1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES , 27, 5) \ 171 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 172 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 173 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 175 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 176 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 178 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 179 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 180 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 181 182 // enumerate supported commands 183 #define X(name, offset, bit) name, 184 enum { 185 SUPPORTED_HCI_COMMANDS 186 SUPPORTED_HCI_COMMANDS_COUNT 187 }; 188 #undef X 189 190 // prototypes 191 #ifdef ENABLE_CLASSIC 192 static void hci_update_scan_enable(void); 193 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 194 static int hci_local_ssp_activated(void); 195 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 196 static bool hci_ssp_supported(hci_connection_t * connection); 197 static void hci_notify_if_sco_can_send_now(void); 198 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 199 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 200 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 201 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 202 static void hci_connection_timestamp(hci_connection_t *connection); 203 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 204 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 205 #endif 206 207 static int hci_power_control_on(void); 208 static void hci_power_control_off(void); 209 static void hci_state_reset(void); 210 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 211 static void hci_emit_transport_packet_sent(void); 212 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 213 static void hci_emit_nr_connections_changed(void); 214 static void hci_emit_hci_open_failed(void); 215 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 216 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 217 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 218 static void hci_run(void); 219 static bool hci_is_le_connection(hci_connection_t * connection); 220 static uint8_t hci_send_prepared_cmd_packet(void); 221 222 #ifdef ENABLE_CLASSIC 223 static int hci_have_usb_transport(void); 224 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 225 #endif 226 227 #ifdef ENABLE_BLE 228 static bool hci_run_general_gap_le(void); 229 static void gap_privacy_clients_handle_ready(void); 230 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 231 #ifdef ENABLE_LE_CENTRAL 232 // called from test/ble_client/advertising_data_parser.c 233 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 234 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 235 static hci_connection_t * gap_get_outgoing_le_connection(void); 236 static void hci_le_scan_stop(void); 237 #endif 238 #ifdef ENABLE_LE_PERIPHERAL 239 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 240 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 241 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len); 242 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size); 243 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 244 #endif /* ENABLE_LE_PERIPHERAL */ 245 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 246 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); 247 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 248 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 249 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 250 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 251 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 252 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 253 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 254 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 255 static void hci_iso_notify_can_send_now(void); 256 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 257 static void hci_emit_big_terminated(const le_audio_big_t * big); 258 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 259 static void hci_emit_big_sync_stopped(uint8_t big_handle); 260 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 261 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 262 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 263 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 264 #endif /* ENABLE_BLE */ 265 266 // the STACK is here 267 #ifndef HAVE_MALLOC 268 static hci_stack_t hci_stack_static; 269 #endif 270 static hci_stack_t * hci_stack = NULL; 271 272 #ifdef ENABLE_CLASSIC 273 // default name 274 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 275 276 // test helper 277 static uint8_t disable_l2cap_timeouts = 0; 278 #endif 279 280 // reset connection state on create and on reconnect 281 // don't overwrite addr, con handle, role 282 static void hci_connection_init(hci_connection_t * conn){ 283 conn->authentication_flags = AUTH_FLAG_NONE; 284 conn->bonding_flags = 0; 285 conn->requested_security_level = LEVEL_0; 286 conn->link_key_type = INVALID_LINK_KEY; 287 #ifdef ENABLE_CLASSIC 288 conn->request_role = HCI_ROLE_INVALID; 289 conn->sniff_subrating_max_latency = 0xffff; 290 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 291 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 292 btstack_run_loop_set_timer_context(&conn->timeout, conn); 293 hci_connection_timestamp(conn); 294 #endif 295 conn->acl_recombination_length = 0; 296 conn->acl_recombination_pos = 0; 297 conn->num_packets_sent = 0; 298 299 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 300 #ifdef ENABLE_BLE 301 conn->le_phy_update_all_phys = 0xff; 302 #endif 303 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 304 conn->le_max_tx_octets = 27; 305 #endif 306 #ifdef ENABLE_CLASSIC_PAIRING_OOB 307 conn->classic_oob_c_192 = NULL; 308 conn->classic_oob_r_192 = NULL; 309 conn->classic_oob_c_256 = NULL; 310 conn->classic_oob_r_256 = NULL; 311 #endif 312 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 313 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 314 conn->le_past_advertising_handle = 0xff; 315 #endif 316 } 317 318 /** 319 * create connection for given address 320 * 321 * @return connection OR NULL, if no memory left 322 */ 323 static hci_connection_t * 324 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 325 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 326 327 hci_connection_t * conn = btstack_memory_hci_connection_get(); 328 if (!conn) return NULL; 329 hci_connection_init(conn); 330 331 bd_addr_copy(conn->address, addr); 332 conn->address_type = addr_type; 333 conn->con_handle = HCI_CON_HANDLE_INVALID; 334 conn->role = role; 335 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 336 337 return conn; 338 } 339 340 341 /** 342 * get le connection parameter range 343 * 344 * @return le connection parameter range struct 345 */ 346 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 347 *range = hci_stack->le_connection_parameter_range; 348 } 349 350 /** 351 * set le connection parameter range 352 * 353 */ 354 355 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 356 hci_stack->le_connection_parameter_range = *range; 357 } 358 359 /** 360 * @brief Test if connection parameters are inside in existing rage 361 * @param conn_interval_min (unit: 1.25ms) 362 * @param conn_interval_max (unit: 1.25ms) 363 * @param conn_latency 364 * @param supervision_timeout (unit: 10ms) 365 * @return 1 if included 366 */ 367 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){ 368 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 369 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 370 371 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 372 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 373 374 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 375 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 376 377 return 1; 378 } 379 380 /** 381 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 382 * @note: default: 1 383 * @param max_peripheral_connections 384 */ 385 #ifdef ENABLE_LE_PERIPHERAL 386 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 387 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 388 } 389 #endif 390 391 /** 392 * get hci connections iterator 393 * 394 * @return hci connections iterator 395 */ 396 397 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 398 btstack_linked_list_iterator_init(it, &hci_stack->connections); 399 } 400 401 /** 402 * get connection for a given handle 403 * 404 * @return connection OR NULL, if not found 405 */ 406 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 407 btstack_linked_list_iterator_t it; 408 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 409 while (btstack_linked_list_iterator_has_next(&it)){ 410 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 411 if ( item->con_handle == con_handle ) { 412 return item; 413 } 414 } 415 return NULL; 416 } 417 418 /** 419 * get connection for given address 420 * 421 * @return connection OR NULL, if not found 422 */ 423 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 424 btstack_linked_list_iterator_t it; 425 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 426 while (btstack_linked_list_iterator_has_next(&it)){ 427 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 428 if (connection->address_type != addr_type) continue; 429 if (memcmp(addr, connection->address, 6) != 0) continue; 430 return connection; 431 } 432 return NULL; 433 } 434 435 #ifdef ENABLE_CLASSIC 436 437 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 438 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 439 } 440 441 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 442 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 443 } 444 445 #ifdef ENABLE_SCO_OVER_HCI 446 static int hci_number_sco_connections(void){ 447 int connections = 0; 448 btstack_linked_list_iterator_t it; 449 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 450 while (btstack_linked_list_iterator_has_next(&it)){ 451 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 452 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 453 connections++; 454 } 455 return connections; 456 } 457 #endif 458 459 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 460 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 461 #ifdef HAVE_EMBEDDED_TICK 462 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 463 // connections might be timed out 464 hci_emit_l2cap_check_timeout(connection); 465 } 466 #else 467 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 468 // connections might be timed out 469 hci_emit_l2cap_check_timeout(connection); 470 } 471 #endif 472 } 473 474 static void hci_connection_timestamp(hci_connection_t *connection){ 475 #ifdef HAVE_EMBEDDED_TICK 476 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 477 #else 478 connection->timestamp = btstack_run_loop_get_time_ms(); 479 #endif 480 } 481 482 /** 483 * add authentication flags and reset timer 484 * @note: assumes classic connection 485 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 486 */ 487 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 488 bd_addr_t addr; 489 reverse_bd_addr(bd_addr, addr); 490 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 491 if (conn) { 492 connectionSetAuthenticationFlags(conn, flags); 493 hci_connection_timestamp(conn); 494 } 495 } 496 497 static bool hci_pairing_active(hci_connection_t * hci_connection){ 498 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 499 } 500 501 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 502 if (hci_pairing_active(hci_connection)) return; 503 if (ssp){ 504 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 505 } else { 506 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 507 } 508 // if we are initiator, we have sent an HCI Authenticate Request 509 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 510 511 // if we are responder, use minimal service security level as required level 512 if (!initiator){ 513 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); 514 } 515 516 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 517 518 uint8_t event[12]; 519 event[0] = GAP_EVENT_PAIRING_STARTED; 520 event[1] = 10; 521 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 522 reverse_bd_addr(hci_connection->address, &event[4]); 523 event[10] = (uint8_t) ssp; 524 event[11] = (uint8_t) initiator; 525 hci_emit_event(event, sizeof(event), 1); 526 } 527 528 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 529 hci_connection->requested_security_level = LEVEL_0; 530 if (!hci_pairing_active(hci_connection)) return; 531 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 532 #ifdef ENABLE_CLASSIC_PAIRING_OOB 533 hci_connection->classic_oob_c_192 = NULL; 534 hci_connection->classic_oob_r_192 = NULL; 535 hci_connection->classic_oob_c_256 = NULL; 536 hci_connection->classic_oob_r_256 = NULL; 537 #endif 538 log_info("pairing complete, status %02x", status); 539 540 uint8_t event[11]; 541 event[0] = GAP_EVENT_PAIRING_COMPLETE; 542 event[1] = 9; 543 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 544 reverse_bd_addr(hci_connection->address, &event[4]); 545 event[10] = status; 546 hci_emit_event(event, sizeof(event), 1); 547 548 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 549 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 550 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 551 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 552 hci_connection->bonding_status = status; 553 } 554 } 555 556 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 557 hci_connection_t * conn = hci_connection_for_handle(handle); 558 if (!conn) return false; 559 return hci_pairing_active(conn); 560 } 561 562 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 563 if (!hci_stack->link_key_db) return; 564 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 565 hci_stack->link_key_db->delete_link_key(addr); 566 } 567 568 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 569 if (!hci_stack->link_key_db) return; 570 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 571 hci_stack->link_key_db->put_link_key(addr, link_key, type); 572 } 573 574 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 575 if (!hci_stack->link_key_db) return false; 576 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 577 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 578 return result; 579 } 580 581 void gap_delete_all_link_keys(void){ 582 bd_addr_t addr; 583 link_key_t link_key; 584 link_key_type_t type; 585 btstack_link_key_iterator_t it; 586 int ok = gap_link_key_iterator_init(&it); 587 if (!ok) { 588 log_error("could not initialize iterator"); 589 return; 590 } 591 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 592 gap_drop_link_key_for_bd_addr(addr); 593 } 594 gap_link_key_iterator_done(&it); 595 } 596 597 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 598 if (!hci_stack->link_key_db) return 0; 599 if (!hci_stack->link_key_db->iterator_init) return 0; 600 return hci_stack->link_key_db->iterator_init(it); 601 } 602 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){ 603 if (!hci_stack->link_key_db) return 0; 604 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 605 } 606 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 607 if (!hci_stack->link_key_db) return; 608 hci_stack->link_key_db->iterator_done(it); 609 } 610 #endif 611 612 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 613 switch (address_type){ 614 case BD_ADDR_TYPE_LE_PUBLIC: 615 case BD_ADDR_TYPE_LE_RANDOM: 616 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 617 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 618 return true; 619 default: 620 return false; 621 } 622 } 623 624 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 625 switch (address_type){ 626 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 627 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 628 return true; 629 default: 630 return false; 631 } 632 } 633 634 static bool hci_is_le_connection(hci_connection_t * connection){ 635 return hci_is_le_connection_type(connection->address_type); 636 } 637 638 /** 639 * count connections 640 */ 641 static int nr_hci_connections(void){ 642 int count = 0; 643 btstack_linked_item_t *it; 644 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 645 count++; 646 } 647 return count; 648 } 649 650 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 651 652 unsigned int num_packets_sent_classic = 0; 653 unsigned int num_packets_sent_le = 0; 654 655 btstack_linked_item_t *it; 656 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 657 hci_connection_t * connection = (hci_connection_t *) it; 658 if (hci_is_le_connection(connection)){ 659 num_packets_sent_le += connection->num_packets_sent; 660 } 661 if (connection->address_type == BD_ADDR_TYPE_ACL){ 662 num_packets_sent_classic += connection->num_packets_sent; 663 } 664 } 665 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 666 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 667 int free_slots_le = 0; 668 669 if (free_slots_classic < 0){ 670 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); 671 return 0; 672 } 673 674 if (hci_stack->le_acl_packets_total_num){ 675 // if we have LE slots, they are used 676 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 677 if (free_slots_le < 0){ 678 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); 679 return 0; 680 } 681 } else { 682 // otherwise, classic slots are used for LE, too 683 free_slots_classic -= num_packets_sent_le; 684 if (free_slots_classic < 0){ 685 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); 686 return 0; 687 } 688 } 689 690 switch (address_type){ 691 case BD_ADDR_TYPE_UNKNOWN: 692 log_error("hci_number_free_acl_slots: unknown address type"); 693 return 0; 694 695 case BD_ADDR_TYPE_ACL: 696 return (uint16_t) free_slots_classic; 697 698 default: 699 if (hci_stack->le_acl_packets_total_num > 0){ 700 return (uint16_t) free_slots_le; 701 } 702 return (uint16_t) free_slots_classic; 703 } 704 } 705 706 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 707 // get connection type 708 hci_connection_t * connection = hci_connection_for_handle(con_handle); 709 if (!connection){ 710 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 711 return 0; 712 } 713 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 714 } 715 716 #ifdef ENABLE_CLASSIC 717 static int hci_number_free_sco_slots(void){ 718 unsigned int num_sco_packets_sent = 0; 719 btstack_linked_item_t *it; 720 if (hci_stack->synchronous_flow_control_enabled){ 721 // explicit flow control 722 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 723 hci_connection_t * connection = (hci_connection_t *) it; 724 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 725 num_sco_packets_sent += connection->num_packets_sent; 726 } 727 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 728 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 729 return 0; 730 } 731 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 732 } else { 733 // implicit flow control 734 int num_ready = 0; 735 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 736 hci_connection_t * connection = (hci_connection_t *) it; 737 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 738 if (connection->sco_tx_ready == 0) continue; 739 num_ready++; 740 } 741 return num_ready; 742 } 743 } 744 #endif 745 746 // only used to send HCI Host Number Completed Packets 747 static int hci_can_send_comand_packet_transport(void){ 748 if (hci_stack->hci_packet_buffer_reserved) return 0; 749 750 // check for async hci transport implementations 751 if (hci_stack->hci_transport->can_send_packet_now){ 752 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 753 return 0; 754 } 755 } 756 return 1; 757 } 758 759 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 760 bool hci_can_send_command_packet_now(void){ 761 if (hci_can_send_comand_packet_transport() == 0) return false; 762 return hci_stack->num_cmd_packets > 0u; 763 } 764 765 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 766 // check for async hci transport implementations 767 if (!hci_stack->hci_transport->can_send_packet_now) return true; 768 return hci_stack->hci_transport->can_send_packet_now(packet_type); 769 } 770 771 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 772 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 773 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 774 } 775 776 bool hci_can_send_acl_le_packet_now(void){ 777 if (hci_stack->hci_packet_buffer_reserved) return false; 778 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 779 } 780 781 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 782 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 783 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 784 } 785 786 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 787 if (hci_stack->hci_packet_buffer_reserved) return false; 788 return hci_can_send_prepared_acl_packet_now(con_handle); 789 } 790 791 #ifdef ENABLE_CLASSIC 792 bool hci_can_send_acl_classic_packet_now(void){ 793 if (hci_stack->hci_packet_buffer_reserved) return false; 794 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 795 } 796 797 bool hci_can_send_prepared_sco_packet_now(void){ 798 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 799 if (hci_have_usb_transport()){ 800 return hci_stack->sco_can_send_now; 801 } else { 802 return hci_number_free_sco_slots() > 0; 803 } 804 } 805 806 bool hci_can_send_sco_packet_now(void){ 807 if (hci_stack->hci_packet_buffer_reserved) return false; 808 return hci_can_send_prepared_sco_packet_now(); 809 } 810 811 void hci_request_sco_can_send_now_event(void){ 812 hci_stack->sco_waiting_for_can_send_now = 1; 813 hci_notify_if_sco_can_send_now(); 814 } 815 #endif 816 817 // used for internal checks in l2cap.c 818 bool hci_is_packet_buffer_reserved(void){ 819 return hci_stack->hci_packet_buffer_reserved; 820 } 821 822 void hci_reserve_packet_buffer(void){ 823 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 824 hci_stack->hci_packet_buffer_reserved = true; 825 } 826 827 void hci_release_packet_buffer(void){ 828 btstack_assert(hci_stack->hci_packet_buffer_reserved); 829 hci_stack->hci_packet_buffer_reserved = false; 830 hci_emit_transport_packet_sent(); 831 } 832 833 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 834 static int hci_transport_synchronous(void){ 835 return hci_stack->hci_transport->can_send_packet_now == NULL; 836 } 837 838 // used for debugging 839 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 840 static void hci_controller_dump_packets(void){ 841 // format: "{handle:04x}:{count:02d} " 842 char summaries[3][7 * 8 + 1]; 843 uint16_t totals[3]; 844 uint8_t index; 845 for (index = 0 ; index < 3 ; index++){ 846 summaries[index][0] = 0; 847 totals[index] = 0; 848 } 849 btstack_linked_item_t *it; 850 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 851 hci_connection_t * connection = (hci_connection_t *) it; 852 switch (connection->address_type){ 853 case BD_ADDR_TYPE_ACL: 854 index = 0; 855 break; 856 case BD_ADDR_TYPE_SCO: 857 index = 2; 858 break; 859 default: 860 index = 1; 861 break; 862 } 863 totals[index] += connection->num_packets_sent; 864 char item_text[10]; 865 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 866 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 867 } 868 for (index = 0 ; index < 3 ; index++){ 869 if (summaries[index][0] == 0){ 870 summaries[index][0] = '-'; 871 summaries[index][1] = 0; 872 } 873 } 874 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]); 875 } 876 #endif 877 878 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 879 880 // 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); 881 882 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 883 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 884 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 885 max_acl_data_packet_length = hci_stack->le_data_packets_length; 886 } 887 888 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 889 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 890 max_acl_data_packet_length = connection->le_max_tx_octets; 891 } 892 #endif 893 894 log_debug("hci_send_acl_packet_fragments entered"); 895 896 uint8_t status = ERROR_CODE_SUCCESS; 897 // multiple packets could be send on a synchronous HCI transport 898 while (true){ 899 900 log_debug("hci_send_acl_packet_fragments loop entered"); 901 902 // get current data 903 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 904 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 905 bool more_fragments = false; 906 907 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 908 if (current_acl_data_packet_length > max_acl_data_packet_length){ 909 more_fragments = true; 910 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 911 } 912 913 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 914 if (acl_header_pos > 0u){ 915 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 916 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 917 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 918 } 919 920 // update header len 921 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 922 923 // count packet 924 connection->num_packets_sent++; 925 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 926 927 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 928 if (more_fragments){ 929 // update start of next fragment to send 930 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 931 } else { 932 // done 933 hci_stack->acl_fragmentation_pos = 0; 934 hci_stack->acl_fragmentation_total_size = 0; 935 } 936 937 // send packet 938 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 939 const int size = current_acl_data_packet_length + 4; 940 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 941 hci_stack->acl_fragmentation_tx_active = 1; 942 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 943 if (err != 0){ 944 // no error from HCI Transport expected 945 status = ERROR_CODE_HARDWARE_FAILURE; 946 break; 947 } 948 949 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 950 hci_controller_dump_packets(); 951 #endif 952 953 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 954 955 // done yet? 956 if (!more_fragments) break; 957 958 // can send more? 959 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 960 } 961 962 log_debug("hci_send_acl_packet_fragments loop over"); 963 964 // release buffer now for synchronous transport 965 if (hci_transport_synchronous()){ 966 hci_stack->acl_fragmentation_tx_active = 0; 967 hci_release_packet_buffer(); 968 } 969 970 return status; 971 } 972 973 // pre: caller has reserved the packet buffer 974 uint8_t hci_send_acl_packet_buffer(int size){ 975 btstack_assert(hci_stack->hci_packet_buffer_reserved); 976 977 uint8_t * packet = hci_stack->hci_packet_buffer; 978 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 979 980 hci_connection_t *connection = hci_connection_for_handle( con_handle); 981 if (!connection) { 982 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 983 hci_release_packet_buffer(); 984 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 985 } 986 987 // check for free places on Bluetooth module 988 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 989 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 990 hci_release_packet_buffer(); 991 return BTSTACK_ACL_BUFFERS_FULL; 992 } 993 994 #ifdef ENABLE_CLASSIC 995 hci_connection_timestamp(connection); 996 #endif 997 998 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 999 1000 // setup data 1001 hci_stack->acl_fragmentation_total_size = size; 1002 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1003 1004 return hci_send_acl_packet_fragments(connection); 1005 } 1006 1007 #ifdef ENABLE_CLASSIC 1008 // pre: caller has reserved the packet buffer 1009 uint8_t hci_send_sco_packet_buffer(int size){ 1010 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1011 1012 uint8_t * packet = hci_stack->hci_packet_buffer; 1013 1014 // skip checks in loopback mode 1015 if (!hci_stack->loopback_mode){ 1016 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1017 1018 // check for free places on Bluetooth module 1019 if (!hci_can_send_prepared_sco_packet_now()) { 1020 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1021 hci_release_packet_buffer(); 1022 return BTSTACK_ACL_BUFFERS_FULL; 1023 } 1024 1025 // track send packet in connection struct 1026 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1027 if (!connection) { 1028 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1029 hci_release_packet_buffer(); 1030 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1031 } 1032 1033 if (hci_have_usb_transport()){ 1034 // token used 1035 hci_stack->sco_can_send_now = false; 1036 } else { 1037 if (hci_stack->synchronous_flow_control_enabled){ 1038 connection->num_packets_sent++; 1039 } else { 1040 connection->sco_tx_ready--; 1041 } 1042 } 1043 } 1044 1045 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1046 1047 #ifdef HAVE_SCO_TRANSPORT 1048 hci_stack->sco_transport->send_packet(packet, size); 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 1052 return 0; 1053 #else 1054 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1055 uint8_t status; 1056 if (err == 0){ 1057 status = ERROR_CODE_SUCCESS; 1058 } else { 1059 status = ERROR_CODE_HARDWARE_FAILURE; 1060 } 1061 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 1062 hci_release_packet_buffer(); 1063 } 1064 return status; 1065 #endif 1066 } 1067 #endif 1068 1069 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1070 static uint8_t hci_send_iso_packet_fragments(void){ 1071 1072 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1073 uint8_t status = ERROR_CODE_SUCCESS; 1074 // multiple packets could be send on a synchronous HCI transport 1075 while (true){ 1076 1077 // get current data 1078 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1079 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1080 bool more_fragments = false; 1081 1082 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1083 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1084 more_fragments = true; 1085 current_iso_data_packet_length = max_iso_data_packet_length; 1086 } 1087 1088 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1089 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1090 uint8_t pb_flags; 1091 if (iso_header_pos == 0u){ 1092 // first fragment, keep TS field 1093 pb_flags = more_fragments ? 0x00 : 0x02; 1094 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1095 } else { 1096 // later fragment, drop TS field 1097 pb_flags = more_fragments ? 0x01 : 0x03; 1098 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1099 } 1100 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1101 1102 // update header len 1103 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1104 1105 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1106 if (more_fragments){ 1107 // update start of next fragment to send 1108 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1109 } else { 1110 // done 1111 hci_stack->iso_fragmentation_pos = 0; 1112 hci_stack->iso_fragmentation_total_size = 0; 1113 } 1114 1115 // send packet 1116 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1117 const int size = current_iso_data_packet_length + 4; 1118 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1119 hci_stack->iso_fragmentation_tx_active = true; 1120 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1121 if (err != 0){ 1122 // no error from HCI Transport expected 1123 status = ERROR_CODE_HARDWARE_FAILURE; 1124 } 1125 1126 // done yet? 1127 if (!more_fragments) break; 1128 1129 // can send more? 1130 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1131 } 1132 1133 // release buffer now for synchronous transport 1134 if (hci_transport_synchronous()){ 1135 hci_stack->iso_fragmentation_tx_active = false; 1136 hci_release_packet_buffer(); 1137 hci_emit_transport_packet_sent(); 1138 } 1139 1140 return status; 1141 } 1142 1143 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1144 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1145 1146 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1147 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1148 if (iso_stream == NULL){ 1149 hci_release_packet_buffer(); 1150 hci_iso_notify_can_send_now(); 1151 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1152 } 1153 1154 // TODO: check for space on controller 1155 1156 // skip iso packets if needed 1157 if (iso_stream->num_packets_to_skip > 0){ 1158 iso_stream->num_packets_to_skip--; 1159 // pretend it was processed and trigger next one 1160 hci_release_packet_buffer(); 1161 hci_iso_notify_can_send_now(); 1162 return ERROR_CODE_SUCCESS; 1163 } 1164 1165 // track outgoing packet sent 1166 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1167 iso_stream->num_packets_sent++; 1168 1169 // setup data 1170 hci_stack->iso_fragmentation_total_size = size; 1171 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1172 1173 return hci_send_iso_packet_fragments(); 1174 } 1175 #endif 1176 1177 static void acl_handler(uint8_t *packet, uint16_t size){ 1178 1179 // get info 1180 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1181 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1182 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1183 uint16_t acl_length = READ_ACL_LENGTH(packet); 1184 1185 // ignore non-registered handle 1186 if (!conn){ 1187 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1188 return; 1189 } 1190 1191 // assert packet is complete 1192 if ((acl_length + 4u) != size){ 1193 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1194 return; 1195 } 1196 1197 #ifdef ENABLE_CLASSIC 1198 // update idle timestamp 1199 hci_connection_timestamp(conn); 1200 #endif 1201 1202 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1203 hci_stack->host_completed_packets = 1; 1204 conn->num_packets_completed++; 1205 #endif 1206 1207 // handle different packet types 1208 switch (acl_flags & 0x03u) { 1209 1210 case 0x01: // continuation fragment 1211 1212 // sanity checks 1213 if (conn->acl_recombination_pos == 0u) { 1214 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1215 return; 1216 } 1217 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1218 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1219 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1220 conn->acl_recombination_pos = 0; 1221 return; 1222 } 1223 1224 // append fragment payload (header already stored) 1225 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1226 &packet[4], acl_length); 1227 conn->acl_recombination_pos += acl_length; 1228 1229 // forward complete L2CAP packet if complete. 1230 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1231 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1232 // reset recombination buffer 1233 conn->acl_recombination_length = 0; 1234 conn->acl_recombination_pos = 0; 1235 } 1236 break; 1237 1238 case 0x02: { // first fragment 1239 1240 // sanity check 1241 if (conn->acl_recombination_pos) { 1242 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1243 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1244 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1245 } 1246 conn->acl_recombination_pos = 0; 1247 } 1248 1249 // peek into L2CAP packet! 1250 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1251 1252 // compare fragment size to L2CAP packet size 1253 if (acl_length >= (l2cap_length + 4u)){ 1254 // forward fragment as L2CAP packet 1255 hci_emit_acl_packet(packet, acl_length + 4u); 1256 } else { 1257 1258 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1259 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1260 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1261 return; 1262 } 1263 1264 // store first fragment and tweak acl length for complete package 1265 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1266 packet, acl_length + 4u); 1267 conn->acl_recombination_pos = acl_length + 4u; 1268 conn->acl_recombination_length = l2cap_length; 1269 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1270 } 1271 break; 1272 1273 } 1274 default: 1275 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1276 return; 1277 } 1278 1279 // execute main loop 1280 hci_run(); 1281 } 1282 1283 static void hci_connection_stop_timer(hci_connection_t * conn){ 1284 btstack_run_loop_remove_timer(&conn->timeout); 1285 #ifdef ENABLE_CLASSIC 1286 btstack_run_loop_remove_timer(&conn->timeout_sco); 1287 #endif 1288 } 1289 1290 static void hci_shutdown_connection(hci_connection_t *conn){ 1291 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1292 1293 #ifdef ENABLE_CLASSIC 1294 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1295 bd_addr_type_t addr_type = conn->address_type; 1296 #endif 1297 #ifdef HAVE_SCO_TRANSPORT 1298 hci_con_handle_t con_handle = conn->con_handle; 1299 #endif 1300 #endif 1301 1302 hci_connection_stop_timer(conn); 1303 1304 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1305 btstack_memory_hci_connection_free( conn ); 1306 1307 // now it's gone 1308 hci_emit_nr_connections_changed(); 1309 1310 #ifdef ENABLE_CLASSIC 1311 #ifdef ENABLE_SCO_OVER_HCI 1312 // update SCO 1313 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1314 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1315 } 1316 #endif 1317 #ifdef HAVE_SCO_TRANSPORT 1318 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1319 hci_stack->sco_transport->close(con_handle); 1320 } 1321 #endif 1322 #endif 1323 } 1324 1325 #ifdef ENABLE_CLASSIC 1326 1327 static const uint16_t hci_acl_packet_type_sizes[] = { 1328 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1329 HCI_ACL_DH1_SIZE, 0, 0, 0, 1330 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1331 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1332 }; 1333 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1334 0, // 3 slot packets 1335 1, // 5 slot packets 1336 25, // EDR 2 mpbs 1337 26, // EDR 3 mbps 1338 39, // 3 slot EDR packts 1339 40, // 5 slot EDR packet 1340 }; 1341 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1342 0x0f00, // 3 slot packets 1343 0xf000, // 5 slot packets 1344 0x1102, // EDR 2 mpbs 1345 0x2204, // EDR 3 mbps 1346 0x0300, // 3 slot EDR packts 1347 0x3000, // 5 slot EDR packet 1348 }; 1349 1350 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1351 // enable packet types based on size 1352 uint16_t packet_types = 0; 1353 unsigned int i; 1354 for (i=0;i<16;i++){ 1355 if (hci_acl_packet_type_sizes[i] == 0) continue; 1356 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1357 packet_types |= 1 << i; 1358 } 1359 } 1360 // disable packet types due to missing local supported features 1361 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1362 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1363 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1364 if (feature_set) continue; 1365 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1366 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1367 } 1368 return packet_types; 1369 } 1370 1371 uint16_t hci_usable_acl_packet_types(void){ 1372 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1373 // flip bits for "may not be used" 1374 return active_packet_types ^ 0x3306; 1375 } 1376 1377 void hci_enable_acl_packet_types(uint16_t packet_types){ 1378 hci_stack->enabled_packet_types_acl = packet_types; 1379 } 1380 1381 static const struct { 1382 uint8_t feature_index; 1383 uint16_t feature_packet_mask; 1384 } hci_sco_packet_type_feature_requirements[] = { 1385 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1386 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1387 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1388 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1389 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1390 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1391 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1392 }; 1393 1394 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1395 static const struct { 1396 uint16_t type; 1397 uint16_t payload_length; 1398 } hci_sco_packet_type_to_payload_length[] = { 1399 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1400 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1401 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1402 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1403 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1404 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1405 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1406 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1407 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1408 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1409 }; 1410 1411 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1412 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1413 unsigned int i; 1414 // disable packet types due to missing local supported features 1415 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1416 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1417 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1418 if (feature_set) continue; 1419 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); 1420 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1421 } 1422 return packet_types; 1423 } 1424 1425 uint16_t hci_usable_sco_packet_types(void){ 1426 return hci_stack->usable_packet_types_sco; 1427 } 1428 1429 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1430 uint8_t i; 1431 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1432 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1433 return hci_sco_packet_type_to_payload_length[i].payload_length; 1434 } 1435 } 1436 return 0; 1437 } 1438 1439 #endif 1440 1441 uint8_t* hci_get_outgoing_packet_buffer(void){ 1442 // hci packet buffer is >= acl data packet length 1443 return hci_stack->hci_packet_buffer; 1444 } 1445 1446 uint16_t hci_max_acl_data_packet_length(void){ 1447 return hci_stack->acl_data_packet_length; 1448 } 1449 1450 #ifdef ENABLE_CLASSIC 1451 bool hci_extended_sco_link_supported(void){ 1452 // No. 31, byte 3, bit 7 1453 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1454 } 1455 #endif 1456 1457 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1458 // No. 54, byte 6, bit 6 1459 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1460 } 1461 1462 #ifdef ENABLE_CLASSIC 1463 static bool gap_ssp_supported(void){ 1464 // No. 51, byte 6, bit 3 1465 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1466 } 1467 #endif 1468 1469 bool hci_classic_supported(void){ 1470 #ifdef ENABLE_CLASSIC 1471 // No. 37, byte 4, bit 5, = No BR/EDR Support 1472 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1473 #else 1474 return false; 1475 #endif 1476 } 1477 1478 bool hci_le_supported(void){ 1479 #ifdef ENABLE_BLE 1480 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1481 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1482 #else 1483 return false; 1484 #endif 1485 } 1486 1487 static bool hci_command_supported(uint8_t command_index){ 1488 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1489 } 1490 1491 #ifdef ENABLE_BLE 1492 1493 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1494 bool hci_le_extended_advertising_supported(void){ 1495 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1496 } 1497 #endif 1498 1499 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1500 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1501 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1502 } else { 1503 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1504 } 1505 } 1506 1507 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1508 *addr_type = hci_stack->le_own_addr_type; 1509 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1510 } 1511 1512 #ifdef ENABLE_LE_PERIPHERAL 1513 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1514 *addr_type = hci_stack->le_advertisements_own_addr_type; 1515 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1516 }; 1517 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1518 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1519 if (advertising_handle == 0){ 1520 gap_le_get_own_advertisements_address(addr_type, addr); 1521 } else { 1522 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1523 if (advertising_set != NULL){ 1524 switch (advertising_set->extended_params.own_address_type){ 1525 case BD_ADDR_TYPE_LE_PUBLIC: 1526 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1527 memcpy(addr, hci_stack->local_bd_addr, 6); 1528 break; 1529 case BD_ADDR_TYPE_LE_RANDOM: 1530 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1531 memcpy(addr, advertising_set->random_address, 6); 1532 break; 1533 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1534 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1535 // do nothing as random address was already set from enhanced connection complete 1536 break; 1537 default: 1538 break; 1539 } 1540 } 1541 } 1542 }; 1543 #endif 1544 #endif 1545 1546 #ifdef ENABLE_LE_CENTRAL 1547 1548 /** 1549 * @brief Get own addr type and address used for LE connections (Central) 1550 */ 1551 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1552 *addr_type = hci_stack->le_connection_own_addr_type; 1553 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1554 } 1555 1556 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1557 1558 uint16_t offset = 3; 1559 uint8_t num_reports = packet[offset]; 1560 offset += 1; 1561 1562 uint16_t i; 1563 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1564 for (i=0; (i<num_reports) && (offset < size);i++){ 1565 // sanity checks on data_length: 1566 uint8_t data_length = packet[offset + 8]; 1567 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1568 if ((offset + 9u + data_length + 1u) > size) return; 1569 // setup event 1570 uint8_t event_size = 10u + data_length; 1571 uint16_t pos = 0; 1572 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1573 event[pos++] = event_size; 1574 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1575 offset += 8; 1576 pos += 8; 1577 event[pos++] = packet[offset + 1 + data_length]; // rssi 1578 event[pos++] = data_length; 1579 offset++; 1580 (void)memcpy(&event[pos], &packet[offset], data_length); 1581 pos += data_length; 1582 offset += data_length + 1u; // rssi 1583 hci_emit_event(event, pos, 1); 1584 } 1585 } 1586 1587 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1588 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1589 uint16_t offset = 3; 1590 uint8_t num_reports = packet[offset++]; 1591 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1592 uint8_t i; 1593 for (i=0; (i<num_reports) && (offset < size);i++){ 1594 // sanity checks on data_length: 1595 uint16_t data_length = packet[offset + 23]; 1596 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1597 if ((offset + 24u + data_length) > size) return; 1598 uint16_t event_type = little_endian_read_16(packet, offset); 1599 offset += 2; 1600 if ((event_type & 0x10) != 0) { 1601 // setup legacy event 1602 uint8_t legacy_event_type; 1603 switch (event_type){ 1604 case 0b0010011: 1605 // ADV_IND 1606 legacy_event_type = 0; 1607 break; 1608 case 0b0010101: 1609 // ADV_DIRECT_IND 1610 legacy_event_type = 1; 1611 break; 1612 case 0b0010010: 1613 // ADV_SCAN_IND 1614 legacy_event_type = 2; 1615 break; 1616 case 0b0010000: 1617 // ADV_NONCONN_IND 1618 legacy_event_type = 3; 1619 break; 1620 case 0b0011011: 1621 case 0b0011010: 1622 // SCAN_RSP 1623 legacy_event_type = 4; 1624 break; 1625 default: 1626 legacy_event_type = 0; 1627 break; 1628 } 1629 uint16_t pos = 0; 1630 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1631 event[pos++] = 10u + data_length; 1632 event[pos++] = legacy_event_type; 1633 // copy address type + address 1634 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1635 offset += 7; 1636 pos += 7; 1637 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1638 offset += 4; 1639 // copy rssi 1640 event[pos++] = packet[offset++]; 1641 // skip periodic advertising interval and direct address 1642 offset += 9; 1643 // copy data len + data; 1644 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1645 pos += 1 +data_length; 1646 offset += 1+ data_length; 1647 hci_emit_event(event, pos, 1); 1648 } else { 1649 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1650 uint8_t report_len = 24 + data_length; 1651 event[1] = report_len; 1652 little_endian_store_16(event, 2, event_type); 1653 memcpy(&event[4], &packet[offset], report_len); 1654 offset += report_len; 1655 hci_emit_event(event, 2 + report_len, 1); 1656 } 1657 } 1658 } 1659 #endif 1660 1661 #endif 1662 #endif 1663 1664 #ifdef ENABLE_BLE 1665 #ifdef ENABLE_LE_PERIPHERAL 1666 static void hci_update_advertisements_enabled_for_current_roles(void){ 1667 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1668 // get number of active le slave connections 1669 int num_slave_connections = 0; 1670 btstack_linked_list_iterator_t it; 1671 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1672 while (btstack_linked_list_iterator_has_next(&it)){ 1673 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1674 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1675 if (con->state != OPEN) continue; 1676 if (con->role != HCI_ROLE_SLAVE) continue; 1677 if (!hci_is_le_connection(con)) continue; 1678 num_slave_connections++; 1679 } 1680 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1681 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1682 } else { 1683 hci_stack->le_advertisements_enabled_for_current_roles = false; 1684 } 1685 } 1686 #endif 1687 #endif 1688 1689 #ifdef ENABLE_CLASSIC 1690 static void gap_run_set_local_name(void){ 1691 hci_reserve_packet_buffer(); 1692 uint8_t * packet = hci_stack->hci_packet_buffer; 1693 // construct HCI Command and send 1694 uint16_t opcode = hci_write_local_name.opcode; 1695 packet[0] = opcode & 0xff; 1696 packet[1] = opcode >> 8; 1697 packet[2] = DEVICE_NAME_LEN; 1698 memset(&packet[3], 0, DEVICE_NAME_LEN); 1699 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1700 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1701 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1702 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1703 // expand '00:00:00:00:00:00' in name with bd_addr 1704 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1705 hci_send_prepared_cmd_packet(); 1706 } 1707 1708 static void gap_run_set_eir_data(void){ 1709 hci_reserve_packet_buffer(); 1710 uint8_t * packet = hci_stack->hci_packet_buffer; 1711 // construct HCI Command in-place and send 1712 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1713 uint16_t offset = 0; 1714 packet[offset++] = opcode & 0xff; 1715 packet[offset++] = opcode >> 8; 1716 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1717 packet[offset++] = 0; // FEC not required 1718 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1719 if (hci_stack->eir_data){ 1720 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1721 ad_context_t context; 1722 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1723 uint8_t data_type = ad_iterator_get_data_type(&context); 1724 uint8_t size = ad_iterator_get_data_len(&context); 1725 const uint8_t *data = ad_iterator_get_data(&context); 1726 // copy item 1727 packet[offset++] = size + 1; 1728 packet[offset++] = data_type; 1729 memcpy(&packet[offset], data, size); 1730 // update name item 1731 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1732 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1733 } 1734 offset += size; 1735 } 1736 } else { 1737 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1738 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1739 packet[offset++] = bytes_to_copy + 1; 1740 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1741 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1742 // expand '00:00:00:00:00:00' in name with bd_addr 1743 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1744 } 1745 hci_send_prepared_cmd_packet(); 1746 } 1747 1748 static void hci_run_gap_tasks_classic(void){ 1749 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1750 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1751 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1752 return; 1753 } 1754 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1755 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1756 gap_run_set_local_name(); 1757 return; 1758 } 1759 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1760 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1761 gap_run_set_eir_data(); 1762 return; 1763 } 1764 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1765 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1766 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1767 return; 1768 } 1769 // write page scan activity 1770 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1771 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1772 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1773 return; 1774 } 1775 // write page scan type 1776 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1777 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1778 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1779 return; 1780 } 1781 // write page timeout 1782 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1783 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1784 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1785 return; 1786 } 1787 // send scan enable 1788 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1789 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1790 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1791 return; 1792 } 1793 // send write scan activity 1794 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1795 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1796 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1797 return; 1798 } 1799 // send write inquiry transmit power level 1800 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1801 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1802 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1803 return; 1804 } 1805 } 1806 #endif 1807 1808 #ifndef HAVE_HOST_CONTROLLER_API 1809 1810 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1811 if (!hci_stack->config) return 0; 1812 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1813 // Limit baud rate for Broadcom chipsets to 3 mbps 1814 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1815 baud_rate = 3000000; 1816 } 1817 return baud_rate; 1818 } 1819 1820 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1821 UNUSED(ds); 1822 1823 switch (hci_stack->substate){ 1824 case HCI_INIT_W4_SEND_RESET: 1825 log_info("Resend HCI Reset"); 1826 hci_stack->substate = HCI_INIT_SEND_RESET; 1827 hci_stack->num_cmd_packets = 1; 1828 hci_run(); 1829 break; 1830 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1831 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1832 if (hci_stack->hci_transport->reset_link){ 1833 hci_stack->hci_transport->reset_link(); 1834 } 1835 1836 /* fall through */ 1837 1838 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1839 log_info("Resend HCI Reset - CSR Warm Boot"); 1840 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1841 hci_stack->num_cmd_packets = 1; 1842 hci_run(); 1843 break; 1844 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1845 if (hci_stack->hci_transport->set_baudrate){ 1846 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1847 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1848 hci_stack->hci_transport->set_baudrate(baud_rate); 1849 } 1850 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1851 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1852 if (hci_stack->hci_transport->reset_link){ 1853 log_info("Link Reset"); 1854 hci_stack->hci_transport->reset_link(); 1855 } 1856 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1857 hci_run(); 1858 } 1859 break; 1860 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1861 // otherwise continue 1862 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1863 hci_send_cmd(&hci_read_local_supported_commands); 1864 break; 1865 default: 1866 break; 1867 } 1868 } 1869 #endif 1870 1871 static void hci_initializing_next_state(void){ 1872 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1873 } 1874 1875 static void hci_init_done(void){ 1876 // done. tell the app 1877 log_info("hci_init_done -> HCI_STATE_WORKING"); 1878 hci_stack->state = HCI_STATE_WORKING; 1879 hci_emit_state(); 1880 } 1881 1882 // assumption: hci_can_send_command_packet_now() == true 1883 static void hci_initializing_run(void){ 1884 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1885 1886 if (!hci_can_send_command_packet_now()) return; 1887 1888 #ifndef HAVE_HOST_CONTROLLER_API 1889 bool need_baud_change = hci_stack->config 1890 && hci_stack->chipset 1891 && hci_stack->chipset->set_baudrate_command 1892 && hci_stack->hci_transport->set_baudrate 1893 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1894 #endif 1895 1896 switch (hci_stack->substate){ 1897 case HCI_INIT_SEND_RESET: 1898 hci_state_reset(); 1899 1900 #ifndef HAVE_HOST_CONTROLLER_API 1901 // prepare reset if command complete not received in 100ms 1902 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1903 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1904 btstack_run_loop_add_timer(&hci_stack->timeout); 1905 #endif 1906 // send command 1907 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1908 hci_send_cmd(&hci_reset); 1909 break; 1910 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1911 hci_send_cmd(&hci_read_local_version_information); 1912 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1913 break; 1914 1915 #ifndef HAVE_HOST_CONTROLLER_API 1916 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1917 hci_state_reset(); 1918 // prepare reset if command complete not received in 100ms 1919 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1920 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1921 btstack_run_loop_add_timer(&hci_stack->timeout); 1922 // send command 1923 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1924 hci_send_cmd(&hci_reset); 1925 break; 1926 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1927 hci_state_reset(); 1928 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1929 hci_send_cmd(&hci_reset); 1930 break; 1931 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1932 hci_reserve_packet_buffer(); 1933 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1934 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1935 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1936 hci_send_prepared_cmd_packet(); 1937 break; 1938 } 1939 case HCI_INIT_SET_BD_ADDR: 1940 hci_reserve_packet_buffer(); 1941 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1942 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1943 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1944 hci_send_prepared_cmd_packet(); 1945 break; 1946 case HCI_INIT_SEND_READ_LOCAL_NAME: 1947 #ifdef ENABLE_CLASSIC 1948 hci_send_cmd(&hci_read_local_name); 1949 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1950 break; 1951 #endif 1952 /* fall through */ 1953 1954 case HCI_INIT_SEND_BAUD_CHANGE: 1955 if (need_baud_change) { 1956 hci_reserve_packet_buffer(); 1957 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1958 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1959 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1960 hci_send_prepared_cmd_packet(); 1961 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1962 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1963 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1964 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1965 btstack_run_loop_add_timer(&hci_stack->timeout); 1966 } 1967 break; 1968 } 1969 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1970 1971 /* fall through */ 1972 1973 case HCI_INIT_CUSTOM_INIT: 1974 case HCI_INIT_CUSTOM_PRE_INIT: 1975 // Custom initialization 1976 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1977 hci_reserve_packet_buffer(); 1978 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1979 bool send_cmd = false; 1980 switch (hci_stack->chipset_result){ 1981 case BTSTACK_CHIPSET_VALID_COMMAND: 1982 send_cmd = true; 1983 switch (hci_stack->substate){ 1984 case HCI_INIT_CUSTOM_INIT: 1985 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1986 break; 1987 case HCI_INIT_CUSTOM_PRE_INIT: 1988 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1989 break; 1990 default: 1991 btstack_assert(false); 1992 break; 1993 } 1994 break; 1995 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1996 send_cmd = true; 1997 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1998 log_info("CSR Warm Boot"); 1999 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 2000 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2001 btstack_run_loop_add_timer(&hci_stack->timeout); 2002 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2003 && hci_stack->config 2004 && hci_stack->chipset 2005 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2006 && hci_stack->hci_transport->set_baudrate 2007 && hci_transport_uart_get_main_baud_rate()){ 2008 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2009 } else { 2010 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2011 } 2012 break; 2013 default: 2014 break; 2015 } 2016 2017 if (send_cmd){ 2018 hci_send_prepared_cmd_packet(); 2019 break; 2020 } else { 2021 hci_release_packet_buffer(); 2022 } 2023 log_info("Init script done"); 2024 2025 // Custom Pre-Init complete, start regular init with HCI Reset 2026 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2027 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2028 hci_send_cmd(&hci_reset); 2029 break; 2030 } 2031 2032 // Init script download on Broadcom chipsets causes: 2033 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2034 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2035 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2036 2037 // - baud rate to reset, restore UART baud rate if needed 2038 if (need_baud_change) { 2039 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2040 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2041 hci_stack->hci_transport->set_baudrate(baud_rate); 2042 } 2043 2044 uint16_t bcm_delay_ms = 300; 2045 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2046 // -> Work around: wait here. 2047 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2048 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2049 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2050 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2051 btstack_run_loop_add_timer(&hci_stack->timeout); 2052 break; 2053 } 2054 } 2055 #endif 2056 /* fall through */ 2057 2058 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2059 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2060 hci_send_cmd(&hci_read_local_supported_commands); 2061 break; 2062 case HCI_INIT_READ_BD_ADDR: 2063 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2064 hci_send_cmd(&hci_read_bd_addr); 2065 break; 2066 case HCI_INIT_READ_BUFFER_SIZE: 2067 // only read buffer size if supported 2068 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2069 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2070 hci_send_cmd(&hci_read_buffer_size); 2071 break; 2072 } 2073 2074 /* fall through */ 2075 2076 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2077 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2078 hci_send_cmd(&hci_read_local_supported_features); 2079 break; 2080 2081 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2082 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2083 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2084 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2085 break; 2086 case HCI_INIT_HOST_BUFFER_SIZE: 2087 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2088 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2089 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2090 break; 2091 #endif 2092 2093 case HCI_INIT_SET_EVENT_MASK: 2094 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2095 if (hci_le_supported()){ 2096 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2097 } else { 2098 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2099 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2100 } 2101 break; 2102 2103 case HCI_INIT_SET_EVENT_MASK_2: 2104 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2105 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2106 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2107 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2108 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2109 // Encryption Change Event v2 - bit 25 2110 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2111 break; 2112 } 2113 2114 #ifdef ENABLE_CLASSIC 2115 /* fall through */ 2116 2117 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2118 if (hci_classic_supported() && gap_ssp_supported()){ 2119 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2120 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2121 break; 2122 } 2123 2124 /* fall through */ 2125 2126 case HCI_INIT_WRITE_INQUIRY_MODE: 2127 if (hci_classic_supported()){ 2128 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2129 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2130 break; 2131 } 2132 2133 /* fall through */ 2134 2135 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2136 // skip write secure connections host support if not supported or disabled 2137 if (hci_classic_supported() && hci_stack->secure_connections_enable 2138 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2139 hci_stack->secure_connections_active = true; 2140 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2141 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2142 break; 2143 } 2144 2145 /* fall through */ 2146 2147 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2148 // skip set min encryption key size 2149 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2150 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2151 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2152 break; 2153 } 2154 2155 #ifdef ENABLE_SCO_OVER_HCI 2156 /* fall through */ 2157 2158 // only sent if ENABLE_SCO_OVER_HCI is defined 2159 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2160 // skip write synchronous flow control if not supported 2161 if (hci_classic_supported() 2162 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2163 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2164 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2165 break; 2166 } 2167 /* fall through */ 2168 2169 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2170 // skip write default erroneous data reporting if not supported 2171 if (hci_classic_supported() 2172 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2173 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2174 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2175 break; 2176 } 2177 #endif 2178 2179 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2180 /* fall through */ 2181 2182 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2183 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2184 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2185 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2186 #ifdef ENABLE_SCO_OVER_HCI 2187 log_info("BCM: Route SCO data via HCI transport"); 2188 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2189 #endif 2190 #ifdef ENABLE_SCO_OVER_PCM 2191 log_info("BCM: Route SCO data via PCM interface"); 2192 #ifdef ENABLE_BCM_PCM_WBS 2193 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2194 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2195 #else 2196 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2197 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2198 #endif 2199 #endif 2200 break; 2201 } 2202 #endif 2203 2204 #ifdef ENABLE_SCO_OVER_PCM 2205 /* fall through */ 2206 2207 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2208 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2209 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2210 log_info("BCM: Config PCM interface for I2S"); 2211 #ifdef ENABLE_BCM_PCM_WBS 2212 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2213 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2214 #else 2215 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2216 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2217 #endif 2218 break; 2219 } 2220 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2221 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2222 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2223 log_info("BCM: Config PCM Data format"); 2224 // msb first, fill bits 0, left justified 2225 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2226 break; 2227 } 2228 #ifdef HAVE_BCM_PCM2 2229 case HCI_INIT_BCM_PCM2_SETUP: 2230 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2231 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2232 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2233 uint32_t pcm_clock_freq; 2234 uint8_t ch_0_period; 2235 #ifdef ENABLE_BCM_PCM_WBS 2236 // 512 kHz, resample 8 kHz to 16 khz 2237 pcm_clock_freq = 512000; 2238 ch_0_period = 1; 2239 #else 2240 // 256 khz, 8 khz output 2241 pcm_clock_freq = 256000; 2242 ch_0_period = 0; 2243 #endif 2244 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2245 hci_send_cmd(&hci_bcm_pcm2_setup, 2246 0x00, // Action = Write 2247 0x00, // Test_Options = None 2248 op_mode, // Op_Mode 2249 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2250 pcm_clock_freq, // PCM_Clock_Freq 2251 0x01, // Sync_Signal_Width 2252 0x0F, // Slot_Width 2253 0x01, // NumberOfSlots 2254 0x00, // Bank_0_Fill_Mode = 0s 2255 0x00, // Bank_0_Number_of_Fill_Bits 2256 0x00, // Bank_0_Programmable_Fill_Data 2257 0x00, // Bank_1_Fill_Mode = 0s 2258 0x00, // Bank_1_Number_of_Fill_Bits 2259 0x00, // Bank_1_Programmable_Fill_Data 2260 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2261 0x00, // Ch_0_Slot_Number 2262 0x01, // Ch_1_Slot_Number 2263 0x02, // Ch_2_Slot_Number 2264 0x03, // Ch_3_Slot_Number 2265 0x04, // Ch_4_Slot_Number 2266 ch_0_period, // Ch_0_Period 2267 0x00, // Ch_1_Period 2268 0x00 // Ch_2_Period 2269 ); 2270 break; 2271 } 2272 #endif 2273 #endif /* ENABLE_SCO_OVER_PCM */ 2274 #endif /* ENABLE_CLASSIC */ 2275 2276 #ifdef ENABLE_BLE 2277 /* fall through */ 2278 2279 // LE INIT 2280 case HCI_INIT_LE_READ_BUFFER_SIZE: 2281 if (hci_le_supported()){ 2282 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2283 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2284 hci_send_cmd(&hci_le_read_buffer_size_v2); 2285 } else { 2286 hci_send_cmd(&hci_le_read_buffer_size); 2287 } 2288 break; 2289 } 2290 2291 /* fall through */ 2292 2293 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2294 // skip write le host if not supported (e.g. on LE only EM9301) 2295 if (hci_le_supported() 2296 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2297 // LE Supported Host = 1, Simultaneous Host = 0 2298 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2299 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2300 break; 2301 } 2302 2303 /* fall through */ 2304 2305 case HCI_INIT_LE_SET_EVENT_MASK: 2306 if (hci_le_supported()){ 2307 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2308 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2309 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2310 #else 2311 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2312 #endif 2313 break; 2314 } 2315 #endif 2316 2317 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2318 /* fall through */ 2319 2320 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2321 if (hci_le_supported() 2322 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2323 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2324 hci_send_cmd(&hci_le_read_maximum_data_length); 2325 break; 2326 } 2327 2328 /* fall through */ 2329 2330 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2331 if (hci_le_supported() 2332 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2333 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2334 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2335 break; 2336 } 2337 #endif 2338 2339 #ifdef ENABLE_LE_CENTRAL 2340 /* fall through */ 2341 2342 case HCI_INIT_READ_WHITE_LIST_SIZE: 2343 if (hci_le_supported()){ 2344 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2345 hci_send_cmd(&hci_le_read_white_list_size); 2346 break; 2347 } 2348 2349 #endif 2350 2351 #ifdef ENABLE_LE_PERIPHERAL 2352 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2353 /* fall through */ 2354 2355 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2356 if (hci_le_extended_advertising_supported()){ 2357 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2358 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2359 break; 2360 } 2361 #endif 2362 #endif 2363 /* fall through */ 2364 2365 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2366 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2367 if (hci_le_supported()) { 2368 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2369 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2370 break; 2371 } 2372 #endif 2373 2374 /* fall through */ 2375 2376 case HCI_INIT_DONE: 2377 hci_stack->substate = HCI_INIT_DONE; 2378 // main init sequence complete 2379 #ifdef ENABLE_CLASSIC 2380 // check if initial Classic GAP Tasks are completed 2381 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2382 hci_run_gap_tasks_classic(); 2383 break; 2384 } 2385 #endif 2386 #ifdef ENABLE_BLE 2387 #ifdef ENABLE_LE_CENTRAL 2388 // check if initial LE GAP Tasks are completed 2389 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2390 hci_run_general_gap_le(); 2391 break; 2392 } 2393 #endif 2394 #endif 2395 hci_init_done(); 2396 break; 2397 2398 default: 2399 return; 2400 } 2401 } 2402 2403 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2404 bool command_completed = false; 2405 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2406 uint16_t opcode = little_endian_read_16(packet,3); 2407 if (opcode == hci_stack->last_cmd_opcode){ 2408 command_completed = true; 2409 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2410 } else { 2411 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2412 } 2413 } 2414 2415 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2416 uint8_t status = packet[2]; 2417 uint16_t opcode = little_endian_read_16(packet,4); 2418 if (opcode == hci_stack->last_cmd_opcode){ 2419 if (status){ 2420 command_completed = true; 2421 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2422 } else { 2423 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2424 } 2425 } else { 2426 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2427 } 2428 } 2429 #ifndef HAVE_HOST_CONTROLLER_API 2430 // Vendor == CSR 2431 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2432 // TODO: track actual command 2433 command_completed = true; 2434 } 2435 2436 // Vendor == Toshiba 2437 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2438 // TODO: track actual command 2439 command_completed = true; 2440 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2441 hci_stack->num_cmd_packets = 1; 2442 } 2443 #endif 2444 2445 return command_completed; 2446 } 2447 2448 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2449 2450 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2451 2452 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2453 2454 #ifndef HAVE_HOST_CONTROLLER_API 2455 2456 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2457 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2458 // 2459 // HCI Reset 2460 // Timeout 100 ms 2461 // HCI Reset 2462 // Command Complete Reset 2463 // HCI Read Local Version Information 2464 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2465 // hang... 2466 // 2467 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2468 if (!command_completed 2469 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2470 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2471 2472 uint16_t opcode = little_endian_read_16(packet,3); 2473 if (opcode == hci_reset.opcode){ 2474 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2475 return; 2476 } 2477 } 2478 2479 // CSR & H5 2480 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2481 if (!command_completed 2482 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2483 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2484 2485 uint16_t opcode = little_endian_read_16(packet,3); 2486 if (opcode == hci_reset.opcode){ 2487 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2488 return; 2489 } 2490 } 2491 2492 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2493 // fix: Correct substate and behave as command below 2494 if (command_completed){ 2495 switch (hci_stack->substate){ 2496 case HCI_INIT_SEND_RESET: 2497 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2498 break; 2499 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2500 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2501 break; 2502 default: 2503 break; 2504 } 2505 } 2506 2507 #endif 2508 2509 if (!command_completed) return; 2510 2511 bool need_baud_change = false; 2512 bool need_addr_change = false; 2513 2514 #ifndef HAVE_HOST_CONTROLLER_API 2515 need_baud_change = hci_stack->config 2516 && hci_stack->chipset 2517 && hci_stack->chipset->set_baudrate_command 2518 && hci_stack->hci_transport->set_baudrate 2519 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2520 2521 need_addr_change = hci_stack->custom_bd_addr_set 2522 && hci_stack->chipset 2523 && hci_stack->chipset->set_bd_addr_command; 2524 #endif 2525 2526 switch(hci_stack->substate){ 2527 2528 #ifndef HAVE_HOST_CONTROLLER_API 2529 case HCI_INIT_SEND_RESET: 2530 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2531 // fix: just correct substate and behave as command below 2532 2533 /* fall through */ 2534 #endif 2535 2536 case HCI_INIT_W4_SEND_RESET: 2537 btstack_run_loop_remove_timer(&hci_stack->timeout); 2538 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2539 return; 2540 2541 #ifndef HAVE_HOST_CONTROLLER_API 2542 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2543 // for STLC2500D, baud rate change already happened. 2544 // for others, baud rate gets changed now 2545 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2546 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2547 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2548 hci_stack->hci_transport->set_baudrate(baud_rate); 2549 } 2550 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2551 return; 2552 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2553 btstack_run_loop_remove_timer(&hci_stack->timeout); 2554 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2555 return; 2556 case HCI_INIT_W4_CUSTOM_INIT: 2557 // repeat custom init 2558 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2559 return; 2560 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2561 // repeat custom init 2562 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2563 return; 2564 #endif 2565 2566 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2567 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2568 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2569 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2570 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2571 return; 2572 } 2573 if (need_addr_change){ 2574 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2575 return; 2576 } 2577 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2578 return; 2579 #ifndef HAVE_HOST_CONTROLLER_API 2580 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2581 if (need_baud_change){ 2582 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2583 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2584 hci_stack->hci_transport->set_baudrate(baud_rate); 2585 } 2586 if (need_addr_change){ 2587 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2588 return; 2589 } 2590 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2591 return; 2592 case HCI_INIT_W4_SET_BD_ADDR: 2593 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2594 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2595 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2596 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2597 return; 2598 } 2599 // skipping st warm boot 2600 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2601 return; 2602 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2603 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2604 return; 2605 #endif 2606 2607 case HCI_INIT_DONE: 2608 // set state if we came here by fall through 2609 hci_stack->substate = HCI_INIT_DONE; 2610 return; 2611 2612 default: 2613 break; 2614 } 2615 hci_initializing_next_state(); 2616 } 2617 2618 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2619 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2620 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2621 // check if we have been aware of the HCI connection 2622 switch (conn->state){ 2623 case SENT_CREATE_CONNECTION: 2624 case RECEIVED_CONNECTION_REQUEST: 2625 case ACCEPTED_CONNECTION_REQUEST: 2626 break; 2627 default: 2628 return; 2629 } 2630 2631 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2632 bd_addr_t bd_address; 2633 (void)memcpy(&bd_address, conn->address, 6); 2634 2635 #ifdef ENABLE_CLASSIC 2636 // cache needed data 2637 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2638 #endif 2639 2640 // connection failed, remove entry 2641 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2642 btstack_memory_hci_connection_free( conn ); 2643 2644 #ifdef ENABLE_CLASSIC 2645 // notify client if dedicated bonding 2646 if (notify_dedicated_bonding_failed){ 2647 log_info("hci notify_dedicated_bonding_failed"); 2648 hci_emit_dedicated_bonding_result(bd_address, status); 2649 } 2650 2651 // if authentication error, also delete link key 2652 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2653 gap_drop_link_key_for_bd_addr(bd_address); 2654 } 2655 #else 2656 UNUSED(status); 2657 #endif 2658 } 2659 2660 #ifdef ENABLE_CLASSIC 2661 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2662 // SSP Controller 2663 if (features[6] & (1 << 3)){ 2664 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2665 } 2666 // eSCO 2667 if (features[3] & (1<<7)){ 2668 conn->remote_supported_features[0] |= 1; 2669 } 2670 // Extended features 2671 if (features[7] & (1<<7)){ 2672 conn->remote_supported_features[0] |= 2; 2673 } 2674 // SCO packet types 2675 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2676 } 2677 2678 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2679 // SSP Host 2680 if (features[0] & (1 << 0)){ 2681 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2682 } 2683 // SC Host 2684 if (features[0] & (1 << 3)){ 2685 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2686 } 2687 } 2688 2689 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2690 // SC Controller 2691 if (features[1] & (1 << 0)){ 2692 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2693 } 2694 } 2695 2696 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2697 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2698 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2699 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2700 if (conn->bonding_flags & BONDING_DEDICATED){ 2701 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2702 } 2703 } 2704 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2705 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2706 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2707 } 2708 2709 #endif 2710 2711 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2712 // handle BT initialization 2713 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2714 hci_initializing_event_handler(packet, size); 2715 } 2716 2717 // help with BT sleep 2718 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2719 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2720 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2721 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2722 hci_initializing_next_state(); 2723 } 2724 } 2725 2726 #ifdef ENABLE_CLASSIC 2727 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2728 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2729 conn->requested_security_level = LEVEL_0; 2730 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2731 hci_emit_security_level(conn->con_handle, security_level); 2732 2733 // dedicated bonding 2734 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2735 conn->bonding_flags &= ~BONDING_DEDICATED; 2736 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2737 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2738 // emit dedicated bonding complete, don't disconnect 2739 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2740 #else 2741 // request disconnect, event is emitted after disconnect 2742 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2743 #endif 2744 } 2745 } 2746 2747 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2748 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2749 conn->encryption_key_size = encryption_key_size; 2750 2751 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2752 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2753 hci_handle_mutual_authentication_completed(conn); 2754 } else { 2755 // otherwise trigger remote feature request and send authentication request 2756 hci_trigger_remote_features_for_connection(conn); 2757 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2758 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2759 } 2760 } 2761 } 2762 #endif 2763 2764 static void hci_store_local_supported_commands(const uint8_t * packet){ 2765 // create mapping table 2766 #define X(name, offset, bit) { offset, bit }, 2767 static struct { 2768 uint8_t byte_offset; 2769 uint8_t bit_position; 2770 } supported_hci_commands_map [] = { 2771 SUPPORTED_HCI_COMMANDS 2772 }; 2773 #undef X 2774 2775 // create names for debug purposes 2776 #ifdef ENABLE_LOG_DEBUG 2777 #define X(name, offset, bit) #name, 2778 static const char * command_names[] = { 2779 SUPPORTED_HCI_COMMANDS 2780 }; 2781 #undef X 2782 #endif 2783 2784 hci_stack->local_supported_commands = 0; 2785 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2786 uint16_t i; 2787 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2788 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2789 #ifdef ENABLE_LOG_DEBUG 2790 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); 2791 #else 2792 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2793 #endif 2794 hci_stack->local_supported_commands |= (1LU << i); 2795 } 2796 } 2797 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2798 } 2799 2800 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2801 UNUSED(size); 2802 2803 uint8_t status = 0; 2804 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2805 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2806 } 2807 uint16_t manufacturer; 2808 #ifdef ENABLE_CLASSIC 2809 hci_connection_t * conn; 2810 #endif 2811 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2812 hci_con_handle_t handle; 2813 #endif 2814 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2815 le_audio_cig_t * cig; 2816 #endif 2817 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2818 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2819 #endif 2820 2821 // get num cmd packets - limit to 1 to reduce complexity 2822 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2823 2824 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2825 switch (opcode){ 2826 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2827 if (status) break; 2828 // terminate, name 248 chars 2829 packet[6+248] = 0; 2830 log_info("local name: %s", &packet[6]); 2831 break; 2832 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2833 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2834 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2835 uint16_t acl_len = little_endian_read_16(packet, 6); 2836 uint16_t sco_len = packet[8]; 2837 2838 // determine usable ACL/SCO payload size 2839 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2840 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2841 2842 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2843 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2844 2845 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2846 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2847 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2848 } 2849 break; 2850 case HCI_OPCODE_HCI_READ_RSSI: 2851 if (status == ERROR_CODE_SUCCESS){ 2852 uint8_t event[5]; 2853 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2854 event[1] = 3; 2855 (void)memcpy(&event[2], &packet[6], 3); 2856 hci_emit_event(event, sizeof(event), 1); 2857 } 2858 break; 2859 #ifdef ENABLE_BLE 2860 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2861 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2862 hci_stack->le_iso_packets_total_num = packet[11]; 2863 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2864 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2865 2866 /* fall through */ 2867 2868 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2869 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2870 hci_stack->le_acl_packets_total_num = packet[8]; 2871 // determine usable ACL payload size 2872 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2873 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2874 } 2875 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); 2876 break; 2877 #endif 2878 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2879 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2880 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2881 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2882 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); 2883 break; 2884 #endif 2885 #ifdef ENABLE_LE_CENTRAL 2886 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2887 hci_stack->le_whitelist_capacity = packet[6]; 2888 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2889 break; 2890 #endif 2891 #ifdef ENABLE_LE_PERIPHERAL 2892 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2893 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2894 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2895 break; 2896 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2897 if (hci_stack->le_advertising_set_in_current_command != 0) { 2898 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2899 hci_stack->le_advertising_set_in_current_command = 0; 2900 if (advertising_set == NULL) break; 2901 uint8_t adv_status = packet[6]; 2902 uint8_t tx_power = packet[7]; 2903 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 }; 2904 if (adv_status == 0){ 2905 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2906 } 2907 hci_emit_event(event, sizeof(event), 1); 2908 } 2909 break; 2910 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2911 if (hci_stack->le_advertising_set_in_current_command != 0) { 2912 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2913 hci_stack->le_advertising_set_in_current_command = 0; 2914 if (advertising_set == NULL) break; 2915 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2916 if (status == 0){ 2917 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2918 } 2919 hci_emit_event(event, sizeof(event), 1); 2920 } 2921 break; 2922 #endif 2923 #endif 2924 case HCI_OPCODE_HCI_READ_BD_ADDR: 2925 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2926 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2927 #ifdef ENABLE_CLASSIC 2928 if (hci_stack->link_key_db){ 2929 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2930 } 2931 #endif 2932 break; 2933 #ifdef ENABLE_CLASSIC 2934 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2935 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2936 break; 2937 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2938 if (status == ERROR_CODE_SUCCESS) { 2939 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2940 } else { 2941 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2942 } 2943 break; 2944 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2945 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2946 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2947 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2948 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2949 hci_emit_event(event, sizeof(event), 1); 2950 } 2951 break; 2952 #endif 2953 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2954 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2955 2956 #ifdef ENABLE_CLASSIC 2957 // determine usable ACL packet types based on host buffer size and supported features 2958 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]); 2959 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2960 // determine usable SCO packet types based on supported features 2961 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2962 &hci_stack->local_supported_features[0]); 2963 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2964 #endif 2965 // Classic/LE 2966 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2967 break; 2968 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2969 manufacturer = little_endian_read_16(packet, 10); 2970 // map Cypress & Infineon to Broadcom 2971 switch (manufacturer){ 2972 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2973 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2974 log_info("Treat Cypress/Infineon as Broadcom"); 2975 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2976 little_endian_store_16(packet, 10, manufacturer); 2977 break; 2978 default: 2979 break; 2980 } 2981 hci_stack->manufacturer = manufacturer; 2982 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2983 break; 2984 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2985 hci_store_local_supported_commands(packet); 2986 break; 2987 #ifdef ENABLE_CLASSIC 2988 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2989 if (status) return; 2990 hci_stack->synchronous_flow_control_enabled = 1; 2991 break; 2992 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2993 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2994 conn = hci_connection_for_handle(handle); 2995 if (conn != NULL) { 2996 uint8_t key_size = 0; 2997 if (status == 0){ 2998 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2999 log_info("Handle %04x key Size: %u", handle, key_size); 3000 } else { 3001 key_size = 1; 3002 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3003 } 3004 hci_handle_read_encryption_key_size_complete(conn, key_size); 3005 } 3006 break; 3007 // assert pairing complete event is emitted. 3008 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3009 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3010 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3011 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3012 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3013 // lookup connection by gap pairing addr 3014 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3015 if (conn == NULL) break; 3016 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3017 break; 3018 3019 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3020 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3021 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3022 uint8_t event[67]; 3023 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3024 event[1] = 65; 3025 (void)memset(&event[2], 0, 65); 3026 if (status == ERROR_CODE_SUCCESS){ 3027 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3028 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3029 event[2] = 3; 3030 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3031 } else { 3032 event[2] = 1; 3033 } 3034 } 3035 hci_emit_event(event, sizeof(event), 0); 3036 break; 3037 } 3038 3039 // note: only needed if user does not provide OOB data 3040 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3041 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3042 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3043 if (conn == NULL) break; 3044 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3045 break; 3046 #endif 3047 #endif 3048 #ifdef ENABLE_BLE 3049 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3050 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3051 // lookup CIG 3052 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3053 if (cig != NULL){ 3054 uint8_t i = 0; 3055 if (status == ERROR_CODE_SUCCESS){ 3056 // assign CIS handles to pre-allocated CIS 3057 btstack_linked_list_iterator_t it; 3058 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3059 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3060 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3061 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3062 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3063 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3064 iso_stream->cis_handle = cis_handle; 3065 cig->cis_con_handles[i] = cis_handle; 3066 i++; 3067 } 3068 } 3069 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3070 hci_emit_cig_created(cig, status); 3071 } else { 3072 hci_emit_cig_created(cig, status); 3073 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3074 } 3075 } 3076 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3077 break; 3078 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3079 if (status != ERROR_CODE_SUCCESS){ 3080 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3081 } 3082 break; 3083 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3084 if (status != ERROR_CODE_SUCCESS){ 3085 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3086 } 3087 break; 3088 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3089 // lookup BIG by state 3090 btstack_linked_list_iterator_t it; 3091 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3092 while (btstack_linked_list_iterator_has_next(&it)) { 3093 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3094 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3095 if (status == ERROR_CODE_SUCCESS){ 3096 big->state_vars.next_bis++; 3097 if (big->state_vars.next_bis == big->num_bis){ 3098 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3099 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3100 } else { 3101 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3102 } 3103 } else { 3104 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3105 big->state_vars.status = status; 3106 } 3107 return; 3108 } 3109 } 3110 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3111 while (btstack_linked_list_iterator_has_next(&it)) { 3112 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3113 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3114 if (status == ERROR_CODE_SUCCESS){ 3115 big_sync->state_vars.next_bis++; 3116 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3117 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3118 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3119 } else { 3120 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3121 } 3122 } else { 3123 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3124 big_sync->state_vars.status = status; 3125 } 3126 return; 3127 } 3128 } 3129 // Lookup CIS via active group operation 3130 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3131 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3132 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3133 3134 // lookup CIS by state 3135 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3136 while (btstack_linked_list_iterator_has_next(&it)){ 3137 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3138 handle = iso_stream->cis_handle; 3139 bool emit_cis_created = false; 3140 switch (iso_stream->state){ 3141 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3142 if (status != ERROR_CODE_SUCCESS){ 3143 emit_cis_created = true; 3144 break; 3145 } 3146 if (iso_stream->max_sdu_c_to_p > 0){ 3147 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3148 } else { 3149 emit_cis_created = true; 3150 } 3151 break; 3152 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3153 emit_cis_created = true; 3154 break; 3155 default: 3156 break; 3157 } 3158 if (emit_cis_created){ 3159 hci_cis_handle_created(iso_stream, status); 3160 } 3161 } 3162 } else { 3163 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3164 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3165 if (cig != NULL) { 3166 // emit cis created if all ISO Paths have been created 3167 // assume we are central 3168 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3169 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3170 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3171 // if outgoing has been setup, or incoming was setup but outgoing not required 3172 if ((cis_direction == 1) || (outgoing_needed == false)){ 3173 // lookup iso stream by cig/cis 3174 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3175 while (btstack_linked_list_iterator_has_next(&it)) { 3176 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3177 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3178 hci_cis_handle_created(iso_stream, status); 3179 } 3180 } 3181 } 3182 // next state 3183 cig->state_vars.next_cis++; 3184 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3185 } 3186 } 3187 } 3188 break; 3189 } 3190 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3191 // lookup BIG by state 3192 btstack_linked_list_iterator_t it; 3193 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3194 while (btstack_linked_list_iterator_has_next(&it)) { 3195 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3196 uint8_t big_handle = big_sync->big_handle; 3197 switch (big_sync->state){ 3198 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3199 btstack_linked_list_iterator_remove(&it); 3200 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3201 return; 3202 default: 3203 btstack_linked_list_iterator_remove(&it); 3204 hci_emit_big_sync_stopped(big_handle); 3205 return; 3206 } 3207 } 3208 break; 3209 } 3210 #endif 3211 #endif 3212 default: 3213 break; 3214 } 3215 } 3216 3217 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3218 UNUSED(size); 3219 3220 // get num cmd packets - limit to 1 to reduce complexity 3221 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3222 3223 // get opcode and command status 3224 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3225 3226 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3227 uint8_t status = hci_event_command_status_get_status(packet); 3228 #endif 3229 3230 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3231 bd_addr_type_t addr_type; 3232 bd_addr_t addr; 3233 #endif 3234 3235 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3236 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3237 #endif 3238 3239 switch (opcode){ 3240 #ifdef ENABLE_CLASSIC 3241 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3242 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3243 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3244 #endif 3245 #ifdef ENABLE_LE_CENTRAL 3246 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3247 #endif 3248 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3249 addr_type = hci_stack->outgoing_addr_type; 3250 memcpy(addr, hci_stack->outgoing_addr, 6); 3251 3252 // reset outgoing address info 3253 memset(hci_stack->outgoing_addr, 0, 6); 3254 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3255 3256 // on error 3257 if (status != ERROR_CODE_SUCCESS){ 3258 #ifdef ENABLE_LE_CENTRAL 3259 if (hci_is_le_connection_type(addr_type)){ 3260 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3261 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3262 } 3263 #endif 3264 // error => outgoing connection failed 3265 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3266 if (conn != NULL){ 3267 hci_handle_connection_failed(conn, status); 3268 } 3269 } 3270 break; 3271 #endif 3272 #ifdef ENABLE_CLASSIC 3273 case HCI_OPCODE_HCI_INQUIRY: 3274 if (status == ERROR_CODE_SUCCESS) { 3275 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3276 } else { 3277 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3278 } 3279 break; 3280 #endif 3281 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3282 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3283 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3284 if (status == ERROR_CODE_SUCCESS){ 3285 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3286 } else { 3287 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3288 } 3289 break; 3290 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3291 default: 3292 break; 3293 } 3294 } 3295 3296 #ifdef ENABLE_BLE 3297 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3298 gap_event[0] = HCI_EVENT_META_GAP; 3299 gap_event[1] = 36 - 2; 3300 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3301 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3302 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3303 memcpy(&gap_event[3], &hci_event[3], 11); 3304 memset(&gap_event[14], 0, 12); 3305 memcpy(&gap_event[26], &hci_event[14], 7); 3306 memset(&gap_event[33], 0xff, 3); 3307 break; 3308 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3309 memcpy(&gap_event[3], &hci_event[3], 30); 3310 memset(&gap_event[33], 0xff, 3); 3311 break; 3312 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3313 memcpy(&gap_event[3], &hci_event[3], 33); 3314 break; 3315 default: 3316 btstack_unreachable(); 3317 break; 3318 } 3319 } 3320 3321 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3322 bd_addr_t addr; 3323 bd_addr_type_t addr_type; 3324 hci_connection_t * conn; 3325 3326 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3327 uint8_t gap_event[36]; 3328 hci_create_gap_connection_complete_event(hci_event, gap_event); 3329 3330 // read fields 3331 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3332 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3333 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3334 3335 // Connection management 3336 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3337 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3338 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3339 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3340 3341 #ifdef ENABLE_LE_CENTRAL 3342 // handle error: error is reported only to the initiator -> outgoing connection 3343 if (status){ 3344 3345 // handle cancelled outgoing connection 3346 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3347 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3348 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3349 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3350 // reset state 3351 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3352 // get outgoing connection conn struct for direct connect 3353 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3354 conn = gap_get_outgoing_le_connection(); 3355 conn->state = SEND_CREATE_CONNECTION; 3356 } 3357 } 3358 3359 // free connection if cancelled by user (request == IDLE) 3360 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 3361 // remove entry 3362 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3363 btstack_memory_hci_connection_free( conn ); 3364 } 3365 return; 3366 } 3367 #endif 3368 3369 // on success, both hosts receive connection complete event 3370 if (role == HCI_ROLE_MASTER){ 3371 #ifdef ENABLE_LE_CENTRAL 3372 // if we're master, it was an outgoing connection 3373 // note: no hci_connection_t object exists yet for connect with whitelist 3374 3375 // if a identity addresses was used without enhanced connection complete event, 3376 // the connection complete event contains the current random address of the peer device. 3377 // This random address is needed in the case of a re-pairing 3378 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3379 conn = gap_get_outgoing_le_connection(); 3380 // if outgoing connection object is available, check if identity address was used. 3381 // if yes, track resolved random address and provide rpa 3382 // note: we don't update hci le subevent connection complete 3383 if (conn != NULL){ 3384 if (hci_is_le_identity_address_type(conn->address_type)){ 3385 memcpy(&gap_event[20], &gap_event[8], 6); 3386 gap_event[7] = conn->address_type; 3387 reverse_bd_addr(conn->address, &gap_event[8]); 3388 } 3389 } 3390 } 3391 3392 // we're done with it 3393 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3394 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3395 #endif 3396 } else { 3397 #ifdef ENABLE_LE_PERIPHERAL 3398 // if we're slave, it was an incoming connection, advertisements have stopped 3399 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3400 #endif 3401 } 3402 3403 // LE connections are auto-accepted, so just create a connection if there isn't one already 3404 if (!conn){ 3405 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3406 } 3407 3408 // no memory, sorry. 3409 if (!conn){ 3410 return; 3411 } 3412 3413 conn->state = OPEN; 3414 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3415 conn->le_connection_interval = conn_interval; 3416 3417 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3418 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3419 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3420 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3421 } 3422 #endif 3423 3424 #ifdef ENABLE_LE_PERIPHERAL 3425 if (role == HCI_ROLE_SLAVE){ 3426 hci_update_advertisements_enabled_for_current_roles(); 3427 } 3428 #endif 3429 3430 // init unenhanced att bearer mtu 3431 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3432 conn->att_connection.mtu_exchanged = false; 3433 3434 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3435 3436 // restart timer 3437 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3438 // btstack_run_loop_add_timer(&conn->timeout); 3439 3440 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3441 3442 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3443 hci_emit_event(gap_event, sizeof(gap_event), 1); 3444 3445 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3446 hci_emit_nr_connections_changed(); 3447 } 3448 #endif 3449 3450 #ifdef ENABLE_CLASSIC 3451 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){ 3452 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3453 // LEVEL_4 is tested by l2cap 3454 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3455 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3456 if (level >= LEVEL_3){ 3457 // MITM not possible without keyboard or display 3458 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3459 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3460 3461 // MITM possible if one side has keyboard and the other has keyboard or display 3462 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3463 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3464 3465 // MITM not possible if one side has only display and other side has no keyboard 3466 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3467 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3468 } 3469 // LEVEL 2 requires SSP, which is a given 3470 return true; 3471 } 3472 3473 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3474 // get requested security level 3475 gap_security_level_t requested_security_level = conn->requested_security_level; 3476 if (hci_stack->gap_secure_connections_only_mode){ 3477 requested_security_level = LEVEL_4; 3478 } 3479 3480 // assess security: LEVEL 4 requires SC 3481 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3482 if ((requested_security_level == LEVEL_4) && 3483 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3484 !hci_remote_sc_enabled(conn)){ 3485 log_info("Level 4 required, but SC not supported -> abort"); 3486 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3487 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3488 return; 3489 } 3490 3491 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3492 // - GAP/MOD/NBON/BV-02-C 3493 // - GAP/DM/NBON/BV-01-C 3494 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3495 switch (conn->io_cap_response_auth_req){ 3496 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3497 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3498 if (hci_stack->bondable == false){ 3499 log_info("Dedicated vs. non-bondable -> abort"); 3500 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3501 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3502 return; 3503 } 3504 default: 3505 break; 3506 } 3507 } 3508 3509 // assess security based on io capabilities 3510 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3511 // responder: fully validate io caps of both sides as well as OOB data 3512 bool security_possible = false; 3513 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3514 3515 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3516 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3517 // so we merge the OOB data availability 3518 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3519 if (conn->classic_oob_c_192 != NULL){ 3520 have_oob_data |= 1; 3521 } 3522 if (conn->classic_oob_c_256 != NULL){ 3523 have_oob_data |= 2; 3524 } 3525 // for up to Level 3, either P-192 as well as P-256 will do 3526 // 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 3527 // if remote does not SC, we should not receive P-256 data either 3528 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3529 security_possible = true; 3530 } 3531 // for Level 4, P-256 is needed 3532 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3533 security_possible = true; 3534 } 3535 #endif 3536 3537 if (security_possible == false){ 3538 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3539 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3540 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3541 return; 3542 } 3543 } else { 3544 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3545 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3546 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3547 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3548 log_info("Level 3+ required, but no input/output -> abort"); 3549 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3550 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3551 return; 3552 } 3553 #endif 3554 #endif 3555 } 3556 3557 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3558 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3559 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3560 } else { 3561 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3562 } 3563 #endif 3564 } 3565 3566 #endif 3567 3568 static void event_handler(uint8_t *packet, uint16_t size){ 3569 3570 uint16_t event_length = packet[1]; 3571 3572 // assert packet is complete 3573 if (size != (event_length + 2u)){ 3574 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3575 return; 3576 } 3577 3578 hci_con_handle_t handle; 3579 hci_connection_t * conn; 3580 int i; 3581 3582 #ifdef ENABLE_CLASSIC 3583 hci_link_type_t link_type; 3584 bd_addr_t addr; 3585 bd_addr_type_t addr_type; 3586 #endif 3587 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3588 hci_iso_stream_t * iso_stream; 3589 le_audio_big_t * big; 3590 le_audio_big_sync_t * big_sync; 3591 #endif 3592 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3593 btstack_linked_list_iterator_t it; 3594 #endif 3595 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3596 uint8_t advertising_handle; 3597 #endif 3598 3599 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3600 3601 switch (hci_event_packet_get_type(packet)) { 3602 3603 case HCI_EVENT_COMMAND_COMPLETE: 3604 handle_command_complete_event(packet, size); 3605 break; 3606 3607 case HCI_EVENT_COMMAND_STATUS: 3608 handle_command_status_event(packet, size); 3609 break; 3610 3611 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3612 if (size < 3) return; 3613 uint16_t num_handles = packet[2]; 3614 if (size != (3u + num_handles * 4u)) return; 3615 #ifdef ENABLE_CLASSIC 3616 bool notify_sco = false; 3617 #endif 3618 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3619 bool notify_iso = false; 3620 #endif 3621 uint16_t offset = 3; 3622 for (i=0; i<num_handles;i++){ 3623 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3624 offset += 2u; 3625 uint16_t num_packets = little_endian_read_16(packet, offset); 3626 offset += 2u; 3627 3628 conn = hci_connection_for_handle(handle); 3629 if (conn != NULL) { 3630 3631 if (conn->num_packets_sent >= num_packets) { 3632 conn->num_packets_sent -= num_packets; 3633 } else { 3634 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3635 conn->num_packets_sent = 0; 3636 } 3637 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3638 #ifdef ENABLE_CLASSIC 3639 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3640 notify_sco = true; 3641 } 3642 #endif 3643 } 3644 3645 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3646 hci_controller_dump_packets(); 3647 #endif 3648 3649 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3650 if (conn == NULL){ 3651 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3652 if (iso_stream != NULL){ 3653 if (iso_stream->num_packets_sent >= num_packets) { 3654 iso_stream->num_packets_sent -= num_packets; 3655 } else { 3656 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3657 iso_stream->num_packets_sent = 0; 3658 } 3659 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3660 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3661 if (big != NULL){ 3662 big->num_completed_timestamp_current_valid = true; 3663 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3664 } 3665 } 3666 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3667 num_packets, handle, iso_stream->num_packets_sent); 3668 notify_iso = true; 3669 } 3670 } 3671 #endif 3672 } 3673 3674 #ifdef ENABLE_CLASSIC 3675 if (notify_sco){ 3676 hci_notify_if_sco_can_send_now(); 3677 } 3678 #endif 3679 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3680 if (notify_iso){ 3681 hci_iso_notify_can_send_now(); 3682 } 3683 #endif 3684 break; 3685 } 3686 3687 #ifdef ENABLE_CLASSIC 3688 case HCI_EVENT_FLUSH_OCCURRED: 3689 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3690 handle = hci_event_flush_occurred_get_handle(packet); 3691 conn = hci_connection_for_handle(handle); 3692 if (conn) { 3693 log_info("Flush occurred, disconnect 0x%04x", handle); 3694 conn->state = SEND_DISCONNECT; 3695 } 3696 break; 3697 3698 case HCI_EVENT_INQUIRY_COMPLETE: 3699 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3700 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3701 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3702 hci_emit_event(event, sizeof(event), 1); 3703 } 3704 break; 3705 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3706 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3707 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3708 } 3709 break; 3710 case HCI_EVENT_CONNECTION_REQUEST: 3711 reverse_bd_addr(&packet[2], addr); 3712 link_type = (hci_link_type_t) packet[11]; 3713 3714 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3715 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3716 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3717 bd_addr_copy(hci_stack->decline_addr, addr); 3718 break; 3719 } 3720 3721 if (hci_stack->gap_classic_accept_callback != NULL){ 3722 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3723 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3724 bd_addr_copy(hci_stack->decline_addr, addr); 3725 break; 3726 } 3727 } 3728 3729 // TODO: eval COD 8-10 3730 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3731 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3732 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3733 if (!conn) { 3734 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3735 } 3736 if (!conn) { 3737 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3738 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3739 bd_addr_copy(hci_stack->decline_addr, addr); 3740 hci_run(); 3741 // avoid event to higher layer 3742 return; 3743 } 3744 conn->state = RECEIVED_CONNECTION_REQUEST; 3745 // store info about eSCO 3746 if (link_type == HCI_LINK_TYPE_ESCO){ 3747 conn->remote_supported_features[0] |= 1; 3748 } 3749 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3750 if (addr_type == BD_ADDR_TYPE_SCO){ 3751 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3752 // ACL exists unless fuzzing 3753 if (acl_conn != NULL) { 3754 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3755 } 3756 } 3757 hci_run(); 3758 break; 3759 3760 case HCI_EVENT_CONNECTION_COMPLETE: 3761 // Connection management 3762 reverse_bd_addr(&packet[5], addr); 3763 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3764 addr_type = BD_ADDR_TYPE_ACL; 3765 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3766 if (conn) { 3767 switch (conn->state){ 3768 // expected states 3769 case ACCEPTED_CONNECTION_REQUEST: 3770 case SENT_CREATE_CONNECTION: 3771 break; 3772 // unexpected state -> ignore 3773 default: 3774 // don't forward event to app 3775 return; 3776 } 3777 if (!packet[2]){ 3778 conn->state = OPEN; 3779 conn->con_handle = little_endian_read_16(packet, 3); 3780 3781 // trigger write supervision timeout if we're master 3782 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3783 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3784 } 3785 3786 // trigger write automatic flush timeout 3787 if (hci_stack->automatic_flush_timeout != 0){ 3788 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3789 } 3790 3791 // restart timer 3792 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3793 btstack_run_loop_add_timer(&conn->timeout); 3794 3795 // trigger remote features for dedicated bonding 3796 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3797 hci_trigger_remote_features_for_connection(conn); 3798 } 3799 3800 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3801 3802 hci_emit_nr_connections_changed(); 3803 } else { 3804 // connection failed 3805 hci_handle_connection_failed(conn, packet[2]); 3806 } 3807 } 3808 break; 3809 3810 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3811 reverse_bd_addr(&packet[5], addr); 3812 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3813 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3814 3815 // SCO exists unless fuzzer 3816 if (conn == NULL) break; 3817 3818 if (packet[2] != ERROR_CODE_SUCCESS){ 3819 // connection failed, remove entry 3820 hci_handle_connection_failed(conn, packet[2]); 3821 break; 3822 } 3823 3824 conn->state = OPEN; 3825 conn->con_handle = little_endian_read_16(packet, 3); 3826 3827 // update sco payload length for eSCO connections 3828 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3829 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3830 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3831 } 3832 3833 #ifdef ENABLE_SCO_OVER_HCI 3834 // update SCO 3835 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3836 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3837 } 3838 // trigger can send now 3839 if (hci_have_usb_transport()){ 3840 hci_stack->sco_can_send_now = true; 3841 } 3842 3843 // setup implict sco flow control 3844 conn->sco_tx_ready = 0; 3845 conn->sco_tx_active = 0; 3846 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3847 3848 #endif 3849 #ifdef HAVE_SCO_TRANSPORT 3850 // configure sco transport 3851 if (hci_stack->sco_transport != NULL){ 3852 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3853 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3854 } 3855 #endif 3856 break; 3857 3858 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3859 handle = little_endian_read_16(packet, 3); 3860 conn = hci_connection_for_handle(handle); 3861 if (!conn) break; 3862 if (!packet[2]){ 3863 const uint8_t * features = &packet[5]; 3864 hci_handle_remote_features_page_0(conn, features); 3865 3866 // read extended features if possible 3867 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3868 && ((conn->remote_supported_features[0] & 2) != 0)) { 3869 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3870 break; 3871 } 3872 } 3873 hci_handle_remote_features_received(conn); 3874 break; 3875 3876 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3877 handle = little_endian_read_16(packet, 3); 3878 conn = hci_connection_for_handle(handle); 3879 if (!conn) break; 3880 // status = ok, page = 1 3881 if (!packet[2]) { 3882 uint8_t page_number = packet[5]; 3883 uint8_t maximum_page_number = packet[6]; 3884 const uint8_t * features = &packet[7]; 3885 bool done = false; 3886 switch (page_number){ 3887 case 1: 3888 hci_handle_remote_features_page_1(conn, features); 3889 if (maximum_page_number >= 2){ 3890 // get Secure Connections (Controller) from Page 2 if available 3891 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3892 } else { 3893 // otherwise, assume SC (Controller) == SC (Host) 3894 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3895 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3896 } 3897 done = true; 3898 } 3899 break; 3900 case 2: 3901 hci_handle_remote_features_page_2(conn, features); 3902 done = true; 3903 break; 3904 default: 3905 break; 3906 } 3907 if (!done) break; 3908 } 3909 hci_handle_remote_features_received(conn); 3910 break; 3911 3912 case HCI_EVENT_LINK_KEY_REQUEST: 3913 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3914 hci_event_link_key_request_get_bd_addr(packet, addr); 3915 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3916 if (!conn) break; 3917 3918 // lookup link key in db if not cached 3919 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3920 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3921 } 3922 3923 // response sent by hci_run() 3924 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3925 #endif 3926 break; 3927 3928 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3929 hci_event_link_key_request_get_bd_addr(packet, addr); 3930 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3931 if (!conn) break; 3932 3933 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3934 3935 // CVE-2020-26555: ignore NULL link key 3936 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3937 if (btstack_is_null(&packet[8], 16)) break; 3938 3939 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3940 // Change Connection Encryption keeps link key type 3941 if (link_key_type != CHANGED_COMBINATION_KEY){ 3942 conn->link_key_type = link_key_type; 3943 } 3944 3945 // cache link key. link keys stored in little-endian format for legacy reasons 3946 memcpy(&conn->link_key, &packet[8], 16); 3947 3948 // only store link key: 3949 // - if bondable enabled 3950 if (hci_stack->bondable == false) break; 3951 // - if security level sufficient 3952 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3953 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3954 break; 3955 } 3956 3957 case HCI_EVENT_PIN_CODE_REQUEST: 3958 hci_event_pin_code_request_get_bd_addr(packet, addr); 3959 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3960 if (!conn) break; 3961 3962 hci_pairing_started(conn, false); 3963 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3964 if (!hci_stack->bondable ){ 3965 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3966 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3967 hci_run(); 3968 return; 3969 } 3970 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3971 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3972 log_info("Level 4 required, but SC not supported -> abort"); 3973 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3974 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3975 hci_run(); 3976 return; 3977 } 3978 break; 3979 3980 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3981 hci_event_io_capability_response_get_bd_addr(packet, addr); 3982 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3983 if (!conn) break; 3984 3985 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3986 hci_pairing_started(conn, true); 3987 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3988 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3989 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3990 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3991 #endif 3992 break; 3993 3994 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3995 hci_event_io_capability_response_get_bd_addr(packet, addr); 3996 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3997 if (!conn) break; 3998 3999 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4000 hci_connection_timestamp(conn); 4001 hci_pairing_started(conn, true); 4002 break; 4003 4004 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4005 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4006 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4007 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4008 if (!conn) break; 4009 4010 hci_connection_timestamp(conn); 4011 4012 hci_pairing_started(conn, true); 4013 4014 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4015 break; 4016 #endif 4017 4018 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4019 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4020 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4021 if (!conn) break; 4022 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4023 if (hci_stack->ssp_auto_accept){ 4024 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4025 }; 4026 } else { 4027 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4028 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4029 // don't forward event to app 4030 hci_run(); 4031 return; 4032 } 4033 break; 4034 4035 case HCI_EVENT_USER_PASSKEY_REQUEST: 4036 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4037 if (hci_stack->ssp_auto_accept){ 4038 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4039 }; 4040 break; 4041 4042 case HCI_EVENT_MODE_CHANGE: 4043 handle = hci_event_mode_change_get_handle(packet); 4044 conn = hci_connection_for_handle(handle); 4045 if (!conn) break; 4046 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4047 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4048 break; 4049 #endif 4050 4051 case HCI_EVENT_ENCRYPTION_CHANGE: 4052 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4053 handle = hci_event_encryption_change_get_connection_handle(packet); 4054 conn = hci_connection_for_handle(handle); 4055 if (!conn) break; 4056 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4057 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4058 if (encryption_enabled){ 4059 if (hci_is_le_connection(conn)){ 4060 // For LE, we accept connection as encrypted 4061 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4062 } 4063 #ifdef ENABLE_CLASSIC 4064 else { 4065 4066 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4067 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4068 bool connected_uses_aes_ccm = encryption_enabled == 2; 4069 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4070 #ifdef ENABLE_TESTING_SUPPORT 4071 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4072 // - GAP/SEC/SEM/BI-31-C 4073 // - GAP/SEC/SEM/BI-32-C 4074 // - GAP/SEC/SEM/BI-33-C 4075 4076 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4077 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4078 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4079 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4080 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4081 } 4082 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4083 conn->link_key_type, new_link_key_type); 4084 conn->link_key_type = new_link_key_type; 4085 #else 4086 log_info("SC during pairing, but only E0 now -> abort"); 4087 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4088 break; 4089 #endif 4090 } 4091 4092 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4093 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4094 if (connected_uses_aes_ccm){ 4095 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4096 } 4097 #else 4098 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4099 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4100 // for all operations that require any security. See BIAS attacks. 4101 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4102 #endif 4103 // validate encryption key size 4104 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4105 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4106 // already got encryption key size 4107 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4108 } else { 4109 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4110 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4111 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4112 } else { 4113 // if not, pretend everything is perfect 4114 hci_handle_read_encryption_key_size_complete(conn, 16); 4115 } 4116 } 4117 } 4118 #endif 4119 } else { 4120 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4121 } 4122 } else { 4123 #ifdef ENABLE_CLASSIC 4124 if (!hci_is_le_connection(conn)){ 4125 uint8_t status = hci_event_encryption_change_get_status(packet); 4126 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4127 conn->bonding_flags &= ~BONDING_DEDICATED; 4128 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4129 conn->bonding_status = status; 4130 } 4131 // trigger security update -> level 0 4132 hci_handle_mutual_authentication_completed(conn); 4133 } 4134 #endif 4135 } 4136 4137 break; 4138 4139 #ifdef ENABLE_CLASSIC 4140 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4141 handle = hci_event_authentication_complete_get_connection_handle(packet); 4142 conn = hci_connection_for_handle(handle); 4143 if (!conn) break; 4144 4145 // clear authentication active flag 4146 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4147 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4148 4149 // authenticated only if auth status == 0 4150 if (hci_event_authentication_complete_get_status(packet) == 0){ 4151 // authenticated 4152 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4153 4154 // If not already encrypted, start encryption 4155 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4156 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4157 break; 4158 } 4159 } 4160 4161 // emit updated security level (will be 0 if not authenticated) 4162 hci_handle_mutual_authentication_completed(conn); 4163 break; 4164 4165 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4166 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4167 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4168 if (!conn) break; 4169 4170 // treat successfully paired connection as authenticated 4171 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4172 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4173 } 4174 4175 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4176 break; 4177 #endif 4178 4179 // HCI_EVENT_DISCONNECTION_COMPLETE 4180 // has been split, to first notify stack before shutting connection down 4181 // see end of function, too. 4182 case HCI_EVENT_DISCONNECTION_COMPLETE: 4183 if (packet[2]) break; // status != 0 4184 handle = little_endian_read_16(packet, 3); 4185 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4186 if (hci_stack->acl_fragmentation_total_size > 0u) { 4187 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4188 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4189 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4190 hci_stack->acl_fragmentation_total_size = 0; 4191 hci_stack->acl_fragmentation_pos = 0; 4192 if (release_buffer){ 4193 hci_release_packet_buffer(); 4194 } 4195 } 4196 } 4197 4198 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4199 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4200 if (hci_stack->iso_fragmentation_total_size > 0u) { 4201 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4202 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4203 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4204 hci_stack->iso_fragmentation_total_size = 0; 4205 hci_stack->iso_fragmentation_pos = 0; 4206 if (release_buffer){ 4207 hci_release_packet_buffer(); 4208 } 4209 } 4210 } 4211 4212 // finalize iso stream for CIS handle 4213 iso_stream = hci_iso_stream_for_con_handle(handle); 4214 if (iso_stream != NULL){ 4215 hci_iso_stream_finalize(iso_stream); 4216 break; 4217 } 4218 4219 // finalize iso stream(s) for ACL handle 4220 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4221 while (btstack_linked_list_iterator_has_next(&it)){ 4222 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4223 if (iso_stream->acl_handle == handle ) { 4224 hci_iso_stream_finalize(iso_stream); 4225 } 4226 } 4227 #endif 4228 4229 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4230 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4231 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4232 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4233 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4234 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4235 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4236 hci_stack->num_cmd_packets = 1; 4237 } 4238 #endif 4239 4240 conn = hci_connection_for_handle(handle); 4241 if (!conn) break; 4242 #ifdef ENABLE_CLASSIC 4243 // pairing failed if it was ongoing 4244 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4245 #endif 4246 4247 // emit dedicatd bonding event 4248 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4249 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4250 } 4251 4252 // mark connection for shutdown, stop timers, reset state 4253 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4254 hci_connection_stop_timer(conn); 4255 hci_connection_init(conn); 4256 4257 #ifdef ENABLE_BLE 4258 #ifdef ENABLE_LE_PERIPHERAL 4259 // re-enable advertisements for le connections if active 4260 if (hci_is_le_connection(conn)){ 4261 hci_update_advertisements_enabled_for_current_roles(); 4262 } 4263 #endif 4264 #endif 4265 break; 4266 4267 case HCI_EVENT_HARDWARE_ERROR: 4268 log_error("Hardware Error: 0x%02x", packet[2]); 4269 if (hci_stack->hardware_error_callback){ 4270 (*hci_stack->hardware_error_callback)(packet[2]); 4271 } else { 4272 // if no special requests, just reboot stack 4273 hci_power_control_off(); 4274 hci_power_control_on(); 4275 } 4276 break; 4277 4278 #ifdef ENABLE_CLASSIC 4279 case HCI_EVENT_ROLE_CHANGE: 4280 if (packet[2]) break; // status != 0 4281 reverse_bd_addr(&packet[3], addr); 4282 addr_type = BD_ADDR_TYPE_ACL; 4283 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4284 if (!conn) break; 4285 conn->role = (hci_role_t) packet[9]; 4286 break; 4287 #endif 4288 4289 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4290 // release packet buffer only for asynchronous transport and if there are not further fragments 4291 if (hci_transport_synchronous()) { 4292 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4293 return; // instead of break: to avoid re-entering hci_run() 4294 } 4295 hci_stack->acl_fragmentation_tx_active = 0; 4296 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4297 hci_stack->iso_fragmentation_tx_active = 0; 4298 if (hci_stack->iso_fragmentation_total_size) break; 4299 #endif 4300 if (hci_stack->acl_fragmentation_total_size) break; 4301 4302 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4303 btstack_assert(hci_stack->hci_packet_buffer_reserved); 4304 hci_stack->hci_packet_buffer_reserved = false; 4305 4306 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4307 hci_iso_notify_can_send_now(); 4308 #endif 4309 // L2CAP receives this event via the hci_emit_event below 4310 4311 #ifdef ENABLE_CLASSIC 4312 // For SCO, we do the can_send_now_check here 4313 hci_notify_if_sco_can_send_now(); 4314 #endif 4315 break; 4316 4317 #ifdef ENABLE_CLASSIC 4318 case HCI_EVENT_SCO_CAN_SEND_NOW: 4319 // For SCO, we do the can_send_now_check here 4320 hci_stack->sco_can_send_now = true; 4321 hci_notify_if_sco_can_send_now(); 4322 return; 4323 4324 // explode inquriy results for easier consumption 4325 case HCI_EVENT_INQUIRY_RESULT: 4326 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4327 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4328 gap_inquiry_explode(packet, size); 4329 break; 4330 #endif 4331 4332 #ifdef ENABLE_BLE 4333 case HCI_EVENT_LE_META: 4334 switch (packet[2]){ 4335 #ifdef ENABLE_LE_CENTRAL 4336 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4337 if (!hci_stack->le_scanning_enabled) break; 4338 le_handle_advertisement_report(packet, size); 4339 break; 4340 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4341 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4342 if (!hci_stack->le_scanning_enabled) break; 4343 le_handle_extended_advertisement_report(packet, size); 4344 break; 4345 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4346 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4347 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4348 break; 4349 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4350 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4351 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4352 while (btstack_linked_list_iterator_has_next(&it)) { 4353 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4354 if (advertising_set->advertising_handle == advertising_handle){ 4355 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4356 } 4357 } 4358 break; 4359 #endif 4360 #endif 4361 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4362 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4363 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4364 hci_handle_le_connection_complete_event(packet); 4365 break; 4366 4367 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4368 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4369 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4370 conn = hci_connection_for_handle(handle); 4371 if (!conn) break; 4372 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4373 break; 4374 4375 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4376 // connection 4377 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4378 conn = hci_connection_for_handle(handle); 4379 if (conn) { 4380 // read arguments 4381 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4382 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4383 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4384 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4385 4386 // validate against current connection parameter range 4387 le_connection_parameter_range_t existing_range; 4388 gap_get_connection_parameter_range(&existing_range); 4389 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4390 if (update_parameter){ 4391 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4392 conn->le_conn_interval_min = le_conn_interval_min; 4393 conn->le_conn_interval_max = le_conn_interval_max; 4394 conn->le_conn_latency = le_conn_latency; 4395 conn->le_supervision_timeout = le_supervision_timeout; 4396 } else { 4397 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4398 } 4399 } 4400 break; 4401 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4402 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4403 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4404 conn = hci_connection_for_handle(handle); 4405 if (conn) { 4406 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4407 } 4408 break; 4409 #endif 4410 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4411 case HCI_SUBEVENT_LE_CIS_REQUEST: 4412 // incoming CIS request, allocate iso stream object and cache metadata 4413 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4414 hci_subevent_le_cis_request_get_cig_id(packet), 4415 hci_subevent_le_cis_request_get_cis_id(packet)); 4416 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4417 if (iso_stream != NULL){ 4418 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4419 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4420 } 4421 break; 4422 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4423 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4424 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4425 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4426 iso_stream = hci_iso_stream_for_con_handle(handle); 4427 btstack_assert(iso_stream != NULL); 4428 // track connection info 4429 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4430 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4431 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4432 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4433 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4434 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4435 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4436 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4437 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4438 // CIS Accept by Peripheral 4439 if (status == ERROR_CODE_SUCCESS){ 4440 if (iso_stream->max_sdu_p_to_c > 0){ 4441 // we're peripheral and we will send data 4442 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4443 } else { 4444 // we're peripheral and we will only receive data 4445 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4446 } 4447 } else { 4448 hci_cis_handle_created(iso_stream, status); 4449 } 4450 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4451 } else { 4452 // CIG Setup by Central 4453 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4454 btstack_assert(cig != NULL); 4455 // update iso stream state 4456 if (status == ERROR_CODE_SUCCESS){ 4457 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4458 } else { 4459 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4460 } 4461 // update cig state 4462 uint8_t i; 4463 for (i=0;i<cig->num_cis;i++){ 4464 if (cig->cis_con_handles[i] == handle){ 4465 cig->cis_setup_active[i] = false; 4466 if (status == ERROR_CODE_SUCCESS){ 4467 cig->cis_established[i] = true; 4468 } else { 4469 hci_cis_handle_created(iso_stream, status); 4470 } 4471 } 4472 } 4473 4474 // trigger iso path setup if complete 4475 bool cis_setup_active = false; 4476 for (i=0;i<cig->num_cis;i++){ 4477 cis_setup_active |= cig->cis_setup_active[i]; 4478 } 4479 if (cis_setup_active == false){ 4480 cig->state_vars.next_cis = 0; 4481 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4482 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4483 } 4484 } 4485 } 4486 break; 4487 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4488 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4489 big = hci_big_for_handle(packet[4]); 4490 if (big != NULL){ 4491 uint8_t status = packet[3]; 4492 if (status == ERROR_CODE_SUCCESS){ 4493 // store bis_con_handles and trigger iso path setup 4494 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4495 uint8_t i; 4496 for (i=0;i<num_bis;i++){ 4497 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4498 big->bis_con_handles[i] = bis_handle; 4499 // assign bis handle 4500 btstack_linked_list_iterator_t it; 4501 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4502 while (btstack_linked_list_iterator_has_next(&it)){ 4503 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4504 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4505 (iso_stream->group_id == big->big_handle)){ 4506 iso_stream->cis_handle = bis_handle; 4507 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4508 break; 4509 } 4510 } 4511 } 4512 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4513 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4514 big->state_vars.next_bis = 0; 4515 } 4516 } else { 4517 // create BIG failed or has been stopped by us 4518 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4519 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4520 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4521 hci_emit_big_created(big, status); 4522 } else { 4523 hci_emit_big_terminated(big); 4524 } 4525 } 4526 } 4527 break; 4528 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4529 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4530 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4531 if (big != NULL){ 4532 // finalize associated ISO streams 4533 btstack_linked_list_iterator_t it; 4534 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4535 while (btstack_linked_list_iterator_has_next(&it)){ 4536 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4537 if (iso_stream->group_id == big->big_handle){ 4538 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4539 btstack_linked_list_iterator_remove(&it); 4540 btstack_memory_hci_iso_stream_free(iso_stream); 4541 } 4542 } 4543 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4544 switch (big->state){ 4545 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4546 hci_emit_big_created(big, big->state_vars.status); 4547 break; 4548 default: 4549 hci_emit_big_terminated(big); 4550 break; 4551 } 4552 } 4553 break; 4554 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4555 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4556 big_sync = hci_big_sync_for_handle(packet[4]); 4557 if (big_sync != NULL){ 4558 uint8_t status = packet[3]; 4559 if (status == ERROR_CODE_SUCCESS){ 4560 // store bis_con_handles and trigger iso path setup 4561 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4562 for (i=0;i<num_bis;i++){ 4563 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4564 big_sync->bis_con_handles[i] = bis_handle; 4565 // setup iso_stream_t 4566 btstack_linked_list_iterator_t it; 4567 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4568 while (btstack_linked_list_iterator_has_next(&it)){ 4569 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4570 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4571 (iso_stream->group_id == big_sync->big_handle)){ 4572 iso_stream->cis_handle = bis_handle; 4573 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4574 break; 4575 } 4576 } 4577 } 4578 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4579 // trigger iso path setup 4580 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4581 big_sync->state_vars.next_bis = 0; 4582 } 4583 } else { 4584 // create BIG Sync failed or has been stopped by us 4585 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4586 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4587 hci_emit_big_sync_created(big_sync, status); 4588 } else { 4589 hci_emit_big_sync_stopped(big_handle); 4590 } 4591 } 4592 } 4593 break; 4594 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4595 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4596 big_sync = hci_big_sync_for_handle(packet[4]); 4597 if (big_sync != NULL){ 4598 uint8_t big_handle = packet[4]; 4599 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4600 hci_emit_big_sync_stopped(big_handle); 4601 } 4602 break; 4603 #endif 4604 default: 4605 break; 4606 } 4607 break; 4608 #endif 4609 case HCI_EVENT_VENDOR_SPECIFIC: 4610 // Vendor specific commands often create vendor specific event instead of num completed packets 4611 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4612 switch (hci_stack->manufacturer){ 4613 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4614 hci_stack->num_cmd_packets = 1; 4615 break; 4616 default: 4617 break; 4618 } 4619 break; 4620 default: 4621 break; 4622 } 4623 4624 handle_event_for_current_stack_state(packet, size); 4625 4626 // notify upper stack 4627 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4628 4629 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4630 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4631 handle = little_endian_read_16(packet, 3); 4632 hci_connection_t * aConn = hci_connection_for_handle(handle); 4633 // discard connection if app did not trigger a reconnect in the event handler 4634 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4635 hci_shutdown_connection(aConn); 4636 } 4637 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4638 hci_controller_dump_packets(); 4639 #endif 4640 } 4641 4642 // execute main loop 4643 hci_run(); 4644 } 4645 4646 #ifdef ENABLE_CLASSIC 4647 4648 static void sco_handler(uint8_t * packet, uint16_t size){ 4649 // lookup connection struct 4650 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4651 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4652 if (!conn) return; 4653 4654 #ifdef ENABLE_SCO_OVER_HCI 4655 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4656 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4657 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4658 packet[2] = 0x3c; 4659 memmove(&packet[3], &packet[23], 63); 4660 size = 63; 4661 } 4662 } 4663 4664 if (hci_have_usb_transport()){ 4665 // Nothing to do 4666 } else { 4667 // 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); 4668 if (hci_stack->synchronous_flow_control_enabled == 0){ 4669 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4670 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4671 if (conn->sco_tx_active == 0){ 4672 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4673 conn->sco_tx_active = 1; 4674 conn->sco_tx_ready = max_sco_packets; 4675 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4676 hci_notify_if_sco_can_send_now(); 4677 } 4678 } else { 4679 if (conn->sco_tx_ready < max_sco_packets){ 4680 conn->sco_tx_ready++; 4681 } 4682 hci_notify_if_sco_can_send_now(); 4683 } 4684 } 4685 } 4686 #endif 4687 4688 // deliver to app 4689 if (hci_stack->sco_packet_handler) { 4690 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4691 } 4692 4693 #ifdef HAVE_SCO_TRANSPORT 4694 // We can send one packet for each received packet 4695 conn->sco_tx_ready++; 4696 hci_notify_if_sco_can_send_now(); 4697 #endif 4698 4699 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4700 conn->num_packets_completed++; 4701 hci_stack->host_completed_packets = 1; 4702 hci_run(); 4703 #endif 4704 } 4705 #endif 4706 4707 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4708 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4709 // propagate ISO packets received as ACL 4710 hci_iso_stream_t * iso_stream = NULL; 4711 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4712 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4713 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4714 if (iso_stream != NULL){ 4715 packet_type = HCI_ISO_DATA_PACKET; 4716 } 4717 } 4718 #endif 4719 4720 hci_dump_packet(packet_type, 1, packet, size); 4721 switch (packet_type) { 4722 case HCI_EVENT_PACKET: 4723 event_handler(packet, size); 4724 break; 4725 case HCI_ACL_DATA_PACKET: 4726 acl_handler(packet, size); 4727 break; 4728 #ifdef ENABLE_CLASSIC 4729 case HCI_SCO_DATA_PACKET: 4730 sco_handler(packet, size); 4731 break; 4732 #endif 4733 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4734 case HCI_ISO_DATA_PACKET: 4735 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4736 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4737 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4738 } 4739 hci_iso_packet_handler(iso_stream, packet, size); 4740 break; 4741 #endif 4742 default: 4743 break; 4744 } 4745 } 4746 4747 /** 4748 * @brief Add event packet handler. 4749 */ 4750 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4751 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4752 } 4753 4754 /** 4755 * @brief Remove event packet handler. 4756 */ 4757 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4758 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4759 } 4760 4761 /** Register HCI packet handlers */ 4762 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4763 hci_stack->acl_packet_handler = handler; 4764 } 4765 4766 #ifdef ENABLE_CLASSIC 4767 /** 4768 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4769 */ 4770 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4771 hci_stack->sco_packet_handler = handler; 4772 } 4773 #endif 4774 4775 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4776 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4777 hci_stack->iso_packet_handler = handler; 4778 } 4779 #endif 4780 4781 static void hci_state_reset(void){ 4782 // no connections yet 4783 hci_stack->connections = NULL; 4784 4785 // keep discoverable/connectable as this has been requested by the client(s) 4786 // hci_stack->discoverable = 0; 4787 // hci_stack->connectable = 0; 4788 // hci_stack->bondable = 1; 4789 // hci_stack->own_addr_type = 0; 4790 4791 // buffer is free 4792 hci_stack->hci_packet_buffer_reserved = false; 4793 4794 // no pending cmds 4795 hci_stack->decline_reason = 0; 4796 4797 hci_stack->secure_connections_active = false; 4798 4799 #ifdef ENABLE_CLASSIC 4800 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4801 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4802 4803 hci_stack->gap_tasks_classic = 4804 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4805 GAP_TASK_SET_CLASS_OF_DEVICE | 4806 GAP_TASK_SET_LOCAL_NAME | 4807 GAP_TASK_SET_EIR_DATA | 4808 GAP_TASK_WRITE_SCAN_ENABLE | 4809 GAP_TASK_WRITE_PAGE_TIMEOUT; 4810 #endif 4811 4812 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4813 hci_stack->classic_read_local_oob_data = false; 4814 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4815 #endif 4816 4817 // LE 4818 #ifdef ENABLE_BLE 4819 memset(hci_stack->le_random_address, 0, 6); 4820 hci_stack->le_random_address_set = 0; 4821 #endif 4822 #ifdef ENABLE_LE_CENTRAL 4823 hci_stack->le_scanning_active = false; 4824 hci_stack->le_scanning_param_update = true; 4825 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4826 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4827 hci_stack->le_whitelist_capacity = 0; 4828 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4829 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4830 #endif 4831 #endif 4832 #ifdef ENABLE_LE_PERIPHERAL 4833 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4834 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4835 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4836 } 4837 if (hci_stack->le_advertisements_data != NULL){ 4838 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4839 } 4840 #endif 4841 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4842 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4843 #endif 4844 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4845 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4846 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4847 #endif 4848 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4849 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4850 #endif 4851 } 4852 4853 #ifdef ENABLE_CLASSIC 4854 /** 4855 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4856 */ 4857 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4858 // store and open remote device db 4859 hci_stack->link_key_db = link_key_db; 4860 if (hci_stack->link_key_db) { 4861 hci_stack->link_key_db->open(); 4862 } 4863 } 4864 #endif 4865 4866 void hci_init(const hci_transport_t *transport, const void *config){ 4867 4868 #ifdef HAVE_MALLOC 4869 if (!hci_stack) { 4870 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4871 } 4872 #else 4873 hci_stack = &hci_stack_static; 4874 #endif 4875 memset(hci_stack, 0, sizeof(hci_stack_t)); 4876 4877 // reference to use transport layer implementation 4878 hci_stack->hci_transport = transport; 4879 4880 // reference to used config 4881 hci_stack->config = config; 4882 4883 // setup pointer for outgoing packet buffer 4884 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4885 4886 // max acl payload size defined in config.h 4887 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4888 4889 // register packet handlers with transport 4890 transport->register_packet_handler(&packet_handler); 4891 4892 hci_stack->state = HCI_STATE_OFF; 4893 4894 // class of device 4895 hci_stack->class_of_device = 0x007a020c; // Smartphone 4896 4897 // bondable by default 4898 hci_stack->bondable = 1; 4899 4900 #ifdef ENABLE_CLASSIC 4901 // classic name 4902 hci_stack->local_name = default_classic_name; 4903 4904 // Master slave policy 4905 hci_stack->master_slave_policy = 1; 4906 4907 // Allow Role Switch 4908 hci_stack->allow_role_switch = 1; 4909 4910 // Default / minimum security level = 2 4911 hci_stack->gap_security_level = LEVEL_2; 4912 4913 // Default Security Mode 4 4914 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4915 4916 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4917 hci_stack->gap_required_encyrption_key_size = 7; 4918 4919 // Link Supervision Timeout 4920 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4921 4922 // All ACL packet types are enabledh 4923 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4924 #endif 4925 4926 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4927 hci_stack->ssp_enable = 1; 4928 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4929 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4930 hci_stack->ssp_auto_accept = 1; 4931 4932 // Secure Connections: enable (requires support from Controller) 4933 hci_stack->secure_connections_enable = true; 4934 4935 // voice setting - signed 16 bit pcm data with CVSD over the air 4936 hci_stack->sco_voice_setting = 0x60; 4937 4938 #ifdef ENABLE_BLE 4939 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4940 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4941 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4942 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4943 hci_stack->le_connection_latency = 4; // 4 4944 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4945 hci_stack->le_minimum_ce_length = 0; // 0 ms 4946 hci_stack->le_maximum_ce_length = 0; // 0 ms 4947 #endif 4948 4949 #ifdef ENABLE_LE_CENTRAL 4950 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4951 4952 // default LE Scanning 4953 hci_stack->le_scan_type = 0x01; // active 4954 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4955 hci_stack->le_scan_window = 0x30; // 30 ms 4956 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4957 #endif 4958 4959 #ifdef ENABLE_LE_PERIPHERAL 4960 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4961 4962 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4963 hci_stack->le_advertisements_interval_min = 0x0800; 4964 hci_stack->le_advertisements_interval_max = 0x0800; 4965 hci_stack->le_advertisements_type = 0; 4966 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4967 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4968 hci_stack->le_advertisements_channel_map = 0x07; 4969 hci_stack->le_advertisements_filter_policy = 0; 4970 #endif 4971 4972 // connection parameter range used to answer connection parameter update requests in l2cap 4973 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4974 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4975 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4976 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4977 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4978 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4979 4980 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4981 hci_stack->iso_packets_to_queue = 1; 4982 #endif 4983 4984 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4985 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4986 #endif 4987 4988 hci_state_reset(); 4989 } 4990 4991 void hci_deinit(void){ 4992 btstack_run_loop_remove_timer(&hci_stack->timeout); 4993 #ifdef HAVE_MALLOC 4994 if (hci_stack) { 4995 free(hci_stack); 4996 } 4997 #endif 4998 hci_stack = NULL; 4999 5000 #ifdef ENABLE_CLASSIC 5001 disable_l2cap_timeouts = 0; 5002 #endif 5003 } 5004 5005 /** 5006 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5007 */ 5008 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5009 hci_stack->chipset = chipset_driver; 5010 5011 // reset chipset driver - init is also called on power_up 5012 if (hci_stack->chipset && hci_stack->chipset->init){ 5013 hci_stack->chipset->init(hci_stack->config); 5014 } 5015 } 5016 5017 void hci_enable_custom_pre_init(void){ 5018 hci_stack->chipset_pre_init = true; 5019 } 5020 5021 /** 5022 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5023 */ 5024 void hci_set_control(const btstack_control_t *hardware_control){ 5025 // references to used control implementation 5026 hci_stack->control = hardware_control; 5027 // init with transport config 5028 hardware_control->init(hci_stack->config); 5029 } 5030 5031 static void hci_discard_connections(void){ 5032 btstack_linked_list_iterator_t it; 5033 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5034 while (btstack_linked_list_iterator_has_next(&it)){ 5035 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5036 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5037 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5038 hci_shutdown_connection(connection); 5039 } 5040 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5041 while (hci_stack->iso_streams != NULL){ 5042 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5043 } 5044 #endif 5045 } 5046 5047 void hci_close(void){ 5048 5049 #ifdef ENABLE_CLASSIC 5050 // close remote device db 5051 if (hci_stack->link_key_db) { 5052 hci_stack->link_key_db->close(); 5053 } 5054 #endif 5055 5056 hci_discard_connections(); 5057 5058 hci_power_control(HCI_POWER_OFF); 5059 5060 #ifdef HAVE_MALLOC 5061 free(hci_stack); 5062 #endif 5063 hci_stack = NULL; 5064 } 5065 5066 #ifdef HAVE_SCO_TRANSPORT 5067 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5068 hci_stack->sco_transport = sco_transport; 5069 sco_transport->register_packet_handler(&packet_handler); 5070 } 5071 #endif 5072 5073 #ifdef ENABLE_CLASSIC 5074 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5075 // validate ranage and set 5076 if (encryption_key_size < 7) return; 5077 if (encryption_key_size > 16) return; 5078 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5079 } 5080 5081 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5082 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5083 hci_stack->gap_security_mode = security_mode; 5084 return ERROR_CODE_SUCCESS; 5085 } else { 5086 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5087 } 5088 } 5089 5090 gap_security_mode_t gap_get_security_mode(void){ 5091 return hci_stack->gap_security_mode; 5092 } 5093 5094 void gap_set_security_level(gap_security_level_t security_level){ 5095 hci_stack->gap_security_level = security_level; 5096 } 5097 5098 gap_security_level_t gap_get_security_level(void){ 5099 if (hci_stack->gap_secure_connections_only_mode){ 5100 return LEVEL_4; 5101 } 5102 return hci_stack->gap_security_level; 5103 } 5104 5105 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5106 hci_stack->gap_minimal_service_security_level = security_level; 5107 } 5108 5109 void gap_set_secure_connections_only_mode(bool enable){ 5110 hci_stack->gap_secure_connections_only_mode = enable; 5111 } 5112 5113 bool gap_get_secure_connections_only_mode(void){ 5114 return hci_stack->gap_secure_connections_only_mode; 5115 } 5116 #endif 5117 5118 #ifdef ENABLE_CLASSIC 5119 void gap_set_class_of_device(uint32_t class_of_device){ 5120 hci_stack->class_of_device = class_of_device; 5121 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5122 hci_run(); 5123 } 5124 5125 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5126 hci_stack->default_link_policy_settings = default_link_policy_settings; 5127 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5128 hci_run(); 5129 } 5130 5131 void gap_set_allow_role_switch(bool allow_role_switch){ 5132 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5133 } 5134 5135 uint8_t hci_get_allow_role_switch(void){ 5136 return hci_stack->allow_role_switch; 5137 } 5138 5139 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5140 hci_stack->link_supervision_timeout = link_supervision_timeout; 5141 } 5142 5143 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5144 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5145 } 5146 5147 uint16_t hci_automatic_flush_timeout(void){ 5148 return hci_stack->automatic_flush_timeout; 5149 } 5150 5151 void hci_disable_l2cap_timeout_check(void){ 5152 disable_l2cap_timeouts = 1; 5153 } 5154 #endif 5155 5156 #ifndef HAVE_HOST_CONTROLLER_API 5157 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5158 void hci_set_bd_addr(bd_addr_t addr){ 5159 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5160 hci_stack->custom_bd_addr_set = 1; 5161 } 5162 #endif 5163 5164 // State-Module-Driver overview 5165 // state module low-level 5166 // HCI_STATE_OFF off close 5167 // HCI_STATE_INITIALIZING, on open 5168 // HCI_STATE_WORKING, on open 5169 // HCI_STATE_HALTING, on open 5170 // HCI_STATE_SLEEPING, off/sleep close 5171 // HCI_STATE_FALLING_ASLEEP on open 5172 5173 static int hci_power_control_on(void){ 5174 5175 // power on 5176 int err = 0; 5177 if (hci_stack->control && hci_stack->control->on){ 5178 err = (*hci_stack->control->on)(); 5179 } 5180 if (err){ 5181 log_error( "POWER_ON failed"); 5182 hci_emit_hci_open_failed(); 5183 return err; 5184 } 5185 5186 // int chipset driver 5187 if (hci_stack->chipset && hci_stack->chipset->init){ 5188 hci_stack->chipset->init(hci_stack->config); 5189 } 5190 5191 // init transport 5192 if (hci_stack->hci_transport->init){ 5193 hci_stack->hci_transport->init(hci_stack->config); 5194 } 5195 5196 // open transport 5197 err = hci_stack->hci_transport->open(); 5198 if (err){ 5199 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5200 if (hci_stack->control && hci_stack->control->off){ 5201 (*hci_stack->control->off)(); 5202 } 5203 hci_emit_hci_open_failed(); 5204 return err; 5205 } 5206 return 0; 5207 } 5208 5209 static void hci_power_control_off(void){ 5210 5211 log_info("hci_power_control_off"); 5212 5213 // close low-level device 5214 hci_stack->hci_transport->close(); 5215 5216 log_info("hci_power_control_off - hci_transport closed"); 5217 5218 // power off 5219 if (hci_stack->control && hci_stack->control->off){ 5220 (*hci_stack->control->off)(); 5221 } 5222 5223 log_info("hci_power_control_off - control closed"); 5224 5225 hci_stack->state = HCI_STATE_OFF; 5226 } 5227 5228 static void hci_power_control_sleep(void){ 5229 5230 log_info("hci_power_control_sleep"); 5231 5232 #if 0 5233 // don't close serial port during sleep 5234 5235 // close low-level device 5236 hci_stack->hci_transport->close(hci_stack->config); 5237 #endif 5238 5239 // sleep mode 5240 if (hci_stack->control && hci_stack->control->sleep){ 5241 (*hci_stack->control->sleep)(); 5242 } 5243 5244 hci_stack->state = HCI_STATE_SLEEPING; 5245 } 5246 5247 static int hci_power_control_wake(void){ 5248 5249 log_info("hci_power_control_wake"); 5250 5251 // wake on 5252 if (hci_stack->control && hci_stack->control->wake){ 5253 (*hci_stack->control->wake)(); 5254 } 5255 5256 #if 0 5257 // open low-level device 5258 int err = hci_stack->hci_transport->open(hci_stack->config); 5259 if (err){ 5260 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5261 if (hci_stack->control && hci_stack->control->off){ 5262 (*hci_stack->control->off)(); 5263 } 5264 hci_emit_hci_open_failed(); 5265 return err; 5266 } 5267 #endif 5268 5269 return 0; 5270 } 5271 5272 static void hci_power_enter_initializing_state(void){ 5273 // set up state machine 5274 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5275 hci_stack->hci_packet_buffer_reserved = false; 5276 hci_stack->state = HCI_STATE_INITIALIZING; 5277 5278 #ifndef HAVE_HOST_CONTROLLER_API 5279 if (hci_stack->chipset_pre_init) { 5280 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5281 } else 5282 #endif 5283 { 5284 hci_stack->substate = HCI_INIT_SEND_RESET; 5285 } 5286 } 5287 5288 static void hci_power_enter_halting_state(void){ 5289 #ifdef ENABLE_BLE 5290 // drop entries scheduled for removal, mark others for re-adding 5291 btstack_linked_list_iterator_t it; 5292 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5293 while (btstack_linked_list_iterator_has_next(&it)){ 5294 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5295 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5296 btstack_linked_list_iterator_remove(&it); 5297 btstack_memory_whitelist_entry_free(entry); 5298 } else { 5299 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5300 } 5301 } 5302 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5303 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5304 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5305 while (btstack_linked_list_iterator_has_next(&it)){ 5306 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5307 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5308 btstack_linked_list_iterator_remove(&it); 5309 btstack_memory_periodic_advertiser_list_entry_free(entry); 5310 } else { 5311 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5312 continue; 5313 } 5314 } 5315 #endif 5316 #endif 5317 // see hci_run 5318 hci_stack->state = HCI_STATE_HALTING; 5319 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5320 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5321 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5322 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5323 btstack_run_loop_add_timer(&hci_stack->timeout); 5324 } 5325 5326 // returns error 5327 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5328 int err; 5329 switch (power_mode){ 5330 case HCI_POWER_ON: 5331 err = hci_power_control_on(); 5332 if (err != 0) { 5333 log_error("hci_power_control_on() error %d", err); 5334 return err; 5335 } 5336 hci_power_enter_initializing_state(); 5337 break; 5338 case HCI_POWER_OFF: 5339 // do nothing 5340 break; 5341 case HCI_POWER_SLEEP: 5342 // do nothing (with SLEEP == OFF) 5343 break; 5344 default: 5345 btstack_assert(false); 5346 break; 5347 } 5348 return ERROR_CODE_SUCCESS; 5349 } 5350 5351 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5352 switch (power_mode){ 5353 case HCI_POWER_ON: 5354 // do nothing 5355 break; 5356 case HCI_POWER_OFF: 5357 // no connections yet, just turn it off 5358 hci_power_control_off(); 5359 break; 5360 case HCI_POWER_SLEEP: 5361 // no connections yet, just turn it off 5362 hci_power_control_sleep(); 5363 break; 5364 default: 5365 btstack_assert(false); 5366 break; 5367 } 5368 return ERROR_CODE_SUCCESS; 5369 } 5370 5371 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5372 switch (power_mode){ 5373 case HCI_POWER_ON: 5374 // do nothing 5375 break; 5376 case HCI_POWER_OFF: 5377 hci_power_enter_halting_state(); 5378 break; 5379 case HCI_POWER_SLEEP: 5380 // see hci_run 5381 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5382 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5383 break; 5384 default: 5385 btstack_assert(false); 5386 break; 5387 } 5388 return ERROR_CODE_SUCCESS; 5389 } 5390 5391 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5392 switch (power_mode){ 5393 case HCI_POWER_ON: 5394 hci_power_enter_initializing_state(); 5395 break; 5396 case HCI_POWER_OFF: 5397 // do nothing 5398 break; 5399 case HCI_POWER_SLEEP: 5400 // see hci_run 5401 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5402 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5403 break; 5404 default: 5405 btstack_assert(false); 5406 break; 5407 } 5408 return ERROR_CODE_SUCCESS; 5409 } 5410 5411 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5412 switch (power_mode){ 5413 case HCI_POWER_ON: 5414 hci_power_enter_initializing_state(); 5415 break; 5416 case HCI_POWER_OFF: 5417 hci_power_enter_halting_state(); 5418 break; 5419 case HCI_POWER_SLEEP: 5420 // do nothing 5421 break; 5422 default: 5423 btstack_assert(false); 5424 break; 5425 } 5426 return ERROR_CODE_SUCCESS; 5427 } 5428 5429 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5430 int err; 5431 switch (power_mode){ 5432 case HCI_POWER_ON: 5433 err = hci_power_control_wake(); 5434 if (err) return err; 5435 hci_power_enter_initializing_state(); 5436 break; 5437 case HCI_POWER_OFF: 5438 hci_power_enter_halting_state(); 5439 break; 5440 case HCI_POWER_SLEEP: 5441 // do nothing 5442 break; 5443 default: 5444 btstack_assert(false); 5445 break; 5446 } 5447 return ERROR_CODE_SUCCESS; 5448 } 5449 5450 int hci_power_control(HCI_POWER_MODE power_mode){ 5451 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5452 btstack_run_loop_remove_timer(&hci_stack->timeout); 5453 int err = 0; 5454 switch (hci_stack->state){ 5455 case HCI_STATE_OFF: 5456 err = hci_power_control_state_off(power_mode); 5457 break; 5458 case HCI_STATE_INITIALIZING: 5459 err = hci_power_control_state_initializing(power_mode); 5460 break; 5461 case HCI_STATE_WORKING: 5462 err = hci_power_control_state_working(power_mode); 5463 break; 5464 case HCI_STATE_HALTING: 5465 err = hci_power_control_state_halting(power_mode); 5466 break; 5467 case HCI_STATE_FALLING_ASLEEP: 5468 err = hci_power_control_state_falling_asleep(power_mode); 5469 break; 5470 case HCI_STATE_SLEEPING: 5471 err = hci_power_control_state_sleeping(power_mode); 5472 break; 5473 default: 5474 btstack_assert(false); 5475 break; 5476 } 5477 if (err != 0){ 5478 return err; 5479 } 5480 5481 // create internal event 5482 hci_emit_state(); 5483 5484 // trigger next/first action 5485 hci_run(); 5486 5487 return 0; 5488 } 5489 5490 5491 static void hci_halting_run(void) { 5492 5493 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5494 5495 hci_connection_t *connection; 5496 #ifdef ENABLE_BLE 5497 #ifdef ENABLE_LE_PERIPHERAL 5498 bool stop_advertismenets; 5499 #endif 5500 #endif 5501 5502 switch (hci_stack->substate) { 5503 case HCI_HALTING_CLASSIC_STOP: 5504 #ifdef ENABLE_CLASSIC 5505 if (!hci_can_send_command_packet_now()) return; 5506 5507 if (hci_stack->connectable || hci_stack->discoverable){ 5508 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5509 hci_send_cmd(&hci_write_scan_enable, 0); 5510 return; 5511 } 5512 #endif 5513 /* fall through */ 5514 5515 case HCI_HALTING_LE_ADV_STOP: 5516 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5517 5518 #ifdef ENABLE_BLE 5519 #ifdef ENABLE_LE_PERIPHERAL 5520 if (!hci_can_send_command_packet_now()) return; 5521 5522 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5523 5524 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5525 if (hci_le_extended_advertising_supported()){ 5526 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5527 btstack_linked_list_iterator_t it; 5528 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5529 // stop all periodic advertisements and check if an extended set is active 5530 while (btstack_linked_list_iterator_has_next(&it)){ 5531 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5532 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5533 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5534 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5535 return; 5536 } 5537 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5538 stop_advertismenets = true; 5539 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5540 } 5541 } 5542 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5543 if (stop_advertismenets){ 5544 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5545 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5546 return; 5547 } 5548 } else 5549 #else /* ENABLE_LE_PERIPHERAL */ 5550 { 5551 if (stop_advertismenets) { 5552 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5553 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5554 return; 5555 } 5556 } 5557 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5558 #endif /* ENABLE_LE_PERIPHERAL */ 5559 #endif /* ENABLE_BLE */ 5560 5561 /* fall through */ 5562 5563 case HCI_HALTING_LE_SCAN_STOP: 5564 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5565 if (!hci_can_send_command_packet_now()) return; 5566 5567 #ifdef ENABLE_BLE 5568 #ifdef ENABLE_LE_CENTRAL 5569 if (hci_stack->le_scanning_active){ 5570 hci_le_scan_stop(); 5571 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5572 return; 5573 } 5574 #endif 5575 #endif 5576 5577 /* fall through */ 5578 5579 case HCI_HALTING_DISCONNECT_ALL: 5580 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5581 if (!hci_can_send_command_packet_now()) return; 5582 5583 // close all open connections 5584 connection = (hci_connection_t *) hci_stack->connections; 5585 if (connection) { 5586 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5587 5588 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5589 5590 // check state 5591 switch(connection->state) { 5592 case SENT_DISCONNECT: 5593 case RECEIVED_DISCONNECTION_COMPLETE: 5594 // wait until connection is gone 5595 return; 5596 default: 5597 break; 5598 } 5599 5600 // finally, send the disconnect command 5601 connection->state = SENT_DISCONNECT; 5602 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5603 return; 5604 } 5605 5606 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5607 // stop BIGs and BIG Syncs 5608 if (hci_stack->le_audio_bigs != NULL){ 5609 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5610 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5611 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5612 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5613 return; 5614 } 5615 if (hci_stack->le_audio_big_syncs != NULL){ 5616 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5617 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5618 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5619 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5620 return; 5621 } 5622 #endif 5623 5624 btstack_run_loop_remove_timer(&hci_stack->timeout); 5625 5626 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5627 log_info("HCI_STATE_HALTING: wait 50 ms"); 5628 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5629 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5630 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5631 btstack_run_loop_add_timer(&hci_stack->timeout); 5632 break; 5633 5634 case HCI_HALTING_W4_CLOSE_TIMER: 5635 // keep waiting 5636 break; 5637 5638 case HCI_HALTING_CLOSE: 5639 // close left over connections (that had not been properly closed before) 5640 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5641 hci_discard_connections(); 5642 5643 log_info("HCI_STATE_HALTING, calling off"); 5644 5645 // switch mode 5646 hci_power_control_off(); 5647 5648 log_info("HCI_STATE_HALTING, emitting state"); 5649 hci_emit_state(); 5650 log_info("HCI_STATE_HALTING, done"); 5651 break; 5652 5653 default: 5654 break; 5655 } 5656 }; 5657 5658 static void hci_falling_asleep_run(void){ 5659 hci_connection_t * connection; 5660 switch(hci_stack->substate) { 5661 case HCI_FALLING_ASLEEP_DISCONNECT: 5662 log_info("HCI_STATE_FALLING_ASLEEP"); 5663 // close all open connections 5664 connection = (hci_connection_t *) hci_stack->connections; 5665 if (connection){ 5666 5667 // send disconnect 5668 if (!hci_can_send_command_packet_now()) return; 5669 5670 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5671 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5672 5673 // send disconnected event right away - causes higher layer connections to get closed, too. 5674 hci_shutdown_connection(connection); 5675 return; 5676 } 5677 5678 if (hci_classic_supported()){ 5679 // disable page and inquiry scan 5680 if (!hci_can_send_command_packet_now()) return; 5681 5682 log_info("HCI_STATE_HALTING, disabling inq scans"); 5683 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5684 5685 // continue in next sub state 5686 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5687 break; 5688 } 5689 5690 /* fall through */ 5691 5692 case HCI_FALLING_ASLEEP_COMPLETE: 5693 log_info("HCI_STATE_HALTING, calling sleep"); 5694 // switch mode 5695 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5696 hci_emit_state(); 5697 break; 5698 5699 default: 5700 break; 5701 } 5702 } 5703 5704 #ifdef ENABLE_CLASSIC 5705 5706 static void hci_update_scan_enable(void){ 5707 // 2 = page scan, 1 = inq scan 5708 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5709 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5710 hci_run(); 5711 } 5712 5713 void gap_discoverable_control(uint8_t enable){ 5714 if (enable) enable = 1; // normalize argument 5715 5716 if (hci_stack->discoverable == enable){ 5717 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5718 return; 5719 } 5720 5721 hci_stack->discoverable = enable; 5722 hci_update_scan_enable(); 5723 } 5724 5725 void gap_connectable_control(uint8_t enable){ 5726 if (enable) enable = 1; // normalize argument 5727 5728 // don't emit event 5729 if (hci_stack->connectable == enable) return; 5730 5731 hci_stack->connectable = enable; 5732 hci_update_scan_enable(); 5733 } 5734 #endif 5735 5736 void gap_local_bd_addr(bd_addr_t address_buffer){ 5737 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5738 } 5739 5740 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5741 static void hci_host_num_completed_packets(void){ 5742 5743 // create packet manually as arrays are not supported and num_commands should not get reduced 5744 hci_reserve_packet_buffer(); 5745 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5746 5747 uint16_t size = 0; 5748 uint16_t num_handles = 0; 5749 packet[size++] = 0x35; 5750 packet[size++] = 0x0c; 5751 size++; // skip param len 5752 size++; // skip num handles 5753 5754 // add { handle, packets } entries 5755 btstack_linked_item_t * it; 5756 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5757 hci_connection_t * connection = (hci_connection_t *) it; 5758 if (connection->num_packets_completed){ 5759 little_endian_store_16(packet, size, connection->con_handle); 5760 size += 2; 5761 little_endian_store_16(packet, size, connection->num_packets_completed); 5762 size += 2; 5763 // 5764 num_handles++; 5765 connection->num_packets_completed = 0; 5766 } 5767 } 5768 5769 packet[2] = size - 3; 5770 packet[3] = num_handles; 5771 5772 hci_stack->host_completed_packets = 0; 5773 5774 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5775 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5776 5777 // release packet buffer for synchronous transport implementations 5778 if (hci_transport_synchronous()){ 5779 hci_release_packet_buffer(); 5780 hci_emit_transport_packet_sent(); 5781 } 5782 } 5783 #endif 5784 5785 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5786 UNUSED(ds); 5787 hci_stack->substate = HCI_HALTING_CLOSE; 5788 hci_halting_run(); 5789 } 5790 5791 static bool hci_run_acl_fragments(void){ 5792 if (hci_stack->acl_fragmentation_total_size > 0u) { 5793 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5794 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5795 if (connection) { 5796 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5797 hci_send_acl_packet_fragments(connection); 5798 return true; 5799 } 5800 } else { 5801 // connection gone -> discard further fragments 5802 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5803 hci_stack->acl_fragmentation_total_size = 0; 5804 hci_stack->acl_fragmentation_pos = 0; 5805 } 5806 } 5807 return false; 5808 } 5809 5810 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5811 static bool hci_run_iso_fragments(void){ 5812 if (hci_stack->iso_fragmentation_total_size > 0u) { 5813 // TODO: flow control 5814 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5815 hci_send_iso_packet_fragments(); 5816 return true; 5817 } 5818 } 5819 return false; 5820 } 5821 #endif 5822 5823 #ifdef ENABLE_CLASSIC 5824 5825 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5826 static bool hci_classic_operation_active(void) { 5827 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5828 return true; 5829 } 5830 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5831 return true; 5832 } 5833 btstack_linked_item_t * it; 5834 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5835 hci_connection_t *connection = (hci_connection_t *) it; 5836 switch (connection->state) { 5837 case SENT_CREATE_CONNECTION: 5838 case SENT_CANCEL_CONNECTION: 5839 case SENT_DISCONNECT: 5840 return true; 5841 default: 5842 break; 5843 } 5844 } 5845 return false; 5846 } 5847 #endif 5848 5849 static bool hci_run_general_gap_classic(void){ 5850 5851 // assert stack is working and classic is active 5852 if (hci_classic_supported() == false) return false; 5853 if (hci_stack->state != HCI_STATE_WORKING) return false; 5854 5855 // decline incoming connections 5856 if (hci_stack->decline_reason){ 5857 uint8_t reason = hci_stack->decline_reason; 5858 hci_stack->decline_reason = 0; 5859 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5860 return true; 5861 } 5862 5863 if (hci_stack->gap_tasks_classic != 0){ 5864 hci_run_gap_tasks_classic(); 5865 return true; 5866 } 5867 5868 // start/stop inquiry 5869 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5870 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5871 if (hci_classic_operation_active() == false) 5872 #endif 5873 { 5874 uint8_t duration = hci_stack->inquiry_state; 5875 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5876 if (hci_stack->inquiry_max_period_length != 0){ 5877 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); 5878 } else { 5879 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5880 } 5881 return true; 5882 } 5883 } 5884 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5885 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5886 hci_send_cmd(&hci_inquiry_cancel); 5887 return true; 5888 } 5889 5890 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5891 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5892 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5893 return true; 5894 } 5895 5896 // remote name request 5897 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5898 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5899 if (hci_classic_operation_active() == false) 5900 #endif 5901 { 5902 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5903 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5904 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5905 return true; 5906 } 5907 } 5908 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5909 // Local OOB data 5910 if (hci_stack->classic_read_local_oob_data){ 5911 hci_stack->classic_read_local_oob_data = false; 5912 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5913 hci_send_cmd(&hci_read_local_extended_oob_data); 5914 } else { 5915 hci_send_cmd(&hci_read_local_oob_data); 5916 } 5917 } 5918 #endif 5919 // pairing 5920 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5921 uint8_t state = hci_stack->gap_pairing_state; 5922 uint8_t pin_code[PIN_CODE_LEN]; 5923 switch (state){ 5924 case GAP_PAIRING_STATE_SEND_PIN: 5925 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5926 memset(pin_code, 0, 16); 5927 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5928 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5929 break; 5930 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5931 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5932 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5933 break; 5934 case GAP_PAIRING_STATE_SEND_PASSKEY: 5935 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5936 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5937 break; 5938 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5939 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5940 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5941 break; 5942 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5943 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5944 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5945 break; 5946 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5947 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5948 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5949 break; 5950 default: 5951 break; 5952 } 5953 return true; 5954 } 5955 return false; 5956 } 5957 #endif 5958 5959 #ifdef ENABLE_BLE 5960 5961 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5962 static uint8_t hci_le_num_phys(uint8_t phys){ 5963 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5964 btstack_assert(phys); 5965 return num_bits_set[phys]; 5966 } 5967 #endif 5968 5969 #ifdef ENABLE_LE_CENTRAL 5970 static void hci_le_scan_stop(void){ 5971 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5972 if (hci_le_extended_advertising_supported()) { 5973 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5974 } else 5975 #endif 5976 { 5977 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5978 } 5979 } 5980 5981 static void 5982 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5983 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5984 if (hci_le_extended_advertising_supported()) { 5985 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5986 uint16_t le_connection_scan_interval[3]; 5987 uint16_t le_connection_scan_window[3]; 5988 uint16_t le_connection_interval_min[3]; 5989 uint16_t le_connection_interval_max[3]; 5990 uint16_t le_connection_latency[3]; 5991 uint16_t le_supervision_timeout[3]; 5992 uint16_t le_minimum_ce_length[3]; 5993 uint16_t le_maximum_ce_length[3]; 5994 5995 uint8_t i; 5996 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5997 for (i=0;i<num_phys;i++){ 5998 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5999 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6000 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6001 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6002 le_connection_latency[i] = hci_stack->le_connection_latency; 6003 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6004 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6005 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6006 } 6007 hci_send_cmd(&hci_le_extended_create_connection, 6008 initiator_filter_policy, 6009 hci_stack->le_connection_own_addr_type, // our addr type: 6010 address_type, // peer address type 6011 address, // peer bd addr 6012 hci_stack->le_connection_phys, // initiating PHY 6013 le_connection_scan_interval, // conn scan interval 6014 le_connection_scan_window, // conn scan windows 6015 le_connection_interval_min, // conn interval min 6016 le_connection_interval_max, // conn interval max 6017 le_connection_latency, // conn latency 6018 le_supervision_timeout, // conn latency 6019 le_minimum_ce_length, // min ce length 6020 le_maximum_ce_length // max ce length 6021 ); 6022 } else 6023 #endif 6024 { 6025 hci_send_cmd(&hci_le_create_connection, 6026 hci_stack->le_connection_scan_interval, // conn scan interval 6027 hci_stack->le_connection_scan_window, // conn scan windows 6028 initiator_filter_policy, // don't use whitelist 6029 address_type, // peer address type 6030 address, // peer bd addr 6031 hci_stack->le_connection_own_addr_type, // our addr type: 6032 hci_stack->le_connection_interval_min, // conn interval min 6033 hci_stack->le_connection_interval_max, // conn interval max 6034 hci_stack->le_connection_latency, // conn latency 6035 hci_stack->le_supervision_timeout, // conn latency 6036 hci_stack->le_minimum_ce_length, // min ce length 6037 hci_stack->le_maximum_ce_length // max ce length 6038 ); 6039 } 6040 } 6041 #endif 6042 6043 #ifdef ENABLE_LE_PERIPHERAL 6044 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6045 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6046 uint8_t operation = 0; 6047 if (pos == 0){ 6048 // first fragment or complete data 6049 operation |= 1; 6050 } 6051 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6052 // last fragment or complete data 6053 operation |= 2; 6054 } 6055 return operation; 6056 } 6057 #endif 6058 #endif 6059 6060 static bool hci_run_general_gap_le(void){ 6061 6062 btstack_linked_list_iterator_t lit; 6063 6064 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6065 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6066 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6067 hci_stack->le_resolvable_private_address_update_s = 0; 6068 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6069 return true; 6070 } 6071 #endif 6072 6073 // Phase 1: collect what to stop 6074 6075 #ifdef ENABLE_LE_CENTRAL 6076 bool scanning_stop = false; 6077 bool connecting_stop = false; 6078 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6079 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6080 bool periodic_sync_stop = false; 6081 #endif 6082 #endif 6083 #endif 6084 6085 #ifdef ENABLE_LE_PERIPHERAL 6086 bool advertising_stop = false; 6087 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6088 le_advertising_set_t * advertising_stop_set = NULL; 6089 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6090 bool periodic_advertising_stop = false; 6091 #endif 6092 #endif 6093 #endif 6094 6095 // check if own address changes 6096 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6097 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6098 6099 // check if whitelist needs modification 6100 bool whitelist_modification_pending = false; 6101 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6102 while (btstack_linked_list_iterator_has_next(&lit)){ 6103 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6104 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6105 whitelist_modification_pending = true; 6106 break; 6107 } 6108 } 6109 6110 // check if resolving list needs modification 6111 bool resolving_list_modification_pending = false; 6112 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6113 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6114 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6115 resolving_list_modification_pending = true; 6116 } 6117 #endif 6118 6119 #ifdef ENABLE_LE_CENTRAL 6120 6121 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6122 // check if periodic advertiser list needs modification 6123 bool periodic_list_modification_pending = false; 6124 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6125 while (btstack_linked_list_iterator_has_next(&lit)){ 6126 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6127 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6128 periodic_list_modification_pending = true; 6129 break; 6130 } 6131 } 6132 #endif 6133 6134 // scanning control 6135 if (hci_stack->le_scanning_active) { 6136 // stop if: 6137 // - parameter change required 6138 // - it's disabled 6139 // - whitelist change required but used for scanning 6140 // - resolving list modified 6141 // - own address changes 6142 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6143 if ((hci_stack->le_scanning_param_update) || 6144 !hci_stack->le_scanning_enabled || 6145 (scanning_uses_whitelist && whitelist_modification_pending) || 6146 resolving_list_modification_pending || 6147 random_address_change){ 6148 6149 scanning_stop = true; 6150 } 6151 } 6152 6153 // connecting control 6154 bool connecting_with_whitelist; 6155 switch (hci_stack->le_connecting_state){ 6156 case LE_CONNECTING_DIRECT: 6157 case LE_CONNECTING_WHITELIST: 6158 // stop connecting if: 6159 // - connecting uses white and whitelist modification pending 6160 // - if it got disabled 6161 // - resolving list modified 6162 // - own address changes 6163 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6164 if ((connecting_with_whitelist && whitelist_modification_pending) || 6165 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6166 resolving_list_modification_pending || 6167 random_address_change) { 6168 6169 connecting_stop = true; 6170 } 6171 break; 6172 default: 6173 break; 6174 } 6175 6176 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6177 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6178 // periodic sync control 6179 bool sync_with_advertiser_list; 6180 switch(hci_stack->le_periodic_sync_state){ 6181 case LE_CONNECTING_DIRECT: 6182 case LE_CONNECTING_WHITELIST: 6183 // stop sync if: 6184 // - sync with advertiser list and advertiser list modification pending 6185 // - if it got disabled 6186 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6187 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6188 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6189 periodic_sync_stop = true; 6190 } 6191 break; 6192 default: 6193 break; 6194 } 6195 #endif 6196 #endif 6197 6198 #endif /* ENABLE_LE_CENTRAL */ 6199 6200 #ifdef ENABLE_LE_PERIPHERAL 6201 // le advertisement control 6202 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6203 // stop if: 6204 // - parameter change required 6205 // - random address used in advertising and changes 6206 // - it's disabled 6207 // - whitelist change required but used for advertisement filter policy 6208 // - resolving list modified 6209 // - own address changes 6210 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6211 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6212 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6213 if (advertising_change || 6214 (advertising_uses_random_address && random_address_change) || 6215 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6216 (advertising_uses_whitelist && whitelist_modification_pending) || 6217 resolving_list_modification_pending || 6218 random_address_change) { 6219 6220 advertising_stop = true; 6221 } 6222 } 6223 6224 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6225 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6226 btstack_linked_list_iterator_t it; 6227 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6228 while (btstack_linked_list_iterator_has_next(&it)){ 6229 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6230 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6231 // stop if: 6232 // - parameter change required 6233 // - random address used in connectable advertising and changes 6234 // - it's disabled 6235 // - whitelist change required but used for advertisement filter policy 6236 // - resolving list modified 6237 // - own address changes 6238 // - advertisement set will be removed 6239 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6240 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6241 bool advertising_uses_random_address = 6242 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6243 advertising_connectable; 6244 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6245 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6246 bool advertising_set_random_address_change = 6247 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6248 bool advertising_set_will_be_removed = 6249 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6250 if (advertising_parameter_change || 6251 (advertising_uses_random_address && advertising_set_random_address_change) || 6252 (advertising_enabled == false) || 6253 (advertising_uses_whitelist && whitelist_modification_pending) || 6254 resolving_list_modification_pending || 6255 advertising_set_will_be_removed) { 6256 6257 advertising_stop = true; 6258 advertising_stop_set = advertising_set; 6259 break; 6260 } 6261 } 6262 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6263 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6264 // stop if: 6265 // - it's disabled 6266 // - parameter change required 6267 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6268 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6269 if ((periodic_enabled == false) || periodic_parameter_change){ 6270 periodic_advertising_stop = true; 6271 advertising_stop_set = advertising_set; 6272 } 6273 } 6274 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6275 } 6276 } 6277 #endif 6278 6279 #endif 6280 6281 6282 // Phase 2: stop everything that should be off during modifications 6283 6284 6285 // 2.1 Outgoing connection 6286 #ifdef ENABLE_LE_CENTRAL 6287 if (connecting_stop){ 6288 hci_send_cmd(&hci_le_create_connection_cancel); 6289 return true; 6290 } 6291 #endif 6292 6293 // 2.2 Scanning 6294 #ifdef ENABLE_LE_CENTRAL 6295 if (scanning_stop){ 6296 hci_stack->le_scanning_active = false; 6297 hci_le_scan_stop(); 6298 return true; 6299 } 6300 6301 // 2.3 Periodic Sync 6302 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6303 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6304 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6305 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6306 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6307 return true; 6308 } 6309 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6310 if (periodic_sync_stop){ 6311 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6312 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6313 return true; 6314 } 6315 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6316 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6317 #endif /* ENABLE_LE_CENTRAL */ 6318 6319 // 2.4 Advertising: legacy, extended, periodic 6320 #ifdef ENABLE_LE_PERIPHERAL 6321 if (advertising_stop){ 6322 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6323 if (hci_le_extended_advertising_supported()) { 6324 uint8_t advertising_stop_handle; 6325 if (advertising_stop_set != NULL){ 6326 advertising_stop_handle = advertising_stop_set->advertising_handle; 6327 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6328 } else { 6329 advertising_stop_handle = 0; 6330 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6331 } 6332 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6333 const uint16_t durations[] = { 0 }; 6334 const uint16_t max_events[] = { 0 }; 6335 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6336 } else 6337 #endif 6338 { 6339 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6340 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6341 } 6342 return true; 6343 } 6344 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6345 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6346 if (periodic_advertising_stop){ 6347 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6348 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6349 return true; 6350 } 6351 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6352 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6353 #endif /* ENABLE_LE_PERIPHERAL */ 6354 6355 6356 // Phase 3: modify 6357 6358 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6359 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6360 // GAP Privacy, notify clients upon upcoming random address change 6361 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6362 // notify might cause hci_run to get executed, check if we still can send 6363 gap_privacy_clients_notify(hci_stack->le_random_address); 6364 if (!hci_can_send_command_packet_now()) { 6365 return true; 6366 } 6367 } 6368 6369 // - wait until privacy update completed 6370 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6371 return false; 6372 } 6373 6374 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6375 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6376 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6377 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6378 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6379 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6380 #endif 6381 return true; 6382 } 6383 6384 #ifdef ENABLE_LE_CENTRAL 6385 if (hci_stack->le_scanning_param_update){ 6386 hci_stack->le_scanning_param_update = false; 6387 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6388 if (hci_le_extended_advertising_supported()){ 6389 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6390 uint8_t scan_types[2]; 6391 uint16_t scan_intervals[2]; 6392 uint16_t scan_windows[2]; 6393 6394 uint8_t i; 6395 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6396 for (i=0;i<num_phys;i++){ 6397 scan_types[i] = hci_stack->le_scan_type; 6398 scan_intervals[i] = hci_stack->le_scan_interval; 6399 scan_windows[i] = hci_stack->le_scan_window; 6400 } 6401 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6402 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6403 } else 6404 #endif 6405 { 6406 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6407 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6408 } 6409 return true; 6410 } 6411 #endif 6412 6413 #ifdef ENABLE_LE_PERIPHERAL 6414 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6415 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6416 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6417 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6418 if (hci_le_extended_advertising_supported()){ 6419 // map advertisment type to advertising event properties 6420 uint16_t adv_event_properties = 0; 6421 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6422 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6423 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6424 } 6425 hci_stack->le_advertising_set_in_current_command = 0; 6426 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6427 0, 6428 adv_event_properties, 6429 hci_stack->le_advertisements_interval_min, 6430 hci_stack->le_advertisements_interval_max, 6431 hci_stack->le_advertisements_channel_map, 6432 hci_stack->le_advertisements_own_addr_type, 6433 hci_stack->le_advertisements_direct_address_type, 6434 hci_stack->le_advertisements_direct_address, 6435 hci_stack->le_advertisements_filter_policy, 6436 0x7f, // tx power: no preference 6437 0x01, // primary adv phy: LE 1M 6438 0, // secondary adv max skip 6439 0x01, // secondary adv phy 6440 0, // adv sid 6441 0 // scan request notification 6442 ); 6443 } else 6444 #endif 6445 { 6446 hci_send_cmd(&hci_le_set_advertising_parameters, 6447 hci_stack->le_advertisements_interval_min, 6448 hci_stack->le_advertisements_interval_max, 6449 hci_stack->le_advertisements_type, 6450 hci_stack->le_advertisements_own_addr_type, 6451 hci_stack->le_advertisements_direct_address_type, 6452 hci_stack->le_advertisements_direct_address, 6453 hci_stack->le_advertisements_channel_map, 6454 hci_stack->le_advertisements_filter_policy); 6455 } 6456 return true; 6457 } 6458 6459 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6460 // assumption: only set if extended advertising is supported 6461 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6462 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6463 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6464 return true; 6465 } 6466 #endif 6467 6468 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6469 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6470 uint8_t adv_data_clean[31]; 6471 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6472 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6473 hci_stack->le_advertisements_data_len); 6474 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6475 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6476 if (hci_le_extended_advertising_supported()){ 6477 hci_stack->le_advertising_set_in_current_command = 0; 6478 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6479 } else 6480 #endif 6481 { 6482 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6483 } 6484 return true; 6485 } 6486 6487 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6488 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6489 uint8_t scan_data_clean[31]; 6490 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6491 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6492 hci_stack->le_scan_response_data_len); 6493 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6494 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6495 if (hci_le_extended_advertising_supported()){ 6496 hci_stack->le_advertising_set_in_current_command = 0; 6497 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6498 } else 6499 #endif 6500 { 6501 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6502 } 6503 return true; 6504 } 6505 6506 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6507 if (hci_le_extended_advertising_supported()) { 6508 btstack_linked_list_iterator_t it; 6509 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6510 while (btstack_linked_list_iterator_has_next(&it)){ 6511 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6512 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6513 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6514 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6515 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6516 return true; 6517 } 6518 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6519 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6520 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6521 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6522 advertising_set->advertising_handle, 6523 advertising_set->extended_params.advertising_event_properties, 6524 advertising_set->extended_params.primary_advertising_interval_min, 6525 advertising_set->extended_params.primary_advertising_interval_max, 6526 advertising_set->extended_params.primary_advertising_channel_map, 6527 advertising_set->extended_params.own_address_type, 6528 advertising_set->extended_params.peer_address_type, 6529 advertising_set->extended_params.peer_address, 6530 advertising_set->extended_params.advertising_filter_policy, 6531 advertising_set->extended_params.advertising_tx_power, 6532 advertising_set->extended_params.primary_advertising_phy, 6533 advertising_set->extended_params.secondary_advertising_max_skip, 6534 advertising_set->extended_params.secondary_advertising_phy, 6535 advertising_set->extended_params.advertising_sid, 6536 advertising_set->extended_params.scan_request_notification_enable 6537 ); 6538 return true; 6539 } 6540 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6541 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6542 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6543 return true; 6544 } 6545 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6546 uint16_t pos = advertising_set->adv_data_pos; 6547 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6548 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6549 if ((operation & 0x02) != 0){ 6550 // last fragment or complete data 6551 operation |= 2; 6552 advertising_set->adv_data_pos = 0; 6553 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6554 } else { 6555 advertising_set->adv_data_pos += data_to_upload; 6556 } 6557 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6558 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6559 return true; 6560 } 6561 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6562 uint16_t pos = advertising_set->scan_data_pos; 6563 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6564 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6565 if ((operation & 0x02) != 0){ 6566 advertising_set->scan_data_pos = 0; 6567 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6568 } else { 6569 advertising_set->scan_data_pos += data_to_upload; 6570 } 6571 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6572 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6573 return true; 6574 } 6575 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6576 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6577 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6578 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6579 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6580 advertising_set->advertising_handle, 6581 advertising_set->periodic_params.periodic_advertising_interval_min, 6582 advertising_set->periodic_params.periodic_advertising_interval_max, 6583 advertising_set->periodic_params.periodic_advertising_properties); 6584 return true; 6585 } 6586 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6587 uint16_t pos = advertising_set->periodic_data_pos; 6588 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6589 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6590 if ((operation & 0x02) != 0){ 6591 // last fragment or complete data 6592 operation |= 2; 6593 advertising_set->periodic_data_pos = 0; 6594 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6595 } else { 6596 advertising_set->periodic_data_pos += data_to_upload; 6597 } 6598 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6599 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6600 return true; 6601 } 6602 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6603 } 6604 } 6605 #endif 6606 6607 #endif 6608 6609 #ifdef ENABLE_LE_CENTRAL 6610 // if connect with whitelist was active and is not cancelled yet, wait until next time 6611 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6612 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6613 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6614 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6615 #endif 6616 #endif 6617 6618 // LE Whitelist Management 6619 if (whitelist_modification_pending){ 6620 // add/remove entries 6621 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6622 while (btstack_linked_list_iterator_has_next(&lit)){ 6623 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6624 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6625 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6626 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6627 bd_addr_type_t address_type = entry->address_type; 6628 bd_addr_t address; 6629 memcpy(address, entry->address, 6); 6630 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6631 // remove from whitelist if not scheduled for re-addition 6632 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6633 btstack_memory_whitelist_entry_free(entry); 6634 } 6635 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6636 return true; 6637 } 6638 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6639 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6640 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6641 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6642 return true; 6643 } 6644 } 6645 } 6646 6647 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6648 // LE Resolving List Management 6649 if (resolving_list_modification_pending) { 6650 uint16_t i; 6651 uint8_t null_16[16]; 6652 uint8_t local_irk_flipped[16]; 6653 const uint8_t *local_irk; 6654 switch (hci_stack->le_resolving_list_state) { 6655 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6656 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6657 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6658 return true; 6659 case LE_RESOLVING_LIST_READ_SIZE: 6660 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6661 hci_send_cmd(&hci_le_read_resolving_list_size); 6662 return true; 6663 case LE_RESOLVING_LIST_SEND_CLEAR: 6664 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6665 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6666 sizeof(hci_stack->le_resolving_list_add_entries)); 6667 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6668 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6669 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6670 sizeof(hci_stack->le_resolving_list_remove_entries)); 6671 hci_send_cmd(&hci_le_clear_resolving_list); 6672 return true; 6673 case LE_RESOLVING_LIST_SET_IRK: 6674 // set IRK used by RPA for undirected advertising 6675 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6676 local_irk = gap_get_persistent_irk(); 6677 reverse_128(local_irk, local_irk_flipped); 6678 memset(null_16, 0, sizeof(null_16)); 6679 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6680 null_16, local_irk_flipped); 6681 return true; 6682 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6683 // first remove old entries 6684 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6685 uint8_t offset = i >> 3; 6686 uint8_t mask = 1 << (i & 7); 6687 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6688 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6689 bd_addr_t peer_identity_addreses; 6690 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6691 sm_key_t peer_irk; 6692 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6693 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6694 6695 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6696 // trigger whitelist entry 'update' (work around for controller bug) 6697 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6698 while (btstack_linked_list_iterator_has_next(&lit)) { 6699 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6700 if (entry->address_type != peer_identity_addr_type) continue; 6701 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6702 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6703 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6704 } 6705 #endif 6706 6707 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6708 peer_identity_addreses); 6709 return true; 6710 } 6711 6712 // then add new entries 6713 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6714 uint8_t offset = i >> 3; 6715 uint8_t mask = 1 << (i & 7); 6716 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6717 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6718 bd_addr_t peer_identity_addreses; 6719 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6720 sm_key_t peer_irk; 6721 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6722 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6723 if (btstack_is_null(peer_irk, 16)) continue; 6724 local_irk = gap_get_persistent_irk(); 6725 // command uses format specifier 'P' that stores 16-byte value without flip 6726 uint8_t peer_irk_flipped[16]; 6727 reverse_128(local_irk, local_irk_flipped); 6728 reverse_128(peer_irk, peer_irk_flipped); 6729 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6730 peer_irk_flipped, local_irk_flipped); 6731 return true; 6732 } 6733 6734 // finally, set privacy mode 6735 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6736 uint8_t offset = i >> 3; 6737 uint8_t mask = 1 << (i & 7); 6738 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6739 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6740 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6741 // Network Privacy Mode is default 6742 continue; 6743 } 6744 bd_addr_t peer_identity_address; 6745 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6746 sm_key_t peer_irk; 6747 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6748 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6749 if (btstack_is_null(peer_irk, 16)) continue; 6750 // command uses format specifier 'P' that stores 16-byte value without flip 6751 uint8_t peer_irk_flipped[16]; 6752 reverse_128(peer_irk, peer_irk_flipped); 6753 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6754 return true; 6755 } 6756 break; 6757 6758 default: 6759 break; 6760 } 6761 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6762 } 6763 #endif 6764 6765 #ifdef ENABLE_LE_CENTRAL 6766 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6767 // LE Whitelist Management 6768 if (periodic_list_modification_pending){ 6769 // add/remove entries 6770 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6771 while (btstack_linked_list_iterator_has_next(&lit)){ 6772 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6773 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6774 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6775 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6776 return true; 6777 } 6778 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6779 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6780 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6781 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6782 return true; 6783 } 6784 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6785 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6786 btstack_memory_periodic_advertiser_list_entry_free(entry); 6787 } 6788 } 6789 } 6790 #endif 6791 #endif 6792 6793 #ifdef ENABLE_LE_CENTRAL 6794 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6795 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6796 if (hci_stack->le_past_set_default_params){ 6797 hci_stack->le_past_set_default_params = false; 6798 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6799 hci_stack->le_past_mode, 6800 hci_stack->le_past_skip, 6801 hci_stack->le_past_sync_timeout, 6802 hci_stack->le_past_cte_type); 6803 return true; 6804 } 6805 #endif 6806 #endif 6807 #endif 6808 6809 // post-pone all actions until stack is fully working 6810 if (hci_stack->state != HCI_STATE_WORKING) return false; 6811 6812 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6813 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6814 6815 // Phase 4: restore state 6816 6817 #ifdef ENABLE_LE_CENTRAL 6818 // re-start scanning 6819 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6820 hci_stack->le_scanning_active = true; 6821 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6822 if (hci_le_extended_advertising_supported()){ 6823 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6824 } else 6825 #endif 6826 { 6827 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6828 } 6829 return true; 6830 } 6831 #endif 6832 6833 #ifdef ENABLE_LE_CENTRAL 6834 // re-start connecting 6835 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6836 bd_addr_t null_addr; 6837 memset(null_addr, 0, 6); 6838 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6839 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6840 hci_send_le_create_connection(1, 0, null_addr); 6841 return true; 6842 } 6843 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6844 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6845 switch(hci_stack->le_periodic_sync_request){ 6846 case LE_CONNECTING_DIRECT: 6847 case LE_CONNECTING_WHITELIST: 6848 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6849 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6850 hci_stack->le_periodic_sync_options, 6851 hci_stack->le_periodic_sync_advertising_sid, 6852 hci_stack->le_periodic_sync_advertiser_address_type, 6853 hci_stack->le_periodic_sync_advertiser_address, 6854 hci_stack->le_periodic_sync_skip, 6855 hci_stack->le_periodic_sync_timeout, 6856 hci_stack->le_periodic_sync_cte_type); 6857 return true; 6858 default: 6859 break; 6860 } 6861 } 6862 #endif 6863 #endif 6864 6865 #ifdef ENABLE_LE_PERIPHERAL 6866 // re-start advertising 6867 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6868 // check if advertisements should be enabled given 6869 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6870 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6871 6872 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6873 if (hci_le_extended_advertising_supported()){ 6874 const uint8_t advertising_handles[] = { 0 }; 6875 const uint16_t durations[] = { 0 }; 6876 const uint16_t max_events[] = { 0 }; 6877 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6878 } else 6879 #endif 6880 { 6881 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6882 } 6883 return true; 6884 } 6885 6886 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6887 if (hci_le_extended_advertising_supported()) { 6888 btstack_linked_list_iterator_t it; 6889 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6890 while (btstack_linked_list_iterator_has_next(&it)) { 6891 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6892 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6893 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6894 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6895 const uint16_t durations[] = { advertising_set->enable_timeout }; 6896 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6897 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6898 return true; 6899 } 6900 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6901 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6902 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6903 uint8_t enable = 1; 6904 if (advertising_set->periodic_include_adi){ 6905 enable |= 2; 6906 } 6907 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6908 return true; 6909 } 6910 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6911 } 6912 } 6913 #endif 6914 #endif 6915 6916 return false; 6917 } 6918 6919 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6920 static bool hci_run_iso_tasks(void){ 6921 btstack_linked_list_iterator_t it; 6922 6923 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6924 return false; 6925 } 6926 6927 // BIG 6928 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6929 while (btstack_linked_list_iterator_has_next(&it)){ 6930 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6931 switch (big->state){ 6932 case LE_AUDIO_BIG_STATE_CREATE: 6933 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6934 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6935 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6936 hci_send_cmd(&hci_le_create_big, 6937 big->params->big_handle, 6938 big->params->advertising_handle, 6939 big->params->num_bis, 6940 big->params->sdu_interval_us, 6941 big->params->max_sdu, 6942 big->params->max_transport_latency_ms, 6943 big->params->rtn, 6944 big->params->phy, 6945 big->params->packing, 6946 big->params->framing, 6947 big->params->encryption, 6948 big->params->broadcast_code); 6949 return true; 6950 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6951 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6952 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); 6953 return true; 6954 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6955 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6956 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6957 return true; 6958 case LE_AUDIO_BIG_STATE_TERMINATE: 6959 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6960 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6961 return true; 6962 default: 6963 break; 6964 } 6965 } 6966 6967 // BIG Sync 6968 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6969 while (btstack_linked_list_iterator_has_next(&it)){ 6970 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6971 switch (big_sync->state){ 6972 case LE_AUDIO_BIG_STATE_CREATE: 6973 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6974 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6975 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6976 hci_send_cmd(&hci_le_big_create_sync, 6977 big_sync->params->big_handle, 6978 big_sync->params->sync_handle, 6979 big_sync->params->encryption, 6980 big_sync->params->broadcast_code, 6981 big_sync->params->mse, 6982 big_sync->params->big_sync_timeout_10ms, 6983 big_sync->params->num_bis, 6984 big_sync->params->bis_indices); 6985 return true; 6986 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6987 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6988 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); 6989 return true; 6990 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6991 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6992 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6993 return true; 6994 case LE_AUDIO_BIG_STATE_TERMINATE: 6995 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6996 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6997 return true; 6998 default: 6999 break; 7000 } 7001 } 7002 7003 // CIG 7004 bool cig_active; 7005 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7006 while (btstack_linked_list_iterator_has_next(&it)) { 7007 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7008 uint8_t i; 7009 // Set CIG Parameters 7010 uint8_t cis_id[MAX_NR_CIS]; 7011 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7012 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7013 uint8_t phy_c_to_p[MAX_NR_CIS]; 7014 uint8_t phy_p_to_c[MAX_NR_CIS]; 7015 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7016 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7017 switch (cig->state) { 7018 case LE_AUDIO_CIG_STATE_CREATE: 7019 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7020 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7021 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7022 le_audio_cig_params_t * params = cig->params; 7023 for (i = 0; i < params->num_cis; i++) { 7024 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7025 cis_id[i] = cis_params->cis_id; 7026 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7027 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7028 phy_c_to_p[i] = cis_params->phy_c_to_p; 7029 phy_p_to_c[i] = cis_params->phy_p_to_c; 7030 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7031 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7032 } 7033 hci_send_cmd(&hci_le_set_cig_parameters, 7034 cig->cig_id, 7035 params->sdu_interval_c_to_p, 7036 params->sdu_interval_p_to_c, 7037 params->worst_case_sca, 7038 params->packing, 7039 params->framing, 7040 params->max_transport_latency_c_to_p, 7041 params->max_transport_latency_p_to_c, 7042 params->num_cis, 7043 cis_id, 7044 max_sdu_c_to_p, 7045 max_sdu_p_to_c, 7046 phy_c_to_p, 7047 phy_p_to_c, 7048 rtn_c_to_p, 7049 rtn_p_to_c 7050 ); 7051 return true; 7052 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7053 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7054 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7055 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7056 for (i=0;i<cig->num_cis;i++){ 7057 cig->cis_setup_active[i] = true; 7058 } 7059 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7060 return true; 7061 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7062 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7063 // find next path to setup 7064 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7065 if (cig->cis_established[cis_index] == false) { 7066 continue; 7067 } 7068 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7069 bool setup = true; 7070 if (cis_direction == 0){ 7071 // 0 - input - host to controller 7072 // we are central => central to peripheral 7073 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7074 } else { 7075 // 1 - output - controller to host 7076 // we are central => peripheral to central 7077 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7078 } 7079 if (setup){ 7080 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7081 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7082 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7083 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); 7084 return true; 7085 } 7086 cig->state_vars.next_cis++; 7087 } 7088 // emit done 7089 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7090 break; 7091 case LE_AUDIO_CIG_STATE_REMOVE: 7092 // check if CIG Active 7093 cig_active = false; 7094 for (i = 0; i < cig->num_cis; i++) { 7095 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7096 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7097 if (stream != NULL){ 7098 cig_active = true; 7099 break; 7100 } 7101 } 7102 } 7103 if (cig_active == false){ 7104 btstack_linked_list_iterator_remove(&it); 7105 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7106 return true; 7107 } 7108 default: 7109 break; 7110 } 7111 } 7112 7113 // CIS Accept/Reject/Setup ISO Path/Close 7114 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7115 while (btstack_linked_list_iterator_has_next(&it)) { 7116 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7117 hci_con_handle_t con_handle; 7118 switch (iso_stream->state){ 7119 case HCI_ISO_STREAM_W2_ACCEPT: 7120 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7121 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7122 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7123 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7124 return true; 7125 case HCI_ISO_STREAM_W2_REJECT: 7126 con_handle = iso_stream->cis_handle; 7127 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7128 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7129 hci_iso_stream_finalize(iso_stream); 7130 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7131 return true; 7132 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7133 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7134 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7135 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7136 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); 7137 break; 7138 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7139 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7140 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7141 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7142 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); 7143 break; 7144 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7145 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7146 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7147 break; 7148 default: 7149 break; 7150 } 7151 } 7152 7153 return false; 7154 } 7155 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7156 #endif 7157 7158 static bool hci_run_general_pending_commands(void){ 7159 btstack_linked_item_t * it; 7160 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7161 hci_connection_t * connection = (hci_connection_t *) it; 7162 7163 switch(connection->state){ 7164 case SEND_CREATE_CONNECTION: 7165 switch(connection->address_type){ 7166 #ifdef ENABLE_CLASSIC 7167 case BD_ADDR_TYPE_ACL: 7168 log_info("sending hci_create_connection"); 7169 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7170 break; 7171 #endif 7172 default: 7173 #ifdef ENABLE_BLE 7174 #ifdef ENABLE_LE_CENTRAL 7175 log_info("sending hci_le_create_connection"); 7176 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7177 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7178 hci_send_le_create_connection(0, connection->address_type, connection->address); 7179 connection->state = SENT_CREATE_CONNECTION; 7180 #endif 7181 #endif 7182 break; 7183 } 7184 return true; 7185 7186 #ifdef ENABLE_CLASSIC 7187 case RECEIVED_CONNECTION_REQUEST: 7188 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7189 log_info("sending hci_accept_connection_request"); 7190 connection->state = ACCEPTED_CONNECTION_REQUEST; 7191 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7192 return true; 7193 } 7194 break; 7195 #endif 7196 case SEND_DISCONNECT: 7197 connection->state = SENT_DISCONNECT; 7198 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7199 return true; 7200 7201 default: 7202 break; 7203 } 7204 7205 // no further commands if connection is about to get shut down 7206 if (connection->state == SENT_DISCONNECT) continue; 7207 7208 #ifdef ENABLE_CLASSIC 7209 7210 // Handling link key request requires remote supported features 7211 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7212 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7213 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7214 7215 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7216 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7217 if (have_link_key && security_level_sufficient){ 7218 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7219 } else { 7220 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7221 } 7222 return true; 7223 } 7224 7225 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7226 log_info("denying to pin request"); 7227 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7228 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7229 return true; 7230 } 7231 7232 // security assessment requires remote features 7233 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7234 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7235 hci_ssp_assess_security_on_io_cap_request(connection); 7236 // 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 7237 } 7238 7239 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7240 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7241 // set authentication requirements: 7242 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7243 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7244 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7245 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7246 authreq |= 1; 7247 } 7248 bool bonding = hci_stack->bondable; 7249 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7250 // if we have received IO Cap Response, we're in responder role 7251 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7252 if (bonding && !remote_bonding){ 7253 log_info("Remote not bonding, dropping local flag"); 7254 bonding = false; 7255 } 7256 } 7257 if (bonding){ 7258 if (connection->bonding_flags & BONDING_DEDICATED){ 7259 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7260 } else { 7261 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7262 } 7263 } 7264 uint8_t have_oob_data = 0; 7265 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7266 if (connection->classic_oob_c_192 != NULL){ 7267 have_oob_data |= 1; 7268 } 7269 if (connection->classic_oob_c_256 != NULL){ 7270 have_oob_data |= 2; 7271 } 7272 #endif 7273 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7274 return true; 7275 } 7276 7277 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7278 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7279 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7280 return true; 7281 } 7282 7283 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7284 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7285 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7286 const uint8_t zero[16] = { 0 }; 7287 const uint8_t * r_192 = zero; 7288 const uint8_t * c_192 = zero; 7289 const uint8_t * r_256 = zero; 7290 const uint8_t * c_256 = zero; 7291 // verify P-256 OOB 7292 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7293 c_256 = connection->classic_oob_c_256; 7294 if (connection->classic_oob_r_256 != NULL) { 7295 r_256 = connection->classic_oob_r_256; 7296 } 7297 } 7298 // verify P-192 OOB 7299 if ((connection->classic_oob_c_192 != NULL)) { 7300 c_192 = connection->classic_oob_c_192; 7301 if (connection->classic_oob_r_192 != NULL) { 7302 r_192 = connection->classic_oob_r_192; 7303 } 7304 } 7305 7306 // assess security 7307 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7308 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7309 if (need_level_4 && !can_reach_level_4){ 7310 log_info("Level 4 required, but not possible -> abort"); 7311 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7312 // send oob negative reply 7313 c_256 = NULL; 7314 c_192 = NULL; 7315 } 7316 7317 // Reply 7318 if (c_256 != zero) { 7319 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7320 } else if (c_192 != zero){ 7321 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7322 } else { 7323 hci_stack->classic_oob_con_handle = connection->con_handle; 7324 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7325 } 7326 return true; 7327 } 7328 #endif 7329 7330 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7331 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7332 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7333 return true; 7334 } 7335 7336 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7337 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7338 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7339 return true; 7340 } 7341 7342 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7343 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7344 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7345 return true; 7346 } 7347 7348 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7349 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7350 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7351 connection->state = SENT_DISCONNECT; 7352 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7353 return true; 7354 } 7355 7356 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7357 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7358 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7359 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7360 return true; 7361 } 7362 7363 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7364 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7365 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7366 return true; 7367 } 7368 7369 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7370 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7371 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7372 return true; 7373 } 7374 7375 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7376 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7377 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7378 return true; 7379 } 7380 7381 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7382 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7383 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7384 return true; 7385 } 7386 7387 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7388 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7389 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7390 return true; 7391 } 7392 #endif 7393 7394 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7395 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7396 #ifdef ENABLE_CLASSIC 7397 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7398 #endif 7399 if (connection->state != SENT_DISCONNECT){ 7400 connection->state = SENT_DISCONNECT; 7401 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7402 return true; 7403 } 7404 } 7405 7406 #ifdef ENABLE_CLASSIC 7407 uint16_t sniff_min_interval; 7408 switch (connection->sniff_min_interval){ 7409 case 0: 7410 break; 7411 case 0xffff: 7412 connection->sniff_min_interval = 0; 7413 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7414 return true; 7415 default: 7416 sniff_min_interval = connection->sniff_min_interval; 7417 connection->sniff_min_interval = 0; 7418 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7419 return true; 7420 } 7421 7422 if (connection->sniff_subrating_max_latency != 0xffff){ 7423 uint16_t max_latency = connection->sniff_subrating_max_latency; 7424 connection->sniff_subrating_max_latency = 0; 7425 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7426 return true; 7427 } 7428 7429 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7430 uint8_t service_type = (uint8_t) connection->qos_service_type; 7431 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7432 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); 7433 return true; 7434 } 7435 7436 if (connection->request_role != HCI_ROLE_INVALID){ 7437 hci_role_t role = connection->request_role; 7438 connection->request_role = HCI_ROLE_INVALID; 7439 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7440 return true; 7441 } 7442 #endif 7443 7444 if (connection->gap_connection_tasks != 0){ 7445 #ifdef ENABLE_CLASSIC 7446 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7447 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7448 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7449 return true; 7450 } 7451 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7452 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7453 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7454 return true; 7455 } 7456 #endif 7457 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7458 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7459 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7460 return true; 7461 } 7462 #ifdef ENABLE_BLE 7463 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7464 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7465 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7466 return true; 7467 } 7468 #endif 7469 } 7470 7471 #ifdef ENABLE_BLE 7472 switch (connection->le_con_parameter_update_state){ 7473 // response to L2CAP CON PARAMETER UPDATE REQUEST 7474 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7475 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7476 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7477 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7478 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7479 return true; 7480 case CON_PARAMETER_UPDATE_REPLY: 7481 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7482 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7483 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7484 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7485 return true; 7486 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7487 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7488 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7489 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7490 return true; 7491 default: 7492 break; 7493 } 7494 if (connection->le_phy_update_all_phys != 0xffu){ 7495 uint8_t all_phys = connection->le_phy_update_all_phys; 7496 connection->le_phy_update_all_phys = 0xff; 7497 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); 7498 return true; 7499 } 7500 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7501 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7502 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7503 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7504 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7505 return true; 7506 } 7507 if (connection->le_past_advertising_handle != 0xff){ 7508 uint8_t advertising_handle = connection->le_past_advertising_handle; 7509 connection->le_past_advertising_handle = 0xff; 7510 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7511 return true; 7512 } 7513 #endif 7514 #endif 7515 } 7516 return false; 7517 } 7518 7519 static void hci_run(void){ 7520 7521 // stack state sub statemachines 7522 switch (hci_stack->state) { 7523 case HCI_STATE_INITIALIZING: 7524 hci_initializing_run(); 7525 break; 7526 case HCI_STATE_HALTING: 7527 hci_halting_run(); 7528 break; 7529 case HCI_STATE_FALLING_ASLEEP: 7530 hci_falling_asleep_run(); 7531 break; 7532 default: 7533 break; 7534 } 7535 7536 // allow to run after initialization to working transition 7537 if (hci_stack->state != HCI_STATE_WORKING){ 7538 return; 7539 } 7540 7541 bool done; 7542 7543 // send continuation fragments first, as they block the prepared packet buffer 7544 done = hci_run_acl_fragments(); 7545 if (done) return; 7546 7547 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7548 done = hci_run_iso_fragments(); 7549 if (done) return; 7550 #endif 7551 7552 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7553 // send host num completed packets next as they don't require num_cmd_packets > 0 7554 if (!hci_can_send_comand_packet_transport()) return; 7555 if (hci_stack->host_completed_packets){ 7556 hci_host_num_completed_packets(); 7557 return; 7558 } 7559 #endif 7560 7561 if (!hci_can_send_command_packet_now()) return; 7562 7563 // global/non-connection oriented commands 7564 7565 7566 #ifdef ENABLE_CLASSIC 7567 // general gap classic 7568 done = hci_run_general_gap_classic(); 7569 if (done) return; 7570 #endif 7571 7572 #ifdef ENABLE_BLE 7573 // general gap le 7574 done = hci_run_general_gap_le(); 7575 if (done) return; 7576 7577 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7578 // ISO related tasks, e.g. BIG create/terminate/sync 7579 done = hci_run_iso_tasks(); 7580 if (done) return; 7581 #endif 7582 #endif 7583 7584 // send pending HCI commands 7585 hci_run_general_pending_commands(); 7586 } 7587 7588 #ifdef ENABLE_CLASSIC 7589 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7590 // bits 6-9 are 'don't use' 7591 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7592 7593 // restrict packet types to local and remote supported 7594 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7595 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7596 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7597 } 7598 #endif 7599 7600 // funnel for sending cmd packet using single outgoing buffer 7601 static uint8_t hci_send_prepared_cmd_packet(void) { 7602 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7603 // cache opcode 7604 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7605 // get size 7606 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7607 // send packet 7608 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7609 // release packet buffer on error or for synchronous transport implementations 7610 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7611 hci_release_packet_buffer(); 7612 } 7613 return status; 7614 } 7615 7616 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7617 // house-keeping 7618 7619 #ifdef ENABLE_CLASSIC 7620 bd_addr_t addr; 7621 hci_connection_t * conn; 7622 #endif 7623 #ifdef ENABLE_LE_CENTRAL 7624 uint8_t initiator_filter_policy; 7625 #endif 7626 7627 uint16_t opcode = little_endian_read_16(packet, 0); 7628 switch (opcode) { 7629 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7630 hci_stack->loopback_mode = packet[3]; 7631 break; 7632 7633 #ifdef ENABLE_CLASSIC 7634 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7635 reverse_bd_addr(&packet[3], addr); 7636 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7637 7638 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7639 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7640 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7641 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7642 } 7643 7644 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7645 if (!conn) { 7646 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7647 if (!conn) { 7648 // notify client that alloc failed 7649 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7650 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7651 } 7652 conn->state = SEND_CREATE_CONNECTION; 7653 } 7654 7655 log_info("conn state %u", conn->state); 7656 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7657 switch (conn->state) { 7658 // if connection active exists 7659 case OPEN: 7660 // and OPEN, emit connection complete command 7661 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7662 // packet not sent to controller 7663 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7664 case RECEIVED_DISCONNECTION_COMPLETE: 7665 // create connection triggered in disconnect complete event, let's do it now 7666 break; 7667 case SEND_CREATE_CONNECTION: 7668 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7669 if (hci_classic_operation_active()){ 7670 return ERROR_CODE_SUCCESS; 7671 } 7672 #endif 7673 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7674 break; 7675 default: 7676 // otherwise, just ignore as it is already in the open process 7677 // packet not sent to controller 7678 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7679 } 7680 conn->state = SENT_CREATE_CONNECTION; 7681 7682 // track outgoing connection 7683 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7684 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7685 break; 7686 7687 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7688 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7689 if (conn == NULL) { 7690 // neither SCO nor ACL connection for con handle 7691 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7692 } else { 7693 uint16_t remote_supported_sco_packets; 7694 switch (conn->address_type){ 7695 case BD_ADDR_TYPE_ACL: 7696 // assert SCO connection does not exit 7697 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7698 return ERROR_CODE_COMMAND_DISALLOWED; 7699 } 7700 // cache remote sco packet types 7701 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7702 7703 // allocate connection struct 7704 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7705 HCI_ROLE_MASTER); 7706 if (!conn) { 7707 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7708 } 7709 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7710 break; 7711 case BD_ADDR_TYPE_SCO: 7712 // update of existing SCO connection 7713 break; 7714 default: 7715 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7716 } 7717 } 7718 7719 // conn refers to hci connection of type sco now 7720 7721 conn->state = SENT_CREATE_CONNECTION; 7722 7723 // track outgoing connection to handle command status with error 7724 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7725 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7726 7727 // setup_synchronous_connection? Voice setting at offset 22 7728 // TODO: compare to current setting if sco connection already active 7729 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7730 7731 // derive sco payload length from packet types 7732 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7733 break; 7734 7735 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7736 // get SCO connection 7737 reverse_bd_addr(&packet[3], addr); 7738 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7739 if (conn == NULL){ 7740 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7741 } 7742 7743 conn->state = ACCEPTED_CONNECTION_REQUEST; 7744 7745 // track outgoing connection to handle command status with error 7746 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7747 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7748 7749 // accept_synchronous_connection? Voice setting at offset 18 7750 // TODO: compare to current setting if sco connection already active 7751 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7752 7753 // derive sco payload length from packet types 7754 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7755 break; 7756 #endif 7757 7758 #ifdef ENABLE_BLE 7759 #ifdef ENABLE_LE_CENTRAL 7760 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7761 // white list used? 7762 initiator_filter_policy = packet[7]; 7763 switch (initiator_filter_policy) { 7764 case 0: 7765 // whitelist not used 7766 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7767 break; 7768 case 1: 7769 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7770 break; 7771 default: 7772 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7773 break; 7774 } 7775 // track outgoing connection 7776 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7777 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7778 break; 7779 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7780 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7781 // white list used? 7782 initiator_filter_policy = packet[3]; 7783 switch (initiator_filter_policy) { 7784 case 0: 7785 // whitelist not used 7786 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7787 break; 7788 case 1: 7789 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7790 break; 7791 default: 7792 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7793 break; 7794 } 7795 // track outgoing connection 7796 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7797 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7798 break; 7799 #endif 7800 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7801 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7802 break; 7803 #endif 7804 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7805 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7806 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7807 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7808 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7809 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7810 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7811 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7812 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7813 case HCI_OPCODE_HCI_LE_READ_PHY: 7814 case HCI_OPCODE_HCI_LE_SET_PHY: 7815 // conection handle is first command parameter 7816 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7817 break; 7818 #endif 7819 #endif /* ENABLE_BLE */ 7820 default: 7821 break; 7822 } 7823 7824 hci_stack->num_cmd_packets--; 7825 7826 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7827 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7828 uint8_t status; 7829 if (err == 0){ 7830 status = ERROR_CODE_SUCCESS; 7831 } else { 7832 status = ERROR_CODE_HARDWARE_FAILURE; 7833 } 7834 return status; 7835 } 7836 7837 // disconnect because of security block 7838 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7839 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7840 if (!connection) return; 7841 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7842 } 7843 7844 7845 // Configure Secure Simple Pairing 7846 7847 #ifdef ENABLE_CLASSIC 7848 7849 // enable will enable SSP during init 7850 void gap_ssp_set_enable(int enable){ 7851 hci_stack->ssp_enable = enable; 7852 } 7853 7854 static int hci_local_ssp_activated(void){ 7855 return gap_ssp_supported() && hci_stack->ssp_enable; 7856 } 7857 7858 // if set, BTstack will respond to io capability request using authentication requirement 7859 void gap_ssp_set_io_capability(int io_capability){ 7860 hci_stack->ssp_io_capability = io_capability; 7861 } 7862 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7863 hci_stack->ssp_authentication_requirement = authentication_requirement; 7864 } 7865 7866 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7867 void gap_ssp_set_auto_accept(int auto_accept){ 7868 hci_stack->ssp_auto_accept = auto_accept; 7869 } 7870 7871 void gap_secure_connections_enable(bool enable){ 7872 hci_stack->secure_connections_enable = enable; 7873 } 7874 bool gap_secure_connections_active(void){ 7875 return hci_stack->secure_connections_active; 7876 } 7877 7878 #endif 7879 7880 // va_list part of hci_send_cmd 7881 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7882 if (!hci_can_send_command_packet_now()){ 7883 log_error("hci_send_cmd called but cannot send packet now"); 7884 return ERROR_CODE_COMMAND_DISALLOWED; 7885 } 7886 7887 hci_reserve_packet_buffer(); 7888 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7889 return hci_send_prepared_cmd_packet(); 7890 } 7891 7892 /** 7893 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7894 */ 7895 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7896 va_list argptr; 7897 va_start(argptr, cmd); 7898 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7899 va_end(argptr); 7900 return status; 7901 } 7902 7903 // Create various non-HCI events. 7904 // TODO: generalize, use table similar to hci_create_command 7905 7906 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7907 // dump packet 7908 if (dump) { 7909 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7910 } 7911 7912 // dispatch to all event handlers 7913 btstack_linked_list_iterator_t it; 7914 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7915 while (btstack_linked_list_iterator_has_next(&it)){ 7916 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7917 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7918 } 7919 } 7920 7921 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7922 if (!hci_stack->acl_packet_handler) return; 7923 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7924 } 7925 7926 #ifdef ENABLE_CLASSIC 7927 static void hci_notify_if_sco_can_send_now(void){ 7928 // notify SCO sender if waiting 7929 if (!hci_stack->sco_waiting_for_can_send_now) return; 7930 if (hci_can_send_sco_packet_now()){ 7931 hci_stack->sco_waiting_for_can_send_now = 0; 7932 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7933 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7934 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7935 } 7936 } 7937 7938 // parsing end emitting has been merged to reduce code size 7939 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7940 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7941 7942 uint8_t * eir_data; 7943 ad_context_t context; 7944 const uint8_t * name; 7945 uint8_t name_len; 7946 7947 if (size < 3) return; 7948 7949 int event_type = hci_event_packet_get_type(packet); 7950 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7951 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7952 7953 switch (event_type){ 7954 case HCI_EVENT_INQUIRY_RESULT: 7955 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7956 if (size != (3 + (num_responses * 14))) return; 7957 break; 7958 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7959 if (size != 257) return; 7960 if (num_responses != 1) return; 7961 break; 7962 default: 7963 return; 7964 } 7965 7966 // event[1] is set at the end 7967 int i; 7968 for (i=0; i<num_responses;i++){ 7969 memset(event, 0, sizeof(event)); 7970 event[0] = GAP_EVENT_INQUIRY_RESULT; 7971 uint8_t event_size = 27; // if name is not set by EIR 7972 7973 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7974 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7975 (void)memcpy(&event[9], 7976 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7977 3); // class of device 7978 (void)memcpy(&event[12], 7979 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7980 2); // clock offset 7981 7982 switch (event_type){ 7983 case HCI_EVENT_INQUIRY_RESULT: 7984 // 14,15,16,17 = 0, size 18 7985 break; 7986 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7987 event[14] = 1; 7988 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7989 // 16,17 = 0, size 18 7990 break; 7991 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7992 event[14] = 1; 7993 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7994 // EIR packets only contain a single inquiry response 7995 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7996 name = NULL; 7997 // Iterate over EIR data 7998 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7999 uint8_t data_type = ad_iterator_get_data_type(&context); 8000 uint8_t data_size = ad_iterator_get_data_len(&context); 8001 const uint8_t * data = ad_iterator_get_data(&context); 8002 // Prefer Complete Local Name over Shortened Local Name 8003 switch (data_type){ 8004 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8005 if (name) continue; 8006 /* fall through */ 8007 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8008 name = data; 8009 name_len = data_size; 8010 break; 8011 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8012 if (data_size != 8) break; 8013 event[16] = 1; 8014 memcpy(&event[17], data, 8); 8015 break; 8016 default: 8017 break; 8018 } 8019 } 8020 if (name){ 8021 event[25] = 1; 8022 // truncate name if needed 8023 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8024 event[26] = len; 8025 (void)memcpy(&event[27], name, len); 8026 event_size += len; 8027 } 8028 break; 8029 default: 8030 return; 8031 } 8032 event[1] = event_size - 2; 8033 hci_emit_event(event, event_size, 1); 8034 } 8035 } 8036 #endif 8037 8038 void hci_emit_state(void){ 8039 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8040 uint8_t event[3]; 8041 event[0] = BTSTACK_EVENT_STATE; 8042 event[1] = sizeof(event) - 2u; 8043 event[2] = hci_stack->state; 8044 hci_emit_event(event, sizeof(event), 1); 8045 } 8046 8047 #ifdef ENABLE_CLASSIC 8048 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8049 uint8_t event[13]; 8050 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8051 event[1] = sizeof(event) - 2; 8052 event[2] = status; 8053 little_endian_store_16(event, 3, con_handle); 8054 reverse_bd_addr(address, &event[5]); 8055 event[11] = 1; // ACL connection 8056 event[12] = 0; // encryption disabled 8057 hci_emit_event(event, sizeof(event), 1); 8058 } 8059 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8060 if (disable_l2cap_timeouts) return; 8061 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8062 uint8_t event[4]; 8063 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8064 event[1] = sizeof(event) - 2; 8065 little_endian_store_16(event, 2, conn->con_handle); 8066 hci_emit_event(event, sizeof(event), 1); 8067 } 8068 #endif 8069 8070 #ifdef ENABLE_BLE 8071 #ifdef ENABLE_LE_CENTRAL 8072 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){ 8073 uint8_t hci_event[21]; 8074 hci_event[0] = HCI_EVENT_LE_META; 8075 hci_event[1] = sizeof(hci_event) - 2u; 8076 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8077 hci_event[3] = status; 8078 little_endian_store_16(hci_event, 4, con_handle); 8079 hci_event[6] = 0; // TODO: role 8080 hci_event[7] = address_type; 8081 reverse_bd_addr(address, &hci_event[8]); 8082 little_endian_store_16(hci_event, 14, 0); // interval 8083 little_endian_store_16(hci_event, 16, 0); // latency 8084 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8085 hci_event[20] = 0; // master clock accuracy 8086 hci_emit_event(hci_event, sizeof(hci_event), 1); 8087 // emit GAP event, too 8088 uint8_t gap_event[36]; 8089 hci_create_gap_connection_complete_event(hci_event, gap_event); 8090 hci_emit_event(gap_event, sizeof(gap_event), 1); 8091 } 8092 #endif 8093 #endif 8094 8095 static void hci_emit_transport_packet_sent(void){ 8096 // notify upper stack that it might be possible to send again 8097 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8098 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8099 } 8100 8101 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8102 uint8_t event[6]; 8103 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8104 event[1] = sizeof(event) - 2u; 8105 event[2] = 0; // status = OK 8106 little_endian_store_16(event, 3, con_handle); 8107 event[5] = reason; 8108 hci_emit_event(event, sizeof(event), 1); 8109 } 8110 8111 static void hci_emit_nr_connections_changed(void){ 8112 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8113 uint8_t event[3]; 8114 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8115 event[1] = sizeof(event) - 2u; 8116 event[2] = nr_hci_connections(); 8117 hci_emit_event(event, sizeof(event), 1); 8118 } 8119 8120 static void hci_emit_hci_open_failed(void){ 8121 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8122 uint8_t event[2]; 8123 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8124 event[1] = sizeof(event) - 2u; 8125 hci_emit_event(event, sizeof(event), 1); 8126 } 8127 8128 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8129 log_info("hci_emit_dedicated_bonding_result %u ", status); 8130 uint8_t event[9]; 8131 int pos = 0; 8132 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8133 event[pos++] = sizeof(event) - 2u; 8134 event[pos++] = status; 8135 reverse_bd_addr(address, &event[pos]); 8136 hci_emit_event(event, sizeof(event), 1); 8137 } 8138 8139 8140 #ifdef ENABLE_CLASSIC 8141 8142 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8143 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8144 uint8_t event[5]; 8145 int pos = 0; 8146 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8147 event[pos++] = sizeof(event) - 2; 8148 little_endian_store_16(event, 2, con_handle); 8149 pos += 2; 8150 event[pos++] = level; 8151 hci_emit_event(event, sizeof(event), 1); 8152 } 8153 8154 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8155 if (!connection) return LEVEL_0; 8156 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8157 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8158 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8159 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8160 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8161 // LEVEL 4 always requires 128 bit encrytion key size 8162 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8163 security_level = LEVEL_3; 8164 } 8165 return security_level; 8166 } 8167 8168 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8169 uint8_t event[4]; 8170 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8171 event[1] = sizeof(event) - 2; 8172 event[2] = discoverable; 8173 event[3] = connectable; 8174 hci_emit_event(event, sizeof(event), 1); 8175 } 8176 8177 // query if remote side supports eSCO 8178 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8179 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8180 if (!connection) return false; 8181 return (connection->remote_supported_features[0] & 1) != 0; 8182 } 8183 8184 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8185 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8186 if (!connection) return 0; 8187 return connection->remote_supported_sco_packets; 8188 } 8189 8190 static bool hci_ssp_supported(hci_connection_t * connection){ 8191 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8192 return (connection->bonding_flags & mask) == mask; 8193 } 8194 8195 // query if remote side supports SSP 8196 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8197 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8198 if (!connection) return false; 8199 return hci_ssp_supported(connection) ? 1 : 0; 8200 } 8201 8202 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8203 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8204 } 8205 8206 /** 8207 * Check if remote supported features query has completed 8208 */ 8209 bool hci_remote_features_available(hci_con_handle_t handle){ 8210 hci_connection_t * connection = hci_connection_for_handle(handle); 8211 if (!connection) return false; 8212 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8213 } 8214 8215 /** 8216 * Trigger remote supported features query 8217 */ 8218 8219 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8220 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8221 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8222 } 8223 } 8224 8225 void hci_remote_features_query(hci_con_handle_t con_handle){ 8226 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8227 if (!connection) return; 8228 hci_trigger_remote_features_for_connection(connection); 8229 hci_run(); 8230 } 8231 8232 // GAP API 8233 /** 8234 * @bbrief enable/disable bonding. default is enabled 8235 * @praram enabled 8236 */ 8237 void gap_set_bondable_mode(int enable){ 8238 hci_stack->bondable = enable ? 1 : 0; 8239 } 8240 /** 8241 * @brief Get bondable mode. 8242 * @return 1 if bondable 8243 */ 8244 int gap_get_bondable_mode(void){ 8245 return hci_stack->bondable; 8246 } 8247 8248 /** 8249 * @brief map link keys to security levels 8250 */ 8251 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8252 switch (link_key_type){ 8253 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8254 return LEVEL_4; 8255 case COMBINATION_KEY: 8256 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8257 return LEVEL_3; 8258 default: 8259 return LEVEL_2; 8260 } 8261 } 8262 8263 /** 8264 * @brief map link keys to secure connection yes/no 8265 */ 8266 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8267 switch (link_key_type){ 8268 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8269 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8270 return true; 8271 default: 8272 return false; 8273 } 8274 } 8275 8276 /** 8277 * @brief map link keys to authenticated 8278 */ 8279 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8280 switch (link_key_type){ 8281 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8282 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8283 return true; 8284 default: 8285 return false; 8286 } 8287 } 8288 8289 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8290 log_info("gap_mitm_protection_required_for_security_level %u", level); 8291 return level > LEVEL_2; 8292 } 8293 8294 /** 8295 * @brief get current security level 8296 */ 8297 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8298 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8299 if (!connection) return LEVEL_0; 8300 return gap_security_level_for_connection(connection); 8301 } 8302 8303 /** 8304 * @brief request connection to device to 8305 * @result GAP_AUTHENTICATION_RESULT 8306 */ 8307 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8308 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8309 if (!connection){ 8310 hci_emit_security_level(con_handle, LEVEL_0); 8311 return; 8312 } 8313 8314 btstack_assert(hci_is_le_connection(connection) == false); 8315 8316 // 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) 8317 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8318 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8319 requested_level = LEVEL_4; 8320 } 8321 8322 gap_security_level_t current_level = gap_security_level(con_handle); 8323 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8324 requested_level, connection->requested_security_level, current_level); 8325 8326 // authentication active if authentication request was sent or planned level > 0 8327 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8328 if (authentication_active){ 8329 // authentication already active 8330 if (connection->requested_security_level < requested_level){ 8331 // increase requested level as new level is higher 8332 // TODO: handle re-authentication when done 8333 connection->requested_security_level = requested_level; 8334 } 8335 } else { 8336 // no request active, notify if security sufficient 8337 if (requested_level <= current_level){ 8338 hci_emit_security_level(con_handle, current_level); 8339 return; 8340 } 8341 8342 // store request 8343 connection->requested_security_level = requested_level; 8344 8345 // start to authenticate connection 8346 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8347 8348 // request remote features if not already active, also trigger hci_run 8349 hci_remote_features_query(con_handle); 8350 } 8351 } 8352 8353 /** 8354 * @brief start dedicated bonding with device. disconnect after bonding 8355 * @param device 8356 * @param request MITM protection 8357 * @result GAP_DEDICATED_BONDING_COMPLETE 8358 */ 8359 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8360 8361 // create connection state machine 8362 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8363 8364 if (!connection){ 8365 return BTSTACK_MEMORY_ALLOC_FAILED; 8366 } 8367 8368 // delete link key 8369 gap_drop_link_key_for_bd_addr(device); 8370 8371 // configure LEVEL_2/3, dedicated bonding 8372 connection->state = SEND_CREATE_CONNECTION; 8373 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8374 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8375 connection->bonding_flags = BONDING_DEDICATED; 8376 8377 hci_run(); 8378 8379 return 0; 8380 } 8381 8382 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8383 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8384 if (connection == NULL){ 8385 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8386 } 8387 if (defer){ 8388 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8389 } else { 8390 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8391 // trigger disconnect 8392 hci_run(); 8393 } 8394 return ERROR_CODE_SUCCESS; 8395 } 8396 8397 void gap_set_local_name(const char * local_name){ 8398 hci_stack->local_name = local_name; 8399 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8400 // also update EIR if not set by user 8401 if (hci_stack->eir_data == NULL){ 8402 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8403 } 8404 hci_run(); 8405 } 8406 #endif 8407 8408 8409 #ifdef ENABLE_BLE 8410 8411 #ifdef ENABLE_LE_CENTRAL 8412 void gap_start_scan(void){ 8413 hci_stack->le_scanning_enabled = true; 8414 hci_run(); 8415 } 8416 8417 void gap_stop_scan(void){ 8418 hci_stack->le_scanning_enabled = false; 8419 hci_run(); 8420 } 8421 8422 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8423 hci_stack->le_scan_type = scan_type; 8424 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8425 hci_stack->le_scan_interval = scan_interval; 8426 hci_stack->le_scan_window = scan_window; 8427 hci_stack->le_scanning_param_update = true; 8428 hci_run(); 8429 } 8430 8431 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8432 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8433 } 8434 8435 void gap_set_scan_duplicate_filter(bool enabled){ 8436 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8437 } 8438 8439 void gap_set_scan_phys(uint8_t phys){ 8440 // LE Coded and LE 1M PHY 8441 hci_stack->le_scan_phys = phys & 0x05; 8442 } 8443 8444 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8445 // disallow le connection if outgoing already active 8446 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8447 log_error("le connect already active"); 8448 return ERROR_CODE_COMMAND_DISALLOWED; 8449 } 8450 8451 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8452 if (conn == NULL) { 8453 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8454 if (conn == false){ 8455 // alloc failed 8456 log_info("gap_connect: failed to alloc hci_connection_t"); 8457 return BTSTACK_MEMORY_ALLOC_FAILED; 8458 } 8459 } else { 8460 switch (conn->state) { 8461 case RECEIVED_DISCONNECTION_COMPLETE: 8462 // connection was just disconnected, reset state and allow re-connect 8463 conn->role = HCI_ROLE_MASTER; 8464 break; 8465 default: 8466 return ERROR_CODE_COMMAND_DISALLOWED; 8467 } 8468 } 8469 8470 // set le connecting state 8471 if (hci_is_le_connection_type(addr_type)){ 8472 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8473 } 8474 8475 // trigger connect 8476 log_info("gap_connect: send create connection next"); 8477 conn->state = SEND_CREATE_CONNECTION; 8478 hci_run(); 8479 return ERROR_CODE_SUCCESS; 8480 } 8481 8482 // @assumption: only a single outgoing LE Connection exists 8483 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8484 btstack_linked_item_t *it; 8485 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8486 hci_connection_t * conn = (hci_connection_t *) it; 8487 if (hci_is_le_connection(conn)){ 8488 switch (conn->state){ 8489 case SEND_CREATE_CONNECTION: 8490 case SENT_CREATE_CONNECTION: 8491 return conn; 8492 default: 8493 break; 8494 }; 8495 } 8496 } 8497 return NULL; 8498 } 8499 8500 uint8_t gap_connect_cancel(void){ 8501 hci_connection_t * conn; 8502 switch (hci_stack->le_connecting_request){ 8503 case LE_CONNECTING_IDLE: 8504 break; 8505 case LE_CONNECTING_WHITELIST: 8506 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8507 hci_run(); 8508 break; 8509 case LE_CONNECTING_DIRECT: 8510 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8511 conn = gap_get_outgoing_le_connection(); 8512 if (conn == NULL){ 8513 hci_run(); 8514 } else { 8515 switch (conn->state){ 8516 case SEND_CREATE_CONNECTION: 8517 // skip sending create connection and emit event instead 8518 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8519 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8520 btstack_memory_hci_connection_free( conn ); 8521 break; 8522 case SENT_CREATE_CONNECTION: 8523 // let hci_run_general_gap_le cancel outgoing connection 8524 hci_run(); 8525 break; 8526 default: 8527 break; 8528 } 8529 } 8530 break; 8531 default: 8532 btstack_unreachable(); 8533 break; 8534 } 8535 return ERROR_CODE_SUCCESS; 8536 } 8537 8538 /** 8539 * @brief Set connection parameters for outgoing connections 8540 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8541 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8542 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8543 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8544 * @param conn_latency, default: 4 8545 * @param supervision_timeout (unit: 10ms), default: 720 ms 8546 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8547 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8548 */ 8549 8550 void gap_set_connection_phys(uint8_t phys){ 8551 // LE Coded, LE 1M, LE 2M PHY 8552 hci_stack->le_connection_phys = phys & 7; 8553 } 8554 8555 #endif 8556 8557 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8558 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8559 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8560 hci_stack->le_connection_scan_interval = conn_scan_interval; 8561 hci_stack->le_connection_scan_window = conn_scan_window; 8562 hci_stack->le_connection_interval_min = conn_interval_min; 8563 hci_stack->le_connection_interval_max = conn_interval_max; 8564 hci_stack->le_connection_latency = conn_latency; 8565 hci_stack->le_supervision_timeout = supervision_timeout; 8566 hci_stack->le_minimum_ce_length = min_ce_length; 8567 hci_stack->le_maximum_ce_length = max_ce_length; 8568 } 8569 8570 /** 8571 * @brief Updates the connection parameters for a given LE connection 8572 * @param handle 8573 * @param conn_interval_min (unit: 1.25ms) 8574 * @param conn_interval_max (unit: 1.25ms) 8575 * @param conn_latency 8576 * @param supervision_timeout (unit: 10ms) 8577 * @return 0 if ok 8578 */ 8579 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8580 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8581 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8582 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8583 connection->le_conn_interval_min = conn_interval_min; 8584 connection->le_conn_interval_max = conn_interval_max; 8585 connection->le_conn_latency = conn_latency; 8586 connection->le_supervision_timeout = supervision_timeout; 8587 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8588 hci_run(); 8589 return 0; 8590 } 8591 8592 /** 8593 * @brief Request an update of the connection parameter for a given LE connection 8594 * @param handle 8595 * @param conn_interval_min (unit: 1.25ms) 8596 * @param conn_interval_max (unit: 1.25ms) 8597 * @param conn_latency 8598 * @param supervision_timeout (unit: 10ms) 8599 * @return 0 if ok 8600 */ 8601 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8602 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8603 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8604 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8605 connection->le_conn_interval_min = conn_interval_min; 8606 connection->le_conn_interval_max = conn_interval_max; 8607 connection->le_conn_latency = conn_latency; 8608 connection->le_supervision_timeout = supervision_timeout; 8609 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8610 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8611 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8612 return 0; 8613 } 8614 8615 #ifdef ENABLE_LE_PERIPHERAL 8616 8617 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8618 static void hci_assert_advertisement_set_0_ready(void){ 8619 // force advertising set creation for legacy LE Advertising 8620 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8621 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8622 } 8623 } 8624 #endif 8625 8626 /** 8627 * @brief Set Advertisement Data 8628 * @param advertising_data_length 8629 * @param advertising_data (max 31 octets) 8630 * @note data is not copied, pointer has to stay valid 8631 */ 8632 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8633 hci_stack->le_advertisements_data_len = advertising_data_length; 8634 hci_stack->le_advertisements_data = advertising_data; 8635 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8636 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8637 hci_assert_advertisement_set_0_ready(); 8638 #endif 8639 hci_run(); 8640 } 8641 8642 /** 8643 * @brief Set Scan Response Data 8644 * @param advertising_data_length 8645 * @param advertising_data (max 31 octets) 8646 * @note data is not copied, pointer has to stay valid 8647 */ 8648 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8649 hci_stack->le_scan_response_data_len = scan_response_data_length; 8650 hci_stack->le_scan_response_data = scan_response_data; 8651 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8652 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8653 hci_assert_advertisement_set_0_ready(); 8654 #endif 8655 hci_run(); 8656 } 8657 8658 /** 8659 * @brief Set Advertisement Parameters 8660 * @param adv_int_min 8661 * @param adv_int_max 8662 * @param adv_type 8663 * @param direct_address_type 8664 * @param direct_address 8665 * @param channel_map 8666 * @param filter_policy 8667 * 8668 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8669 */ 8670 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8671 uint8_t direct_address_typ, bd_addr_t direct_address, 8672 uint8_t channel_map, uint8_t filter_policy) { 8673 8674 hci_stack->le_advertisements_interval_min = adv_int_min; 8675 hci_stack->le_advertisements_interval_max = adv_int_max; 8676 hci_stack->le_advertisements_type = adv_type; 8677 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8678 hci_stack->le_advertisements_channel_map = channel_map; 8679 hci_stack->le_advertisements_filter_policy = filter_policy; 8680 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8681 6); 8682 8683 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8684 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8685 hci_run(); 8686 } 8687 8688 /** 8689 * @brief Enable/Disable Advertisements 8690 * @param enabled 8691 */ 8692 void gap_advertisements_enable(int enabled){ 8693 if (enabled == 0){ 8694 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8695 } else { 8696 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8697 } 8698 hci_update_advertisements_enabled_for_current_roles(); 8699 hci_run(); 8700 } 8701 8702 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8703 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8704 btstack_linked_list_iterator_t it; 8705 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8706 while (btstack_linked_list_iterator_has_next(&it)){ 8707 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8708 if ( item->advertising_handle == advertising_handle ) { 8709 return item; 8710 } 8711 } 8712 return NULL; 8713 } 8714 8715 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8716 hci_stack->le_resolvable_private_address_update_s = update_s; 8717 hci_run(); 8718 return ERROR_CODE_SUCCESS; 8719 } 8720 8721 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8722 // find free advertisement handle 8723 uint8_t advertisement_handle; 8724 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8725 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8726 } 8727 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8728 // clear 8729 memset(storage, 0, sizeof(le_advertising_set_t)); 8730 // copy params 8731 storage->advertising_handle = advertisement_handle; 8732 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8733 // add to list 8734 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8735 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8736 *out_advertising_handle = advertisement_handle; 8737 // set tasks and start 8738 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8739 hci_run(); 8740 return ERROR_CODE_SUCCESS; 8741 } 8742 8743 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8744 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8745 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8746 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8747 // set tasks and start 8748 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8749 hci_run(); 8750 return ERROR_CODE_SUCCESS; 8751 } 8752 8753 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8754 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8755 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8756 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8757 return ERROR_CODE_SUCCESS; 8758 } 8759 8760 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8761 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8762 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8763 memcpy(advertising_set->random_address, random_address, 6); 8764 // set tasks and start 8765 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8766 hci_run(); 8767 return ERROR_CODE_SUCCESS; 8768 } 8769 8770 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8771 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8772 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8773 advertising_set->adv_data = advertising_data; 8774 advertising_set->adv_data_len = advertising_data_length; 8775 // set tasks and start 8776 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8777 hci_run(); 8778 return ERROR_CODE_SUCCESS; 8779 } 8780 8781 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){ 8782 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8783 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8784 advertising_set->scan_data = scan_response_data; 8785 advertising_set->scan_data_len = scan_response_data_length; 8786 // set tasks and start 8787 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8788 hci_run(); 8789 return ERROR_CODE_SUCCESS; 8790 } 8791 8792 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8793 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8794 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8795 advertising_set->enable_timeout = timeout; 8796 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8797 // set tasks and start 8798 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8799 hci_run(); 8800 return ERROR_CODE_SUCCESS; 8801 } 8802 8803 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8804 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8805 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8806 // set tasks and start 8807 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8808 hci_run(); 8809 return ERROR_CODE_SUCCESS; 8810 } 8811 8812 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 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 // set tasks and start 8816 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8817 hci_run(); 8818 return ERROR_CODE_SUCCESS; 8819 } 8820 8821 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8822 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8823 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8824 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8825 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8826 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8827 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8828 // set tasks and start 8829 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8830 hci_run(); 8831 return ERROR_CODE_SUCCESS; 8832 } 8833 8834 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8835 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8836 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8837 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8838 return ERROR_CODE_SUCCESS; 8839 } 8840 8841 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8842 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8843 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8844 advertising_set->periodic_data = periodic_data; 8845 advertising_set->periodic_data_len = periodic_data_length; 8846 // set tasks and start 8847 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8848 hci_run(); 8849 return ERROR_CODE_SUCCESS; 8850 } 8851 8852 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8853 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8854 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8855 // set tasks and start 8856 advertising_set->periodic_include_adi = include_adi; 8857 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8858 hci_run(); 8859 return ERROR_CODE_SUCCESS; 8860 } 8861 8862 uint8_t gap_periodic_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_PERIODIC_ENABLED; 8867 hci_run(); 8868 return ERROR_CODE_SUCCESS; 8869 } 8870 8871 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8872 hci_stack->le_past_mode = mode; 8873 hci_stack->le_past_skip = skip; 8874 hci_stack->le_past_sync_timeout = sync_timeout; 8875 hci_stack->le_past_cte_type = cte_type; 8876 hci_stack->le_past_set_default_params = true; 8877 hci_run(); 8878 return ERROR_CODE_SUCCESS; 8879 } 8880 8881 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8882 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8883 if (hci_connection == NULL){ 8884 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8885 } 8886 hci_connection->le_past_sync_handle = sync_handle; 8887 hci_connection->le_past_service_data = service_data; 8888 hci_run(); 8889 return ERROR_CODE_SUCCESS; 8890 } 8891 8892 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8893 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8894 if (hci_connection == NULL){ 8895 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8896 } 8897 hci_connection->le_past_advertising_handle = advertising_handle; 8898 hci_connection->le_past_service_data = service_data; 8899 hci_run(); 8900 return ERROR_CODE_SUCCESS; 8901 } 8902 8903 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8904 8905 #endif 8906 8907 #endif 8908 8909 void hci_le_set_own_address_type(uint8_t own_address_type){ 8910 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8911 if (own_address_type == hci_stack->le_own_addr_type) return; 8912 hci_stack->le_own_addr_type = own_address_type; 8913 8914 #ifdef ENABLE_LE_PERIPHERAL 8915 // update advertisement parameters, too 8916 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8917 hci_run(); 8918 #endif 8919 #ifdef ENABLE_LE_CENTRAL 8920 // note: we don't update scan parameters or modify ongoing connection attempts 8921 #endif 8922 } 8923 8924 void hci_le_random_address_set(const bd_addr_t random_address){ 8925 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8926 memcpy(hci_stack->le_random_address, random_address, 6); 8927 hci_stack->le_random_address_set = true; 8928 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8929 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8930 if (hci_le_extended_advertising_supported()){ 8931 hci_assert_advertisement_set_0_ready(); 8932 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8933 } 8934 #endif 8935 hci_run(); 8936 } 8937 8938 #endif 8939 8940 uint8_t gap_disconnect(hci_con_handle_t handle){ 8941 hci_connection_t * conn = hci_connection_for_handle(handle); 8942 if (!conn){ 8943 hci_emit_disconnection_complete(handle, 0); 8944 return 0; 8945 } 8946 // ignore if already disconnected 8947 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8948 return 0; 8949 } 8950 conn->state = SEND_DISCONNECT; 8951 hci_run(); 8952 return 0; 8953 } 8954 8955 int gap_read_rssi(hci_con_handle_t con_handle){ 8956 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8957 if (hci_connection == NULL) return 0; 8958 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8959 hci_run(); 8960 return 1; 8961 } 8962 8963 /** 8964 * @brief Get connection type 8965 * @param con_handle 8966 * @result connection_type 8967 */ 8968 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8969 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8970 if (!conn) return GAP_CONNECTION_INVALID; 8971 switch (conn->address_type){ 8972 case BD_ADDR_TYPE_LE_PUBLIC: 8973 case BD_ADDR_TYPE_LE_RANDOM: 8974 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8975 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8976 return GAP_CONNECTION_LE; 8977 case BD_ADDR_TYPE_SCO: 8978 return GAP_CONNECTION_SCO; 8979 case BD_ADDR_TYPE_ACL: 8980 return GAP_CONNECTION_ACL; 8981 default: 8982 return GAP_CONNECTION_INVALID; 8983 } 8984 } 8985 8986 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8987 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8988 if (!conn) return HCI_ROLE_INVALID; 8989 return (hci_role_t) conn->role; 8990 } 8991 8992 8993 #ifdef ENABLE_CLASSIC 8994 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8995 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8996 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8997 conn->request_role = role; 8998 hci_run(); 8999 return ERROR_CODE_SUCCESS; 9000 } 9001 #endif 9002 9003 #ifdef ENABLE_BLE 9004 9005 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){ 9006 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9007 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9008 9009 conn->le_phy_update_all_phys = all_phys; 9010 conn->le_phy_update_tx_phys = tx_phys; 9011 conn->le_phy_update_rx_phys = rx_phys; 9012 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9013 9014 hci_run(); 9015 9016 return 0; 9017 } 9018 9019 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9020 9021 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9022 // incorrect configuration: 9023 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9024 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9025 btstack_assert(false); 9026 #endif 9027 9028 // check if already in list 9029 btstack_linked_list_iterator_t it; 9030 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9031 while (btstack_linked_list_iterator_has_next(&it)) { 9032 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9033 if (entry->address_type != address_type) { 9034 continue; 9035 } 9036 if (memcmp(entry->address, address, 6) != 0) { 9037 continue; 9038 } 9039 9040 // if already on controller: 9041 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9042 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9043 // drop remove request 9044 entry->state = LE_WHITELIST_ON_CONTROLLER; 9045 return ERROR_CODE_SUCCESS; 9046 } else { 9047 // disallow as already on controller 9048 return ERROR_CODE_COMMAND_DISALLOWED; 9049 } 9050 } 9051 9052 // assume scheduled to add 9053 return ERROR_CODE_COMMAND_DISALLOWED; 9054 } 9055 9056 // alloc and add to list 9057 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9058 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9059 entry->address_type = address_type; 9060 (void)memcpy(entry->address, address, 6); 9061 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9062 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9063 return ERROR_CODE_SUCCESS; 9064 } 9065 9066 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9067 btstack_linked_list_iterator_t it; 9068 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9069 while (btstack_linked_list_iterator_has_next(&it)){ 9070 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9071 if (entry->address_type != address_type) { 9072 continue; 9073 } 9074 if (memcmp(entry->address, address, 6) != 0) { 9075 continue; 9076 } 9077 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9078 // remove from controller if already present 9079 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9080 } else { 9081 // directly remove entry from whitelist 9082 btstack_linked_list_iterator_remove(&it); 9083 btstack_memory_whitelist_entry_free(entry); 9084 } 9085 return ERROR_CODE_SUCCESS; 9086 } 9087 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9088 } 9089 9090 static void hci_whitelist_clear(void){ 9091 btstack_linked_list_iterator_t it; 9092 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9093 while (btstack_linked_list_iterator_has_next(&it)){ 9094 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9095 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9096 // remove from controller if already present 9097 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9098 continue; 9099 } 9100 // directly remove entry from whitelist 9101 btstack_linked_list_iterator_remove(&it); 9102 btstack_memory_whitelist_entry_free(entry); 9103 } 9104 } 9105 9106 /** 9107 * @brief Clear Whitelist 9108 * @return 0 if ok 9109 */ 9110 uint8_t gap_whitelist_clear(void){ 9111 hci_whitelist_clear(); 9112 hci_run(); 9113 return ERROR_CODE_SUCCESS; 9114 } 9115 9116 /** 9117 * @brief Add Device to Whitelist 9118 * @param address_typ 9119 * @param address 9120 * @return 0 if ok 9121 */ 9122 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9123 uint8_t status = hci_whitelist_add(address_type, address); 9124 if (status){ 9125 return status; 9126 } 9127 hci_run(); 9128 return ERROR_CODE_SUCCESS; 9129 } 9130 9131 /** 9132 * @brief Remove Device from Whitelist 9133 * @param address_typ 9134 * @param address 9135 * @return 0 if ok 9136 */ 9137 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9138 uint8_t status = hci_whitelist_remove(address_type, address); 9139 if (status){ 9140 return status; 9141 } 9142 hci_run(); 9143 return ERROR_CODE_SUCCESS; 9144 } 9145 9146 #ifdef ENABLE_LE_CENTRAL 9147 /** 9148 * @brief Connect with Whitelist 9149 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9150 * @return - if ok 9151 */ 9152 uint8_t gap_connect_with_whitelist(void){ 9153 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9154 return ERROR_CODE_COMMAND_DISALLOWED; 9155 } 9156 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9157 hci_run(); 9158 return ERROR_CODE_SUCCESS; 9159 } 9160 9161 /** 9162 * @brief Auto Connection Establishment - Start Connecting to device 9163 * @param address_typ 9164 * @param address 9165 * @return 0 if ok 9166 */ 9167 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9168 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9169 return ERROR_CODE_COMMAND_DISALLOWED; 9170 } 9171 9172 uint8_t status = hci_whitelist_add(address_type, address); 9173 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9174 return status; 9175 } 9176 9177 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9178 9179 hci_run(); 9180 return ERROR_CODE_SUCCESS; 9181 } 9182 9183 /** 9184 * @brief Auto Connection Establishment - Stop Connecting to device 9185 * @param address_typ 9186 * @param address 9187 * @return 0 if ok 9188 */ 9189 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9190 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9191 return ERROR_CODE_COMMAND_DISALLOWED; 9192 } 9193 9194 hci_whitelist_remove(address_type, address); 9195 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9196 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9197 } 9198 hci_run(); 9199 return 0; 9200 } 9201 9202 /** 9203 * @brief Auto Connection Establishment - Stop everything 9204 * @note Convenience function to stop all active auto connection attempts 9205 */ 9206 uint8_t gap_auto_connection_stop_all(void){ 9207 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9208 return ERROR_CODE_COMMAND_DISALLOWED; 9209 } 9210 hci_whitelist_clear(); 9211 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9212 hci_run(); 9213 return ERROR_CODE_SUCCESS; 9214 } 9215 9216 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9217 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9218 if (!conn) return 0; 9219 return conn->le_connection_interval; 9220 } 9221 #endif 9222 #endif 9223 9224 #ifdef ENABLE_CLASSIC 9225 /** 9226 * @brief Set Extended Inquiry Response data 9227 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9228 * @note has to be done before stack starts up 9229 */ 9230 void gap_set_extended_inquiry_response(const uint8_t * data){ 9231 hci_stack->eir_data = data; 9232 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9233 hci_run(); 9234 } 9235 9236 /** 9237 * @brief Start GAP Classic Inquiry 9238 * @param duration in 1.28s units 9239 * @return 0 if ok 9240 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9241 */ 9242 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9243 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9244 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9245 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9246 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9247 } 9248 hci_stack->inquiry_state = duration_in_1280ms_units; 9249 hci_stack->inquiry_max_period_length = 0; 9250 hci_stack->inquiry_min_period_length = 0; 9251 hci_run(); 9252 return 0; 9253 } 9254 9255 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9256 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9257 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9258 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9259 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9260 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9261 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9262 9263 hci_stack->inquiry_state = duration; 9264 hci_stack->inquiry_max_period_length = max_period_length; 9265 hci_stack->inquiry_min_period_length = min_period_length; 9266 hci_run(); 9267 return 0; 9268 } 9269 9270 /** 9271 * @brief Stop GAP Classic Inquiry 9272 * @return 0 if ok 9273 */ 9274 int gap_inquiry_stop(void){ 9275 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9276 // emit inquiry complete event, before it even started 9277 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9278 hci_emit_event(event, sizeof(event), 1); 9279 return 0; 9280 } 9281 switch (hci_stack->inquiry_state){ 9282 case GAP_INQUIRY_STATE_ACTIVE: 9283 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9284 hci_run(); 9285 return ERROR_CODE_SUCCESS; 9286 case GAP_INQUIRY_STATE_PERIODIC: 9287 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9288 hci_run(); 9289 return ERROR_CODE_SUCCESS; 9290 default: 9291 return ERROR_CODE_COMMAND_DISALLOWED; 9292 } 9293 } 9294 9295 void gap_inquiry_set_lap(uint32_t lap){ 9296 hci_stack->inquiry_lap = lap; 9297 } 9298 9299 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9300 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9301 hci_stack->inquiry_scan_window = inquiry_scan_window; 9302 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9303 hci_run(); 9304 } 9305 9306 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9307 { 9308 hci_stack->inquiry_tx_power_level = tx_power; 9309 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9310 hci_run(); 9311 } 9312 9313 9314 /** 9315 * @brief Remote Name Request 9316 * @param addr 9317 * @param page_scan_repetition_mode 9318 * @param clock_offset only used when bit 15 is set 9319 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9320 */ 9321 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9322 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9323 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9324 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9325 hci_stack->remote_name_clock_offset = clock_offset; 9326 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9327 hci_run(); 9328 return 0; 9329 } 9330 9331 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9332 hci_stack->gap_pairing_state = state; 9333 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9334 hci_run(); 9335 return 0; 9336 } 9337 9338 /** 9339 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9340 * @param addr 9341 * @param pin_data 9342 * @param pin_len 9343 * @return 0 if ok 9344 */ 9345 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9346 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9347 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9348 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9349 hci_stack->gap_pairing_pin_len = pin_len; 9350 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9351 } 9352 9353 /** 9354 * @brief Legacy Pairing Pin Code Response 9355 * @param addr 9356 * @param pin 9357 * @return 0 if ok 9358 */ 9359 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9360 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9361 } 9362 9363 /** 9364 * @brief Abort Legacy Pairing 9365 * @param addr 9366 * @param pin 9367 * @return 0 if ok 9368 */ 9369 int gap_pin_code_negative(bd_addr_t addr){ 9370 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9371 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9372 } 9373 9374 /** 9375 * @brief SSP Passkey Response 9376 * @param addr 9377 * @param passkey 9378 * @return 0 if ok 9379 */ 9380 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9381 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9382 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9383 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9384 } 9385 9386 /** 9387 * @brief Abort SSP Passkey Entry/Pairing 9388 * @param addr 9389 * @param pin 9390 * @return 0 if ok 9391 */ 9392 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9393 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9394 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9395 } 9396 9397 /** 9398 * @brief Accept SSP Numeric Comparison 9399 * @param addr 9400 * @param passkey 9401 * @return 0 if ok 9402 */ 9403 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9404 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9405 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9406 } 9407 9408 /** 9409 * @brief Abort SSP Numeric Comparison/Pairing 9410 * @param addr 9411 * @param pin 9412 * @return 0 if ok 9413 */ 9414 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9415 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9416 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9417 } 9418 9419 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9420 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9421 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9422 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9423 connectionSetAuthenticationFlags(conn, flag); 9424 hci_run(); 9425 return ERROR_CODE_SUCCESS; 9426 } 9427 #endif 9428 9429 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9430 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9431 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9432 } 9433 9434 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9435 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9436 } 9437 #endif 9438 9439 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9440 /** 9441 * @brief Report Remote OOB Data 9442 * @param bd_addr 9443 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9444 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9445 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9446 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9447 */ 9448 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){ 9449 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9450 if (connection == NULL) { 9451 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9452 } 9453 connection->classic_oob_c_192 = c_192; 9454 connection->classic_oob_r_192 = r_192; 9455 9456 // ignore P-256 if not supported by us 9457 if (hci_stack->secure_connections_active){ 9458 connection->classic_oob_c_256 = c_256; 9459 connection->classic_oob_r_256 = r_256; 9460 } 9461 9462 return ERROR_CODE_SUCCESS; 9463 } 9464 /** 9465 * @brief Generate new OOB data 9466 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9467 */ 9468 void gap_ssp_generate_oob_data(void){ 9469 hci_stack->classic_read_local_oob_data = true; 9470 hci_run(); 9471 } 9472 9473 #endif 9474 9475 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9476 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9477 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9478 if (connection == NULL) { 9479 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9480 } 9481 9482 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9483 connection->link_key_type = type; 9484 9485 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9486 } 9487 9488 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9489 /** 9490 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9491 * @param inquiry_mode see bluetooth_defines.h 9492 */ 9493 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9494 hci_stack->inquiry_mode = inquiry_mode; 9495 } 9496 9497 /** 9498 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9499 */ 9500 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9501 hci_stack->sco_voice_setting = voice_setting; 9502 } 9503 9504 /** 9505 * @brief Get SCO Voice Setting 9506 * @return current voice setting 9507 */ 9508 uint16_t hci_get_sco_voice_setting(void){ 9509 return hci_stack->sco_voice_setting; 9510 } 9511 9512 static int hci_have_usb_transport(void){ 9513 if (!hci_stack->hci_transport) return 0; 9514 const char * transport_name = hci_stack->hci_transport->name; 9515 if (!transport_name) return 0; 9516 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9517 } 9518 9519 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9520 uint16_t sco_packet_length = 0; 9521 9522 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9523 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9524 int multiplier; 9525 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9526 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9527 multiplier = 2; 9528 } else { 9529 multiplier = 1; 9530 } 9531 #endif 9532 9533 #ifdef ENABLE_SCO_OVER_HCI 9534 if (hci_have_usb_transport()){ 9535 // see Core Spec for H2 USB Transfer. 9536 // 3 byte SCO header + 24 bytes per connection 9537 // @note multiple sco connections not supported currently 9538 sco_packet_length = 3 + 24 * multiplier; 9539 } else { 9540 // 3 byte SCO header + SCO packet length over the air 9541 sco_packet_length = 3 + payload_size * multiplier; 9542 // assert that it still fits inside an SCO buffer 9543 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9544 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9545 } 9546 } 9547 #endif 9548 #ifdef HAVE_SCO_TRANSPORT 9549 // 3 byte SCO header + SCO packet length over the air 9550 sco_packet_length = 3 + payload_size * multiplier; 9551 // assert that it still fits inside an SCO buffer 9552 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9553 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9554 } 9555 #endif 9556 return sco_packet_length; 9557 } 9558 9559 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9560 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9561 if (connection != NULL){ 9562 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9563 } 9564 return 0; 9565 } 9566 9567 uint16_t hci_get_sco_packet_length(void){ 9568 btstack_linked_list_iterator_t it; 9569 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9570 while (btstack_linked_list_iterator_has_next(&it)){ 9571 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9572 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9573 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9574 } 9575 } 9576 return 0; 9577 } 9578 9579 /** 9580 * @brief Sets the master/slave policy 9581 * @param policy (0: attempt to become master, 1: let connecting device decide) 9582 */ 9583 void hci_set_master_slave_policy(uint8_t policy){ 9584 hci_stack->master_slave_policy = policy; 9585 } 9586 9587 #endif 9588 9589 HCI_STATE hci_get_state(void){ 9590 return hci_stack->state; 9591 } 9592 9593 #ifdef ENABLE_CLASSIC 9594 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9595 hci_stack->gap_classic_accept_callback = accept_callback; 9596 } 9597 #endif 9598 9599 /** 9600 * @brief Set callback for Bluetooth Hardware Error 9601 */ 9602 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9603 hci_stack->hardware_error_callback = fn; 9604 } 9605 9606 void hci_disconnect_all(void){ 9607 btstack_linked_list_iterator_t it; 9608 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9609 while (btstack_linked_list_iterator_has_next(&it)){ 9610 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9611 if (con->state == SENT_DISCONNECT) continue; 9612 con->state = SEND_DISCONNECT; 9613 } 9614 hci_run(); 9615 } 9616 9617 uint16_t hci_get_manufacturer(void){ 9618 return hci_stack->manufacturer; 9619 } 9620 9621 #ifdef ENABLE_BLE 9622 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9623 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9624 if (!hci_con) return NULL; 9625 return &hci_con->sm_connection; 9626 } 9627 9628 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9629 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9630 #endif 9631 9632 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9633 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9634 if (hci_connection == NULL) return 0; 9635 if (hci_is_le_connection(hci_connection)){ 9636 #ifdef ENABLE_BLE 9637 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9638 if (sm_conn->sm_connection_encrypted != 0u) { 9639 return sm_conn->sm_actual_encryption_key_size; 9640 } 9641 #endif 9642 } else { 9643 #ifdef ENABLE_CLASSIC 9644 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9645 return hci_connection->encryption_key_size; 9646 } 9647 #endif 9648 } 9649 return 0; 9650 } 9651 9652 bool gap_authenticated(hci_con_handle_t con_handle){ 9653 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9654 if (hci_connection == NULL) return false; 9655 9656 switch (hci_connection->address_type){ 9657 #ifdef ENABLE_BLE 9658 case BD_ADDR_TYPE_LE_PUBLIC: 9659 case BD_ADDR_TYPE_LE_RANDOM: 9660 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9661 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9662 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9663 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9664 #endif 9665 #ifdef ENABLE_CLASSIC 9666 case BD_ADDR_TYPE_SCO: 9667 case BD_ADDR_TYPE_ACL: 9668 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9669 #endif 9670 default: 9671 return false; 9672 } 9673 } 9674 9675 bool gap_secure_connection(hci_con_handle_t con_handle){ 9676 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9677 if (hci_connection == NULL) return 0; 9678 9679 switch (hci_connection->address_type){ 9680 #ifdef ENABLE_BLE 9681 case BD_ADDR_TYPE_LE_PUBLIC: 9682 case BD_ADDR_TYPE_LE_RANDOM: 9683 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9684 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9685 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9686 return hci_connection->sm_connection.sm_connection_sc; 9687 #endif 9688 #ifdef ENABLE_CLASSIC 9689 case BD_ADDR_TYPE_SCO: 9690 case BD_ADDR_TYPE_ACL: 9691 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9692 #endif 9693 default: 9694 return false; 9695 } 9696 } 9697 9698 bool gap_bonded(hci_con_handle_t con_handle){ 9699 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9700 if (hci_connection == NULL) return 0; 9701 9702 #ifdef ENABLE_CLASSIC 9703 link_key_t link_key; 9704 link_key_type_t link_key_type; 9705 #endif 9706 switch (hci_connection->address_type){ 9707 #ifdef ENABLE_BLE 9708 case BD_ADDR_TYPE_LE_PUBLIC: 9709 case BD_ADDR_TYPE_LE_RANDOM: 9710 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9711 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9712 return hci_connection->sm_connection.sm_le_db_index >= 0; 9713 #endif 9714 #ifdef ENABLE_CLASSIC 9715 case BD_ADDR_TYPE_SCO: 9716 case BD_ADDR_TYPE_ACL: 9717 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9718 #endif 9719 default: 9720 return false; 9721 } 9722 } 9723 9724 #ifdef ENABLE_BLE 9725 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9726 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9727 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9728 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9729 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9730 return sm_conn->sm_connection_authorization_state; 9731 } 9732 #endif 9733 9734 #ifdef ENABLE_CLASSIC 9735 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){ 9736 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9737 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9738 conn->sniff_min_interval = sniff_min_interval; 9739 conn->sniff_max_interval = sniff_max_interval; 9740 conn->sniff_attempt = sniff_attempt; 9741 conn->sniff_timeout = sniff_timeout; 9742 hci_run(); 9743 return 0; 9744 } 9745 9746 /** 9747 * @brief Exit Sniff mode 9748 * @param con_handle 9749 @ @return 0 if ok 9750 */ 9751 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9752 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9753 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9754 conn->sniff_min_interval = 0xffff; 9755 hci_run(); 9756 return 0; 9757 } 9758 9759 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){ 9760 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9761 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9762 conn->sniff_subrating_max_latency = max_latency; 9763 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9764 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9765 hci_run(); 9766 return ERROR_CODE_SUCCESS; 9767 } 9768 9769 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){ 9770 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9771 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9772 conn->qos_service_type = service_type; 9773 conn->qos_token_rate = token_rate; 9774 conn->qos_peak_bandwidth = peak_bandwidth; 9775 conn->qos_latency = latency; 9776 conn->qos_delay_variation = delay_variation; 9777 hci_run(); 9778 return ERROR_CODE_SUCCESS; 9779 } 9780 9781 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9782 hci_stack->new_page_scan_interval = page_scan_interval; 9783 hci_stack->new_page_scan_window = page_scan_window; 9784 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9785 hci_run(); 9786 } 9787 9788 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9789 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9790 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9791 hci_run(); 9792 } 9793 9794 void gap_set_page_timeout(uint16_t page_timeout){ 9795 hci_stack->page_timeout = page_timeout; 9796 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9797 hci_run(); 9798 } 9799 9800 #endif 9801 9802 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9803 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9804 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9805 if (le_device_db_index >= le_device_db_max_count()) return; 9806 uint8_t offset = le_device_db_index >> 3; 9807 uint8_t mask = 1 << (le_device_db_index & 7); 9808 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9809 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9810 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9811 // note: go back to remove entries, otherwise, a remove + add will skip the add 9812 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9813 } 9814 } 9815 9816 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9817 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9818 if (le_device_db_index >= le_device_db_max_count()) return; 9819 uint8_t offset = le_device_db_index >> 3; 9820 uint8_t mask = 1 << (le_device_db_index & 7); 9821 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9822 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9823 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9824 } 9825 } 9826 9827 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9828 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9829 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9830 } 9831 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9832 // restart le resolving list update 9833 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9834 } 9835 return ERROR_CODE_SUCCESS; 9836 } 9837 9838 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9839 hci_stack->le_privacy_mode = privacy_mode; 9840 } 9841 #endif 9842 9843 #ifdef ENABLE_BLE 9844 #ifdef ENABLE_LE_CENTRAL 9845 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9846 9847 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9848 9849 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9850 // incorrect configuration: 9851 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9852 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9853 btstack_assert(false); 9854 #endif 9855 9856 // check if already in list 9857 btstack_linked_list_iterator_t it; 9858 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9859 while (btstack_linked_list_iterator_has_next(&it)) { 9860 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9861 if (entry->sid != advertising_sid) { 9862 continue; 9863 } 9864 if (entry->address_type != address_type) { 9865 continue; 9866 } 9867 if (memcmp(entry->address, address, 6) != 0) { 9868 continue; 9869 } 9870 // disallow if already scheduled to add 9871 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9872 return ERROR_CODE_COMMAND_DISALLOWED; 9873 } 9874 // still on controller, but scheduled to remove -> re-add 9875 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9876 return ERROR_CODE_SUCCESS; 9877 } 9878 // alloc and add to list 9879 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9880 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9881 entry->sid = advertising_sid; 9882 entry->address_type = address_type; 9883 (void)memcpy(entry->address, address, 6); 9884 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9885 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9886 return ERROR_CODE_SUCCESS; 9887 } 9888 9889 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9890 btstack_linked_list_iterator_t it; 9891 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9892 while (btstack_linked_list_iterator_has_next(&it)){ 9893 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9894 if (entry->sid != advertising_sid) { 9895 continue; 9896 } 9897 if (entry->address_type != address_type) { 9898 continue; 9899 } 9900 if (memcmp(entry->address, address, 6) != 0) { 9901 continue; 9902 } 9903 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9904 // remove from controller if already present 9905 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9906 } else { 9907 // directly remove entry from whitelist 9908 btstack_linked_list_iterator_remove(&it); 9909 btstack_memory_periodic_advertiser_list_entry_free(entry); 9910 } 9911 return ERROR_CODE_SUCCESS; 9912 } 9913 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9914 } 9915 9916 static void hci_periodic_advertiser_list_clear(void){ 9917 btstack_linked_list_iterator_t it; 9918 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9919 while (btstack_linked_list_iterator_has_next(&it)){ 9920 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9921 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9922 // remove from controller if already present 9923 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9924 continue; 9925 } 9926 // directly remove entry from whitelist 9927 btstack_linked_list_iterator_remove(&it); 9928 btstack_memory_periodic_advertiser_list_entry_free(entry); 9929 } 9930 } 9931 9932 uint8_t gap_periodic_advertiser_list_clear(void){ 9933 hci_periodic_advertiser_list_clear(); 9934 hci_run(); 9935 return ERROR_CODE_SUCCESS; 9936 } 9937 9938 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9939 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9940 if (status){ 9941 return status; 9942 } 9943 hci_run(); 9944 return ERROR_CODE_SUCCESS; 9945 } 9946 9947 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9948 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9949 if (status){ 9950 return status; 9951 } 9952 hci_run(); 9953 return ERROR_CODE_SUCCESS; 9954 } 9955 9956 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9957 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9958 // abort if already active 9959 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9960 return ERROR_CODE_COMMAND_DISALLOWED; 9961 } 9962 // store request 9963 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9964 hci_stack->le_periodic_sync_options = options; 9965 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9966 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9967 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9968 hci_stack->le_periodic_sync_skip = skip; 9969 hci_stack->le_periodic_sync_timeout = sync_timeout; 9970 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9971 9972 hci_run(); 9973 return ERROR_CODE_SUCCESS; 9974 } 9975 9976 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9977 // abort if not requested 9978 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9979 return ERROR_CODE_COMMAND_DISALLOWED; 9980 } 9981 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9982 hci_run(); 9983 return ERROR_CODE_SUCCESS; 9984 } 9985 9986 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9987 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9988 return ERROR_CODE_COMMAND_DISALLOWED; 9989 } 9990 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9991 hci_run(); 9992 return ERROR_CODE_SUCCESS; 9993 } 9994 9995 #endif 9996 #endif 9997 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9998 static hci_iso_stream_t * 9999 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10000 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10001 if (iso_stream != NULL){ 10002 iso_stream->iso_type = iso_type; 10003 iso_stream->state = state; 10004 iso_stream->group_id = group_id; 10005 iso_stream->stream_id = stream_id; 10006 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10007 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10008 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10009 } 10010 return iso_stream; 10011 } 10012 10013 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10014 btstack_linked_list_iterator_t it; 10015 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10016 while (btstack_linked_list_iterator_has_next(&it)){ 10017 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10018 if (iso_stream->cis_handle == con_handle ) { 10019 return iso_stream; 10020 } 10021 } 10022 return NULL; 10023 } 10024 10025 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10026 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10027 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10028 btstack_memory_hci_iso_stream_free(iso_stream); 10029 } 10030 10031 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10032 btstack_linked_list_iterator_t it; 10033 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10034 while (btstack_linked_list_iterator_has_next(&it)){ 10035 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10036 if ((iso_stream->group_id == group_id) && 10037 (iso_stream->iso_type == iso_type)){ 10038 btstack_linked_list_iterator_remove(&it); 10039 btstack_memory_hci_iso_stream_free(iso_stream); 10040 } 10041 } 10042 } 10043 10044 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10045 btstack_linked_list_iterator_t it; 10046 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10047 while (btstack_linked_list_iterator_has_next(&it)){ 10048 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10049 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10050 (iso_stream->group_id == group_id)){ 10051 btstack_linked_list_iterator_remove(&it); 10052 btstack_memory_hci_iso_stream_free(iso_stream); 10053 } 10054 } 10055 } 10056 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10057 btstack_linked_list_iterator_t it; 10058 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10059 while (btstack_linked_list_iterator_has_next(&it)){ 10060 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10061 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10062 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10063 } 10064 } 10065 } 10066 10067 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10068 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10069 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10070 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10071 return (sdu_len_offset + 2 + sdu_len) == size; 10072 } 10073 10074 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10075 if (iso_stream == NULL){ 10076 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10077 return; 10078 } 10079 10080 if (hci_stack->iso_packet_handler == NULL) { 10081 return; 10082 } 10083 10084 // parse header 10085 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10086 uint16_t data_total_length = little_endian_read_16(packet, 2); 10087 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10088 10089 // assert packet is complete 10090 if ((data_total_length + 4u) != size){ 10091 return; 10092 } 10093 10094 if ((pb_flag & 0x01) == 0){ 10095 if (pb_flag == 0x02){ 10096 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10097 if (hci_iso_sdu_complete(packet, size)) { 10098 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10099 } 10100 } else { 10101 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10102 if (size > sizeof(iso_stream->reassembly_buffer)){ 10103 return; 10104 } 10105 memcpy(iso_stream->reassembly_buffer, packet, size); 10106 // fix pb_flag 10107 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10108 iso_stream->reassembly_pos = size; 10109 } 10110 } else { 10111 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10112 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10113 if (ts_flag != 0){ 10114 return; 10115 } 10116 // append fragment 10117 if (iso_stream->reassembly_pos == 0){ 10118 return; 10119 } 10120 10121 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10122 // reset reassembly buffer 10123 iso_stream->reassembly_pos = 0; 10124 return; 10125 } 10126 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10127 iso_stream->reassembly_pos += data_total_length; 10128 10129 // deliver if last fragment and SDU complete 10130 if (pb_flag == 0x03){ 10131 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10132 // fix data_total_length 10133 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10134 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10135 } 10136 // reset reassembly buffer 10137 iso_stream->reassembly_pos = 0; 10138 } 10139 } 10140 } 10141 10142 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10143 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10144 uint16_t pos = 0; 10145 event[pos++] = HCI_EVENT_META_GAP; 10146 event[pos++] = 4 + (2 * big->num_bis); 10147 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10148 event[pos++] = status; 10149 event[pos++] = big->big_handle; 10150 event[pos++] = big->num_bis; 10151 uint8_t i; 10152 for (i=0;i<big->num_bis;i++){ 10153 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10154 pos += 2; 10155 } 10156 hci_emit_event(event, pos, 0); 10157 } 10158 10159 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10160 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10161 uint16_t pos = 0; 10162 event[pos++] = HCI_EVENT_META_GAP; 10163 event[pos++] = 4 + (2 * cig->num_cis); 10164 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10165 event[pos++] = status; 10166 event[pos++] = cig->cig_id; 10167 event[pos++] = cig->num_cis; 10168 uint8_t i; 10169 for (i=0;i<cig->num_cis;i++){ 10170 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10171 pos += 2; 10172 } 10173 hci_emit_event(event, pos, 0); 10174 } 10175 10176 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10177 uint16_t pos = 0; 10178 event[pos++] = HCI_EVENT_META_GAP; 10179 event[pos++] = 8; 10180 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10181 event[pos++] = status; 10182 event[pos++] = iso_stream->group_id; 10183 event[pos++] = iso_stream->stream_id; 10184 little_endian_store_16(event, pos, iso_stream->cis_handle); 10185 pos += 2; 10186 little_endian_store_16(event, pos, iso_stream->acl_handle); 10187 pos += 2; 10188 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10189 pos += 2; 10190 event[pos++] = iso_stream->number_of_subevents; 10191 event[pos++] = iso_stream->burst_number_c_to_p; 10192 event[pos++] = iso_stream->burst_number_p_to_c; 10193 event[pos++] = iso_stream->flush_timeout_c_to_p; 10194 event[pos++] = iso_stream->flush_timeout_p_to_c; 10195 return pos; 10196 } 10197 10198 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10199 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10200 // cache data before finalizing struct 10201 uint8_t event [17]; 10202 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10203 btstack_assert(pos <= sizeof(event)); 10204 if (status != ERROR_CODE_SUCCESS){ 10205 hci_iso_stream_finalize(iso_stream); 10206 } 10207 hci_emit_event(event, pos, 0); 10208 } 10209 10210 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10211 uint8_t event [4]; 10212 uint16_t pos = 0; 10213 event[pos++] = HCI_EVENT_META_GAP; 10214 event[pos++] = 2; 10215 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10216 event[pos++] = big->big_handle; 10217 hci_emit_event(event, pos, 0); 10218 } 10219 10220 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10221 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10222 uint16_t pos = 0; 10223 event[pos++] = HCI_EVENT_META_GAP; 10224 event[pos++] = 4; 10225 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10226 event[pos++] = status; 10227 event[pos++] = big_sync->big_handle; 10228 event[pos++] = big_sync->num_bis; 10229 uint8_t i; 10230 for (i=0;i<big_sync->num_bis;i++){ 10231 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10232 pos += 2; 10233 } 10234 hci_emit_event(event, pos, 0); 10235 } 10236 10237 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10238 uint8_t event [4]; 10239 uint16_t pos = 0; 10240 event[pos++] = HCI_EVENT_META_GAP; 10241 event[pos++] = 2; 10242 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10243 event[pos++] = big_handle; 10244 hci_emit_event(event, pos, 0); 10245 } 10246 10247 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10248 uint8_t event[6]; 10249 uint16_t pos = 0; 10250 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10251 event[pos++] = sizeof(event) - 2; 10252 event[pos++] = big->big_handle; 10253 event[pos++] = bis_index; 10254 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10255 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10256 } 10257 10258 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10259 uint8_t event[4]; 10260 uint16_t pos = 0; 10261 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10262 event[pos++] = sizeof(event) - 2; 10263 little_endian_store_16(event, pos, cis_con_handle); 10264 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10265 } 10266 10267 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10268 btstack_linked_list_iterator_t it; 10269 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10270 while (btstack_linked_list_iterator_has_next(&it)){ 10271 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10272 if ( big->big_handle == big_handle ) { 10273 return big; 10274 } 10275 } 10276 return NULL; 10277 } 10278 10279 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10280 btstack_linked_list_iterator_t it; 10281 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10282 while (btstack_linked_list_iterator_has_next(&it)){ 10283 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10284 if ( big_sync->big_handle == big_handle ) { 10285 return big_sync; 10286 } 10287 } 10288 return NULL; 10289 } 10290 10291 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10292 hci_stack->iso_packets_to_queue = num_packets; 10293 } 10294 10295 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10296 btstack_linked_list_iterator_t it; 10297 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10298 while (btstack_linked_list_iterator_has_next(&it)){ 10299 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10300 if ( cig->cig_id == cig_id ) { 10301 return cig; 10302 } 10303 } 10304 return NULL; 10305 } 10306 10307 static void hci_iso_notify_can_send_now(void){ 10308 10309 // BIG 10310 10311 btstack_linked_list_iterator_t it; 10312 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10313 while (btstack_linked_list_iterator_has_next(&it)){ 10314 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10315 // track number completed packet timestamps 10316 if (big->num_completed_timestamp_current_valid){ 10317 big->num_completed_timestamp_current_valid = false; 10318 if (big->num_completed_timestamp_previous_valid){ 10319 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10320 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10321 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10322 big->num_completed_timestamp_previous_ms); 10323 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10324 // to catch up, skip packet on all BIS 10325 uint8_t i; 10326 for (i=0;i<big->num_bis;i++){ 10327 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10328 if (iso_stream){ 10329 iso_stream->num_packets_to_skip++; 10330 } 10331 } 10332 } 10333 } 10334 big->num_completed_timestamp_previous_valid = true; 10335 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10336 } 10337 10338 if (big->can_send_now_requested){ 10339 // check if no outgoing iso packets pending and no can send now have to be emitted 10340 uint8_t i; 10341 bool can_send = true; 10342 uint8_t num_iso_queued_minimum = 0; 10343 for (i=0;i<big->num_bis;i++){ 10344 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10345 if (iso_stream == NULL) continue; 10346 // handle case where individual ISO packet was sent too late: 10347 // for each additionally queued packet, a new one needs to get skipped 10348 if (i==0){ 10349 num_iso_queued_minimum = iso_stream->num_packets_sent; 10350 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10351 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10352 iso_stream->num_packets_to_skip += num_packets_to_skip; 10353 iso_stream->num_packets_sent -= num_packets_to_skip; 10354 } 10355 // check if we can send now 10356 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10357 can_send = false; 10358 break; 10359 } 10360 } 10361 if (can_send){ 10362 // propagate can send now to individual streams 10363 big->can_send_now_requested = false; 10364 for (i=0;i<big->num_bis;i++){ 10365 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10366 iso_stream->emit_ready_to_send = true; 10367 } 10368 } 10369 } 10370 } 10371 10372 if (hci_stack->hci_packet_buffer_reserved) return; 10373 10374 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10375 while (btstack_linked_list_iterator_has_next(&it)){ 10376 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10377 // report bis ready 10378 uint8_t i; 10379 for (i=0;i<big->num_bis;i++){ 10380 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10381 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10382 iso_stream->emit_ready_to_send = false; 10383 hci_emit_bis_can_send_now(big, i); 10384 break; 10385 } 10386 } 10387 } 10388 10389 // CIS 10390 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10391 while (btstack_linked_list_iterator_has_next(&it)) { 10392 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10393 if ((iso_stream->can_send_now_requested) && 10394 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10395 iso_stream->can_send_now_requested = false; 10396 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10397 } 10398 } 10399 } 10400 10401 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10402 // make big handle unique and usuable for big and big sync 10403 if (hci_big_for_handle(big_handle) != NULL){ 10404 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10405 } 10406 if (hci_big_sync_for_handle(big_handle) != NULL){ 10407 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10408 } 10409 if (num_bis == 0){ 10410 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10411 } 10412 if (num_bis > MAX_NR_BIS){ 10413 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10414 } 10415 10416 // reserve ISO Streams 10417 uint8_t i; 10418 uint8_t status = ERROR_CODE_SUCCESS; 10419 for (i=0;i<num_bis;i++){ 10420 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10421 if (iso_stream == NULL) { 10422 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10423 break; 10424 } 10425 } 10426 10427 // free structs on error 10428 if (status != ERROR_CODE_SUCCESS){ 10429 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10430 } 10431 10432 return status; 10433 } 10434 10435 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10436 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10437 if (status != ERROR_CODE_SUCCESS){ 10438 return status; 10439 } 10440 10441 le_audio_big_t * big = storage; 10442 big->big_handle = big_params->big_handle; 10443 big->params = big_params; 10444 big->state = LE_AUDIO_BIG_STATE_CREATE; 10445 big->num_bis = big_params->num_bis; 10446 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10447 10448 hci_run(); 10449 10450 return ERROR_CODE_SUCCESS; 10451 } 10452 10453 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10454 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10455 if (status != ERROR_CODE_SUCCESS){ 10456 return status; 10457 } 10458 10459 le_audio_big_sync_t * big_sync = storage; 10460 big_sync->big_handle = big_sync_params->big_handle; 10461 big_sync->params = big_sync_params; 10462 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10463 big_sync->num_bis = big_sync_params->num_bis; 10464 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10465 10466 hci_run(); 10467 10468 return ERROR_CODE_SUCCESS; 10469 } 10470 10471 uint8_t gap_big_terminate(uint8_t big_handle){ 10472 le_audio_big_t * big = hci_big_for_handle(big_handle); 10473 if (big == NULL){ 10474 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10475 } 10476 switch (big->state){ 10477 case LE_AUDIO_BIG_STATE_CREATE: 10478 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10479 hci_emit_big_terminated(big); 10480 break; 10481 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10482 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10483 break; 10484 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10485 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10486 case LE_AUDIO_BIG_STATE_ACTIVE: 10487 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10488 hci_run(); 10489 break; 10490 default: 10491 return ERROR_CODE_COMMAND_DISALLOWED; 10492 } 10493 return ERROR_CODE_SUCCESS; 10494 } 10495 10496 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10497 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10498 if (big_sync == NULL){ 10499 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10500 } 10501 switch (big_sync->state){ 10502 case LE_AUDIO_BIG_STATE_CREATE: 10503 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10504 hci_emit_big_sync_stopped(big_handle); 10505 break; 10506 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10507 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10508 break; 10509 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10510 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10511 case LE_AUDIO_BIG_STATE_ACTIVE: 10512 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10513 hci_run(); 10514 break; 10515 default: 10516 return ERROR_CODE_COMMAND_DISALLOWED; 10517 } 10518 return ERROR_CODE_SUCCESS; 10519 } 10520 10521 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10522 le_audio_big_t * big = hci_big_for_handle(big_handle); 10523 if (big == NULL){ 10524 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10525 } 10526 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10527 return ERROR_CODE_COMMAND_DISALLOWED; 10528 } 10529 big->can_send_now_requested = true; 10530 hci_iso_notify_can_send_now(); 10531 return ERROR_CODE_SUCCESS; 10532 } 10533 10534 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10535 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10536 if (iso_stream == NULL){ 10537 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10538 } 10539 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10540 return ERROR_CODE_COMMAND_DISALLOWED; 10541 } 10542 iso_stream->can_send_now_requested = true; 10543 hci_iso_notify_can_send_now(); 10544 return ERROR_CODE_SUCCESS; 10545 } 10546 10547 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10548 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10549 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10550 } 10551 if (cig_params->num_cis == 0){ 10552 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10553 } 10554 if (cig_params->num_cis > MAX_NR_CIS){ 10555 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10556 } 10557 10558 // reserve ISO Streams 10559 uint8_t i; 10560 uint8_t status = ERROR_CODE_SUCCESS; 10561 for (i=0;i<cig_params->num_cis;i++){ 10562 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10563 if (iso_stream == NULL) { 10564 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10565 break; 10566 } 10567 } 10568 10569 // free structs on error 10570 if (status != ERROR_CODE_SUCCESS){ 10571 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10572 return status; 10573 } 10574 10575 le_audio_cig_t * cig = storage; 10576 cig->cig_id = cig_params->cig_id; 10577 cig->num_cis = cig_params->num_cis; 10578 cig->params = cig_params; 10579 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10580 for (i=0;i<cig->num_cis;i++){ 10581 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10582 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10583 cig->cis_setup_active[i] = false; 10584 cig->cis_established[i] = false; 10585 } 10586 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10587 10588 hci_run(); 10589 10590 return ERROR_CODE_SUCCESS; 10591 } 10592 10593 uint8_t gap_cig_remove(uint8_t cig_id){ 10594 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10595 if (cig == NULL){ 10596 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10597 } 10598 10599 // close active CIS 10600 uint8_t i; 10601 for (i=0;i<cig->num_cis;i++){ 10602 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10603 if (stream != NULL){ 10604 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10605 } 10606 } 10607 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10608 10609 hci_run(); 10610 10611 return ERROR_CODE_SUCCESS; 10612 } 10613 10614 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10615 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10616 if (cig == NULL){ 10617 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10618 } 10619 10620 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10621 return ERROR_CODE_COMMAND_DISALLOWED; 10622 } 10623 10624 // store ACL Connection Handles 10625 uint8_t i; 10626 for (i=0;i<cig->num_cis;i++){ 10627 // check that all con handles exist and store 10628 hci_con_handle_t cis_handle = cis_con_handles[i]; 10629 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10630 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10631 } 10632 uint8_t j; 10633 bool found = false; 10634 for (j=0;j<cig->num_cis;j++){ 10635 if (cig->cis_con_handles[j] == cis_handle){ 10636 cig->acl_con_handles[j] = acl_con_handles[j]; 10637 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10638 btstack_assert(iso_stream != NULL); 10639 iso_stream->acl_handle = acl_con_handles[j]; 10640 found = true; 10641 break; 10642 } 10643 } 10644 if (!found){ 10645 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10646 } 10647 } 10648 10649 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10650 hci_run(); 10651 10652 return ERROR_CODE_SUCCESS; 10653 } 10654 10655 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10656 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10657 if (iso_stream == NULL){ 10658 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10659 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10660 } 10661 10662 // set next state and continue 10663 iso_stream->state = state; 10664 hci_run(); 10665 return ERROR_CODE_SUCCESS; 10666 } 10667 10668 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10669 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10670 } 10671 10672 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10673 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10674 } 10675 10676 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10677 10678 // GAP Privacy - notify clients before random address update 10679 10680 static bool gap_privacy_client_all_ready(void){ 10681 // check if all ready 10682 btstack_linked_list_iterator_t it; 10683 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10684 while (btstack_linked_list_iterator_has_next(&it)) { 10685 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10686 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10687 return false; 10688 } 10689 } 10690 return true; 10691 } 10692 10693 static void gap_privacy_clients_handle_ready(void){ 10694 // clear 'ready' 10695 btstack_linked_list_iterator_t it; 10696 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10697 while (btstack_linked_list_iterator_has_next(&it)) { 10698 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10699 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10700 } 10701 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10702 hci_run(); 10703 } 10704 10705 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10706 btstack_linked_list_iterator_t it; 10707 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10708 while (btstack_linked_list_iterator_has_next(&it)) { 10709 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10710 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10711 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10712 (*client->callback)(client, new_random_address); 10713 } 10714 } 10715 if (gap_privacy_client_all_ready()){ 10716 gap_privacy_clients_handle_ready(); 10717 } 10718 } 10719 10720 void gap_privacy_client_register(gap_privacy_client_t * client){ 10721 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10722 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10723 } 10724 10725 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10726 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10727 if (gap_privacy_client_all_ready()){ 10728 gap_privacy_clients_handle_ready(); 10729 } 10730 } 10731 10732 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10733 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10734 } 10735 10736 #endif /* ENABLE_BLE */ 10737 10738 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10739 void hci_setup_test_connections_fuzz(void){ 10740 hci_connection_t * conn; 10741 10742 // default address: 66:55:44:33:00:01 10743 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10744 10745 // setup Controller info 10746 hci_stack->num_cmd_packets = 255; 10747 hci_stack->acl_packets_total_num = 255; 10748 10749 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10750 addr[5] = 0x01; 10751 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10752 conn->con_handle = addr[5]; 10753 conn->state = RECEIVED_CONNECTION_REQUEST; 10754 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10755 10756 // setup incoming Classic SCO connection with con handle 0x0002 10757 addr[5] = 0x02; 10758 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10759 conn->con_handle = addr[5]; 10760 conn->state = RECEIVED_CONNECTION_REQUEST; 10761 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10762 10763 // setup ready Classic ACL connection with con handle 0x0003 10764 addr[5] = 0x03; 10765 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10766 conn->con_handle = addr[5]; 10767 conn->state = OPEN; 10768 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10769 10770 // setup ready Classic SCO connection with con handle 0x0004 10771 addr[5] = 0x04; 10772 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10773 conn->con_handle = addr[5]; 10774 conn->state = OPEN; 10775 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10776 10777 // setup ready LE ACL connection with con handle 0x005 and public address 10778 addr[5] = 0x05; 10779 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10780 conn->con_handle = addr[5]; 10781 conn->state = OPEN; 10782 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10783 conn->sm_connection.sm_connection_encrypted = 1; 10784 } 10785 10786 void hci_free_connections_fuzz(void){ 10787 btstack_linked_list_iterator_t it; 10788 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10789 while (btstack_linked_list_iterator_has_next(&it)){ 10790 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10791 btstack_linked_list_iterator_remove(&it); 10792 btstack_memory_hci_connection_free(con); 10793 } 10794 } 10795 void hci_simulate_working_fuzz(void){ 10796 hci_stack->le_scanning_param_update = false; 10797 hci_init_done(); 10798 hci_stack->num_cmd_packets = 255; 10799 } 10800 #endif 10801