } 1218 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1219 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1220 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1221 conn->acl_recombination_pos = 0; 1222 return; 1223 } 1224 1225 // append fragment payload (header already stored) 1226 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1227 &packet[4], acl_length); 1228 conn->acl_recombination_pos += acl_length; 1229 1230 // forward complete L2CAP packet if complete. 1231 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1232 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1233 // reset recombination buffer 1234 conn->acl_recombination_length = 0; 1235 conn->acl_recombination_pos = 0; 1236 } 1237 break; 1238 1239 case 0x02: { // first fragment 1240 1241 // sanity check 1242 if (conn->acl_recombination_pos) { 1243 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1244 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1245 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1246 } 1247 conn->acl_recombination_pos = 0; 1248 } 1249 1250 // peek into L2CAP packet! 1251 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1252 1253 // compare fragment size to L2CAP packet size 1254 if (acl_length >= (l2cap_length + 4u)){ 1255 // forward fragment as L2CAP packet 1256 hci_emit_acl_packet(packet, acl_length + 4u); 1257 } else { 1258 1259 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1260 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1261 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1262 return; 1263 } 1264 1265 // store first fragment and tweak acl length for complete package 1266 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1267 packet, acl_length + 4u); 1268 conn->acl_recombination_pos = acl_length + 4u; 1269 conn->acl_recombination_length = l2cap_length; 1270 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1271 } 1272 break; 1273 1274 } 1275 default: 1276 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1277 return; 1278 } 1279 1280 // execute main loop 1281 hci_run(); 1282 } 1283 1284 static void hci_connection_stop_timer(hci_connection_t * conn){ 1285 btstack_run_loop_remove_timer(&conn->timeout); 1286 #ifdef ENABLE_CLASSIC 1287 btstack_run_loop_remove_timer(&conn->timeout_sco); 1288 #endif 1289 } 1290 1291 static void hci_shutdown_connection(hci_connection_t *conn){ 1292 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1293 1294 #ifdef ENABLE_CLASSIC 1295 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1296 bd_addr_type_t addr_type = conn->address_type; 1297 #endif 1298 #ifdef HAVE_SCO_TRANSPORT 1299 hci_con_handle_t con_handle = conn->con_handle; 1300 #endif 1301 #endif 1302 1303 hci_connection_stop_timer(conn); 1304 1305 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1306 btstack_memory_hci_connection_free( conn ); 1307 1308 // now it's gone 1309 hci_emit_nr_connections_changed(); 1310 1311 #ifdef ENABLE_CLASSIC 1312 #ifdef ENABLE_SCO_OVER_HCI 1313 // update SCO 1314 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1315 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1316 } 1317 #endif 1318 #ifdef HAVE_SCO_TRANSPORT 1319 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1320 hci_stack->sco_transport->close(con_handle); 1321 } 1322 #endif 1323 #endif 1324 } 1325 1326 #ifdef ENABLE_CLASSIC 1327 1328 static const uint16_t hci_acl_packet_type_sizes[] = { 1329 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1330 HCI_ACL_DH1_SIZE, 0, 0, 0, 1331 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1332 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1333 }; 1334 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1335 0, // 3 slot packets 1336 1, // 5 slot packets 1337 25, // EDR 2 mpbs 1338 26, // EDR 3 mbps 1339 39, // 3 slot EDR packts 1340 40, // 5 slot EDR packet 1341 }; 1342 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1343 0x0f00, // 3 slot packets 1344 0xf000, // 5 slot packets 1345 0x1102, // EDR 2 mpbs 1346 0x2204, // EDR 3 mbps 1347 0x0300, // 3 slot EDR packts 1348 0x3000, // 5 slot EDR packet 1349 }; 1350 1351 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1352 // enable packet types based on size 1353 uint16_t packet_types = 0; 1354 unsigned int i; 1355 for (i=0;i<16;i++){ 1356 if (hci_acl_packet_type_sizes[i] == 0) continue; 1357 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1358 packet_types |= 1 << i; 1359 } 1360 } 1361 // disable packet types due to missing local supported features 1362 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1363 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1364 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1365 if (feature_set) continue; 1366 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1367 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1368 } 1369 return packet_types; 1370 } 1371 1372 uint16_t hci_usable_acl_packet_types(void){ 1373 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1374 // flip bits for "may not be used" 1375 return active_packet_types ^ 0x3306; 1376 } 1377 1378 void hci_enable_acl_packet_types(uint16_t packet_types){ 1379 hci_stack->enabled_packet_types_acl = packet_types; 1380 } 1381 1382 static const struct { 1383 uint8_t feature_index; 1384 uint16_t feature_packet_mask; 1385 } hci_sco_packet_type_feature_requirements[] = { 1386 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1387 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1388 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1389 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1390 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1391 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1392 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1393 }; 1394 1395 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1396 static const struct { 1397 uint16_t type; 1398 uint16_t payload_length; 1399 } hci_sco_packet_type_to_payload_length[] = { 1400 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1401 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1402 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1403 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1404 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1405 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1406 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1407 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1408 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1409 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1410 }; 1411 1412 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1413 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1414 unsigned int i; 1415 // disable packet types due to missing local supported features 1416 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1417 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1418 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1419 if (feature_set) continue; 1420 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1421 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1422 } 1423 return packet_types; 1424 } 1425 1426 uint16_t hci_usable_sco_packet_types(void){ 1427 return hci_stack->usable_packet_types_sco; 1428 } 1429 1430 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1431 uint8_t i; 1432 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1433 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1434 return hci_sco_packet_type_to_payload_length[i].payload_length; 1435 } 1436 } 1437 return 0; 1438 } 1439 1440 #endif 1441 1442 uint8_t* hci_get_outgoing_packet_buffer(void){ 1443 // hci packet buffer is >= acl data packet length 1444 return hci_stack->hci_packet_buffer; 1445 } 1446 1447 uint16_t hci_max_acl_data_packet_length(void){ 1448 return hci_stack->acl_data_packet_length; 1449 } 1450 1451 #ifdef ENABLE_CLASSIC 1452 bool hci_extended_sco_link_supported(void){ 1453 // No. 31, byte 3, bit 7 1454 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1455 } 1456 #endif 1457 1458 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1459 // No. 54, byte 6, bit 6 1460 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1461 } 1462 1463 #ifdef ENABLE_CLASSIC 1464 static bool gap_ssp_supported(void){ 1465 // No. 51, byte 6, bit 3 1466 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1467 } 1468 #endif 1469 1470 bool hci_classic_supported(void){ 1471 #ifdef ENABLE_CLASSIC 1472 // No. 37, byte 4, bit 5, = No BR/EDR Support 1473 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1474 #else 1475 return false; 1476 #endif 1477 } 1478 1479 bool hci_le_supported(void){ 1480 #ifdef ENABLE_BLE 1481 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1482 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1483 #else 1484 return false; 1485 #endif 1486 } 1487 1488 static bool hci_command_supported(uint8_t command_index){ 1489 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1490 } 1491 1492 #ifdef ENABLE_BLE 1493 1494 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1495 bool hci_le_extended_advertising_supported(void){ 1496 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1497 } 1498 #endif 1499 1500 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1501 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1502 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1503 } else { 1504 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1505 } 1506 } 1507 1508 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1509 *addr_type = hci_stack->le_own_addr_type; 1510 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1511 } 1512 1513 #ifdef ENABLE_LE_PERIPHERAL 1514 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1515 *addr_type = hci_stack->le_advertisements_own_addr_type; 1516 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1517 }; 1518 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1519 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1520 if (advertising_handle == 0){ 1521 gap_le_get_own_advertisements_address(addr_type, addr); 1522 } else { 1523 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1524 if (advertising_set != NULL){ 1525 switch (advertising_set->extended_params.own_address_type){ 1526 case BD_ADDR_TYPE_LE_PUBLIC: 1527 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1528 memcpy(addr, hci_stack->local_bd_addr, 6); 1529 break; 1530 case BD_ADDR_TYPE_LE_RANDOM: 1531 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1532 memcpy(addr, advertising_set->random_address, 6); 1533 break; 1534 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1535 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1536 // do nothing as random address was already set from enhanced connection complete 1537 break; 1538 default: 1539 break; 1540 } 1541 } 1542 } 1543 }; 1544 #endif 1545 #endif 1546 1547 #ifdef ENABLE_LE_CENTRAL 1548 1549 /** 1550 * @brief Get own addr type and address used for LE connections (Central) 1551 */ 1552 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1553 *addr_type = hci_stack->le_connection_own_addr_type; 1554 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1555 } 1556 1557 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1558 1559 uint16_t offset = 3; 1560 uint8_t num_reports = packet[offset]; 1561 offset += 1; 1562 1563 uint16_t i; 1564 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1565 for (i=0; (i<num_reports) && (offset < size);i++){ 1566 // sanity checks on data_length: 1567 uint8_t data_length = packet[offset + 8]; 1568 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1569 if ((offset + 9u + data_length + 1u) > size) return; 1570 // setup event 1571 uint8_t event_size = 10u + data_length; 1572 uint16_t pos = 0; 1573 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1574 event[pos++] = event_size; 1575 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1576 offset += 8; 1577 pos += 8; 1578 event[pos++] = packet[offset + 1 + data_length]; // rssi 1579 event[pos++] = data_length; 1580 offset++; 1581 (void)memcpy(&event[pos], &packet[offset], data_length); 1582 pos += data_length; 1583 offset += data_length + 1u; // rssi 1584 hci_emit_btstack_event(event, pos, 1); 1585 } 1586 } 1587 1588 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1589 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1590 uint16_t offset = 3; 1591 uint8_t num_reports = packet[offset++]; 1592 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1593 uint8_t i; 1594 for (i=0; (i<num_reports) && (offset < size);i++){ 1595 // sanity checks on data_length: 1596 uint16_t data_length = packet[offset + 23]; 1597 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1598 if ((offset + 24u + data_length) > size) return; 1599 uint16_t event_type = little_endian_read_16(packet, offset); 1600 offset += 2; 1601 if ((event_type & 0x10) != 0) { 1602 // setup legacy event 1603 uint8_t legacy_event_type; 1604 switch (event_type){ 1605 case 0b0010011: 1606 // ADV_IND 1607 legacy_event_type = 0; 1608 break; 1609 case 0b0010101: 1610 // ADV_DIRECT_IND 1611 legacy_event_type = 1; 1612 break; 1613 case 0b0010010: 1614 // ADV_SCAN_IND 1615 legacy_event_type = 2; 1616 break; 1617 case 0b0010000: 1618 // ADV_NONCONN_IND 1619 legacy_event_type = 3; 1620 break; 1621 case 0b0011011: 1622 case 0b0011010: 1623 // SCAN_RSP 1624 legacy_event_type = 4; 1625 break; 1626 default: 1627 legacy_event_type = 0; 1628 break; 1629 } 1630 uint16_t pos = 0; 1631 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1632 event[pos++] = 10u + data_length; 1633 event[pos++] = legacy_event_type; 1634 // copy address type + address 1635 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1636 offset += 7; 1637 pos += 7; 1638 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1639 offset += 4; 1640 // copy rssi 1641 event[pos++] = packet[offset++]; 1642 // skip periodic advertising interval and direct address 1643 offset += 9; 1644 // copy data len + data; 1645 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1646 pos += 1 +data_length; 1647 offset += 1+ data_length; 1648 hci_emit_btstack_event(event, pos, 1); 1649 } else { 1650 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1651 uint8_t report_len = 24 + data_length; 1652 event[1] = report_len; 1653 little_endian_store_16(event, 2, event_type); 1654 memcpy(&event[4], &packet[offset], report_len); 1655 offset += report_len; 1656 hci_emit_btstack_event(event, 2 + report_len, 1); 1657 } 1658 } 1659 } 1660 #endif 1661 1662 #endif 1663 #endif 1664 1665 #ifdef ENABLE_BLE 1666 #ifdef ENABLE_LE_PERIPHERAL 1667 static void hci_update_advertisements_enabled_for_current_roles(void){ 1668 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1669 // get number of active le slave connections 1670 int num_slave_connections = 0; 1671 btstack_linked_list_iterator_t it; 1672 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1673 while (btstack_linked_list_iterator_has_next(&it)){ 1674 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1675 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1676 if (con->state != OPEN) continue; 1677 if (con->role != HCI_ROLE_SLAVE) continue; 1678 if (!hci_is_le_connection(con)) continue; 1679 num_slave_connections++; 1680 } 1681 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1682 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1683 } else { 1684 hci_stack->le_advertisements_enabled_for_current_roles = false; 1685 } 1686 } 1687 #endif 1688 #endif 1689 1690 #ifdef ENABLE_CLASSIC 1691 static void gap_run_set_local_name(void){ 1692 hci_reserve_packet_buffer(); 1693 uint8_t * packet = hci_stack->hci_packet_buffer; 1694 // construct HCI Command and send 1695 uint16_t opcode = hci_write_local_name.opcode; 1696 packet[0] = opcode & 0xff; 1697 packet[1] = opcode >> 8; 1698 packet[2] = DEVICE_NAME_LEN; 1699 memset(&packet[3], 0, DEVICE_NAME_LEN); 1700 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1701 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1702 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1703 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1704 // expand '00:00:00:00:00:00' in name with bd_addr 1705 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1706 hci_send_prepared_cmd_packet(); 1707 } 1708 1709 static void gap_run_set_eir_data(void){ 1710 hci_reserve_packet_buffer(); 1711 uint8_t * packet = hci_stack->hci_packet_buffer; 1712 // construct HCI Command in-place and send 1713 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1714 uint16_t offset = 0; 1715 packet[offset++] = opcode & 0xff; 1716 packet[offset++] = opcode >> 8; 1717 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1718 packet[offset++] = 0; // FEC not required 1719 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1720 if (hci_stack->eir_data){ 1721 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1722 ad_context_t context; 1723 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1724 uint8_t data_type = ad_iterator_get_data_type(&context); 1725 uint8_t size = ad_iterator_get_data_len(&context); 1726 const uint8_t *data = ad_iterator_get_data(&context); 1727 // copy item 1728 packet[offset++] = size + 1; 1729 packet[offset++] = data_type; 1730 memcpy(&packet[offset], data, size); 1731 // update name item 1732 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1733 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1734 } 1735 offset += size; 1736 } 1737 } else { 1738 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1739 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1740 packet[offset++] = bytes_to_copy + 1; 1741 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1742 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1743 // expand '00:00:00:00:00:00' in name with bd_addr 1744 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1745 } 1746 hci_send_prepared_cmd_packet(); 1747 } 1748 1749 static void hci_run_gap_tasks_classic(void){ 1750 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1751 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1752 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1753 return; 1754 } 1755 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1756 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1757 gap_run_set_local_name(); 1758 return; 1759 } 1760 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1761 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1762 gap_run_set_eir_data(); 1763 return; 1764 } 1765 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1766 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1767 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1768 return; 1769 } 1770 // write page scan activity 1771 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1772 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1773 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1774 return; 1775 } 1776 // write page scan type 1777 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1778 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1779 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1780 return; 1781 } 1782 // write page timeout 1783 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1784 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1785 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1786 return; 1787 } 1788 // send scan enable 1789 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1790 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1791 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1792 return; 1793 } 1794 // send write scan activity 1795 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1796 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1797 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1798 return; 1799 } 1800 // send write inquiry transmit power level 1801 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1802 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1803 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1804 return; 1805 } 1806 } 1807 #endif 1808 1809 #ifndef HAVE_HOST_CONTROLLER_API 1810 1811 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1812 if (!hci_stack->config) return 0; 1813 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1814 // Limit baud rate for Broadcom chipsets to 3 mbps 1815 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1816 baud_rate = 3000000; 1817 } 1818 return baud_rate; 1819 } 1820 1821 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1822 UNUSED(ds); 1823 1824 switch (hci_stack->substate){ 1825 case HCI_INIT_W4_SEND_RESET: 1826 log_info("Resend HCI Reset"); 1827 hci_stack->substate = HCI_INIT_SEND_RESET; 1828 hci_stack->num_cmd_packets = 1; 1829 hci_run(); 1830 break; 1831 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1832 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1833 if (hci_stack->hci_transport->reset_link){ 1834 hci_stack->hci_transport->reset_link(); 1835 } 1836 1837 /* fall through */ 1838 1839 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1840 log_info("Resend HCI Reset - CSR Warm Boot"); 1841 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1842 hci_stack->num_cmd_packets = 1; 1843 hci_run(); 1844 break; 1845 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1846 if (hci_stack->hci_transport->set_baudrate){ 1847 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1848 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1849 hci_stack->hci_transport->set_baudrate(baud_rate); 1850 } 1851 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1852 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1853 if (hci_stack->hci_transport->reset_link){ 1854 log_info("Link Reset"); 1855 hci_stack->hci_transport->reset_link(); 1856 } 1857 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1858 hci_run(); 1859 } 1860 break; 1861 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1862 // otherwise continue 1863 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1864 hci_send_cmd(&hci_read_local_supported_commands); 1865 break; 1866 default: 1867 break; 1868 } 1869 } 1870 #endif 1871 1872 static void hci_initializing_next_state(void){ 1873 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1874 } 1875 1876 static void hci_init_done(void){ 1877 // done. tell the app 1878 log_info("hci_init_done -> HCI_STATE_WORKING"); 1879 hci_stack->state = HCI_STATE_WORKING; 1880 hci_emit_state(); 1881 } 1882 1883 // assumption: hci_can_send_command_packet_now() == true 1884 static void hci_initializing_run(void){ 1885 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1886 1887 if (!hci_can_send_command_packet_now()) return; 1888 1889 #ifndef HAVE_HOST_CONTROLLER_API 1890 bool need_baud_change = hci_stack->config 1891 && hci_stack->chipset 1892 && hci_stack->chipset->set_baudrate_command 1893 && hci_stack->hci_transport->set_baudrate 1894 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1895 #endif 1896 1897 switch (hci_stack->substate){ 1898 case HCI_INIT_SEND_RESET: 1899 hci_state_reset(); 1900 1901 #ifndef HAVE_HOST_CONTROLLER_API 1902 // prepare reset if command complete not received in 100ms 1903 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1904 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1905 btstack_run_loop_add_timer(&hci_stack->timeout); 1906 #endif 1907 // send command 1908 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1909 hci_send_cmd(&hci_reset); 1910 break; 1911 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1912 hci_send_cmd(&hci_read_local_version_information); 1913 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1914 break; 1915 1916 #ifndef HAVE_HOST_CONTROLLER_API 1917 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1918 hci_state_reset(); 1919 // prepare reset if command complete not received in 100ms 1920 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1921 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1922 btstack_run_loop_add_timer(&hci_stack->timeout); 1923 // send command 1924 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1925 hci_send_cmd(&hci_reset); 1926 break; 1927 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1928 hci_state_reset(); 1929 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1930 hci_send_cmd(&hci_reset); 1931 break; 1932 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1933 hci_reserve_packet_buffer(); 1934 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1935 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1936 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1937 hci_send_prepared_cmd_packet(); 1938 break; 1939 } 1940 case HCI_INIT_SET_BD_ADDR: 1941 hci_reserve_packet_buffer(); 1942 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1943 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1944 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1945 hci_send_prepared_cmd_packet(); 1946 break; 1947 case HCI_INIT_SEND_READ_LOCAL_NAME: 1948 #ifdef ENABLE_CLASSIC 1949 hci_send_cmd(&hci_read_local_name); 1950 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1951 break; 1952 #endif 1953 /* fall through */ 1954 1955 case HCI_INIT_SEND_BAUD_CHANGE: 1956 if (need_baud_change) { 1957 hci_reserve_packet_buffer(); 1958 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1959 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1960 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1961 hci_send_prepared_cmd_packet(); 1962 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1963 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1964 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1965 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1966 btstack_run_loop_add_timer(&hci_stack->timeout); 1967 } 1968 break; 1969 } 1970 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1971 1972 /* fall through */ 1973 1974 case HCI_INIT_CUSTOM_INIT: 1975 case HCI_INIT_CUSTOM_PRE_INIT: 1976 // Custom initialization 1977 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1978 hci_reserve_packet_buffer(); 1979 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1980 bool send_cmd = false; 1981 switch (hci_stack->chipset_result){ 1982 case BTSTACK_CHIPSET_VALID_COMMAND: 1983 send_cmd = true; 1984 switch (hci_stack->substate){ 1985 case HCI_INIT_CUSTOM_INIT: 1986 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1987 break; 1988 case HCI_INIT_CUSTOM_PRE_INIT: 1989 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1990 break; 1991 default: 1992 btstack_assert(false); 1993 break; 1994 } 1995 break; 1996 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1997 send_cmd = true; 1998 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1999 log_info("CSR Warm Boot"); 2000 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 2001 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2002 btstack_run_loop_add_timer(&hci_stack->timeout); 2003 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2004 && hci_stack->config 2005 && hci_stack->chipset 2006 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2007 && hci_stack->hci_transport->set_baudrate 2008 && hci_transport_uart_get_main_baud_rate()){ 2009 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2010 } else { 2011 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2012 } 2013 break; 2014 default: 2015 break; 2016 } 2017 2018 if (send_cmd){ 2019 hci_send_prepared_cmd_packet(); 2020 break; 2021 } else { 2022 hci_release_packet_buffer(); 2023 } 2024 log_info("Init script done"); 2025 2026 // Custom Pre-Init complete, start regular init with HCI Reset 2027 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2028 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2029 hci_send_cmd(&hci_reset); 2030 break; 2031 } 2032 2033 // Init script download on Broadcom chipsets causes: 2034 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2035 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2036 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2037 2038 // - baud rate to reset, restore UART baud rate if needed 2039 if (need_baud_change) { 2040 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2041 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2042 hci_stack->hci_transport->set_baudrate(baud_rate); 2043 } 2044 2045 uint16_t bcm_delay_ms = 300; 2046 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2047 // -> Work around: wait here. 2048 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2049 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2050 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2051 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2052 btstack_run_loop_add_timer(&hci_stack->timeout); 2053 break; 2054 } 2055 } 2056 #endif 2057 /* fall through */ 2058 2059 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2060 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2061 hci_send_cmd(&hci_read_local_supported_commands); 2062 break; 2063 case HCI_INIT_READ_BD_ADDR: 2064 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2065 hci_send_cmd(&hci_read_bd_addr); 2066 break; 2067 case HCI_INIT_READ_BUFFER_SIZE: 2068 // only read buffer size if supported 2069 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2070 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2071 hci_send_cmd(&hci_read_buffer_size); 2072 break; 2073 } 2074 2075 /* fall through */ 2076 2077 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2078 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2079 hci_send_cmd(&hci_read_local_supported_features); 2080 break; 2081 2082 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2083 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2084 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2085 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2086 break; 2087 case HCI_INIT_HOST_BUFFER_SIZE: 2088 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2089 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2090 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2091 break; 2092 #endif 2093 2094 case HCI_INIT_SET_EVENT_MASK: 2095 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2096 if (hci_le_supported()){ 2097 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2098 } else { 2099 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2100 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2101 } 2102 break; 2103 2104 case HCI_INIT_SET_EVENT_MASK_2: 2105 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2106 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2107 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2108 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2109 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2110 // Encryption Change Event v2 - bit 25 2111 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2112 break; 2113 } 2114 2115 #ifdef ENABLE_CLASSIC 2116 /* fall through */ 2117 2118 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2119 if (hci_classic_supported() && gap_ssp_supported()){ 2120 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2121 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2122 break; 2123 } 2124 2125 /* fall through */ 2126 2127 case HCI_INIT_WRITE_INQUIRY_MODE: 2128 if (hci_classic_supported()){ 2129 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2130 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2131 break; 2132 } 2133 2134 /* fall through */ 2135 2136 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2137 // skip write secure connections host support if not supported or disabled 2138 if (hci_classic_supported() && hci_stack->secure_connections_enable 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2140 hci_stack->secure_connections_active = true; 2141 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2142 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2143 break; 2144 } 2145 2146 /* fall through */ 2147 2148 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2149 // skip set min encryption key size 2150 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2151 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2152 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2153 break; 2154 } 2155 2156 #ifdef ENABLE_SCO_OVER_HCI 2157 /* fall through */ 2158 2159 // only sent if ENABLE_SCO_OVER_HCI is defined 2160 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2161 // skip write synchronous flow control if not supported 2162 if (hci_classic_supported() 2163 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2164 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2165 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2166 break; 2167 } 2168 /* fall through */ 2169 2170 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2171 // skip write default erroneous data reporting if not supported 2172 if (hci_classic_supported() 2173 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2174 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2175 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2176 break; 2177 } 2178 #endif 2179 2180 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2181 /* fall through */ 2182 2183 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2184 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2185 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2186 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2187 #ifdef ENABLE_SCO_OVER_HCI 2188 log_info("BCM: Route SCO data via HCI transport"); 2189 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2190 #endif 2191 #ifdef ENABLE_SCO_OVER_PCM 2192 log_info("BCM: Route SCO data via PCM interface"); 2193 #ifdef ENABLE_BCM_PCM_WBS 2194 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2195 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2196 #else 2197 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2198 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2199 #endif 2200 #endif 2201 break; 2202 } 2203 #endif 2204 2205 #ifdef ENABLE_SCO_OVER_PCM 2206 /* fall through */ 2207 2208 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2209 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2210 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2211 log_info("BCM: Config PCM interface for I2S"); 2212 #ifdef ENABLE_BCM_PCM_WBS 2213 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2214 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2215 #else 2216 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2217 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2218 #endif 2219 break; 2220 } 2221 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2222 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2223 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2224 log_info("BCM: Config PCM Data format"); 2225 // msb first, fill bits 0, left justified 2226 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2227 break; 2228 } 2229 #ifdef HAVE_BCM_PCM2 2230 case HCI_INIT_BCM_PCM2_SETUP: 2231 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2232 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2233 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2234 uint32_t pcm_clock_freq; 2235 uint8_t ch_0_period; 2236 #ifdef ENABLE_BCM_PCM_WBS 2237 // 512 kHz, resample 8 kHz to 16 khz 2238 pcm_clock_freq = 512000; 2239 ch_0_period = 1; 2240 #else 2241 // 256 khz, 8 khz output 2242 pcm_clock_freq = 256000; 2243 ch_0_period = 0; 2244 #endif 2245 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2246 hci_send_cmd(&hci_bcm_pcm2_setup, 2247 0x00, // Action = Write 2248 0x00, // Test_Options = None 2249 op_mode, // Op_Mode 2250 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2251 pcm_clock_freq, // PCM_Clock_Freq 2252 0x01, // Sync_Signal_Width 2253 0x0F, // Slot_Width 2254 0x01, // NumberOfSlots 2255 0x00, // Bank_0_Fill_Mode = 0s 2256 0x00, // Bank_0_Number_of_Fill_Bits 2257 0x00, // Bank_0_Programmable_Fill_Data 2258 0x00, // Bank_1_Fill_Mode = 0s 2259 0x00, // Bank_1_Number_of_Fill_Bits 2260 0x00, // Bank_1_Programmable_Fill_Data 2261 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2262 0x00, // Ch_0_Slot_Number 2263 0x01, // Ch_1_Slot_Number 2264 0x02, // Ch_2_Slot_Number 2265 0x03, // Ch_3_Slot_Number 2266 0x04, // Ch_4_Slot_Number 2267 ch_0_period, // Ch_0_Period 2268 0x00, // Ch_1_Period 2269 0x00 // Ch_2_Period 2270 ); 2271 break; 2272 } 2273 #endif 2274 #endif /* ENABLE_SCO_OVER_PCM */ 2275 #endif /* ENABLE_CLASSIC */ 2276 2277 #ifdef ENABLE_BLE 2278 /* fall through */ 2279 2280 // LE INIT 2281 case HCI_INIT_LE_READ_BUFFER_SIZE: 2282 if (hci_le_supported()){ 2283 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2284 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2285 hci_send_cmd(&hci_le_read_buffer_size_v2); 2286 } else { 2287 hci_send_cmd(&hci_le_read_buffer_size); 2288 } 2289 break; 2290 } 2291 2292 /* fall through */ 2293 2294 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2295 // skip write le host if not supported (e.g. on LE only EM9301) 2296 if (hci_le_supported() 2297 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2298 // LE Supported Host = 1, Simultaneous Host = 0 2299 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2300 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2301 break; 2302 } 2303 2304 /* fall through */ 2305 2306 case HCI_INIT_LE_SET_EVENT_MASK: 2307 if (hci_le_supported()){ 2308 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2309 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2310 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2311 #else 2312 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2313 #endif 2314 break; 2315 } 2316 #endif 2317 2318 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2319 /* fall through */ 2320 2321 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2322 if (hci_le_supported() 2323 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2324 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2325 hci_send_cmd(&hci_le_read_maximum_data_length); 2326 break; 2327 } 2328 2329 /* fall through */ 2330 2331 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2332 if (hci_le_supported() 2333 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2334 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2335 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2336 break; 2337 } 2338 #endif 2339 2340 #ifdef ENABLE_LE_CENTRAL 2341 /* fall through */ 2342 2343 case HCI_INIT_READ_WHITE_LIST_SIZE: 2344 if (hci_le_supported()){ 2345 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2346 hci_send_cmd(&hci_le_read_white_list_size); 2347 break; 2348 } 2349 2350 #endif 2351 2352 #ifdef ENABLE_LE_PERIPHERAL 2353 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2354 /* fall through */ 2355 2356 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2357 if (hci_le_extended_advertising_supported()){ 2358 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2359 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2360 break; 2361 } 2362 #endif 2363 #endif 2364 /* fall through */ 2365 2366 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2367 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2368 if (hci_le_supported()) { 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 /* fall through */ 2376 2377 case HCI_INIT_DONE: 2378 hci_stack->substate = HCI_INIT_DONE; 2379 // main init sequence complete 2380 #ifdef ENABLE_CLASSIC 2381 // check if initial Classic GAP Tasks are completed 2382 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2383 hci_run_gap_tasks_classic(); 2384 break; 2385 } 2386 #endif 2387 #ifdef ENABLE_BLE 2388 #ifdef ENABLE_LE_CENTRAL 2389 // check if initial LE GAP Tasks are completed 2390 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2391 hci_run_general_gap_le(); 2392 break; 2393 } 2394 #endif 2395 #endif 2396 hci_init_done(); 2397 break; 2398 2399 default: 2400 return; 2401 } 2402 } 2403 2404 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2405 bool command_completed = false; 2406 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2407 uint16_t opcode = little_endian_read_16(packet,3); 2408 if (opcode == hci_stack->last_cmd_opcode){ 2409 command_completed = true; 2410 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2411 } else { 2412 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2413 } 2414 } 2415 2416 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2417 uint8_t status = packet[2]; 2418 uint16_t opcode = little_endian_read_16(packet,4); 2419 if (opcode == hci_stack->last_cmd_opcode){ 2420 if (status){ 2421 command_completed = true; 2422 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2423 } else { 2424 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2425 } 2426 } else { 2427 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2428 } 2429 } 2430 #ifndef HAVE_HOST_CONTROLLER_API 2431 // Vendor == CSR 2432 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2433 // TODO: track actual command 2434 command_completed = true; 2435 } 2436 2437 // Vendor == Toshiba 2438 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2439 // TODO: track actual command 2440 command_completed = true; 2441 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2442 hci_stack->num_cmd_packets = 1; 2443 } 2444 #endif 2445 2446 return command_completed; 2447 } 2448 2449 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2450 2451 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2452 2453 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2454 2455 #ifndef HAVE_HOST_CONTROLLER_API 2456 2457 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2458 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2459 // 2460 // HCI Reset 2461 // Timeout 100 ms 2462 // HCI Reset 2463 // Command Complete Reset 2464 // HCI Read Local Version Information 2465 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2466 // hang... 2467 // 2468 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2469 if (!command_completed 2470 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2471 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2472 2473 uint16_t opcode = little_endian_read_16(packet,3); 2474 if (opcode == hci_reset.opcode){ 2475 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2476 return; 2477 } 2478 } 2479 2480 // CSR & H5 2481 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2482 if (!command_completed 2483 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2484 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2485 2486 uint16_t opcode = little_endian_read_16(packet,3); 2487 if (opcode == hci_reset.opcode){ 2488 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2489 return; 2490 } 2491 } 2492 2493 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2494 // fix: Correct substate and behave as command below 2495 if (command_completed){ 2496 switch (hci_stack->substate){ 2497 case HCI_INIT_SEND_RESET: 2498 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2499 break; 2500 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2501 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2502 break; 2503 default: 2504 break; 2505 } 2506 } 2507 2508 #endif 2509 2510 if (!command_completed) return; 2511 2512 bool need_baud_change = false; 2513 bool need_addr_change = false; 2514 2515 #ifndef HAVE_HOST_CONTROLLER_API 2516 need_baud_change = hci_stack->config 2517 && hci_stack->chipset 2518 && hci_stack->chipset->set_baudrate_command 2519 && hci_stack->hci_transport->set_baudrate 2520 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2521 2522 need_addr_change = hci_stack->custom_bd_addr_set 2523 && hci_stack->chipset 2524 && hci_stack->chipset->set_bd_addr_command; 2525 #endif 2526 2527 switch(hci_stack->substate){ 2528 2529 #ifndef HAVE_HOST_CONTROLLER_API 2530 case HCI_INIT_SEND_RESET: 2531 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2532 // fix: just correct substate and behave as command below 2533 2534 /* fall through */ 2535 #endif 2536 2537 case HCI_INIT_W4_SEND_RESET: 2538 btstack_run_loop_remove_timer(&hci_stack->timeout); 2539 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2540 return; 2541 2542 #ifndef HAVE_HOST_CONTROLLER_API 2543 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2544 // for STLC2500D, baud rate change already happened. 2545 // for others, baud rate gets changed now 2546 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2547 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2548 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2549 hci_stack->hci_transport->set_baudrate(baud_rate); 2550 } 2551 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2552 return; 2553 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2554 btstack_run_loop_remove_timer(&hci_stack->timeout); 2555 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2556 return; 2557 case HCI_INIT_W4_CUSTOM_INIT: 2558 // repeat custom init 2559 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2560 return; 2561 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2562 // repeat custom init 2563 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2564 return; 2565 #endif 2566 2567 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2568 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2569 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2570 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2571 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2572 return; 2573 } 2574 if (need_addr_change){ 2575 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2576 return; 2577 } 2578 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2579 return; 2580 #ifndef HAVE_HOST_CONTROLLER_API 2581 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2582 if (need_baud_change){ 2583 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2584 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2585 hci_stack->hci_transport->set_baudrate(baud_rate); 2586 } 2587 if (need_addr_change){ 2588 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2589 return; 2590 } 2591 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2592 return; 2593 case HCI_INIT_W4_SET_BD_ADDR: 2594 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2595 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2596 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2597 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2598 return; 2599 } 2600 // skipping st warm boot 2601 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2602 return; 2603 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2604 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2605 return; 2606 #endif 2607 2608 case HCI_INIT_DONE: 2609 // set state if we came here by fall through 2610 hci_stack->substate = HCI_INIT_DONE; 2611 return; 2612 2613 default: 2614 break; 2615 } 2616 hci_initializing_next_state(); 2617 } 2618 2619 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2620 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2621 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2622 // check if we have been aware of the HCI connection 2623 switch (conn->state){ 2624 case SENT_CREATE_CONNECTION: 2625 case RECEIVED_CONNECTION_REQUEST: 2626 case ACCEPTED_CONNECTION_REQUEST: 2627 break; 2628 default: 2629 return; 2630 } 2631 2632 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2633 bd_addr_t bd_address; 2634 (void)memcpy(&bd_address, conn->address, 6); 2635 2636 #ifdef ENABLE_CLASSIC 2637 // cache needed data 2638 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2639 #endif 2640 2641 // connection failed, remove entry 2642 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2643 btstack_memory_hci_connection_free( conn ); 2644 2645 #ifdef ENABLE_CLASSIC 2646 // notify client if dedicated bonding 2647 if (notify_dedicated_bonding_failed){ 2648 log_info("hci notify_dedicated_bonding_failed"); 2649 hci_emit_dedicated_bonding_result(bd_address, status); 2650 } 2651 2652 // if authentication error, also delete link key 2653 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2654 gap_drop_link_key_for_bd_addr(bd_address); 2655 } 2656 #else 2657 UNUSED(status); 2658 #endif 2659 } 2660 2661 #ifdef ENABLE_CLASSIC 2662 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2663 // SSP Controller 2664 if (features[6] & (1 << 3)){ 2665 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2666 } 2667 // eSCO 2668 if (features[3] & (1<<7)){ 2669 conn->remote_supported_features[0] |= 1; 2670 } 2671 // Extended features 2672 if (features[7] & (1<<7)){ 2673 conn->remote_supported_features[0] |= 2; 2674 } 2675 // SCO packet types 2676 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2677 } 2678 2679 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2680 // SSP Host 2681 if (features[0] & (1 << 0)){ 2682 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2683 } 2684 // SC Host 2685 if (features[0] & (1 << 3)){ 2686 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2687 } 2688 } 2689 2690 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2691 // SC Controller 2692 if (features[1] & (1 << 0)){ 2693 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2694 } 2695 } 2696 2697 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2698 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2699 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2700 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2701 if (conn->bonding_flags & BONDING_DEDICATED){ 2702 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2703 } 2704 } 2705 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2706 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2707 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2708 } 2709 2710 #endif 2711 2712 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2713 // handle BT initialization 2714 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2715 hci_initializing_event_handler(packet, size); 2716 } 2717 2718 // help with BT sleep 2719 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2720 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2721 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2722 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2723 hci_initializing_next_state(); 2724 } 2725 } 2726 2727 #ifdef ENABLE_CLASSIC 2728 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2729 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2730 conn->requested_security_level = LEVEL_0; 2731 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2732 hci_emit_security_level(conn->con_handle, security_level); 2733 2734 // dedicated bonding 2735 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2736 conn->bonding_flags &= ~BONDING_DEDICATED; 2737 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2738 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2739 // emit dedicated bonding complete, don't disconnect 2740 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2741 #else 2742 // request disconnect, event is emitted after disconnect 2743 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2744 #endif 2745 } 2746 } 2747 2748 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2749 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2750 conn->encryption_key_size = encryption_key_size; 2751 2752 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2753 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2754 hci_handle_mutual_authentication_completed(conn); 2755 } else { 2756 // otherwise trigger remote feature request and send authentication request 2757 hci_trigger_remote_features_for_connection(conn); 2758 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2759 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2760 } 2761 } 2762 } 2763 #endif 2764 2765 static void hci_store_local_supported_commands(const uint8_t * packet){ 2766 // create mapping table 2767 #define X(name, offset, bit) { offset, bit }, 2768 static struct { 2769 uint8_t byte_offset; 2770 uint8_t bit_position; 2771 } supported_hci_commands_map [] = { 2772 SUPPORTED_HCI_COMMANDS 2773 }; 2774 #undef X 2775 2776 // create names for debug purposes 2777 #ifdef ENABLE_LOG_DEBUG 2778 #define X(name, offset, bit) #name, 2779 static const char * command_names[] = { 2780 SUPPORTED_HCI_COMMANDS 2781 }; 2782 #undef X 2783 #endif 2784 2785 hci_stack->local_supported_commands = 0; 2786 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2787 uint16_t i; 2788 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2789 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2790 #ifdef ENABLE_LOG_DEBUG 2791 log_info("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2792 #else 2793 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2794 #endif 2795 hci_stack->local_supported_commands |= (1LU << i); 2796 } 2797 } 2798 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2799 } 2800 2801 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2802 UNUSED(size); 2803 2804 uint8_t status = 0; 2805 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2806 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2807 } 2808 uint16_t manufacturer; 2809 #ifdef ENABLE_CLASSIC 2810 hci_connection_t * conn; 2811 #endif 2812 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2813 hci_con_handle_t handle; 2814 #endif 2815 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2816 le_audio_cig_t * cig; 2817 #endif 2818 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2819 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2820 #endif 2821 2822 // get num cmd packets - limit to 1 to reduce complexity 2823 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2824 2825 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2826 switch (opcode){ 2827 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2828 if (status) break; 2829 // terminate, name 248 chars 2830 packet[6+248] = 0; 2831 log_info("local name: %s", &packet[6]); 2832 break; 2833 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2834 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2835 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2836 uint16_t acl_len = little_endian_read_16(packet, 6); 2837 uint16_t sco_len = packet[8]; 2838 2839 // determine usable ACL/SCO payload size 2840 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2841 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2842 2843 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2844 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2845 2846 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2847 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2848 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2849 } 2850 break; 2851 case HCI_OPCODE_HCI_READ_RSSI: 2852 if (status == ERROR_CODE_SUCCESS){ 2853 uint8_t event[5]; 2854 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2855 event[1] = 3; 2856 (void)memcpy(&event[2], &packet[6], 3); 2857 hci_emit_btstack_event(event, sizeof(event), 1); 2858 } 2859 break; 2860 #ifdef ENABLE_BLE 2861 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2862 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2863 hci_stack->le_iso_packets_total_num = packet[11]; 2864 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2865 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2866 2867 /* fall through */ 2868 2869 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2870 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2871 hci_stack->le_acl_packets_total_num = packet[8]; 2872 // determine usable ACL payload size 2873 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2874 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2875 } 2876 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); 2877 break; 2878 #endif 2879 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2880 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2881 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2882 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2883 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); 2884 break; 2885 #endif 2886 #ifdef ENABLE_LE_CENTRAL 2887 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2888 hci_stack->le_whitelist_capacity = packet[6]; 2889 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2890 break; 2891 #endif 2892 #ifdef ENABLE_LE_PERIPHERAL 2893 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2894 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2895 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2896 break; 2897 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2898 if (hci_stack->le_advertising_set_in_current_command != 0) { 2899 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2900 hci_stack->le_advertising_set_in_current_command = 0; 2901 if (advertising_set == NULL) break; 2902 uint8_t adv_status = packet[6]; 2903 uint8_t tx_power = packet[7]; 2904 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 }; 2905 if (adv_status == 0){ 2906 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2907 } 2908 hci_emit_btstack_event(event, sizeof(event), 1); 2909 } 2910 break; 2911 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2912 if (hci_stack->le_advertising_set_in_current_command != 0) { 2913 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2914 hci_stack->le_advertising_set_in_current_command = 0; 2915 if (advertising_set == NULL) break; 2916 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2917 if (status == 0){ 2918 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2919 } 2920 hci_emit_btstack_event(event, sizeof(event), 1); 2921 } 2922 break; 2923 #endif 2924 #endif 2925 case HCI_OPCODE_HCI_READ_BD_ADDR: 2926 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2927 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2928 #ifdef ENABLE_CLASSIC 2929 if (hci_stack->link_key_db){ 2930 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2931 } 2932 #endif 2933 break; 2934 #ifdef ENABLE_CLASSIC 2935 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2936 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2937 break; 2938 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2939 if (status == ERROR_CODE_SUCCESS) { 2940 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2941 } else { 2942 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2943 } 2944 break; 2945 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2946 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2947 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2948 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2949 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2950 hci_emit_btstack_event(event, sizeof(event), 1); 2951 } 2952 break; 2953 #endif 2954 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2955 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2956 2957 #ifdef ENABLE_CLASSIC 2958 // determine usable ACL packet types based on host buffer size and supported features 2959 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]); 2960 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2961 // determine usable SCO packet types based on supported features 2962 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2963 &hci_stack->local_supported_features[0]); 2964 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2965 #endif 2966 // Classic/LE 2967 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2968 break; 2969 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2970 manufacturer = little_endian_read_16(packet, 10); 2971 // map Cypress & Infineon to Broadcom 2972 switch (manufacturer){ 2973 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2974 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2975 log_info("Treat Cypress/Infineon as Broadcom"); 2976 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2977 little_endian_store_16(packet, 10, manufacturer); 2978 break; 2979 default: 2980 break; 2981 } 2982 hci_stack->manufacturer = manufacturer; 2983 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2984 break; 2985 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2986 hci_store_local_supported_commands(packet); 2987 break; 2988 #ifdef ENABLE_CLASSIC 2989 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2990 if (status) return; 2991 hci_stack->synchronous_flow_control_enabled = 1; 2992 break; 2993 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2994 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2995 conn = hci_connection_for_handle(handle); 2996 if (conn != NULL) { 2997 uint8_t key_size = 0; 2998 if (status == 0){ 2999 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 3000 log_info("Handle %04x key Size: %u", handle, key_size); 3001 } else { 3002 key_size = 1; 3003 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3004 } 3005 hci_handle_read_encryption_key_size_complete(conn, key_size); 3006 } 3007 break; 3008 // assert pairing complete event is emitted. 3009 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3010 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3011 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3012 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3013 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3014 // lookup connection by gap pairing addr 3015 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3016 if (conn == NULL) break; 3017 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3018 break; 3019 3020 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3021 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3022 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3023 uint8_t event[67]; 3024 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3025 event[1] = 65; 3026 (void)memset(&event[2], 0, 65); 3027 if (status == ERROR_CODE_SUCCESS){ 3028 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3029 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3030 event[2] = 3; 3031 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3032 } else { 3033 event[2] = 1; 3034 } 3035 } 3036 hci_emit_btstack_event(event, sizeof(event), 0); 3037 break; 3038 } 3039 3040 // note: only needed if user does not provide OOB data 3041 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3042 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3043 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3044 if (conn == NULL) break; 3045 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3046 break; 3047 #endif 3048 #endif 3049 #ifdef ENABLE_BLE 3050 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3051 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3052 // lookup CIG 3053 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3054 if (cig != NULL){ 3055 uint8_t i = 0; 3056 if (status == ERROR_CODE_SUCCESS){ 3057 // assign CIS handles to pre-allocated CIS 3058 btstack_linked_list_iterator_t it; 3059 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3060 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3061 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3062 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3063 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3064 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3065 iso_stream->cis_handle = cis_handle; 3066 cig->cis_con_handles[i] = cis_handle; 3067 i++; 3068 } 3069 } 3070 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3071 hci_emit_cig_created(cig, status); 3072 } else { 3073 hci_emit_cig_created(cig, status); 3074 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3075 } 3076 } 3077 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3078 break; 3079 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3080 if (status != ERROR_CODE_SUCCESS){ 3081 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3082 } 3083 break; 3084 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3085 if (status != ERROR_CODE_SUCCESS){ 3086 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3087 } 3088 break; 3089 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3090 // lookup BIG by state 3091 btstack_linked_list_iterator_t it; 3092 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3093 while (btstack_linked_list_iterator_has_next(&it)) { 3094 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3095 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3096 if (status == ERROR_CODE_SUCCESS){ 3097 big->state_vars.next_bis++; 3098 if (big->state_vars.next_bis == big->num_bis){ 3099 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3100 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3101 } else { 3102 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3103 } 3104 } else { 3105 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3106 big->state_vars.status = status; 3107 } 3108 return; 3109 } 3110 } 3111 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3112 while (btstack_linked_list_iterator_has_next(&it)) { 3113 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3114 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3115 if (status == ERROR_CODE_SUCCESS){ 3116 big_sync->state_vars.next_bis++; 3117 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3118 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3119 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3120 } else { 3121 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3122 } 3123 } else { 3124 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3125 big_sync->state_vars.status = status; 3126 } 3127 return; 3128 } 3129 } 3130 // Lookup CIS via active group operation 3131 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3132 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3133 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3134 3135 // lookup CIS by state 3136 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3137 while (btstack_linked_list_iterator_has_next(&it)){ 3138 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3139 handle = iso_stream->cis_handle; 3140 bool emit_cis_created = false; 3141 switch (iso_stream->state){ 3142 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3143 if (status != ERROR_CODE_SUCCESS){ 3144 emit_cis_created = true; 3145 break; 3146 } 3147 if (iso_stream->max_sdu_c_to_p > 0){ 3148 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3149 } else { 3150 emit_cis_created = true; 3151 } 3152 break; 3153 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3154 emit_cis_created = true; 3155 break; 3156 default: 3157 break; 3158 } 3159 if (emit_cis_created){ 3160 hci_cis_handle_created(iso_stream, status); 3161 } 3162 } 3163 } else { 3164 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3165 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3166 if (cig != NULL) { 3167 // emit cis created if all ISO Paths have been created 3168 // assume we are central 3169 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3170 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3171 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3172 // if outgoing has been setup, or incoming was setup but outgoing not required 3173 if ((cis_direction == 1) || (outgoing_needed == false)){ 3174 // lookup iso stream by cig/cis 3175 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3176 while (btstack_linked_list_iterator_has_next(&it)) { 3177 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3178 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3179 hci_cis_handle_created(iso_stream, status); 3180 } 3181 } 3182 } 3183 // next state 3184 cig->state_vars.next_cis++; 3185 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3186 } 3187 } 3188 } 3189 break; 3190 } 3191 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3192 // lookup BIG by state 3193 btstack_linked_list_iterator_t it; 3194 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3195 while (btstack_linked_list_iterator_has_next(&it)) { 3196 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3197 uint8_t big_handle = big_sync->big_handle; 3198 switch (big_sync->state){ 3199 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3200 btstack_linked_list_iterator_remove(&it); 3201 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3202 return; 3203 default: 3204 btstack_linked_list_iterator_remove(&it); 3205 hci_emit_big_sync_stopped(big_handle); 3206 return; 3207 } 3208 } 3209 break; 3210 } 3211 #endif 3212 #endif 3213 default: 3214 break; 3215 } 3216 } 3217 3218 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3219 static void 3220 hci_iso_create_big_failed(const le_audio_big_t *big, uint8_t status) { 3221 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 3222 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3223 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3224 hci_emit_big_created(big, status); 3225 } else { 3226 hci_emit_big_terminated(big); 3227 } 3228 } 3229 3230 static void hci_iso_big_sync_failed(const le_audio_big_sync_t *big_sync, uint8_t status) { 3231 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3232 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3233 hci_emit_big_sync_created(big_sync, status); 3234 } else { 3235 hci_emit_big_sync_stopped(big_sync->big_handle); 3236 } 3237 } 3238 #endif 3239 3240 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3241 UNUSED(size); 3242 3243 // get num cmd packets - limit to 1 to reduce complexity 3244 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3245 3246 // get opcode and command status 3247 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3248 3249 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3250 uint8_t status = hci_event_command_status_get_status(packet); 3251 #endif 3252 3253 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3254 bd_addr_type_t addr_type; 3255 bd_addr_t addr; 3256 #endif 3257 3258 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3259 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3260 #endif 3261 3262 switch (opcode){ 3263 #ifdef ENABLE_CLASSIC 3264 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3265 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3266 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3267 #endif 3268 #ifdef ENABLE_LE_CENTRAL 3269 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3270 #endif 3271 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3272 addr_type = hci_stack->outgoing_addr_type; 3273 memcpy(addr, hci_stack->outgoing_addr, 6); 3274 3275 // reset outgoing address info 3276 memset(hci_stack->outgoing_addr, 0, 6); 3277 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3278 3279 // on error 3280 if (status != ERROR_CODE_SUCCESS){ 3281 #ifdef ENABLE_LE_CENTRAL 3282 if (hci_is_le_connection_type(addr_type)){ 3283 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3284 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3285 } 3286 #endif 3287 // error => outgoing connection failed 3288 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3289 if (conn != NULL){ 3290 hci_handle_connection_failed(conn, status); 3291 } 3292 } 3293 break; 3294 #endif 3295 #ifdef ENABLE_CLASSIC 3296 case HCI_OPCODE_HCI_INQUIRY: 3297 if (status == ERROR_CODE_SUCCESS) { 3298 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3299 } else { 3300 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3301 } 3302 break; 3303 #endif 3304 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3305 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3306 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3307 if (status == ERROR_CODE_SUCCESS){ 3308 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3309 } else { 3310 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3311 } 3312 break; 3313 case HCI_OPCODE_HCI_LE_CREATE_BIG: 3314 if (status != ERROR_CODE_SUCCESS){ 3315 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3316 // get current big 3317 le_audio_big_t * big = hci_big_for_handle(hci_stack->iso_active_operation_group_id); 3318 if (big != NULL){ 3319 hci_iso_create_big_failed(big, status); 3320 } 3321 } 3322 break; 3323 case HCI_OPCODE_HCI_LE_BIG_CREATE_SYNC: 3324 if (status != ERROR_CODE_SUCCESS){ 3325 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3326 // get current big sync 3327 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(hci_stack->iso_active_operation_group_id); 3328 if (big_sync != NULL){ 3329 hci_iso_big_sync_failed(big_sync, status); 3330 } 3331 } 3332 break; 3333 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3334 default: 3335 break; 3336 } 3337 } 3338 3339 #ifdef ENABLE_BLE 3340 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3341 gap_event[0] = HCI_EVENT_META_GAP; 3342 gap_event[1] = 36 - 2; 3343 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3344 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3345 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3346 memcpy(&gap_event[3], &hci_event[3], 11); 3347 memset(&gap_event[14], 0, 12); 3348 memcpy(&gap_event[26], &hci_event[14], 7); 3349 memset(&gap_event[33], 0xff, 3); 3350 break; 3351 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3352 memcpy(&gap_event[3], &hci_event[3], 30); 3353 memset(&gap_event[33], 0xff, 3); 3354 break; 3355 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3356 memcpy(&gap_event[3], &hci_event[3], 33); 3357 break; 3358 default: 3359 btstack_unreachable(); 3360 break; 3361 } 3362 } 3363 3364 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3365 bd_addr_t addr; 3366 bd_addr_type_t addr_type; 3367 hci_connection_t * conn; 3368 3369 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3370 uint8_t gap_event[36]; 3371 hci_create_gap_connection_complete_event(hci_event, gap_event); 3372 3373 // read fields 3374 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3375 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3376 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3377 3378 // Connection management 3379 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3380 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3381 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3382 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3383 3384 #ifdef ENABLE_LE_CENTRAL 3385 // handle error: error is reported only to the initiator -> outgoing connection 3386 if (status){ 3387 3388 // handle cancelled outgoing connection 3389 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3390 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3391 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3392 bool connection_was_cancelled = false; 3393 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3394 connection_was_cancelled = true; 3395 // reset state 3396 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3397 // get outgoing connection conn struct for direct connect 3398 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3399 conn = gap_get_outgoing_le_connection(); 3400 conn->state = SEND_CREATE_CONNECTION; 3401 } 3402 } 3403 3404 // free connection if cancelled by user (request == IDLE) 3405 bool cancelled_by_user = hci_stack->le_connecting_request == LE_CONNECTING_IDLE; 3406 if ((conn != NULL) && cancelled_by_user){ 3407 // remove entry 3408 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3409 btstack_memory_hci_connection_free( conn ); 3410 } 3411 3412 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for: 3413 // - outgoing error not caused by connection cancel 3414 // - connection cancelled by user 3415 // by this, no event is emitted for intermediate connection cancel required filterlist modification 3416 if ((connection_was_cancelled == false) || cancelled_by_user){ 3417 hci_emit_event(gap_event, sizeof(gap_event), 1); 3418 } 3419 return; 3420 } 3421 #endif 3422 3423 // on success, both hosts receive connection complete event 3424 if (role == HCI_ROLE_MASTER){ 3425 #ifdef ENABLE_LE_CENTRAL 3426 // if we're master, it was an outgoing connection 3427 // note: no hci_connection_t object exists yet for connect with whitelist 3428 3429 // if a identity addresses was used without enhanced connection complete event, 3430 // the connection complete event contains the current random address of the peer device. 3431 // This random address is needed in the case of a re-pairing 3432 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3433 conn = gap_get_outgoing_le_connection(); 3434 // if outgoing connection object is available, check if identity address was used. 3435 // if yes, track resolved random address and provide rpa 3436 // note: we don't update hci le subevent connection complete 3437 if (conn != NULL){ 3438 if (hci_is_le_identity_address_type(conn->address_type)){ 3439 memcpy(&gap_event[20], &gap_event[8], 6); 3440 gap_event[7] = conn->address_type; 3441 reverse_bd_addr(conn->address, &gap_event[8]); 3442 } 3443 } 3444 } 3445 3446 // we're done with it 3447 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3448 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3449 #endif 3450 } else { 3451 #ifdef ENABLE_LE_PERIPHERAL 3452 // if we're slave, it was an incoming connection, advertisements have stopped 3453 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3454 #endif 3455 } 3456 3457 // LE connections are auto-accepted, so just create a connection if there isn't one already 3458 if (!conn){ 3459 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3460 } 3461 3462 // no memory, sorry. 3463 if (!conn){ 3464 return; 3465 } 3466 3467 conn->state = OPEN; 3468 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3469 conn->le_connection_interval = conn_interval; 3470 3471 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3472 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3473 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3474 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3475 } 3476 #endif 3477 3478 #ifdef ENABLE_LE_PERIPHERAL 3479 if (role == HCI_ROLE_SLAVE){ 3480 hci_update_advertisements_enabled_for_current_roles(); 3481 } 3482 #endif 3483 3484 // init unenhanced att bearer mtu 3485 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3486 conn->att_connection.mtu_exchanged = false; 3487 3488 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3489 3490 // restart timer 3491 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3492 // btstack_run_loop_add_timer(&conn->timeout); 3493 3494 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3495 3496 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3497 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3498 3499 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3500 hci_emit_nr_connections_changed(); 3501 } 3502 #endif 3503 3504 #ifdef ENABLE_CLASSIC 3505 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){ 3506 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3507 // LEVEL_4 is tested by l2cap 3508 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3509 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3510 if (level >= LEVEL_3){ 3511 // MITM not possible without keyboard or display 3512 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3513 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3514 3515 // MITM possible if one side has keyboard and the other has keyboard or display 3516 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3517 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3518 3519 // MITM not possible if one side has only display and other side has no keyboard 3520 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3521 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3522 } 3523 // LEVEL 2 requires SSP, which is a given 3524 return true; 3525 } 3526 3527 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3528 // get requested security level 3529 gap_security_level_t requested_security_level = conn->requested_security_level; 3530 if (hci_stack->gap_secure_connections_only_mode){ 3531 requested_security_level = LEVEL_4; 3532 } 3533 3534 // assess security: LEVEL 4 requires SC 3535 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3536 if ((requested_security_level == LEVEL_4) && 3537 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3538 !hci_remote_sc_enabled(conn)){ 3539 log_info("Level 4 required, but SC not supported -> abort"); 3540 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3541 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3542 return; 3543 } 3544 3545 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3546 // - GAP/MOD/NBON/BV-02-C 3547 // - GAP/DM/NBON/BV-01-C 3548 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3549 switch (conn->io_cap_response_auth_req){ 3550 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3551 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3552 if (hci_stack->bondable == false){ 3553 log_info("Dedicated vs. non-bondable -> abort"); 3554 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3555 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3556 return; 3557 } 3558 default: 3559 break; 3560 } 3561 } 3562 3563 // assess security based on io capabilities 3564 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3565 // responder: fully validate io caps of both sides as well as OOB data 3566 bool security_possible = false; 3567 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3568 3569 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3570 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3571 // so we merge the OOB data availability 3572 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3573 if (conn->classic_oob_c_192 != NULL){ 3574 have_oob_data |= 1; 3575 } 3576 if (conn->classic_oob_c_256 != NULL){ 3577 have_oob_data |= 2; 3578 } 3579 // for up to Level 3, either P-192 as well as P-256 will do 3580 // 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 3581 // if remote does not SC, we should not receive P-256 data either 3582 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3583 security_possible = true; 3584 } 3585 // for Level 4, P-256 is needed 3586 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3587 security_possible = true; 3588 } 3589 #endif 3590 3591 if (security_possible == false){ 3592 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3593 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3594 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3595 return; 3596 } 3597 } else { 3598 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3599 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3600 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3601 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3602 log_info("Level 3+ required, but no input/output -> abort"); 3603 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3604 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3605 return; 3606 } 3607 #endif 3608 #endif 3609 } 3610 3611 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3612 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3613 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3614 } else { 3615 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3616 } 3617 #endif 3618 } 3619 3620 #endif 3621 3622 static void event_handler(uint8_t *packet, uint16_t size){ 3623 3624 uint16_t event_length = packet[1]; 3625 3626 // assert packet is complete 3627 if (size != (event_length + 2u)){ 3628 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3629 return; 3630 } 3631 3632 hci_con_handle_t handle; 3633 hci_connection_t * conn; 3634 int i; 3635 3636 #ifdef ENABLE_CLASSIC 3637 hci_link_type_t link_type; 3638 bd_addr_t addr; 3639 bd_addr_type_t addr_type; 3640 #endif 3641 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3642 hci_iso_stream_t * iso_stream; 3643 le_audio_big_t * big; 3644 le_audio_big_sync_t * big_sync; 3645 #endif 3646 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3647 btstack_linked_list_iterator_t it; 3648 #endif 3649 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3650 uint8_t advertising_handle; 3651 #endif 3652 3653 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3654 3655 switch (hci_event_packet_get_type(packet)) { 3656 3657 case HCI_EVENT_COMMAND_COMPLETE: 3658 handle_command_complete_event(packet, size); 3659 break; 3660 3661 case HCI_EVENT_COMMAND_STATUS: 3662 handle_command_status_event(packet, size); 3663 break; 3664 3665 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3666 if (size < 3) return; 3667 uint16_t num_handles = packet[2]; 3668 if (size != (3u + num_handles * 4u)) return; 3669 #ifdef ENABLE_CLASSIC 3670 bool notify_sco = false; 3671 #endif 3672 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3673 bool notify_iso = false; 3674 #endif 3675 uint16_t offset = 3; 3676 for (i=0; i<num_handles;i++){ 3677 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3678 offset += 2u; 3679 uint16_t num_packets = little_endian_read_16(packet, offset); 3680 offset += 2u; 3681 3682 conn = hci_connection_for_handle(handle); 3683 if (conn != NULL) { 3684 3685 if (conn->num_packets_sent >= num_packets) { 3686 conn->num_packets_sent -= num_packets; 3687 } else { 3688 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3689 conn->num_packets_sent = 0; 3690 } 3691 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3692 #ifdef ENABLE_CLASSIC 3693 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3694 notify_sco = true; 3695 } 3696 #endif 3697 } 3698 3699 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3700 hci_controller_dump_packets(); 3701 #endif 3702 3703 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3704 if (conn == NULL){ 3705 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3706 if (iso_stream != NULL){ 3707 if (iso_stream->num_packets_sent >= num_packets) { 3708 iso_stream->num_packets_sent -= num_packets; 3709 } else { 3710 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3711 iso_stream->num_packets_sent = 0; 3712 } 3713 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3714 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3715 if (big != NULL){ 3716 big->num_completed_timestamp_current_valid = true; 3717 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3718 } 3719 } 3720 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3721 num_packets, handle, iso_stream->num_packets_sent); 3722 notify_iso = true; 3723 } 3724 } 3725 #endif 3726 } 3727 3728 #ifdef ENABLE_CLASSIC 3729 if (notify_sco){ 3730 hci_notify_if_sco_can_send_now(); 3731 } 3732 #endif 3733 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3734 if (notify_iso){ 3735 hci_iso_notify_can_send_now(); 3736 } 3737 #endif 3738 break; 3739 } 3740 3741 #ifdef ENABLE_CLASSIC 3742 case HCI_EVENT_FLUSH_OCCURRED: 3743 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3744 handle = hci_event_flush_occurred_get_handle(packet); 3745 conn = hci_connection_for_handle(handle); 3746 if (conn) { 3747 log_info("Flush occurred, disconnect 0x%04x", handle); 3748 conn->state = SEND_DISCONNECT; 3749 } 3750 break; 3751 3752 case HCI_EVENT_INQUIRY_COMPLETE: 3753 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3754 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3755 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3756 hci_emit_btstack_event(event, sizeof(event), 1); 3757 } 3758 break; 3759 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3760 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3761 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3762 } 3763 break; 3764 case HCI_EVENT_CONNECTION_REQUEST: 3765 reverse_bd_addr(&packet[2], addr); 3766 link_type = (hci_link_type_t) packet[11]; 3767 3768 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3769 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3770 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3771 bd_addr_copy(hci_stack->decline_addr, addr); 3772 break; 3773 } 3774 3775 if (hci_stack->gap_classic_accept_callback != NULL){ 3776 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3777 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3778 bd_addr_copy(hci_stack->decline_addr, addr); 3779 break; 3780 } 3781 } 3782 3783 // TODO: eval COD 8-10 3784 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3785 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3786 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3787 if (!conn) { 3788 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3789 } 3790 if (!conn) { 3791 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3792 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3793 bd_addr_copy(hci_stack->decline_addr, addr); 3794 hci_run(); 3795 // avoid event to higher layer 3796 return; 3797 } 3798 conn->state = RECEIVED_CONNECTION_REQUEST; 3799 // store info about eSCO 3800 if (link_type == HCI_LINK_TYPE_ESCO){ 3801 conn->remote_supported_features[0] |= 1; 3802 } 3803 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3804 if (addr_type == BD_ADDR_TYPE_SCO){ 3805 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3806 // ACL exists unless fuzzing 3807 if (acl_conn != NULL) { 3808 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3809 } 3810 } 3811 hci_run(); 3812 break; 3813 3814 case HCI_EVENT_CONNECTION_COMPLETE: 3815 // Connection management 3816 reverse_bd_addr(&packet[5], addr); 3817 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3818 addr_type = BD_ADDR_TYPE_ACL; 3819 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3820 if (conn) { 3821 switch (conn->state){ 3822 // expected states 3823 case ACCEPTED_CONNECTION_REQUEST: 3824 case SENT_CREATE_CONNECTION: 3825 break; 3826 // unexpected state -> ignore 3827 default: 3828 // don't forward event to app 3829 return; 3830 } 3831 if (!packet[2]){ 3832 conn->state = OPEN; 3833 conn->con_handle = little_endian_read_16(packet, 3); 3834 3835 // trigger write supervision timeout if we're master 3836 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3837 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3838 } 3839 3840 // trigger write automatic flush timeout 3841 if (hci_stack->automatic_flush_timeout != 0){ 3842 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3843 } 3844 3845 // restart timer 3846 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3847 btstack_run_loop_add_timer(&conn->timeout); 3848 3849 // trigger remote features for dedicated bonding 3850 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3851 hci_trigger_remote_features_for_connection(conn); 3852 } 3853 3854 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3855 3856 hci_emit_nr_connections_changed(); 3857 } else { 3858 // connection failed 3859 hci_handle_connection_failed(conn, packet[2]); 3860 } 3861 } 3862 break; 3863 3864 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3865 reverse_bd_addr(&packet[5], addr); 3866 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3867 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3868 3869 // SCO exists unless fuzzer 3870 if (conn == NULL) break; 3871 3872 if (packet[2] != ERROR_CODE_SUCCESS){ 3873 // connection failed, remove entry 3874 hci_handle_connection_failed(conn, packet[2]); 3875 break; 3876 } 3877 3878 conn->state = OPEN; 3879 conn->con_handle = little_endian_read_16(packet, 3); 3880 3881 // update sco payload length for eSCO connections 3882 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3883 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3884 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3885 } 3886 3887 #ifdef ENABLE_SCO_OVER_HCI 3888 // update SCO 3889 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3890 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3891 } 3892 // trigger can send now 3893 if (hci_have_usb_transport()){ 3894 hci_stack->sco_can_send_now = true; 3895 } 3896 3897 // setup implict sco flow control 3898 conn->sco_tx_ready = 0; 3899 conn->sco_tx_active = 0; 3900 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3901 3902 #endif 3903 #ifdef HAVE_SCO_TRANSPORT 3904 // configure sco transport 3905 if (hci_stack->sco_transport != NULL){ 3906 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3907 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3908 } 3909 #endif 3910 break; 3911 3912 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3913 handle = little_endian_read_16(packet, 3); 3914 conn = hci_connection_for_handle(handle); 3915 if (!conn) break; 3916 if (!packet[2]){ 3917 const uint8_t * features = &packet[5]; 3918 hci_handle_remote_features_page_0(conn, features); 3919 3920 // read extended features if possible 3921 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3922 && ((conn->remote_supported_features[0] & 2) != 0)) { 3923 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3924 break; 3925 } 3926 } 3927 hci_handle_remote_features_received(conn); 3928 break; 3929 3930 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3931 handle = little_endian_read_16(packet, 3); 3932 conn = hci_connection_for_handle(handle); 3933 if (!conn) break; 3934 // status = ok, page = 1 3935 if (!packet[2]) { 3936 uint8_t page_number = packet[5]; 3937 uint8_t maximum_page_number = packet[6]; 3938 const uint8_t * features = &packet[7]; 3939 bool done = false; 3940 switch (page_number){ 3941 case 1: 3942 hci_handle_remote_features_page_1(conn, features); 3943 if (maximum_page_number >= 2){ 3944 // get Secure Connections (Controller) from Page 2 if available 3945 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3946 } else { 3947 // otherwise, assume SC (Controller) == SC (Host) 3948 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3949 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3950 } 3951 done = true; 3952 } 3953 break; 3954 case 2: 3955 hci_handle_remote_features_page_2(conn, features); 3956 done = true; 3957 break; 3958 default: 3959 break; 3960 } 3961 if (!done) break; 3962 } 3963 hci_handle_remote_features_received(conn); 3964 break; 3965 3966 case HCI_EVENT_LINK_KEY_REQUEST: 3967 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3968 hci_event_link_key_request_get_bd_addr(packet, addr); 3969 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3970 if (!conn) break; 3971 3972 // lookup link key in db if not cached 3973 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3974 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3975 } 3976 3977 // response sent by hci_run() 3978 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3979 #endif 3980 break; 3981 3982 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3983 hci_event_link_key_request_get_bd_addr(packet, addr); 3984 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3985 if (!conn) break; 3986 3987 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3988 3989 // CVE-2020-26555: ignore NULL link key 3990 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3991 if (btstack_is_null(&packet[8], 16)) break; 3992 3993 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3994 // Change Connection Encryption keeps link key type 3995 if (link_key_type != CHANGED_COMBINATION_KEY){ 3996 conn->link_key_type = link_key_type; 3997 } 3998 3999 // cache link key. link keys stored in little-endian format for legacy reasons 4000 memcpy(&conn->link_key, &packet[8], 16); 4001 4002 // only store link key: 4003 // - if bondable enabled 4004 if (hci_stack->bondable == false) break; 4005 // - if security level sufficient 4006 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 4007 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 4008 break; 4009 } 4010 4011 case HCI_EVENT_PIN_CODE_REQUEST: 4012 hci_event_pin_code_request_get_bd_addr(packet, addr); 4013 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4014 if (!conn) break; 4015 4016 hci_pairing_started(conn, false); 4017 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 4018 if (!hci_stack->bondable ){ 4019 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4020 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 4021 hci_run(); 4022 return; 4023 } 4024 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 4025 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 4026 log_info("Level 4 required, but SC not supported -> abort"); 4027 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4028 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4029 hci_run(); 4030 return; 4031 } 4032 break; 4033 4034 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 4035 hci_event_io_capability_response_get_bd_addr(packet, addr); 4036 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4037 if (!conn) break; 4038 4039 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 4040 hci_pairing_started(conn, true); 4041 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 4042 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 4043 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4044 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 4045 #endif 4046 break; 4047 4048 case HCI_EVENT_IO_CAPABILITY_REQUEST: 4049 hci_event_io_capability_response_get_bd_addr(packet, addr); 4050 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4051 if (!conn) break; 4052 4053 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4054 hci_connection_timestamp(conn); 4055 hci_pairing_started(conn, true); 4056 break; 4057 4058 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4059 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4060 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4061 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4062 if (!conn) break; 4063 4064 hci_connection_timestamp(conn); 4065 4066 hci_pairing_started(conn, true); 4067 4068 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4069 break; 4070 #endif 4071 4072 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4073 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4074 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4075 if (!conn) break; 4076 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4077 if (hci_stack->ssp_auto_accept){ 4078 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4079 }; 4080 } else { 4081 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4082 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4083 // don't forward event to app 4084 hci_run(); 4085 return; 4086 } 4087 break; 4088 4089 case HCI_EVENT_USER_PASSKEY_REQUEST: 4090 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4091 if (hci_stack->ssp_auto_accept){ 4092 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4093 }; 4094 break; 4095 4096 case HCI_EVENT_MODE_CHANGE: 4097 handle = hci_event_mode_change_get_handle(packet); 4098 conn = hci_connection_for_handle(handle); 4099 if (!conn) break; 4100 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4101 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4102 break; 4103 #endif 4104 4105 case HCI_EVENT_ENCRYPTION_CHANGE: 4106 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4107 handle = hci_event_encryption_change_get_connection_handle(packet); 4108 conn = hci_connection_for_handle(handle); 4109 if (!conn) break; 4110 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4111 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4112 if (encryption_enabled){ 4113 if (hci_is_le_connection(conn)){ 4114 // For LE, we accept connection as encrypted 4115 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4116 } 4117 #ifdef ENABLE_CLASSIC 4118 else { 4119 4120 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4121 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4122 bool connected_uses_aes_ccm = encryption_enabled == 2; 4123 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4124 #ifdef ENABLE_TESTING_SUPPORT 4125 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4126 // - GAP/SEC/SEM/BI-31-C 4127 // - GAP/SEC/SEM/BI-32-C 4128 // - GAP/SEC/SEM/BI-33-C 4129 4130 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4131 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4132 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4133 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4134 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4135 } 4136 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4137 conn->link_key_type, new_link_key_type); 4138 conn->link_key_type = new_link_key_type; 4139 #else 4140 log_info("SC during pairing, but only E0 now -> abort"); 4141 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4142 break; 4143 #endif 4144 } 4145 4146 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4147 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4148 if (connected_uses_aes_ccm){ 4149 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4150 } 4151 #else 4152 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4153 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4154 // for all operations that require any security. See BIAS attacks. 4155 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4156 #endif 4157 // validate encryption key size 4158 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4159 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4160 // already got encryption key size 4161 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4162 } else { 4163 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4164 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4165 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4166 } else { 4167 // if not, pretend everything is perfect 4168 hci_handle_read_encryption_key_size_complete(conn, 16); 4169 } 4170 } 4171 } 4172 #endif 4173 } else { 4174 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4175 } 4176 } else { 4177 #ifdef ENABLE_CLASSIC 4178 if (!hci_is_le_connection(conn)){ 4179 uint8_t status = hci_event_encryption_change_get_status(packet); 4180 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4181 conn->bonding_flags &= ~BONDING_DEDICATED; 4182 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4183 conn->bonding_status = status; 4184 } 4185 // trigger security update -> level 0 4186 hci_handle_mutual_authentication_completed(conn); 4187 } 4188 #endif 4189 } 4190 4191 break; 4192 4193 #ifdef ENABLE_CLASSIC 4194 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4195 handle = hci_event_authentication_complete_get_connection_handle(packet); 4196 conn = hci_connection_for_handle(handle); 4197 if (!conn) break; 4198 4199 // clear authentication active flag 4200 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4201 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4202 4203 // authenticated only if auth status == 0 4204 if (hci_event_authentication_complete_get_status(packet) == 0){ 4205 // authenticated 4206 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4207 4208 // If not already encrypted, start encryption 4209 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4210 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4211 break; 4212 } 4213 } 4214 4215 // emit updated security level (will be 0 if not authenticated) 4216 hci_handle_mutual_authentication_completed(conn); 4217 break; 4218 4219 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4220 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4221 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4222 if (!conn) break; 4223 4224 // treat successfully paired connection as authenticated 4225 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4226 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4227 } 4228 4229 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4230 break; 4231 #endif 4232 4233 // HCI_EVENT_DISCONNECTION_COMPLETE 4234 // has been split, to first notify stack before shutting connection down 4235 // see end of function, too. 4236 case HCI_EVENT_DISCONNECTION_COMPLETE: 4237 if (packet[2]) break; // status != 0 4238 handle = little_endian_read_16(packet, 3); 4239 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4240 if (hci_stack->acl_fragmentation_total_size > 0u) { 4241 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4242 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4243 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4244 hci_stack->acl_fragmentation_total_size = 0; 4245 hci_stack->acl_fragmentation_pos = 0; 4246 if (release_buffer){ 4247 hci_release_packet_buffer(); 4248 } 4249 } 4250 } 4251 4252 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4253 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4254 if (hci_stack->iso_fragmentation_total_size > 0u) { 4255 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4256 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4257 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4258 hci_stack->iso_fragmentation_total_size = 0; 4259 hci_stack->iso_fragmentation_pos = 0; 4260 if (release_buffer){ 4261 hci_release_packet_buffer(); 4262 } 4263 } 4264 } 4265 4266 // finalize iso stream for CIS handle 4267 iso_stream = hci_iso_stream_for_con_handle(handle); 4268 if (iso_stream != NULL){ 4269 hci_iso_stream_finalize(iso_stream); 4270 break; 4271 } 4272 4273 // finalize iso stream(s) for ACL handle 4274 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4275 while (btstack_linked_list_iterator_has_next(&it)){ 4276 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4277 if (iso_stream->acl_handle == handle ) { 4278 hci_iso_stream_finalize(iso_stream); 4279 } 4280 } 4281 #endif 4282 4283 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4284 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4285 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4286 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4287 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4288 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4289 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4290 hci_stack->num_cmd_packets = 1; 4291 } 4292 #endif 4293 4294 conn = hci_connection_for_handle(handle); 4295 if (!conn) break; 4296 #ifdef ENABLE_CLASSIC 4297 // pairing failed if it was ongoing 4298 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4299 #endif 4300 4301 // emit dedicatd bonding event 4302 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4303 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4304 } 4305 4306 // mark connection for shutdown, stop timers, reset state 4307 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4308 hci_connection_stop_timer(conn); 4309 hci_connection_init(conn); 4310 4311 #ifdef ENABLE_BLE 4312 #ifdef ENABLE_LE_PERIPHERAL 4313 // re-enable advertisements for le connections if active 4314 if (hci_is_le_connection(conn)){ 4315 hci_update_advertisements_enabled_for_current_roles(); 4316 } 4317 #endif 4318 #endif 4319 break; 4320 4321 case HCI_EVENT_HARDWARE_ERROR: 4322 log_error("Hardware Error: 0x%02x", packet[2]); 4323 if (hci_stack->hardware_error_callback){ 4324 (*hci_stack->hardware_error_callback)(packet[2]); 4325 } else { 4326 // if no special requests, just reboot stack 4327 hci_power_control_off(); 4328 hci_power_control_on(); 4329 } 4330 break; 4331 4332 #ifdef ENABLE_CLASSIC 4333 case HCI_EVENT_ROLE_CHANGE: 4334 if (packet[2]) break; // status != 0 4335 reverse_bd_addr(&packet[3], addr); 4336 addr_type = BD_ADDR_TYPE_ACL; 4337 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4338 if (!conn) break; 4339 conn->role = (hci_role_t) packet[9]; 4340 break; 4341 #endif 4342 4343 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4344 // release packet buffer only for asynchronous transport and if there are not further fragments 4345 if (hci_transport_synchronous()) { 4346 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4347 return; // instead of break: to avoid re-entering hci_run() 4348 } 4349 hci_stack->acl_fragmentation_tx_active = 0; 4350 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4351 hci_stack->iso_fragmentation_tx_active = 0; 4352 if (hci_stack->iso_fragmentation_total_size) break; 4353 #endif 4354 if (hci_stack->acl_fragmentation_total_size) break; 4355 4356 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4357 btstack_assert(hci_stack->hci_packet_buffer_reserved); 4358 hci_stack->hci_packet_buffer_reserved = false; 4359 4360 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4361 hci_iso_notify_can_send_now(); 4362 #endif 4363 // L2CAP receives this event via the hci_emit_event below 4364 4365 #ifdef ENABLE_CLASSIC 4366 // For SCO, we do the can_send_now_check here 4367 hci_notify_if_sco_can_send_now(); 4368 #endif 4369 break; 4370 4371 #ifdef ENABLE_CLASSIC 4372 case HCI_EVENT_SCO_CAN_SEND_NOW: 4373 // For SCO, we do the can_send_now_check here 4374 hci_stack->sco_can_send_now = true; 4375 hci_notify_if_sco_can_send_now(); 4376 return; 4377 4378 // explode inquriy results for easier consumption 4379 case HCI_EVENT_INQUIRY_RESULT: 4380 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4381 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4382 gap_inquiry_explode(packet, size); 4383 break; 4384 #endif 4385 4386 #ifdef ENABLE_BLE 4387 case HCI_EVENT_LE_META: 4388 switch (packet[2]){ 4389 #ifdef ENABLE_LE_CENTRAL 4390 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4391 if (!hci_stack->le_scanning_enabled) break; 4392 le_handle_advertisement_report(packet, size); 4393 break; 4394 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4395 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4396 if (!hci_stack->le_scanning_enabled) break; 4397 le_handle_extended_advertisement_report(packet, size); 4398 break; 4399 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4400 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4401 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4402 break; 4403 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4404 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4405 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4406 while (btstack_linked_list_iterator_has_next(&it)) { 4407 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4408 if (advertising_set->advertising_handle == advertising_handle){ 4409 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4410 } 4411 } 4412 break; 4413 #endif 4414 #endif 4415 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4416 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4417 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4418 hci_handle_le_connection_complete_event(packet); 4419 break; 4420 4421 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4422 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4423 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4424 conn = hci_connection_for_handle(handle); 4425 if (!conn) break; 4426 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4427 break; 4428 4429 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4430 // connection 4431 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4432 conn = hci_connection_for_handle(handle); 4433 if (conn) { 4434 // read arguments 4435 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4436 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4437 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4438 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4439 4440 // validate against current connection parameter range 4441 le_connection_parameter_range_t existing_range; 4442 gap_get_connection_parameter_range(&existing_range); 4443 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4444 if (update_parameter){ 4445 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4446 conn->le_conn_interval_min = le_conn_interval_min; 4447 conn->le_conn_interval_max = le_conn_interval_max; 4448 conn->le_conn_latency = le_conn_latency; 4449 conn->le_supervision_timeout = le_supervision_timeout; 4450 } else { 4451 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4452 } 4453 } 4454 break; 4455 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4456 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4457 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4458 conn = hci_connection_for_handle(handle); 4459 if (conn) { 4460 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4461 } 4462 break; 4463 #endif 4464 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4465 case HCI_SUBEVENT_LE_CIS_REQUEST: 4466 // incoming CIS request, allocate iso stream object and cache metadata 4467 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4468 hci_subevent_le_cis_request_get_cig_id(packet), 4469 hci_subevent_le_cis_request_get_cis_id(packet)); 4470 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4471 if (iso_stream != NULL){ 4472 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4473 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4474 } 4475 break; 4476 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4477 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4478 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4479 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4480 iso_stream = hci_iso_stream_for_con_handle(handle); 4481 btstack_assert(iso_stream != NULL); 4482 // track connection info 4483 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4484 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4485 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4486 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4487 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4488 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4489 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4490 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4491 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4492 // CIS Accept by Peripheral 4493 if (status == ERROR_CODE_SUCCESS){ 4494 if (iso_stream->max_sdu_p_to_c > 0){ 4495 // we're peripheral and we will send data 4496 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4497 } else { 4498 // we're peripheral and we will only receive data 4499 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4500 } 4501 } else { 4502 hci_cis_handle_created(iso_stream, status); 4503 } 4504 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4505 } else { 4506 // CIG Setup by Central 4507 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4508 btstack_assert(cig != NULL); 4509 // update iso stream state 4510 if (status == ERROR_CODE_SUCCESS){ 4511 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4512 } else { 4513 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4514 } 4515 // update cig state 4516 uint8_t i; 4517 for (i=0;i<cig->num_cis;i++){ 4518 if (cig->cis_con_handles[i] == handle){ 4519 cig->cis_setup_active[i] = false; 4520 if (status == ERROR_CODE_SUCCESS){ 4521 cig->cis_established[i] = true; 4522 } else { 4523 hci_cis_handle_created(iso_stream, status); 4524 } 4525 } 4526 } 4527 4528 // trigger iso path setup if complete 4529 bool cis_setup_active = false; 4530 for (i=0;i<cig->num_cis;i++){ 4531 cis_setup_active |= cig->cis_setup_active[i]; 4532 } 4533 if (cis_setup_active == false){ 4534 cig->state_vars.next_cis = 0; 4535 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4536 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4537 } 4538 } 4539 } 4540 break; 4541 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4542 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4543 big = hci_big_for_handle(packet[4]); 4544 if (big != NULL){ 4545 uint8_t status = packet[3]; 4546 if (status == ERROR_CODE_SUCCESS){ 4547 // store bis_con_handles and trigger iso path setup 4548 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4549 uint8_t i; 4550 for (i=0;i<num_bis;i++){ 4551 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4552 big->bis_con_handles[i] = bis_handle; 4553 // assign bis handle 4554 btstack_linked_list_iterator_t it; 4555 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4556 while (btstack_linked_list_iterator_has_next(&it)){ 4557 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4558 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4559 (iso_stream->group_id == big->big_handle)){ 4560 iso_stream->cis_handle = bis_handle; 4561 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4562 break; 4563 } 4564 } 4565 } 4566 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4567 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4568 big->state_vars.next_bis = 0; 4569 } 4570 } else { 4571 // create BIG failed or has been stopped by us 4572 hci_iso_create_big_failed(big, status); 4573 } 4574 } 4575 break; 4576 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4577 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4578 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4579 if (big != NULL){ 4580 // finalize associated ISO streams 4581 btstack_linked_list_iterator_t it; 4582 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4583 while (btstack_linked_list_iterator_has_next(&it)){ 4584 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4585 if (iso_stream->group_id == big->big_handle){ 4586 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4587 btstack_linked_list_iterator_remove(&it); 4588 btstack_memory_hci_iso_stream_free(iso_stream); 4589 } 4590 } 4591 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4592 switch (big->state){ 4593 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4594 hci_emit_big_created(big, big->state_vars.status); 4595 break; 4596 default: 4597 hci_emit_big_terminated(big); 4598 break; 4599 } 4600 } 4601 break; 4602 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4603 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4604 big_sync = hci_big_sync_for_handle(packet[4]); 4605 if (big_sync != NULL){ 4606 uint8_t status = packet[3]; 4607 uint8_t big_handle = packet[4]; 4608 if (status == ERROR_CODE_SUCCESS){ 4609 // store bis_con_handles and trigger iso path setup 4610 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4611 uint8_t i; 4612 for (i=0;i<num_bis;i++){ 4613 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4614 big_sync->bis_con_handles[i] = bis_handle; 4615 // setup iso_stream_t 4616 btstack_linked_list_iterator_t it; 4617 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4618 while (btstack_linked_list_iterator_has_next(&it)){ 4619 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4620 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4621 (iso_stream->group_id == big_sync->big_handle)){ 4622 iso_stream->cis_handle = bis_handle; 4623 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4624 break; 4625 } 4626 } 4627 } 4628 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4629 // trigger iso path setup 4630 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4631 big_sync->state_vars.next_bis = 0; 4632 } 4633 } else { 4634 // create BIG Sync failed or has been stopped by us 4635 hci_iso_big_sync_failed(big_sync, status); 4636 } 4637 } 4638 break; 4639 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4640 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4641 big_sync = hci_big_sync_for_handle(packet[4]); 4642 if (big_sync != NULL){ 4643 uint8_t big_handle = packet[4]; 4644 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4645 hci_emit_big_sync_stopped(big_handle); 4646 } 4647 break; 4648 #endif 4649 default: 4650 break; 4651 } 4652 break; 4653 #endif 4654 case HCI_EVENT_VENDOR_SPECIFIC: 4655 // Vendor specific commands often create vendor specific event instead of num completed packets 4656 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4657 switch (hci_stack->manufacturer){ 4658 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4659 hci_stack->num_cmd_packets = 1; 4660 break; 4661 default: 4662 break; 4663 } 4664 break; 4665 default: 4666 break; 4667 } 4668 4669 handle_event_for_current_stack_state(packet, size); 4670 4671 // notify upper stack 4672 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4673 4674 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4675 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4676 handle = little_endian_read_16(packet, 3); 4677 hci_connection_t * aConn = hci_connection_for_handle(handle); 4678 // discard connection if app did not trigger a reconnect in the event handler 4679 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4680 hci_shutdown_connection(aConn); 4681 } 4682 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4683 hci_controller_dump_packets(); 4684 #endif 4685 } 4686 4687 // execute main loop 4688 hci_run(); 4689 } 4690 4691 #ifdef ENABLE_CLASSIC 4692 4693 static void sco_handler(uint8_t * packet, uint16_t size){ 4694 // lookup connection struct 4695 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4696 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4697 if (!conn) return; 4698 4699 #ifdef ENABLE_SCO_OVER_HCI 4700 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4701 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4702 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4703 packet[2] = 0x3c; 4704 memmove(&packet[3], &packet[23], 63); 4705 size = 63; 4706 } 4707 } 4708 4709 if (hci_have_usb_transport()){ 4710 // Nothing to do 4711 } else { 4712 // 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); 4713 if (hci_stack->synchronous_flow_control_enabled == 0){ 4714 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4715 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4716 if (conn->sco_tx_active == 0){ 4717 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4718 conn->sco_tx_active = 1; 4719 conn->sco_tx_ready = max_sco_packets; 4720 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4721 hci_notify_if_sco_can_send_now(); 4722 } 4723 } else { 4724 if (conn->sco_tx_ready < max_sco_packets){ 4725 conn->sco_tx_ready++; 4726 } 4727 hci_notify_if_sco_can_send_now(); 4728 } 4729 } 4730 } 4731 #endif 4732 4733 // deliver to app 4734 if (hci_stack->sco_packet_handler) { 4735 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4736 } 4737 4738 #ifdef HAVE_SCO_TRANSPORT 4739 // We can send one packet for each received packet 4740 conn->sco_tx_ready++; 4741 hci_notify_if_sco_can_send_now(); 4742 #endif 4743 4744 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4745 conn->num_packets_completed++; 4746 hci_stack->host_completed_packets = 1; 4747 hci_run(); 4748 #endif 4749 } 4750 #endif 4751 4752 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4753 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4754 // propagate ISO packets received as ACL 4755 hci_iso_stream_t * iso_stream = NULL; 4756 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4757 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4758 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4759 if (iso_stream != NULL){ 4760 packet_type = HCI_ISO_DATA_PACKET; 4761 } 4762 } 4763 #endif 4764 4765 hci_dump_packet(packet_type, 1, packet, size); 4766 switch (packet_type) { 4767 case HCI_EVENT_PACKET: 4768 event_handler(packet, size); 4769 break; 4770 case HCI_ACL_DATA_PACKET: 4771 acl_handler(packet, size); 4772 break; 4773 #ifdef ENABLE_CLASSIC 4774 case HCI_SCO_DATA_PACKET: 4775 sco_handler(packet, size); 4776 break; 4777 #endif 4778 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4779 case HCI_ISO_DATA_PACKET: 4780 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4781 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4782 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4783 } 4784 hci_iso_packet_handler(iso_stream, packet, size); 4785 break; 4786 #endif 4787 default: 4788 break; 4789 } 4790 } 4791 4792 /** 4793 * @brief Add event packet handler. 4794 */ 4795 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4796 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4797 } 4798 4799 /** 4800 * @brief Remove event packet handler. 4801 */ 4802 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4803 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4804 } 4805 4806 /** Register HCI packet handlers */ 4807 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4808 hci_stack->acl_packet_handler = handler; 4809 } 4810 4811 #ifdef ENABLE_CLASSIC 4812 /** 4813 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4814 */ 4815 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4816 hci_stack->sco_packet_handler = handler; 4817 } 4818 #endif 4819 4820 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4821 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4822 hci_stack->iso_packet_handler = handler; 4823 } 4824 #endif 4825 4826 static void hci_state_reset(void){ 4827 // no connections yet 4828 hci_stack->connections = NULL; 4829 4830 // keep discoverable/connectable as this has been requested by the client(s) 4831 // hci_stack->discoverable = 0; 4832 // hci_stack->connectable = 0; 4833 // hci_stack->bondable = 1; 4834 // hci_stack->own_addr_type = 0; 4835 4836 // buffer is free 4837 hci_stack->hci_packet_buffer_reserved = false; 4838 4839 // no pending cmds 4840 hci_stack->decline_reason = 0; 4841 4842 hci_stack->secure_connections_active = false; 4843 4844 #ifdef ENABLE_CLASSIC 4845 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4846 4847 hci_stack->gap_tasks_classic = 4848 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4849 GAP_TASK_SET_CLASS_OF_DEVICE | 4850 GAP_TASK_SET_LOCAL_NAME | 4851 GAP_TASK_SET_EIR_DATA | 4852 GAP_TASK_WRITE_SCAN_ENABLE | 4853 GAP_TASK_WRITE_PAGE_TIMEOUT; 4854 #endif 4855 4856 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4857 hci_stack->classic_read_local_oob_data = false; 4858 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4859 #endif 4860 4861 // LE 4862 #ifdef ENABLE_BLE 4863 memset(hci_stack->le_random_address, 0, 6); 4864 hci_stack->le_random_address_set = 0; 4865 #endif 4866 #ifdef ENABLE_LE_CENTRAL 4867 hci_stack->le_scanning_active = false; 4868 hci_stack->le_scanning_param_update = true; 4869 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4870 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4871 hci_stack->le_whitelist_capacity = 0; 4872 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4873 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4874 #endif 4875 #endif 4876 #ifdef ENABLE_LE_PERIPHERAL 4877 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4878 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4879 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4880 } 4881 if (hci_stack->le_advertisements_data != NULL){ 4882 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4883 } 4884 #endif 4885 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4886 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4887 #endif 4888 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4889 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4890 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4891 #endif 4892 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4893 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4894 #endif 4895 } 4896 4897 #ifdef ENABLE_CLASSIC 4898 /** 4899 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4900 */ 4901 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4902 // store and open remote device db 4903 hci_stack->link_key_db = link_key_db; 4904 if (hci_stack->link_key_db) { 4905 hci_stack->link_key_db->open(); 4906 } 4907 } 4908 #endif 4909 4910 void hci_init(const hci_transport_t *transport, const void *config){ 4911 4912 #ifdef HAVE_MALLOC 4913 if (!hci_stack) { 4914 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4915 } 4916 btstack_assert(hci_stack != NULL); 4917 #else 4918 hci_stack = &hci_stack_static; 4919 #endif 4920 memset(hci_stack, 0, sizeof(hci_stack_t)); 4921 4922 // reference to use transport layer implementation 4923 hci_stack->hci_transport = transport; 4924 4925 // reference to used config 4926 hci_stack->config = config; 4927 4928 // setup pointer for outgoing packet buffer 4929 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4930 4931 // max acl payload size defined in config.h 4932 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4933 4934 // register packet handlers with transport 4935 transport->register_packet_handler(&packet_handler); 4936 4937 hci_stack->state = HCI_STATE_OFF; 4938 4939 // class of device 4940 hci_stack->class_of_device = 0x007a020c; // Smartphone 4941 4942 // bondable by default 4943 hci_stack->bondable = 1; 4944 4945 #ifdef ENABLE_CLASSIC 4946 // classic name 4947 hci_stack->local_name = default_classic_name; 4948 4949 // Master slave policy 4950 hci_stack->master_slave_policy = 1; 4951 4952 // Allow Role Switch 4953 hci_stack->allow_role_switch = 1; 4954 4955 // Default / minimum security level = 2 4956 hci_stack->gap_security_level = LEVEL_2; 4957 4958 // Default Security Mode 4 4959 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4960 4961 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4962 hci_stack->gap_required_encyrption_key_size = 7; 4963 4964 // Link Supervision Timeout 4965 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4966 4967 // Page Timeout 4968 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4969 4970 // All ACL packet types are enabledh 4971 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4972 #endif 4973 4974 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4975 hci_stack->ssp_enable = 1; 4976 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4977 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4978 hci_stack->ssp_auto_accept = 1; 4979 4980 // Secure Connections: enable (requires support from Controller) 4981 hci_stack->secure_connections_enable = true; 4982 4983 // voice setting - signed 16 bit pcm data with CVSD over the air 4984 hci_stack->sco_voice_setting = 0x60; 4985 4986 #ifdef ENABLE_BLE 4987 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4988 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4989 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4990 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4991 hci_stack->le_connection_latency = 4; // 4 4992 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4993 hci_stack->le_minimum_ce_length = 0; // 0 ms 4994 hci_stack->le_maximum_ce_length = 0; // 0 ms 4995 #endif 4996 4997 #ifdef ENABLE_LE_CENTRAL 4998 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4999 5000 // default LE Scanning 5001 hci_stack->le_scan_type = 0x01; // active 5002 hci_stack->le_scan_interval = 0x1e0; // 300 ms 5003 hci_stack->le_scan_window = 0x30; // 30 ms 5004 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 5005 #endif 5006 5007 #ifdef ENABLE_LE_PERIPHERAL 5008 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 5009 5010 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 5011 hci_stack->le_advertisements_interval_min = 0x0800; 5012 hci_stack->le_advertisements_interval_max = 0x0800; 5013 hci_stack->le_advertisements_type = 0; 5014 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 5015 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 5016 hci_stack->le_advertisements_channel_map = 0x07; 5017 hci_stack->le_advertisements_filter_policy = 0; 5018 #endif 5019 5020 // connection parameter range used to answer connection parameter update requests in l2cap 5021 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 5022 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 5023 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 5024 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 5025 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 5026 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 5027 5028 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5029 hci_stack->iso_packets_to_queue = 1; 5030 #endif 5031 5032 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5033 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5034 #endif 5035 5036 hci_state_reset(); 5037 } 5038 5039 void hci_deinit(void){ 5040 btstack_run_loop_remove_timer(&hci_stack->timeout); 5041 #ifdef HAVE_MALLOC 5042 if (hci_stack) { 5043 free(hci_stack); 5044 } 5045 #endif 5046 hci_stack = NULL; 5047 5048 #ifdef ENABLE_CLASSIC 5049 disable_l2cap_timeouts = 0; 5050 #endif 5051 } 5052 5053 /** 5054 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5055 */ 5056 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5057 hci_stack->chipset = chipset_driver; 5058 5059 // reset chipset driver - init is also called on power_up 5060 if (hci_stack->chipset && hci_stack->chipset->init){ 5061 hci_stack->chipset->init(hci_stack->config); 5062 } 5063 } 5064 5065 void hci_enable_custom_pre_init(void){ 5066 hci_stack->chipset_pre_init = true; 5067 } 5068 5069 /** 5070 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5071 */ 5072 void hci_set_control(const btstack_control_t *hardware_control){ 5073 // references to used control implementation 5074 hci_stack->control = hardware_control; 5075 // init with transport config 5076 hardware_control->init(hci_stack->config); 5077 } 5078 5079 static void hci_discard_connections(void){ 5080 btstack_linked_list_iterator_t it; 5081 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5082 while (btstack_linked_list_iterator_has_next(&it)){ 5083 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5084 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5085 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5086 hci_shutdown_connection(connection); 5087 } 5088 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5089 while (hci_stack->iso_streams != NULL){ 5090 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5091 } 5092 #endif 5093 } 5094 5095 void hci_close(void){ 5096 5097 #ifdef ENABLE_CLASSIC 5098 // close remote device db 5099 if (hci_stack->link_key_db) { 5100 hci_stack->link_key_db->close(); 5101 } 5102 #endif 5103 5104 hci_discard_connections(); 5105 5106 hci_power_control(HCI_POWER_OFF); 5107 5108 #ifdef HAVE_MALLOC 5109 free(hci_stack); 5110 #endif 5111 hci_stack = NULL; 5112 } 5113 5114 #ifdef HAVE_SCO_TRANSPORT 5115 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5116 hci_stack->sco_transport = sco_transport; 5117 sco_transport->register_packet_handler(&packet_handler); 5118 } 5119 #endif 5120 5121 #ifdef ENABLE_CLASSIC 5122 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5123 // validate ranage and set 5124 if (encryption_key_size < 7) return; 5125 if (encryption_key_size > 16) return; 5126 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5127 } 5128 5129 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5130 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5131 hci_stack->gap_security_mode = security_mode; 5132 return ERROR_CODE_SUCCESS; 5133 } else { 5134 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5135 } 5136 } 5137 5138 gap_security_mode_t gap_get_security_mode(void){ 5139 return hci_stack->gap_security_mode; 5140 } 5141 5142 void gap_set_security_level(gap_security_level_t security_level){ 5143 hci_stack->gap_security_level = security_level; 5144 } 5145 5146 gap_security_level_t gap_get_security_level(void){ 5147 if (hci_stack->gap_secure_connections_only_mode){ 5148 return LEVEL_4; 5149 } 5150 return hci_stack->gap_security_level; 5151 } 5152 5153 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5154 hci_stack->gap_minimal_service_security_level = security_level; 5155 } 5156 5157 void gap_set_secure_connections_only_mode(bool enable){ 5158 hci_stack->gap_secure_connections_only_mode = enable; 5159 } 5160 5161 bool gap_get_secure_connections_only_mode(void){ 5162 return hci_stack->gap_secure_connections_only_mode; 5163 } 5164 #endif 5165 5166 #ifdef ENABLE_CLASSIC 5167 void gap_set_class_of_device(uint32_t class_of_device){ 5168 hci_stack->class_of_device = class_of_device; 5169 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5170 hci_run(); 5171 } 5172 5173 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5174 hci_stack->default_link_policy_settings = default_link_policy_settings; 5175 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5176 hci_run(); 5177 } 5178 5179 void gap_set_allow_role_switch(bool allow_role_switch){ 5180 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5181 } 5182 5183 uint8_t hci_get_allow_role_switch(void){ 5184 return hci_stack->allow_role_switch; 5185 } 5186 5187 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5188 hci_stack->link_supervision_timeout = link_supervision_timeout; 5189 } 5190 5191 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5192 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5193 } 5194 5195 uint16_t hci_automatic_flush_timeout(void){ 5196 return hci_stack->automatic_flush_timeout; 5197 } 5198 5199 void hci_disable_l2cap_timeout_check(void){ 5200 disable_l2cap_timeouts = 1; 5201 } 5202 #endif 5203 5204 #ifndef HAVE_HOST_CONTROLLER_API 5205 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5206 void hci_set_bd_addr(bd_addr_t addr){ 5207 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5208 hci_stack->custom_bd_addr_set = 1; 5209 } 5210 #endif 5211 5212 // State-Module-Driver overview 5213 // state module low-level 5214 // HCI_STATE_OFF off close 5215 // HCI_STATE_INITIALIZING, on open 5216 // HCI_STATE_WORKING, on open 5217 // HCI_STATE_HALTING, on open 5218 // HCI_STATE_SLEEPING, off/sleep close 5219 // HCI_STATE_FALLING_ASLEEP on open 5220 5221 static int hci_power_control_on(void){ 5222 5223 // power on 5224 int err = 0; 5225 if (hci_stack->control && hci_stack->control->on){ 5226 err = (*hci_stack->control->on)(); 5227 } 5228 if (err){ 5229 log_error( "POWER_ON failed"); 5230 hci_emit_hci_open_failed(); 5231 return err; 5232 } 5233 5234 // int chipset driver 5235 if (hci_stack->chipset && hci_stack->chipset->init){ 5236 hci_stack->chipset->init(hci_stack->config); 5237 } 5238 5239 // init transport 5240 if (hci_stack->hci_transport->init){ 5241 hci_stack->hci_transport->init(hci_stack->config); 5242 } 5243 5244 // open transport 5245 err = hci_stack->hci_transport->open(); 5246 if (err){ 5247 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5248 if (hci_stack->control && hci_stack->control->off){ 5249 (*hci_stack->control->off)(); 5250 } 5251 hci_emit_hci_open_failed(); 5252 return err; 5253 } 5254 return 0; 5255 } 5256 5257 static void hci_power_control_off(void){ 5258 5259 log_info("hci_power_control_off"); 5260 5261 // close low-level device 5262 hci_stack->hci_transport->close(); 5263 5264 log_info("hci_power_control_off - hci_transport closed"); 5265 5266 // power off 5267 if (hci_stack->control && hci_stack->control->off){ 5268 (*hci_stack->control->off)(); 5269 } 5270 5271 log_info("hci_power_control_off - control closed"); 5272 5273 hci_stack->state = HCI_STATE_OFF; 5274 } 5275 5276 static void hci_power_control_sleep(void){ 5277 5278 log_info("hci_power_control_sleep"); 5279 5280 #if 0 5281 // don't close serial port during sleep 5282 5283 // close low-level device 5284 hci_stack->hci_transport->close(hci_stack->config); 5285 #endif 5286 5287 // sleep mode 5288 if (hci_stack->control && hci_stack->control->sleep){ 5289 (*hci_stack->control->sleep)(); 5290 } 5291 5292 hci_stack->state = HCI_STATE_SLEEPING; 5293 } 5294 5295 static int hci_power_control_wake(void){ 5296 5297 log_info("hci_power_control_wake"); 5298 5299 // wake on 5300 if (hci_stack->control && hci_stack->control->wake){ 5301 (*hci_stack->control->wake)(); 5302 } 5303 5304 #if 0 5305 // open low-level device 5306 int err = hci_stack->hci_transport->open(hci_stack->config); 5307 if (err){ 5308 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5309 if (hci_stack->control && hci_stack->control->off){ 5310 (*hci_stack->control->off)(); 5311 } 5312 hci_emit_hci_open_failed(); 5313 return err; 5314 } 5315 #endif 5316 5317 return 0; 5318 } 5319 5320 static void hci_power_enter_initializing_state(void){ 5321 // set up state machine 5322 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5323 hci_stack->hci_packet_buffer_reserved = false; 5324 hci_stack->state = HCI_STATE_INITIALIZING; 5325 5326 #ifndef HAVE_HOST_CONTROLLER_API 5327 if (hci_stack->chipset_pre_init) { 5328 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5329 } else 5330 #endif 5331 { 5332 hci_stack->substate = HCI_INIT_SEND_RESET; 5333 } 5334 } 5335 5336 static void hci_power_enter_halting_state(void){ 5337 #ifdef ENABLE_BLE 5338 // drop entries scheduled for removal, mark others for re-adding 5339 btstack_linked_list_iterator_t it; 5340 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5341 while (btstack_linked_list_iterator_has_next(&it)){ 5342 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5343 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5344 btstack_linked_list_iterator_remove(&it); 5345 btstack_memory_whitelist_entry_free(entry); 5346 } else { 5347 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5348 } 5349 } 5350 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5351 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5352 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5353 while (btstack_linked_list_iterator_has_next(&it)){ 5354 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5355 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5356 btstack_linked_list_iterator_remove(&it); 5357 btstack_memory_periodic_advertiser_list_entry_free(entry); 5358 } else { 5359 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5360 continue; 5361 } 5362 } 5363 #endif 5364 #endif 5365 // see hci_run 5366 hci_stack->state = HCI_STATE_HALTING; 5367 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5368 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5369 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5370 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5371 btstack_run_loop_add_timer(&hci_stack->timeout); 5372 } 5373 5374 // returns error 5375 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5376 int err; 5377 switch (power_mode){ 5378 case HCI_POWER_ON: 5379 err = hci_power_control_on(); 5380 if (err != 0) { 5381 log_error("hci_power_control_on() error %d", err); 5382 return err; 5383 } 5384 hci_power_enter_initializing_state(); 5385 break; 5386 case HCI_POWER_OFF: 5387 // do nothing 5388 break; 5389 case HCI_POWER_SLEEP: 5390 // do nothing (with SLEEP == OFF) 5391 break; 5392 default: 5393 btstack_assert(false); 5394 break; 5395 } 5396 return ERROR_CODE_SUCCESS; 5397 } 5398 5399 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5400 switch (power_mode){ 5401 case HCI_POWER_ON: 5402 // do nothing 5403 break; 5404 case HCI_POWER_OFF: 5405 // no connections yet, just turn it off 5406 hci_power_control_off(); 5407 break; 5408 case HCI_POWER_SLEEP: 5409 // no connections yet, just turn it off 5410 hci_power_control_sleep(); 5411 break; 5412 default: 5413 btstack_assert(false); 5414 break; 5415 } 5416 return ERROR_CODE_SUCCESS; 5417 } 5418 5419 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5420 switch (power_mode){ 5421 case HCI_POWER_ON: 5422 // do nothing 5423 break; 5424 case HCI_POWER_OFF: 5425 hci_power_enter_halting_state(); 5426 break; 5427 case HCI_POWER_SLEEP: 5428 // see hci_run 5429 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5430 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5431 break; 5432 default: 5433 btstack_assert(false); 5434 break; 5435 } 5436 return ERROR_CODE_SUCCESS; 5437 } 5438 5439 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5440 switch (power_mode){ 5441 case HCI_POWER_ON: 5442 hci_power_enter_initializing_state(); 5443 break; 5444 case HCI_POWER_OFF: 5445 // do nothing 5446 break; 5447 case HCI_POWER_SLEEP: 5448 // see hci_run 5449 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5450 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5451 break; 5452 default: 5453 btstack_assert(false); 5454 break; 5455 } 5456 return ERROR_CODE_SUCCESS; 5457 } 5458 5459 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5460 switch (power_mode){ 5461 case HCI_POWER_ON: 5462 hci_power_enter_initializing_state(); 5463 break; 5464 case HCI_POWER_OFF: 5465 hci_power_enter_halting_state(); 5466 break; 5467 case HCI_POWER_SLEEP: 5468 // do nothing 5469 break; 5470 default: 5471 btstack_assert(false); 5472 break; 5473 } 5474 return ERROR_CODE_SUCCESS; 5475 } 5476 5477 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5478 int err; 5479 switch (power_mode){ 5480 case HCI_POWER_ON: 5481 err = hci_power_control_wake(); 5482 if (err) return err; 5483 hci_power_enter_initializing_state(); 5484 break; 5485 case HCI_POWER_OFF: 5486 hci_power_enter_halting_state(); 5487 break; 5488 case HCI_POWER_SLEEP: 5489 // do nothing 5490 break; 5491 default: 5492 btstack_assert(false); 5493 break; 5494 } 5495 return ERROR_CODE_SUCCESS; 5496 } 5497 5498 int hci_power_control(HCI_POWER_MODE power_mode){ 5499 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5500 btstack_run_loop_remove_timer(&hci_stack->timeout); 5501 int err = 0; 5502 switch (hci_stack->state){ 5503 case HCI_STATE_OFF: 5504 err = hci_power_control_state_off(power_mode); 5505 break; 5506 case HCI_STATE_INITIALIZING: 5507 err = hci_power_control_state_initializing(power_mode); 5508 break; 5509 case HCI_STATE_WORKING: 5510 err = hci_power_control_state_working(power_mode); 5511 break; 5512 case HCI_STATE_HALTING: 5513 err = hci_power_control_state_halting(power_mode); 5514 break; 5515 case HCI_STATE_FALLING_ASLEEP: 5516 err = hci_power_control_state_falling_asleep(power_mode); 5517 break; 5518 case HCI_STATE_SLEEPING: 5519 err = hci_power_control_state_sleeping(power_mode); 5520 break; 5521 default: 5522 btstack_assert(false); 5523 break; 5524 } 5525 if (err != 0){ 5526 return err; 5527 } 5528 5529 // create internal event 5530 hci_emit_state(); 5531 5532 // trigger next/first action 5533 hci_run(); 5534 5535 return 0; 5536 } 5537 5538 5539 static void hci_halting_run(void) { 5540 5541 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5542 5543 hci_connection_t *connection; 5544 #ifdef ENABLE_BLE 5545 #ifdef ENABLE_LE_PERIPHERAL 5546 bool stop_advertismenets; 5547 #endif 5548 #endif 5549 5550 switch (hci_stack->substate) { 5551 case HCI_HALTING_CLASSIC_STOP: 5552 #ifdef ENABLE_CLASSIC 5553 if (!hci_can_send_command_packet_now()) return; 5554 5555 if (hci_stack->connectable || hci_stack->discoverable){ 5556 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5557 hci_send_cmd(&hci_write_scan_enable, 0); 5558 return; 5559 } 5560 #endif 5561 /* fall through */ 5562 5563 case HCI_HALTING_LE_ADV_STOP: 5564 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5565 5566 #ifdef ENABLE_BLE 5567 #ifdef ENABLE_LE_PERIPHERAL 5568 if (!hci_can_send_command_packet_now()) return; 5569 5570 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5571 5572 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5573 if (hci_le_extended_advertising_supported()){ 5574 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5575 btstack_linked_list_iterator_t it; 5576 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5577 // stop all periodic advertisements and check if an extended set is active 5578 while (btstack_linked_list_iterator_has_next(&it)){ 5579 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5580 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5581 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5582 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5583 return; 5584 } 5585 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5586 stop_advertismenets = true; 5587 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5588 } 5589 } 5590 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5591 if (stop_advertismenets){ 5592 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5593 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5594 return; 5595 } 5596 } else 5597 #else /* ENABLE_LE_PERIPHERAL */ 5598 { 5599 if (stop_advertismenets) { 5600 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5601 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5602 return; 5603 } 5604 } 5605 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5606 #endif /* ENABLE_LE_PERIPHERAL */ 5607 #endif /* ENABLE_BLE */ 5608 5609 /* fall through */ 5610 5611 case HCI_HALTING_LE_SCAN_STOP: 5612 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5613 if (!hci_can_send_command_packet_now()) return; 5614 5615 #ifdef ENABLE_BLE 5616 #ifdef ENABLE_LE_CENTRAL 5617 if (hci_stack->le_scanning_active){ 5618 hci_le_scan_stop(); 5619 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5620 return; 5621 } 5622 #endif 5623 #endif 5624 5625 /* fall through */ 5626 5627 case HCI_HALTING_DISCONNECT_ALL: 5628 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5629 if (!hci_can_send_command_packet_now()) return; 5630 5631 // close all open connections 5632 connection = (hci_connection_t *) hci_stack->connections; 5633 if (connection) { 5634 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5635 5636 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5637 5638 // check state 5639 switch(connection->state) { 5640 case SENT_DISCONNECT: 5641 case RECEIVED_DISCONNECTION_COMPLETE: 5642 // wait until connection is gone 5643 return; 5644 default: 5645 break; 5646 } 5647 5648 // finally, send the disconnect command 5649 connection->state = SENT_DISCONNECT; 5650 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5651 return; 5652 } 5653 5654 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5655 // stop BIGs and BIG Syncs 5656 if (hci_stack->le_audio_bigs != NULL){ 5657 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5658 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5659 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5660 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5661 return; 5662 } 5663 if (hci_stack->le_audio_big_syncs != NULL){ 5664 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5665 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5666 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5667 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5668 return; 5669 } 5670 #endif 5671 5672 btstack_run_loop_remove_timer(&hci_stack->timeout); 5673 5674 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5675 log_info("HCI_STATE_HALTING: wait 50 ms"); 5676 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5677 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5678 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5679 btstack_run_loop_add_timer(&hci_stack->timeout); 5680 break; 5681 5682 case HCI_HALTING_W4_CLOSE_TIMER: 5683 // keep waiting 5684 break; 5685 5686 case HCI_HALTING_CLOSE: 5687 // close left over connections (that had not been properly closed before) 5688 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5689 hci_discard_connections(); 5690 5691 log_info("HCI_STATE_HALTING, calling off"); 5692 5693 // switch mode 5694 hci_power_control_off(); 5695 5696 log_info("HCI_STATE_HALTING, emitting state"); 5697 hci_emit_state(); 5698 log_info("HCI_STATE_HALTING, done"); 5699 break; 5700 5701 default: 5702 break; 5703 } 5704 }; 5705 5706 static void hci_falling_asleep_run(void){ 5707 hci_connection_t * connection; 5708 switch(hci_stack->substate) { 5709 case HCI_FALLING_ASLEEP_DISCONNECT: 5710 log_info("HCI_STATE_FALLING_ASLEEP"); 5711 // close all open connections 5712 connection = (hci_connection_t *) hci_stack->connections; 5713 if (connection){ 5714 5715 // send disconnect 5716 if (!hci_can_send_command_packet_now()) return; 5717 5718 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5719 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5720 5721 // send disconnected event right away - causes higher layer connections to get closed, too. 5722 hci_shutdown_connection(connection); 5723 return; 5724 } 5725 5726 if (hci_classic_supported()){ 5727 // disable page and inquiry scan 5728 if (!hci_can_send_command_packet_now()) return; 5729 5730 log_info("HCI_STATE_HALTING, disabling inq scans"); 5731 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5732 5733 // continue in next sub state 5734 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5735 break; 5736 } 5737 5738 /* fall through */ 5739 5740 case HCI_FALLING_ASLEEP_COMPLETE: 5741 log_info("HCI_STATE_HALTING, calling sleep"); 5742 // switch mode 5743 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5744 hci_emit_state(); 5745 break; 5746 5747 default: 5748 break; 5749 } 5750 } 5751 5752 #ifdef ENABLE_CLASSIC 5753 5754 static void hci_update_scan_enable(void){ 5755 // 2 = page scan, 1 = inq scan 5756 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5757 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5758 hci_run(); 5759 } 5760 5761 void gap_discoverable_control(uint8_t enable){ 5762 if (enable) enable = 1; // normalize argument 5763 5764 if (hci_stack->discoverable == enable){ 5765 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5766 return; 5767 } 5768 5769 hci_stack->discoverable = enable; 5770 hci_update_scan_enable(); 5771 } 5772 5773 void gap_connectable_control(uint8_t enable){ 5774 if (enable) enable = 1; // normalize argument 5775 5776 // don't emit event 5777 if (hci_stack->connectable == enable) return; 5778 5779 hci_stack->connectable = enable; 5780 hci_update_scan_enable(); 5781 } 5782 #endif 5783 5784 void gap_local_bd_addr(bd_addr_t address_buffer){ 5785 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5786 } 5787 5788 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5789 static void hci_host_num_completed_packets(void){ 5790 5791 // create packet manually as arrays are not supported and num_commands should not get reduced 5792 hci_reserve_packet_buffer(); 5793 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5794 5795 uint16_t size = 0; 5796 uint16_t num_handles = 0; 5797 packet[size++] = 0x35; 5798 packet[size++] = 0x0c; 5799 size++; // skip param len 5800 size++; // skip num handles 5801 5802 // add { handle, packets } entries 5803 btstack_linked_item_t * it; 5804 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5805 hci_connection_t * connection = (hci_connection_t *) it; 5806 if (connection->num_packets_completed){ 5807 little_endian_store_16(packet, size, connection->con_handle); 5808 size += 2; 5809 little_endian_store_16(packet, size, connection->num_packets_completed); 5810 size += 2; 5811 // 5812 num_handles++; 5813 connection->num_packets_completed = 0; 5814 } 5815 } 5816 5817 packet[2] = size - 3; 5818 packet[3] = num_handles; 5819 5820 hci_stack->host_completed_packets = 0; 5821 5822 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5823 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5824 5825 // release packet buffer for synchronous transport implementations 5826 if (hci_transport_synchronous()){ 5827 hci_release_packet_buffer(); 5828 hci_emit_transport_packet_sent(); 5829 } 5830 } 5831 #endif 5832 5833 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5834 UNUSED(ds); 5835 hci_stack->substate = HCI_HALTING_CLOSE; 5836 hci_halting_run(); 5837 } 5838 5839 static bool hci_run_acl_fragments(void){ 5840 if (hci_stack->acl_fragmentation_total_size > 0u) { 5841 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5842 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5843 if (connection) { 5844 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5845 hci_send_acl_packet_fragments(connection); 5846 return true; 5847 } 5848 } else { 5849 // connection gone -> discard further fragments 5850 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5851 hci_stack->acl_fragmentation_total_size = 0; 5852 hci_stack->acl_fragmentation_pos = 0; 5853 } 5854 } 5855 return false; 5856 } 5857 5858 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5859 static bool hci_run_iso_fragments(void){ 5860 if (hci_stack->iso_fragmentation_total_size > 0u) { 5861 // TODO: flow control 5862 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5863 hci_send_iso_packet_fragments(); 5864 return true; 5865 } 5866 } 5867 return false; 5868 } 5869 #endif 5870 5871 #ifdef ENABLE_CLASSIC 5872 5873 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5874 static bool hci_classic_operation_active(void) { 5875 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5876 return true; 5877 } 5878 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5879 return true; 5880 } 5881 btstack_linked_item_t * it; 5882 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5883 hci_connection_t *connection = (hci_connection_t *) it; 5884 switch (connection->state) { 5885 case SENT_CREATE_CONNECTION: 5886 case SENT_CANCEL_CONNECTION: 5887 case SENT_DISCONNECT: 5888 return true; 5889 default: 5890 break; 5891 } 5892 } 5893 return false; 5894 } 5895 #endif 5896 5897 static bool hci_run_general_gap_classic(void){ 5898 5899 // assert stack is working and classic is active 5900 if (hci_classic_supported() == false) return false; 5901 if (hci_stack->state != HCI_STATE_WORKING) return false; 5902 5903 // decline incoming connections 5904 if (hci_stack->decline_reason){ 5905 uint8_t reason = hci_stack->decline_reason; 5906 hci_stack->decline_reason = 0; 5907 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5908 return true; 5909 } 5910 5911 if (hci_stack->gap_tasks_classic != 0){ 5912 hci_run_gap_tasks_classic(); 5913 return true; 5914 } 5915 5916 // start/stop inquiry 5917 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5918 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5919 if (hci_classic_operation_active() == false) 5920 #endif 5921 { 5922 uint8_t duration = hci_stack->inquiry_state; 5923 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5924 if (hci_stack->inquiry_max_period_length != 0){ 5925 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); 5926 } else { 5927 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5928 } 5929 return true; 5930 } 5931 } 5932 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5933 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5934 hci_send_cmd(&hci_inquiry_cancel); 5935 return true; 5936 } 5937 5938 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5939 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5940 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5941 return true; 5942 } 5943 5944 // remote name request 5945 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5946 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5947 if (hci_classic_operation_active() == false) 5948 #endif 5949 { 5950 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5951 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5952 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5953 return true; 5954 } 5955 } 5956 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5957 // Local OOB data 5958 if (hci_stack->classic_read_local_oob_data){ 5959 hci_stack->classic_read_local_oob_data = false; 5960 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5961 hci_send_cmd(&hci_read_local_extended_oob_data); 5962 } else { 5963 hci_send_cmd(&hci_read_local_oob_data); 5964 } 5965 } 5966 #endif 5967 // pairing 5968 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5969 uint8_t state = hci_stack->gap_pairing_state; 5970 uint8_t pin_code[PIN_CODE_LEN]; 5971 switch (state){ 5972 case GAP_PAIRING_STATE_SEND_PIN: 5973 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5974 memset(pin_code, 0, 16); 5975 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5976 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5977 break; 5978 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5979 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5980 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5981 break; 5982 case GAP_PAIRING_STATE_SEND_PASSKEY: 5983 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5984 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5985 break; 5986 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5987 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5988 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5989 break; 5990 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5991 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5992 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5993 break; 5994 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5995 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5996 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5997 break; 5998 default: 5999 break; 6000 } 6001 return true; 6002 } 6003 return false; 6004 } 6005 #endif 6006 6007 #ifdef ENABLE_BLE 6008 6009 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6010 static uint8_t hci_le_num_phys(uint8_t phys){ 6011 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 6012 btstack_assert(phys); 6013 return num_bits_set[phys]; 6014 } 6015 #endif 6016 6017 #ifdef ENABLE_LE_CENTRAL 6018 static void hci_le_scan_stop(void){ 6019 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6020 if (hci_le_extended_advertising_supported()) { 6021 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 6022 } else 6023 #endif 6024 { 6025 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 6026 } 6027 } 6028 6029 static void 6030 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 6031 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6032 if (hci_le_extended_advertising_supported()) { 6033 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6034 uint16_t le_connection_scan_interval[3]; 6035 uint16_t le_connection_scan_window[3]; 6036 uint16_t le_connection_interval_min[3]; 6037 uint16_t le_connection_interval_max[3]; 6038 uint16_t le_connection_latency[3]; 6039 uint16_t le_supervision_timeout[3]; 6040 uint16_t le_minimum_ce_length[3]; 6041 uint16_t le_maximum_ce_length[3]; 6042 6043 uint8_t i; 6044 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6045 for (i=0;i<num_phys;i++){ 6046 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6047 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6048 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6049 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6050 le_connection_latency[i] = hci_stack->le_connection_latency; 6051 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6052 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6053 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6054 } 6055 hci_send_cmd(&hci_le_extended_create_connection, 6056 initiator_filter_policy, 6057 hci_stack->le_connection_own_addr_type, // our addr type: 6058 address_type, // peer address type 6059 address, // peer bd addr 6060 hci_stack->le_connection_phys, // initiating PHY 6061 le_connection_scan_interval, // conn scan interval 6062 le_connection_scan_window, // conn scan windows 6063 le_connection_interval_min, // conn interval min 6064 le_connection_interval_max, // conn interval max 6065 le_connection_latency, // conn latency 6066 le_supervision_timeout, // conn latency 6067 le_minimum_ce_length, // min ce length 6068 le_maximum_ce_length // max ce length 6069 ); 6070 } else 6071 #endif 6072 { 6073 hci_send_cmd(&hci_le_create_connection, 6074 hci_stack->le_connection_scan_interval, // conn scan interval 6075 hci_stack->le_connection_scan_window, // conn scan windows 6076 initiator_filter_policy, // don't use whitelist 6077 address_type, // peer address type 6078 address, // peer bd addr 6079 hci_stack->le_connection_own_addr_type, // our addr type: 6080 hci_stack->le_connection_interval_min, // conn interval min 6081 hci_stack->le_connection_interval_max, // conn interval max 6082 hci_stack->le_connection_latency, // conn latency 6083 hci_stack->le_supervision_timeout, // conn latency 6084 hci_stack->le_minimum_ce_length, // min ce length 6085 hci_stack->le_maximum_ce_length // max ce length 6086 ); 6087 } 6088 } 6089 #endif 6090 6091 #ifdef ENABLE_LE_PERIPHERAL 6092 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6093 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6094 uint8_t operation = 0; 6095 if (pos == 0){ 6096 // first fragment or complete data 6097 operation |= 1; 6098 } 6099 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6100 // last fragment or complete data 6101 operation |= 2; 6102 } 6103 return operation; 6104 } 6105 #endif 6106 #endif 6107 6108 static bool hci_whitelist_modification_pending(void) { 6109 btstack_linked_list_iterator_t it; 6110 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6111 while (btstack_linked_list_iterator_has_next(&it)){ 6112 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6113 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6114 return true; 6115 } 6116 } 6117 return false; 6118 } 6119 6120 static bool hci_whitelist_modification_process(void){ 6121 // add/remove entries 6122 btstack_linked_list_iterator_t it; 6123 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6124 while (btstack_linked_list_iterator_has_next(&it)){ 6125 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6126 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6127 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6128 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6129 bd_addr_type_t address_type = entry->address_type; 6130 bd_addr_t address; 6131 memcpy(address, entry->address, 6); 6132 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6133 // remove from whitelist if not scheduled for re-addition 6134 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6135 btstack_memory_whitelist_entry_free(entry); 6136 } 6137 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6138 return true; 6139 } 6140 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6141 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6142 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6143 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6144 return true; 6145 } 6146 } 6147 return false; 6148 } 6149 6150 static bool hci_run_general_gap_le(void){ 6151 6152 btstack_linked_list_iterator_t lit; 6153 6154 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6155 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6156 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6157 hci_stack->le_resolvable_private_address_update_s = 0; 6158 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6159 return true; 6160 } 6161 #endif 6162 6163 // Phase 1: collect what to stop 6164 6165 #ifdef ENABLE_LE_CENTRAL 6166 bool scanning_stop = false; 6167 bool connecting_stop = false; 6168 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6169 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6170 bool periodic_sync_stop = false; 6171 #endif 6172 #endif 6173 #endif 6174 6175 #ifdef ENABLE_LE_PERIPHERAL 6176 bool advertising_stop = false; 6177 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6178 le_advertising_set_t * advertising_stop_set = NULL; 6179 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6180 bool periodic_advertising_stop = false; 6181 #endif 6182 #endif 6183 #endif 6184 6185 // check if own address changes 6186 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6187 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6188 6189 // check if whitelist needs modification 6190 bool whitelist_modification_pending = hci_whitelist_modification_pending(); 6191 6192 // check if resolving list needs modification 6193 bool resolving_list_modification_pending = false; 6194 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6195 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6196 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6197 resolving_list_modification_pending = true; 6198 } 6199 #endif 6200 6201 #ifdef ENABLE_LE_CENTRAL 6202 6203 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6204 // check if periodic advertiser list needs modification 6205 bool periodic_list_modification_pending = false; 6206 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6207 while (btstack_linked_list_iterator_has_next(&lit)){ 6208 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6209 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6210 periodic_list_modification_pending = true; 6211 break; 6212 } 6213 } 6214 #endif 6215 6216 // scanning control 6217 if (hci_stack->le_scanning_active) { 6218 // stop if: 6219 // - parameter change required 6220 // - it's disabled 6221 // - whitelist change required but used for scanning 6222 // - resolving list modified 6223 // - own address changes 6224 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6225 if ((hci_stack->le_scanning_param_update) || 6226 !hci_stack->le_scanning_enabled || 6227 (scanning_uses_whitelist && whitelist_modification_pending) || 6228 resolving_list_modification_pending || 6229 random_address_change){ 6230 6231 scanning_stop = true; 6232 } 6233 } 6234 6235 // connecting control 6236 bool connecting_with_whitelist; 6237 switch (hci_stack->le_connecting_state){ 6238 case LE_CONNECTING_DIRECT: 6239 case LE_CONNECTING_WHITELIST: 6240 // stop connecting if: 6241 // - connecting uses white and whitelist modification pending 6242 // - if it got disabled 6243 // - resolving list modified 6244 // - own address changes 6245 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6246 if ((connecting_with_whitelist && whitelist_modification_pending) || 6247 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6248 resolving_list_modification_pending || 6249 random_address_change) { 6250 6251 connecting_stop = true; 6252 } 6253 break; 6254 default: 6255 break; 6256 } 6257 6258 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6259 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6260 // periodic sync control 6261 bool sync_with_advertiser_list; 6262 switch(hci_stack->le_periodic_sync_state){ 6263 case LE_CONNECTING_DIRECT: 6264 case LE_CONNECTING_WHITELIST: 6265 // stop sync if: 6266 // - sync with advertiser list and advertiser list modification pending 6267 // - if it got disabled 6268 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6269 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6270 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6271 periodic_sync_stop = true; 6272 } 6273 break; 6274 default: 6275 break; 6276 } 6277 #endif 6278 #endif 6279 6280 #endif /* ENABLE_LE_CENTRAL */ 6281 6282 #ifdef ENABLE_LE_PERIPHERAL 6283 // le advertisement control 6284 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6285 // stop if: 6286 // - parameter change required 6287 // - random address used in advertising and changes 6288 // - it's disabled 6289 // - whitelist change required but used for advertisement filter policy 6290 // - resolving list modified 6291 // - own address changes 6292 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6293 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6294 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6295 if (advertising_change || 6296 (advertising_uses_random_address && random_address_change) || 6297 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6298 (advertising_uses_whitelist && whitelist_modification_pending) || 6299 resolving_list_modification_pending || 6300 random_address_change) { 6301 6302 advertising_stop = true; 6303 } 6304 } 6305 6306 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6307 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6308 btstack_linked_list_iterator_t it; 6309 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6310 while (btstack_linked_list_iterator_has_next(&it)){ 6311 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6312 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6313 // stop if: 6314 // - parameter change required 6315 // - random address used in connectable advertising and changes 6316 // - it's disabled 6317 // - whitelist change required but used for advertisement filter policy 6318 // - resolving list modified 6319 // - own address changes 6320 // - advertisement set will be removed 6321 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6322 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6323 bool advertising_uses_random_address = 6324 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6325 advertising_connectable; 6326 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6327 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6328 bool advertising_set_random_address_change = 6329 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6330 bool advertising_set_will_be_removed = 6331 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6332 if (advertising_parameter_change || 6333 (advertising_uses_random_address && advertising_set_random_address_change) || 6334 (advertising_enabled == false) || 6335 (advertising_uses_whitelist && whitelist_modification_pending) || 6336 resolving_list_modification_pending || 6337 advertising_set_will_be_removed) { 6338 6339 advertising_stop = true; 6340 advertising_stop_set = advertising_set; 6341 break; 6342 } 6343 } 6344 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6345 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6346 // stop if: 6347 // - it's disabled 6348 // - parameter change required 6349 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6350 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6351 if ((periodic_enabled == false) || periodic_parameter_change){ 6352 periodic_advertising_stop = true; 6353 advertising_stop_set = advertising_set; 6354 } 6355 } 6356 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6357 } 6358 } 6359 #endif 6360 6361 #endif 6362 6363 6364 // Phase 2: stop everything that should be off during modifications 6365 6366 6367 // 2.1 Outgoing connection 6368 #ifdef ENABLE_LE_CENTRAL 6369 if (connecting_stop){ 6370 hci_send_cmd(&hci_le_create_connection_cancel); 6371 return true; 6372 } 6373 #endif 6374 6375 // 2.2 Scanning 6376 #ifdef ENABLE_LE_CENTRAL 6377 if (scanning_stop){ 6378 hci_stack->le_scanning_active = false; 6379 hci_le_scan_stop(); 6380 return true; 6381 } 6382 6383 // 2.3 Periodic Sync 6384 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6385 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6386 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6387 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6388 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6389 return true; 6390 } 6391 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6392 if (periodic_sync_stop){ 6393 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6394 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6395 return true; 6396 } 6397 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6398 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6399 #endif /* ENABLE_LE_CENTRAL */ 6400 6401 // 2.4 Advertising: legacy, extended, periodic 6402 #ifdef ENABLE_LE_PERIPHERAL 6403 if (advertising_stop){ 6404 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6405 if (hci_le_extended_advertising_supported()) { 6406 uint8_t advertising_stop_handle; 6407 if (advertising_stop_set != NULL){ 6408 advertising_stop_handle = advertising_stop_set->advertising_handle; 6409 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6410 } else { 6411 advertising_stop_handle = 0; 6412 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6413 } 6414 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6415 const uint16_t durations[] = { 0 }; 6416 const uint16_t max_events[] = { 0 }; 6417 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6418 } else 6419 #endif 6420 { 6421 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6422 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6423 } 6424 return true; 6425 } 6426 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6427 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6428 if (periodic_advertising_stop){ 6429 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6430 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6431 return true; 6432 } 6433 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6434 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6435 #endif /* ENABLE_LE_PERIPHERAL */ 6436 6437 6438 // Phase 3: modify 6439 6440 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6441 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6442 // GAP Privacy, notify clients upon upcoming random address change 6443 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6444 // notify might cause hci_run to get executed, check if we still can send 6445 gap_privacy_clients_notify(hci_stack->le_random_address); 6446 if (!hci_can_send_command_packet_now()) { 6447 return true; 6448 } 6449 } 6450 6451 // - wait until privacy update completed 6452 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6453 return false; 6454 } 6455 6456 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6457 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6458 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6459 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6460 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6461 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6462 #endif 6463 return true; 6464 } 6465 6466 #ifdef ENABLE_LE_CENTRAL 6467 if (hci_stack->le_scanning_param_update){ 6468 hci_stack->le_scanning_param_update = false; 6469 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6470 if (hci_le_extended_advertising_supported()){ 6471 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6472 uint8_t scan_types[2]; 6473 uint16_t scan_intervals[2]; 6474 uint16_t scan_windows[2]; 6475 6476 uint8_t i; 6477 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6478 for (i=0;i<num_phys;i++){ 6479 scan_types[i] = hci_stack->le_scan_type; 6480 scan_intervals[i] = hci_stack->le_scan_interval; 6481 scan_windows[i] = hci_stack->le_scan_window; 6482 } 6483 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6484 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6485 } else 6486 #endif 6487 { 6488 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6489 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6490 } 6491 return true; 6492 } 6493 #endif 6494 6495 #ifdef ENABLE_LE_PERIPHERAL 6496 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6497 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6498 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6499 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6500 if (hci_le_extended_advertising_supported()){ 6501 // map advertisment type to advertising event properties 6502 uint16_t adv_event_properties = 0; 6503 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6504 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6505 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6506 } 6507 hci_stack->le_advertising_set_in_current_command = 0; 6508 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6509 0, 6510 adv_event_properties, 6511 hci_stack->le_advertisements_interval_min, 6512 hci_stack->le_advertisements_interval_max, 6513 hci_stack->le_advertisements_channel_map, 6514 hci_stack->le_advertisements_own_addr_type, 6515 hci_stack->le_advertisements_direct_address_type, 6516 hci_stack->le_advertisements_direct_address, 6517 hci_stack->le_advertisements_filter_policy, 6518 0x7f, // tx power: no preference 6519 0x01, // primary adv phy: LE 1M 6520 0, // secondary adv max skip 6521 0x01, // secondary adv phy 6522 0, // adv sid 6523 0 // scan request notification 6524 ); 6525 } else 6526 #endif 6527 { 6528 hci_send_cmd(&hci_le_set_advertising_parameters, 6529 hci_stack->le_advertisements_interval_min, 6530 hci_stack->le_advertisements_interval_max, 6531 hci_stack->le_advertisements_type, 6532 hci_stack->le_advertisements_own_addr_type, 6533 hci_stack->le_advertisements_direct_address_type, 6534 hci_stack->le_advertisements_direct_address, 6535 hci_stack->le_advertisements_channel_map, 6536 hci_stack->le_advertisements_filter_policy); 6537 } 6538 return true; 6539 } 6540 6541 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6542 // assumption: only set if extended advertising is supported 6543 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6544 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6545 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6546 return true; 6547 } 6548 #endif 6549 6550 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6551 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6552 uint8_t adv_data_clean[31]; 6553 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6554 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6555 hci_stack->le_advertisements_data_len); 6556 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6557 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6558 if (hci_le_extended_advertising_supported()){ 6559 hci_stack->le_advertising_set_in_current_command = 0; 6560 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6561 } else 6562 #endif 6563 { 6564 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6565 } 6566 return true; 6567 } 6568 6569 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6570 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6571 uint8_t scan_data_clean[31]; 6572 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6573 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6574 hci_stack->le_scan_response_data_len); 6575 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6576 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6577 if (hci_le_extended_advertising_supported()){ 6578 hci_stack->le_advertising_set_in_current_command = 0; 6579 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6580 } else 6581 #endif 6582 { 6583 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6584 } 6585 return true; 6586 } 6587 6588 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6589 if (hci_le_extended_advertising_supported()) { 6590 btstack_linked_list_iterator_t it; 6591 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6592 while (btstack_linked_list_iterator_has_next(&it)){ 6593 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6594 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6595 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6596 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6597 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6598 return true; 6599 } 6600 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6601 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6602 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6603 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6604 advertising_set->advertising_handle, 6605 advertising_set->extended_params.advertising_event_properties, 6606 advertising_set->extended_params.primary_advertising_interval_min, 6607 advertising_set->extended_params.primary_advertising_interval_max, 6608 advertising_set->extended_params.primary_advertising_channel_map, 6609 advertising_set->extended_params.own_address_type, 6610 advertising_set->extended_params.peer_address_type, 6611 advertising_set->extended_params.peer_address, 6612 advertising_set->extended_params.advertising_filter_policy, 6613 advertising_set->extended_params.advertising_tx_power, 6614 advertising_set->extended_params.primary_advertising_phy, 6615 advertising_set->extended_params.secondary_advertising_max_skip, 6616 advertising_set->extended_params.secondary_advertising_phy, 6617 advertising_set->extended_params.advertising_sid, 6618 advertising_set->extended_params.scan_request_notification_enable 6619 ); 6620 return true; 6621 } 6622 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6623 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6624 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6625 return true; 6626 } 6627 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6628 uint16_t pos = advertising_set->adv_data_pos; 6629 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6630 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6631 if ((operation & 0x02) != 0){ 6632 // last fragment or complete data 6633 operation |= 2; 6634 advertising_set->adv_data_pos = 0; 6635 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6636 } else { 6637 advertising_set->adv_data_pos += data_to_upload; 6638 } 6639 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6640 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6641 return true; 6642 } 6643 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6644 uint16_t pos = advertising_set->scan_data_pos; 6645 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6646 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6647 if ((operation & 0x02) != 0){ 6648 advertising_set->scan_data_pos = 0; 6649 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6650 } else { 6651 advertising_set->scan_data_pos += data_to_upload; 6652 } 6653 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6654 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6655 return true; 6656 } 6657 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6658 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6659 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6660 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6661 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6662 advertising_set->advertising_handle, 6663 advertising_set->periodic_params.periodic_advertising_interval_min, 6664 advertising_set->periodic_params.periodic_advertising_interval_max, 6665 advertising_set->periodic_params.periodic_advertising_properties); 6666 return true; 6667 } 6668 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6669 uint16_t pos = advertising_set->periodic_data_pos; 6670 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6671 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6672 if ((operation & 0x02) != 0){ 6673 // last fragment or complete data 6674 operation |= 2; 6675 advertising_set->periodic_data_pos = 0; 6676 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6677 } else { 6678 advertising_set->periodic_data_pos += data_to_upload; 6679 } 6680 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6681 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6682 return true; 6683 } 6684 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6685 } 6686 } 6687 #endif 6688 6689 #endif 6690 6691 #ifdef ENABLE_LE_CENTRAL 6692 // if connect with whitelist was active and is not cancelled yet, wait until next time 6693 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6694 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6695 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6696 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6697 #endif 6698 #endif 6699 6700 // LE Whitelist Management 6701 if (whitelist_modification_pending){ 6702 bool done = hci_whitelist_modification_process(); 6703 if (done) return true; 6704 } 6705 6706 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6707 // LE Resolving List Management 6708 if (resolving_list_modification_pending) { 6709 uint16_t i; 6710 uint8_t null_16[16]; 6711 uint8_t local_irk_flipped[16]; 6712 const uint8_t *local_irk; 6713 switch (hci_stack->le_resolving_list_state) { 6714 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6715 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6716 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6717 return true; 6718 case LE_RESOLVING_LIST_READ_SIZE: 6719 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6720 hci_send_cmd(&hci_le_read_resolving_list_size); 6721 return true; 6722 case LE_RESOLVING_LIST_SEND_CLEAR: 6723 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6724 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6725 sizeof(hci_stack->le_resolving_list_add_entries)); 6726 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6727 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6728 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6729 sizeof(hci_stack->le_resolving_list_remove_entries)); 6730 hci_send_cmd(&hci_le_clear_resolving_list); 6731 return true; 6732 case LE_RESOLVING_LIST_SET_IRK: 6733 // set IRK used by RPA for undirected advertising 6734 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6735 local_irk = gap_get_persistent_irk(); 6736 reverse_128(local_irk, local_irk_flipped); 6737 memset(null_16, 0, sizeof(null_16)); 6738 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6739 null_16, local_irk_flipped); 6740 return true; 6741 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6742 // first remove old entries 6743 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6744 uint8_t offset = i >> 3; 6745 uint8_t mask = 1 << (i & 7); 6746 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6747 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6748 bd_addr_t peer_identity_addreses; 6749 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6750 sm_key_t peer_irk; 6751 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6752 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6753 6754 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6755 // trigger whitelist entry 'update' (work around for controller bug) 6756 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6757 while (btstack_linked_list_iterator_has_next(&lit)) { 6758 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6759 if (entry->address_type != peer_identity_addr_type) continue; 6760 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6761 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6762 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6763 } 6764 #endif 6765 6766 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6767 peer_identity_addreses); 6768 return true; 6769 } 6770 6771 // then add new entries 6772 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6773 uint8_t offset = i >> 3; 6774 uint8_t mask = 1 << (i & 7); 6775 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6776 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6777 bd_addr_t peer_identity_addreses; 6778 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6779 sm_key_t peer_irk; 6780 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6781 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6782 if (btstack_is_null(peer_irk, 16)) continue; 6783 local_irk = gap_get_persistent_irk(); 6784 // command uses format specifier 'P' that stores 16-byte value without flip 6785 uint8_t peer_irk_flipped[16]; 6786 reverse_128(local_irk, local_irk_flipped); 6787 reverse_128(peer_irk, peer_irk_flipped); 6788 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6789 peer_irk_flipped, local_irk_flipped); 6790 return true; 6791 } 6792 6793 // finally, set privacy mode 6794 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6795 uint8_t offset = i >> 3; 6796 uint8_t mask = 1 << (i & 7); 6797 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6798 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6799 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6800 // Network Privacy Mode is default 6801 continue; 6802 } 6803 bd_addr_t peer_identity_address; 6804 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6805 sm_key_t peer_irk; 6806 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6807 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6808 if (btstack_is_null(peer_irk, 16)) continue; 6809 // command uses format specifier 'P' that stores 16-byte value without flip 6810 uint8_t peer_irk_flipped[16]; 6811 reverse_128(peer_irk, peer_irk_flipped); 6812 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6813 return true; 6814 } 6815 break; 6816 6817 default: 6818 break; 6819 } 6820 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6821 } 6822 #endif 6823 6824 #ifdef ENABLE_LE_CENTRAL 6825 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6826 // LE Whitelist Management 6827 if (periodic_list_modification_pending){ 6828 // add/remove entries 6829 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6830 while (btstack_linked_list_iterator_has_next(&lit)){ 6831 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6832 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6833 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6834 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6835 return true; 6836 } 6837 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6838 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6839 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6840 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6841 return true; 6842 } 6843 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6844 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6845 btstack_memory_periodic_advertiser_list_entry_free(entry); 6846 } 6847 } 6848 } 6849 #endif 6850 #endif 6851 6852 #ifdef ENABLE_LE_CENTRAL 6853 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6854 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6855 if (hci_stack->le_past_set_default_params){ 6856 hci_stack->le_past_set_default_params = false; 6857 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6858 hci_stack->le_past_mode, 6859 hci_stack->le_past_skip, 6860 hci_stack->le_past_sync_timeout, 6861 hci_stack->le_past_cte_type); 6862 return true; 6863 } 6864 #endif 6865 #endif 6866 #endif 6867 6868 // post-pone all actions until stack is fully working 6869 if (hci_stack->state != HCI_STATE_WORKING) return false; 6870 6871 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6872 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6873 6874 // Phase 4: restore state 6875 6876 #ifdef ENABLE_LE_CENTRAL 6877 // re-start scanning 6878 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6879 hci_stack->le_scanning_active = true; 6880 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6881 if (hci_le_extended_advertising_supported()){ 6882 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6883 } else 6884 #endif 6885 { 6886 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6887 } 6888 return true; 6889 } 6890 #endif 6891 6892 #ifdef ENABLE_LE_CENTRAL 6893 // re-start connecting 6894 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6895 bd_addr_t null_addr; 6896 memset(null_addr, 0, 6); 6897 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6898 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6899 hci_send_le_create_connection(1, 0, null_addr); 6900 return true; 6901 } 6902 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6903 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6904 switch(hci_stack->le_periodic_sync_request){ 6905 case LE_CONNECTING_DIRECT: 6906 case LE_CONNECTING_WHITELIST: 6907 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6908 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6909 hci_stack->le_periodic_sync_options, 6910 hci_stack->le_periodic_sync_advertising_sid, 6911 hci_stack->le_periodic_sync_advertiser_address_type, 6912 hci_stack->le_periodic_sync_advertiser_address, 6913 hci_stack->le_periodic_sync_skip, 6914 hci_stack->le_periodic_sync_timeout, 6915 hci_stack->le_periodic_sync_cte_type); 6916 return true; 6917 default: 6918 break; 6919 } 6920 } 6921 #endif 6922 #endif 6923 6924 #ifdef ENABLE_LE_PERIPHERAL 6925 // re-start advertising 6926 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6927 // check if advertisements should be enabled given 6928 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6929 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6930 6931 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6932 if (hci_le_extended_advertising_supported()){ 6933 const uint8_t advertising_handles[] = { 0 }; 6934 const uint16_t durations[] = { 0 }; 6935 const uint16_t max_events[] = { 0 }; 6936 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6937 } else 6938 #endif 6939 { 6940 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6941 } 6942 return true; 6943 } 6944 6945 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6946 if (hci_le_extended_advertising_supported()) { 6947 btstack_linked_list_iterator_t it; 6948 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6949 while (btstack_linked_list_iterator_has_next(&it)) { 6950 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6951 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6952 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6953 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6954 const uint16_t durations[] = { advertising_set->enable_timeout }; 6955 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6956 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6957 return true; 6958 } 6959 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6960 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6961 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6962 uint8_t enable = 1; 6963 if (advertising_set->periodic_include_adi){ 6964 enable |= 2; 6965 } 6966 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6967 return true; 6968 } 6969 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6970 } 6971 } 6972 #endif 6973 #endif 6974 6975 return false; 6976 } 6977 6978 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6979 static bool hci_run_iso_tasks(void){ 6980 btstack_linked_list_iterator_t it; 6981 6982 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6983 return false; 6984 } 6985 6986 // BIG 6987 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6988 while (btstack_linked_list_iterator_has_next(&it)){ 6989 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6990 switch (big->state){ 6991 case LE_AUDIO_BIG_STATE_CREATE: 6992 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6993 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6994 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6995 hci_send_cmd(&hci_le_create_big, 6996 big->params->big_handle, 6997 big->params->advertising_handle, 6998 big->params->num_bis, 6999 big->params->sdu_interval_us, 7000 big->params->max_sdu, 7001 big->params->max_transport_latency_ms, 7002 big->params->rtn, 7003 big->params->phy, 7004 big->params->packing, 7005 big->params->framing, 7006 big->params->encryption, 7007 big->params->broadcast_code); 7008 return true; 7009 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7010 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7011 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); 7012 return true; 7013 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7014 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7015 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 7016 return true; 7017 case LE_AUDIO_BIG_STATE_TERMINATE: 7018 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7019 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7020 return true; 7021 default: 7022 break; 7023 } 7024 } 7025 7026 // BIG Sync 7027 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 7028 while (btstack_linked_list_iterator_has_next(&it)){ 7029 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 7030 switch (big_sync->state){ 7031 case LE_AUDIO_BIG_STATE_CREATE: 7032 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 7033 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7034 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7035 hci_send_cmd(&hci_le_big_create_sync, 7036 big_sync->params->big_handle, 7037 big_sync->params->sync_handle, 7038 big_sync->params->encryption, 7039 big_sync->params->broadcast_code, 7040 big_sync->params->mse, 7041 big_sync->params->big_sync_timeout_10ms, 7042 big_sync->params->num_bis, 7043 big_sync->params->bis_indices); 7044 return true; 7045 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7046 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7047 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); 7048 return true; 7049 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7050 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7051 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7052 return true; 7053 case LE_AUDIO_BIG_STATE_TERMINATE: 7054 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7055 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7056 return true; 7057 default: 7058 break; 7059 } 7060 } 7061 7062 // CIG 7063 bool cig_active; 7064 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7065 while (btstack_linked_list_iterator_has_next(&it)) { 7066 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7067 uint8_t i; 7068 // Set CIG Parameters 7069 uint8_t cis_id[MAX_NR_CIS]; 7070 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7071 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7072 uint8_t phy_c_to_p[MAX_NR_CIS]; 7073 uint8_t phy_p_to_c[MAX_NR_CIS]; 7074 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7075 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7076 switch (cig->state) { 7077 case LE_AUDIO_CIG_STATE_CREATE: 7078 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7079 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7080 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7081 le_audio_cig_params_t * params = cig->params; 7082 for (i = 0; i < params->num_cis; i++) { 7083 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7084 cis_id[i] = cis_params->cis_id; 7085 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7086 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7087 phy_c_to_p[i] = cis_params->phy_c_to_p; 7088 phy_p_to_c[i] = cis_params->phy_p_to_c; 7089 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7090 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7091 } 7092 hci_send_cmd(&hci_le_set_cig_parameters, 7093 cig->cig_id, 7094 params->sdu_interval_c_to_p, 7095 params->sdu_interval_p_to_c, 7096 params->worst_case_sca, 7097 params->packing, 7098 params->framing, 7099 params->max_transport_latency_c_to_p, 7100 params->max_transport_latency_p_to_c, 7101 params->num_cis, 7102 cis_id, 7103 max_sdu_c_to_p, 7104 max_sdu_p_to_c, 7105 phy_c_to_p, 7106 phy_p_to_c, 7107 rtn_c_to_p, 7108 rtn_p_to_c 7109 ); 7110 return true; 7111 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7112 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7113 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7114 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7115 for (i=0;i<cig->num_cis;i++){ 7116 cig->cis_setup_active[i] = true; 7117 } 7118 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7119 return true; 7120 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7121 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7122 // find next path to setup 7123 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7124 if (cig->cis_established[cis_index] == false) { 7125 continue; 7126 } 7127 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7128 bool setup = true; 7129 if (cis_direction == 0){ 7130 // 0 - input - host to controller 7131 // we are central => central to peripheral 7132 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7133 } else { 7134 // 1 - output - controller to host 7135 // we are central => peripheral to central 7136 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7137 } 7138 if (setup){ 7139 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7140 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7141 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7142 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); 7143 return true; 7144 } 7145 cig->state_vars.next_cis++; 7146 } 7147 // emit done 7148 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7149 break; 7150 case LE_AUDIO_CIG_STATE_REMOVE: 7151 // check if CIG Active 7152 cig_active = false; 7153 for (i = 0; i < cig->num_cis; i++) { 7154 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7155 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7156 if (stream != NULL){ 7157 cig_active = true; 7158 break; 7159 } 7160 } 7161 } 7162 if (cig_active == false){ 7163 btstack_linked_list_iterator_remove(&it); 7164 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7165 return true; 7166 } 7167 default: 7168 break; 7169 } 7170 } 7171 7172 // CIS Accept/Reject/Setup ISO Path/Close 7173 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7174 while (btstack_linked_list_iterator_has_next(&it)) { 7175 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7176 hci_con_handle_t con_handle; 7177 switch (iso_stream->state){ 7178 case HCI_ISO_STREAM_W2_ACCEPT: 7179 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7180 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7181 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7182 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7183 return true; 7184 case HCI_ISO_STREAM_W2_REJECT: 7185 con_handle = iso_stream->cis_handle; 7186 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7187 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7188 hci_iso_stream_finalize(iso_stream); 7189 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7190 return true; 7191 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7192 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7193 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7194 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7195 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); 7196 break; 7197 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7198 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7199 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7200 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7201 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); 7202 break; 7203 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7204 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7205 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7206 break; 7207 default: 7208 break; 7209 } 7210 } 7211 7212 return false; 7213 } 7214 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7215 #endif 7216 7217 static bool hci_run_general_pending_commands(void){ 7218 btstack_linked_item_t * it; 7219 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7220 hci_connection_t * connection = (hci_connection_t *) it; 7221 7222 switch(connection->state){ 7223 case SEND_CREATE_CONNECTION: 7224 switch(connection->address_type){ 7225 #ifdef ENABLE_CLASSIC 7226 case BD_ADDR_TYPE_ACL: 7227 log_info("sending hci_create_connection"); 7228 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7229 break; 7230 #endif 7231 default: 7232 #ifdef ENABLE_BLE 7233 #ifdef ENABLE_LE_CENTRAL 7234 log_info("sending hci_le_create_connection"); 7235 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7236 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7237 hci_send_le_create_connection(0, connection->address_type, connection->address); 7238 connection->state = SENT_CREATE_CONNECTION; 7239 #endif 7240 #endif 7241 break; 7242 } 7243 return true; 7244 7245 #ifdef ENABLE_CLASSIC 7246 case RECEIVED_CONNECTION_REQUEST: 7247 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7248 log_info("sending hci_accept_connection_request"); 7249 connection->state = ACCEPTED_CONNECTION_REQUEST; 7250 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7251 return true; 7252 } 7253 break; 7254 #endif 7255 case SEND_DISCONNECT: 7256 connection->state = SENT_DISCONNECT; 7257 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7258 return true; 7259 7260 default: 7261 break; 7262 } 7263 7264 // no further commands if connection is about to get shut down 7265 if (connection->state == SENT_DISCONNECT) continue; 7266 7267 #ifdef ENABLE_CLASSIC 7268 7269 // Handling link key request requires remote supported features 7270 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7271 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7272 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7273 7274 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7275 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7276 if (have_link_key && security_level_sufficient){ 7277 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7278 } else { 7279 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7280 } 7281 return true; 7282 } 7283 7284 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7285 log_info("denying to pin request"); 7286 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7287 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7288 return true; 7289 } 7290 7291 // security assessment requires remote features 7292 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7293 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7294 hci_ssp_assess_security_on_io_cap_request(connection); 7295 // 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 7296 } 7297 7298 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7299 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7300 // set authentication requirements: 7301 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7302 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7303 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7304 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7305 authreq |= 1; 7306 } 7307 bool bonding = hci_stack->bondable; 7308 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7309 // if we have received IO Cap Response, we're in responder role 7310 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7311 if (bonding && !remote_bonding){ 7312 log_info("Remote not bonding, dropping local flag"); 7313 bonding = false; 7314 } 7315 } 7316 if (bonding){ 7317 if (connection->bonding_flags & BONDING_DEDICATED){ 7318 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7319 } else { 7320 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7321 } 7322 } 7323 uint8_t have_oob_data = 0; 7324 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7325 if (connection->classic_oob_c_192 != NULL){ 7326 have_oob_data |= 1; 7327 } 7328 if (connection->classic_oob_c_256 != NULL){ 7329 have_oob_data |= 2; 7330 } 7331 #endif 7332 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7333 return true; 7334 } 7335 7336 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7337 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7338 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7339 return true; 7340 } 7341 7342 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7343 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7344 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7345 const uint8_t zero[16] = { 0 }; 7346 const uint8_t * r_192 = zero; 7347 const uint8_t * c_192 = zero; 7348 const uint8_t * r_256 = zero; 7349 const uint8_t * c_256 = zero; 7350 // verify P-256 OOB 7351 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7352 c_256 = connection->classic_oob_c_256; 7353 if (connection->classic_oob_r_256 != NULL) { 7354 r_256 = connection->classic_oob_r_256; 7355 } 7356 } 7357 // verify P-192 OOB 7358 if ((connection->classic_oob_c_192 != NULL)) { 7359 c_192 = connection->classic_oob_c_192; 7360 if (connection->classic_oob_r_192 != NULL) { 7361 r_192 = connection->classic_oob_r_192; 7362 } 7363 } 7364 7365 // assess security 7366 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7367 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7368 if (need_level_4 && !can_reach_level_4){ 7369 log_info("Level 4 required, but not possible -> abort"); 7370 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7371 // send oob negative reply 7372 c_256 = NULL; 7373 c_192 = NULL; 7374 } 7375 7376 // Reply 7377 if (c_256 != zero) { 7378 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7379 } else if (c_192 != zero){ 7380 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7381 } else { 7382 hci_stack->classic_oob_con_handle = connection->con_handle; 7383 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7384 } 7385 return true; 7386 } 7387 #endif 7388 7389 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7390 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7391 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7392 return true; 7393 } 7394 7395 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7396 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7397 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7398 return true; 7399 } 7400 7401 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7402 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7403 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7404 return true; 7405 } 7406 7407 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7408 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7409 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7410 connection->state = SENT_DISCONNECT; 7411 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7412 return true; 7413 } 7414 7415 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7416 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7417 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7418 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7419 return true; 7420 } 7421 7422 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7423 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7424 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7425 return true; 7426 } 7427 7428 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7429 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7430 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7431 return true; 7432 } 7433 7434 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7435 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7436 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7437 return true; 7438 } 7439 7440 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7441 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7442 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7443 return true; 7444 } 7445 7446 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7447 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7448 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7449 return true; 7450 } 7451 #endif 7452 7453 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7454 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7455 #ifdef ENABLE_CLASSIC 7456 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7457 #endif 7458 if (connection->state != SENT_DISCONNECT){ 7459 connection->state = SENT_DISCONNECT; 7460 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7461 return true; 7462 } 7463 } 7464 7465 #ifdef ENABLE_CLASSIC 7466 uint16_t sniff_min_interval; 7467 switch (connection->sniff_min_interval){ 7468 case 0: 7469 break; 7470 case 0xffff: 7471 connection->sniff_min_interval = 0; 7472 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7473 return true; 7474 default: 7475 sniff_min_interval = connection->sniff_min_interval; 7476 connection->sniff_min_interval = 0; 7477 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7478 return true; 7479 } 7480 7481 if (connection->sniff_subrating_max_latency != 0xffff){ 7482 uint16_t max_latency = connection->sniff_subrating_max_latency; 7483 connection->sniff_subrating_max_latency = 0; 7484 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7485 return true; 7486 } 7487 7488 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7489 uint8_t service_type = (uint8_t) connection->qos_service_type; 7490 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7491 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); 7492 return true; 7493 } 7494 7495 if (connection->request_role != HCI_ROLE_INVALID){ 7496 hci_role_t role = connection->request_role; 7497 connection->request_role = HCI_ROLE_INVALID; 7498 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7499 return true; 7500 } 7501 #endif 7502 7503 if (connection->gap_connection_tasks != 0){ 7504 #ifdef ENABLE_CLASSIC 7505 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7506 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7507 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7508 return true; 7509 } 7510 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7511 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7512 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7513 return true; 7514 } 7515 #endif 7516 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7517 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7518 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7519 return true; 7520 } 7521 #ifdef ENABLE_BLE 7522 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7523 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7524 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7525 return true; 7526 } 7527 #endif 7528 } 7529 7530 #ifdef ENABLE_BLE 7531 switch (connection->le_con_parameter_update_state){ 7532 // response to L2CAP CON PARAMETER UPDATE REQUEST 7533 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7534 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7535 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7536 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7537 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7538 return true; 7539 case CON_PARAMETER_UPDATE_REPLY: 7540 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7541 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7542 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7543 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7544 return true; 7545 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7546 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7547 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7548 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7549 return true; 7550 default: 7551 break; 7552 } 7553 if (connection->le_phy_update_all_phys != 0xffu){ 7554 uint8_t all_phys = connection->le_phy_update_all_phys; 7555 connection->le_phy_update_all_phys = 0xff; 7556 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); 7557 return true; 7558 } 7559 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7560 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7561 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7562 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7563 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7564 return true; 7565 } 7566 if (connection->le_past_advertising_handle != 0xff){ 7567 uint8_t advertising_handle = connection->le_past_advertising_handle; 7568 connection->le_past_advertising_handle = 0xff; 7569 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7570 return true; 7571 } 7572 #endif 7573 #endif 7574 } 7575 return false; 7576 } 7577 7578 static void hci_run(void){ 7579 7580 // stack state sub statemachines 7581 switch (hci_stack->state) { 7582 case HCI_STATE_INITIALIZING: 7583 hci_initializing_run(); 7584 break; 7585 case HCI_STATE_HALTING: 7586 hci_halting_run(); 7587 break; 7588 case HCI_STATE_FALLING_ASLEEP: 7589 hci_falling_asleep_run(); 7590 break; 7591 default: 7592 break; 7593 } 7594 7595 // allow to run after initialization to working transition 7596 if (hci_stack->state != HCI_STATE_WORKING){ 7597 return; 7598 } 7599 7600 bool done; 7601 7602 // send continuation fragments first, as they block the prepared packet buffer 7603 done = hci_run_acl_fragments(); 7604 if (done) return; 7605 7606 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7607 done = hci_run_iso_fragments(); 7608 if (done) return; 7609 #endif 7610 7611 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7612 // send host num completed packets next as they don't require num_cmd_packets > 0 7613 if (!hci_can_send_comand_packet_transport()) return; 7614 if (hci_stack->host_completed_packets){ 7615 hci_host_num_completed_packets(); 7616 return; 7617 } 7618 #endif 7619 7620 if (!hci_can_send_command_packet_now()) return; 7621 7622 // global/non-connection oriented commands 7623 7624 7625 #ifdef ENABLE_CLASSIC 7626 // general gap classic 7627 done = hci_run_general_gap_classic(); 7628 if (done) return; 7629 #endif 7630 7631 #ifdef ENABLE_BLE 7632 // general gap le 7633 done = hci_run_general_gap_le(); 7634 if (done) return; 7635 7636 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7637 // ISO related tasks, e.g. BIG create/terminate/sync 7638 done = hci_run_iso_tasks(); 7639 if (done) return; 7640 #endif 7641 #endif 7642 7643 // send pending HCI commands 7644 hci_run_general_pending_commands(); 7645 } 7646 7647 #ifdef ENABLE_CLASSIC 7648 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7649 // bits 6-9 are 'don't use' 7650 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7651 7652 // restrict packet types to local and remote supported 7653 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7654 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7655 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7656 } 7657 #endif 7658 7659 // funnel for sending cmd packet using single outgoing buffer 7660 static uint8_t hci_send_prepared_cmd_packet(void) { 7661 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7662 // cache opcode 7663 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7664 // get size 7665 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7666 // send packet 7667 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7668 // release packet buffer on error or for synchronous transport implementations 7669 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7670 hci_release_packet_buffer(); 7671 } 7672 return status; 7673 } 7674 7675 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7676 // house-keeping 7677 7678 #ifdef ENABLE_CLASSIC 7679 bd_addr_t addr; 7680 hci_connection_t * conn; 7681 #endif 7682 #ifdef ENABLE_LE_CENTRAL 7683 uint8_t initiator_filter_policy; 7684 #endif 7685 7686 uint16_t opcode = little_endian_read_16(packet, 0); 7687 switch (opcode) { 7688 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7689 hci_stack->loopback_mode = packet[3]; 7690 break; 7691 7692 #ifdef ENABLE_CLASSIC 7693 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7694 reverse_bd_addr(&packet[3], addr); 7695 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7696 7697 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7698 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7699 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7700 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7701 } 7702 7703 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7704 if (!conn) { 7705 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7706 if (!conn) { 7707 // notify client that alloc failed 7708 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7709 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7710 } 7711 conn->state = SEND_CREATE_CONNECTION; 7712 } 7713 7714 log_info("conn state %u", conn->state); 7715 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7716 switch (conn->state) { 7717 // if connection active exists 7718 case OPEN: 7719 // and OPEN, emit connection complete command 7720 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7721 // packet not sent to controller 7722 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7723 case RECEIVED_DISCONNECTION_COMPLETE: 7724 // create connection triggered in disconnect complete event, let's do it now 7725 break; 7726 case SEND_CREATE_CONNECTION: 7727 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7728 if (hci_classic_operation_active()){ 7729 return ERROR_CODE_SUCCESS; 7730 } 7731 #endif 7732 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7733 break; 7734 default: 7735 // otherwise, just ignore as it is already in the open process 7736 // packet not sent to controller 7737 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7738 } 7739 conn->state = SENT_CREATE_CONNECTION; 7740 7741 // track outgoing connection 7742 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7743 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7744 break; 7745 7746 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7747 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7748 if (conn == NULL) { 7749 // neither SCO nor ACL connection for con handle 7750 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7751 } else { 7752 uint16_t remote_supported_sco_packets; 7753 switch (conn->address_type){ 7754 case BD_ADDR_TYPE_ACL: 7755 // assert SCO connection does not exit 7756 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7757 return ERROR_CODE_COMMAND_DISALLOWED; 7758 } 7759 // cache remote sco packet types 7760 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7761 7762 // allocate connection struct 7763 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7764 HCI_ROLE_MASTER); 7765 if (!conn) { 7766 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7767 } 7768 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7769 break; 7770 case BD_ADDR_TYPE_SCO: 7771 // update of existing SCO connection 7772 break; 7773 default: 7774 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7775 } 7776 } 7777 7778 // conn refers to hci connection of type sco now 7779 7780 conn->state = SENT_CREATE_CONNECTION; 7781 7782 // track outgoing connection to handle command status with error 7783 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7784 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7785 7786 // setup_synchronous_connection? Voice setting at offset 22 7787 // TODO: compare to current setting if sco connection already active 7788 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7789 7790 // derive sco payload length from packet types 7791 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7792 break; 7793 7794 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7795 // get SCO connection 7796 reverse_bd_addr(&packet[3], addr); 7797 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7798 if (conn == NULL){ 7799 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7800 } 7801 7802 conn->state = ACCEPTED_CONNECTION_REQUEST; 7803 7804 // track outgoing connection to handle command status with error 7805 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7806 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7807 7808 // accept_synchronous_connection? Voice setting at offset 18 7809 // TODO: compare to current setting if sco connection already active 7810 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7811 7812 // derive sco payload length from packet types 7813 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7814 break; 7815 #endif 7816 7817 #ifdef ENABLE_BLE 7818 #ifdef ENABLE_LE_CENTRAL 7819 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7820 // white list used? 7821 initiator_filter_policy = packet[7]; 7822 switch (initiator_filter_policy) { 7823 case 0: 7824 // whitelist not used 7825 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7826 break; 7827 case 1: 7828 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7829 break; 7830 default: 7831 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7832 break; 7833 } 7834 // track outgoing connection 7835 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7836 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7837 break; 7838 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7839 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7840 // white list used? 7841 initiator_filter_policy = packet[3]; 7842 switch (initiator_filter_policy) { 7843 case 0: 7844 // whitelist not used 7845 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7846 break; 7847 case 1: 7848 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7849 break; 7850 default: 7851 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7852 break; 7853 } 7854 // track outgoing connection 7855 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7856 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7857 break; 7858 #endif 7859 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7860 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7861 break; 7862 #endif 7863 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7864 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7865 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7866 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7867 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7868 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7869 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7870 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7871 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7872 case HCI_OPCODE_HCI_LE_READ_PHY: 7873 case HCI_OPCODE_HCI_LE_SET_PHY: 7874 // conection handle is first command parameter 7875 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7876 break; 7877 #endif 7878 #endif /* ENABLE_BLE */ 7879 default: 7880 break; 7881 } 7882 7883 hci_stack->num_cmd_packets--; 7884 7885 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7886 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7887 uint8_t status; 7888 if (err == 0){ 7889 status = ERROR_CODE_SUCCESS; 7890 } else { 7891 status = ERROR_CODE_HARDWARE_FAILURE; 7892 } 7893 return status; 7894 } 7895 7896 // disconnect because of security block 7897 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7898 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7899 if (!connection) return; 7900 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7901 } 7902 7903 7904 // Configure Secure Simple Pairing 7905 7906 #ifdef ENABLE_CLASSIC 7907 7908 // enable will enable SSP during init 7909 void gap_ssp_set_enable(int enable){ 7910 hci_stack->ssp_enable = enable; 7911 } 7912 7913 static int hci_local_ssp_activated(void){ 7914 return gap_ssp_supported() && hci_stack->ssp_enable; 7915 } 7916 7917 // if set, BTstack will respond to io capability request using authentication requirement 7918 void gap_ssp_set_io_capability(int io_capability){ 7919 hci_stack->ssp_io_capability = io_capability; 7920 } 7921 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7922 hci_stack->ssp_authentication_requirement = authentication_requirement; 7923 } 7924 7925 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7926 void gap_ssp_set_auto_accept(int auto_accept){ 7927 hci_stack->ssp_auto_accept = auto_accept; 7928 } 7929 7930 void gap_secure_connections_enable(bool enable){ 7931 hci_stack->secure_connections_enable = enable; 7932 } 7933 bool gap_secure_connections_active(void){ 7934 return hci_stack->secure_connections_active; 7935 } 7936 7937 #endif 7938 7939 // va_list part of hci_send_cmd 7940 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7941 if (!hci_can_send_command_packet_now()){ 7942 log_error("hci_send_cmd called but cannot send packet now"); 7943 return ERROR_CODE_COMMAND_DISALLOWED; 7944 } 7945 7946 hci_reserve_packet_buffer(); 7947 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7948 return hci_send_prepared_cmd_packet(); 7949 } 7950 7951 /** 7952 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7953 */ 7954 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7955 va_list argptr; 7956 va_start(argptr, cmd); 7957 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7958 va_end(argptr); 7959 return status; 7960 } 7961 7962 // Forward HCI events and create non-HCI events 7963 7964 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7965 // dump packet 7966 if (dump) { 7967 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7968 } 7969 7970 // dispatch to all event handlers 7971 btstack_linked_list_iterator_t it; 7972 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7973 while (btstack_linked_list_iterator_has_next(&it)){ 7974 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7975 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7976 } 7977 } 7978 7979 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump){ 7980 #ifndef ENABLE_LOG_BTSTACK_EVENTS 7981 dump = 0; 7982 #endif 7983 hci_emit_event(event, size, dump); 7984 } 7985 7986 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7987 if (!hci_stack->acl_packet_handler) return; 7988 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7989 } 7990 7991 #ifdef ENABLE_CLASSIC 7992 static void hci_notify_if_sco_can_send_now(void){ 7993 // notify SCO sender if waiting 7994 if (!hci_stack->sco_waiting_for_can_send_now) return; 7995 if (hci_can_send_sco_packet_now()){ 7996 hci_stack->sco_waiting_for_can_send_now = 0; 7997 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7998 hci_dump_btstack_event(event, sizeof(event)); 7999 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 8000 } 8001 } 8002 8003 // parsing end emitting has been merged to reduce code size 8004 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 8005 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 8006 8007 uint8_t * eir_data; 8008 ad_context_t context; 8009 const uint8_t * name; 8010 uint8_t name_len; 8011 8012 if (size < 3) return; 8013 8014 int event_type = hci_event_packet_get_type(packet); 8015 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 8016 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 8017 8018 switch (event_type){ 8019 case HCI_EVENT_INQUIRY_RESULT: 8020 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8021 if (size != (3 + (num_responses * 14))) return; 8022 break; 8023 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8024 if (size != 257) return; 8025 if (num_responses != 1) return; 8026 break; 8027 default: 8028 return; 8029 } 8030 8031 // event[1] is set at the end 8032 int i; 8033 for (i=0; i<num_responses;i++){ 8034 memset(event, 0, sizeof(event)); 8035 event[0] = GAP_EVENT_INQUIRY_RESULT; 8036 uint8_t event_size = 27; // if name is not set by EIR 8037 8038 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 8039 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 8040 (void)memcpy(&event[9], 8041 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 8042 3); // class of device 8043 (void)memcpy(&event[12], 8044 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 8045 2); // clock offset 8046 8047 switch (event_type){ 8048 case HCI_EVENT_INQUIRY_RESULT: 8049 // 14,15,16,17 = 0, size 18 8050 break; 8051 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8052 event[14] = 1; 8053 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8054 // 16,17 = 0, size 18 8055 break; 8056 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8057 event[14] = 1; 8058 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8059 // EIR packets only contain a single inquiry response 8060 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8061 name = NULL; 8062 // Iterate over EIR data 8063 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8064 uint8_t data_type = ad_iterator_get_data_type(&context); 8065 uint8_t data_size = ad_iterator_get_data_len(&context); 8066 const uint8_t * data = ad_iterator_get_data(&context); 8067 // Prefer Complete Local Name over Shortened Local Name 8068 switch (data_type){ 8069 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8070 if (name) continue; 8071 /* fall through */ 8072 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8073 name = data; 8074 name_len = data_size; 8075 break; 8076 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8077 if (data_size != 8) break; 8078 event[16] = 1; 8079 memcpy(&event[17], data, 8); 8080 break; 8081 default: 8082 break; 8083 } 8084 } 8085 if (name){ 8086 event[25] = 1; 8087 // truncate name if needed 8088 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8089 event[26] = len; 8090 (void)memcpy(&event[27], name, len); 8091 event_size += len; 8092 } 8093 break; 8094 default: 8095 return; 8096 } 8097 event[1] = event_size - 2; 8098 hci_emit_btstack_event(event, event_size, 1); 8099 } 8100 } 8101 #endif 8102 8103 void hci_emit_state(void){ 8104 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8105 uint8_t event[3]; 8106 event[0] = BTSTACK_EVENT_STATE; 8107 event[1] = sizeof(event) - 2u; 8108 event[2] = hci_stack->state; 8109 hci_emit_btstack_event(event, sizeof(event), 1); 8110 } 8111 8112 #ifdef ENABLE_CLASSIC 8113 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8114 uint8_t event[13]; 8115 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8116 event[1] = sizeof(event) - 2; 8117 event[2] = status; 8118 little_endian_store_16(event, 3, con_handle); 8119 reverse_bd_addr(address, &event[5]); 8120 event[11] = 1; // ACL connection 8121 event[12] = 0; // encryption disabled 8122 hci_emit_btstack_event(event, sizeof(event), 1); 8123 } 8124 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8125 if (disable_l2cap_timeouts) return; 8126 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8127 uint8_t event[4]; 8128 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8129 event[1] = sizeof(event) - 2; 8130 little_endian_store_16(event, 2, conn->con_handle); 8131 hci_emit_btstack_event(event, sizeof(event), 1); 8132 } 8133 #endif 8134 8135 #ifdef ENABLE_BLE 8136 #ifdef ENABLE_LE_CENTRAL 8137 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){ 8138 uint8_t hci_event[21]; 8139 hci_event[0] = HCI_EVENT_LE_META; 8140 hci_event[1] = sizeof(hci_event) - 2u; 8141 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8142 hci_event[3] = status; 8143 little_endian_store_16(hci_event, 4, con_handle); 8144 hci_event[6] = 0; // TODO: role 8145 hci_event[7] = address_type; 8146 reverse_bd_addr(address, &hci_event[8]); 8147 little_endian_store_16(hci_event, 14, 0); // interval 8148 little_endian_store_16(hci_event, 16, 0); // latency 8149 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8150 hci_event[20] = 0; // master clock accuracy 8151 hci_emit_btstack_event(hci_event, sizeof(hci_event), 1); 8152 // emit GAP event, too 8153 uint8_t gap_event[36]; 8154 hci_create_gap_connection_complete_event(hci_event, gap_event); 8155 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 8156 } 8157 #endif 8158 #endif 8159 8160 static void hci_emit_transport_packet_sent(void){ 8161 // notify upper stack that it might be possible to send again 8162 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8163 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 8164 } 8165 8166 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8167 uint8_t event[6]; 8168 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8169 event[1] = sizeof(event) - 2u; 8170 event[2] = 0; // status = OK 8171 little_endian_store_16(event, 3, con_handle); 8172 event[5] = reason; 8173 hci_emit_btstack_event(event, sizeof(event), 1); 8174 } 8175 8176 static void hci_emit_nr_connections_changed(void){ 8177 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8178 uint8_t event[3]; 8179 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8180 event[1] = sizeof(event) - 2u; 8181 event[2] = nr_hci_connections(); 8182 hci_emit_btstack_event(event, sizeof(event), 1); 8183 } 8184 8185 static void hci_emit_hci_open_failed(void){ 8186 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8187 uint8_t event[2]; 8188 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8189 event[1] = sizeof(event) - 2u; 8190 hci_emit_btstack_event(event, sizeof(event), 1); 8191 } 8192 8193 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8194 log_info("hci_emit_dedicated_bonding_result %u ", status); 8195 uint8_t event[9]; 8196 int pos = 0; 8197 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8198 event[pos++] = sizeof(event) - 2u; 8199 event[pos++] = status; 8200 reverse_bd_addr(address, &event[pos]); 8201 hci_emit_btstack_event(event, sizeof(event), 1); 8202 } 8203 8204 8205 #ifdef ENABLE_CLASSIC 8206 8207 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8208 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8209 uint8_t event[5]; 8210 int pos = 0; 8211 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8212 event[pos++] = sizeof(event) - 2; 8213 little_endian_store_16(event, 2, con_handle); 8214 pos += 2; 8215 event[pos++] = level; 8216 hci_emit_btstack_event(event, sizeof(event), 1); 8217 } 8218 8219 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8220 if (!connection) return LEVEL_0; 8221 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8222 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8223 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8224 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8225 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8226 // LEVEL 4 always requires 128 bit encrytion key size 8227 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8228 security_level = LEVEL_3; 8229 } 8230 return security_level; 8231 } 8232 8233 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8234 uint8_t event[4]; 8235 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8236 event[1] = sizeof(event) - 2; 8237 event[2] = discoverable; 8238 event[3] = connectable; 8239 hci_emit_btstack_event(event, sizeof(event), 1); 8240 } 8241 8242 // query if remote side supports eSCO 8243 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8244 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8245 if (!connection) return false; 8246 return (connection->remote_supported_features[0] & 1) != 0; 8247 } 8248 8249 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8250 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8251 if (!connection) return 0; 8252 return connection->remote_supported_sco_packets; 8253 } 8254 8255 static bool hci_ssp_supported(hci_connection_t * connection){ 8256 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8257 return (connection->bonding_flags & mask) == mask; 8258 } 8259 8260 // query if remote side supports SSP 8261 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8262 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8263 if (!connection) return false; 8264 return hci_ssp_supported(connection) ? 1 : 0; 8265 } 8266 8267 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8268 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8269 } 8270 8271 /** 8272 * Check if remote supported features query has completed 8273 */ 8274 bool hci_remote_features_available(hci_con_handle_t handle){ 8275 hci_connection_t * connection = hci_connection_for_handle(handle); 8276 if (!connection) return false; 8277 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8278 } 8279 8280 /** 8281 * Trigger remote supported features query 8282 */ 8283 8284 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8285 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8286 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8287 } 8288 } 8289 8290 void hci_remote_features_query(hci_con_handle_t con_handle){ 8291 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8292 if (!connection) return; 8293 hci_trigger_remote_features_for_connection(connection); 8294 hci_run(); 8295 } 8296 8297 // GAP API 8298 /** 8299 * @bbrief enable/disable bonding. default is enabled 8300 * @praram enabled 8301 */ 8302 void gap_set_bondable_mode(int enable){ 8303 hci_stack->bondable = enable ? 1 : 0; 8304 } 8305 /** 8306 * @brief Get bondable mode. 8307 * @return 1 if bondable 8308 */ 8309 int gap_get_bondable_mode(void){ 8310 return hci_stack->bondable; 8311 } 8312 8313 /** 8314 * @brief map link keys to security levels 8315 */ 8316 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8317 switch (link_key_type){ 8318 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8319 return LEVEL_4; 8320 case COMBINATION_KEY: 8321 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8322 return LEVEL_3; 8323 default: 8324 return LEVEL_2; 8325 } 8326 } 8327 8328 /** 8329 * @brief map link keys to secure connection yes/no 8330 */ 8331 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8332 switch (link_key_type){ 8333 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8334 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8335 return true; 8336 default: 8337 return false; 8338 } 8339 } 8340 8341 /** 8342 * @brief map link keys to authenticated 8343 */ 8344 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8345 switch (link_key_type){ 8346 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8347 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8348 return true; 8349 default: 8350 return false; 8351 } 8352 } 8353 8354 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8355 log_info("gap_mitm_protection_required_for_security_level %u", level); 8356 return level > LEVEL_2; 8357 } 8358 8359 /** 8360 * @brief get current security level 8361 */ 8362 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8363 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8364 if (!connection) return LEVEL_0; 8365 return gap_security_level_for_connection(connection); 8366 } 8367 8368 /** 8369 * @brief request connection to device to 8370 * @result GAP_AUTHENTICATION_RESULT 8371 */ 8372 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8373 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8374 if (!connection){ 8375 hci_emit_security_level(con_handle, LEVEL_0); 8376 return; 8377 } 8378 8379 btstack_assert(hci_is_le_connection(connection) == false); 8380 8381 // 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) 8382 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8383 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8384 requested_level = LEVEL_4; 8385 } 8386 8387 gap_security_level_t current_level = gap_security_level(con_handle); 8388 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8389 requested_level, connection->requested_security_level, current_level); 8390 8391 // authentication active if authentication request was sent or planned level > 0 8392 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8393 if (authentication_active){ 8394 // authentication already active 8395 if (connection->requested_security_level < requested_level){ 8396 // increase requested level as new level is higher 8397 // TODO: handle re-authentication when done 8398 connection->requested_security_level = requested_level; 8399 } 8400 } else { 8401 // no request active, notify if security sufficient 8402 if (requested_level <= current_level){ 8403 hci_emit_security_level(con_handle, current_level); 8404 return; 8405 } 8406 8407 // store request 8408 connection->requested_security_level = requested_level; 8409 8410 // start to authenticate connection 8411 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8412 8413 // request remote features if not already active, also trigger hci_run 8414 hci_remote_features_query(con_handle); 8415 } 8416 } 8417 8418 /** 8419 * @brief start dedicated bonding with device. disconnect after bonding 8420 * @param device 8421 * @param request MITM protection 8422 * @result GAP_DEDICATED_BONDING_COMPLETE 8423 */ 8424 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8425 8426 // create connection state machine 8427 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8428 8429 if (!connection){ 8430 return BTSTACK_MEMORY_ALLOC_FAILED; 8431 } 8432 8433 // delete link key 8434 gap_drop_link_key_for_bd_addr(device); 8435 8436 // configure LEVEL_2/3, dedicated bonding 8437 connection->state = SEND_CREATE_CONNECTION; 8438 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8439 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8440 connection->bonding_flags = BONDING_DEDICATED; 8441 8442 hci_run(); 8443 8444 return 0; 8445 } 8446 8447 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8448 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8449 if (connection == NULL){ 8450 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8451 } 8452 if (defer){ 8453 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8454 } else { 8455 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8456 // trigger disconnect 8457 hci_run(); 8458 } 8459 return ERROR_CODE_SUCCESS; 8460 } 8461 8462 void gap_set_local_name(const char * local_name){ 8463 hci_stack->local_name = local_name; 8464 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8465 // also update EIR if not set by user 8466 if (hci_stack->eir_data == NULL){ 8467 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8468 } 8469 hci_run(); 8470 } 8471 #endif 8472 8473 8474 #ifdef ENABLE_BLE 8475 8476 #ifdef ENABLE_LE_CENTRAL 8477 void gap_start_scan(void){ 8478 hci_stack->le_scanning_enabled = true; 8479 hci_run(); 8480 } 8481 8482 void gap_stop_scan(void){ 8483 hci_stack->le_scanning_enabled = false; 8484 hci_run(); 8485 } 8486 8487 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8488 hci_stack->le_scan_type = scan_type; 8489 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8490 hci_stack->le_scan_interval = scan_interval; 8491 hci_stack->le_scan_window = scan_window; 8492 hci_stack->le_scanning_param_update = true; 8493 hci_run(); 8494 } 8495 8496 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8497 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8498 } 8499 8500 void gap_set_scan_duplicate_filter(bool enabled){ 8501 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8502 } 8503 8504 void gap_set_scan_phys(uint8_t phys){ 8505 // LE Coded and LE 1M PHY 8506 hci_stack->le_scan_phys = phys & 0x05; 8507 } 8508 8509 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8510 // disallow le connection if outgoing already active 8511 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8512 log_error("le connect already active"); 8513 return ERROR_CODE_COMMAND_DISALLOWED; 8514 } 8515 8516 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8517 if (conn == NULL) { 8518 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8519 if (conn == false){ 8520 // alloc failed 8521 log_info("gap_connect: failed to alloc hci_connection_t"); 8522 return BTSTACK_MEMORY_ALLOC_FAILED; 8523 } 8524 } else { 8525 switch (conn->state) { 8526 case RECEIVED_DISCONNECTION_COMPLETE: 8527 // connection was just disconnected, reset state and allow re-connect 8528 conn->role = HCI_ROLE_MASTER; 8529 break; 8530 default: 8531 return ERROR_CODE_COMMAND_DISALLOWED; 8532 } 8533 } 8534 8535 // set le connecting state 8536 if (hci_is_le_connection_type(addr_type)){ 8537 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8538 } 8539 8540 // trigger connect 8541 log_info("gap_connect: send create connection next"); 8542 conn->state = SEND_CREATE_CONNECTION; 8543 hci_run(); 8544 return ERROR_CODE_SUCCESS; 8545 } 8546 8547 // @assumption: only a single outgoing LE Connection exists 8548 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8549 btstack_linked_item_t *it; 8550 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8551 hci_connection_t * conn = (hci_connection_t *) it; 8552 if (hci_is_le_connection(conn)){ 8553 switch (conn->state){ 8554 case SEND_CREATE_CONNECTION: 8555 case SENT_CREATE_CONNECTION: 8556 return conn; 8557 default: 8558 break; 8559 }; 8560 } 8561 } 8562 return NULL; 8563 } 8564 8565 uint8_t gap_connect_cancel(void){ 8566 hci_connection_t * conn; 8567 switch (hci_stack->le_connecting_request){ 8568 case LE_CONNECTING_IDLE: 8569 break; 8570 case LE_CONNECTING_WHITELIST: 8571 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8572 hci_run(); 8573 break; 8574 case LE_CONNECTING_DIRECT: 8575 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8576 conn = gap_get_outgoing_le_connection(); 8577 if (conn == NULL){ 8578 hci_run(); 8579 } else { 8580 switch (conn->state){ 8581 case SEND_CREATE_CONNECTION: 8582 // skip sending create connection and emit event instead 8583 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8584 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8585 btstack_memory_hci_connection_free( conn ); 8586 break; 8587 case SENT_CREATE_CONNECTION: 8588 // let hci_run_general_gap_le cancel outgoing connection 8589 hci_run(); 8590 break; 8591 default: 8592 break; 8593 } 8594 } 8595 break; 8596 default: 8597 btstack_unreachable(); 8598 break; 8599 } 8600 return ERROR_CODE_SUCCESS; 8601 } 8602 8603 /** 8604 * @brief Set connection parameters for outgoing connections 8605 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8606 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8607 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8608 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8609 * @param conn_latency, default: 4 8610 * @param supervision_timeout (unit: 10ms), default: 720 ms 8611 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8612 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8613 */ 8614 8615 void gap_set_connection_phys(uint8_t phys){ 8616 // LE Coded, LE 1M, LE 2M PHY 8617 hci_stack->le_connection_phys = phys & 7; 8618 } 8619 8620 #endif 8621 8622 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8623 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8624 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8625 hci_stack->le_connection_scan_interval = conn_scan_interval; 8626 hci_stack->le_connection_scan_window = conn_scan_window; 8627 hci_stack->le_connection_interval_min = conn_interval_min; 8628 hci_stack->le_connection_interval_max = conn_interval_max; 8629 hci_stack->le_connection_latency = conn_latency; 8630 hci_stack->le_supervision_timeout = supervision_timeout; 8631 hci_stack->le_minimum_ce_length = min_ce_length; 8632 hci_stack->le_maximum_ce_length = max_ce_length; 8633 } 8634 8635 /** 8636 * @brief Updates the connection parameters for a given LE connection 8637 * @param handle 8638 * @param conn_interval_min (unit: 1.25ms) 8639 * @param conn_interval_max (unit: 1.25ms) 8640 * @param conn_latency 8641 * @param supervision_timeout (unit: 10ms) 8642 * @return 0 if ok 8643 */ 8644 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8645 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8646 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8647 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8648 connection->le_conn_interval_min = conn_interval_min; 8649 connection->le_conn_interval_max = conn_interval_max; 8650 connection->le_conn_latency = conn_latency; 8651 connection->le_supervision_timeout = supervision_timeout; 8652 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8653 hci_run(); 8654 return 0; 8655 } 8656 8657 /** 8658 * @brief Request an update of the connection parameter for a given LE connection 8659 * @param handle 8660 * @param conn_interval_min (unit: 1.25ms) 8661 * @param conn_interval_max (unit: 1.25ms) 8662 * @param conn_latency 8663 * @param supervision_timeout (unit: 10ms) 8664 * @return 0 if ok 8665 */ 8666 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8667 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8668 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8669 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8670 connection->le_conn_interval_min = conn_interval_min; 8671 connection->le_conn_interval_max = conn_interval_max; 8672 connection->le_conn_latency = conn_latency; 8673 connection->le_supervision_timeout = supervision_timeout; 8674 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8675 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8676 hci_emit_btstack_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8677 return 0; 8678 } 8679 8680 #ifdef ENABLE_LE_PERIPHERAL 8681 8682 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8683 static void hci_assert_advertisement_set_0_ready(void){ 8684 // force advertising set creation for legacy LE Advertising 8685 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8686 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8687 } 8688 } 8689 #endif 8690 8691 /** 8692 * @brief Set Advertisement Data 8693 * @param advertising_data_length 8694 * @param advertising_data (max 31 octets) 8695 * @note data is not copied, pointer has to stay valid 8696 */ 8697 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8698 hci_stack->le_advertisements_data_len = advertising_data_length; 8699 hci_stack->le_advertisements_data = advertising_data; 8700 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8701 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8702 hci_assert_advertisement_set_0_ready(); 8703 #endif 8704 hci_run(); 8705 } 8706 8707 /** 8708 * @brief Set Scan Response Data 8709 * @param advertising_data_length 8710 * @param advertising_data (max 31 octets) 8711 * @note data is not copied, pointer has to stay valid 8712 */ 8713 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8714 hci_stack->le_scan_response_data_len = scan_response_data_length; 8715 hci_stack->le_scan_response_data = scan_response_data; 8716 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8717 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8718 hci_assert_advertisement_set_0_ready(); 8719 #endif 8720 hci_run(); 8721 } 8722 8723 /** 8724 * @brief Set Advertisement Parameters 8725 * @param adv_int_min 8726 * @param adv_int_max 8727 * @param adv_type 8728 * @param direct_address_type 8729 * @param direct_address 8730 * @param channel_map 8731 * @param filter_policy 8732 * 8733 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8734 */ 8735 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8736 uint8_t direct_address_typ, bd_addr_t direct_address, 8737 uint8_t channel_map, uint8_t filter_policy) { 8738 8739 hci_stack->le_advertisements_interval_min = adv_int_min; 8740 hci_stack->le_advertisements_interval_max = adv_int_max; 8741 hci_stack->le_advertisements_type = adv_type; 8742 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8743 hci_stack->le_advertisements_channel_map = channel_map; 8744 hci_stack->le_advertisements_filter_policy = filter_policy; 8745 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8746 6); 8747 8748 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8749 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8750 hci_run(); 8751 } 8752 8753 /** 8754 * @brief Enable/Disable Advertisements 8755 * @param enabled 8756 */ 8757 void gap_advertisements_enable(int enabled){ 8758 if (enabled == 0){ 8759 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8760 } else { 8761 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8762 } 8763 hci_update_advertisements_enabled_for_current_roles(); 8764 hci_run(); 8765 } 8766 8767 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8768 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8769 btstack_linked_list_iterator_t it; 8770 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8771 while (btstack_linked_list_iterator_has_next(&it)){ 8772 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8773 if ( item->advertising_handle == advertising_handle ) { 8774 return item; 8775 } 8776 } 8777 return NULL; 8778 } 8779 8780 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8781 hci_stack->le_resolvable_private_address_update_s = update_s; 8782 hci_run(); 8783 return ERROR_CODE_SUCCESS; 8784 } 8785 8786 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8787 // find free advertisement handle 8788 uint8_t advertisement_handle; 8789 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8790 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8791 } 8792 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8793 // clear 8794 memset(storage, 0, sizeof(le_advertising_set_t)); 8795 // copy params 8796 storage->advertising_handle = advertisement_handle; 8797 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8798 // add to list 8799 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8800 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8801 *out_advertising_handle = advertisement_handle; 8802 // set tasks and start 8803 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8804 hci_run(); 8805 return ERROR_CODE_SUCCESS; 8806 } 8807 8808 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8809 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8810 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8811 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8812 // set tasks and start 8813 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8814 hci_run(); 8815 return ERROR_CODE_SUCCESS; 8816 } 8817 8818 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8819 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8820 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8821 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8822 return ERROR_CODE_SUCCESS; 8823 } 8824 8825 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8826 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8827 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8828 memcpy(advertising_set->random_address, random_address, 6); 8829 // set tasks and start 8830 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8831 hci_run(); 8832 return ERROR_CODE_SUCCESS; 8833 } 8834 8835 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8836 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8837 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8838 advertising_set->adv_data = advertising_data; 8839 advertising_set->adv_data_len = advertising_data_length; 8840 // set tasks and start 8841 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8842 hci_run(); 8843 return ERROR_CODE_SUCCESS; 8844 } 8845 8846 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){ 8847 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8848 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8849 advertising_set->scan_data = scan_response_data; 8850 advertising_set->scan_data_len = scan_response_data_length; 8851 // set tasks and start 8852 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8853 hci_run(); 8854 return ERROR_CODE_SUCCESS; 8855 } 8856 8857 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8858 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8859 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8860 advertising_set->enable_timeout = timeout; 8861 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8862 // set tasks and start 8863 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8864 hci_run(); 8865 return ERROR_CODE_SUCCESS; 8866 } 8867 8868 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8869 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8870 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8871 // set tasks and start 8872 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8873 hci_run(); 8874 return ERROR_CODE_SUCCESS; 8875 } 8876 8877 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8878 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8879 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8880 // set tasks and start 8881 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8882 hci_run(); 8883 return ERROR_CODE_SUCCESS; 8884 } 8885 8886 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8887 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8888 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8889 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8890 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8891 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8892 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8893 // set tasks and start 8894 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8895 hci_run(); 8896 return ERROR_CODE_SUCCESS; 8897 } 8898 8899 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8900 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8901 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8902 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8903 return ERROR_CODE_SUCCESS; 8904 } 8905 8906 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8907 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8908 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8909 advertising_set->periodic_data = periodic_data; 8910 advertising_set->periodic_data_len = periodic_data_length; 8911 // set tasks and start 8912 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8913 hci_run(); 8914 return ERROR_CODE_SUCCESS; 8915 } 8916 8917 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8918 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8919 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8920 // set tasks and start 8921 advertising_set->periodic_include_adi = include_adi; 8922 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8923 hci_run(); 8924 return ERROR_CODE_SUCCESS; 8925 } 8926 8927 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8928 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8929 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8930 // set tasks and start 8931 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8932 hci_run(); 8933 return ERROR_CODE_SUCCESS; 8934 } 8935 8936 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8937 hci_stack->le_past_mode = mode; 8938 hci_stack->le_past_skip = skip; 8939 hci_stack->le_past_sync_timeout = sync_timeout; 8940 hci_stack->le_past_cte_type = cte_type; 8941 hci_stack->le_past_set_default_params = true; 8942 hci_run(); 8943 return ERROR_CODE_SUCCESS; 8944 } 8945 8946 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8947 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8948 if (hci_connection == NULL){ 8949 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8950 } 8951 hci_connection->le_past_sync_handle = sync_handle; 8952 hci_connection->le_past_service_data = service_data; 8953 hci_run(); 8954 return ERROR_CODE_SUCCESS; 8955 } 8956 8957 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8958 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8959 if (hci_connection == NULL){ 8960 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8961 } 8962 hci_connection->le_past_advertising_handle = advertising_handle; 8963 hci_connection->le_past_service_data = service_data; 8964 hci_run(); 8965 return ERROR_CODE_SUCCESS; 8966 } 8967 8968 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8969 8970 #endif 8971 8972 #endif 8973 8974 void hci_le_set_own_address_type(uint8_t own_address_type){ 8975 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8976 if (own_address_type == hci_stack->le_own_addr_type) return; 8977 hci_stack->le_own_addr_type = own_address_type; 8978 8979 #ifdef ENABLE_LE_PERIPHERAL 8980 // update advertisement parameters, too 8981 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8982 hci_run(); 8983 #endif 8984 #ifdef ENABLE_LE_CENTRAL 8985 // note: we don't update scan parameters or modify ongoing connection attempts 8986 #endif 8987 } 8988 8989 void hci_le_random_address_set(const bd_addr_t random_address){ 8990 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8991 memcpy(hci_stack->le_random_address, random_address, 6); 8992 hci_stack->le_random_address_set = true; 8993 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8994 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8995 if (hci_le_extended_advertising_supported()){ 8996 hci_assert_advertisement_set_0_ready(); 8997 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8998 } 8999 #endif 9000 hci_run(); 9001 } 9002 9003 #endif 9004 9005 uint8_t gap_disconnect(hci_con_handle_t handle){ 9006 hci_connection_t * conn = hci_connection_for_handle(handle); 9007 if (!conn){ 9008 hci_emit_disconnection_complete(handle, 0); 9009 return 0; 9010 } 9011 // ignore if already disconnected 9012 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 9013 return 0; 9014 } 9015 conn->state = SEND_DISCONNECT; 9016 hci_run(); 9017 return 0; 9018 } 9019 9020 int gap_read_rssi(hci_con_handle_t con_handle){ 9021 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9022 if (hci_connection == NULL) return 0; 9023 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 9024 hci_run(); 9025 return 1; 9026 } 9027 9028 /** 9029 * @brief Get connection type 9030 * @param con_handle 9031 * @result connection_type 9032 */ 9033 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 9034 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9035 if (!conn) return GAP_CONNECTION_INVALID; 9036 switch (conn->address_type){ 9037 case BD_ADDR_TYPE_LE_PUBLIC: 9038 case BD_ADDR_TYPE_LE_RANDOM: 9039 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9040 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9041 return GAP_CONNECTION_LE; 9042 case BD_ADDR_TYPE_SCO: 9043 return GAP_CONNECTION_SCO; 9044 case BD_ADDR_TYPE_ACL: 9045 return GAP_CONNECTION_ACL; 9046 default: 9047 return GAP_CONNECTION_INVALID; 9048 } 9049 } 9050 9051 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9052 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9053 if (!conn) return HCI_ROLE_INVALID; 9054 return (hci_role_t) conn->role; 9055 } 9056 9057 9058 #ifdef ENABLE_CLASSIC 9059 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9060 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9061 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9062 conn->request_role = role; 9063 hci_run(); 9064 return ERROR_CODE_SUCCESS; 9065 } 9066 #endif 9067 9068 #ifdef ENABLE_BLE 9069 9070 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){ 9071 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9072 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9073 9074 conn->le_phy_update_all_phys = all_phys; 9075 conn->le_phy_update_tx_phys = tx_phys; 9076 conn->le_phy_update_rx_phys = rx_phys; 9077 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9078 9079 hci_run(); 9080 9081 return 0; 9082 } 9083 9084 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9085 9086 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9087 // incorrect configuration: 9088 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9089 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9090 btstack_assert(false); 9091 #endif 9092 9093 // check if already in list 9094 btstack_linked_list_iterator_t it; 9095 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9096 while (btstack_linked_list_iterator_has_next(&it)) { 9097 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9098 if (entry->address_type != address_type) { 9099 continue; 9100 } 9101 if (memcmp(entry->address, address, 6) != 0) { 9102 continue; 9103 } 9104 9105 // if already on controller: 9106 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9107 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9108 // drop remove request 9109 entry->state = LE_WHITELIST_ON_CONTROLLER; 9110 return ERROR_CODE_SUCCESS; 9111 } else { 9112 // disallow as already on controller 9113 return ERROR_CODE_COMMAND_DISALLOWED; 9114 } 9115 } 9116 9117 // assume scheduled to add 9118 return ERROR_CODE_COMMAND_DISALLOWED; 9119 } 9120 9121 // alloc and add to list 9122 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9123 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9124 entry->address_type = address_type; 9125 (void)memcpy(entry->address, address, 6); 9126 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9127 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9128 return ERROR_CODE_SUCCESS; 9129 } 9130 9131 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9132 btstack_linked_list_iterator_t it; 9133 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9134 while (btstack_linked_list_iterator_has_next(&it)){ 9135 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9136 if (entry->address_type != address_type) { 9137 continue; 9138 } 9139 if (memcmp(entry->address, address, 6) != 0) { 9140 continue; 9141 } 9142 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9143 // remove from controller if already present 9144 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9145 } else { 9146 // directly remove entry from whitelist 9147 btstack_linked_list_iterator_remove(&it); 9148 btstack_memory_whitelist_entry_free(entry); 9149 } 9150 return ERROR_CODE_SUCCESS; 9151 } 9152 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9153 } 9154 9155 static void hci_whitelist_clear(void){ 9156 btstack_linked_list_iterator_t it; 9157 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9158 while (btstack_linked_list_iterator_has_next(&it)){ 9159 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9160 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9161 // remove from controller if already present 9162 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9163 continue; 9164 } 9165 // directly remove entry from whitelist 9166 btstack_linked_list_iterator_remove(&it); 9167 btstack_memory_whitelist_entry_free(entry); 9168 } 9169 } 9170 9171 /** 9172 * @brief Clear Whitelist 9173 * @return 0 if ok 9174 */ 9175 uint8_t gap_whitelist_clear(void){ 9176 hci_whitelist_clear(); 9177 hci_run(); 9178 return ERROR_CODE_SUCCESS; 9179 } 9180 9181 /** 9182 * @brief Add Device to Whitelist 9183 * @param address_typ 9184 * @param address 9185 * @return 0 if ok 9186 */ 9187 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9188 uint8_t status = hci_whitelist_add(address_type, address); 9189 if (status){ 9190 return status; 9191 } 9192 hci_run(); 9193 return ERROR_CODE_SUCCESS; 9194 } 9195 9196 /** 9197 * @brief Remove Device from Whitelist 9198 * @param address_typ 9199 * @param address 9200 * @return 0 if ok 9201 */ 9202 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9203 uint8_t status = hci_whitelist_remove(address_type, address); 9204 if (status){ 9205 return status; 9206 } 9207 hci_run(); 9208 return ERROR_CODE_SUCCESS; 9209 } 9210 9211 #ifdef ENABLE_LE_CENTRAL 9212 /** 9213 * @brief Connect with Whitelist 9214 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9215 * @return - if ok 9216 */ 9217 uint8_t gap_connect_with_whitelist(void){ 9218 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9219 return ERROR_CODE_COMMAND_DISALLOWED; 9220 } 9221 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9222 hci_run(); 9223 return ERROR_CODE_SUCCESS; 9224 } 9225 9226 /** 9227 * @brief Auto Connection Establishment - Start Connecting to device 9228 * @param address_typ 9229 * @param address 9230 * @return 0 if ok 9231 */ 9232 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9233 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9234 return ERROR_CODE_COMMAND_DISALLOWED; 9235 } 9236 9237 uint8_t status = hci_whitelist_add(address_type, address); 9238 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9239 return status; 9240 } 9241 9242 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9243 9244 hci_run(); 9245 return ERROR_CODE_SUCCESS; 9246 } 9247 9248 /** 9249 * @brief Auto Connection Establishment - Stop Connecting to device 9250 * @param address_typ 9251 * @param address 9252 * @return 0 if ok 9253 */ 9254 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9255 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9256 return ERROR_CODE_COMMAND_DISALLOWED; 9257 } 9258 9259 hci_whitelist_remove(address_type, address); 9260 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9261 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9262 } 9263 hci_run(); 9264 return 0; 9265 } 9266 9267 /** 9268 * @brief Auto Connection Establishment - Stop everything 9269 * @note Convenience function to stop all active auto connection attempts 9270 */ 9271 uint8_t gap_auto_connection_stop_all(void){ 9272 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9273 return ERROR_CODE_COMMAND_DISALLOWED; 9274 } 9275 hci_whitelist_clear(); 9276 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9277 hci_run(); 9278 return ERROR_CODE_SUCCESS; 9279 } 9280 9281 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9282 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9283 if (!conn) return 0; 9284 return conn->le_connection_interval; 9285 } 9286 #endif 9287 #endif 9288 9289 #ifdef ENABLE_CLASSIC 9290 /** 9291 * @brief Set Extended Inquiry Response data 9292 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9293 * @note has to be done before stack starts up 9294 */ 9295 void gap_set_extended_inquiry_response(const uint8_t * data){ 9296 hci_stack->eir_data = data; 9297 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9298 hci_run(); 9299 } 9300 9301 /** 9302 * @brief Start GAP Classic Inquiry 9303 * @param duration in 1.28s units 9304 * @return 0 if ok 9305 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9306 */ 9307 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9308 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9309 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9310 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9311 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9312 } 9313 hci_stack->inquiry_state = duration_in_1280ms_units; 9314 hci_stack->inquiry_max_period_length = 0; 9315 hci_stack->inquiry_min_period_length = 0; 9316 hci_run(); 9317 return 0; 9318 } 9319 9320 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9321 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9322 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9323 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9324 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9325 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9326 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9327 9328 hci_stack->inquiry_state = duration; 9329 hci_stack->inquiry_max_period_length = max_period_length; 9330 hci_stack->inquiry_min_period_length = min_period_length; 9331 hci_run(); 9332 return 0; 9333 } 9334 9335 /** 9336 * @brief Stop GAP Classic Inquiry 9337 * @return 0 if ok 9338 */ 9339 int gap_inquiry_stop(void){ 9340 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9341 // emit inquiry complete event, before it even started 9342 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9343 hci_emit_btstack_event(event, sizeof(event), 1); 9344 return 0; 9345 } 9346 switch (hci_stack->inquiry_state){ 9347 case GAP_INQUIRY_STATE_ACTIVE: 9348 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9349 hci_run(); 9350 return ERROR_CODE_SUCCESS; 9351 case GAP_INQUIRY_STATE_PERIODIC: 9352 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9353 hci_run(); 9354 return ERROR_CODE_SUCCESS; 9355 default: 9356 return ERROR_CODE_COMMAND_DISALLOWED; 9357 } 9358 } 9359 9360 void gap_inquiry_set_lap(uint32_t lap){ 9361 hci_stack->inquiry_lap = lap; 9362 } 9363 9364 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9365 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9366 hci_stack->inquiry_scan_window = inquiry_scan_window; 9367 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9368 hci_run(); 9369 } 9370 9371 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9372 { 9373 hci_stack->inquiry_tx_power_level = tx_power; 9374 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9375 hci_run(); 9376 } 9377 9378 9379 /** 9380 * @brief Remote Name Request 9381 * @param addr 9382 * @param page_scan_repetition_mode 9383 * @param clock_offset only used when bit 15 is set 9384 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9385 */ 9386 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9387 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9388 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9389 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9390 hci_stack->remote_name_clock_offset = clock_offset; 9391 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9392 hci_run(); 9393 return 0; 9394 } 9395 9396 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9397 hci_stack->gap_pairing_state = state; 9398 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9399 hci_run(); 9400 return 0; 9401 } 9402 9403 /** 9404 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9405 * @param addr 9406 * @param pin_data 9407 * @param pin_len 9408 * @return 0 if ok 9409 */ 9410 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9411 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9412 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9413 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9414 hci_stack->gap_pairing_pin_len = pin_len; 9415 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9416 } 9417 9418 /** 9419 * @brief Legacy Pairing Pin Code Response 9420 * @param addr 9421 * @param pin 9422 * @return 0 if ok 9423 */ 9424 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9425 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9426 } 9427 9428 /** 9429 * @brief Abort Legacy Pairing 9430 * @param addr 9431 * @param pin 9432 * @return 0 if ok 9433 */ 9434 int gap_pin_code_negative(bd_addr_t addr){ 9435 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9436 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9437 } 9438 9439 /** 9440 * @brief SSP Passkey Response 9441 * @param addr 9442 * @param passkey 9443 * @return 0 if ok 9444 */ 9445 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9446 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9447 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9448 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9449 } 9450 9451 /** 9452 * @brief Abort SSP Passkey Entry/Pairing 9453 * @param addr 9454 * @param pin 9455 * @return 0 if ok 9456 */ 9457 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9458 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9459 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9460 } 9461 9462 /** 9463 * @brief Accept SSP Numeric Comparison 9464 * @param addr 9465 * @param passkey 9466 * @return 0 if ok 9467 */ 9468 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9469 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9470 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9471 } 9472 9473 /** 9474 * @brief Abort SSP Numeric Comparison/Pairing 9475 * @param addr 9476 * @param pin 9477 * @return 0 if ok 9478 */ 9479 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9480 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9481 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9482 } 9483 9484 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9485 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9486 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9487 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9488 connectionSetAuthenticationFlags(conn, flag); 9489 hci_run(); 9490 return ERROR_CODE_SUCCESS; 9491 } 9492 #endif 9493 9494 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9495 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9496 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9497 } 9498 9499 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9500 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9501 } 9502 #endif 9503 9504 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9505 /** 9506 * @brief Report Remote OOB Data 9507 * @param bd_addr 9508 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9509 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9510 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9511 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9512 */ 9513 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){ 9514 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9515 if (connection == NULL) { 9516 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9517 } 9518 connection->classic_oob_c_192 = c_192; 9519 connection->classic_oob_r_192 = r_192; 9520 9521 // ignore P-256 if not supported by us 9522 if (hci_stack->secure_connections_active){ 9523 connection->classic_oob_c_256 = c_256; 9524 connection->classic_oob_r_256 = r_256; 9525 } 9526 9527 return ERROR_CODE_SUCCESS; 9528 } 9529 /** 9530 * @brief Generate new OOB data 9531 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9532 */ 9533 void gap_ssp_generate_oob_data(void){ 9534 hci_stack->classic_read_local_oob_data = true; 9535 hci_run(); 9536 } 9537 9538 #endif 9539 9540 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9541 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9542 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9543 if (connection == NULL) { 9544 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9545 } 9546 9547 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9548 connection->link_key_type = type; 9549 9550 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9551 } 9552 9553 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9554 /** 9555 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9556 * @param inquiry_mode see bluetooth_defines.h 9557 */ 9558 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9559 hci_stack->inquiry_mode = inquiry_mode; 9560 } 9561 9562 /** 9563 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9564 */ 9565 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9566 hci_stack->sco_voice_setting = voice_setting; 9567 } 9568 9569 /** 9570 * @brief Get SCO Voice Setting 9571 * @return current voice setting 9572 */ 9573 uint16_t hci_get_sco_voice_setting(void){ 9574 return hci_stack->sco_voice_setting; 9575 } 9576 9577 static int hci_have_usb_transport(void){ 9578 if (!hci_stack->hci_transport) return 0; 9579 const char * transport_name = hci_stack->hci_transport->name; 9580 if (!transport_name) return 0; 9581 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9582 } 9583 9584 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9585 uint16_t sco_packet_length = 0; 9586 9587 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9588 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9589 int multiplier; 9590 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9591 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9592 multiplier = 2; 9593 } else { 9594 multiplier = 1; 9595 } 9596 #endif 9597 9598 #ifdef ENABLE_SCO_OVER_HCI 9599 if (hci_have_usb_transport()){ 9600 // see Core Spec for H2 USB Transfer. 9601 // 3 byte SCO header + 24 bytes per connection 9602 // @note multiple sco connections not supported currently 9603 sco_packet_length = 3 + 24 * multiplier; 9604 } else { 9605 // 3 byte SCO header + SCO packet length over the air 9606 sco_packet_length = 3 + payload_size * multiplier; 9607 // assert that it still fits inside an SCO buffer 9608 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9609 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9610 } 9611 } 9612 #endif 9613 #ifdef HAVE_SCO_TRANSPORT 9614 // 3 byte SCO header + SCO packet length over the air 9615 sco_packet_length = 3 + payload_size * multiplier; 9616 // assert that it still fits inside an SCO buffer 9617 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9618 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9619 } 9620 #endif 9621 return sco_packet_length; 9622 } 9623 9624 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9625 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9626 if (connection != NULL){ 9627 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9628 } 9629 return 0; 9630 } 9631 9632 uint16_t hci_get_sco_packet_length(void){ 9633 btstack_linked_list_iterator_t it; 9634 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9635 while (btstack_linked_list_iterator_has_next(&it)){ 9636 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9637 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9638 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9639 } 9640 } 9641 return 0; 9642 } 9643 9644 /** 9645 * @brief Sets the master/slave policy 9646 * @param policy (0: attempt to become master, 1: let connecting device decide) 9647 */ 9648 void hci_set_master_slave_policy(uint8_t policy){ 9649 hci_stack->master_slave_policy = policy; 9650 } 9651 9652 #endif 9653 9654 HCI_STATE hci_get_state(void){ 9655 return hci_stack->state; 9656 } 9657 9658 #ifdef ENABLE_CLASSIC 9659 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9660 hci_stack->gap_classic_accept_callback = accept_callback; 9661 } 9662 #endif 9663 9664 /** 9665 * @brief Set callback for Bluetooth Hardware Error 9666 */ 9667 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9668 hci_stack->hardware_error_callback = fn; 9669 } 9670 9671 void hci_disconnect_all(void){ 9672 btstack_linked_list_iterator_t it; 9673 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9674 while (btstack_linked_list_iterator_has_next(&it)){ 9675 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9676 if (con->state == SENT_DISCONNECT) continue; 9677 con->state = SEND_DISCONNECT; 9678 } 9679 hci_run(); 9680 } 9681 9682 uint16_t hci_get_manufacturer(void){ 9683 return hci_stack->manufacturer; 9684 } 9685 9686 #ifdef ENABLE_BLE 9687 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9688 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9689 if (!hci_con) return NULL; 9690 return &hci_con->sm_connection; 9691 } 9692 9693 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9694 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9695 #endif 9696 9697 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9698 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9699 if (hci_connection == NULL) return 0; 9700 if (hci_is_le_connection(hci_connection)){ 9701 #ifdef ENABLE_BLE 9702 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9703 if (sm_conn->sm_connection_encrypted != 0u) { 9704 return sm_conn->sm_actual_encryption_key_size; 9705 } 9706 #endif 9707 } else { 9708 #ifdef ENABLE_CLASSIC 9709 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9710 return hci_connection->encryption_key_size; 9711 } 9712 #endif 9713 } 9714 return 0; 9715 } 9716 9717 bool gap_authenticated(hci_con_handle_t con_handle){ 9718 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9719 if (hci_connection == NULL) return false; 9720 9721 switch (hci_connection->address_type){ 9722 #ifdef ENABLE_BLE 9723 case BD_ADDR_TYPE_LE_PUBLIC: 9724 case BD_ADDR_TYPE_LE_RANDOM: 9725 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9726 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9727 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9728 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9729 #endif 9730 #ifdef ENABLE_CLASSIC 9731 case BD_ADDR_TYPE_SCO: 9732 case BD_ADDR_TYPE_ACL: 9733 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9734 #endif 9735 default: 9736 return false; 9737 } 9738 } 9739 9740 bool gap_secure_connection(hci_con_handle_t con_handle){ 9741 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9742 if (hci_connection == NULL) return 0; 9743 9744 switch (hci_connection->address_type){ 9745 #ifdef ENABLE_BLE 9746 case BD_ADDR_TYPE_LE_PUBLIC: 9747 case BD_ADDR_TYPE_LE_RANDOM: 9748 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9749 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9750 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9751 return hci_connection->sm_connection.sm_connection_sc; 9752 #endif 9753 #ifdef ENABLE_CLASSIC 9754 case BD_ADDR_TYPE_SCO: 9755 case BD_ADDR_TYPE_ACL: 9756 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9757 #endif 9758 default: 9759 return false; 9760 } 9761 } 9762 9763 bool gap_bonded(hci_con_handle_t con_handle){ 9764 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9765 if (hci_connection == NULL) return 0; 9766 9767 #ifdef ENABLE_CLASSIC 9768 link_key_t link_key; 9769 link_key_type_t link_key_type; 9770 #endif 9771 switch (hci_connection->address_type){ 9772 #ifdef ENABLE_BLE 9773 case BD_ADDR_TYPE_LE_PUBLIC: 9774 case BD_ADDR_TYPE_LE_RANDOM: 9775 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9776 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9777 return hci_connection->sm_connection.sm_le_db_index >= 0; 9778 #endif 9779 #ifdef ENABLE_CLASSIC 9780 case BD_ADDR_TYPE_SCO: 9781 case BD_ADDR_TYPE_ACL: 9782 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9783 #endif 9784 default: 9785 return false; 9786 } 9787 } 9788 9789 #ifdef ENABLE_BLE 9790 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9791 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9792 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9793 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9794 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9795 return sm_conn->sm_connection_authorization_state; 9796 } 9797 #endif 9798 9799 #ifdef ENABLE_CLASSIC 9800 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){ 9801 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9802 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9803 conn->sniff_min_interval = sniff_min_interval; 9804 conn->sniff_max_interval = sniff_max_interval; 9805 conn->sniff_attempt = sniff_attempt; 9806 conn->sniff_timeout = sniff_timeout; 9807 hci_run(); 9808 return 0; 9809 } 9810 9811 /** 9812 * @brief Exit Sniff mode 9813 * @param con_handle 9814 @ @return 0 if ok 9815 */ 9816 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9817 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9818 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9819 conn->sniff_min_interval = 0xffff; 9820 hci_run(); 9821 return 0; 9822 } 9823 9824 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){ 9825 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9826 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9827 conn->sniff_subrating_max_latency = max_latency; 9828 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9829 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9830 hci_run(); 9831 return ERROR_CODE_SUCCESS; 9832 } 9833 9834 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){ 9835 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9836 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9837 conn->qos_service_type = service_type; 9838 conn->qos_token_rate = token_rate; 9839 conn->qos_peak_bandwidth = peak_bandwidth; 9840 conn->qos_latency = latency; 9841 conn->qos_delay_variation = delay_variation; 9842 hci_run(); 9843 return ERROR_CODE_SUCCESS; 9844 } 9845 9846 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9847 hci_stack->new_page_scan_interval = page_scan_interval; 9848 hci_stack->new_page_scan_window = page_scan_window; 9849 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9850 hci_run(); 9851 } 9852 9853 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9854 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9855 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9856 hci_run(); 9857 } 9858 9859 void gap_set_page_timeout(uint16_t page_timeout){ 9860 hci_stack->page_timeout = page_timeout; 9861 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9862 hci_run(); 9863 } 9864 9865 #endif 9866 9867 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9868 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9869 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9870 if (le_device_db_index >= le_device_db_max_count()) return; 9871 uint8_t offset = le_device_db_index >> 3; 9872 uint8_t mask = 1 << (le_device_db_index & 7); 9873 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9874 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9875 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9876 // note: go back to remove entries, otherwise, a remove + add will skip the add 9877 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9878 } 9879 } 9880 9881 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9882 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9883 if (le_device_db_index >= le_device_db_max_count()) return; 9884 uint8_t offset = le_device_db_index >> 3; 9885 uint8_t mask = 1 << (le_device_db_index & 7); 9886 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9887 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9888 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9889 } 9890 } 9891 9892 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9893 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9894 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9895 } 9896 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9897 // restart le resolving list update 9898 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9899 } 9900 return ERROR_CODE_SUCCESS; 9901 } 9902 9903 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9904 hci_stack->le_privacy_mode = privacy_mode; 9905 } 9906 #endif 9907 9908 #ifdef ENABLE_BLE 9909 #ifdef ENABLE_LE_CENTRAL 9910 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9911 9912 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9913 9914 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9915 // incorrect configuration: 9916 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9917 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9918 btstack_assert(false); 9919 #endif 9920 9921 // check if already in list 9922 btstack_linked_list_iterator_t it; 9923 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9924 while (btstack_linked_list_iterator_has_next(&it)) { 9925 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9926 if (entry->sid != advertising_sid) { 9927 continue; 9928 } 9929 if (entry->address_type != address_type) { 9930 continue; 9931 } 9932 if (memcmp(entry->address, address, 6) != 0) { 9933 continue; 9934 } 9935 // disallow if already scheduled to add 9936 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9937 return ERROR_CODE_COMMAND_DISALLOWED; 9938 } 9939 // still on controller, but scheduled to remove -> re-add 9940 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9941 return ERROR_CODE_SUCCESS; 9942 } 9943 // alloc and add to list 9944 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9945 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9946 entry->sid = advertising_sid; 9947 entry->address_type = address_type; 9948 (void)memcpy(entry->address, address, 6); 9949 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9950 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9951 return ERROR_CODE_SUCCESS; 9952 } 9953 9954 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9955 btstack_linked_list_iterator_t it; 9956 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9957 while (btstack_linked_list_iterator_has_next(&it)){ 9958 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9959 if (entry->sid != advertising_sid) { 9960 continue; 9961 } 9962 if (entry->address_type != address_type) { 9963 continue; 9964 } 9965 if (memcmp(entry->address, address, 6) != 0) { 9966 continue; 9967 } 9968 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9969 // remove from controller if already present 9970 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9971 } else { 9972 // directly remove entry from whitelist 9973 btstack_linked_list_iterator_remove(&it); 9974 btstack_memory_periodic_advertiser_list_entry_free(entry); 9975 } 9976 return ERROR_CODE_SUCCESS; 9977 } 9978 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9979 } 9980 9981 static void hci_periodic_advertiser_list_clear(void){ 9982 btstack_linked_list_iterator_t it; 9983 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9984 while (btstack_linked_list_iterator_has_next(&it)){ 9985 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9986 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9987 // remove from controller if already present 9988 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9989 continue; 9990 } 9991 // directly remove entry from whitelist 9992 btstack_linked_list_iterator_remove(&it); 9993 btstack_memory_periodic_advertiser_list_entry_free(entry); 9994 } 9995 } 9996 9997 uint8_t gap_periodic_advertiser_list_clear(void){ 9998 hci_periodic_advertiser_list_clear(); 9999 hci_run(); 10000 return ERROR_CODE_SUCCESS; 10001 } 10002 10003 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10004 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 10005 if (status){ 10006 return status; 10007 } 10008 hci_run(); 10009 return ERROR_CODE_SUCCESS; 10010 } 10011 10012 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10013 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 10014 if (status){ 10015 return status; 10016 } 10017 hci_run(); 10018 return ERROR_CODE_SUCCESS; 10019 } 10020 10021 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 10022 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 10023 // abort if already active 10024 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 10025 return ERROR_CODE_COMMAND_DISALLOWED; 10026 } 10027 // store request 10028 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 10029 hci_stack->le_periodic_sync_options = options; 10030 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 10031 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 10032 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 10033 hci_stack->le_periodic_sync_skip = skip; 10034 hci_stack->le_periodic_sync_timeout = sync_timeout; 10035 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 10036 10037 hci_run(); 10038 return ERROR_CODE_SUCCESS; 10039 } 10040 10041 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 10042 // abort if not requested 10043 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 10044 return ERROR_CODE_COMMAND_DISALLOWED; 10045 } 10046 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 10047 hci_run(); 10048 return ERROR_CODE_SUCCESS; 10049 } 10050 10051 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10052 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10053 return ERROR_CODE_COMMAND_DISALLOWED; 10054 } 10055 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10056 hci_run(); 10057 return ERROR_CODE_SUCCESS; 10058 } 10059 10060 #endif 10061 #endif 10062 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10063 static hci_iso_stream_t * 10064 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10065 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10066 if (iso_stream != NULL){ 10067 iso_stream->iso_type = iso_type; 10068 iso_stream->state = state; 10069 iso_stream->group_id = group_id; 10070 iso_stream->stream_id = stream_id; 10071 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10072 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10073 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10074 } 10075 return iso_stream; 10076 } 10077 10078 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10079 btstack_linked_list_iterator_t it; 10080 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10081 while (btstack_linked_list_iterator_has_next(&it)){ 10082 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10083 if (iso_stream->cis_handle == con_handle ) { 10084 return iso_stream; 10085 } 10086 } 10087 return NULL; 10088 } 10089 10090 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10091 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10092 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10093 btstack_memory_hci_iso_stream_free(iso_stream); 10094 } 10095 10096 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10097 btstack_linked_list_iterator_t it; 10098 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10099 while (btstack_linked_list_iterator_has_next(&it)){ 10100 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10101 if ((iso_stream->group_id == group_id) && 10102 (iso_stream->iso_type == iso_type)){ 10103 btstack_linked_list_iterator_remove(&it); 10104 btstack_memory_hci_iso_stream_free(iso_stream); 10105 } 10106 } 10107 } 10108 10109 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10110 btstack_linked_list_iterator_t it; 10111 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10112 while (btstack_linked_list_iterator_has_next(&it)){ 10113 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10114 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10115 (iso_stream->group_id == group_id)){ 10116 btstack_linked_list_iterator_remove(&it); 10117 btstack_memory_hci_iso_stream_free(iso_stream); 10118 } 10119 } 10120 } 10121 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10122 btstack_linked_list_iterator_t it; 10123 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10124 while (btstack_linked_list_iterator_has_next(&it)){ 10125 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10126 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10127 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10128 } 10129 } 10130 } 10131 10132 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10133 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10134 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10135 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10136 return (sdu_len_offset + 2 + sdu_len) == size; 10137 } 10138 10139 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10140 if (iso_stream == NULL){ 10141 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10142 return; 10143 } 10144 10145 if (hci_stack->iso_packet_handler == NULL) { 10146 return; 10147 } 10148 10149 // parse header 10150 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10151 uint16_t data_total_length = little_endian_read_16(packet, 2); 10152 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10153 10154 // assert packet is complete 10155 if ((data_total_length + 4u) != size){ 10156 return; 10157 } 10158 10159 if ((pb_flag & 0x01) == 0){ 10160 if (pb_flag == 0x02){ 10161 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10162 if (hci_iso_sdu_complete(packet, size)) { 10163 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10164 } 10165 } else { 10166 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10167 if (size > sizeof(iso_stream->reassembly_buffer)){ 10168 return; 10169 } 10170 memcpy(iso_stream->reassembly_buffer, packet, size); 10171 // fix pb_flag 10172 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10173 iso_stream->reassembly_pos = size; 10174 } 10175 } else { 10176 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10177 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10178 if (ts_flag != 0){ 10179 return; 10180 } 10181 // append fragment 10182 if (iso_stream->reassembly_pos == 0){ 10183 return; 10184 } 10185 10186 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10187 // reset reassembly buffer 10188 iso_stream->reassembly_pos = 0; 10189 return; 10190 } 10191 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10192 iso_stream->reassembly_pos += data_total_length; 10193 10194 // deliver if last fragment and SDU complete 10195 if (pb_flag == 0x03){ 10196 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10197 // fix data_total_length 10198 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10199 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10200 } 10201 // reset reassembly buffer 10202 iso_stream->reassembly_pos = 0; 10203 } 10204 } 10205 } 10206 10207 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10208 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10209 uint16_t pos = 0; 10210 event[pos++] = HCI_EVENT_META_GAP; 10211 event[pos++] = 4 + (2 * big->num_bis); 10212 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10213 event[pos++] = status; 10214 event[pos++] = big->big_handle; 10215 event[pos++] = big->num_bis; 10216 uint8_t i; 10217 for (i=0;i<big->num_bis;i++){ 10218 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10219 pos += 2; 10220 } 10221 hci_emit_btstack_event(event, pos, 0); 10222 } 10223 10224 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10225 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10226 uint16_t pos = 0; 10227 event[pos++] = HCI_EVENT_META_GAP; 10228 event[pos++] = 4 + (2 * cig->num_cis); 10229 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10230 event[pos++] = status; 10231 event[pos++] = cig->cig_id; 10232 event[pos++] = cig->num_cis; 10233 uint8_t i; 10234 for (i=0;i<cig->num_cis;i++){ 10235 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10236 pos += 2; 10237 } 10238 hci_emit_btstack_event(event, pos, 0); 10239 } 10240 10241 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10242 uint16_t pos = 0; 10243 event[pos++] = HCI_EVENT_META_GAP; 10244 event[pos++] = 8; 10245 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10246 event[pos++] = status; 10247 event[pos++] = iso_stream->group_id; 10248 event[pos++] = iso_stream->stream_id; 10249 little_endian_store_16(event, pos, iso_stream->cis_handle); 10250 pos += 2; 10251 little_endian_store_16(event, pos, iso_stream->acl_handle); 10252 pos += 2; 10253 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10254 pos += 2; 10255 event[pos++] = iso_stream->number_of_subevents; 10256 event[pos++] = iso_stream->burst_number_c_to_p; 10257 event[pos++] = iso_stream->burst_number_p_to_c; 10258 event[pos++] = iso_stream->flush_timeout_c_to_p; 10259 event[pos++] = iso_stream->flush_timeout_p_to_c; 10260 return pos; 10261 } 10262 10263 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10264 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10265 // cache data before finalizing struct 10266 uint8_t event [17]; 10267 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10268 btstack_assert(pos <= sizeof(event)); 10269 if (status != ERROR_CODE_SUCCESS){ 10270 hci_iso_stream_finalize(iso_stream); 10271 } 10272 hci_emit_btstack_event(event, pos, 0); 10273 } 10274 10275 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10276 uint8_t event [4]; 10277 uint16_t pos = 0; 10278 event[pos++] = HCI_EVENT_META_GAP; 10279 event[pos++] = 2; 10280 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10281 event[pos++] = big->big_handle; 10282 hci_emit_btstack_event(event, pos, 0); 10283 } 10284 10285 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10286 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10287 uint16_t pos = 0; 10288 event[pos++] = HCI_EVENT_META_GAP; 10289 event[pos++] = 4; 10290 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10291 event[pos++] = status; 10292 event[pos++] = big_sync->big_handle; 10293 event[pos++] = big_sync->num_bis; 10294 uint8_t i; 10295 for (i=0;i<big_sync->num_bis;i++){ 10296 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10297 pos += 2; 10298 } 10299 hci_emit_btstack_event(event, pos, 0); 10300 } 10301 10302 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10303 uint8_t event [4]; 10304 uint16_t pos = 0; 10305 event[pos++] = HCI_EVENT_META_GAP; 10306 event[pos++] = 2; 10307 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10308 event[pos++] = big_handle; 10309 hci_emit_btstack_event(event, pos, 0); 10310 } 10311 10312 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10313 uint8_t event[6]; 10314 uint16_t pos = 0; 10315 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10316 event[pos++] = sizeof(event) - 2; 10317 event[pos++] = big->big_handle; 10318 event[pos++] = bis_index; 10319 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10320 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10321 } 10322 10323 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10324 uint8_t event[4]; 10325 uint16_t pos = 0; 10326 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10327 event[pos++] = sizeof(event) - 2; 10328 little_endian_store_16(event, pos, cis_con_handle); 10329 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10330 } 10331 10332 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10333 btstack_linked_list_iterator_t it; 10334 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10335 while (btstack_linked_list_iterator_has_next(&it)){ 10336 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10337 if ( big->big_handle == big_handle ) { 10338 return big; 10339 } 10340 } 10341 return NULL; 10342 } 10343 10344 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10345 btstack_linked_list_iterator_t it; 10346 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10347 while (btstack_linked_list_iterator_has_next(&it)){ 10348 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10349 if ( big_sync->big_handle == big_handle ) { 10350 return big_sync; 10351 } 10352 } 10353 return NULL; 10354 } 10355 10356 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10357 hci_stack->iso_packets_to_queue = num_packets; 10358 } 10359 10360 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10361 btstack_linked_list_iterator_t it; 10362 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10363 while (btstack_linked_list_iterator_has_next(&it)){ 10364 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10365 if ( cig->cig_id == cig_id ) { 10366 return cig; 10367 } 10368 } 10369 return NULL; 10370 } 10371 10372 static void hci_iso_notify_can_send_now(void){ 10373 10374 // BIG 10375 10376 btstack_linked_list_iterator_t it; 10377 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10378 while (btstack_linked_list_iterator_has_next(&it)){ 10379 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10380 // track number completed packet timestamps 10381 if (big->num_completed_timestamp_current_valid){ 10382 big->num_completed_timestamp_current_valid = false; 10383 if (big->num_completed_timestamp_previous_valid){ 10384 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10385 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10386 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10387 big->num_completed_timestamp_previous_ms); 10388 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10389 // to catch up, skip packet on all BIS 10390 uint8_t i; 10391 for (i=0;i<big->num_bis;i++){ 10392 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10393 if (iso_stream){ 10394 iso_stream->num_packets_to_skip++; 10395 } 10396 } 10397 } 10398 } 10399 big->num_completed_timestamp_previous_valid = true; 10400 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10401 } 10402 10403 if (big->can_send_now_requested){ 10404 // check if no outgoing iso packets pending and no can send now have to be emitted 10405 uint8_t i; 10406 bool can_send = true; 10407 uint8_t num_iso_queued_minimum = 0; 10408 for (i=0;i<big->num_bis;i++){ 10409 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10410 if (iso_stream == NULL) continue; 10411 // handle case where individual ISO packet was sent too late: 10412 // for each additionally queued packet, a new one needs to get skipped 10413 if (i==0){ 10414 num_iso_queued_minimum = iso_stream->num_packets_sent; 10415 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10416 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10417 iso_stream->num_packets_to_skip += num_packets_to_skip; 10418 iso_stream->num_packets_sent -= num_packets_to_skip; 10419 } 10420 // check if we can send now 10421 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10422 can_send = false; 10423 break; 10424 } 10425 } 10426 if (can_send){ 10427 // propagate can send now to individual streams 10428 big->can_send_now_requested = false; 10429 for (i=0;i<big->num_bis;i++){ 10430 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10431 iso_stream->emit_ready_to_send = true; 10432 } 10433 } 10434 } 10435 } 10436 10437 if (hci_stack->hci_packet_buffer_reserved) return; 10438 10439 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10440 while (btstack_linked_list_iterator_has_next(&it)){ 10441 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10442 // report bis ready 10443 uint8_t i; 10444 for (i=0;i<big->num_bis;i++){ 10445 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10446 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10447 iso_stream->emit_ready_to_send = false; 10448 hci_emit_bis_can_send_now(big, i); 10449 if (hci_stack->hci_packet_buffer_reserved) return; 10450 } 10451 } 10452 } 10453 10454 10455 // CIS 10456 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10457 while (btstack_linked_list_iterator_has_next(&it)) { 10458 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10459 if ((iso_stream->can_send_now_requested) && 10460 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10461 iso_stream->can_send_now_requested = false; 10462 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10463 if (hci_stack->hci_packet_buffer_reserved) return; 10464 } 10465 } 10466 } 10467 10468 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10469 // make big handle unique and usuable for big and big sync 10470 if (hci_big_for_handle(big_handle) != NULL){ 10471 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10472 } 10473 if (hci_big_sync_for_handle(big_handle) != NULL){ 10474 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10475 } 10476 if (num_bis == 0){ 10477 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10478 } 10479 if (num_bis > MAX_NR_BIS){ 10480 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10481 } 10482 10483 // reserve ISO Streams 10484 uint8_t i; 10485 uint8_t status = ERROR_CODE_SUCCESS; 10486 for (i=0;i<num_bis;i++){ 10487 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10488 if (iso_stream == NULL) { 10489 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10490 break; 10491 } 10492 } 10493 10494 // free structs on error 10495 if (status != ERROR_CODE_SUCCESS){ 10496 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10497 } 10498 10499 return status; 10500 } 10501 10502 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10503 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10504 if (status != ERROR_CODE_SUCCESS){ 10505 return status; 10506 } 10507 10508 le_audio_big_t * big = storage; 10509 big->big_handle = big_params->big_handle; 10510 big->params = big_params; 10511 big->state = LE_AUDIO_BIG_STATE_CREATE; 10512 big->num_bis = big_params->num_bis; 10513 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10514 10515 hci_run(); 10516 10517 return ERROR_CODE_SUCCESS; 10518 } 10519 10520 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10521 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10522 if (status != ERROR_CODE_SUCCESS){ 10523 return status; 10524 } 10525 10526 le_audio_big_sync_t * big_sync = storage; 10527 big_sync->big_handle = big_sync_params->big_handle; 10528 big_sync->params = big_sync_params; 10529 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10530 big_sync->num_bis = big_sync_params->num_bis; 10531 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10532 10533 hci_run(); 10534 10535 return ERROR_CODE_SUCCESS; 10536 } 10537 10538 uint8_t gap_big_terminate(uint8_t big_handle){ 10539 le_audio_big_t * big = hci_big_for_handle(big_handle); 10540 if (big == NULL){ 10541 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10542 } 10543 switch (big->state){ 10544 case LE_AUDIO_BIG_STATE_CREATE: 10545 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10546 hci_emit_big_terminated(big); 10547 break; 10548 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10549 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10550 break; 10551 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10552 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10553 case LE_AUDIO_BIG_STATE_ACTIVE: 10554 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10555 hci_run(); 10556 break; 10557 default: 10558 return ERROR_CODE_COMMAND_DISALLOWED; 10559 } 10560 return ERROR_CODE_SUCCESS; 10561 } 10562 10563 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10564 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10565 if (big_sync == NULL){ 10566 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10567 } 10568 switch (big_sync->state){ 10569 case LE_AUDIO_BIG_STATE_CREATE: 10570 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10571 hci_emit_big_sync_stopped(big_handle); 10572 break; 10573 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10574 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10575 break; 10576 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10577 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10578 case LE_AUDIO_BIG_STATE_ACTIVE: 10579 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10580 hci_run(); 10581 break; 10582 default: 10583 return ERROR_CODE_COMMAND_DISALLOWED; 10584 } 10585 return ERROR_CODE_SUCCESS; 10586 } 10587 10588 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10589 le_audio_big_t * big = hci_big_for_handle(big_handle); 10590 if (big == NULL){ 10591 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10592 } 10593 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10594 return ERROR_CODE_COMMAND_DISALLOWED; 10595 } 10596 big->can_send_now_requested = true; 10597 hci_iso_notify_can_send_now(); 10598 return ERROR_CODE_SUCCESS; 10599 } 10600 10601 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10602 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10603 if (iso_stream == NULL){ 10604 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10605 } 10606 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10607 return ERROR_CODE_COMMAND_DISALLOWED; 10608 } 10609 iso_stream->can_send_now_requested = true; 10610 hci_iso_notify_can_send_now(); 10611 return ERROR_CODE_SUCCESS; 10612 } 10613 10614 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10615 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10616 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10617 } 10618 if (cig_params->num_cis == 0){ 10619 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10620 } 10621 if (cig_params->num_cis > MAX_NR_CIS){ 10622 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10623 } 10624 10625 // reserve ISO Streams 10626 uint8_t i; 10627 uint8_t status = ERROR_CODE_SUCCESS; 10628 for (i=0;i<cig_params->num_cis;i++){ 10629 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10630 if (iso_stream == NULL) { 10631 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10632 break; 10633 } 10634 } 10635 10636 // free structs on error 10637 if (status != ERROR_CODE_SUCCESS){ 10638 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10639 return status; 10640 } 10641 10642 le_audio_cig_t * cig = storage; 10643 cig->cig_id = cig_params->cig_id; 10644 cig->num_cis = cig_params->num_cis; 10645 cig->params = cig_params; 10646 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10647 for (i=0;i<cig->num_cis;i++){ 10648 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10649 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10650 cig->cis_setup_active[i] = false; 10651 cig->cis_established[i] = false; 10652 } 10653 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10654 10655 hci_run(); 10656 10657 return ERROR_CODE_SUCCESS; 10658 } 10659 10660 uint8_t gap_cig_remove(uint8_t cig_id){ 10661 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10662 if (cig == NULL){ 10663 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10664 } 10665 10666 // close active CIS 10667 uint8_t i; 10668 for (i=0;i<cig->num_cis;i++){ 10669 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10670 if (stream != NULL){ 10671 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10672 } 10673 } 10674 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10675 10676 hci_run(); 10677 10678 return ERROR_CODE_SUCCESS; 10679 } 10680 10681 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10682 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10683 if (cig == NULL){ 10684 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10685 } 10686 10687 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10688 return ERROR_CODE_COMMAND_DISALLOWED; 10689 } 10690 10691 // store ACL Connection Handles 10692 uint8_t i; 10693 for (i=0;i<cig->num_cis;i++){ 10694 // check that all con handles exist and store 10695 hci_con_handle_t cis_handle = cis_con_handles[i]; 10696 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10697 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10698 } 10699 uint8_t j; 10700 bool found = false; 10701 for (j=0;j<cig->num_cis;j++){ 10702 if (cig->cis_con_handles[j] == cis_handle){ 10703 cig->acl_con_handles[j] = acl_con_handles[j]; 10704 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10705 btstack_assert(iso_stream != NULL); 10706 iso_stream->acl_handle = acl_con_handles[j]; 10707 found = true; 10708 break; 10709 } 10710 } 10711 if (!found){ 10712 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10713 } 10714 } 10715 10716 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10717 hci_run(); 10718 10719 return ERROR_CODE_SUCCESS; 10720 } 10721 10722 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10723 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10724 if (iso_stream == NULL){ 10725 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10726 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10727 } 10728 10729 // set next state and continue 10730 iso_stream->state = state; 10731 hci_run(); 10732 return ERROR_CODE_SUCCESS; 10733 } 10734 10735 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10736 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10737 } 10738 10739 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10740 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10741 } 10742 10743 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10744 10745 // GAP Privacy - notify clients before random address update 10746 10747 static bool gap_privacy_client_all_ready(void){ 10748 // check if all ready 10749 btstack_linked_list_iterator_t it; 10750 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10751 while (btstack_linked_list_iterator_has_next(&it)) { 10752 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10753 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10754 return false; 10755 } 10756 } 10757 return true; 10758 } 10759 10760 static void gap_privacy_clients_handle_ready(void){ 10761 // clear 'ready' 10762 btstack_linked_list_iterator_t it; 10763 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10764 while (btstack_linked_list_iterator_has_next(&it)) { 10765 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10766 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10767 } 10768 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10769 hci_run(); 10770 } 10771 10772 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10773 btstack_linked_list_iterator_t it; 10774 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10775 while (btstack_linked_list_iterator_has_next(&it)) { 10776 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10777 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10778 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10779 (*client->callback)(client, new_random_address); 10780 } 10781 } 10782 if (gap_privacy_client_all_ready()){ 10783 gap_privacy_clients_handle_ready(); 10784 } 10785 } 10786 10787 void gap_privacy_client_register(gap_privacy_client_t * client){ 10788 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10789 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10790 } 10791 10792 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10793 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10794 if (gap_privacy_client_all_ready()){ 10795 gap_privacy_clients_handle_ready(); 10796 } 10797 } 10798 10799 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10800 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10801 } 10802 10803 #endif /* ENABLE_BLE */ 10804 10805 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10806 void hci_setup_test_connections_fuzz(void){ 10807 hci_connection_t * conn; 10808 10809 // default address: 66:55:44:33:00:01 10810 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10811 10812 // setup Controller info 10813 hci_stack->num_cmd_packets = 255; 10814 hci_stack->acl_packets_total_num = 255; 10815 10816 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10817 addr[5] = 0x01; 10818 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10819 conn->con_handle = addr[5]; 10820 conn->state = RECEIVED_CONNECTION_REQUEST; 10821 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10822 10823 // setup incoming Classic SCO connection with con handle 0x0002 10824 addr[5] = 0x02; 10825 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10826 conn->con_handle = addr[5]; 10827 conn->state = RECEIVED_CONNECTION_REQUEST; 10828 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10829 10830 // setup ready Classic ACL connection with con handle 0x0003 10831 addr[5] = 0x03; 10832 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10833 conn->con_handle = addr[5]; 10834 conn->state = OPEN; 10835 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10836 10837 // setup ready Classic SCO connection with con handle 0x0004 10838 addr[5] = 0x04; 10839 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10840 conn->con_handle = addr[5]; 10841 conn->state = OPEN; 10842 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10843 10844 // setup ready LE ACL connection with con handle 0x005 and public address 10845 addr[5] = 0x05; 10846 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10847 conn->con_handle = addr[5]; 10848 conn->state = OPEN; 10849 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10850 conn->sm_connection.sm_connection_encrypted = 1; 10851 } 10852 10853 void hci_free_connections_fuzz(void){ 10854 btstack_linked_list_iterator_t it; 10855 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10856 while (btstack_linked_list_iterator_has_next(&it)){ 10857 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10858 btstack_linked_list_iterator_remove(&it); 10859 btstack_memory_hci_connection_free(con); 10860 } 10861 } 10862 void hci_simulate_working_fuzz(void){ 10863 hci_stack->le_scanning_param_update = false; 10864 hci_init_done(); 10865 hci_stack->num_cmd_packets = 255; 10866 } 10867 #endif 10868