1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 6) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES , 27, 5) \ 171 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 172 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 173 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 175 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 176 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 178 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 179 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 180 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 181 182 // enumerate supported commands 183 #define X(name, offset, bit) name, 184 enum { 185 SUPPORTED_HCI_COMMANDS 186 SUPPORTED_HCI_COMMANDS_COUNT 187 }; 188 #undef X 189 190 // prototypes 191 #ifdef ENABLE_CLASSIC 192 static void hci_update_scan_enable(void); 193 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 194 static int hci_local_ssp_activated(void); 195 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 196 static bool hci_ssp_supported(hci_connection_t * connection); 197 static void hci_notify_if_sco_can_send_now(void); 198 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 199 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 200 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 201 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 202 static void hci_connection_timestamp(hci_connection_t *connection); 203 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 204 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 205 #endif 206 207 static int hci_power_control_on(void); 208 static void hci_power_control_off(void); 209 static void hci_state_reset(void); 210 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 211 static void hci_emit_transport_packet_sent(void); 212 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 213 static void hci_emit_nr_connections_changed(void); 214 static void hci_emit_hci_open_failed(void); 215 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 216 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 217 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump); 218 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 219 static void hci_run(void); 220 static bool hci_is_le_connection(hci_connection_t * connection); 221 static uint8_t hci_send_prepared_cmd_packet(void); 222 223 #ifdef ENABLE_CLASSIC 224 static int hci_have_usb_transport(void); 225 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 226 #endif 227 228 #ifdef ENABLE_BLE 229 static bool hci_run_general_gap_le(void); 230 static void gap_privacy_clients_handle_ready(void); 231 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 232 #ifdef ENABLE_LE_CENTRAL 233 // called from test/ble_client/advertising_data_parser.c 234 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 235 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 236 static hci_connection_t * gap_get_outgoing_le_connection(void); 237 static void hci_le_scan_stop(void); 238 #endif 239 #ifdef ENABLE_LE_PERIPHERAL 240 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 241 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 242 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len); 243 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size); 244 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 245 #endif /* ENABLE_LE_PERIPHERAL */ 246 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 247 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 248 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 249 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 250 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 251 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 252 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 253 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 254 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 255 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 256 static void hci_iso_notify_can_send_now(void); 257 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 258 static void hci_emit_big_terminated(const le_audio_big_t * big); 259 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 260 static void hci_emit_big_sync_stopped(uint8_t big_handle); 261 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 262 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 263 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 264 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 265 #endif /* ENABLE_BLE */ 266 267 // the STACK is here 268 #ifndef HAVE_MALLOC 269 static hci_stack_t hci_stack_static; 270 #endif 271 static hci_stack_t * hci_stack = NULL; 272 273 #ifdef ENABLE_CLASSIC 274 // default name 275 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 276 277 // test helper 278 static uint8_t disable_l2cap_timeouts = 0; 279 #endif 280 281 // reset connection state on create and on reconnect 282 // don't overwrite addr, con handle, role 283 static void hci_connection_init(hci_connection_t * conn){ 284 conn->authentication_flags = AUTH_FLAG_NONE; 285 conn->bonding_flags = 0; 286 conn->requested_security_level = LEVEL_0; 287 conn->link_key_type = INVALID_LINK_KEY; 288 #ifdef ENABLE_CLASSIC 289 conn->request_role = HCI_ROLE_INVALID; 290 conn->sniff_subrating_max_latency = 0xffff; 291 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 292 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 293 btstack_run_loop_set_timer_context(&conn->timeout, conn); 294 hci_connection_timestamp(conn); 295 #endif 296 conn->acl_recombination_length = 0; 297 conn->acl_recombination_pos = 0; 298 conn->num_packets_sent = 0; 299 300 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 301 #ifdef ENABLE_BLE 302 conn->le_phy_update_all_phys = 0xff; 303 #endif 304 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 305 conn->le_max_tx_octets = 27; 306 #endif 307 #ifdef ENABLE_CLASSIC_PAIRING_OOB 308 conn->classic_oob_c_192 = NULL; 309 conn->classic_oob_r_192 = NULL; 310 conn->classic_oob_c_256 = NULL; 311 conn->classic_oob_r_256 = NULL; 312 #endif 313 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 314 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 315 conn->le_past_advertising_handle = 0xff; 316 #endif 317 } 318 319 /** 320 * create connection for given address 321 * 322 * @return connection OR NULL, if no memory left 323 */ 324 static hci_connection_t * 325 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 326 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 327 328 hci_connection_t * conn = btstack_memory_hci_connection_get(); 329 if (!conn) return NULL; 330 hci_connection_init(conn); 331 332 bd_addr_copy(conn->address, addr); 333 conn->address_type = addr_type; 334 conn->con_handle = HCI_CON_HANDLE_INVALID; 335 conn->role = role; 336 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 337 338 return conn; 339 } 340 341 342 /** 343 * get le connection parameter range 344 * 345 * @return le connection parameter range struct 346 */ 347 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 348 *range = hci_stack->le_connection_parameter_range; 349 } 350 351 /** 352 * set le connection parameter range 353 * 354 */ 355 356 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 357 hci_stack->le_connection_parameter_range = *range; 358 } 359 360 /** 361 * @brief Test if connection parameters are inside in existing rage 362 * @param conn_interval_min (unit: 1.25ms) 363 * @param conn_interval_max (unit: 1.25ms) 364 * @param conn_latency 365 * @param supervision_timeout (unit: 10ms) 366 * @return 1 if included 367 */ 368 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 369 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 370 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 371 372 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 373 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 374 375 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 376 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 377 378 return 1; 379 } 380 381 /** 382 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 383 * @note: default: 1 384 * @param max_peripheral_connections 385 */ 386 #ifdef ENABLE_LE_PERIPHERAL 387 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 388 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 389 } 390 #endif 391 392 /** 393 * get hci connections iterator 394 * 395 * @return hci connections iterator 396 */ 397 398 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 399 btstack_linked_list_iterator_init(it, &hci_stack->connections); 400 } 401 402 /** 403 * get connection for a given handle 404 * 405 * @return connection OR NULL, if not found 406 */ 407 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 408 btstack_linked_list_iterator_t it; 409 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 410 while (btstack_linked_list_iterator_has_next(&it)){ 411 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 412 if ( item->con_handle == con_handle ) { 413 return item; 414 } 415 } 416 return NULL; 417 } 418 419 /** 420 * get connection for given address 421 * 422 * @return connection OR NULL, if not found 423 */ 424 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 425 btstack_linked_list_iterator_t it; 426 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 427 while (btstack_linked_list_iterator_has_next(&it)){ 428 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 429 if (connection->address_type != addr_type) continue; 430 if (memcmp(addr, connection->address, 6) != 0) continue; 431 return connection; 432 } 433 return NULL; 434 } 435 436 #ifdef ENABLE_CLASSIC 437 438 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 439 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 440 } 441 442 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 443 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 444 } 445 446 #ifdef ENABLE_SCO_OVER_HCI 447 static int hci_number_sco_connections(void){ 448 int connections = 0; 449 btstack_linked_list_iterator_t it; 450 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 451 while (btstack_linked_list_iterator_has_next(&it)){ 452 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 453 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 454 connections++; 455 } 456 return connections; 457 } 458 #endif 459 460 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 461 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 462 #ifdef HAVE_EMBEDDED_TICK 463 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 464 // connections might be timed out 465 hci_emit_l2cap_check_timeout(connection); 466 } 467 #else 468 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 469 // connections might be timed out 470 hci_emit_l2cap_check_timeout(connection); 471 } 472 #endif 473 } 474 475 static void hci_connection_timestamp(hci_connection_t *connection){ 476 #ifdef HAVE_EMBEDDED_TICK 477 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 478 #else 479 connection->timestamp = btstack_run_loop_get_time_ms(); 480 #endif 481 } 482 483 /** 484 * add authentication flags and reset timer 485 * @note: assumes classic connection 486 * @note: bd_addr is passed in as 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 return baud_rate; 1815 } 1816 1817 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1818 UNUSED(ds); 1819 1820 switch (hci_stack->substate){ 1821 case HCI_INIT_W4_SEND_RESET: 1822 log_info("Resend HCI Reset"); 1823 hci_stack->substate = HCI_INIT_SEND_RESET; 1824 hci_stack->num_cmd_packets = 1; 1825 hci_run(); 1826 break; 1827 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1828 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1829 if (hci_stack->hci_transport->reset_link){ 1830 hci_stack->hci_transport->reset_link(); 1831 } 1832 1833 /* fall through */ 1834 1835 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1836 log_info("Resend HCI Reset - CSR Warm Boot"); 1837 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1838 hci_stack->num_cmd_packets = 1; 1839 hci_run(); 1840 break; 1841 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1842 if (hci_stack->hci_transport->set_baudrate){ 1843 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1844 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1845 hci_stack->hci_transport->set_baudrate(baud_rate); 1846 } 1847 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1848 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1849 if (hci_stack->hci_transport->reset_link){ 1850 log_info("Link Reset"); 1851 hci_stack->hci_transport->reset_link(); 1852 } 1853 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1854 hci_run(); 1855 } 1856 break; 1857 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1858 // otherwise continue 1859 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1860 hci_send_cmd(&hci_read_local_supported_commands); 1861 break; 1862 default: 1863 break; 1864 } 1865 } 1866 #endif 1867 1868 static void hci_initializing_next_state(void){ 1869 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1870 } 1871 1872 static void hci_init_done(void){ 1873 // done. tell the app 1874 log_info("hci_init_done -> HCI_STATE_WORKING"); 1875 hci_stack->state = HCI_STATE_WORKING; 1876 hci_emit_state(); 1877 } 1878 1879 // assumption: hci_can_send_command_packet_now() == true 1880 static void hci_initializing_run(void){ 1881 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1882 1883 if (!hci_can_send_command_packet_now()) return; 1884 1885 #ifndef HAVE_HOST_CONTROLLER_API 1886 bool need_baud_change = hci_stack->config 1887 && hci_stack->chipset 1888 && hci_stack->chipset->set_baudrate_command 1889 && hci_stack->hci_transport->set_baudrate 1890 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1891 #endif 1892 1893 switch (hci_stack->substate){ 1894 case HCI_INIT_SEND_RESET: 1895 hci_state_reset(); 1896 1897 #ifndef HAVE_HOST_CONTROLLER_API 1898 // prepare reset if command complete not received in 100ms 1899 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1900 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1901 btstack_run_loop_add_timer(&hci_stack->timeout); 1902 #endif 1903 // send command 1904 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1905 hci_send_cmd(&hci_reset); 1906 break; 1907 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1908 hci_send_cmd(&hci_read_local_version_information); 1909 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1910 break; 1911 1912 #ifndef HAVE_HOST_CONTROLLER_API 1913 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1914 hci_state_reset(); 1915 // prepare reset if command complete not received in 100ms 1916 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1917 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1918 btstack_run_loop_add_timer(&hci_stack->timeout); 1919 // send command 1920 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1921 hci_send_cmd(&hci_reset); 1922 break; 1923 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1924 hci_state_reset(); 1925 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1926 hci_send_cmd(&hci_reset); 1927 break; 1928 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1929 hci_reserve_packet_buffer(); 1930 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1931 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1932 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1933 hci_send_prepared_cmd_packet(); 1934 break; 1935 } 1936 case HCI_INIT_SET_BD_ADDR: 1937 hci_reserve_packet_buffer(); 1938 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1939 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1940 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1941 hci_send_prepared_cmd_packet(); 1942 break; 1943 case HCI_INIT_SEND_READ_LOCAL_NAME: 1944 #ifdef ENABLE_CLASSIC 1945 hci_send_cmd(&hci_read_local_name); 1946 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1947 break; 1948 #endif 1949 /* fall through */ 1950 1951 case HCI_INIT_SEND_BAUD_CHANGE: 1952 if (need_baud_change) { 1953 hci_reserve_packet_buffer(); 1954 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1955 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1956 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1957 hci_send_prepared_cmd_packet(); 1958 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1959 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1960 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1961 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1962 btstack_run_loop_add_timer(&hci_stack->timeout); 1963 } 1964 break; 1965 } 1966 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1967 1968 /* fall through */ 1969 1970 case HCI_INIT_CUSTOM_INIT: 1971 case HCI_INIT_CUSTOM_PRE_INIT: 1972 // Custom initialization 1973 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1974 hci_reserve_packet_buffer(); 1975 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1976 bool send_cmd = false; 1977 switch (hci_stack->chipset_result){ 1978 case BTSTACK_CHIPSET_VALID_COMMAND: 1979 send_cmd = true; 1980 switch (hci_stack->substate){ 1981 case HCI_INIT_CUSTOM_INIT: 1982 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1983 break; 1984 case HCI_INIT_CUSTOM_PRE_INIT: 1985 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1986 break; 1987 default: 1988 btstack_assert(false); 1989 break; 1990 } 1991 break; 1992 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1993 send_cmd = true; 1994 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1995 log_info("CSR Warm Boot"); 1996 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1997 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1998 btstack_run_loop_add_timer(&hci_stack->timeout); 1999 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2000 && hci_stack->config 2001 && hci_stack->chipset 2002 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2003 && hci_stack->hci_transport->set_baudrate 2004 && hci_transport_uart_get_main_baud_rate()){ 2005 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2006 } else { 2007 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2008 } 2009 break; 2010 default: 2011 break; 2012 } 2013 2014 if (send_cmd){ 2015 hci_send_prepared_cmd_packet(); 2016 break; 2017 } else { 2018 hci_release_packet_buffer(); 2019 } 2020 log_info("Init script done"); 2021 2022 // Custom Pre-Init complete, start regular init with HCI Reset 2023 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2024 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2025 hci_send_cmd(&hci_reset); 2026 break; 2027 } 2028 2029 // Init script download on Broadcom chipsets causes: 2030 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2031 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2032 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2033 2034 // - baud rate to reset, restore UART baud rate if needed 2035 if (need_baud_change) { 2036 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2037 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2038 hci_stack->hci_transport->set_baudrate(baud_rate); 2039 } 2040 2041 uint16_t bcm_delay_ms = 300; 2042 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2043 // -> Work around: wait here. 2044 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2045 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2046 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2047 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2048 btstack_run_loop_add_timer(&hci_stack->timeout); 2049 break; 2050 } 2051 } 2052 #endif 2053 /* fall through */ 2054 2055 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2056 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2057 hci_send_cmd(&hci_read_local_supported_commands); 2058 break; 2059 case HCI_INIT_READ_BD_ADDR: 2060 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2061 hci_send_cmd(&hci_read_bd_addr); 2062 break; 2063 case HCI_INIT_READ_BUFFER_SIZE: 2064 // only read buffer size if supported 2065 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2066 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2067 hci_send_cmd(&hci_read_buffer_size); 2068 break; 2069 } 2070 2071 /* fall through */ 2072 2073 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2074 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2075 hci_send_cmd(&hci_read_local_supported_features); 2076 break; 2077 2078 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2079 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2080 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2081 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2082 break; 2083 case HCI_INIT_HOST_BUFFER_SIZE: 2084 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2085 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2086 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2087 break; 2088 #endif 2089 2090 case HCI_INIT_SET_EVENT_MASK: 2091 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2092 if (hci_le_supported()){ 2093 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2094 } else { 2095 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2096 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2097 } 2098 break; 2099 2100 case HCI_INIT_SET_EVENT_MASK_2: 2101 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2102 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2103 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2104 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2105 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2106 // Encryption Change Event v2 - bit 25 2107 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2108 break; 2109 } 2110 2111 #ifdef ENABLE_CLASSIC 2112 /* fall through */ 2113 2114 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2115 if (hci_classic_supported() && gap_ssp_supported()){ 2116 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2117 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2118 break; 2119 } 2120 2121 /* fall through */ 2122 2123 case HCI_INIT_WRITE_INQUIRY_MODE: 2124 if (hci_classic_supported()){ 2125 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2126 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2127 break; 2128 } 2129 2130 /* fall through */ 2131 2132 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2133 // skip write secure connections host support if not supported or disabled 2134 if (hci_classic_supported() && hci_stack->secure_connections_enable 2135 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2136 hci_stack->secure_connections_active = true; 2137 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2138 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2139 break; 2140 } 2141 2142 /* fall through */ 2143 2144 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2145 // skip set min encryption key size 2146 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2147 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2148 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2149 break; 2150 } 2151 2152 #ifdef ENABLE_SCO_OVER_HCI 2153 /* fall through */ 2154 2155 // only sent if ENABLE_SCO_OVER_HCI is defined 2156 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2157 // skip write synchronous flow control if not supported 2158 if (hci_classic_supported() 2159 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2160 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2161 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2162 break; 2163 } 2164 /* fall through */ 2165 2166 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2167 // skip write default erroneous data reporting if not supported 2168 if (hci_classic_supported() 2169 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2170 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2171 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2172 break; 2173 } 2174 #endif 2175 2176 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2177 /* fall through */ 2178 2179 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2180 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2181 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2182 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2183 #ifdef ENABLE_SCO_OVER_HCI 2184 log_info("BCM: Route SCO data via HCI transport"); 2185 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2186 #endif 2187 #ifdef ENABLE_SCO_OVER_PCM 2188 log_info("BCM: Route SCO data via PCM interface"); 2189 #ifdef ENABLE_BCM_PCM_WBS 2190 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2191 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2192 #else 2193 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2194 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2195 #endif 2196 #endif 2197 break; 2198 } 2199 #endif 2200 2201 #ifdef ENABLE_SCO_OVER_PCM 2202 /* fall through */ 2203 2204 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2205 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2206 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2207 log_info("BCM: Config PCM interface for I2S"); 2208 #ifdef ENABLE_BCM_PCM_WBS 2209 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2210 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2211 #else 2212 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2213 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2214 #endif 2215 break; 2216 } 2217 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2218 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2219 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2220 log_info("BCM: Config PCM Data format"); 2221 // msb first, fill bits 0, left justified 2222 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2223 break; 2224 } 2225 #ifdef HAVE_BCM_PCM2 2226 case HCI_INIT_BCM_PCM2_SETUP: 2227 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2228 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2229 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2230 uint32_t pcm_clock_freq; 2231 uint8_t ch_0_period; 2232 #ifdef ENABLE_BCM_PCM_WBS 2233 // 512 kHz, resample 8 kHz to 16 khz 2234 pcm_clock_freq = 512000; 2235 ch_0_period = 1; 2236 #else 2237 // 256 khz, 8 khz output 2238 pcm_clock_freq = 256000; 2239 ch_0_period = 0; 2240 #endif 2241 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2242 hci_send_cmd(&hci_bcm_pcm2_setup, 2243 0x00, // Action = Write 2244 0x00, // Test_Options = None 2245 op_mode, // Op_Mode 2246 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2247 pcm_clock_freq, // PCM_Clock_Freq 2248 0x01, // Sync_Signal_Width 2249 0x0F, // Slot_Width 2250 0x01, // NumberOfSlots 2251 0x00, // Bank_0_Fill_Mode = 0s 2252 0x00, // Bank_0_Number_of_Fill_Bits 2253 0x00, // Bank_0_Programmable_Fill_Data 2254 0x00, // Bank_1_Fill_Mode = 0s 2255 0x00, // Bank_1_Number_of_Fill_Bits 2256 0x00, // Bank_1_Programmable_Fill_Data 2257 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2258 0x00, // Ch_0_Slot_Number 2259 0x01, // Ch_1_Slot_Number 2260 0x02, // Ch_2_Slot_Number 2261 0x03, // Ch_3_Slot_Number 2262 0x04, // Ch_4_Slot_Number 2263 ch_0_period, // Ch_0_Period 2264 0x00, // Ch_1_Period 2265 0x00 // Ch_2_Period 2266 ); 2267 break; 2268 } 2269 #endif 2270 #endif /* ENABLE_SCO_OVER_PCM */ 2271 #endif /* ENABLE_CLASSIC */ 2272 2273 #ifdef ENABLE_BLE 2274 /* fall through */ 2275 2276 // LE INIT 2277 case HCI_INIT_LE_READ_BUFFER_SIZE: 2278 if (hci_le_supported()){ 2279 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2280 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2281 hci_send_cmd(&hci_le_read_buffer_size_v2); 2282 } else { 2283 hci_send_cmd(&hci_le_read_buffer_size); 2284 } 2285 break; 2286 } 2287 2288 /* fall through */ 2289 2290 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2291 // skip write le host if not supported (e.g. on LE only EM9301) 2292 if (hci_le_supported() 2293 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2294 // LE Supported Host = 1, Simultaneous Host = 0 2295 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2296 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2297 break; 2298 } 2299 2300 /* fall through */ 2301 2302 case HCI_INIT_LE_SET_EVENT_MASK: 2303 if (hci_le_supported()){ 2304 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2305 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2306 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2307 #else 2308 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2309 #endif 2310 break; 2311 } 2312 #endif 2313 2314 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2315 /* fall through */ 2316 2317 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2318 if (hci_le_supported() 2319 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2320 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2321 hci_send_cmd(&hci_le_read_maximum_data_length); 2322 break; 2323 } 2324 2325 /* fall through */ 2326 2327 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2328 if (hci_le_supported() 2329 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2330 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2331 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2332 break; 2333 } 2334 #endif 2335 2336 #ifdef ENABLE_LE_CENTRAL 2337 /* fall through */ 2338 2339 case HCI_INIT_READ_WHITE_LIST_SIZE: 2340 if (hci_le_supported()){ 2341 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2342 hci_send_cmd(&hci_le_read_white_list_size); 2343 break; 2344 } 2345 2346 #endif 2347 2348 #ifdef ENABLE_LE_PERIPHERAL 2349 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2350 /* fall through */ 2351 2352 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2353 if (hci_le_extended_advertising_supported()){ 2354 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2355 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2356 break; 2357 } 2358 #endif 2359 #endif 2360 /* fall through */ 2361 2362 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2363 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2364 if (hci_le_supported()) { 2365 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2366 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2367 break; 2368 } 2369 #endif 2370 2371 /* fall through */ 2372 2373 case HCI_INIT_DONE: 2374 hci_stack->substate = HCI_INIT_DONE; 2375 // main init sequence complete 2376 #ifdef ENABLE_CLASSIC 2377 // check if initial Classic GAP Tasks are completed 2378 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2379 hci_run_gap_tasks_classic(); 2380 break; 2381 } 2382 #endif 2383 #ifdef ENABLE_BLE 2384 #ifdef ENABLE_LE_CENTRAL 2385 // check if initial LE GAP Tasks are completed 2386 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2387 hci_run_general_gap_le(); 2388 break; 2389 } 2390 #endif 2391 #endif 2392 hci_init_done(); 2393 break; 2394 2395 default: 2396 return; 2397 } 2398 } 2399 2400 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2401 bool command_completed = false; 2402 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2403 uint16_t opcode = little_endian_read_16(packet,3); 2404 if (opcode == hci_stack->last_cmd_opcode){ 2405 command_completed = true; 2406 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2407 } else { 2408 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2409 } 2410 } 2411 2412 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2413 uint8_t status = packet[2]; 2414 uint16_t opcode = little_endian_read_16(packet,4); 2415 if (opcode == hci_stack->last_cmd_opcode){ 2416 if (status){ 2417 command_completed = true; 2418 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2419 } else { 2420 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2421 } 2422 } else { 2423 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2424 } 2425 } 2426 #ifndef HAVE_HOST_CONTROLLER_API 2427 // Vendor == CSR 2428 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2429 // TODO: track actual command 2430 command_completed = true; 2431 } 2432 2433 // Vendor == Toshiba 2434 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2435 // TODO: track actual command 2436 command_completed = true; 2437 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2438 hci_stack->num_cmd_packets = 1; 2439 } 2440 #endif 2441 2442 return command_completed; 2443 } 2444 2445 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2446 2447 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2448 2449 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2450 2451 #ifndef HAVE_HOST_CONTROLLER_API 2452 2453 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2454 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2455 // 2456 // HCI Reset 2457 // Timeout 100 ms 2458 // HCI Reset 2459 // Command Complete Reset 2460 // HCI Read Local Version Information 2461 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2462 // hang... 2463 // 2464 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2465 if (!command_completed 2466 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2467 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2468 2469 uint16_t opcode = little_endian_read_16(packet,3); 2470 if (opcode == hci_reset.opcode){ 2471 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2472 return; 2473 } 2474 } 2475 2476 // CSR & H5 2477 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2478 if (!command_completed 2479 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2480 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2481 2482 uint16_t opcode = little_endian_read_16(packet,3); 2483 if (opcode == hci_reset.opcode){ 2484 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2485 return; 2486 } 2487 } 2488 2489 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2490 // fix: Correct substate and behave as command below 2491 if (command_completed){ 2492 switch (hci_stack->substate){ 2493 case HCI_INIT_SEND_RESET: 2494 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2495 break; 2496 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2497 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2498 break; 2499 default: 2500 break; 2501 } 2502 } 2503 2504 #endif 2505 2506 if (!command_completed) return; 2507 2508 bool need_baud_change = false; 2509 bool need_addr_change = false; 2510 2511 #ifndef HAVE_HOST_CONTROLLER_API 2512 need_baud_change = hci_stack->config 2513 && hci_stack->chipset 2514 && hci_stack->chipset->set_baudrate_command 2515 && hci_stack->hci_transport->set_baudrate 2516 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2517 2518 need_addr_change = hci_stack->custom_bd_addr_set 2519 && hci_stack->chipset 2520 && hci_stack->chipset->set_bd_addr_command; 2521 #endif 2522 2523 switch(hci_stack->substate){ 2524 2525 #ifndef HAVE_HOST_CONTROLLER_API 2526 case HCI_INIT_SEND_RESET: 2527 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2528 // fix: just correct substate and behave as command below 2529 2530 /* fall through */ 2531 #endif 2532 2533 case HCI_INIT_W4_SEND_RESET: 2534 btstack_run_loop_remove_timer(&hci_stack->timeout); 2535 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2536 return; 2537 2538 #ifndef HAVE_HOST_CONTROLLER_API 2539 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2540 // for STLC2500D, baud rate change already happened. 2541 // for others, baud rate gets changed now 2542 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2543 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2544 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2545 hci_stack->hci_transport->set_baudrate(baud_rate); 2546 } 2547 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2548 return; 2549 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2550 btstack_run_loop_remove_timer(&hci_stack->timeout); 2551 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2552 return; 2553 case HCI_INIT_W4_CUSTOM_INIT: 2554 // repeat custom init 2555 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2556 return; 2557 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2558 // repeat custom init 2559 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2560 return; 2561 #endif 2562 2563 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2564 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2565 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2566 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2567 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2568 return; 2569 } 2570 if (need_addr_change){ 2571 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2572 return; 2573 } 2574 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2575 return; 2576 #ifndef HAVE_HOST_CONTROLLER_API 2577 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2578 if (need_baud_change){ 2579 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2580 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2581 hci_stack->hci_transport->set_baudrate(baud_rate); 2582 } 2583 if (need_addr_change){ 2584 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2585 return; 2586 } 2587 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2588 return; 2589 case HCI_INIT_W4_SET_BD_ADDR: 2590 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2591 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2592 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2593 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2594 return; 2595 } 2596 // skipping st warm boot 2597 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2598 return; 2599 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2600 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2601 return; 2602 #endif 2603 2604 case HCI_INIT_DONE: 2605 // set state if we came here by fall through 2606 hci_stack->substate = HCI_INIT_DONE; 2607 return; 2608 2609 default: 2610 break; 2611 } 2612 hci_initializing_next_state(); 2613 } 2614 2615 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2616 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2617 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2618 // check if we have been aware of the HCI connection 2619 switch (conn->state){ 2620 case SENT_CREATE_CONNECTION: 2621 case RECEIVED_CONNECTION_REQUEST: 2622 case ACCEPTED_CONNECTION_REQUEST: 2623 break; 2624 default: 2625 return; 2626 } 2627 2628 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2629 bd_addr_t bd_address; 2630 (void)memcpy(&bd_address, conn->address, 6); 2631 2632 #ifdef ENABLE_CLASSIC 2633 // cache needed data 2634 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2635 #endif 2636 2637 // connection failed, remove entry 2638 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2639 btstack_memory_hci_connection_free( conn ); 2640 2641 #ifdef ENABLE_CLASSIC 2642 // notify client if dedicated bonding 2643 if (notify_dedicated_bonding_failed){ 2644 log_info("hci notify_dedicated_bonding_failed"); 2645 hci_emit_dedicated_bonding_result(bd_address, status); 2646 } 2647 2648 // if authentication error, also delete link key 2649 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2650 gap_drop_link_key_for_bd_addr(bd_address); 2651 } 2652 #else 2653 UNUSED(status); 2654 #endif 2655 } 2656 2657 #ifdef ENABLE_CLASSIC 2658 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2659 // SSP Controller 2660 if (features[6] & (1 << 3)){ 2661 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2662 } 2663 // eSCO 2664 if (features[3] & (1<<7)){ 2665 conn->remote_supported_features[0] |= 1; 2666 } 2667 // Extended features 2668 if (features[7] & (1<<7)){ 2669 conn->remote_supported_features[0] |= 2; 2670 } 2671 // SCO packet types 2672 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2673 } 2674 2675 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2676 // SSP Host 2677 if (features[0] & (1 << 0)){ 2678 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2679 } 2680 // SC Host 2681 if (features[0] & (1 << 3)){ 2682 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2683 } 2684 } 2685 2686 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2687 // SC Controller 2688 if (features[1] & (1 << 0)){ 2689 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2690 } 2691 } 2692 2693 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2694 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2695 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2696 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2697 if (conn->bonding_flags & BONDING_DEDICATED){ 2698 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2699 } 2700 } 2701 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2702 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2703 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2704 } 2705 2706 #endif 2707 2708 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2709 // handle BT initialization 2710 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2711 hci_initializing_event_handler(packet, size); 2712 } 2713 2714 // help with BT sleep 2715 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2716 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2717 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2718 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2719 hci_initializing_next_state(); 2720 } 2721 } 2722 2723 #ifdef ENABLE_CLASSIC 2724 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2725 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2726 conn->requested_security_level = LEVEL_0; 2727 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2728 hci_emit_security_level(conn->con_handle, security_level); 2729 2730 // dedicated bonding 2731 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2732 conn->bonding_flags &= ~BONDING_DEDICATED; 2733 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2734 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2735 // emit dedicated bonding complete, don't disconnect 2736 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2737 #else 2738 // request disconnect, event is emitted after disconnect 2739 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2740 #endif 2741 } 2742 } 2743 2744 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2745 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2746 conn->encryption_key_size = encryption_key_size; 2747 2748 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2749 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2750 hci_handle_mutual_authentication_completed(conn); 2751 } else { 2752 // otherwise trigger remote feature request and send authentication request 2753 hci_trigger_remote_features_for_connection(conn); 2754 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2755 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2756 } 2757 } 2758 } 2759 #endif 2760 2761 static void hci_store_local_supported_commands(const uint8_t * packet){ 2762 // create mapping table 2763 #define X(name, offset, bit) { offset, bit }, 2764 static struct { 2765 uint8_t byte_offset; 2766 uint8_t bit_position; 2767 } supported_hci_commands_map [] = { 2768 SUPPORTED_HCI_COMMANDS 2769 }; 2770 #undef X 2771 2772 // create names for debug purposes 2773 #ifdef ENABLE_LOG_DEBUG 2774 #define X(name, offset, bit) #name, 2775 static const char * command_names[] = { 2776 SUPPORTED_HCI_COMMANDS 2777 }; 2778 #undef X 2779 #endif 2780 2781 hci_stack->local_supported_commands = 0; 2782 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2783 uint16_t i; 2784 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2785 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2786 #ifdef ENABLE_LOG_DEBUG 2787 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); 2788 #else 2789 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2790 #endif 2791 hci_stack->local_supported_commands |= (1LU << i); 2792 } 2793 } 2794 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2795 } 2796 2797 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2798 UNUSED(size); 2799 2800 uint8_t status = 0; 2801 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2802 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2803 } 2804 uint16_t manufacturer; 2805 #ifdef ENABLE_CLASSIC 2806 hci_connection_t * conn; 2807 #endif 2808 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2809 hci_con_handle_t handle; 2810 #endif 2811 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2812 le_audio_cig_t * cig; 2813 #endif 2814 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2815 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2816 #endif 2817 2818 // get num cmd packets - limit to 1 to reduce complexity 2819 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2820 2821 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2822 switch (opcode){ 2823 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2824 if (status) break; 2825 // terminate, name 248 chars 2826 packet[6+248] = 0; 2827 log_info("local name: %s", &packet[6]); 2828 break; 2829 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2830 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2831 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2832 uint16_t acl_len = little_endian_read_16(packet, 6); 2833 uint16_t sco_len = packet[8]; 2834 2835 // determine usable ACL/SCO payload size 2836 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2837 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2838 2839 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2840 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2841 2842 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2843 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2844 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2845 } 2846 break; 2847 case HCI_OPCODE_HCI_READ_RSSI: 2848 if (status == ERROR_CODE_SUCCESS){ 2849 uint8_t event[5]; 2850 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2851 event[1] = 3; 2852 (void)memcpy(&event[2], &packet[6], 3); 2853 hci_emit_btstack_event(event, sizeof(event), 1); 2854 } 2855 break; 2856 #ifdef ENABLE_BLE 2857 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2858 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2859 hci_stack->le_iso_packets_total_num = packet[11]; 2860 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2861 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2862 2863 /* fall through */ 2864 2865 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2866 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2867 hci_stack->le_acl_packets_total_num = packet[8]; 2868 // determine usable ACL payload size 2869 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2870 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2871 } 2872 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); 2873 break; 2874 #endif 2875 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2876 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2877 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2878 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2879 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); 2880 break; 2881 #endif 2882 #ifdef ENABLE_LE_CENTRAL 2883 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2884 hci_stack->le_whitelist_capacity = packet[6]; 2885 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2886 break; 2887 #endif 2888 #ifdef ENABLE_LE_PERIPHERAL 2889 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2890 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2891 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2892 break; 2893 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2894 if (hci_stack->le_advertising_set_in_current_command != 0) { 2895 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2896 hci_stack->le_advertising_set_in_current_command = 0; 2897 if (advertising_set == NULL) break; 2898 uint8_t adv_status = packet[6]; 2899 uint8_t tx_power = packet[7]; 2900 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 }; 2901 if (adv_status == 0){ 2902 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2903 } 2904 hci_emit_btstack_event(event, sizeof(event), 1); 2905 } 2906 break; 2907 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2908 if (hci_stack->le_advertising_set_in_current_command != 0) { 2909 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2910 hci_stack->le_advertising_set_in_current_command = 0; 2911 if (advertising_set == NULL) break; 2912 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2913 if (status == 0){ 2914 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2915 } 2916 hci_emit_btstack_event(event, sizeof(event), 1); 2917 } 2918 break; 2919 #endif 2920 #endif 2921 case HCI_OPCODE_HCI_READ_BD_ADDR: 2922 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2923 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2924 #ifdef ENABLE_CLASSIC 2925 if (hci_stack->link_key_db){ 2926 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2927 } 2928 #endif 2929 break; 2930 #ifdef ENABLE_CLASSIC 2931 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2932 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2933 break; 2934 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2935 if (status == ERROR_CODE_SUCCESS) { 2936 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2937 } else { 2938 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2939 } 2940 break; 2941 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2942 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2943 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2944 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2945 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2946 hci_emit_btstack_event(event, sizeof(event), 1); 2947 } 2948 break; 2949 #endif 2950 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2951 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2952 2953 #ifdef ENABLE_CLASSIC 2954 // determine usable ACL packet types based on host buffer size and supported features 2955 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]); 2956 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2957 // determine usable SCO packet types based on supported features 2958 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2959 &hci_stack->local_supported_features[0]); 2960 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2961 #endif 2962 // Classic/LE 2963 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2964 break; 2965 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2966 manufacturer = little_endian_read_16(packet, 10); 2967 // map Cypress & Infineon to Broadcom 2968 switch (manufacturer){ 2969 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2970 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2971 log_info("Treat Cypress/Infineon as Broadcom"); 2972 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2973 little_endian_store_16(packet, 10, manufacturer); 2974 break; 2975 default: 2976 break; 2977 } 2978 hci_stack->manufacturer = manufacturer; 2979 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2980 break; 2981 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2982 hci_store_local_supported_commands(packet); 2983 break; 2984 #ifdef ENABLE_CLASSIC 2985 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2986 if (status) return; 2987 hci_stack->synchronous_flow_control_enabled = 1; 2988 break; 2989 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2990 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2991 conn = hci_connection_for_handle(handle); 2992 if (conn != NULL) { 2993 uint8_t key_size = 0; 2994 if (status == 0){ 2995 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2996 log_info("Handle %04x key Size: %u", handle, key_size); 2997 } else { 2998 key_size = 1; 2999 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3000 } 3001 hci_handle_read_encryption_key_size_complete(conn, key_size); 3002 } 3003 break; 3004 // assert pairing complete event is emitted. 3005 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3006 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3007 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3008 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3009 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3010 // lookup connection by gap pairing addr 3011 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3012 if (conn == NULL) break; 3013 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3014 break; 3015 3016 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3017 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3018 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3019 uint8_t event[67]; 3020 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3021 event[1] = 65; 3022 (void)memset(&event[2], 0, 65); 3023 if (status == ERROR_CODE_SUCCESS){ 3024 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3025 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3026 event[2] = 3; 3027 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3028 } else { 3029 event[2] = 1; 3030 } 3031 } 3032 hci_emit_btstack_event(event, sizeof(event), 0); 3033 break; 3034 } 3035 3036 // note: only needed if user does not provide OOB data 3037 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3038 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3039 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3040 if (conn == NULL) break; 3041 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3042 break; 3043 #endif 3044 #endif 3045 #ifdef ENABLE_BLE 3046 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3047 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3048 // lookup CIG 3049 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3050 if (cig != NULL){ 3051 uint8_t i = 0; 3052 if (status == ERROR_CODE_SUCCESS){ 3053 // assign CIS handles to pre-allocated CIS 3054 btstack_linked_list_iterator_t it; 3055 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3056 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3057 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3058 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3059 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3060 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3061 iso_stream->cis_handle = cis_handle; 3062 cig->cis_con_handles[i] = cis_handle; 3063 i++; 3064 } 3065 } 3066 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3067 hci_emit_cig_created(cig, status); 3068 } else { 3069 hci_emit_cig_created(cig, status); 3070 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3071 } 3072 } 3073 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3074 break; 3075 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3076 if (status != ERROR_CODE_SUCCESS){ 3077 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3078 } 3079 break; 3080 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3081 if (status != ERROR_CODE_SUCCESS){ 3082 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3083 } 3084 break; 3085 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3086 // lookup BIG by state 3087 btstack_linked_list_iterator_t it; 3088 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3089 while (btstack_linked_list_iterator_has_next(&it)) { 3090 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3091 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3092 if (status == ERROR_CODE_SUCCESS){ 3093 big->state_vars.next_bis++; 3094 if (big->state_vars.next_bis == big->num_bis){ 3095 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3096 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3097 } else { 3098 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3099 } 3100 } else { 3101 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3102 big->state_vars.status = status; 3103 } 3104 return; 3105 } 3106 } 3107 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3108 while (btstack_linked_list_iterator_has_next(&it)) { 3109 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3110 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3111 if (status == ERROR_CODE_SUCCESS){ 3112 big_sync->state_vars.next_bis++; 3113 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3114 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3115 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3116 } else { 3117 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3118 } 3119 } else { 3120 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3121 big_sync->state_vars.status = status; 3122 } 3123 return; 3124 } 3125 } 3126 // Lookup CIS via active group operation 3127 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3128 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3129 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3130 3131 // lookup CIS by state 3132 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3133 while (btstack_linked_list_iterator_has_next(&it)){ 3134 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3135 handle = iso_stream->cis_handle; 3136 bool emit_cis_created = false; 3137 switch (iso_stream->state){ 3138 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3139 if (status != ERROR_CODE_SUCCESS){ 3140 emit_cis_created = true; 3141 break; 3142 } 3143 if (iso_stream->max_sdu_c_to_p > 0){ 3144 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3145 } else { 3146 emit_cis_created = true; 3147 } 3148 break; 3149 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3150 emit_cis_created = true; 3151 break; 3152 default: 3153 break; 3154 } 3155 if (emit_cis_created){ 3156 hci_cis_handle_created(iso_stream, status); 3157 } 3158 } 3159 } else { 3160 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3161 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3162 if (cig != NULL) { 3163 // emit cis created if all ISO Paths have been created 3164 // assume we are central 3165 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3166 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3167 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3168 // if outgoing has been setup, or incoming was setup but outgoing not required 3169 if ((cis_direction == 1) || (outgoing_needed == false)){ 3170 // lookup iso stream by cig/cis 3171 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3172 while (btstack_linked_list_iterator_has_next(&it)) { 3173 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3174 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3175 hci_cis_handle_created(iso_stream, status); 3176 } 3177 } 3178 } 3179 // next state 3180 cig->state_vars.next_cis++; 3181 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3182 } 3183 } 3184 } 3185 break; 3186 } 3187 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3188 // lookup BIG by state 3189 btstack_linked_list_iterator_t it; 3190 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3191 while (btstack_linked_list_iterator_has_next(&it)) { 3192 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3193 uint8_t big_handle = big_sync->big_handle; 3194 switch (big_sync->state){ 3195 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3196 btstack_linked_list_iterator_remove(&it); 3197 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3198 return; 3199 default: 3200 btstack_linked_list_iterator_remove(&it); 3201 hci_emit_big_sync_stopped(big_handle); 3202 return; 3203 } 3204 } 3205 break; 3206 } 3207 #endif 3208 #endif 3209 default: 3210 break; 3211 } 3212 } 3213 3214 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3215 static void 3216 hci_iso_create_big_failed(const le_audio_big_t *big, uint8_t status) { 3217 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 3218 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3219 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3220 hci_emit_big_created(big, status); 3221 } else { 3222 hci_emit_big_terminated(big); 3223 } 3224 } 3225 3226 static void hci_iso_big_sync_failed(const le_audio_big_sync_t *big_sync, uint8_t status) { 3227 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3228 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3229 hci_emit_big_sync_created(big_sync, status); 3230 } else { 3231 hci_emit_big_sync_stopped(big_sync->big_handle); 3232 } 3233 } 3234 #endif 3235 3236 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3237 UNUSED(size); 3238 3239 // get num cmd packets - limit to 1 to reduce complexity 3240 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3241 3242 // get opcode and command status 3243 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3244 3245 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3246 uint8_t status = hci_event_command_status_get_status(packet); 3247 #endif 3248 3249 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3250 bd_addr_type_t addr_type; 3251 bd_addr_t addr; 3252 #endif 3253 3254 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3255 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3256 #endif 3257 3258 switch (opcode){ 3259 #ifdef ENABLE_CLASSIC 3260 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3261 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3262 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3263 #endif 3264 #ifdef ENABLE_LE_CENTRAL 3265 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3266 #endif 3267 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3268 addr_type = hci_stack->outgoing_addr_type; 3269 memcpy(addr, hci_stack->outgoing_addr, 6); 3270 3271 // reset outgoing address info 3272 memset(hci_stack->outgoing_addr, 0, 6); 3273 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3274 3275 // on error 3276 if (status != ERROR_CODE_SUCCESS){ 3277 #ifdef ENABLE_LE_CENTRAL 3278 if (hci_is_le_connection_type(addr_type)){ 3279 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3280 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3281 } 3282 #endif 3283 // error => outgoing connection failed 3284 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3285 if (conn != NULL){ 3286 hci_handle_connection_failed(conn, status); 3287 } 3288 } 3289 break; 3290 #endif 3291 #ifdef ENABLE_CLASSIC 3292 case HCI_OPCODE_HCI_INQUIRY: 3293 if (status == ERROR_CODE_SUCCESS) { 3294 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3295 } else { 3296 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3297 } 3298 break; 3299 #endif 3300 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3301 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3302 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3303 if (status == ERROR_CODE_SUCCESS){ 3304 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3305 } else { 3306 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3307 } 3308 break; 3309 case HCI_OPCODE_HCI_LE_CREATE_BIG: 3310 if (status != ERROR_CODE_SUCCESS){ 3311 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3312 // get current big 3313 le_audio_big_t * big = hci_big_for_handle(hci_stack->iso_active_operation_group_id); 3314 if (big != NULL){ 3315 hci_iso_create_big_failed(big, status); 3316 } 3317 } 3318 break; 3319 case HCI_OPCODE_HCI_LE_BIG_CREATE_SYNC: 3320 if (status != ERROR_CODE_SUCCESS){ 3321 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3322 // get current big sync 3323 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(hci_stack->iso_active_operation_group_id); 3324 if (big_sync != NULL){ 3325 hci_iso_big_sync_failed(big_sync, status); 3326 } 3327 } 3328 break; 3329 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3330 default: 3331 break; 3332 } 3333 } 3334 3335 #ifdef ENABLE_BLE 3336 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3337 gap_event[0] = HCI_EVENT_META_GAP; 3338 gap_event[1] = 36 - 2; 3339 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3340 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3341 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3342 memcpy(&gap_event[3], &hci_event[3], 11); 3343 memset(&gap_event[14], 0, 12); 3344 memcpy(&gap_event[26], &hci_event[14], 7); 3345 memset(&gap_event[33], 0xff, 3); 3346 break; 3347 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3348 memcpy(&gap_event[3], &hci_event[3], 30); 3349 memset(&gap_event[33], 0xff, 3); 3350 break; 3351 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3352 memcpy(&gap_event[3], &hci_event[3], 33); 3353 break; 3354 default: 3355 btstack_unreachable(); 3356 break; 3357 } 3358 } 3359 3360 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3361 bd_addr_t addr; 3362 bd_addr_type_t addr_type; 3363 hci_connection_t * conn; 3364 3365 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3366 uint8_t gap_event[36]; 3367 hci_create_gap_connection_complete_event(hci_event, gap_event); 3368 3369 // read fields 3370 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3371 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3372 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3373 3374 // Connection management 3375 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3376 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3377 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3378 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3379 3380 #ifdef ENABLE_LE_CENTRAL 3381 // handle error: error is reported only to the initiator -> outgoing connection 3382 if (status){ 3383 3384 // handle cancelled outgoing connection 3385 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3386 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3387 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3388 bool connection_was_cancelled = false; 3389 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3390 connection_was_cancelled = true; 3391 // reset state 3392 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3393 // get outgoing connection conn struct for direct connect 3394 conn = gap_get_outgoing_le_connection(); 3395 // prepare restart if still active 3396 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3397 conn->state = SEND_CREATE_CONNECTION; 3398 } 3399 } 3400 3401 // free connection if cancelled by user (request == IDLE) 3402 bool cancelled_by_user = hci_stack->le_connecting_request == LE_CONNECTING_IDLE; 3403 if ((conn != NULL) && cancelled_by_user){ 3404 // remove entry 3405 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3406 btstack_memory_hci_connection_free( conn ); 3407 } 3408 3409 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for: 3410 // - outgoing error not caused by connection cancel 3411 // - connection cancelled by user 3412 // by this, no event is emitted for intermediate connection cancel required filterlist modification 3413 if ((connection_was_cancelled == false) || cancelled_by_user){ 3414 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3415 } 3416 return; 3417 } 3418 #endif 3419 3420 // on success, both hosts receive connection complete event 3421 if (role == HCI_ROLE_MASTER){ 3422 #ifdef ENABLE_LE_CENTRAL 3423 // if we're master, it was an outgoing connection 3424 // note: no hci_connection_t object exists yet for connect with whitelist 3425 3426 // if a identity addresses was used without enhanced connection complete event, 3427 // the connection complete event contains the current random address of the peer device. 3428 // This random address is needed in the case of a re-pairing 3429 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3430 conn = gap_get_outgoing_le_connection(); 3431 // if outgoing connection object is available, check if identity address was used. 3432 // if yes, track resolved random address and provide rpa 3433 // note: we don't update hci le subevent connection complete 3434 if (conn != NULL){ 3435 if (hci_is_le_identity_address_type(conn->address_type)){ 3436 memcpy(&gap_event[20], &gap_event[8], 6); 3437 gap_event[7] = conn->address_type; 3438 reverse_bd_addr(conn->address, &gap_event[8]); 3439 } 3440 } 3441 } 3442 3443 // we're done with it 3444 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3445 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3446 #endif 3447 } else { 3448 #ifdef ENABLE_LE_PERIPHERAL 3449 // if we're slave, it was an incoming connection, advertisements have stopped 3450 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3451 #endif 3452 } 3453 3454 // LE connections are auto-accepted, so just create a connection if there isn't one already 3455 if (!conn){ 3456 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3457 } 3458 3459 // no memory, sorry. 3460 if (!conn){ 3461 return; 3462 } 3463 3464 conn->state = OPEN; 3465 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3466 conn->le_connection_interval = conn_interval; 3467 3468 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3469 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3470 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3471 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3472 } 3473 #endif 3474 3475 #ifdef ENABLE_LE_PERIPHERAL 3476 if (role == HCI_ROLE_SLAVE){ 3477 hci_update_advertisements_enabled_for_current_roles(); 3478 } 3479 #endif 3480 3481 // init unenhanced att bearer mtu 3482 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3483 conn->att_connection.mtu_exchanged = false; 3484 3485 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3486 3487 // restart timer 3488 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3489 // btstack_run_loop_add_timer(&conn->timeout); 3490 3491 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3492 3493 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3494 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3495 3496 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3497 hci_emit_nr_connections_changed(); 3498 } 3499 #endif 3500 3501 #ifdef ENABLE_CLASSIC 3502 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){ 3503 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3504 // LEVEL_4 is tested by l2cap 3505 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3506 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3507 if (level >= LEVEL_3){ 3508 // MITM not possible without keyboard or display 3509 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3510 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3511 3512 // MITM possible if one side has keyboard and the other has keyboard or display 3513 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3514 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3515 3516 // MITM not possible if one side has only display and other side has no keyboard 3517 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3518 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3519 } 3520 // LEVEL 2 requires SSP, which is a given 3521 return true; 3522 } 3523 3524 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3525 // get requested security level 3526 gap_security_level_t requested_security_level = conn->requested_security_level; 3527 if (hci_stack->gap_secure_connections_only_mode){ 3528 requested_security_level = LEVEL_4; 3529 } 3530 3531 // assess security: LEVEL 4 requires SC 3532 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3533 if ((requested_security_level == LEVEL_4) && 3534 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3535 !hci_remote_sc_enabled(conn)){ 3536 log_info("Level 4 required, but SC not supported -> abort"); 3537 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3538 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3539 return; 3540 } 3541 3542 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3543 // - GAP/MOD/NBON/BV-02-C 3544 // - GAP/DM/NBON/BV-01-C 3545 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3546 switch (conn->io_cap_response_auth_req){ 3547 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3548 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3549 if (hci_stack->bondable == false){ 3550 log_info("Dedicated vs. non-bondable -> abort"); 3551 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3552 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3553 return; 3554 } 3555 default: 3556 break; 3557 } 3558 } 3559 3560 // assess security based on io capabilities 3561 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3562 // responder: fully validate io caps of both sides as well as OOB data 3563 bool security_possible = false; 3564 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3565 3566 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3567 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3568 // so we merge the OOB data availability 3569 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3570 if (conn->classic_oob_c_192 != NULL){ 3571 have_oob_data |= 1; 3572 } 3573 if (conn->classic_oob_c_256 != NULL){ 3574 have_oob_data |= 2; 3575 } 3576 // for up to Level 3, either P-192 as well as P-256 will do 3577 // 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 3578 // if remote does not SC, we should not receive P-256 data either 3579 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3580 security_possible = true; 3581 } 3582 // for Level 4, P-256 is needed 3583 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3584 security_possible = true; 3585 } 3586 #endif 3587 3588 if (security_possible == false){ 3589 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3590 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3591 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3592 return; 3593 } 3594 } else { 3595 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3596 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3597 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3598 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3599 log_info("Level 3+ required, but no input/output -> abort"); 3600 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3601 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3602 return; 3603 } 3604 #endif 3605 #endif 3606 } 3607 3608 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3609 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3610 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3611 } else { 3612 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3613 } 3614 #endif 3615 } 3616 3617 #endif 3618 3619 static void event_handler(uint8_t *packet, uint16_t size){ 3620 3621 uint16_t event_length = packet[1]; 3622 3623 // assert packet is complete 3624 if (size != (event_length + 2u)){ 3625 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3626 return; 3627 } 3628 3629 hci_con_handle_t handle; 3630 hci_connection_t * conn; 3631 int i; 3632 3633 #ifdef ENABLE_CLASSIC 3634 hci_link_type_t link_type; 3635 bd_addr_t addr; 3636 bd_addr_type_t addr_type; 3637 #endif 3638 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3639 hci_iso_stream_t * iso_stream; 3640 le_audio_big_t * big; 3641 le_audio_big_sync_t * big_sync; 3642 #endif 3643 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3644 btstack_linked_list_iterator_t it; 3645 #endif 3646 #if defined(ENABLE_LE_EXTENDED_ADVERTISING) && defined(ENABLE_LE_CENTRAL) 3647 uint8_t advertising_handle; 3648 #endif 3649 3650 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3651 3652 switch (hci_event_packet_get_type(packet)) { 3653 3654 case HCI_EVENT_COMMAND_COMPLETE: 3655 handle_command_complete_event(packet, size); 3656 break; 3657 3658 case HCI_EVENT_COMMAND_STATUS: 3659 handle_command_status_event(packet, size); 3660 break; 3661 3662 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3663 if (size < 3) return; 3664 uint16_t num_handles = packet[2]; 3665 if (size != (3u + num_handles * 4u)) return; 3666 #ifdef ENABLE_CLASSIC 3667 bool notify_sco = false; 3668 #endif 3669 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3670 bool notify_iso = false; 3671 #endif 3672 uint16_t offset = 3; 3673 for (i=0; i<num_handles;i++){ 3674 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3675 offset += 2u; 3676 uint16_t num_packets = little_endian_read_16(packet, offset); 3677 offset += 2u; 3678 3679 conn = hci_connection_for_handle(handle); 3680 if (conn != NULL) { 3681 3682 if (conn->num_packets_sent >= num_packets) { 3683 conn->num_packets_sent -= num_packets; 3684 } else { 3685 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3686 conn->num_packets_sent = 0; 3687 } 3688 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3689 #ifdef ENABLE_CLASSIC 3690 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3691 notify_sco = true; 3692 } 3693 #endif 3694 } 3695 3696 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3697 hci_controller_dump_packets(); 3698 #endif 3699 3700 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3701 if (conn == NULL){ 3702 iso_stream = hci_iso_stream_for_con_handle(handle); 3703 if (iso_stream != NULL){ 3704 if (iso_stream->num_packets_sent >= num_packets) { 3705 iso_stream->num_packets_sent -= num_packets; 3706 } else { 3707 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3708 iso_stream->num_packets_sent = 0; 3709 } 3710 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3711 big = hci_big_for_handle(iso_stream->group_id); 3712 if (big != NULL){ 3713 big->num_completed_timestamp_current_valid = true; 3714 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3715 } 3716 } 3717 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3718 num_packets, handle, iso_stream->num_packets_sent); 3719 notify_iso = true; 3720 } 3721 } 3722 #endif 3723 } 3724 3725 #ifdef ENABLE_CLASSIC 3726 if (notify_sco){ 3727 hci_notify_if_sco_can_send_now(); 3728 } 3729 #endif 3730 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3731 if (notify_iso){ 3732 hci_iso_notify_can_send_now(); 3733 } 3734 #endif 3735 break; 3736 } 3737 3738 #ifdef ENABLE_CLASSIC 3739 case HCI_EVENT_FLUSH_OCCURRED: 3740 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3741 handle = hci_event_flush_occurred_get_handle(packet); 3742 conn = hci_connection_for_handle(handle); 3743 if (conn) { 3744 log_info("Flush occurred, disconnect 0x%04x", handle); 3745 conn->state = SEND_DISCONNECT; 3746 } 3747 break; 3748 3749 case HCI_EVENT_INQUIRY_COMPLETE: 3750 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3751 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3752 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3753 hci_emit_btstack_event(event, sizeof(event), 1); 3754 } 3755 break; 3756 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3757 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3758 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3759 } 3760 break; 3761 case HCI_EVENT_CONNECTION_REQUEST: 3762 reverse_bd_addr(&packet[2], addr); 3763 link_type = (hci_link_type_t) packet[11]; 3764 3765 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3766 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3767 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3768 bd_addr_copy(hci_stack->decline_addr, addr); 3769 break; 3770 } 3771 3772 if (hci_stack->gap_classic_accept_callback != NULL){ 3773 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3774 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3775 bd_addr_copy(hci_stack->decline_addr, addr); 3776 break; 3777 } 3778 } 3779 3780 // TODO: eval COD 8-10 3781 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3782 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3783 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3784 if (!conn) { 3785 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3786 } 3787 if (!conn) { 3788 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3789 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3790 bd_addr_copy(hci_stack->decline_addr, addr); 3791 hci_run(); 3792 // avoid event to higher layer 3793 return; 3794 } 3795 conn->state = RECEIVED_CONNECTION_REQUEST; 3796 // store info about eSCO 3797 if (link_type == HCI_LINK_TYPE_ESCO){ 3798 conn->remote_supported_features[0] |= 1; 3799 } 3800 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3801 if (addr_type == BD_ADDR_TYPE_SCO){ 3802 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3803 // ACL exists unless fuzzing 3804 if (acl_conn != NULL) { 3805 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3806 } 3807 } 3808 hci_run(); 3809 break; 3810 3811 case HCI_EVENT_CONNECTION_COMPLETE: 3812 // Connection management 3813 reverse_bd_addr(&packet[5], addr); 3814 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3815 addr_type = BD_ADDR_TYPE_ACL; 3816 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3817 if (conn) { 3818 switch (conn->state){ 3819 // expected states 3820 case ACCEPTED_CONNECTION_REQUEST: 3821 case SENT_CREATE_CONNECTION: 3822 break; 3823 // unexpected state -> ignore 3824 default: 3825 // don't forward event to app 3826 return; 3827 } 3828 if (!packet[2]){ 3829 conn->state = OPEN; 3830 conn->con_handle = little_endian_read_16(packet, 3); 3831 3832 // trigger write supervision timeout if we're master 3833 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3834 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3835 } 3836 3837 // trigger write automatic flush timeout 3838 if (hci_stack->automatic_flush_timeout != 0){ 3839 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3840 } 3841 3842 // restart timer 3843 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3844 btstack_run_loop_add_timer(&conn->timeout); 3845 3846 // trigger remote features for dedicated bonding 3847 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3848 hci_trigger_remote_features_for_connection(conn); 3849 } 3850 3851 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3852 3853 hci_emit_nr_connections_changed(); 3854 } else { 3855 // connection failed 3856 hci_handle_connection_failed(conn, packet[2]); 3857 } 3858 } 3859 break; 3860 3861 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3862 reverse_bd_addr(&packet[5], addr); 3863 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3864 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3865 3866 // SCO exists unless fuzzer 3867 if (conn == NULL) break; 3868 3869 if (packet[2] != ERROR_CODE_SUCCESS){ 3870 // connection failed, remove entry 3871 hci_handle_connection_failed(conn, packet[2]); 3872 break; 3873 } 3874 3875 conn->state = OPEN; 3876 conn->con_handle = little_endian_read_16(packet, 3); 3877 3878 // update sco payload length for eSCO connections 3879 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3880 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3881 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3882 } 3883 3884 #ifdef ENABLE_SCO_OVER_HCI 3885 // update SCO 3886 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3887 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3888 } 3889 // trigger can send now 3890 if (hci_have_usb_transport()){ 3891 hci_stack->sco_can_send_now = true; 3892 } 3893 3894 // setup implict sco flow control 3895 conn->sco_tx_ready = 0; 3896 conn->sco_tx_active = 0; 3897 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3898 3899 #endif 3900 #ifdef HAVE_SCO_TRANSPORT 3901 // configure sco transport 3902 if (hci_stack->sco_transport != NULL){ 3903 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3904 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3905 } 3906 #endif 3907 break; 3908 3909 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3910 handle = little_endian_read_16(packet, 3); 3911 conn = hci_connection_for_handle(handle); 3912 if (!conn) break; 3913 if (!packet[2]){ 3914 const uint8_t * features = &packet[5]; 3915 hci_handle_remote_features_page_0(conn, features); 3916 3917 // read extended features if possible 3918 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3919 && ((conn->remote_supported_features[0] & 2) != 0)) { 3920 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3921 break; 3922 } 3923 } 3924 hci_handle_remote_features_received(conn); 3925 break; 3926 3927 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3928 handle = little_endian_read_16(packet, 3); 3929 conn = hci_connection_for_handle(handle); 3930 if (!conn) break; 3931 // status = ok, page = 1 3932 if (!packet[2]) { 3933 uint8_t page_number = packet[5]; 3934 uint8_t maximum_page_number = packet[6]; 3935 const uint8_t * features = &packet[7]; 3936 bool done = false; 3937 switch (page_number){ 3938 case 1: 3939 hci_handle_remote_features_page_1(conn, features); 3940 if (maximum_page_number >= 2){ 3941 // get Secure Connections (Controller) from Page 2 if available 3942 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3943 } else { 3944 // otherwise, assume SC (Controller) == SC (Host) 3945 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3946 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3947 } 3948 done = true; 3949 } 3950 break; 3951 case 2: 3952 hci_handle_remote_features_page_2(conn, features); 3953 done = true; 3954 break; 3955 default: 3956 break; 3957 } 3958 if (!done) break; 3959 } 3960 hci_handle_remote_features_received(conn); 3961 break; 3962 3963 case HCI_EVENT_LINK_KEY_REQUEST: 3964 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3965 hci_event_link_key_request_get_bd_addr(packet, addr); 3966 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3967 if (!conn) break; 3968 3969 // lookup link key in db if not cached 3970 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3971 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3972 } 3973 3974 // response sent by hci_run() 3975 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3976 #endif 3977 break; 3978 3979 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3980 hci_event_link_key_request_get_bd_addr(packet, addr); 3981 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3982 if (!conn) break; 3983 3984 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3985 3986 // CVE-2020-26555: ignore NULL link key 3987 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3988 if (btstack_is_null(&packet[8], 16)) break; 3989 3990 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3991 // Change Connection Encryption keeps link key type 3992 if (link_key_type != CHANGED_COMBINATION_KEY){ 3993 conn->link_key_type = link_key_type; 3994 } 3995 3996 // cache link key. link keys stored in little-endian format for legacy reasons 3997 memcpy(&conn->link_key, &packet[8], 16); 3998 3999 // only store link key: 4000 // - if bondable enabled 4001 if (hci_stack->bondable == false) break; 4002 // - if security level sufficient 4003 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 4004 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 4005 break; 4006 } 4007 4008 case HCI_EVENT_PIN_CODE_REQUEST: 4009 hci_event_pin_code_request_get_bd_addr(packet, addr); 4010 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4011 if (!conn) break; 4012 4013 hci_pairing_started(conn, false); 4014 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 4015 if (!hci_stack->bondable ){ 4016 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4017 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 4018 hci_run(); 4019 return; 4020 } 4021 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 4022 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 4023 log_info("Level 4 required, but SC not supported -> abort"); 4024 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4025 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4026 hci_run(); 4027 return; 4028 } 4029 break; 4030 4031 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 4032 hci_event_io_capability_response_get_bd_addr(packet, addr); 4033 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4034 if (!conn) break; 4035 4036 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 4037 hci_pairing_started(conn, true); 4038 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 4039 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 4040 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4041 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 4042 #endif 4043 break; 4044 4045 case HCI_EVENT_IO_CAPABILITY_REQUEST: 4046 hci_event_io_capability_response_get_bd_addr(packet, addr); 4047 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4048 if (!conn) break; 4049 4050 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4051 hci_connection_timestamp(conn); 4052 hci_pairing_started(conn, true); 4053 break; 4054 4055 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4056 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4057 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4058 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4059 if (!conn) break; 4060 4061 hci_connection_timestamp(conn); 4062 4063 hci_pairing_started(conn, true); 4064 4065 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4066 break; 4067 #endif 4068 4069 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4070 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4071 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4072 if (!conn) break; 4073 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4074 if (hci_stack->ssp_auto_accept){ 4075 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4076 }; 4077 } else { 4078 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4079 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4080 // don't forward event to app 4081 hci_run(); 4082 return; 4083 } 4084 break; 4085 4086 case HCI_EVENT_USER_PASSKEY_REQUEST: 4087 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4088 if (hci_stack->ssp_auto_accept){ 4089 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4090 }; 4091 break; 4092 4093 case HCI_EVENT_MODE_CHANGE: 4094 handle = hci_event_mode_change_get_handle(packet); 4095 conn = hci_connection_for_handle(handle); 4096 if (!conn) break; 4097 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4098 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4099 break; 4100 #endif 4101 4102 case HCI_EVENT_ENCRYPTION_CHANGE: 4103 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4104 handle = hci_event_encryption_change_get_connection_handle(packet); 4105 conn = hci_connection_for_handle(handle); 4106 if (!conn) break; 4107 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4108 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4109 if (encryption_enabled){ 4110 if (hci_is_le_connection(conn)){ 4111 // For LE, we accept connection as encrypted 4112 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4113 } 4114 #ifdef ENABLE_CLASSIC 4115 else { 4116 4117 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4118 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4119 bool connected_uses_aes_ccm = encryption_enabled == 2; 4120 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4121 #ifdef ENABLE_TESTING_SUPPORT 4122 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4123 // - GAP/SEC/SEM/BI-31-C 4124 // - GAP/SEC/SEM/BI-32-C 4125 // - GAP/SEC/SEM/BI-33-C 4126 4127 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4128 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4129 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4130 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4131 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4132 } 4133 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4134 conn->link_key_type, new_link_key_type); 4135 conn->link_key_type = new_link_key_type; 4136 #else 4137 log_info("SC during pairing, but only E0 now -> abort"); 4138 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4139 break; 4140 #endif 4141 } 4142 4143 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4144 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4145 if (connected_uses_aes_ccm){ 4146 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4147 } 4148 #else 4149 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4150 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4151 // for all operations that require any security. See BIAS attacks. 4152 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4153 #endif 4154 // validate encryption key size 4155 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4156 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4157 // already got encryption key size 4158 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4159 } else { 4160 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4161 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4162 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4163 } else { 4164 // if not, pretend everything is perfect 4165 hci_handle_read_encryption_key_size_complete(conn, 16); 4166 } 4167 } 4168 } 4169 #endif 4170 } else { 4171 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4172 } 4173 } else { 4174 #ifdef ENABLE_CLASSIC 4175 if (!hci_is_le_connection(conn)){ 4176 uint8_t status = hci_event_encryption_change_get_status(packet); 4177 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4178 conn->bonding_flags &= ~BONDING_DEDICATED; 4179 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4180 conn->bonding_status = status; 4181 } 4182 // trigger security update -> level 0 4183 hci_handle_mutual_authentication_completed(conn); 4184 } 4185 #endif 4186 } 4187 4188 break; 4189 4190 #ifdef ENABLE_CLASSIC 4191 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4192 handle = hci_event_authentication_complete_get_connection_handle(packet); 4193 conn = hci_connection_for_handle(handle); 4194 if (!conn) break; 4195 4196 // clear authentication active flag 4197 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4198 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4199 4200 // authenticated only if auth status == 0 4201 if (hci_event_authentication_complete_get_status(packet) == 0){ 4202 // authenticated 4203 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4204 4205 // If not already encrypted, start encryption 4206 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4207 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4208 break; 4209 } 4210 } 4211 4212 // emit updated security level (will be 0 if not authenticated) 4213 hci_handle_mutual_authentication_completed(conn); 4214 break; 4215 4216 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4217 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4218 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4219 if (!conn) break; 4220 4221 // treat successfully paired connection as authenticated 4222 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4223 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4224 } 4225 4226 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4227 break; 4228 #endif 4229 4230 // HCI_EVENT_DISCONNECTION_COMPLETE 4231 // has been split, to first notify stack before shutting connection down 4232 // see end of function, too. 4233 case HCI_EVENT_DISCONNECTION_COMPLETE: 4234 if (packet[2]) break; // status != 0 4235 handle = little_endian_read_16(packet, 3); 4236 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4237 if (hci_stack->acl_fragmentation_total_size > 0u) { 4238 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4239 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4240 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4241 hci_stack->acl_fragmentation_total_size = 0; 4242 hci_stack->acl_fragmentation_pos = 0; 4243 if (release_buffer){ 4244 hci_release_packet_buffer(); 4245 } 4246 } 4247 } 4248 4249 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4250 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4251 if (hci_stack->iso_fragmentation_total_size > 0u) { 4252 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4253 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4254 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4255 hci_stack->iso_fragmentation_total_size = 0; 4256 hci_stack->iso_fragmentation_pos = 0; 4257 if (release_buffer){ 4258 hci_release_packet_buffer(); 4259 } 4260 } 4261 } 4262 4263 // finalize iso stream for CIS handle 4264 iso_stream = hci_iso_stream_for_con_handle(handle); 4265 if (iso_stream != NULL){ 4266 hci_iso_stream_finalize(iso_stream); 4267 break; 4268 } 4269 #endif 4270 4271 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4272 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4273 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4274 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4275 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4276 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4277 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4278 hci_stack->num_cmd_packets = 1; 4279 } 4280 #endif 4281 4282 conn = hci_connection_for_handle(handle); 4283 if (!conn) break; 4284 #ifdef ENABLE_CLASSIC 4285 // pairing failed if it was ongoing 4286 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4287 #endif 4288 4289 // emit dedicatd bonding event 4290 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4291 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4292 } 4293 4294 // mark connection for shutdown, stop timers, reset state 4295 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4296 hci_connection_stop_timer(conn); 4297 hci_connection_init(conn); 4298 4299 #ifdef ENABLE_BLE 4300 #ifdef ENABLE_LE_PERIPHERAL 4301 // re-enable advertisements for le connections if active 4302 if (hci_is_le_connection(conn)){ 4303 hci_update_advertisements_enabled_for_current_roles(); 4304 } 4305 #endif 4306 #endif 4307 break; 4308 4309 case HCI_EVENT_HARDWARE_ERROR: 4310 log_error("Hardware Error: 0x%02x", packet[2]); 4311 if (hci_stack->hardware_error_callback){ 4312 (*hci_stack->hardware_error_callback)(packet[2]); 4313 } else { 4314 // if no special requests, just reboot stack 4315 hci_power_control_off(); 4316 hci_power_control_on(); 4317 } 4318 break; 4319 4320 #ifdef ENABLE_CLASSIC 4321 case HCI_EVENT_ROLE_CHANGE: 4322 if (packet[2]) break; // status != 0 4323 reverse_bd_addr(&packet[3], addr); 4324 addr_type = BD_ADDR_TYPE_ACL; 4325 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4326 if (!conn) break; 4327 conn->role = (hci_role_t) packet[9]; 4328 break; 4329 #endif 4330 4331 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4332 // release packet buffer only for asynchronous transport and if there are not further fragments 4333 if (hci_transport_synchronous()) { 4334 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4335 return; // instead of break: to avoid re-entering hci_run() 4336 } 4337 hci_stack->acl_fragmentation_tx_active = 0; 4338 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4339 hci_stack->iso_fragmentation_tx_active = 0; 4340 if (hci_stack->iso_fragmentation_total_size) break; 4341 #endif 4342 if (hci_stack->acl_fragmentation_total_size) break; 4343 4344 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4345 hci_stack->hci_packet_buffer_reserved = false; 4346 4347 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4348 hci_iso_notify_can_send_now(); 4349 #endif 4350 // L2CAP receives this event via the hci_emit_event below 4351 4352 #ifdef ENABLE_CLASSIC 4353 // For SCO, we do the can_send_now_check here 4354 hci_notify_if_sco_can_send_now(); 4355 #endif 4356 break; 4357 4358 #ifdef ENABLE_CLASSIC 4359 case HCI_EVENT_SCO_CAN_SEND_NOW: 4360 // For SCO, we do the can_send_now_check here 4361 hci_stack->sco_can_send_now = true; 4362 hci_notify_if_sco_can_send_now(); 4363 return; 4364 4365 // explode inquriy results for easier consumption 4366 case HCI_EVENT_INQUIRY_RESULT: 4367 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4368 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4369 gap_inquiry_explode(packet, size); 4370 break; 4371 #endif 4372 4373 #ifdef ENABLE_BLE 4374 case HCI_EVENT_LE_META: 4375 switch (packet[2]){ 4376 #ifdef ENABLE_LE_CENTRAL 4377 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4378 if (!hci_stack->le_scanning_enabled) break; 4379 le_handle_advertisement_report(packet, size); 4380 break; 4381 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4382 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4383 if (!hci_stack->le_scanning_enabled) break; 4384 le_handle_extended_advertisement_report(packet, size); 4385 break; 4386 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4387 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4388 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4389 break; 4390 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4391 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4392 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4393 while (btstack_linked_list_iterator_has_next(&it)) { 4394 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4395 if (advertising_set->advertising_handle == advertising_handle){ 4396 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4397 } 4398 } 4399 break; 4400 #endif 4401 #endif 4402 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4403 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4404 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4405 hci_handle_le_connection_complete_event(packet); 4406 break; 4407 4408 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4409 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4410 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4411 conn = hci_connection_for_handle(handle); 4412 if (!conn) break; 4413 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4414 break; 4415 4416 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4417 // connection 4418 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4419 conn = hci_connection_for_handle(handle); 4420 if (conn) { 4421 // read arguments 4422 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4423 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4424 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4425 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4426 4427 // validate against current connection parameter range 4428 le_connection_parameter_range_t existing_range; 4429 gap_get_connection_parameter_range(&existing_range); 4430 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4431 if (update_parameter){ 4432 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4433 conn->le_conn_interval_min = le_conn_interval_min; 4434 conn->le_conn_interval_max = le_conn_interval_max; 4435 conn->le_conn_latency = le_conn_latency; 4436 conn->le_supervision_timeout = le_supervision_timeout; 4437 } else { 4438 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4439 } 4440 } 4441 break; 4442 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4443 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4444 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4445 conn = hci_connection_for_handle(handle); 4446 if (conn) { 4447 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4448 } 4449 break; 4450 #endif 4451 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4452 case HCI_SUBEVENT_LE_CIS_REQUEST: 4453 // incoming CIS request, allocate iso stream object and cache metadata 4454 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4455 hci_subevent_le_cis_request_get_cig_id(packet), 4456 hci_subevent_le_cis_request_get_cis_id(packet)); 4457 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4458 if (iso_stream != NULL){ 4459 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4460 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4461 } 4462 break; 4463 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4464 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4465 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4466 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4467 iso_stream = hci_iso_stream_for_con_handle(handle); 4468 btstack_assert(iso_stream != NULL); 4469 // track connection info 4470 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4471 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4472 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4473 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4474 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4475 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4476 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4477 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4478 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4479 // CIS Accept by Peripheral 4480 if (status == ERROR_CODE_SUCCESS){ 4481 if (iso_stream->max_sdu_p_to_c > 0){ 4482 // we're peripheral and we will send data 4483 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4484 } else { 4485 // we're peripheral and we will only receive data 4486 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4487 } 4488 } else { 4489 hci_cis_handle_created(iso_stream, status); 4490 } 4491 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4492 } else { 4493 // CIG Setup by Central 4494 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4495 btstack_assert(cig != NULL); 4496 // update iso stream state 4497 if (status == ERROR_CODE_SUCCESS){ 4498 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4499 } else { 4500 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4501 } 4502 // update cig state 4503 for (i=0;i<cig->num_cis;i++){ 4504 if (cig->cis_con_handles[i] == handle){ 4505 cig->cis_setup_active[i] = false; 4506 if (status == ERROR_CODE_SUCCESS){ 4507 cig->cis_established[i] = true; 4508 } else { 4509 hci_cis_handle_created(iso_stream, status); 4510 } 4511 } 4512 } 4513 4514 // trigger iso path setup if complete 4515 bool cis_setup_active = false; 4516 for (i=0;i<cig->num_cis;i++){ 4517 cis_setup_active |= cig->cis_setup_active[i]; 4518 } 4519 if (cis_setup_active == false){ 4520 cig->state_vars.next_cis = 0; 4521 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4522 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4523 } 4524 } 4525 } 4526 break; 4527 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4528 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4529 big = hci_big_for_handle(packet[4]); 4530 if (big != NULL){ 4531 uint8_t status = packet[3]; 4532 if (status == ERROR_CODE_SUCCESS){ 4533 // store bis_con_handles and trigger iso path setup 4534 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4535 4536 for (i=0;i<num_bis;i++){ 4537 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4538 big->bis_con_handles[i] = bis_handle; 4539 // assign bis handle 4540 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4541 while (btstack_linked_list_iterator_has_next(&it)){ 4542 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4543 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4544 (iso_stream->group_id == big->big_handle)){ 4545 iso_stream->cis_handle = bis_handle; 4546 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4547 break; 4548 } 4549 } 4550 } 4551 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4552 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4553 big->state_vars.next_bis = 0; 4554 } 4555 } else { 4556 // create BIG failed or has been stopped by us 4557 hci_iso_create_big_failed(big, status); 4558 } 4559 } 4560 break; 4561 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4562 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4563 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4564 if (big != NULL){ 4565 // finalize associated ISO streams 4566 4567 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4568 while (btstack_linked_list_iterator_has_next(&it)){ 4569 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4570 if (iso_stream->group_id == big->big_handle){ 4571 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4572 btstack_linked_list_iterator_remove(&it); 4573 btstack_memory_hci_iso_stream_free(iso_stream); 4574 } 4575 } 4576 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4577 switch (big->state){ 4578 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4579 hci_emit_big_created(big, big->state_vars.status); 4580 break; 4581 default: 4582 hci_emit_big_terminated(big); 4583 break; 4584 } 4585 } 4586 break; 4587 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4588 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4589 big_sync = hci_big_sync_for_handle(packet[4]); 4590 if (big_sync != NULL){ 4591 uint8_t status = packet[3]; 4592 if (status == ERROR_CODE_SUCCESS){ 4593 // store bis_con_handles and trigger iso path setup 4594 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4595 for (i=0;i<num_bis;i++){ 4596 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4597 big_sync->bis_con_handles[i] = bis_handle; 4598 // setup iso_stream_t 4599 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4600 while (btstack_linked_list_iterator_has_next(&it)){ 4601 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4602 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4603 (iso_stream->group_id == big_sync->big_handle)){ 4604 iso_stream->cis_handle = bis_handle; 4605 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4606 break; 4607 } 4608 } 4609 } 4610 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4611 // trigger iso path setup 4612 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4613 big_sync->state_vars.next_bis = 0; 4614 } 4615 } else { 4616 // create BIG Sync failed or has been stopped by us 4617 hci_iso_big_sync_failed(big_sync, status); 4618 } 4619 } 4620 break; 4621 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4622 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4623 big_sync = hci_big_sync_for_handle(packet[4]); 4624 if (big_sync != NULL){ 4625 uint8_t big_handle = packet[4]; 4626 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4627 hci_emit_big_sync_stopped(big_handle); 4628 } 4629 break; 4630 #endif 4631 default: 4632 break; 4633 } 4634 break; 4635 #endif 4636 case HCI_EVENT_VENDOR_SPECIFIC: 4637 // Vendor specific commands often create vendor specific event instead of num completed packets 4638 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4639 switch (hci_stack->manufacturer){ 4640 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4641 hci_stack->num_cmd_packets = 1; 4642 break; 4643 default: 4644 break; 4645 } 4646 break; 4647 default: 4648 break; 4649 } 4650 4651 handle_event_for_current_stack_state(packet, size); 4652 4653 // notify upper stack 4654 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4655 4656 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4657 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4658 handle = little_endian_read_16(packet, 3); 4659 hci_connection_t * aConn = hci_connection_for_handle(handle); 4660 // discard connection if app did not trigger a reconnect in the event handler 4661 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4662 hci_shutdown_connection(aConn); 4663 } 4664 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4665 hci_controller_dump_packets(); 4666 #endif 4667 } 4668 4669 // execute main loop 4670 hci_run(); 4671 } 4672 4673 #ifdef ENABLE_CLASSIC 4674 4675 static void sco_handler(uint8_t * packet, uint16_t size){ 4676 // lookup connection struct 4677 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4678 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4679 if (!conn) return; 4680 4681 #ifdef ENABLE_SCO_OVER_HCI 4682 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4683 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4684 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4685 packet[2] = 0x3c; 4686 memmove(&packet[3], &packet[23], 63); 4687 size = 63; 4688 } 4689 } 4690 4691 if (hci_have_usb_transport()){ 4692 // Nothing to do 4693 } else { 4694 // 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); 4695 if (hci_stack->synchronous_flow_control_enabled == 0){ 4696 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4697 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4698 if (conn->sco_tx_active == 0){ 4699 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4700 conn->sco_tx_active = 1; 4701 conn->sco_tx_ready = max_sco_packets; 4702 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4703 hci_notify_if_sco_can_send_now(); 4704 } 4705 } else { 4706 if (conn->sco_tx_ready < max_sco_packets){ 4707 conn->sco_tx_ready++; 4708 } 4709 hci_notify_if_sco_can_send_now(); 4710 } 4711 } 4712 } 4713 #endif 4714 4715 // deliver to app 4716 if (hci_stack->sco_packet_handler) { 4717 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4718 } 4719 4720 #ifdef HAVE_SCO_TRANSPORT 4721 // We can send one packet for each received packet 4722 conn->sco_tx_ready++; 4723 hci_notify_if_sco_can_send_now(); 4724 #endif 4725 4726 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4727 conn->num_packets_completed++; 4728 hci_stack->host_completed_packets = 1; 4729 hci_run(); 4730 #endif 4731 } 4732 #endif 4733 4734 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4735 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4736 // propagate ISO packets received as ACL 4737 hci_iso_stream_t * iso_stream = NULL; 4738 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4739 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4740 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4741 if (iso_stream != NULL){ 4742 packet_type = HCI_ISO_DATA_PACKET; 4743 } 4744 } 4745 #endif 4746 4747 // don't log internal events unless requested 4748 bool internal_event = (packet_type == HCI_EVENT_PACKET) && (hci_event_packet_get_type(packet) >= BTSTACK_EVENT_FIRST); 4749 bool log_packet = internal_event == false; 4750 #ifdef ENABLE_LOG_BTSTACK_EVENTS 4751 log_packet = true; 4752 #endif 4753 if (log_packet){ 4754 hci_dump_packet(packet_type, 1, packet, size); 4755 } 4756 4757 switch (packet_type) { 4758 case HCI_EVENT_PACKET: 4759 event_handler(packet, size); 4760 break; 4761 case HCI_ACL_DATA_PACKET: 4762 acl_handler(packet, size); 4763 break; 4764 #ifdef ENABLE_CLASSIC 4765 case HCI_SCO_DATA_PACKET: 4766 sco_handler(packet, size); 4767 break; 4768 #endif 4769 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4770 case HCI_ISO_DATA_PACKET: 4771 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4772 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4773 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4774 } 4775 hci_iso_packet_handler(iso_stream, packet, size); 4776 break; 4777 #endif 4778 default: 4779 break; 4780 } 4781 } 4782 4783 /** 4784 * @brief Add event packet handler. 4785 */ 4786 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4787 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4788 } 4789 4790 /** 4791 * @brief Remove event packet handler. 4792 */ 4793 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4794 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4795 } 4796 4797 /** Register HCI packet handlers */ 4798 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4799 hci_stack->acl_packet_handler = handler; 4800 } 4801 4802 #ifdef ENABLE_CLASSIC 4803 /** 4804 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4805 */ 4806 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4807 hci_stack->sco_packet_handler = handler; 4808 } 4809 #endif 4810 4811 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4812 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4813 hci_stack->iso_packet_handler = handler; 4814 } 4815 #endif 4816 4817 static void hci_state_reset(void){ 4818 // no connections yet 4819 hci_stack->connections = NULL; 4820 4821 // keep discoverable/connectable as this has been requested by the client(s) 4822 // hci_stack->discoverable = 0; 4823 // hci_stack->connectable = 0; 4824 // hci_stack->bondable = 1; 4825 // hci_stack->own_addr_type = 0; 4826 4827 // buffer is free 4828 hci_stack->hci_packet_buffer_reserved = false; 4829 4830 // no pending cmds 4831 hci_stack->decline_reason = 0; 4832 4833 hci_stack->secure_connections_active = false; 4834 4835 #ifdef ENABLE_CLASSIC 4836 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4837 4838 hci_stack->gap_tasks_classic = 4839 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4840 GAP_TASK_SET_CLASS_OF_DEVICE | 4841 GAP_TASK_SET_LOCAL_NAME | 4842 GAP_TASK_SET_EIR_DATA | 4843 GAP_TASK_WRITE_SCAN_ENABLE | 4844 GAP_TASK_WRITE_PAGE_TIMEOUT; 4845 #endif 4846 4847 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4848 hci_stack->classic_read_local_oob_data = false; 4849 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4850 #endif 4851 4852 // LE 4853 #ifdef ENABLE_BLE 4854 memset(hci_stack->le_random_address, 0, 6); 4855 hci_stack->le_random_address_set = 0; 4856 #endif 4857 #ifdef ENABLE_LE_CENTRAL 4858 hci_stack->le_scanning_active = false; 4859 hci_stack->le_scanning_param_update = true; 4860 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4861 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4862 hci_stack->le_whitelist_capacity = 0; 4863 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4864 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4865 #endif 4866 #endif 4867 #ifdef ENABLE_LE_PERIPHERAL 4868 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4869 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4870 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4871 } 4872 if (hci_stack->le_advertisements_data != NULL){ 4873 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4874 } 4875 #endif 4876 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4877 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4878 #endif 4879 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4880 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4881 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4882 #endif 4883 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4884 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4885 #endif 4886 } 4887 4888 #ifdef ENABLE_CLASSIC 4889 /** 4890 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4891 */ 4892 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4893 // store and open remote device db 4894 hci_stack->link_key_db = link_key_db; 4895 if (hci_stack->link_key_db) { 4896 hci_stack->link_key_db->open(); 4897 } 4898 } 4899 #endif 4900 4901 void hci_init(const hci_transport_t *transport, const void *config){ 4902 4903 #ifdef HAVE_MALLOC 4904 if (!hci_stack) { 4905 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4906 } 4907 btstack_assert(hci_stack != NULL); 4908 #else 4909 hci_stack = &hci_stack_static; 4910 #endif 4911 memset(hci_stack, 0, sizeof(hci_stack_t)); 4912 4913 // reference to use transport layer implementation 4914 hci_stack->hci_transport = transport; 4915 4916 // reference to used config 4917 hci_stack->config = config; 4918 4919 // setup pointer for outgoing packet buffer 4920 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4921 4922 // max acl payload size defined in config.h 4923 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4924 4925 // register packet handlers with transport 4926 transport->register_packet_handler(&packet_handler); 4927 4928 hci_stack->state = HCI_STATE_OFF; 4929 4930 // class of device 4931 hci_stack->class_of_device = 0x007a020c; // Smartphone 4932 4933 // bondable by default 4934 hci_stack->bondable = 1; 4935 4936 #ifdef ENABLE_CLASSIC 4937 // classic name 4938 hci_stack->local_name = default_classic_name; 4939 4940 // Master slave policy 4941 hci_stack->master_slave_policy = 1; 4942 4943 // Allow Role Switch 4944 hci_stack->allow_role_switch = 1; 4945 4946 // Default / minimum security level = 2 4947 hci_stack->gap_security_level = LEVEL_2; 4948 4949 // Default Security Mode 4 4950 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4951 4952 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4953 hci_stack->gap_required_encyrption_key_size = 7; 4954 4955 // Link Supervision Timeout 4956 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4957 4958 // Page Timeout 4959 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4960 4961 // All ACL packet types are enabledh 4962 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4963 #endif 4964 4965 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4966 hci_stack->ssp_enable = 1; 4967 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4968 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4969 hci_stack->ssp_auto_accept = 1; 4970 4971 // Secure Connections: enable (requires support from Controller) 4972 hci_stack->secure_connections_enable = true; 4973 4974 // voice setting - signed 16 bit pcm data with CVSD over the air 4975 hci_stack->sco_voice_setting = 0x60; 4976 4977 #ifdef ENABLE_BLE 4978 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4979 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4980 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4981 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4982 hci_stack->le_connection_latency = 4; // 4 4983 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4984 hci_stack->le_minimum_ce_length = 0; // 0 ms 4985 hci_stack->le_maximum_ce_length = 0; // 0 ms 4986 #endif 4987 4988 #ifdef ENABLE_LE_CENTRAL 4989 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4990 4991 // default LE Scanning 4992 hci_stack->le_scan_type = 0x01; // active 4993 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4994 hci_stack->le_scan_window = 0x30; // 30 ms 4995 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4996 #endif 4997 4998 #ifdef ENABLE_LE_PERIPHERAL 4999 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 5000 5001 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 5002 hci_stack->le_advertisements_interval_min = 0x0800; 5003 hci_stack->le_advertisements_interval_max = 0x0800; 5004 hci_stack->le_advertisements_type = 0; 5005 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 5006 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 5007 hci_stack->le_advertisements_channel_map = 0x07; 5008 hci_stack->le_advertisements_filter_policy = 0; 5009 #endif 5010 5011 // connection parameter range used to answer connection parameter update requests in l2cap 5012 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 5013 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 5014 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 5015 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 5016 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 5017 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 5018 5019 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5020 hci_stack->iso_packets_to_queue = 1; 5021 #endif 5022 5023 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5024 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5025 #endif 5026 5027 hci_state_reset(); 5028 } 5029 5030 void hci_deinit(void){ 5031 btstack_run_loop_remove_timer(&hci_stack->timeout); 5032 #ifdef HAVE_MALLOC 5033 if (hci_stack) { 5034 free(hci_stack); 5035 } 5036 #endif 5037 hci_stack = NULL; 5038 5039 #ifdef ENABLE_CLASSIC 5040 disable_l2cap_timeouts = 0; 5041 #endif 5042 } 5043 5044 /** 5045 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5046 */ 5047 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5048 hci_stack->chipset = chipset_driver; 5049 5050 // reset chipset driver - init is also called on power_up 5051 if (hci_stack->chipset && hci_stack->chipset->init){ 5052 hci_stack->chipset->init(hci_stack->config); 5053 } 5054 } 5055 5056 void hci_enable_custom_pre_init(void){ 5057 hci_stack->chipset_pre_init = true; 5058 } 5059 5060 /** 5061 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5062 */ 5063 void hci_set_control(const btstack_control_t *hardware_control){ 5064 // references to used control implementation 5065 hci_stack->control = hardware_control; 5066 // init with transport config 5067 hardware_control->init(hci_stack->config); 5068 } 5069 5070 static void hci_discard_connections(void){ 5071 btstack_linked_list_iterator_t it; 5072 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5073 while (btstack_linked_list_iterator_has_next(&it)){ 5074 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5075 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5076 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5077 hci_shutdown_connection(connection); 5078 } 5079 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5080 while (hci_stack->iso_streams != NULL){ 5081 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5082 } 5083 #endif 5084 } 5085 5086 void hci_close(void){ 5087 5088 #ifdef ENABLE_CLASSIC 5089 // close remote device db 5090 if (hci_stack->link_key_db) { 5091 hci_stack->link_key_db->close(); 5092 } 5093 #endif 5094 5095 hci_discard_connections(); 5096 5097 hci_power_control(HCI_POWER_OFF); 5098 5099 #ifdef HAVE_MALLOC 5100 free(hci_stack); 5101 #endif 5102 hci_stack = NULL; 5103 } 5104 5105 #ifdef HAVE_SCO_TRANSPORT 5106 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5107 hci_stack->sco_transport = sco_transport; 5108 sco_transport->register_packet_handler(&packet_handler); 5109 } 5110 #endif 5111 5112 #ifdef ENABLE_CLASSIC 5113 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5114 // validate ranage and set 5115 if (encryption_key_size < 7) return; 5116 if (encryption_key_size > 16) return; 5117 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5118 } 5119 5120 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5121 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5122 hci_stack->gap_security_mode = security_mode; 5123 return ERROR_CODE_SUCCESS; 5124 } else { 5125 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5126 } 5127 } 5128 5129 gap_security_mode_t gap_get_security_mode(void){ 5130 return hci_stack->gap_security_mode; 5131 } 5132 5133 void gap_set_security_level(gap_security_level_t security_level){ 5134 hci_stack->gap_security_level = security_level; 5135 } 5136 5137 gap_security_level_t gap_get_security_level(void){ 5138 if (hci_stack->gap_secure_connections_only_mode){ 5139 return LEVEL_4; 5140 } 5141 return hci_stack->gap_security_level; 5142 } 5143 5144 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5145 hci_stack->gap_minimal_service_security_level = security_level; 5146 } 5147 5148 void gap_set_secure_connections_only_mode(bool enable){ 5149 hci_stack->gap_secure_connections_only_mode = enable; 5150 } 5151 5152 bool gap_get_secure_connections_only_mode(void){ 5153 return hci_stack->gap_secure_connections_only_mode; 5154 } 5155 #endif 5156 5157 #ifdef ENABLE_CLASSIC 5158 void gap_set_class_of_device(uint32_t class_of_device){ 5159 hci_stack->class_of_device = class_of_device; 5160 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5161 hci_run(); 5162 } 5163 5164 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5165 hci_stack->default_link_policy_settings = default_link_policy_settings; 5166 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5167 hci_run(); 5168 } 5169 5170 void gap_set_allow_role_switch(bool allow_role_switch){ 5171 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5172 } 5173 5174 uint8_t hci_get_allow_role_switch(void){ 5175 return hci_stack->allow_role_switch; 5176 } 5177 5178 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5179 hci_stack->link_supervision_timeout = link_supervision_timeout; 5180 } 5181 5182 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5183 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5184 } 5185 5186 uint16_t hci_automatic_flush_timeout(void){ 5187 return hci_stack->automatic_flush_timeout; 5188 } 5189 5190 void hci_disable_l2cap_timeout_check(void){ 5191 disable_l2cap_timeouts = 1; 5192 } 5193 #endif 5194 5195 #ifndef HAVE_HOST_CONTROLLER_API 5196 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5197 void hci_set_bd_addr(bd_addr_t addr){ 5198 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5199 hci_stack->custom_bd_addr_set = 1; 5200 } 5201 #endif 5202 5203 // State-Module-Driver overview 5204 // state module low-level 5205 // HCI_STATE_OFF off close 5206 // HCI_STATE_INITIALIZING, on open 5207 // HCI_STATE_WORKING, on open 5208 // HCI_STATE_HALTING, on open 5209 // HCI_STATE_SLEEPING, off/sleep close 5210 // HCI_STATE_FALLING_ASLEEP on open 5211 5212 static int hci_power_control_on(void){ 5213 5214 // power on 5215 int err = 0; 5216 if (hci_stack->control && hci_stack->control->on){ 5217 err = (*hci_stack->control->on)(); 5218 } 5219 if (err){ 5220 log_error( "POWER_ON failed"); 5221 hci_emit_hci_open_failed(); 5222 return err; 5223 } 5224 5225 // int chipset driver 5226 if (hci_stack->chipset && hci_stack->chipset->init){ 5227 hci_stack->chipset->init(hci_stack->config); 5228 } 5229 5230 // init transport 5231 if (hci_stack->hci_transport->init){ 5232 hci_stack->hci_transport->init(hci_stack->config); 5233 } 5234 5235 // open transport 5236 err = hci_stack->hci_transport->open(); 5237 if (err){ 5238 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5239 if (hci_stack->control && hci_stack->control->off){ 5240 (*hci_stack->control->off)(); 5241 } 5242 hci_emit_hci_open_failed(); 5243 return err; 5244 } 5245 return 0; 5246 } 5247 5248 static void hci_power_control_off(void){ 5249 5250 log_info("hci_power_control_off"); 5251 5252 // close low-level device 5253 hci_stack->hci_transport->close(); 5254 5255 log_info("hci_power_control_off - hci_transport closed"); 5256 5257 // power off 5258 if (hci_stack->control && hci_stack->control->off){ 5259 (*hci_stack->control->off)(); 5260 } 5261 5262 log_info("hci_power_control_off - control closed"); 5263 5264 hci_stack->state = HCI_STATE_OFF; 5265 } 5266 5267 static void hci_power_control_sleep(void){ 5268 5269 log_info("hci_power_control_sleep"); 5270 5271 #if 0 5272 // don't close serial port during sleep 5273 5274 // close low-level device 5275 hci_stack->hci_transport->close(hci_stack->config); 5276 #endif 5277 5278 // sleep mode 5279 if (hci_stack->control && hci_stack->control->sleep){ 5280 (*hci_stack->control->sleep)(); 5281 } 5282 5283 hci_stack->state = HCI_STATE_SLEEPING; 5284 } 5285 5286 static int hci_power_control_wake(void){ 5287 5288 log_info("hci_power_control_wake"); 5289 5290 // wake on 5291 if (hci_stack->control && hci_stack->control->wake){ 5292 (*hci_stack->control->wake)(); 5293 } 5294 5295 #if 0 5296 // open low-level device 5297 int err = hci_stack->hci_transport->open(hci_stack->config); 5298 if (err){ 5299 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5300 if (hci_stack->control && hci_stack->control->off){ 5301 (*hci_stack->control->off)(); 5302 } 5303 hci_emit_hci_open_failed(); 5304 return err; 5305 } 5306 #endif 5307 5308 return 0; 5309 } 5310 5311 static void hci_power_enter_initializing_state(void){ 5312 // set up state machine 5313 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5314 hci_stack->hci_packet_buffer_reserved = false; 5315 hci_stack->state = HCI_STATE_INITIALIZING; 5316 5317 #ifndef HAVE_HOST_CONTROLLER_API 5318 if (hci_stack->chipset_pre_init) { 5319 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5320 } else 5321 #endif 5322 { 5323 hci_stack->substate = HCI_INIT_SEND_RESET; 5324 } 5325 } 5326 5327 static void hci_power_enter_halting_state(void){ 5328 #ifdef ENABLE_BLE 5329 // drop entries scheduled for removal, mark others for re-adding 5330 btstack_linked_list_iterator_t it; 5331 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5332 while (btstack_linked_list_iterator_has_next(&it)){ 5333 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5334 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5335 btstack_linked_list_iterator_remove(&it); 5336 btstack_memory_whitelist_entry_free(entry); 5337 } else { 5338 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5339 } 5340 } 5341 #ifdef ENABLE_LE_CENTRAL 5342 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5343 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5344 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5345 while (btstack_linked_list_iterator_has_next(&it)){ 5346 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5347 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5348 btstack_linked_list_iterator_remove(&it); 5349 btstack_memory_periodic_advertiser_list_entry_free(entry); 5350 } else { 5351 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5352 continue; 5353 } 5354 } 5355 #endif 5356 #endif 5357 #endif 5358 // see hci_run 5359 hci_stack->state = HCI_STATE_HALTING; 5360 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5361 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5362 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5363 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5364 btstack_run_loop_add_timer(&hci_stack->timeout); 5365 } 5366 5367 // returns error 5368 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5369 int err; 5370 switch (power_mode){ 5371 case HCI_POWER_ON: 5372 err = hci_power_control_on(); 5373 if (err != 0) { 5374 log_error("hci_power_control_on() error %d", err); 5375 return err; 5376 } 5377 hci_power_enter_initializing_state(); 5378 break; 5379 case HCI_POWER_OFF: 5380 // do nothing 5381 break; 5382 case HCI_POWER_SLEEP: 5383 // do nothing (with SLEEP == OFF) 5384 break; 5385 default: 5386 btstack_assert(false); 5387 break; 5388 } 5389 return ERROR_CODE_SUCCESS; 5390 } 5391 5392 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5393 switch (power_mode){ 5394 case HCI_POWER_ON: 5395 // do nothing 5396 break; 5397 case HCI_POWER_OFF: 5398 // no connections yet, just turn it off 5399 hci_power_control_off(); 5400 break; 5401 case HCI_POWER_SLEEP: 5402 // no connections yet, just turn it off 5403 hci_power_control_sleep(); 5404 break; 5405 default: 5406 btstack_assert(false); 5407 break; 5408 } 5409 return ERROR_CODE_SUCCESS; 5410 } 5411 5412 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5413 switch (power_mode){ 5414 case HCI_POWER_ON: 5415 // do nothing 5416 break; 5417 case HCI_POWER_OFF: 5418 hci_power_enter_halting_state(); 5419 break; 5420 case HCI_POWER_SLEEP: 5421 // see hci_run 5422 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5423 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5424 break; 5425 default: 5426 btstack_assert(false); 5427 break; 5428 } 5429 return ERROR_CODE_SUCCESS; 5430 } 5431 5432 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5433 switch (power_mode){ 5434 case HCI_POWER_ON: 5435 hci_power_enter_initializing_state(); 5436 break; 5437 case HCI_POWER_OFF: 5438 // do nothing 5439 break; 5440 case HCI_POWER_SLEEP: 5441 // see hci_run 5442 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5443 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5444 break; 5445 default: 5446 btstack_assert(false); 5447 break; 5448 } 5449 return ERROR_CODE_SUCCESS; 5450 } 5451 5452 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5453 switch (power_mode){ 5454 case HCI_POWER_ON: 5455 hci_power_enter_initializing_state(); 5456 break; 5457 case HCI_POWER_OFF: 5458 hci_power_enter_halting_state(); 5459 break; 5460 case HCI_POWER_SLEEP: 5461 // do nothing 5462 break; 5463 default: 5464 btstack_assert(false); 5465 break; 5466 } 5467 return ERROR_CODE_SUCCESS; 5468 } 5469 5470 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5471 int err; 5472 switch (power_mode){ 5473 case HCI_POWER_ON: 5474 err = hci_power_control_wake(); 5475 if (err) return err; 5476 hci_power_enter_initializing_state(); 5477 break; 5478 case HCI_POWER_OFF: 5479 hci_power_enter_halting_state(); 5480 break; 5481 case HCI_POWER_SLEEP: 5482 // do nothing 5483 break; 5484 default: 5485 btstack_assert(false); 5486 break; 5487 } 5488 return ERROR_CODE_SUCCESS; 5489 } 5490 5491 int hci_power_control(HCI_POWER_MODE power_mode){ 5492 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5493 btstack_run_loop_remove_timer(&hci_stack->timeout); 5494 int err = 0; 5495 switch (hci_stack->state){ 5496 case HCI_STATE_OFF: 5497 err = hci_power_control_state_off(power_mode); 5498 break; 5499 case HCI_STATE_INITIALIZING: 5500 err = hci_power_control_state_initializing(power_mode); 5501 break; 5502 case HCI_STATE_WORKING: 5503 err = hci_power_control_state_working(power_mode); 5504 break; 5505 case HCI_STATE_HALTING: 5506 err = hci_power_control_state_halting(power_mode); 5507 break; 5508 case HCI_STATE_FALLING_ASLEEP: 5509 err = hci_power_control_state_falling_asleep(power_mode); 5510 break; 5511 case HCI_STATE_SLEEPING: 5512 err = hci_power_control_state_sleeping(power_mode); 5513 break; 5514 default: 5515 btstack_assert(false); 5516 break; 5517 } 5518 if (err != 0){ 5519 return err; 5520 } 5521 5522 // create internal event 5523 hci_emit_state(); 5524 5525 // trigger next/first action 5526 hci_run(); 5527 5528 return 0; 5529 } 5530 5531 5532 static void hci_halting_run(void) { 5533 5534 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5535 5536 hci_connection_t *connection; 5537 #ifdef ENABLE_BLE 5538 #ifdef ENABLE_LE_PERIPHERAL 5539 bool stop_advertismenets; 5540 #endif 5541 #endif 5542 5543 switch (hci_stack->substate) { 5544 case HCI_HALTING_CLASSIC_STOP: 5545 #ifdef ENABLE_CLASSIC 5546 if (!hci_can_send_command_packet_now()) return; 5547 5548 if (hci_stack->connectable || hci_stack->discoverable){ 5549 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5550 hci_send_cmd(&hci_write_scan_enable, 0); 5551 return; 5552 } 5553 #endif 5554 /* fall through */ 5555 5556 case HCI_HALTING_LE_ADV_STOP: 5557 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5558 5559 #ifdef ENABLE_BLE 5560 #ifdef ENABLE_LE_PERIPHERAL 5561 if (!hci_can_send_command_packet_now()) return; 5562 5563 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5564 5565 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5566 if (hci_le_extended_advertising_supported()){ 5567 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5568 btstack_linked_list_iterator_t it; 5569 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5570 // stop all periodic advertisements and check if an extended set is active 5571 while (btstack_linked_list_iterator_has_next(&it)){ 5572 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5573 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5574 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5575 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5576 return; 5577 } 5578 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5579 stop_advertismenets = true; 5580 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5581 } 5582 } 5583 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5584 if (stop_advertismenets){ 5585 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5586 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5587 return; 5588 } 5589 } else 5590 #else /* ENABLE_LE_PERIPHERAL */ 5591 { 5592 if (stop_advertismenets) { 5593 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5594 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5595 return; 5596 } 5597 } 5598 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5599 #endif /* ENABLE_LE_PERIPHERAL */ 5600 #endif /* ENABLE_BLE */ 5601 5602 /* fall through */ 5603 5604 case HCI_HALTING_LE_SCAN_STOP: 5605 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5606 if (!hci_can_send_command_packet_now()) return; 5607 5608 #ifdef ENABLE_BLE 5609 #ifdef ENABLE_LE_CENTRAL 5610 if (hci_stack->le_scanning_active){ 5611 hci_le_scan_stop(); 5612 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5613 return; 5614 } 5615 #endif 5616 #endif 5617 5618 /* fall through */ 5619 5620 case HCI_HALTING_DISCONNECT_ALL: 5621 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5622 if (!hci_can_send_command_packet_now()) return; 5623 5624 // close all open connections 5625 connection = (hci_connection_t *) hci_stack->connections; 5626 if (connection) { 5627 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5628 5629 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5630 5631 // check state 5632 switch(connection->state) { 5633 case SENT_DISCONNECT: 5634 case RECEIVED_DISCONNECTION_COMPLETE: 5635 // wait until connection is gone 5636 return; 5637 default: 5638 break; 5639 } 5640 5641 // finally, send the disconnect command 5642 connection->state = SENT_DISCONNECT; 5643 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5644 return; 5645 } 5646 5647 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5648 // stop BIGs and BIG Syncs 5649 if (hci_stack->le_audio_bigs != NULL){ 5650 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5651 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5652 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5653 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5654 return; 5655 } 5656 if (hci_stack->le_audio_big_syncs != NULL){ 5657 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5658 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5659 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5660 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5661 return; 5662 } 5663 #endif 5664 5665 btstack_run_loop_remove_timer(&hci_stack->timeout); 5666 5667 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5668 log_info("HCI_STATE_HALTING: wait 50 ms"); 5669 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5670 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5671 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5672 btstack_run_loop_add_timer(&hci_stack->timeout); 5673 break; 5674 5675 case HCI_HALTING_W4_CLOSE_TIMER: 5676 // keep waiting 5677 break; 5678 5679 case HCI_HALTING_CLOSE: 5680 // close left over connections (that had not been properly closed before) 5681 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5682 hci_discard_connections(); 5683 5684 log_info("HCI_STATE_HALTING, calling off"); 5685 5686 // switch mode 5687 hci_power_control_off(); 5688 5689 log_info("HCI_STATE_HALTING, emitting state"); 5690 hci_emit_state(); 5691 log_info("HCI_STATE_HALTING, done"); 5692 break; 5693 5694 default: 5695 break; 5696 } 5697 }; 5698 5699 static void hci_falling_asleep_run(void){ 5700 hci_connection_t * connection; 5701 switch(hci_stack->substate) { 5702 case HCI_FALLING_ASLEEP_DISCONNECT: 5703 log_info("HCI_STATE_FALLING_ASLEEP"); 5704 // close all open connections 5705 connection = (hci_connection_t *) hci_stack->connections; 5706 if (connection){ 5707 5708 // send disconnect 5709 if (!hci_can_send_command_packet_now()) return; 5710 5711 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5712 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5713 5714 // send disconnected event right away - causes higher layer connections to get closed, too. 5715 hci_shutdown_connection(connection); 5716 return; 5717 } 5718 5719 if (hci_classic_supported()){ 5720 // disable page and inquiry scan 5721 if (!hci_can_send_command_packet_now()) return; 5722 5723 log_info("HCI_STATE_HALTING, disabling inq scans"); 5724 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5725 5726 // continue in next sub state 5727 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5728 break; 5729 } 5730 5731 /* fall through */ 5732 5733 case HCI_FALLING_ASLEEP_COMPLETE: 5734 log_info("HCI_STATE_HALTING, calling sleep"); 5735 // switch mode 5736 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5737 hci_emit_state(); 5738 break; 5739 5740 default: 5741 break; 5742 } 5743 } 5744 5745 #ifdef ENABLE_CLASSIC 5746 5747 static void hci_update_scan_enable(void){ 5748 // 2 = page scan, 1 = inq scan 5749 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5750 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5751 hci_run(); 5752 } 5753 5754 void gap_discoverable_control(uint8_t enable){ 5755 if (enable) enable = 1; // normalize argument 5756 5757 if (hci_stack->discoverable == enable){ 5758 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5759 return; 5760 } 5761 5762 hci_stack->discoverable = enable; 5763 hci_update_scan_enable(); 5764 } 5765 5766 void gap_connectable_control(uint8_t enable){ 5767 if (enable) enable = 1; // normalize argument 5768 5769 // don't emit event 5770 if (hci_stack->connectable == enable) return; 5771 5772 hci_stack->connectable = enable; 5773 hci_update_scan_enable(); 5774 } 5775 #endif 5776 5777 void gap_local_bd_addr(bd_addr_t address_buffer){ 5778 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5779 } 5780 5781 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5782 static void hci_host_num_completed_packets(void){ 5783 5784 // create packet manually as arrays are not supported and num_commands should not get reduced 5785 hci_reserve_packet_buffer(); 5786 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5787 5788 uint16_t size = 0; 5789 uint16_t num_handles = 0; 5790 packet[size++] = 0x35; 5791 packet[size++] = 0x0c; 5792 size++; // skip param len 5793 size++; // skip num handles 5794 5795 // add { handle, packets } entries 5796 btstack_linked_item_t * it; 5797 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5798 hci_connection_t * connection = (hci_connection_t *) it; 5799 if (connection->num_packets_completed){ 5800 little_endian_store_16(packet, size, connection->con_handle); 5801 size += 2; 5802 little_endian_store_16(packet, size, connection->num_packets_completed); 5803 size += 2; 5804 // 5805 num_handles++; 5806 connection->num_packets_completed = 0; 5807 } 5808 } 5809 5810 packet[2] = size - 3; 5811 packet[3] = num_handles; 5812 5813 hci_stack->host_completed_packets = 0; 5814 5815 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5816 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5817 5818 // release packet buffer for synchronous transport implementations 5819 if (hci_transport_synchronous()){ 5820 hci_release_packet_buffer(); 5821 hci_emit_transport_packet_sent(); 5822 } 5823 } 5824 #endif 5825 5826 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5827 UNUSED(ds); 5828 hci_stack->substate = HCI_HALTING_CLOSE; 5829 hci_halting_run(); 5830 } 5831 5832 static bool hci_run_acl_fragments(void){ 5833 if (hci_stack->acl_fragmentation_total_size > 0u) { 5834 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5835 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5836 if (connection) { 5837 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5838 hci_send_acl_packet_fragments(connection); 5839 return true; 5840 } 5841 } else { 5842 // connection gone -> discard further fragments 5843 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5844 hci_stack->acl_fragmentation_total_size = 0; 5845 hci_stack->acl_fragmentation_pos = 0; 5846 } 5847 } 5848 return false; 5849 } 5850 5851 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5852 static bool hci_run_iso_fragments(void){ 5853 if (hci_stack->iso_fragmentation_total_size > 0u) { 5854 // TODO: flow control 5855 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5856 hci_send_iso_packet_fragments(); 5857 return true; 5858 } 5859 } 5860 return false; 5861 } 5862 #endif 5863 5864 #ifdef ENABLE_CLASSIC 5865 5866 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5867 static bool hci_classic_operation_active(void) { 5868 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5869 return true; 5870 } 5871 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5872 return true; 5873 } 5874 btstack_linked_item_t * it; 5875 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5876 hci_connection_t *connection = (hci_connection_t *) it; 5877 switch (connection->state) { 5878 case SENT_CREATE_CONNECTION: 5879 case SENT_CANCEL_CONNECTION: 5880 case SENT_DISCONNECT: 5881 return true; 5882 default: 5883 break; 5884 } 5885 } 5886 return false; 5887 } 5888 #endif 5889 5890 static bool hci_run_general_gap_classic(void){ 5891 5892 // assert stack is working and classic is active 5893 if (hci_classic_supported() == false) return false; 5894 if (hci_stack->state != HCI_STATE_WORKING) return false; 5895 5896 // decline incoming connections 5897 if (hci_stack->decline_reason){ 5898 uint8_t reason = hci_stack->decline_reason; 5899 hci_stack->decline_reason = 0; 5900 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5901 return true; 5902 } 5903 5904 if (hci_stack->gap_tasks_classic != 0){ 5905 hci_run_gap_tasks_classic(); 5906 return true; 5907 } 5908 5909 // start/stop inquiry 5910 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5911 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5912 if (hci_classic_operation_active() == false) 5913 #endif 5914 { 5915 uint8_t duration = hci_stack->inquiry_state; 5916 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5917 if (hci_stack->inquiry_max_period_length != 0){ 5918 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); 5919 } else { 5920 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5921 } 5922 return true; 5923 } 5924 } 5925 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5926 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5927 hci_send_cmd(&hci_inquiry_cancel); 5928 return true; 5929 } 5930 5931 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5932 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5933 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5934 return true; 5935 } 5936 5937 // remote name request 5938 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5939 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5940 if (hci_classic_operation_active() == false) 5941 #endif 5942 { 5943 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5944 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5945 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5946 return true; 5947 } 5948 } 5949 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5950 // Local OOB data 5951 if (hci_stack->classic_read_local_oob_data){ 5952 hci_stack->classic_read_local_oob_data = false; 5953 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5954 hci_send_cmd(&hci_read_local_extended_oob_data); 5955 } else { 5956 hci_send_cmd(&hci_read_local_oob_data); 5957 } 5958 } 5959 #endif 5960 // pairing 5961 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5962 uint8_t state = hci_stack->gap_pairing_state; 5963 uint8_t pin_code[PIN_CODE_LEN]; 5964 switch (state){ 5965 case GAP_PAIRING_STATE_SEND_PIN: 5966 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5967 memset(pin_code, 0, 16); 5968 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5969 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5970 break; 5971 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5972 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5973 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5974 break; 5975 case GAP_PAIRING_STATE_SEND_PASSKEY: 5976 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5977 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5978 break; 5979 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5980 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5981 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5982 break; 5983 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5984 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5985 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5986 break; 5987 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5988 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5989 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5990 break; 5991 default: 5992 break; 5993 } 5994 return true; 5995 } 5996 return false; 5997 } 5998 #endif 5999 6000 #ifdef ENABLE_BLE 6001 6002 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6003 static uint8_t hci_le_num_phys(uint8_t phys){ 6004 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 6005 btstack_assert(phys); 6006 return num_bits_set[phys]; 6007 } 6008 #endif 6009 6010 #ifdef ENABLE_LE_CENTRAL 6011 static void hci_le_scan_stop(void){ 6012 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6013 if (hci_le_extended_advertising_supported()) { 6014 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 6015 } else 6016 #endif 6017 { 6018 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 6019 } 6020 } 6021 6022 static void 6023 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 6024 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6025 if (hci_le_extended_advertising_supported()) { 6026 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6027 uint16_t le_connection_scan_interval[3]; 6028 uint16_t le_connection_scan_window[3]; 6029 uint16_t le_connection_interval_min[3]; 6030 uint16_t le_connection_interval_max[3]; 6031 uint16_t le_connection_latency[3]; 6032 uint16_t le_supervision_timeout[3]; 6033 uint16_t le_minimum_ce_length[3]; 6034 uint16_t le_maximum_ce_length[3]; 6035 6036 uint8_t i; 6037 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6038 for (i=0;i<num_phys;i++){ 6039 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6040 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6041 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6042 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6043 le_connection_latency[i] = hci_stack->le_connection_latency; 6044 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6045 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6046 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6047 } 6048 hci_send_cmd(&hci_le_extended_create_connection, 6049 initiator_filter_policy, 6050 hci_stack->le_connection_own_addr_type, // our addr type: 6051 address_type, // peer address type 6052 address, // peer bd addr 6053 hci_stack->le_connection_phys, // initiating PHY 6054 le_connection_scan_interval, // conn scan interval 6055 le_connection_scan_window, // conn scan windows 6056 le_connection_interval_min, // conn interval min 6057 le_connection_interval_max, // conn interval max 6058 le_connection_latency, // conn latency 6059 le_supervision_timeout, // conn latency 6060 le_minimum_ce_length, // min ce length 6061 le_maximum_ce_length // max ce length 6062 ); 6063 } else 6064 #endif 6065 { 6066 hci_send_cmd(&hci_le_create_connection, 6067 hci_stack->le_connection_scan_interval, // conn scan interval 6068 hci_stack->le_connection_scan_window, // conn scan windows 6069 initiator_filter_policy, // don't use whitelist 6070 address_type, // peer address type 6071 address, // peer bd addr 6072 hci_stack->le_connection_own_addr_type, // our addr type: 6073 hci_stack->le_connection_interval_min, // conn interval min 6074 hci_stack->le_connection_interval_max, // conn interval max 6075 hci_stack->le_connection_latency, // conn latency 6076 hci_stack->le_supervision_timeout, // conn latency 6077 hci_stack->le_minimum_ce_length, // min ce length 6078 hci_stack->le_maximum_ce_length // max ce length 6079 ); 6080 } 6081 } 6082 #endif 6083 6084 #ifdef ENABLE_LE_PERIPHERAL 6085 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6086 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6087 uint8_t operation = 0; 6088 if (pos == 0){ 6089 // first fragment or complete data 6090 operation |= 1; 6091 } 6092 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6093 // last fragment or complete data 6094 operation |= 2; 6095 } 6096 return operation; 6097 } 6098 #endif 6099 #endif 6100 6101 static bool hci_whitelist_modification_pending(void) { 6102 btstack_linked_list_iterator_t it; 6103 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6104 while (btstack_linked_list_iterator_has_next(&it)){ 6105 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6106 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6107 return true; 6108 } 6109 } 6110 return false; 6111 } 6112 6113 static bool hci_whitelist_modification_process(void){ 6114 // add/remove entries 6115 btstack_linked_list_iterator_t it; 6116 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6117 while (btstack_linked_list_iterator_has_next(&it)){ 6118 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6119 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6120 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6121 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6122 bd_addr_type_t address_type = entry->address_type; 6123 bd_addr_t address; 6124 memcpy(address, entry->address, 6); 6125 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6126 // remove from whitelist if not scheduled for re-addition 6127 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6128 btstack_memory_whitelist_entry_free(entry); 6129 } 6130 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6131 return true; 6132 } 6133 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6134 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6135 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6136 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6137 return true; 6138 } 6139 } 6140 return false; 6141 } 6142 6143 static bool hci_run_general_gap_le(void){ 6144 6145 btstack_linked_list_iterator_t lit; 6146 UNUSED(lit); 6147 6148 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6149 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6150 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6151 hci_stack->le_resolvable_private_address_update_s = 0; 6152 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6153 return true; 6154 } 6155 #endif 6156 6157 // Phase 1: collect what to stop 6158 6159 #ifdef ENABLE_LE_CENTRAL 6160 bool scanning_stop = false; 6161 bool connecting_stop = false; 6162 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6163 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6164 bool periodic_sync_stop = false; 6165 #endif 6166 #endif 6167 #endif 6168 6169 #ifdef ENABLE_LE_PERIPHERAL 6170 bool advertising_stop = false; 6171 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6172 le_advertising_set_t * advertising_stop_set = NULL; 6173 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6174 bool periodic_advertising_stop = false; 6175 #endif 6176 #endif 6177 #endif 6178 6179 // check if own address changes 6180 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6181 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6182 6183 // check if whitelist needs modification 6184 bool whitelist_modification_pending = hci_whitelist_modification_pending(); 6185 6186 // check if resolving list needs modification 6187 bool resolving_list_modification_pending = false; 6188 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6189 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6190 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6191 resolving_list_modification_pending = true; 6192 } 6193 #endif 6194 6195 #ifdef ENABLE_LE_CENTRAL 6196 6197 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6198 // check if periodic advertiser list needs modification 6199 bool periodic_list_modification_pending = false; 6200 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6201 while (btstack_linked_list_iterator_has_next(&lit)){ 6202 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6203 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6204 periodic_list_modification_pending = true; 6205 break; 6206 } 6207 } 6208 #endif 6209 6210 // scanning control 6211 if (hci_stack->le_scanning_active) { 6212 // stop if: 6213 // - parameter change required 6214 // - it's disabled 6215 // - whitelist change required but used for scanning 6216 // - resolving list modified 6217 // - own address changes 6218 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6219 if ((hci_stack->le_scanning_param_update) || 6220 !hci_stack->le_scanning_enabled || 6221 (scanning_uses_whitelist && whitelist_modification_pending) || 6222 resolving_list_modification_pending || 6223 random_address_change){ 6224 6225 scanning_stop = true; 6226 } 6227 } 6228 6229 // connecting control 6230 bool connecting_with_whitelist; 6231 switch (hci_stack->le_connecting_state){ 6232 case LE_CONNECTING_DIRECT: 6233 case LE_CONNECTING_WHITELIST: 6234 // stop connecting if: 6235 // - connecting uses white and whitelist modification pending 6236 // - if it got disabled 6237 // - resolving list modified 6238 // - own address changes 6239 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6240 if ((connecting_with_whitelist && whitelist_modification_pending) || 6241 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6242 resolving_list_modification_pending || 6243 random_address_change) { 6244 6245 connecting_stop = true; 6246 } 6247 break; 6248 default: 6249 break; 6250 } 6251 6252 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6253 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6254 // periodic sync control 6255 bool sync_with_advertiser_list; 6256 switch(hci_stack->le_periodic_sync_state){ 6257 case LE_CONNECTING_DIRECT: 6258 case LE_CONNECTING_WHITELIST: 6259 // stop sync if: 6260 // - sync with advertiser list and advertiser list modification pending 6261 // - if it got disabled 6262 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6263 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6264 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6265 periodic_sync_stop = true; 6266 } 6267 break; 6268 default: 6269 break; 6270 } 6271 #endif 6272 #endif 6273 6274 #endif /* ENABLE_LE_CENTRAL */ 6275 6276 #ifdef ENABLE_LE_PERIPHERAL 6277 // le advertisement control 6278 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6279 // stop if: 6280 // - parameter change required 6281 // - random address used in advertising and changes 6282 // - it's disabled 6283 // - whitelist change required but used for advertisement filter policy 6284 // - resolving list modified 6285 // - own address changes 6286 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6287 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6288 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6289 if (advertising_change || 6290 (advertising_uses_random_address && random_address_change) || 6291 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6292 (advertising_uses_whitelist && whitelist_modification_pending) || 6293 resolving_list_modification_pending || 6294 random_address_change) { 6295 6296 advertising_stop = true; 6297 } 6298 } 6299 6300 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6301 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6302 btstack_linked_list_iterator_t it; 6303 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6304 while (btstack_linked_list_iterator_has_next(&it)){ 6305 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6306 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6307 // stop if: 6308 // - parameter change required 6309 // - random address used in connectable advertising and changes 6310 // - it's disabled 6311 // - whitelist change required but used for advertisement filter policy 6312 // - resolving list modified 6313 // - own address changes 6314 // - advertisement set will be removed 6315 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6316 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6317 bool advertising_uses_random_address = 6318 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6319 advertising_connectable; 6320 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6321 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6322 bool advertising_set_random_address_change = 6323 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6324 bool advertising_set_will_be_removed = 6325 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6326 if (advertising_parameter_change || 6327 (advertising_uses_random_address && advertising_set_random_address_change) || 6328 (advertising_enabled == false) || 6329 (advertising_uses_whitelist && whitelist_modification_pending) || 6330 resolving_list_modification_pending || 6331 advertising_set_will_be_removed) { 6332 6333 advertising_stop = true; 6334 advertising_stop_set = advertising_set; 6335 break; 6336 } 6337 } 6338 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6339 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6340 // stop if: 6341 // - it's disabled 6342 // - parameter change required 6343 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6344 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6345 if ((periodic_enabled == false) || periodic_parameter_change){ 6346 periodic_advertising_stop = true; 6347 advertising_stop_set = advertising_set; 6348 } 6349 } 6350 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6351 } 6352 } 6353 #endif 6354 6355 #endif 6356 6357 6358 // Phase 2: stop everything that should be off during modifications 6359 6360 6361 // 2.1 Outgoing connection 6362 #ifdef ENABLE_LE_CENTRAL 6363 if (connecting_stop){ 6364 hci_send_cmd(&hci_le_create_connection_cancel); 6365 return true; 6366 } 6367 #endif 6368 6369 // 2.2 Scanning 6370 #ifdef ENABLE_LE_CENTRAL 6371 if (scanning_stop){ 6372 hci_stack->le_scanning_active = false; 6373 hci_le_scan_stop(); 6374 return true; 6375 } 6376 6377 // 2.3 Periodic Sync 6378 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6379 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6380 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6381 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6382 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6383 return true; 6384 } 6385 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6386 if (periodic_sync_stop){ 6387 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6388 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6389 return true; 6390 } 6391 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6392 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6393 #endif /* ENABLE_LE_CENTRAL */ 6394 6395 // 2.4 Advertising: legacy, extended, periodic 6396 #ifdef ENABLE_LE_PERIPHERAL 6397 if (advertising_stop){ 6398 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6399 if (hci_le_extended_advertising_supported()) { 6400 uint8_t advertising_stop_handle; 6401 if (advertising_stop_set != NULL){ 6402 advertising_stop_handle = advertising_stop_set->advertising_handle; 6403 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6404 } else { 6405 advertising_stop_handle = 0; 6406 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6407 } 6408 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6409 const uint16_t durations[] = { 0 }; 6410 const uint16_t max_events[] = { 0 }; 6411 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6412 } else 6413 #endif 6414 { 6415 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6416 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6417 } 6418 return true; 6419 } 6420 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6421 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6422 if (periodic_advertising_stop){ 6423 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6424 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6425 return true; 6426 } 6427 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6428 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6429 #endif /* ENABLE_LE_PERIPHERAL */ 6430 6431 6432 // Phase 3: modify 6433 6434 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6435 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6436 // GAP Privacy, notify clients upon upcoming random address change 6437 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6438 // notify might cause hci_run to get executed, check if we still can send 6439 gap_privacy_clients_notify(hci_stack->le_random_address); 6440 if (!hci_can_send_command_packet_now()) { 6441 return true; 6442 } 6443 } 6444 6445 // - wait until privacy update completed 6446 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6447 return false; 6448 } 6449 6450 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6451 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6452 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6453 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6454 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6455 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6456 #endif 6457 return true; 6458 } 6459 6460 #ifdef ENABLE_LE_CENTRAL 6461 if (hci_stack->le_scanning_param_update){ 6462 hci_stack->le_scanning_param_update = false; 6463 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6464 if (hci_le_extended_advertising_supported()){ 6465 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6466 uint8_t scan_types[2]; 6467 uint16_t scan_intervals[2]; 6468 uint16_t scan_windows[2]; 6469 6470 uint8_t i; 6471 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6472 for (i=0;i<num_phys;i++){ 6473 scan_types[i] = hci_stack->le_scan_type; 6474 scan_intervals[i] = hci_stack->le_scan_interval; 6475 scan_windows[i] = hci_stack->le_scan_window; 6476 } 6477 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6478 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6479 } else 6480 #endif 6481 { 6482 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6483 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6484 } 6485 return true; 6486 } 6487 #endif 6488 6489 #ifdef ENABLE_LE_PERIPHERAL 6490 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6491 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6492 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6493 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6494 if (hci_le_extended_advertising_supported()){ 6495 // map advertisment type to advertising event properties 6496 uint16_t adv_event_properties = 0; 6497 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6498 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6499 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6500 } 6501 hci_stack->le_advertising_set_in_current_command = 0; 6502 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6503 0, 6504 adv_event_properties, 6505 hci_stack->le_advertisements_interval_min, 6506 hci_stack->le_advertisements_interval_max, 6507 hci_stack->le_advertisements_channel_map, 6508 hci_stack->le_advertisements_own_addr_type, 6509 hci_stack->le_advertisements_direct_address_type, 6510 hci_stack->le_advertisements_direct_address, 6511 hci_stack->le_advertisements_filter_policy, 6512 0x7f, // tx power: no preference 6513 0x01, // primary adv phy: LE 1M 6514 0, // secondary adv max skip 6515 0x01, // secondary adv phy 6516 0, // adv sid 6517 0 // scan request notification 6518 ); 6519 } else 6520 #endif 6521 { 6522 hci_send_cmd(&hci_le_set_advertising_parameters, 6523 hci_stack->le_advertisements_interval_min, 6524 hci_stack->le_advertisements_interval_max, 6525 hci_stack->le_advertisements_type, 6526 hci_stack->le_advertisements_own_addr_type, 6527 hci_stack->le_advertisements_direct_address_type, 6528 hci_stack->le_advertisements_direct_address, 6529 hci_stack->le_advertisements_channel_map, 6530 hci_stack->le_advertisements_filter_policy); 6531 } 6532 return true; 6533 } 6534 6535 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6536 // assumption: only set if extended advertising is supported 6537 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6538 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6539 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6540 return true; 6541 } 6542 #endif 6543 6544 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6545 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6546 uint8_t adv_data_clean[31]; 6547 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6548 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6549 hci_stack->le_advertisements_data_len); 6550 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6551 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6552 if (hci_le_extended_advertising_supported()){ 6553 hci_stack->le_advertising_set_in_current_command = 0; 6554 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6555 } else 6556 #endif 6557 { 6558 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6559 } 6560 return true; 6561 } 6562 6563 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6564 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6565 uint8_t scan_data_clean[31]; 6566 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6567 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6568 hci_stack->le_scan_response_data_len); 6569 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6570 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6571 if (hci_le_extended_advertising_supported()){ 6572 hci_stack->le_advertising_set_in_current_command = 0; 6573 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6574 } else 6575 #endif 6576 { 6577 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6578 } 6579 return true; 6580 } 6581 6582 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6583 if (hci_le_extended_advertising_supported()) { 6584 btstack_linked_list_iterator_t it; 6585 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6586 while (btstack_linked_list_iterator_has_next(&it)){ 6587 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6588 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6589 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6590 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6591 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6592 return true; 6593 } 6594 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6595 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6596 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6597 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6598 advertising_set->advertising_handle, 6599 advertising_set->extended_params.advertising_event_properties, 6600 advertising_set->extended_params.primary_advertising_interval_min, 6601 advertising_set->extended_params.primary_advertising_interval_max, 6602 advertising_set->extended_params.primary_advertising_channel_map, 6603 advertising_set->extended_params.own_address_type, 6604 advertising_set->extended_params.peer_address_type, 6605 advertising_set->extended_params.peer_address, 6606 advertising_set->extended_params.advertising_filter_policy, 6607 advertising_set->extended_params.advertising_tx_power, 6608 advertising_set->extended_params.primary_advertising_phy, 6609 advertising_set->extended_params.secondary_advertising_max_skip, 6610 advertising_set->extended_params.secondary_advertising_phy, 6611 advertising_set->extended_params.advertising_sid, 6612 advertising_set->extended_params.scan_request_notification_enable 6613 ); 6614 return true; 6615 } 6616 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6617 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6618 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6619 return true; 6620 } 6621 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6622 uint16_t pos = advertising_set->adv_data_pos; 6623 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6624 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6625 if ((operation & 0x02) != 0){ 6626 // last fragment or complete data 6627 operation |= 2; 6628 advertising_set->adv_data_pos = 0; 6629 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6630 } else { 6631 advertising_set->adv_data_pos += data_to_upload; 6632 } 6633 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6634 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6635 return true; 6636 } 6637 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6638 uint16_t pos = advertising_set->scan_data_pos; 6639 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6640 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6641 if ((operation & 0x02) != 0){ 6642 advertising_set->scan_data_pos = 0; 6643 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6644 } else { 6645 advertising_set->scan_data_pos += data_to_upload; 6646 } 6647 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6648 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6649 return true; 6650 } 6651 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6652 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6653 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6654 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6655 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6656 advertising_set->advertising_handle, 6657 advertising_set->periodic_params.periodic_advertising_interval_min, 6658 advertising_set->periodic_params.periodic_advertising_interval_max, 6659 advertising_set->periodic_params.periodic_advertising_properties); 6660 return true; 6661 } 6662 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6663 uint16_t pos = advertising_set->periodic_data_pos; 6664 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6665 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6666 if ((operation & 0x02) != 0){ 6667 // last fragment or complete data 6668 operation |= 2; 6669 advertising_set->periodic_data_pos = 0; 6670 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6671 } else { 6672 advertising_set->periodic_data_pos += data_to_upload; 6673 } 6674 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6675 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6676 return true; 6677 } 6678 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6679 } 6680 } 6681 #endif 6682 6683 #endif 6684 6685 #ifdef ENABLE_LE_CENTRAL 6686 // if connect with whitelist was active and is not cancelled yet, wait until next time 6687 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6688 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6689 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6690 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6691 #endif 6692 #endif 6693 6694 // LE Whitelist Management 6695 if (whitelist_modification_pending){ 6696 bool done = hci_whitelist_modification_process(); 6697 if (done) return true; 6698 } 6699 6700 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6701 // LE Resolving List Management 6702 if (resolving_list_modification_pending) { 6703 uint16_t i; 6704 uint8_t null_16[16]; 6705 uint8_t local_irk_flipped[16]; 6706 const uint8_t *local_irk; 6707 switch (hci_stack->le_resolving_list_state) { 6708 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6709 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6710 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6711 return true; 6712 case LE_RESOLVING_LIST_READ_SIZE: 6713 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6714 hci_send_cmd(&hci_le_read_resolving_list_size); 6715 return true; 6716 case LE_RESOLVING_LIST_SEND_CLEAR: 6717 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6718 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6719 sizeof(hci_stack->le_resolving_list_add_entries)); 6720 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6721 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6722 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6723 sizeof(hci_stack->le_resolving_list_remove_entries)); 6724 hci_send_cmd(&hci_le_clear_resolving_list); 6725 return true; 6726 case LE_RESOLVING_LIST_SET_IRK: 6727 // set IRK used by RPA for undirected advertising 6728 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6729 local_irk = gap_get_persistent_irk(); 6730 reverse_128(local_irk, local_irk_flipped); 6731 memset(null_16, 0, sizeof(null_16)); 6732 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6733 null_16, local_irk_flipped); 6734 return true; 6735 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6736 // first remove old entries 6737 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6738 uint8_t offset = i >> 3; 6739 uint8_t mask = 1 << (i & 7); 6740 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6741 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6742 bd_addr_t peer_identity_addreses; 6743 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6744 sm_key_t peer_irk; 6745 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6746 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6747 6748 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6749 // trigger whitelist entry 'update' (work around for controller bug) 6750 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6751 while (btstack_linked_list_iterator_has_next(&lit)) { 6752 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6753 if (entry->address_type != peer_identity_addr_type) continue; 6754 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6755 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6756 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6757 } 6758 #endif 6759 6760 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6761 peer_identity_addreses); 6762 return true; 6763 } 6764 6765 // then add new entries 6766 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6767 uint8_t offset = i >> 3; 6768 uint8_t mask = 1 << (i & 7); 6769 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6770 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6771 bd_addr_t peer_identity_addreses; 6772 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6773 sm_key_t peer_irk; 6774 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6775 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6776 if (btstack_is_null(peer_irk, 16)) continue; 6777 local_irk = gap_get_persistent_irk(); 6778 // command uses format specifier 'P' that stores 16-byte value without flip 6779 uint8_t peer_irk_flipped[16]; 6780 reverse_128(local_irk, local_irk_flipped); 6781 reverse_128(peer_irk, peer_irk_flipped); 6782 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6783 peer_irk_flipped, local_irk_flipped); 6784 return true; 6785 } 6786 6787 // finally, set privacy mode 6788 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6789 uint8_t offset = i >> 3; 6790 uint8_t mask = 1 << (i & 7); 6791 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6792 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6793 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6794 // Network Privacy Mode is default 6795 continue; 6796 } 6797 bd_addr_t peer_identity_address; 6798 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6799 sm_key_t peer_irk; 6800 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6801 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6802 if (btstack_is_null(peer_irk, 16)) continue; 6803 // command uses format specifier 'P' that stores 16-byte value without flip 6804 uint8_t peer_irk_flipped[16]; 6805 reverse_128(peer_irk, peer_irk_flipped); 6806 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6807 return true; 6808 } 6809 break; 6810 6811 default: 6812 break; 6813 } 6814 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6815 } 6816 #endif 6817 6818 #ifdef ENABLE_LE_CENTRAL 6819 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6820 // LE Whitelist Management 6821 if (periodic_list_modification_pending){ 6822 // add/remove entries 6823 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6824 while (btstack_linked_list_iterator_has_next(&lit)){ 6825 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6826 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6827 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6828 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6829 return true; 6830 } 6831 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6832 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6833 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6834 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6835 return true; 6836 } 6837 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6838 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6839 btstack_memory_periodic_advertiser_list_entry_free(entry); 6840 } 6841 } 6842 } 6843 #endif 6844 #endif 6845 6846 #ifdef ENABLE_LE_CENTRAL 6847 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6848 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6849 if (hci_stack->le_past_set_default_params){ 6850 hci_stack->le_past_set_default_params = false; 6851 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6852 hci_stack->le_past_mode, 6853 hci_stack->le_past_skip, 6854 hci_stack->le_past_sync_timeout, 6855 hci_stack->le_past_cte_type); 6856 return true; 6857 } 6858 #endif 6859 #endif 6860 #endif 6861 6862 // post-pone all actions until stack is fully working 6863 if (hci_stack->state != HCI_STATE_WORKING) return false; 6864 6865 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6866 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6867 6868 // Phase 4: restore state 6869 6870 #ifdef ENABLE_LE_CENTRAL 6871 // re-start scanning 6872 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6873 hci_stack->le_scanning_active = true; 6874 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6875 if (hci_le_extended_advertising_supported()){ 6876 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6877 } else 6878 #endif 6879 { 6880 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6881 } 6882 return true; 6883 } 6884 #endif 6885 6886 #ifdef ENABLE_LE_CENTRAL 6887 // re-start connecting 6888 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6889 bd_addr_t null_addr; 6890 memset(null_addr, 0, 6); 6891 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6892 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6893 hci_send_le_create_connection(1, 0, null_addr); 6894 return true; 6895 } 6896 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6897 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6898 switch(hci_stack->le_periodic_sync_request){ 6899 case LE_CONNECTING_DIRECT: 6900 case LE_CONNECTING_WHITELIST: 6901 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6902 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6903 hci_stack->le_periodic_sync_options, 6904 hci_stack->le_periodic_sync_advertising_sid, 6905 hci_stack->le_periodic_sync_advertiser_address_type, 6906 hci_stack->le_periodic_sync_advertiser_address, 6907 hci_stack->le_periodic_sync_skip, 6908 hci_stack->le_periodic_sync_timeout, 6909 hci_stack->le_periodic_sync_cte_type); 6910 return true; 6911 default: 6912 break; 6913 } 6914 } 6915 #endif 6916 #endif 6917 6918 #ifdef ENABLE_LE_PERIPHERAL 6919 // re-start advertising 6920 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6921 // check if advertisements should be enabled given 6922 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6923 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6924 6925 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6926 if (hci_le_extended_advertising_supported()){ 6927 const uint8_t advertising_handles[] = { 0 }; 6928 const uint16_t durations[] = { 0 }; 6929 const uint16_t max_events[] = { 0 }; 6930 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6931 } else 6932 #endif 6933 { 6934 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6935 } 6936 return true; 6937 } 6938 6939 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6940 if (hci_le_extended_advertising_supported()) { 6941 btstack_linked_list_iterator_t it; 6942 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6943 while (btstack_linked_list_iterator_has_next(&it)) { 6944 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6945 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6946 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6947 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6948 const uint16_t durations[] = { advertising_set->enable_timeout }; 6949 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6950 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6951 return true; 6952 } 6953 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6954 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6955 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6956 uint8_t enable = 1; 6957 if (advertising_set->periodic_include_adi){ 6958 enable |= 2; 6959 } 6960 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6961 return true; 6962 } 6963 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6964 } 6965 } 6966 #endif 6967 #endif 6968 6969 return false; 6970 } 6971 6972 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6973 static bool hci_run_iso_tasks(void){ 6974 btstack_linked_list_iterator_t it; 6975 6976 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6977 return false; 6978 } 6979 6980 // BIG 6981 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6982 while (btstack_linked_list_iterator_has_next(&it)){ 6983 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6984 switch (big->state){ 6985 case LE_AUDIO_BIG_STATE_CREATE: 6986 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6987 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6988 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6989 hci_send_cmd(&hci_le_create_big, 6990 big->params->big_handle, 6991 big->params->advertising_handle, 6992 big->params->num_bis, 6993 big->params->sdu_interval_us, 6994 big->params->max_sdu, 6995 big->params->max_transport_latency_ms, 6996 big->params->rtn, 6997 big->params->phy, 6998 big->params->packing, 6999 big->params->framing, 7000 big->params->encryption, 7001 big->params->broadcast_code); 7002 return true; 7003 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7004 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7005 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); 7006 return true; 7007 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7008 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7009 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 7010 return true; 7011 case LE_AUDIO_BIG_STATE_TERMINATE: 7012 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7013 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7014 return true; 7015 default: 7016 break; 7017 } 7018 } 7019 7020 // BIG Sync 7021 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 7022 while (btstack_linked_list_iterator_has_next(&it)){ 7023 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 7024 switch (big_sync->state){ 7025 case LE_AUDIO_BIG_STATE_CREATE: 7026 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 7027 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7028 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7029 hci_send_cmd(&hci_le_big_create_sync, 7030 big_sync->params->big_handle, 7031 big_sync->params->sync_handle, 7032 big_sync->params->encryption, 7033 big_sync->params->broadcast_code, 7034 big_sync->params->mse, 7035 big_sync->params->big_sync_timeout_10ms, 7036 big_sync->params->num_bis, 7037 big_sync->params->bis_indices); 7038 return true; 7039 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7040 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7041 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); 7042 return true; 7043 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7044 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7045 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7046 return true; 7047 case LE_AUDIO_BIG_STATE_TERMINATE: 7048 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7049 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7050 return true; 7051 default: 7052 break; 7053 } 7054 } 7055 7056 // CIG 7057 bool cig_active; 7058 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7059 while (btstack_linked_list_iterator_has_next(&it)) { 7060 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7061 uint8_t i; 7062 // Set CIG Parameters 7063 uint8_t cis_id[MAX_NR_CIS]; 7064 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7065 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7066 uint8_t phy_c_to_p[MAX_NR_CIS]; 7067 uint8_t phy_p_to_c[MAX_NR_CIS]; 7068 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7069 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7070 switch (cig->state) { 7071 case LE_AUDIO_CIG_STATE_CREATE: 7072 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7073 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7074 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7075 le_audio_cig_params_t * params = cig->params; 7076 for (i = 0; i < params->num_cis; i++) { 7077 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7078 cis_id[i] = cis_params->cis_id; 7079 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7080 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7081 phy_c_to_p[i] = cis_params->phy_c_to_p; 7082 phy_p_to_c[i] = cis_params->phy_p_to_c; 7083 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7084 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7085 } 7086 hci_send_cmd(&hci_le_set_cig_parameters, 7087 cig->cig_id, 7088 params->sdu_interval_c_to_p, 7089 params->sdu_interval_p_to_c, 7090 params->worst_case_sca, 7091 params->packing, 7092 params->framing, 7093 params->max_transport_latency_c_to_p, 7094 params->max_transport_latency_p_to_c, 7095 params->num_cis, 7096 cis_id, 7097 max_sdu_c_to_p, 7098 max_sdu_p_to_c, 7099 phy_c_to_p, 7100 phy_p_to_c, 7101 rtn_c_to_p, 7102 rtn_p_to_c 7103 ); 7104 return true; 7105 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7106 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7107 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7108 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7109 for (i=0;i<cig->num_cis;i++){ 7110 cig->cis_setup_active[i] = true; 7111 } 7112 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7113 return true; 7114 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7115 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7116 // find next path to setup 7117 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7118 if (cig->cis_established[cis_index] == false) { 7119 continue; 7120 } 7121 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7122 bool setup = true; 7123 if (cis_direction == 0){ 7124 // 0 - input - host to controller 7125 // we are central => central to peripheral 7126 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7127 } else { 7128 // 1 - output - controller to host 7129 // we are central => peripheral to central 7130 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7131 } 7132 if (setup){ 7133 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7134 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7135 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7136 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); 7137 return true; 7138 } 7139 cig->state_vars.next_cis++; 7140 } 7141 // emit done 7142 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7143 break; 7144 case LE_AUDIO_CIG_STATE_REMOVE: 7145 // check if CIG Active 7146 cig_active = false; 7147 for (i = 0; i < cig->num_cis; i++) { 7148 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7149 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7150 if (stream != NULL){ 7151 cig_active = true; 7152 break; 7153 } 7154 } 7155 } 7156 if (cig_active == false){ 7157 btstack_linked_list_iterator_remove(&it); 7158 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7159 return true; 7160 } 7161 default: 7162 break; 7163 } 7164 } 7165 7166 // CIS Accept/Reject/Setup ISO Path/Close 7167 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7168 while (btstack_linked_list_iterator_has_next(&it)) { 7169 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7170 hci_con_handle_t con_handle; 7171 switch (iso_stream->state){ 7172 case HCI_ISO_STREAM_W2_ACCEPT: 7173 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7174 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7175 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7176 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7177 return true; 7178 case HCI_ISO_STREAM_W2_REJECT: 7179 con_handle = iso_stream->cis_handle; 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_iso_stream_finalize(iso_stream); 7183 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7184 return true; 7185 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7186 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7187 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7188 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7189 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); 7190 return true; 7191 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 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_OUTPUT; 7195 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); 7196 return true; 7197 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7198 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7199 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7200 return true; 7201 default: 7202 break; 7203 } 7204 } 7205 7206 return false; 7207 } 7208 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7209 #endif 7210 7211 static bool hci_run_general_pending_commands(void){ 7212 btstack_linked_item_t * it; 7213 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7214 hci_connection_t * connection = (hci_connection_t *) it; 7215 7216 switch(connection->state){ 7217 case SEND_CREATE_CONNECTION: 7218 switch(connection->address_type){ 7219 #ifdef ENABLE_CLASSIC 7220 case BD_ADDR_TYPE_ACL: 7221 log_info("sending hci_create_connection"); 7222 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7223 break; 7224 #endif 7225 default: 7226 #ifdef ENABLE_BLE 7227 #ifdef ENABLE_LE_CENTRAL 7228 log_info("sending hci_le_create_connection"); 7229 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7230 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7231 hci_send_le_create_connection(0, connection->address_type, connection->address); 7232 connection->state = SENT_CREATE_CONNECTION; 7233 #endif 7234 #endif 7235 break; 7236 } 7237 return true; 7238 7239 #ifdef ENABLE_CLASSIC 7240 case RECEIVED_CONNECTION_REQUEST: 7241 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7242 log_info("sending hci_accept_connection_request"); 7243 connection->state = ACCEPTED_CONNECTION_REQUEST; 7244 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7245 return true; 7246 } 7247 break; 7248 #endif 7249 case SEND_DISCONNECT: 7250 connection->state = SENT_DISCONNECT; 7251 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7252 return true; 7253 7254 default: 7255 break; 7256 } 7257 7258 // no further commands if connection is about to get shut down 7259 if (connection->state == SENT_DISCONNECT) continue; 7260 7261 #ifdef ENABLE_CLASSIC 7262 7263 // Handling link key request requires remote supported features 7264 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7265 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7266 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7267 7268 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7269 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7270 if (have_link_key && security_level_sufficient){ 7271 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7272 } else { 7273 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7274 } 7275 return true; 7276 } 7277 7278 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7279 log_info("denying to pin request"); 7280 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7281 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7282 return true; 7283 } 7284 7285 // security assessment requires remote features 7286 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7287 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7288 hci_ssp_assess_security_on_io_cap_request(connection); 7289 // 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 7290 } 7291 7292 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7293 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7294 // set authentication requirements: 7295 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7296 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7297 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7298 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7299 authreq |= 1; 7300 } 7301 bool bonding = hci_stack->bondable; 7302 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7303 // if we have received IO Cap Response, we're in responder role 7304 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7305 if (bonding && !remote_bonding){ 7306 log_info("Remote not bonding, dropping local flag"); 7307 bonding = false; 7308 } 7309 } 7310 if (bonding){ 7311 if (connection->bonding_flags & BONDING_DEDICATED){ 7312 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7313 } else { 7314 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7315 } 7316 } 7317 uint8_t have_oob_data = 0; 7318 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7319 if (connection->classic_oob_c_192 != NULL){ 7320 have_oob_data |= 1; 7321 } 7322 if (connection->classic_oob_c_256 != NULL){ 7323 have_oob_data |= 2; 7324 } 7325 #endif 7326 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7327 return true; 7328 } 7329 7330 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7331 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7332 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7333 return true; 7334 } 7335 7336 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7337 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7338 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7339 const uint8_t zero[16] = { 0 }; 7340 const uint8_t * r_192 = zero; 7341 const uint8_t * c_192 = zero; 7342 const uint8_t * r_256 = zero; 7343 const uint8_t * c_256 = zero; 7344 // verify P-256 OOB 7345 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7346 c_256 = connection->classic_oob_c_256; 7347 if (connection->classic_oob_r_256 != NULL) { 7348 r_256 = connection->classic_oob_r_256; 7349 } 7350 } 7351 // verify P-192 OOB 7352 if ((connection->classic_oob_c_192 != NULL)) { 7353 c_192 = connection->classic_oob_c_192; 7354 if (connection->classic_oob_r_192 != NULL) { 7355 r_192 = connection->classic_oob_r_192; 7356 } 7357 } 7358 7359 // assess security 7360 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7361 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7362 if (need_level_4 && !can_reach_level_4){ 7363 log_info("Level 4 required, but not possible -> abort"); 7364 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7365 // send oob negative reply 7366 c_256 = NULL; 7367 c_192 = NULL; 7368 } 7369 7370 // Reply 7371 if (c_256 != zero) { 7372 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7373 } else if (c_192 != zero){ 7374 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7375 } else { 7376 hci_stack->classic_oob_con_handle = connection->con_handle; 7377 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7378 } 7379 return true; 7380 } 7381 #endif 7382 7383 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7384 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7385 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7386 return true; 7387 } 7388 7389 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7390 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7391 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7392 return true; 7393 } 7394 7395 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7396 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7397 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7398 return true; 7399 } 7400 7401 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7402 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7403 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7404 connection->state = SENT_DISCONNECT; 7405 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7406 return true; 7407 } 7408 7409 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7410 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7411 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7412 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7413 return true; 7414 } 7415 7416 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7417 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7418 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7419 return true; 7420 } 7421 7422 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7423 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7424 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7425 return true; 7426 } 7427 7428 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7429 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7430 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7431 return true; 7432 } 7433 7434 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7435 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7436 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7437 return true; 7438 } 7439 7440 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7441 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7442 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7443 return true; 7444 } 7445 #endif 7446 7447 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7448 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7449 #ifdef ENABLE_CLASSIC 7450 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7451 #endif 7452 if (connection->state != SENT_DISCONNECT){ 7453 connection->state = SENT_DISCONNECT; 7454 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7455 return true; 7456 } 7457 } 7458 7459 #ifdef ENABLE_CLASSIC 7460 uint16_t sniff_min_interval; 7461 switch (connection->sniff_min_interval){ 7462 case 0: 7463 break; 7464 case 0xffff: 7465 connection->sniff_min_interval = 0; 7466 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7467 return true; 7468 default: 7469 sniff_min_interval = connection->sniff_min_interval; 7470 connection->sniff_min_interval = 0; 7471 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7472 return true; 7473 } 7474 7475 if (connection->sniff_subrating_max_latency != 0xffff){ 7476 uint16_t max_latency = connection->sniff_subrating_max_latency; 7477 connection->sniff_subrating_max_latency = 0; 7478 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7479 return true; 7480 } 7481 7482 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7483 uint8_t service_type = (uint8_t) connection->qos_service_type; 7484 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7485 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); 7486 return true; 7487 } 7488 7489 if (connection->request_role != HCI_ROLE_INVALID){ 7490 hci_role_t role = connection->request_role; 7491 connection->request_role = HCI_ROLE_INVALID; 7492 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7493 return true; 7494 } 7495 #endif 7496 7497 if (connection->gap_connection_tasks != 0){ 7498 #ifdef ENABLE_CLASSIC 7499 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7500 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7501 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7502 return true; 7503 } 7504 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7505 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7506 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7507 return true; 7508 } 7509 #endif 7510 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7511 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7512 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7513 return true; 7514 } 7515 #ifdef ENABLE_BLE 7516 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7517 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7518 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7519 return true; 7520 } 7521 #endif 7522 } 7523 7524 #ifdef ENABLE_BLE 7525 switch (connection->le_con_parameter_update_state){ 7526 // response to L2CAP CON PARAMETER UPDATE REQUEST 7527 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7528 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7529 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7530 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7531 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7532 return true; 7533 case CON_PARAMETER_UPDATE_REPLY: 7534 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7535 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, 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_NEGATIVE_REPLY: 7540 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7541 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7542 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7543 return true; 7544 default: 7545 break; 7546 } 7547 if (connection->le_phy_update_all_phys != 0xffu){ 7548 uint8_t all_phys = connection->le_phy_update_all_phys; 7549 connection->le_phy_update_all_phys = 0xff; 7550 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); 7551 return true; 7552 } 7553 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7554 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7555 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7556 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7557 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7558 return true; 7559 } 7560 if (connection->le_past_advertising_handle != 0xff){ 7561 uint8_t advertising_handle = connection->le_past_advertising_handle; 7562 connection->le_past_advertising_handle = 0xff; 7563 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7564 return true; 7565 } 7566 #endif 7567 #endif 7568 } 7569 return false; 7570 } 7571 7572 static void hci_run(void){ 7573 7574 // stack state sub statemachines 7575 switch (hci_stack->state) { 7576 case HCI_STATE_INITIALIZING: 7577 hci_initializing_run(); 7578 break; 7579 case HCI_STATE_HALTING: 7580 hci_halting_run(); 7581 break; 7582 case HCI_STATE_FALLING_ASLEEP: 7583 hci_falling_asleep_run(); 7584 break; 7585 default: 7586 break; 7587 } 7588 7589 // allow to run after initialization to working transition 7590 if (hci_stack->state != HCI_STATE_WORKING){ 7591 return; 7592 } 7593 7594 bool done; 7595 7596 // send continuation fragments first, as they block the prepared packet buffer 7597 done = hci_run_acl_fragments(); 7598 if (done) return; 7599 7600 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7601 done = hci_run_iso_fragments(); 7602 if (done) return; 7603 #endif 7604 7605 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7606 // send host num completed packets next as they don't require num_cmd_packets > 0 7607 if (!hci_can_send_comand_packet_transport()) return; 7608 if (hci_stack->host_completed_packets){ 7609 hci_host_num_completed_packets(); 7610 return; 7611 } 7612 #endif 7613 7614 if (!hci_can_send_command_packet_now()) return; 7615 7616 // global/non-connection oriented commands 7617 7618 7619 #ifdef ENABLE_CLASSIC 7620 // general gap classic 7621 done = hci_run_general_gap_classic(); 7622 if (done) return; 7623 #endif 7624 7625 #ifdef ENABLE_BLE 7626 // general gap le 7627 done = hci_run_general_gap_le(); 7628 if (done) return; 7629 7630 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7631 // ISO related tasks, e.g. BIG create/terminate/sync 7632 done = hci_run_iso_tasks(); 7633 if (done) return; 7634 #endif 7635 #endif 7636 7637 // send pending HCI commands 7638 hci_run_general_pending_commands(); 7639 } 7640 7641 #ifdef ENABLE_CLASSIC 7642 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7643 // bits 6-9 are 'don't use' 7644 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7645 7646 // restrict packet types to local and remote supported 7647 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7648 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7649 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7650 } 7651 #endif 7652 7653 // funnel for sending cmd packet using single outgoing buffer 7654 static uint8_t hci_send_prepared_cmd_packet(void) { 7655 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7656 // cache opcode 7657 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7658 // get size 7659 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7660 // send packet 7661 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7662 // release packet buffer on error or for synchronous transport implementations 7663 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7664 hci_release_packet_buffer(); 7665 } 7666 return status; 7667 } 7668 7669 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7670 // house-keeping 7671 7672 #ifdef ENABLE_CLASSIC 7673 bd_addr_t addr; 7674 hci_connection_t * conn; 7675 #endif 7676 #ifdef ENABLE_LE_CENTRAL 7677 uint8_t initiator_filter_policy; 7678 #endif 7679 7680 uint16_t opcode = little_endian_read_16(packet, 0); 7681 switch (opcode) { 7682 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7683 hci_stack->loopback_mode = packet[3]; 7684 break; 7685 7686 #ifdef ENABLE_CLASSIC 7687 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7688 reverse_bd_addr(&packet[3], addr); 7689 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7690 7691 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7692 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7693 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7694 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7695 } 7696 7697 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7698 if (!conn) { 7699 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7700 if (!conn) { 7701 // notify client that alloc failed 7702 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7703 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7704 } 7705 conn->state = SEND_CREATE_CONNECTION; 7706 } 7707 7708 log_info("conn state %u", conn->state); 7709 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7710 switch (conn->state) { 7711 // if connection active exists 7712 case OPEN: 7713 // and OPEN, emit connection complete command 7714 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7715 // packet not sent to controller 7716 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7717 case RECEIVED_DISCONNECTION_COMPLETE: 7718 // create connection triggered in disconnect complete event, let's do it now 7719 break; 7720 case SEND_CREATE_CONNECTION: 7721 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7722 if (hci_classic_operation_active()){ 7723 return ERROR_CODE_SUCCESS; 7724 } 7725 #endif 7726 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7727 break; 7728 default: 7729 // otherwise, just ignore as it is already in the open process 7730 // packet not sent to controller 7731 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7732 } 7733 conn->state = SENT_CREATE_CONNECTION; 7734 7735 // track outgoing connection 7736 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7737 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7738 break; 7739 7740 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7741 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7742 if (conn == NULL) { 7743 // neither SCO nor ACL connection for con handle 7744 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7745 } else { 7746 uint16_t remote_supported_sco_packets; 7747 switch (conn->address_type){ 7748 case BD_ADDR_TYPE_ACL: 7749 // assert SCO connection does not exit 7750 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7751 return ERROR_CODE_COMMAND_DISALLOWED; 7752 } 7753 // cache remote sco packet types 7754 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7755 7756 // allocate connection struct 7757 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7758 HCI_ROLE_MASTER); 7759 if (!conn) { 7760 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7761 } 7762 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7763 break; 7764 case BD_ADDR_TYPE_SCO: 7765 // update of existing SCO connection 7766 break; 7767 default: 7768 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7769 } 7770 } 7771 7772 // conn refers to hci connection of type sco now 7773 7774 conn->state = SENT_CREATE_CONNECTION; 7775 7776 // track outgoing connection to handle command status with error 7777 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7778 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7779 7780 // setup_synchronous_connection? Voice setting at offset 22 7781 // TODO: compare to current setting if sco connection already active 7782 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7783 7784 // derive sco payload length from packet types 7785 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7786 break; 7787 7788 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7789 // get SCO connection 7790 reverse_bd_addr(&packet[3], addr); 7791 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7792 if (conn == NULL){ 7793 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7794 } 7795 7796 conn->state = ACCEPTED_CONNECTION_REQUEST; 7797 7798 // track outgoing connection to handle command status with error 7799 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7800 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7801 7802 // accept_synchronous_connection? Voice setting at offset 18 7803 // TODO: compare to current setting if sco connection already active 7804 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7805 7806 // derive sco payload length from packet types 7807 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7808 break; 7809 #endif 7810 7811 #ifdef ENABLE_BLE 7812 #ifdef ENABLE_LE_CENTRAL 7813 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7814 // white list used? 7815 initiator_filter_policy = packet[7]; 7816 switch (initiator_filter_policy) { 7817 case 0: 7818 // whitelist not used 7819 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7820 break; 7821 case 1: 7822 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7823 break; 7824 default: 7825 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7826 break; 7827 } 7828 // track outgoing connection 7829 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7830 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7831 break; 7832 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7833 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7834 // white list used? 7835 initiator_filter_policy = packet[3]; 7836 switch (initiator_filter_policy) { 7837 case 0: 7838 // whitelist not used 7839 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7840 break; 7841 case 1: 7842 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7843 break; 7844 default: 7845 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7846 break; 7847 } 7848 // track outgoing connection 7849 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7850 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7851 break; 7852 #endif 7853 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7854 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7855 break; 7856 #endif 7857 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7858 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7859 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7860 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7861 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7862 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7863 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7864 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7865 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7866 case HCI_OPCODE_HCI_LE_READ_PHY: 7867 case HCI_OPCODE_HCI_LE_SET_PHY: 7868 // conection handle is first command parameter 7869 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7870 break; 7871 #endif 7872 #endif /* ENABLE_BLE */ 7873 default: 7874 break; 7875 } 7876 7877 hci_stack->num_cmd_packets--; 7878 7879 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7880 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7881 uint8_t status; 7882 if (err == 0){ 7883 status = ERROR_CODE_SUCCESS; 7884 } else { 7885 status = ERROR_CODE_HARDWARE_FAILURE; 7886 } 7887 return status; 7888 } 7889 7890 // disconnect because of security block 7891 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7892 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7893 if (!connection) return; 7894 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7895 } 7896 7897 7898 // Configure Secure Simple Pairing 7899 7900 #ifdef ENABLE_CLASSIC 7901 7902 // enable will enable SSP during init 7903 void gap_ssp_set_enable(int enable){ 7904 hci_stack->ssp_enable = enable; 7905 } 7906 7907 static int hci_local_ssp_activated(void){ 7908 return gap_ssp_supported() && hci_stack->ssp_enable; 7909 } 7910 7911 // if set, BTstack will respond to io capability request using authentication requirement 7912 void gap_ssp_set_io_capability(int io_capability){ 7913 hci_stack->ssp_io_capability = io_capability; 7914 } 7915 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7916 hci_stack->ssp_authentication_requirement = authentication_requirement; 7917 } 7918 7919 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7920 void gap_ssp_set_auto_accept(int auto_accept){ 7921 hci_stack->ssp_auto_accept = auto_accept; 7922 } 7923 7924 void gap_secure_connections_enable(bool enable){ 7925 hci_stack->secure_connections_enable = enable; 7926 } 7927 bool gap_secure_connections_active(void){ 7928 return hci_stack->secure_connections_active; 7929 } 7930 7931 #endif 7932 7933 // va_list part of hci_send_cmd 7934 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7935 if (!hci_can_send_command_packet_now()){ 7936 log_error("hci_send_cmd called but cannot send packet now"); 7937 return ERROR_CODE_COMMAND_DISALLOWED; 7938 } 7939 7940 hci_reserve_packet_buffer(); 7941 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7942 return hci_send_prepared_cmd_packet(); 7943 } 7944 7945 /** 7946 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7947 */ 7948 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7949 va_list argptr; 7950 va_start(argptr, cmd); 7951 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7952 va_end(argptr); 7953 return status; 7954 } 7955 7956 // Forward HCI events and create non-HCI events 7957 7958 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7959 // dump packet 7960 if (dump) { 7961 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7962 } 7963 7964 // dispatch to all event handlers 7965 btstack_linked_list_iterator_t it; 7966 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7967 while (btstack_linked_list_iterator_has_next(&it)){ 7968 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7969 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7970 } 7971 } 7972 7973 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump){ 7974 #ifndef ENABLE_LOG_BTSTACK_EVENTS 7975 dump = 0; 7976 #endif 7977 hci_emit_event(event, size, dump); 7978 } 7979 7980 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7981 if (!hci_stack->acl_packet_handler) return; 7982 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7983 } 7984 7985 #ifdef ENABLE_CLASSIC 7986 static void hci_notify_if_sco_can_send_now(void){ 7987 // notify SCO sender if waiting 7988 if (!hci_stack->sco_waiting_for_can_send_now) return; 7989 if (hci_can_send_sco_packet_now()){ 7990 hci_stack->sco_waiting_for_can_send_now = 0; 7991 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7992 hci_dump_btstack_event(event, sizeof(event)); 7993 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7994 } 7995 } 7996 7997 // parsing end emitting has been merged to reduce code size 7998 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7999 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 8000 8001 uint8_t * eir_data; 8002 ad_context_t context; 8003 const uint8_t * name; 8004 uint8_t name_len; 8005 8006 if (size < 3) return; 8007 8008 int event_type = hci_event_packet_get_type(packet); 8009 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 8010 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 8011 8012 switch (event_type){ 8013 case HCI_EVENT_INQUIRY_RESULT: 8014 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8015 if (size != (3 + (num_responses * 14))) return; 8016 break; 8017 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8018 if (size != 257) return; 8019 if (num_responses != 1) return; 8020 break; 8021 default: 8022 return; 8023 } 8024 8025 // event[1] is set at the end 8026 int i; 8027 for (i=0; i<num_responses;i++){ 8028 memset(event, 0, sizeof(event)); 8029 event[0] = GAP_EVENT_INQUIRY_RESULT; 8030 uint8_t event_size = 27; // if name is not set by EIR 8031 8032 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 8033 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 8034 (void)memcpy(&event[9], 8035 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 8036 3); // class of device 8037 (void)memcpy(&event[12], 8038 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 8039 2); // clock offset 8040 8041 switch (event_type){ 8042 case HCI_EVENT_INQUIRY_RESULT: 8043 // 14,15,16,17 = 0, size 18 8044 break; 8045 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8046 event[14] = 1; 8047 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8048 // 16,17 = 0, size 18 8049 break; 8050 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8051 event[14] = 1; 8052 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8053 // EIR packets only contain a single inquiry response 8054 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8055 name = NULL; 8056 // Iterate over EIR data 8057 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8058 uint8_t data_type = ad_iterator_get_data_type(&context); 8059 uint8_t data_size = ad_iterator_get_data_len(&context); 8060 const uint8_t * data = ad_iterator_get_data(&context); 8061 // Prefer Complete Local Name over Shortened Local Name 8062 switch (data_type){ 8063 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8064 if (name) continue; 8065 /* fall through */ 8066 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8067 name = data; 8068 name_len = data_size; 8069 break; 8070 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8071 if (data_size != 8) break; 8072 event[16] = 1; 8073 memcpy(&event[17], data, 8); 8074 break; 8075 default: 8076 break; 8077 } 8078 } 8079 if (name){ 8080 event[25] = 1; 8081 // truncate name if needed 8082 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8083 event[26] = len; 8084 (void)memcpy(&event[27], name, len); 8085 event_size += len; 8086 } 8087 break; 8088 default: 8089 return; 8090 } 8091 event[1] = event_size - 2; 8092 hci_emit_btstack_event(event, event_size, 1); 8093 } 8094 } 8095 #endif 8096 8097 void hci_emit_state(void){ 8098 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8099 uint8_t event[3]; 8100 event[0] = BTSTACK_EVENT_STATE; 8101 event[1] = sizeof(event) - 2u; 8102 event[2] = hci_stack->state; 8103 hci_emit_btstack_event(event, sizeof(event), 1); 8104 } 8105 8106 #ifdef ENABLE_CLASSIC 8107 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8108 uint8_t event[13]; 8109 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8110 event[1] = sizeof(event) - 2; 8111 event[2] = status; 8112 little_endian_store_16(event, 3, con_handle); 8113 reverse_bd_addr(address, &event[5]); 8114 event[11] = 1; // ACL connection 8115 event[12] = 0; // encryption disabled 8116 hci_emit_btstack_event(event, sizeof(event), 1); 8117 } 8118 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8119 if (disable_l2cap_timeouts) return; 8120 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8121 uint8_t event[4]; 8122 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8123 event[1] = sizeof(event) - 2; 8124 little_endian_store_16(event, 2, conn->con_handle); 8125 hci_emit_btstack_event(event, sizeof(event), 1); 8126 } 8127 #endif 8128 8129 #ifdef ENABLE_BLE 8130 #ifdef ENABLE_LE_CENTRAL 8131 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){ 8132 uint8_t hci_event[21]; 8133 hci_event[0] = HCI_EVENT_LE_META; 8134 hci_event[1] = sizeof(hci_event) - 2u; 8135 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8136 hci_event[3] = status; 8137 little_endian_store_16(hci_event, 4, con_handle); 8138 hci_event[6] = 0; // TODO: role 8139 hci_event[7] = address_type; 8140 reverse_bd_addr(address, &hci_event[8]); 8141 little_endian_store_16(hci_event, 14, 0); // interval 8142 little_endian_store_16(hci_event, 16, 0); // latency 8143 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8144 hci_event[20] = 0; // master clock accuracy 8145 hci_emit_btstack_event(hci_event, sizeof(hci_event), 1); 8146 // emit GAP event, too 8147 uint8_t gap_event[36]; 8148 hci_create_gap_connection_complete_event(hci_event, gap_event); 8149 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 8150 } 8151 #endif 8152 #endif 8153 8154 static void hci_emit_transport_packet_sent(void){ 8155 // notify upper stack that it might be possible to send again 8156 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8157 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 8158 } 8159 8160 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8161 uint8_t event[6]; 8162 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8163 event[1] = sizeof(event) - 2u; 8164 event[2] = 0; // status = OK 8165 little_endian_store_16(event, 3, con_handle); 8166 event[5] = reason; 8167 hci_emit_btstack_event(event, sizeof(event), 1); 8168 } 8169 8170 static void hci_emit_nr_connections_changed(void){ 8171 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8172 uint8_t event[3]; 8173 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8174 event[1] = sizeof(event) - 2u; 8175 event[2] = nr_hci_connections(); 8176 hci_emit_btstack_event(event, sizeof(event), 1); 8177 } 8178 8179 static void hci_emit_hci_open_failed(void){ 8180 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8181 uint8_t event[2]; 8182 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8183 event[1] = sizeof(event) - 2u; 8184 hci_emit_btstack_event(event, sizeof(event), 1); 8185 } 8186 8187 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8188 log_info("hci_emit_dedicated_bonding_result %u ", status); 8189 uint8_t event[9]; 8190 int pos = 0; 8191 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8192 event[pos++] = sizeof(event) - 2u; 8193 event[pos++] = status; 8194 reverse_bd_addr(address, &event[pos]); 8195 hci_emit_btstack_event(event, sizeof(event), 1); 8196 } 8197 8198 8199 #ifdef ENABLE_CLASSIC 8200 8201 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8202 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8203 uint8_t event[5]; 8204 int pos = 0; 8205 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8206 event[pos++] = sizeof(event) - 2; 8207 little_endian_store_16(event, 2, con_handle); 8208 pos += 2; 8209 event[pos++] = level; 8210 hci_emit_btstack_event(event, sizeof(event), 1); 8211 } 8212 8213 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8214 if (!connection) return LEVEL_0; 8215 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8216 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8217 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8218 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8219 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8220 // LEVEL 4 always requires 128 bit encrytion key size 8221 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8222 security_level = LEVEL_3; 8223 } 8224 return security_level; 8225 } 8226 8227 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8228 uint8_t event[4]; 8229 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8230 event[1] = sizeof(event) - 2; 8231 event[2] = discoverable; 8232 event[3] = connectable; 8233 hci_emit_btstack_event(event, sizeof(event), 1); 8234 } 8235 8236 // query if remote side supports eSCO 8237 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8238 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8239 if (!connection) return false; 8240 return (connection->remote_supported_features[0] & 1) != 0; 8241 } 8242 8243 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8244 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8245 if (!connection) return 0; 8246 return connection->remote_supported_sco_packets; 8247 } 8248 8249 static bool hci_ssp_supported(hci_connection_t * connection){ 8250 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8251 return (connection->bonding_flags & mask) == mask; 8252 } 8253 8254 // query if remote side supports SSP 8255 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8256 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8257 if (!connection) return false; 8258 return hci_ssp_supported(connection) ? 1 : 0; 8259 } 8260 8261 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8262 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8263 } 8264 8265 /** 8266 * Check if remote supported features query has completed 8267 */ 8268 bool hci_remote_features_available(hci_con_handle_t handle){ 8269 hci_connection_t * connection = hci_connection_for_handle(handle); 8270 if (!connection) return false; 8271 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8272 } 8273 8274 /** 8275 * Trigger remote supported features query 8276 */ 8277 8278 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8279 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8280 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8281 } 8282 } 8283 8284 void hci_remote_features_query(hci_con_handle_t con_handle){ 8285 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8286 if (!connection) return; 8287 hci_trigger_remote_features_for_connection(connection); 8288 hci_run(); 8289 } 8290 8291 // GAP API 8292 /** 8293 * @bbrief enable/disable bonding. default is enabled 8294 * @praram enabled 8295 */ 8296 void gap_set_bondable_mode(int enable){ 8297 hci_stack->bondable = enable ? 1 : 0; 8298 } 8299 /** 8300 * @brief Get bondable mode. 8301 * @return 1 if bondable 8302 */ 8303 int gap_get_bondable_mode(void){ 8304 return hci_stack->bondable; 8305 } 8306 8307 /** 8308 * @brief map link keys to security levels 8309 */ 8310 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8311 switch (link_key_type){ 8312 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8313 return LEVEL_4; 8314 case COMBINATION_KEY: 8315 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8316 return LEVEL_3; 8317 default: 8318 return LEVEL_2; 8319 } 8320 } 8321 8322 /** 8323 * @brief map link keys to secure connection yes/no 8324 */ 8325 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8326 switch (link_key_type){ 8327 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8328 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8329 return true; 8330 default: 8331 return false; 8332 } 8333 } 8334 8335 /** 8336 * @brief map link keys to authenticated 8337 */ 8338 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8339 switch (link_key_type){ 8340 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8341 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8342 return true; 8343 default: 8344 return false; 8345 } 8346 } 8347 8348 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8349 log_info("gap_mitm_protection_required_for_security_level %u", level); 8350 return level > LEVEL_2; 8351 } 8352 8353 /** 8354 * @brief get current security level 8355 */ 8356 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8357 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8358 if (!connection) return LEVEL_0; 8359 return gap_security_level_for_connection(connection); 8360 } 8361 8362 /** 8363 * @brief request connection to device to 8364 * @result GAP_AUTHENTICATION_RESULT 8365 */ 8366 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8367 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8368 if (!connection){ 8369 hci_emit_security_level(con_handle, LEVEL_0); 8370 return; 8371 } 8372 8373 btstack_assert(hci_is_le_connection(connection) == false); 8374 8375 // 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) 8376 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8377 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8378 requested_level = LEVEL_4; 8379 } 8380 8381 gap_security_level_t current_level = gap_security_level(con_handle); 8382 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8383 requested_level, connection->requested_security_level, current_level); 8384 8385 // authentication active if authentication request was sent or planned level > 0 8386 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8387 if (authentication_active){ 8388 // authentication already active 8389 if (connection->requested_security_level < requested_level){ 8390 // increase requested level as new level is higher 8391 // TODO: handle re-authentication when done 8392 connection->requested_security_level = requested_level; 8393 } 8394 } else { 8395 // no request active, notify if security sufficient 8396 if (requested_level <= current_level){ 8397 hci_emit_security_level(con_handle, current_level); 8398 return; 8399 } 8400 8401 // store request 8402 connection->requested_security_level = requested_level; 8403 8404 // start to authenticate connection 8405 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8406 8407 // request remote features if not already active, also trigger hci_run 8408 hci_remote_features_query(con_handle); 8409 } 8410 } 8411 8412 /** 8413 * @brief start dedicated bonding with device. disconnect after bonding 8414 * @param device 8415 * @param request MITM protection 8416 * @result GAP_DEDICATED_BONDING_COMPLETE 8417 */ 8418 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8419 8420 // create connection state machine 8421 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8422 8423 if (!connection){ 8424 return BTSTACK_MEMORY_ALLOC_FAILED; 8425 } 8426 8427 // delete link key 8428 gap_drop_link_key_for_bd_addr(device); 8429 8430 // configure LEVEL_2/3, dedicated bonding 8431 connection->state = SEND_CREATE_CONNECTION; 8432 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8433 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8434 connection->bonding_flags = BONDING_DEDICATED; 8435 8436 hci_run(); 8437 8438 return 0; 8439 } 8440 8441 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8442 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8443 if (connection == NULL){ 8444 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8445 } 8446 if (defer){ 8447 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8448 } else { 8449 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8450 // trigger disconnect 8451 hci_run(); 8452 } 8453 return ERROR_CODE_SUCCESS; 8454 } 8455 8456 void gap_set_local_name(const char * local_name){ 8457 hci_stack->local_name = local_name; 8458 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8459 // also update EIR if not set by user 8460 if (hci_stack->eir_data == NULL){ 8461 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8462 } 8463 hci_run(); 8464 } 8465 #endif 8466 8467 8468 #ifdef ENABLE_BLE 8469 8470 #ifdef ENABLE_LE_CENTRAL 8471 void gap_start_scan(void){ 8472 hci_stack->le_scanning_enabled = true; 8473 hci_run(); 8474 } 8475 8476 void gap_stop_scan(void){ 8477 hci_stack->le_scanning_enabled = false; 8478 hci_run(); 8479 } 8480 8481 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8482 hci_stack->le_scan_type = scan_type; 8483 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8484 hci_stack->le_scan_interval = scan_interval; 8485 hci_stack->le_scan_window = scan_window; 8486 hci_stack->le_scanning_param_update = true; 8487 hci_run(); 8488 } 8489 8490 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8491 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8492 } 8493 8494 void gap_set_scan_duplicate_filter(bool enabled){ 8495 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8496 } 8497 8498 void gap_set_scan_phys(uint8_t phys){ 8499 // LE Coded and LE 1M PHY 8500 hci_stack->le_scan_phys = phys & 0x05; 8501 } 8502 8503 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8504 // disallow le connection if outgoing already active 8505 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8506 log_error("le connect already active"); 8507 return ERROR_CODE_COMMAND_DISALLOWED; 8508 } 8509 8510 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8511 if (conn == NULL) { 8512 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8513 if (conn == NULL){ 8514 // alloc failed 8515 log_info("gap_connect: failed to alloc hci_connection_t"); 8516 return BTSTACK_MEMORY_ALLOC_FAILED; 8517 } 8518 } else { 8519 switch (conn->state) { 8520 case RECEIVED_DISCONNECTION_COMPLETE: 8521 // connection was just disconnected, reset state and allow re-connect 8522 conn->role = HCI_ROLE_MASTER; 8523 break; 8524 default: 8525 return ERROR_CODE_COMMAND_DISALLOWED; 8526 } 8527 } 8528 8529 // set le connecting state 8530 if (hci_is_le_connection_type(addr_type)){ 8531 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8532 } 8533 8534 // trigger connect 8535 log_info("gap_connect: send create connection next"); 8536 conn->state = SEND_CREATE_CONNECTION; 8537 hci_run(); 8538 return ERROR_CODE_SUCCESS; 8539 } 8540 8541 // @assumption: only a single outgoing LE Connection exists 8542 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8543 btstack_linked_item_t *it; 8544 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8545 hci_connection_t * conn = (hci_connection_t *) it; 8546 if (hci_is_le_connection(conn)){ 8547 switch (conn->state){ 8548 case SEND_CREATE_CONNECTION: 8549 case SENT_CREATE_CONNECTION: 8550 return conn; 8551 default: 8552 break; 8553 }; 8554 } 8555 } 8556 return NULL; 8557 } 8558 8559 uint8_t gap_connect_cancel(void){ 8560 hci_connection_t * conn; 8561 switch (hci_stack->le_connecting_request){ 8562 case LE_CONNECTING_IDLE: 8563 break; 8564 case LE_CONNECTING_WHITELIST: 8565 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8566 hci_run(); 8567 break; 8568 case LE_CONNECTING_DIRECT: 8569 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8570 conn = gap_get_outgoing_le_connection(); 8571 if (conn == NULL){ 8572 hci_run(); 8573 } else { 8574 switch (conn->state){ 8575 case SEND_CREATE_CONNECTION: 8576 // skip sending create connection and emit event instead 8577 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8578 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8579 btstack_memory_hci_connection_free( conn ); 8580 break; 8581 case SENT_CREATE_CONNECTION: 8582 // let hci_run_general_gap_le cancel outgoing connection 8583 hci_run(); 8584 break; 8585 default: 8586 break; 8587 } 8588 } 8589 break; 8590 default: 8591 btstack_unreachable(); 8592 break; 8593 } 8594 return ERROR_CODE_SUCCESS; 8595 } 8596 8597 /** 8598 * @brief Set connection parameters for outgoing connections 8599 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8600 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8601 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8602 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8603 * @param conn_latency, default: 4 8604 * @param supervision_timeout (unit: 10ms), default: 720 ms 8605 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8606 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8607 */ 8608 8609 void gap_set_connection_phys(uint8_t phys){ 8610 // LE Coded, LE 1M, LE 2M PHY 8611 hci_stack->le_connection_phys = phys & 7; 8612 } 8613 8614 #endif 8615 8616 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8617 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8618 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8619 hci_stack->le_connection_scan_interval = conn_scan_interval; 8620 hci_stack->le_connection_scan_window = conn_scan_window; 8621 hci_stack->le_connection_interval_min = conn_interval_min; 8622 hci_stack->le_connection_interval_max = conn_interval_max; 8623 hci_stack->le_connection_latency = conn_latency; 8624 hci_stack->le_supervision_timeout = supervision_timeout; 8625 hci_stack->le_minimum_ce_length = min_ce_length; 8626 hci_stack->le_maximum_ce_length = max_ce_length; 8627 } 8628 8629 /** 8630 * @brief Updates the connection parameters for a given LE connection 8631 * @param handle 8632 * @param conn_interval_min (unit: 1.25ms) 8633 * @param conn_interval_max (unit: 1.25ms) 8634 * @param conn_latency 8635 * @param supervision_timeout (unit: 10ms) 8636 * @return 0 if ok 8637 */ 8638 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8639 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8640 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8641 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8642 connection->le_conn_interval_min = conn_interval_min; 8643 connection->le_conn_interval_max = conn_interval_max; 8644 connection->le_conn_latency = conn_latency; 8645 connection->le_supervision_timeout = supervision_timeout; 8646 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8647 hci_run(); 8648 return 0; 8649 } 8650 8651 /** 8652 * @brief Request an update of the connection parameter for a given LE connection 8653 * @param handle 8654 * @param conn_interval_min (unit: 1.25ms) 8655 * @param conn_interval_max (unit: 1.25ms) 8656 * @param conn_latency 8657 * @param supervision_timeout (unit: 10ms) 8658 * @return 0 if ok 8659 */ 8660 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8661 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8662 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8663 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8664 connection->le_conn_interval_min = conn_interval_min; 8665 connection->le_conn_interval_max = conn_interval_max; 8666 connection->le_conn_latency = conn_latency; 8667 connection->le_supervision_timeout = supervision_timeout; 8668 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8669 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8670 hci_emit_btstack_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8671 return 0; 8672 } 8673 8674 #ifdef ENABLE_LE_PERIPHERAL 8675 8676 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8677 static void hci_assert_advertisement_set_0_ready(void){ 8678 // force advertising set creation for legacy LE Advertising 8679 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8680 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8681 } 8682 } 8683 #endif 8684 8685 /** 8686 * @brief Set Advertisement Data 8687 * @param advertising_data_length 8688 * @param advertising_data (max 31 octets) 8689 * @note data is not copied, pointer has to stay valid 8690 */ 8691 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8692 hci_stack->le_advertisements_data_len = advertising_data_length; 8693 hci_stack->le_advertisements_data = advertising_data; 8694 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8695 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8696 hci_assert_advertisement_set_0_ready(); 8697 #endif 8698 hci_run(); 8699 } 8700 8701 /** 8702 * @brief Set Scan Response Data 8703 * @param advertising_data_length 8704 * @param advertising_data (max 31 octets) 8705 * @note data is not copied, pointer has to stay valid 8706 */ 8707 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8708 hci_stack->le_scan_response_data_len = scan_response_data_length; 8709 hci_stack->le_scan_response_data = scan_response_data; 8710 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8711 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8712 hci_assert_advertisement_set_0_ready(); 8713 #endif 8714 hci_run(); 8715 } 8716 8717 /** 8718 * @brief Set Advertisement Parameters 8719 * @param adv_int_min 8720 * @param adv_int_max 8721 * @param adv_type 8722 * @param direct_address_type 8723 * @param direct_address 8724 * @param channel_map 8725 * @param filter_policy 8726 * 8727 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8728 */ 8729 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8730 uint8_t direct_address_typ, bd_addr_t direct_address, 8731 uint8_t channel_map, uint8_t filter_policy) { 8732 8733 hci_stack->le_advertisements_interval_min = adv_int_min; 8734 hci_stack->le_advertisements_interval_max = adv_int_max; 8735 hci_stack->le_advertisements_type = adv_type; 8736 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8737 hci_stack->le_advertisements_channel_map = channel_map; 8738 hci_stack->le_advertisements_filter_policy = filter_policy; 8739 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8740 6); 8741 8742 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8743 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8744 hci_run(); 8745 } 8746 8747 /** 8748 * @brief Enable/Disable Advertisements 8749 * @param enabled 8750 */ 8751 void gap_advertisements_enable(int enabled){ 8752 if (enabled == 0){ 8753 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8754 } else { 8755 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8756 } 8757 hci_update_advertisements_enabled_for_current_roles(); 8758 hci_run(); 8759 } 8760 8761 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8762 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8763 btstack_linked_list_iterator_t it; 8764 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8765 while (btstack_linked_list_iterator_has_next(&it)){ 8766 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8767 if ( item->advertising_handle == advertising_handle ) { 8768 return item; 8769 } 8770 } 8771 return NULL; 8772 } 8773 8774 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8775 hci_stack->le_resolvable_private_address_update_s = update_s; 8776 hci_run(); 8777 return ERROR_CODE_SUCCESS; 8778 } 8779 8780 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8781 // find free advertisement handle 8782 uint8_t advertisement_handle; 8783 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8784 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8785 } 8786 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8787 // clear 8788 memset(storage, 0, sizeof(le_advertising_set_t)); 8789 // copy params 8790 storage->advertising_handle = advertisement_handle; 8791 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8792 // add to list 8793 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8794 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8795 *out_advertising_handle = advertisement_handle; 8796 // set tasks and start 8797 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8798 hci_run(); 8799 return ERROR_CODE_SUCCESS; 8800 } 8801 8802 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8803 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8804 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8805 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8806 // set tasks and start 8807 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8808 hci_run(); 8809 return ERROR_CODE_SUCCESS; 8810 } 8811 8812 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8813 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8814 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8815 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8816 return ERROR_CODE_SUCCESS; 8817 } 8818 8819 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8820 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8821 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8822 memcpy(advertising_set->random_address, random_address, 6); 8823 // set tasks and start 8824 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8825 hci_run(); 8826 return ERROR_CODE_SUCCESS; 8827 } 8828 8829 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8830 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8831 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8832 advertising_set->adv_data = advertising_data; 8833 advertising_set->adv_data_len = advertising_data_length; 8834 // set tasks and start 8835 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8836 hci_run(); 8837 return ERROR_CODE_SUCCESS; 8838 } 8839 8840 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){ 8841 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8842 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8843 advertising_set->scan_data = scan_response_data; 8844 advertising_set->scan_data_len = scan_response_data_length; 8845 // set tasks and start 8846 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8847 hci_run(); 8848 return ERROR_CODE_SUCCESS; 8849 } 8850 8851 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8852 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8853 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8854 advertising_set->enable_timeout = timeout; 8855 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8856 // set tasks and start 8857 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8858 hci_run(); 8859 return ERROR_CODE_SUCCESS; 8860 } 8861 8862 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8863 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8864 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8865 // set tasks and start 8866 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8867 hci_run(); 8868 return ERROR_CODE_SUCCESS; 8869 } 8870 8871 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8872 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8873 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8874 // set tasks and start 8875 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8876 hci_run(); 8877 return ERROR_CODE_SUCCESS; 8878 } 8879 8880 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8881 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8882 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8883 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8884 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8885 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8886 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8887 // set tasks and start 8888 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8889 hci_run(); 8890 return ERROR_CODE_SUCCESS; 8891 } 8892 8893 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8894 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8895 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8896 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8897 return ERROR_CODE_SUCCESS; 8898 } 8899 8900 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8901 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8902 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8903 advertising_set->periodic_data = periodic_data; 8904 advertising_set->periodic_data_len = periodic_data_length; 8905 // set tasks and start 8906 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8907 hci_run(); 8908 return ERROR_CODE_SUCCESS; 8909 } 8910 8911 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8912 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8913 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8914 // set tasks and start 8915 advertising_set->periodic_include_adi = include_adi; 8916 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8917 hci_run(); 8918 return ERROR_CODE_SUCCESS; 8919 } 8920 8921 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8922 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8923 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8924 // set tasks and start 8925 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8926 hci_run(); 8927 return ERROR_CODE_SUCCESS; 8928 } 8929 8930 #ifdef ENABLE_LE_CENTRAL 8931 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8932 hci_stack->le_past_mode = mode; 8933 hci_stack->le_past_skip = skip; 8934 hci_stack->le_past_sync_timeout = sync_timeout; 8935 hci_stack->le_past_cte_type = cte_type; 8936 hci_stack->le_past_set_default_params = true; 8937 hci_run(); 8938 return ERROR_CODE_SUCCESS; 8939 } 8940 8941 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8942 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8943 if (hci_connection == NULL){ 8944 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8945 } 8946 hci_connection->le_past_sync_handle = sync_handle; 8947 hci_connection->le_past_service_data = service_data; 8948 hci_run(); 8949 return ERROR_CODE_SUCCESS; 8950 } 8951 #endif 8952 8953 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8954 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8955 if (hci_connection == NULL){ 8956 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8957 } 8958 hci_connection->le_past_advertising_handle = advertising_handle; 8959 hci_connection->le_past_service_data = service_data; 8960 hci_run(); 8961 return ERROR_CODE_SUCCESS; 8962 } 8963 8964 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8965 8966 #endif 8967 8968 #endif 8969 8970 void hci_le_set_own_address_type(uint8_t own_address_type){ 8971 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8972 if (own_address_type == hci_stack->le_own_addr_type) return; 8973 hci_stack->le_own_addr_type = own_address_type; 8974 8975 #ifdef ENABLE_LE_PERIPHERAL 8976 // update advertisement parameters, too 8977 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8978 hci_run(); 8979 #endif 8980 #ifdef ENABLE_LE_CENTRAL 8981 // note: we don't update scan parameters or modify ongoing connection attempts 8982 #endif 8983 } 8984 8985 void hci_le_random_address_set(const bd_addr_t random_address){ 8986 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8987 memcpy(hci_stack->le_random_address, random_address, 6); 8988 hci_stack->le_random_address_set = true; 8989 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8990 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8991 if (hci_le_extended_advertising_supported()){ 8992 hci_assert_advertisement_set_0_ready(); 8993 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8994 } 8995 #endif 8996 hci_run(); 8997 } 8998 8999 #endif 9000 9001 uint8_t gap_disconnect(hci_con_handle_t handle){ 9002 hci_connection_t * conn = hci_connection_for_handle(handle); 9003 if (!conn){ 9004 hci_emit_disconnection_complete(handle, 0); 9005 return 0; 9006 } 9007 // ignore if already disconnected 9008 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 9009 return 0; 9010 } 9011 conn->state = SEND_DISCONNECT; 9012 hci_run(); 9013 return 0; 9014 } 9015 9016 int gap_read_rssi(hci_con_handle_t con_handle){ 9017 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9018 if (hci_connection == NULL) return 0; 9019 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 9020 hci_run(); 9021 return 1; 9022 } 9023 9024 /** 9025 * @brief Get connection type 9026 * @param con_handle 9027 * @result connection_type 9028 */ 9029 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 9030 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9031 if (!conn) return GAP_CONNECTION_INVALID; 9032 switch (conn->address_type){ 9033 case BD_ADDR_TYPE_LE_PUBLIC: 9034 case BD_ADDR_TYPE_LE_RANDOM: 9035 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9036 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9037 return GAP_CONNECTION_LE; 9038 case BD_ADDR_TYPE_SCO: 9039 return GAP_CONNECTION_SCO; 9040 case BD_ADDR_TYPE_ACL: 9041 return GAP_CONNECTION_ACL; 9042 default: 9043 return GAP_CONNECTION_INVALID; 9044 } 9045 } 9046 9047 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9048 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9049 if (!conn) return HCI_ROLE_INVALID; 9050 return (hci_role_t) conn->role; 9051 } 9052 9053 9054 #ifdef ENABLE_CLASSIC 9055 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9056 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9057 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9058 conn->request_role = role; 9059 hci_run(); 9060 return ERROR_CODE_SUCCESS; 9061 } 9062 #endif 9063 9064 #ifdef ENABLE_BLE 9065 9066 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){ 9067 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9068 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9069 9070 conn->le_phy_update_all_phys = all_phys; 9071 conn->le_phy_update_tx_phys = tx_phys; 9072 conn->le_phy_update_rx_phys = rx_phys; 9073 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9074 9075 hci_run(); 9076 9077 return 0; 9078 } 9079 9080 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9081 9082 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9083 // incorrect configuration: 9084 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9085 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9086 btstack_assert(false); 9087 #endif 9088 9089 // check if already in list 9090 btstack_linked_list_iterator_t it; 9091 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9092 while (btstack_linked_list_iterator_has_next(&it)) { 9093 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9094 if (entry->address_type != address_type) { 9095 continue; 9096 } 9097 if (memcmp(entry->address, address, 6) != 0) { 9098 continue; 9099 } 9100 9101 // if already on controller: 9102 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9103 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9104 // drop remove request 9105 entry->state = LE_WHITELIST_ON_CONTROLLER; 9106 return ERROR_CODE_SUCCESS; 9107 } else { 9108 // disallow as already on controller 9109 return ERROR_CODE_COMMAND_DISALLOWED; 9110 } 9111 } 9112 9113 // assume scheduled to add 9114 return ERROR_CODE_COMMAND_DISALLOWED; 9115 } 9116 9117 // alloc and add to list 9118 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9119 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9120 entry->address_type = address_type; 9121 (void)memcpy(entry->address, address, 6); 9122 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9123 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9124 return ERROR_CODE_SUCCESS; 9125 } 9126 9127 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9128 btstack_linked_list_iterator_t it; 9129 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9130 while (btstack_linked_list_iterator_has_next(&it)){ 9131 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9132 if (entry->address_type != address_type) { 9133 continue; 9134 } 9135 if (memcmp(entry->address, address, 6) != 0) { 9136 continue; 9137 } 9138 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9139 // remove from controller if already present 9140 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9141 } else { 9142 // directly remove entry from whitelist 9143 btstack_linked_list_iterator_remove(&it); 9144 btstack_memory_whitelist_entry_free(entry); 9145 } 9146 return ERROR_CODE_SUCCESS; 9147 } 9148 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9149 } 9150 9151 static void hci_whitelist_clear(void){ 9152 btstack_linked_list_iterator_t it; 9153 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9154 while (btstack_linked_list_iterator_has_next(&it)){ 9155 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9156 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9157 // remove from controller if already present 9158 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9159 continue; 9160 } 9161 // directly remove entry from whitelist 9162 btstack_linked_list_iterator_remove(&it); 9163 btstack_memory_whitelist_entry_free(entry); 9164 } 9165 } 9166 9167 /** 9168 * @brief Clear Whitelist 9169 * @return 0 if ok 9170 */ 9171 uint8_t gap_whitelist_clear(void){ 9172 hci_whitelist_clear(); 9173 hci_run(); 9174 return ERROR_CODE_SUCCESS; 9175 } 9176 9177 /** 9178 * @brief Add Device to Whitelist 9179 * @param address_typ 9180 * @param address 9181 * @return 0 if ok 9182 */ 9183 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9184 uint8_t status = hci_whitelist_add(address_type, address); 9185 if (status){ 9186 return status; 9187 } 9188 hci_run(); 9189 return ERROR_CODE_SUCCESS; 9190 } 9191 9192 /** 9193 * @brief Remove Device from Whitelist 9194 * @param address_typ 9195 * @param address 9196 * @return 0 if ok 9197 */ 9198 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9199 uint8_t status = hci_whitelist_remove(address_type, address); 9200 if (status){ 9201 return status; 9202 } 9203 hci_run(); 9204 return ERROR_CODE_SUCCESS; 9205 } 9206 9207 #ifdef ENABLE_LE_CENTRAL 9208 /** 9209 * @brief Connect with Whitelist 9210 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9211 * @return - if ok 9212 */ 9213 uint8_t gap_connect_with_whitelist(void){ 9214 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9215 return ERROR_CODE_COMMAND_DISALLOWED; 9216 } 9217 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9218 hci_run(); 9219 return ERROR_CODE_SUCCESS; 9220 } 9221 9222 /** 9223 * @brief Auto Connection Establishment - Start Connecting to device 9224 * @param address_typ 9225 * @param address 9226 * @return 0 if ok 9227 */ 9228 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9229 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9230 return ERROR_CODE_COMMAND_DISALLOWED; 9231 } 9232 9233 uint8_t status = hci_whitelist_add(address_type, address); 9234 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9235 return status; 9236 } 9237 9238 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9239 9240 hci_run(); 9241 return ERROR_CODE_SUCCESS; 9242 } 9243 9244 /** 9245 * @brief Auto Connection Establishment - Stop Connecting to device 9246 * @param address_typ 9247 * @param address 9248 * @return 0 if ok 9249 */ 9250 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9251 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9252 return ERROR_CODE_COMMAND_DISALLOWED; 9253 } 9254 9255 hci_whitelist_remove(address_type, address); 9256 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9257 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9258 } 9259 hci_run(); 9260 return 0; 9261 } 9262 9263 /** 9264 * @brief Auto Connection Establishment - Stop everything 9265 * @note Convenience function to stop all active auto connection attempts 9266 */ 9267 uint8_t gap_auto_connection_stop_all(void){ 9268 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9269 return ERROR_CODE_COMMAND_DISALLOWED; 9270 } 9271 hci_whitelist_clear(); 9272 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9273 hci_run(); 9274 return ERROR_CODE_SUCCESS; 9275 } 9276 9277 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9278 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9279 if (!conn) return 0; 9280 return conn->le_connection_interval; 9281 } 9282 #endif 9283 #endif 9284 9285 #ifdef ENABLE_CLASSIC 9286 /** 9287 * @brief Set Extended Inquiry Response data 9288 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9289 * @note has to be done before stack starts up 9290 */ 9291 void gap_set_extended_inquiry_response(const uint8_t * data){ 9292 hci_stack->eir_data = data; 9293 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9294 hci_run(); 9295 } 9296 9297 /** 9298 * @brief Start GAP Classic Inquiry 9299 * @param duration in 1.28s units 9300 * @return 0 if ok 9301 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9302 */ 9303 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9304 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9305 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9306 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9307 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9308 } 9309 hci_stack->inquiry_state = duration_in_1280ms_units; 9310 hci_stack->inquiry_max_period_length = 0; 9311 hci_stack->inquiry_min_period_length = 0; 9312 hci_run(); 9313 return 0; 9314 } 9315 9316 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9317 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9318 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9319 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9320 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9321 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9322 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9323 9324 hci_stack->inquiry_state = duration; 9325 hci_stack->inquiry_max_period_length = max_period_length; 9326 hci_stack->inquiry_min_period_length = min_period_length; 9327 hci_run(); 9328 return 0; 9329 } 9330 9331 /** 9332 * @brief Stop GAP Classic Inquiry 9333 * @return 0 if ok 9334 */ 9335 int gap_inquiry_stop(void){ 9336 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9337 // emit inquiry complete event, before it even started 9338 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9339 hci_emit_btstack_event(event, sizeof(event), 1); 9340 return 0; 9341 } 9342 switch (hci_stack->inquiry_state){ 9343 case GAP_INQUIRY_STATE_ACTIVE: 9344 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9345 hci_run(); 9346 return ERROR_CODE_SUCCESS; 9347 case GAP_INQUIRY_STATE_PERIODIC: 9348 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9349 hci_run(); 9350 return ERROR_CODE_SUCCESS; 9351 default: 9352 return ERROR_CODE_COMMAND_DISALLOWED; 9353 } 9354 } 9355 9356 void gap_inquiry_set_lap(uint32_t lap){ 9357 hci_stack->inquiry_lap = lap; 9358 } 9359 9360 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9361 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9362 hci_stack->inquiry_scan_window = inquiry_scan_window; 9363 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9364 hci_run(); 9365 } 9366 9367 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9368 { 9369 hci_stack->inquiry_tx_power_level = tx_power; 9370 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9371 hci_run(); 9372 } 9373 9374 9375 /** 9376 * @brief Remote Name Request 9377 * @param addr 9378 * @param page_scan_repetition_mode 9379 * @param clock_offset only used when bit 15 is set 9380 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9381 */ 9382 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9383 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9384 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9385 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9386 hci_stack->remote_name_clock_offset = clock_offset; 9387 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9388 hci_run(); 9389 return 0; 9390 } 9391 9392 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9393 hci_stack->gap_pairing_state = state; 9394 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9395 hci_run(); 9396 return 0; 9397 } 9398 9399 /** 9400 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9401 * @param addr 9402 * @param pin_data 9403 * @param pin_len 9404 * @return 0 if ok 9405 */ 9406 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9407 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9408 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9409 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9410 hci_stack->gap_pairing_pin_len = pin_len; 9411 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9412 } 9413 9414 /** 9415 * @brief Legacy Pairing Pin Code Response 9416 * @param addr 9417 * @param pin 9418 * @return 0 if ok 9419 */ 9420 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9421 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9422 } 9423 9424 /** 9425 * @brief Abort Legacy Pairing 9426 * @param addr 9427 * @param pin 9428 * @return 0 if ok 9429 */ 9430 int gap_pin_code_negative(bd_addr_t addr){ 9431 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9432 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9433 } 9434 9435 /** 9436 * @brief SSP Passkey Response 9437 * @param addr 9438 * @param passkey 9439 * @return 0 if ok 9440 */ 9441 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9442 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9443 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9444 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9445 } 9446 9447 /** 9448 * @brief Abort SSP Passkey Entry/Pairing 9449 * @param addr 9450 * @param pin 9451 * @return 0 if ok 9452 */ 9453 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9454 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9455 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9456 } 9457 9458 /** 9459 * @brief Accept SSP Numeric Comparison 9460 * @param addr 9461 * @param passkey 9462 * @return 0 if ok 9463 */ 9464 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9465 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9466 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9467 } 9468 9469 /** 9470 * @brief Abort SSP Numeric Comparison/Pairing 9471 * @param addr 9472 * @param pin 9473 * @return 0 if ok 9474 */ 9475 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9476 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9477 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9478 } 9479 9480 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9481 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9482 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9483 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9484 connectionSetAuthenticationFlags(conn, flag); 9485 hci_run(); 9486 return ERROR_CODE_SUCCESS; 9487 } 9488 #endif 9489 9490 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9491 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9492 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9493 } 9494 9495 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9496 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9497 } 9498 #endif 9499 9500 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9501 /** 9502 * @brief Report Remote OOB Data 9503 * @param bd_addr 9504 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9505 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9506 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9507 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9508 */ 9509 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){ 9510 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9511 if (connection == NULL) { 9512 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9513 } 9514 connection->classic_oob_c_192 = c_192; 9515 connection->classic_oob_r_192 = r_192; 9516 9517 // ignore P-256 if not supported by us 9518 if (hci_stack->secure_connections_active){ 9519 connection->classic_oob_c_256 = c_256; 9520 connection->classic_oob_r_256 = r_256; 9521 } 9522 9523 return ERROR_CODE_SUCCESS; 9524 } 9525 /** 9526 * @brief Generate new OOB data 9527 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9528 */ 9529 void gap_ssp_generate_oob_data(void){ 9530 hci_stack->classic_read_local_oob_data = true; 9531 hci_run(); 9532 } 9533 9534 #endif 9535 9536 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9537 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9538 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9539 if (connection == NULL) { 9540 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9541 } 9542 9543 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9544 connection->link_key_type = type; 9545 9546 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9547 } 9548 9549 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9550 /** 9551 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9552 * @param inquiry_mode see bluetooth_defines.h 9553 */ 9554 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9555 hci_stack->inquiry_mode = inquiry_mode; 9556 } 9557 9558 /** 9559 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9560 */ 9561 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9562 hci_stack->sco_voice_setting = voice_setting; 9563 } 9564 9565 /** 9566 * @brief Get SCO Voice Setting 9567 * @return current voice setting 9568 */ 9569 uint16_t hci_get_sco_voice_setting(void){ 9570 return hci_stack->sco_voice_setting; 9571 } 9572 9573 static int hci_have_usb_transport(void){ 9574 if (!hci_stack->hci_transport) return 0; 9575 const char * transport_name = hci_stack->hci_transport->name; 9576 if (!transport_name) return 0; 9577 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9578 } 9579 9580 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9581 uint16_t sco_packet_length = 0; 9582 9583 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9584 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9585 int multiplier; 9586 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9587 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9588 multiplier = 2; 9589 } else { 9590 multiplier = 1; 9591 } 9592 #endif 9593 9594 #ifdef ENABLE_SCO_OVER_HCI 9595 if (hci_have_usb_transport()){ 9596 // see Core Spec for H2 USB Transfer. 9597 // 3 byte SCO header + 24 bytes per connection 9598 // @note multiple sco connections not supported currently 9599 sco_packet_length = 3 + 24 * multiplier; 9600 } else { 9601 // 3 byte SCO header + SCO packet length over the air 9602 sco_packet_length = 3 + payload_size * multiplier; 9603 // assert that it still fits inside an SCO buffer 9604 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9605 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9606 } 9607 } 9608 #endif 9609 #ifdef HAVE_SCO_TRANSPORT 9610 // 3 byte SCO header + SCO packet length over the air 9611 sco_packet_length = 3 + payload_size * multiplier; 9612 // assert that it still fits inside an SCO buffer 9613 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9614 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9615 } 9616 #endif 9617 return sco_packet_length; 9618 } 9619 9620 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9621 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9622 if (connection != NULL){ 9623 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9624 } 9625 return 0; 9626 } 9627 9628 uint16_t hci_get_sco_packet_length(void){ 9629 btstack_linked_list_iterator_t it; 9630 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9631 while (btstack_linked_list_iterator_has_next(&it)){ 9632 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9633 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9634 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9635 } 9636 } 9637 return 0; 9638 } 9639 9640 /** 9641 * @brief Sets the master/slave policy 9642 * @param policy (0: attempt to become master, 1: let connecting device decide) 9643 */ 9644 void hci_set_master_slave_policy(uint8_t policy){ 9645 hci_stack->master_slave_policy = policy; 9646 } 9647 9648 #endif 9649 9650 HCI_STATE hci_get_state(void){ 9651 return hci_stack->state; 9652 } 9653 9654 #ifdef ENABLE_CLASSIC 9655 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9656 hci_stack->gap_classic_accept_callback = accept_callback; 9657 } 9658 #endif 9659 9660 /** 9661 * @brief Set callback for Bluetooth Hardware Error 9662 */ 9663 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9664 hci_stack->hardware_error_callback = fn; 9665 } 9666 9667 void hci_disconnect_all(void){ 9668 btstack_linked_list_iterator_t it; 9669 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9670 while (btstack_linked_list_iterator_has_next(&it)){ 9671 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9672 if (con->state == SENT_DISCONNECT) continue; 9673 con->state = SEND_DISCONNECT; 9674 } 9675 hci_run(); 9676 } 9677 9678 uint16_t hci_get_manufacturer(void){ 9679 return hci_stack->manufacturer; 9680 } 9681 9682 #ifdef ENABLE_BLE 9683 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9684 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9685 if (!hci_con) return NULL; 9686 return &hci_con->sm_connection; 9687 } 9688 9689 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9690 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9691 #endif 9692 9693 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9694 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9695 if (hci_connection == NULL) return 0; 9696 if (hci_is_le_connection(hci_connection)){ 9697 #ifdef ENABLE_BLE 9698 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9699 if (sm_conn->sm_connection_encrypted != 0u) { 9700 return sm_conn->sm_actual_encryption_key_size; 9701 } 9702 #endif 9703 } else { 9704 #ifdef ENABLE_CLASSIC 9705 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9706 return hci_connection->encryption_key_size; 9707 } 9708 #endif 9709 } 9710 return 0; 9711 } 9712 9713 bool gap_authenticated(hci_con_handle_t con_handle){ 9714 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9715 if (hci_connection == NULL) return false; 9716 9717 switch (hci_connection->address_type){ 9718 #ifdef ENABLE_BLE 9719 case BD_ADDR_TYPE_LE_PUBLIC: 9720 case BD_ADDR_TYPE_LE_RANDOM: 9721 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9722 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9723 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9724 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9725 #endif 9726 #ifdef ENABLE_CLASSIC 9727 case BD_ADDR_TYPE_SCO: 9728 case BD_ADDR_TYPE_ACL: 9729 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9730 #endif 9731 default: 9732 return false; 9733 } 9734 } 9735 9736 bool gap_secure_connection(hci_con_handle_t con_handle){ 9737 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9738 if (hci_connection == NULL) return 0; 9739 9740 switch (hci_connection->address_type){ 9741 #ifdef ENABLE_BLE 9742 case BD_ADDR_TYPE_LE_PUBLIC: 9743 case BD_ADDR_TYPE_LE_RANDOM: 9744 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9745 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9746 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9747 return hci_connection->sm_connection.sm_connection_sc; 9748 #endif 9749 #ifdef ENABLE_CLASSIC 9750 case BD_ADDR_TYPE_SCO: 9751 case BD_ADDR_TYPE_ACL: 9752 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9753 #endif 9754 default: 9755 return false; 9756 } 9757 } 9758 9759 bool gap_bonded(hci_con_handle_t con_handle){ 9760 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9761 if (hci_connection == NULL) return 0; 9762 9763 #ifdef ENABLE_CLASSIC 9764 link_key_t link_key; 9765 link_key_type_t link_key_type; 9766 #endif 9767 switch (hci_connection->address_type){ 9768 #ifdef ENABLE_BLE 9769 case BD_ADDR_TYPE_LE_PUBLIC: 9770 case BD_ADDR_TYPE_LE_RANDOM: 9771 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9772 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9773 return hci_connection->sm_connection.sm_le_db_index >= 0; 9774 #endif 9775 #ifdef ENABLE_CLASSIC 9776 case BD_ADDR_TYPE_SCO: 9777 case BD_ADDR_TYPE_ACL: 9778 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9779 #endif 9780 default: 9781 return false; 9782 } 9783 } 9784 9785 #ifdef ENABLE_BLE 9786 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9787 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9788 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9789 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9790 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9791 return sm_conn->sm_connection_authorization_state; 9792 } 9793 #endif 9794 9795 #ifdef ENABLE_CLASSIC 9796 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){ 9797 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9798 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9799 conn->sniff_min_interval = sniff_min_interval; 9800 conn->sniff_max_interval = sniff_max_interval; 9801 conn->sniff_attempt = sniff_attempt; 9802 conn->sniff_timeout = sniff_timeout; 9803 hci_run(); 9804 return 0; 9805 } 9806 9807 /** 9808 * @brief Exit Sniff mode 9809 * @param con_handle 9810 @ @return 0 if ok 9811 */ 9812 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9813 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9814 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9815 conn->sniff_min_interval = 0xffff; 9816 hci_run(); 9817 return 0; 9818 } 9819 9820 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){ 9821 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9822 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9823 conn->sniff_subrating_max_latency = max_latency; 9824 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9825 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9826 hci_run(); 9827 return ERROR_CODE_SUCCESS; 9828 } 9829 9830 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){ 9831 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9832 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9833 conn->qos_service_type = service_type; 9834 conn->qos_token_rate = token_rate; 9835 conn->qos_peak_bandwidth = peak_bandwidth; 9836 conn->qos_latency = latency; 9837 conn->qos_delay_variation = delay_variation; 9838 hci_run(); 9839 return ERROR_CODE_SUCCESS; 9840 } 9841 9842 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9843 hci_stack->new_page_scan_interval = page_scan_interval; 9844 hci_stack->new_page_scan_window = page_scan_window; 9845 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9846 hci_run(); 9847 } 9848 9849 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9850 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9851 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9852 hci_run(); 9853 } 9854 9855 void gap_set_page_timeout(uint16_t page_timeout){ 9856 hci_stack->page_timeout = page_timeout; 9857 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9858 hci_run(); 9859 } 9860 9861 #endif 9862 9863 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9864 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9865 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9866 if (le_device_db_index >= le_device_db_max_count()) return; 9867 uint8_t offset = le_device_db_index >> 3; 9868 uint8_t mask = 1 << (le_device_db_index & 7); 9869 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9870 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9871 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9872 // note: go back to remove entries, otherwise, a remove + add will skip the add 9873 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9874 } 9875 } 9876 9877 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9878 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9879 if (le_device_db_index >= le_device_db_max_count()) return; 9880 uint8_t offset = le_device_db_index >> 3; 9881 uint8_t mask = 1 << (le_device_db_index & 7); 9882 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9883 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9884 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9885 } 9886 } 9887 9888 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9889 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9890 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9891 } 9892 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9893 // restart le resolving list update 9894 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9895 } 9896 return ERROR_CODE_SUCCESS; 9897 } 9898 9899 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9900 hci_stack->le_privacy_mode = privacy_mode; 9901 } 9902 #endif 9903 9904 #ifdef ENABLE_BLE 9905 #ifdef ENABLE_LE_CENTRAL 9906 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9907 9908 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9909 9910 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9911 // incorrect configuration: 9912 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9913 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9914 btstack_assert(false); 9915 #endif 9916 9917 // check if already in list 9918 btstack_linked_list_iterator_t it; 9919 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9920 while (btstack_linked_list_iterator_has_next(&it)) { 9921 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9922 if (entry->sid != advertising_sid) { 9923 continue; 9924 } 9925 if (entry->address_type != address_type) { 9926 continue; 9927 } 9928 if (memcmp(entry->address, address, 6) != 0) { 9929 continue; 9930 } 9931 // disallow if already scheduled to add 9932 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9933 return ERROR_CODE_COMMAND_DISALLOWED; 9934 } 9935 // still on controller, but scheduled to remove -> re-add 9936 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9937 return ERROR_CODE_SUCCESS; 9938 } 9939 // alloc and add to list 9940 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9941 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9942 entry->sid = advertising_sid; 9943 entry->address_type = address_type; 9944 (void)memcpy(entry->address, address, 6); 9945 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9946 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9947 return ERROR_CODE_SUCCESS; 9948 } 9949 9950 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9951 btstack_linked_list_iterator_t it; 9952 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9953 while (btstack_linked_list_iterator_has_next(&it)){ 9954 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9955 if (entry->sid != advertising_sid) { 9956 continue; 9957 } 9958 if (entry->address_type != address_type) { 9959 continue; 9960 } 9961 if (memcmp(entry->address, address, 6) != 0) { 9962 continue; 9963 } 9964 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9965 // remove from controller if already present 9966 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9967 } else { 9968 // directly remove entry from whitelist 9969 btstack_linked_list_iterator_remove(&it); 9970 btstack_memory_periodic_advertiser_list_entry_free(entry); 9971 } 9972 return ERROR_CODE_SUCCESS; 9973 } 9974 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9975 } 9976 9977 static void hci_periodic_advertiser_list_clear(void){ 9978 btstack_linked_list_iterator_t it; 9979 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9980 while (btstack_linked_list_iterator_has_next(&it)){ 9981 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9982 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9983 // remove from controller if already present 9984 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9985 continue; 9986 } 9987 // directly remove entry from whitelist 9988 btstack_linked_list_iterator_remove(&it); 9989 btstack_memory_periodic_advertiser_list_entry_free(entry); 9990 } 9991 } 9992 9993 uint8_t gap_periodic_advertiser_list_clear(void){ 9994 hci_periodic_advertiser_list_clear(); 9995 hci_run(); 9996 return ERROR_CODE_SUCCESS; 9997 } 9998 9999 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10000 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 10001 if (status){ 10002 return status; 10003 } 10004 hci_run(); 10005 return ERROR_CODE_SUCCESS; 10006 } 10007 10008 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10009 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 10010 if (status){ 10011 return status; 10012 } 10013 hci_run(); 10014 return ERROR_CODE_SUCCESS; 10015 } 10016 10017 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 10018 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 10019 // abort if already active 10020 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 10021 return ERROR_CODE_COMMAND_DISALLOWED; 10022 } 10023 // store request 10024 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 10025 hci_stack->le_periodic_sync_options = options; 10026 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 10027 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 10028 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 10029 hci_stack->le_periodic_sync_skip = skip; 10030 hci_stack->le_periodic_sync_timeout = sync_timeout; 10031 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 10032 10033 hci_run(); 10034 return ERROR_CODE_SUCCESS; 10035 } 10036 10037 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 10038 // abort if not requested 10039 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 10040 return ERROR_CODE_COMMAND_DISALLOWED; 10041 } 10042 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 10043 hci_run(); 10044 return ERROR_CODE_SUCCESS; 10045 } 10046 10047 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10048 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10049 return ERROR_CODE_COMMAND_DISALLOWED; 10050 } 10051 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10052 hci_run(); 10053 return ERROR_CODE_SUCCESS; 10054 } 10055 10056 #endif 10057 #endif 10058 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10059 static hci_iso_stream_t * 10060 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10061 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10062 if (iso_stream != NULL){ 10063 iso_stream->iso_type = iso_type; 10064 iso_stream->state = state; 10065 iso_stream->group_id = group_id; 10066 iso_stream->stream_id = stream_id; 10067 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10068 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10069 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10070 } 10071 return iso_stream; 10072 } 10073 10074 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10075 btstack_linked_list_iterator_t it; 10076 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10077 while (btstack_linked_list_iterator_has_next(&it)){ 10078 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10079 if (iso_stream->cis_handle == con_handle ) { 10080 return iso_stream; 10081 } 10082 } 10083 return NULL; 10084 } 10085 10086 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10087 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10088 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10089 btstack_memory_hci_iso_stream_free(iso_stream); 10090 } 10091 10092 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10093 btstack_linked_list_iterator_t it; 10094 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10095 while (btstack_linked_list_iterator_has_next(&it)){ 10096 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10097 if ((iso_stream->group_id == group_id) && 10098 (iso_stream->iso_type == iso_type)){ 10099 btstack_linked_list_iterator_remove(&it); 10100 btstack_memory_hci_iso_stream_free(iso_stream); 10101 } 10102 } 10103 } 10104 10105 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10106 btstack_linked_list_iterator_t it; 10107 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10108 while (btstack_linked_list_iterator_has_next(&it)){ 10109 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10110 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10111 (iso_stream->group_id == group_id)){ 10112 btstack_linked_list_iterator_remove(&it); 10113 btstack_memory_hci_iso_stream_free(iso_stream); 10114 } 10115 } 10116 } 10117 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10118 btstack_linked_list_iterator_t it; 10119 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10120 while (btstack_linked_list_iterator_has_next(&it)){ 10121 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10122 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10123 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10124 } 10125 } 10126 } 10127 10128 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10129 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10130 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10131 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10132 return (sdu_len_offset + 2 + sdu_len) == size; 10133 } 10134 10135 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10136 if (iso_stream == NULL){ 10137 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10138 return; 10139 } 10140 10141 if (hci_stack->iso_packet_handler == NULL) { 10142 return; 10143 } 10144 10145 // parse header 10146 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10147 uint16_t data_total_length = little_endian_read_16(packet, 2); 10148 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10149 10150 // assert packet is complete 10151 if ((data_total_length + 4u) != size){ 10152 return; 10153 } 10154 10155 if ((pb_flag & 0x01) == 0){ 10156 if (pb_flag == 0x02){ 10157 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10158 if (hci_iso_sdu_complete(packet, size)) { 10159 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10160 } 10161 } else { 10162 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10163 if (size > sizeof(iso_stream->reassembly_buffer)){ 10164 return; 10165 } 10166 memcpy(iso_stream->reassembly_buffer, packet, size); 10167 // fix pb_flag 10168 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10169 iso_stream->reassembly_pos = size; 10170 } 10171 } else { 10172 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10173 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10174 if (ts_flag != 0){ 10175 return; 10176 } 10177 // append fragment 10178 if (iso_stream->reassembly_pos == 0){ 10179 return; 10180 } 10181 10182 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10183 // reset reassembly buffer 10184 iso_stream->reassembly_pos = 0; 10185 return; 10186 } 10187 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10188 iso_stream->reassembly_pos += data_total_length; 10189 10190 // deliver if last fragment and SDU complete 10191 if (pb_flag == 0x03){ 10192 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10193 // fix data_total_length 10194 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10195 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10196 } 10197 // reset reassembly buffer 10198 iso_stream->reassembly_pos = 0; 10199 } 10200 } 10201 } 10202 10203 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10204 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10205 uint16_t pos = 0; 10206 event[pos++] = HCI_EVENT_META_GAP; 10207 event[pos++] = 4 + (2 * big->num_bis); 10208 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10209 event[pos++] = status; 10210 event[pos++] = big->big_handle; 10211 event[pos++] = big->num_bis; 10212 uint8_t i; 10213 for (i=0;i<big->num_bis;i++){ 10214 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10215 pos += 2; 10216 } 10217 hci_emit_btstack_event(event, pos, 0); 10218 } 10219 10220 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10221 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10222 uint16_t pos = 0; 10223 event[pos++] = HCI_EVENT_META_GAP; 10224 event[pos++] = 4 + (2 * cig->num_cis); 10225 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10226 event[pos++] = status; 10227 event[pos++] = cig->cig_id; 10228 event[pos++] = cig->num_cis; 10229 uint8_t i; 10230 for (i=0;i<cig->num_cis;i++){ 10231 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10232 pos += 2; 10233 } 10234 hci_emit_btstack_event(event, pos, 0); 10235 } 10236 10237 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10238 uint16_t pos = 0; 10239 event[pos++] = HCI_EVENT_META_GAP; 10240 event[pos++] = 8; 10241 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10242 event[pos++] = status; 10243 event[pos++] = iso_stream->group_id; 10244 event[pos++] = iso_stream->stream_id; 10245 little_endian_store_16(event, pos, iso_stream->cis_handle); 10246 pos += 2; 10247 little_endian_store_16(event, pos, iso_stream->acl_handle); 10248 pos += 2; 10249 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10250 pos += 2; 10251 event[pos++] = iso_stream->number_of_subevents; 10252 event[pos++] = iso_stream->burst_number_c_to_p; 10253 event[pos++] = iso_stream->burst_number_p_to_c; 10254 event[pos++] = iso_stream->flush_timeout_c_to_p; 10255 event[pos++] = iso_stream->flush_timeout_p_to_c; 10256 return pos; 10257 } 10258 10259 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10260 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10261 // cache data before finalizing struct 10262 uint8_t event [17]; 10263 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10264 btstack_assert(pos <= sizeof(event)); 10265 if (status != ERROR_CODE_SUCCESS){ 10266 hci_iso_stream_finalize(iso_stream); 10267 } 10268 hci_emit_btstack_event(event, pos, 0); 10269 } 10270 10271 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10272 uint8_t event [4]; 10273 uint16_t pos = 0; 10274 event[pos++] = HCI_EVENT_META_GAP; 10275 event[pos++] = 2; 10276 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10277 event[pos++] = big->big_handle; 10278 hci_emit_btstack_event(event, pos, 0); 10279 } 10280 10281 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10282 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10283 uint16_t pos = 0; 10284 event[pos++] = HCI_EVENT_META_GAP; 10285 event[pos++] = 4; 10286 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10287 event[pos++] = status; 10288 event[pos++] = big_sync->big_handle; 10289 event[pos++] = big_sync->num_bis; 10290 uint8_t i; 10291 for (i=0;i<big_sync->num_bis;i++){ 10292 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10293 pos += 2; 10294 } 10295 hci_emit_btstack_event(event, pos, 0); 10296 } 10297 10298 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10299 uint8_t event [4]; 10300 uint16_t pos = 0; 10301 event[pos++] = HCI_EVENT_META_GAP; 10302 event[pos++] = 2; 10303 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10304 event[pos++] = big_handle; 10305 hci_emit_btstack_event(event, pos, 0); 10306 } 10307 10308 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10309 uint8_t event[6]; 10310 uint16_t pos = 0; 10311 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10312 event[pos++] = sizeof(event) - 2; 10313 event[pos++] = big->big_handle; 10314 event[pos++] = bis_index; 10315 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10316 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10317 } 10318 10319 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10320 uint8_t event[4]; 10321 uint16_t pos = 0; 10322 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10323 event[pos++] = sizeof(event) - 2; 10324 little_endian_store_16(event, pos, cis_con_handle); 10325 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10326 } 10327 10328 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10329 btstack_linked_list_iterator_t it; 10330 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10331 while (btstack_linked_list_iterator_has_next(&it)){ 10332 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10333 if ( big->big_handle == big_handle ) { 10334 return big; 10335 } 10336 } 10337 return NULL; 10338 } 10339 10340 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10341 btstack_linked_list_iterator_t it; 10342 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10343 while (btstack_linked_list_iterator_has_next(&it)){ 10344 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10345 if ( big_sync->big_handle == big_handle ) { 10346 return big_sync; 10347 } 10348 } 10349 return NULL; 10350 } 10351 10352 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10353 hci_stack->iso_packets_to_queue = num_packets; 10354 } 10355 10356 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10357 btstack_linked_list_iterator_t it; 10358 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10359 while (btstack_linked_list_iterator_has_next(&it)){ 10360 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10361 if ( cig->cig_id == cig_id ) { 10362 return cig; 10363 } 10364 } 10365 return NULL; 10366 } 10367 10368 static void hci_iso_notify_can_send_now(void){ 10369 10370 // BIG 10371 10372 btstack_linked_list_iterator_t it; 10373 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10374 while (btstack_linked_list_iterator_has_next(&it)){ 10375 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10376 // track number completed packet timestamps 10377 if (big->num_completed_timestamp_current_valid){ 10378 big->num_completed_timestamp_current_valid = false; 10379 if (big->num_completed_timestamp_previous_valid){ 10380 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10381 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10382 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10383 big->num_completed_timestamp_previous_ms); 10384 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10385 // to catch up, skip packet on all BIS 10386 uint8_t i; 10387 for (i=0;i<big->num_bis;i++){ 10388 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10389 if (iso_stream){ 10390 iso_stream->num_packets_to_skip++; 10391 } 10392 } 10393 } 10394 } 10395 big->num_completed_timestamp_previous_valid = true; 10396 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10397 } 10398 10399 if (big->can_send_now_requested){ 10400 // check if no outgoing iso packets pending and no can send now have to be emitted 10401 uint8_t i; 10402 bool can_send = true; 10403 uint8_t num_iso_queued_minimum = 0; 10404 for (i=0;i<big->num_bis;i++){ 10405 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10406 if (iso_stream == NULL) continue; 10407 // handle case where individual ISO packet was sent too late: 10408 // for each additionally queued packet, a new one needs to get skipped 10409 if (i==0){ 10410 num_iso_queued_minimum = iso_stream->num_packets_sent; 10411 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10412 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10413 iso_stream->num_packets_to_skip += num_packets_to_skip; 10414 iso_stream->num_packets_sent -= num_packets_to_skip; 10415 } 10416 // check if we can send now 10417 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10418 can_send = false; 10419 break; 10420 } 10421 } 10422 if (can_send){ 10423 // propagate can send now to individual streams 10424 big->can_send_now_requested = false; 10425 for (i=0;i<big->num_bis;i++){ 10426 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10427 iso_stream->emit_ready_to_send = true; 10428 } 10429 } 10430 } 10431 } 10432 10433 if (hci_stack->hci_packet_buffer_reserved) return; 10434 10435 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10436 while (btstack_linked_list_iterator_has_next(&it)){ 10437 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10438 // report bis ready 10439 uint8_t i; 10440 for (i=0;i<big->num_bis;i++){ 10441 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10442 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10443 iso_stream->emit_ready_to_send = false; 10444 hci_emit_bis_can_send_now(big, i); 10445 if (hci_stack->hci_packet_buffer_reserved) return; 10446 } 10447 } 10448 } 10449 10450 10451 // CIS 10452 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10453 while (btstack_linked_list_iterator_has_next(&it)) { 10454 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10455 if ((iso_stream->can_send_now_requested) && 10456 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10457 iso_stream->can_send_now_requested = false; 10458 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10459 if (hci_stack->hci_packet_buffer_reserved) return; 10460 } 10461 } 10462 } 10463 10464 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10465 // make big handle unique and usuable for big and big sync 10466 if (hci_big_for_handle(big_handle) != NULL){ 10467 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10468 } 10469 if (hci_big_sync_for_handle(big_handle) != NULL){ 10470 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10471 } 10472 if (num_bis == 0){ 10473 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10474 } 10475 if (num_bis > MAX_NR_BIS){ 10476 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10477 } 10478 10479 // reserve ISO Streams 10480 uint8_t i; 10481 uint8_t status = ERROR_CODE_SUCCESS; 10482 for (i=0;i<num_bis;i++){ 10483 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10484 if (iso_stream == NULL) { 10485 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10486 break; 10487 } 10488 } 10489 10490 // free structs on error 10491 if (status != ERROR_CODE_SUCCESS){ 10492 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10493 } 10494 10495 return status; 10496 } 10497 10498 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10499 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10500 if (status != ERROR_CODE_SUCCESS){ 10501 return status; 10502 } 10503 10504 le_audio_big_t * big = storage; 10505 big->big_handle = big_params->big_handle; 10506 big->params = big_params; 10507 big->state = LE_AUDIO_BIG_STATE_CREATE; 10508 big->num_bis = big_params->num_bis; 10509 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10510 10511 hci_run(); 10512 10513 return ERROR_CODE_SUCCESS; 10514 } 10515 10516 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10517 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10518 if (status != ERROR_CODE_SUCCESS){ 10519 return status; 10520 } 10521 10522 le_audio_big_sync_t * big_sync = storage; 10523 big_sync->big_handle = big_sync_params->big_handle; 10524 big_sync->params = big_sync_params; 10525 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10526 big_sync->num_bis = big_sync_params->num_bis; 10527 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10528 10529 hci_run(); 10530 10531 return ERROR_CODE_SUCCESS; 10532 } 10533 10534 uint8_t gap_big_terminate(uint8_t big_handle){ 10535 le_audio_big_t * big = hci_big_for_handle(big_handle); 10536 if (big == NULL){ 10537 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10538 } 10539 switch (big->state){ 10540 case LE_AUDIO_BIG_STATE_CREATE: 10541 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10542 hci_emit_big_terminated(big); 10543 break; 10544 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10545 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10546 break; 10547 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10548 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10549 case LE_AUDIO_BIG_STATE_ACTIVE: 10550 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10551 hci_run(); 10552 break; 10553 default: 10554 return ERROR_CODE_COMMAND_DISALLOWED; 10555 } 10556 return ERROR_CODE_SUCCESS; 10557 } 10558 10559 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10560 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10561 if (big_sync == NULL){ 10562 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10563 } 10564 switch (big_sync->state){ 10565 case LE_AUDIO_BIG_STATE_CREATE: 10566 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10567 hci_emit_big_sync_stopped(big_handle); 10568 break; 10569 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10570 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10571 break; 10572 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10573 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10574 case LE_AUDIO_BIG_STATE_ACTIVE: 10575 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10576 hci_run(); 10577 break; 10578 default: 10579 return ERROR_CODE_COMMAND_DISALLOWED; 10580 } 10581 return ERROR_CODE_SUCCESS; 10582 } 10583 10584 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10585 le_audio_big_t * big = hci_big_for_handle(big_handle); 10586 if (big == NULL){ 10587 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10588 } 10589 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10590 return ERROR_CODE_COMMAND_DISALLOWED; 10591 } 10592 big->can_send_now_requested = true; 10593 hci_iso_notify_can_send_now(); 10594 return ERROR_CODE_SUCCESS; 10595 } 10596 10597 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10598 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10599 if (iso_stream == NULL){ 10600 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10601 } 10602 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10603 return ERROR_CODE_COMMAND_DISALLOWED; 10604 } 10605 iso_stream->can_send_now_requested = true; 10606 hci_iso_notify_can_send_now(); 10607 return ERROR_CODE_SUCCESS; 10608 } 10609 10610 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10611 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10612 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10613 } 10614 if (cig_params->num_cis == 0){ 10615 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10616 } 10617 if (cig_params->num_cis > MAX_NR_CIS){ 10618 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10619 } 10620 10621 // reserve ISO Streams 10622 uint8_t i; 10623 uint8_t status = ERROR_CODE_SUCCESS; 10624 for (i=0;i<cig_params->num_cis;i++){ 10625 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10626 if (iso_stream == NULL) { 10627 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10628 break; 10629 } 10630 } 10631 10632 // free structs on error 10633 if (status != ERROR_CODE_SUCCESS){ 10634 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10635 return status; 10636 } 10637 10638 le_audio_cig_t * cig = storage; 10639 cig->cig_id = cig_params->cig_id; 10640 cig->num_cis = cig_params->num_cis; 10641 cig->params = cig_params; 10642 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10643 for (i=0;i<cig->num_cis;i++){ 10644 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10645 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10646 cig->cis_setup_active[i] = false; 10647 cig->cis_established[i] = false; 10648 } 10649 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10650 10651 hci_run(); 10652 10653 return ERROR_CODE_SUCCESS; 10654 } 10655 10656 uint8_t gap_cig_remove(uint8_t cig_id){ 10657 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10658 if (cig == NULL){ 10659 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10660 } 10661 10662 // close active CIS 10663 uint8_t i; 10664 for (i=0;i<cig->num_cis;i++){ 10665 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10666 if (stream != NULL){ 10667 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10668 } 10669 } 10670 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10671 10672 hci_run(); 10673 10674 return ERROR_CODE_SUCCESS; 10675 } 10676 10677 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10678 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10679 if (cig == NULL){ 10680 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10681 } 10682 10683 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10684 return ERROR_CODE_COMMAND_DISALLOWED; 10685 } 10686 10687 // store ACL Connection Handles 10688 uint8_t i; 10689 for (i=0;i<cig->num_cis;i++){ 10690 // check that all con handles exist and store 10691 hci_con_handle_t cis_handle = cis_con_handles[i]; 10692 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10693 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10694 } 10695 uint8_t j; 10696 bool found = false; 10697 for (j=0;j<cig->num_cis;j++){ 10698 if (cig->cis_con_handles[j] == cis_handle){ 10699 cig->acl_con_handles[j] = acl_con_handles[j]; 10700 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10701 btstack_assert(iso_stream != NULL); 10702 iso_stream->acl_handle = acl_con_handles[j]; 10703 found = true; 10704 break; 10705 } 10706 } 10707 if (!found){ 10708 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10709 } 10710 } 10711 10712 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10713 hci_run(); 10714 10715 return ERROR_CODE_SUCCESS; 10716 } 10717 10718 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10719 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10720 if (iso_stream == NULL){ 10721 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10722 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10723 } 10724 10725 // set next state and continue 10726 iso_stream->state = state; 10727 hci_run(); 10728 return ERROR_CODE_SUCCESS; 10729 } 10730 10731 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10732 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10733 } 10734 10735 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10736 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10737 } 10738 10739 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10740 10741 // GAP Privacy - notify clients before random address update 10742 10743 static bool gap_privacy_client_all_ready(void){ 10744 // check if all ready 10745 btstack_linked_list_iterator_t it; 10746 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10747 while (btstack_linked_list_iterator_has_next(&it)) { 10748 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10749 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10750 return false; 10751 } 10752 } 10753 return true; 10754 } 10755 10756 static void gap_privacy_clients_handle_ready(void){ 10757 // clear 'ready' 10758 btstack_linked_list_iterator_t it; 10759 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10760 while (btstack_linked_list_iterator_has_next(&it)) { 10761 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10762 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10763 } 10764 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10765 hci_run(); 10766 } 10767 10768 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10769 btstack_linked_list_iterator_t it; 10770 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10771 while (btstack_linked_list_iterator_has_next(&it)) { 10772 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10773 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10774 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10775 (*client->callback)(client, new_random_address); 10776 } 10777 } 10778 if (gap_privacy_client_all_ready()){ 10779 gap_privacy_clients_handle_ready(); 10780 } 10781 } 10782 10783 void gap_privacy_client_register(gap_privacy_client_t * client){ 10784 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10785 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10786 } 10787 10788 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10789 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10790 if (gap_privacy_client_all_ready()){ 10791 gap_privacy_clients_handle_ready(); 10792 } 10793 } 10794 10795 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10796 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10797 } 10798 10799 #endif /* ENABLE_BLE */ 10800 10801 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10802 void hci_setup_test_connections_fuzz(void){ 10803 hci_connection_t * conn; 10804 10805 // default address: 66:55:44:33:00:01 10806 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10807 10808 // setup Controller info 10809 hci_stack->num_cmd_packets = 255; 10810 hci_stack->acl_packets_total_num = 255; 10811 10812 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10813 addr[5] = 0x01; 10814 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10815 conn->con_handle = addr[5]; 10816 conn->state = RECEIVED_CONNECTION_REQUEST; 10817 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10818 10819 // setup incoming Classic SCO connection with con handle 0x0002 10820 addr[5] = 0x02; 10821 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10822 conn->con_handle = addr[5]; 10823 conn->state = RECEIVED_CONNECTION_REQUEST; 10824 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10825 10826 // setup ready Classic ACL connection with con handle 0x0003 10827 addr[5] = 0x03; 10828 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10829 conn->con_handle = addr[5]; 10830 conn->state = OPEN; 10831 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10832 10833 // setup ready Classic SCO connection with con handle 0x0004 10834 addr[5] = 0x04; 10835 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10836 conn->con_handle = addr[5]; 10837 conn->state = OPEN; 10838 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10839 10840 // setup ready LE ACL connection with con handle 0x005 and public address 10841 addr[5] = 0x05; 10842 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10843 conn->con_handle = addr[5]; 10844 conn->state = OPEN; 10845 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10846 conn->sm_connection.sm_connection_encrypted = 1; 10847 } 10848 10849 void hci_free_connections_fuzz(void){ 10850 btstack_linked_list_iterator_t it; 10851 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10852 while (btstack_linked_list_iterator_has_next(&it)){ 10853 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10854 btstack_linked_list_iterator_remove(&it); 10855 btstack_memory_hci_connection_free(con); 10856 } 10857 } 10858 void hci_simulate_working_fuzz(void){ 10859 hci_stack->le_scanning_param_update = false; 10860 hci_init_done(); 10861 hci_stack->num_cmd_packets = 255; 10862 } 10863 #endif 10864