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 bool connection_was_cancelled = false; 3350 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3351 connection_was_cancelled = true; 3352 // reset state 3353 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3354 // get outgoing connection conn struct for direct connect 3355 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3356 conn = gap_get_outgoing_le_connection(); 3357 conn->state = SEND_CREATE_CONNECTION; 3358 } 3359 } 3360 3361 // free connection if cancelled by user (request == IDLE) 3362 bool cancelled_by_user = hci_stack->le_connecting_request == LE_CONNECTING_IDLE; 3363 if ((conn != NULL) && cancelled_by_user){ 3364 // remove entry 3365 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3366 btstack_memory_hci_connection_free( conn ); 3367 } 3368 3369 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for: 3370 // - outgoing error not caused by connection cancel 3371 // - connection cancelled by user 3372 // by this, no event is emitted for intermediate connection cancel required filterlist modification 3373 if ((connection_was_cancelled == false) || cancelled_by_user){ 3374 hci_emit_event(gap_event, sizeof(gap_event), 1); 3375 } 3376 return; 3377 } 3378 #endif 3379 3380 // on success, both hosts receive connection complete event 3381 if (role == HCI_ROLE_MASTER){ 3382 #ifdef ENABLE_LE_CENTRAL 3383 // if we're master, it was an outgoing connection 3384 // note: no hci_connection_t object exists yet for connect with whitelist 3385 3386 // if a identity addresses was used without enhanced connection complete event, 3387 // the connection complete event contains the current random address of the peer device. 3388 // This random address is needed in the case of a re-pairing 3389 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3390 conn = gap_get_outgoing_le_connection(); 3391 // if outgoing connection object is available, check if identity address was used. 3392 // if yes, track resolved random address and provide rpa 3393 // note: we don't update hci le subevent connection complete 3394 if (conn != NULL){ 3395 if (hci_is_le_identity_address_type(conn->address_type)){ 3396 memcpy(&gap_event[20], &gap_event[8], 6); 3397 gap_event[7] = conn->address_type; 3398 reverse_bd_addr(conn->address, &gap_event[8]); 3399 } 3400 } 3401 } 3402 3403 // we're done with it 3404 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3405 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3406 #endif 3407 } else { 3408 #ifdef ENABLE_LE_PERIPHERAL 3409 // if we're slave, it was an incoming connection, advertisements have stopped 3410 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3411 #endif 3412 } 3413 3414 // LE connections are auto-accepted, so just create a connection if there isn't one already 3415 if (!conn){ 3416 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3417 } 3418 3419 // no memory, sorry. 3420 if (!conn){ 3421 return; 3422 } 3423 3424 conn->state = OPEN; 3425 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3426 conn->le_connection_interval = conn_interval; 3427 3428 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3429 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3430 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3431 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3432 } 3433 #endif 3434 3435 #ifdef ENABLE_LE_PERIPHERAL 3436 if (role == HCI_ROLE_SLAVE){ 3437 hci_update_advertisements_enabled_for_current_roles(); 3438 } 3439 #endif 3440 3441 // init unenhanced att bearer mtu 3442 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3443 conn->att_connection.mtu_exchanged = false; 3444 3445 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3446 3447 // restart timer 3448 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3449 // btstack_run_loop_add_timer(&conn->timeout); 3450 3451 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3452 3453 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3454 hci_emit_event(gap_event, sizeof(gap_event), 1); 3455 3456 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3457 hci_emit_nr_connections_changed(); 3458 } 3459 #endif 3460 3461 #ifdef ENABLE_CLASSIC 3462 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){ 3463 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3464 // LEVEL_4 is tested by l2cap 3465 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3466 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3467 if (level >= LEVEL_3){ 3468 // MITM not possible without keyboard or display 3469 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3470 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3471 3472 // MITM possible if one side has keyboard and the other has keyboard or display 3473 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3474 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3475 3476 // MITM not possible if one side has only display and other side has no keyboard 3477 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3478 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3479 } 3480 // LEVEL 2 requires SSP, which is a given 3481 return true; 3482 } 3483 3484 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3485 // get requested security level 3486 gap_security_level_t requested_security_level = conn->requested_security_level; 3487 if (hci_stack->gap_secure_connections_only_mode){ 3488 requested_security_level = LEVEL_4; 3489 } 3490 3491 // assess security: LEVEL 4 requires SC 3492 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3493 if ((requested_security_level == LEVEL_4) && 3494 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3495 !hci_remote_sc_enabled(conn)){ 3496 log_info("Level 4 required, but SC not supported -> abort"); 3497 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3498 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3499 return; 3500 } 3501 3502 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3503 // - GAP/MOD/NBON/BV-02-C 3504 // - GAP/DM/NBON/BV-01-C 3505 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3506 switch (conn->io_cap_response_auth_req){ 3507 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3508 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3509 if (hci_stack->bondable == false){ 3510 log_info("Dedicated vs. non-bondable -> abort"); 3511 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3512 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3513 return; 3514 } 3515 default: 3516 break; 3517 } 3518 } 3519 3520 // assess security based on io capabilities 3521 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3522 // responder: fully validate io caps of both sides as well as OOB data 3523 bool security_possible = false; 3524 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3525 3526 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3527 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3528 // so we merge the OOB data availability 3529 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3530 if (conn->classic_oob_c_192 != NULL){ 3531 have_oob_data |= 1; 3532 } 3533 if (conn->classic_oob_c_256 != NULL){ 3534 have_oob_data |= 2; 3535 } 3536 // for up to Level 3, either P-192 as well as P-256 will do 3537 // 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 3538 // if remote does not SC, we should not receive P-256 data either 3539 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3540 security_possible = true; 3541 } 3542 // for Level 4, P-256 is needed 3543 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3544 security_possible = true; 3545 } 3546 #endif 3547 3548 if (security_possible == false){ 3549 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3550 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3551 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3552 return; 3553 } 3554 } else { 3555 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3556 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3557 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3558 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3559 log_info("Level 3+ required, but no input/output -> abort"); 3560 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3561 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3562 return; 3563 } 3564 #endif 3565 #endif 3566 } 3567 3568 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3569 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3570 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3571 } else { 3572 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3573 } 3574 #endif 3575 } 3576 3577 #endif 3578 3579 static void event_handler(uint8_t *packet, uint16_t size){ 3580 3581 uint16_t event_length = packet[1]; 3582 3583 // assert packet is complete 3584 if (size != (event_length + 2u)){ 3585 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3586 return; 3587 } 3588 3589 hci_con_handle_t handle; 3590 hci_connection_t * conn; 3591 int i; 3592 3593 #ifdef ENABLE_CLASSIC 3594 hci_link_type_t link_type; 3595 bd_addr_t addr; 3596 bd_addr_type_t addr_type; 3597 #endif 3598 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3599 hci_iso_stream_t * iso_stream; 3600 le_audio_big_t * big; 3601 le_audio_big_sync_t * big_sync; 3602 #endif 3603 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3604 btstack_linked_list_iterator_t it; 3605 #endif 3606 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3607 uint8_t advertising_handle; 3608 #endif 3609 3610 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3611 3612 switch (hci_event_packet_get_type(packet)) { 3613 3614 case HCI_EVENT_COMMAND_COMPLETE: 3615 handle_command_complete_event(packet, size); 3616 break; 3617 3618 case HCI_EVENT_COMMAND_STATUS: 3619 handle_command_status_event(packet, size); 3620 break; 3621 3622 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3623 if (size < 3) return; 3624 uint16_t num_handles = packet[2]; 3625 if (size != (3u + num_handles * 4u)) return; 3626 #ifdef ENABLE_CLASSIC 3627 bool notify_sco = false; 3628 #endif 3629 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3630 bool notify_iso = false; 3631 #endif 3632 uint16_t offset = 3; 3633 for (i=0; i<num_handles;i++){ 3634 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3635 offset += 2u; 3636 uint16_t num_packets = little_endian_read_16(packet, offset); 3637 offset += 2u; 3638 3639 conn = hci_connection_for_handle(handle); 3640 if (conn != NULL) { 3641 3642 if (conn->num_packets_sent >= num_packets) { 3643 conn->num_packets_sent -= num_packets; 3644 } else { 3645 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3646 conn->num_packets_sent = 0; 3647 } 3648 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3649 #ifdef ENABLE_CLASSIC 3650 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3651 notify_sco = true; 3652 } 3653 #endif 3654 } 3655 3656 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3657 hci_controller_dump_packets(); 3658 #endif 3659 3660 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3661 if (conn == NULL){ 3662 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3663 if (iso_stream != NULL){ 3664 if (iso_stream->num_packets_sent >= num_packets) { 3665 iso_stream->num_packets_sent -= num_packets; 3666 } else { 3667 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3668 iso_stream->num_packets_sent = 0; 3669 } 3670 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3671 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3672 if (big != NULL){ 3673 big->num_completed_timestamp_current_valid = true; 3674 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3675 } 3676 } 3677 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3678 num_packets, handle, iso_stream->num_packets_sent); 3679 notify_iso = true; 3680 } 3681 } 3682 #endif 3683 } 3684 3685 #ifdef ENABLE_CLASSIC 3686 if (notify_sco){ 3687 hci_notify_if_sco_can_send_now(); 3688 } 3689 #endif 3690 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3691 if (notify_iso){ 3692 hci_iso_notify_can_send_now(); 3693 } 3694 #endif 3695 break; 3696 } 3697 3698 #ifdef ENABLE_CLASSIC 3699 case HCI_EVENT_FLUSH_OCCURRED: 3700 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3701 handle = hci_event_flush_occurred_get_handle(packet); 3702 conn = hci_connection_for_handle(handle); 3703 if (conn) { 3704 log_info("Flush occurred, disconnect 0x%04x", handle); 3705 conn->state = SEND_DISCONNECT; 3706 } 3707 break; 3708 3709 case HCI_EVENT_INQUIRY_COMPLETE: 3710 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3711 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3712 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3713 hci_emit_event(event, sizeof(event), 1); 3714 } 3715 break; 3716 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3717 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3718 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3719 } 3720 break; 3721 case HCI_EVENT_CONNECTION_REQUEST: 3722 reverse_bd_addr(&packet[2], addr); 3723 link_type = (hci_link_type_t) packet[11]; 3724 3725 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3726 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3727 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3728 bd_addr_copy(hci_stack->decline_addr, addr); 3729 break; 3730 } 3731 3732 if (hci_stack->gap_classic_accept_callback != NULL){ 3733 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3734 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3735 bd_addr_copy(hci_stack->decline_addr, addr); 3736 break; 3737 } 3738 } 3739 3740 // TODO: eval COD 8-10 3741 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3742 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3743 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3744 if (!conn) { 3745 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3746 } 3747 if (!conn) { 3748 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3749 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3750 bd_addr_copy(hci_stack->decline_addr, addr); 3751 hci_run(); 3752 // avoid event to higher layer 3753 return; 3754 } 3755 conn->state = RECEIVED_CONNECTION_REQUEST; 3756 // store info about eSCO 3757 if (link_type == HCI_LINK_TYPE_ESCO){ 3758 conn->remote_supported_features[0] |= 1; 3759 } 3760 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3761 if (addr_type == BD_ADDR_TYPE_SCO){ 3762 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3763 // ACL exists unless fuzzing 3764 if (acl_conn != NULL) { 3765 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3766 } 3767 } 3768 hci_run(); 3769 break; 3770 3771 case HCI_EVENT_CONNECTION_COMPLETE: 3772 // Connection management 3773 reverse_bd_addr(&packet[5], addr); 3774 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3775 addr_type = BD_ADDR_TYPE_ACL; 3776 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3777 if (conn) { 3778 switch (conn->state){ 3779 // expected states 3780 case ACCEPTED_CONNECTION_REQUEST: 3781 case SENT_CREATE_CONNECTION: 3782 break; 3783 // unexpected state -> ignore 3784 default: 3785 // don't forward event to app 3786 return; 3787 } 3788 if (!packet[2]){ 3789 conn->state = OPEN; 3790 conn->con_handle = little_endian_read_16(packet, 3); 3791 3792 // trigger write supervision timeout if we're master 3793 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3794 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3795 } 3796 3797 // trigger write automatic flush timeout 3798 if (hci_stack->automatic_flush_timeout != 0){ 3799 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3800 } 3801 3802 // restart timer 3803 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3804 btstack_run_loop_add_timer(&conn->timeout); 3805 3806 // trigger remote features for dedicated bonding 3807 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3808 hci_trigger_remote_features_for_connection(conn); 3809 } 3810 3811 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3812 3813 hci_emit_nr_connections_changed(); 3814 } else { 3815 // connection failed 3816 hci_handle_connection_failed(conn, packet[2]); 3817 } 3818 } 3819 break; 3820 3821 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3822 reverse_bd_addr(&packet[5], addr); 3823 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3824 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3825 3826 // SCO exists unless fuzzer 3827 if (conn == NULL) break; 3828 3829 if (packet[2] != ERROR_CODE_SUCCESS){ 3830 // connection failed, remove entry 3831 hci_handle_connection_failed(conn, packet[2]); 3832 break; 3833 } 3834 3835 conn->state = OPEN; 3836 conn->con_handle = little_endian_read_16(packet, 3); 3837 3838 // update sco payload length for eSCO connections 3839 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3840 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3841 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3842 } 3843 3844 #ifdef ENABLE_SCO_OVER_HCI 3845 // update SCO 3846 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3847 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3848 } 3849 // trigger can send now 3850 if (hci_have_usb_transport()){ 3851 hci_stack->sco_can_send_now = true; 3852 } 3853 3854 // setup implict sco flow control 3855 conn->sco_tx_ready = 0; 3856 conn->sco_tx_active = 0; 3857 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3858 3859 #endif 3860 #ifdef HAVE_SCO_TRANSPORT 3861 // configure sco transport 3862 if (hci_stack->sco_transport != NULL){ 3863 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3864 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3865 } 3866 #endif 3867 break; 3868 3869 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3870 handle = little_endian_read_16(packet, 3); 3871 conn = hci_connection_for_handle(handle); 3872 if (!conn) break; 3873 if (!packet[2]){ 3874 const uint8_t * features = &packet[5]; 3875 hci_handle_remote_features_page_0(conn, features); 3876 3877 // read extended features if possible 3878 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3879 && ((conn->remote_supported_features[0] & 2) != 0)) { 3880 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3881 break; 3882 } 3883 } 3884 hci_handle_remote_features_received(conn); 3885 break; 3886 3887 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3888 handle = little_endian_read_16(packet, 3); 3889 conn = hci_connection_for_handle(handle); 3890 if (!conn) break; 3891 // status = ok, page = 1 3892 if (!packet[2]) { 3893 uint8_t page_number = packet[5]; 3894 uint8_t maximum_page_number = packet[6]; 3895 const uint8_t * features = &packet[7]; 3896 bool done = false; 3897 switch (page_number){ 3898 case 1: 3899 hci_handle_remote_features_page_1(conn, features); 3900 if (maximum_page_number >= 2){ 3901 // get Secure Connections (Controller) from Page 2 if available 3902 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3903 } else { 3904 // otherwise, assume SC (Controller) == SC (Host) 3905 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3906 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3907 } 3908 done = true; 3909 } 3910 break; 3911 case 2: 3912 hci_handle_remote_features_page_2(conn, features); 3913 done = true; 3914 break; 3915 default: 3916 break; 3917 } 3918 if (!done) break; 3919 } 3920 hci_handle_remote_features_received(conn); 3921 break; 3922 3923 case HCI_EVENT_LINK_KEY_REQUEST: 3924 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3925 hci_event_link_key_request_get_bd_addr(packet, addr); 3926 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3927 if (!conn) break; 3928 3929 // lookup link key in db if not cached 3930 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3931 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3932 } 3933 3934 // response sent by hci_run() 3935 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3936 #endif 3937 break; 3938 3939 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3940 hci_event_link_key_request_get_bd_addr(packet, addr); 3941 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3942 if (!conn) break; 3943 3944 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3945 3946 // CVE-2020-26555: ignore NULL link key 3947 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3948 if (btstack_is_null(&packet[8], 16)) break; 3949 3950 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3951 // Change Connection Encryption keeps link key type 3952 if (link_key_type != CHANGED_COMBINATION_KEY){ 3953 conn->link_key_type = link_key_type; 3954 } 3955 3956 // cache link key. link keys stored in little-endian format for legacy reasons 3957 memcpy(&conn->link_key, &packet[8], 16); 3958 3959 // only store link key: 3960 // - if bondable enabled 3961 if (hci_stack->bondable == false) break; 3962 // - if security level sufficient 3963 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3964 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3965 break; 3966 } 3967 3968 case HCI_EVENT_PIN_CODE_REQUEST: 3969 hci_event_pin_code_request_get_bd_addr(packet, addr); 3970 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3971 if (!conn) break; 3972 3973 hci_pairing_started(conn, false); 3974 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3975 if (!hci_stack->bondable ){ 3976 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3977 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3978 hci_run(); 3979 return; 3980 } 3981 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3982 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3983 log_info("Level 4 required, but SC not supported -> abort"); 3984 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3985 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3986 hci_run(); 3987 return; 3988 } 3989 break; 3990 3991 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3992 hci_event_io_capability_response_get_bd_addr(packet, addr); 3993 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3994 if (!conn) break; 3995 3996 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3997 hci_pairing_started(conn, true); 3998 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3999 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 4000 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4001 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 4002 #endif 4003 break; 4004 4005 case HCI_EVENT_IO_CAPABILITY_REQUEST: 4006 hci_event_io_capability_response_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_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4011 hci_connection_timestamp(conn); 4012 hci_pairing_started(conn, true); 4013 break; 4014 4015 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4016 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4017 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4018 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4019 if (!conn) break; 4020 4021 hci_connection_timestamp(conn); 4022 4023 hci_pairing_started(conn, true); 4024 4025 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4026 break; 4027 #endif 4028 4029 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4030 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4031 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4032 if (!conn) break; 4033 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4034 if (hci_stack->ssp_auto_accept){ 4035 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4036 }; 4037 } else { 4038 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4039 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4040 // don't forward event to app 4041 hci_run(); 4042 return; 4043 } 4044 break; 4045 4046 case HCI_EVENT_USER_PASSKEY_REQUEST: 4047 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4048 if (hci_stack->ssp_auto_accept){ 4049 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4050 }; 4051 break; 4052 4053 case HCI_EVENT_MODE_CHANGE: 4054 handle = hci_event_mode_change_get_handle(packet); 4055 conn = hci_connection_for_handle(handle); 4056 if (!conn) break; 4057 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4058 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4059 break; 4060 #endif 4061 4062 case HCI_EVENT_ENCRYPTION_CHANGE: 4063 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4064 handle = hci_event_encryption_change_get_connection_handle(packet); 4065 conn = hci_connection_for_handle(handle); 4066 if (!conn) break; 4067 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4068 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4069 if (encryption_enabled){ 4070 if (hci_is_le_connection(conn)){ 4071 // For LE, we accept connection as encrypted 4072 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4073 } 4074 #ifdef ENABLE_CLASSIC 4075 else { 4076 4077 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4078 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4079 bool connected_uses_aes_ccm = encryption_enabled == 2; 4080 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4081 #ifdef ENABLE_TESTING_SUPPORT 4082 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4083 // - GAP/SEC/SEM/BI-31-C 4084 // - GAP/SEC/SEM/BI-32-C 4085 // - GAP/SEC/SEM/BI-33-C 4086 4087 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4088 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4089 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4090 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4091 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4092 } 4093 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4094 conn->link_key_type, new_link_key_type); 4095 conn->link_key_type = new_link_key_type; 4096 #else 4097 log_info("SC during pairing, but only E0 now -> abort"); 4098 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4099 break; 4100 #endif 4101 } 4102 4103 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4104 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4105 if (connected_uses_aes_ccm){ 4106 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4107 } 4108 #else 4109 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4110 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4111 // for all operations that require any security. See BIAS attacks. 4112 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4113 #endif 4114 // validate encryption key size 4115 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4116 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4117 // already got encryption key size 4118 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4119 } else { 4120 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4121 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4122 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4123 } else { 4124 // if not, pretend everything is perfect 4125 hci_handle_read_encryption_key_size_complete(conn, 16); 4126 } 4127 } 4128 } 4129 #endif 4130 } else { 4131 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4132 } 4133 } else { 4134 #ifdef ENABLE_CLASSIC 4135 if (!hci_is_le_connection(conn)){ 4136 uint8_t status = hci_event_encryption_change_get_status(packet); 4137 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4138 conn->bonding_flags &= ~BONDING_DEDICATED; 4139 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4140 conn->bonding_status = status; 4141 } 4142 // trigger security update -> level 0 4143 hci_handle_mutual_authentication_completed(conn); 4144 } 4145 #endif 4146 } 4147 4148 break; 4149 4150 #ifdef ENABLE_CLASSIC 4151 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4152 handle = hci_event_authentication_complete_get_connection_handle(packet); 4153 conn = hci_connection_for_handle(handle); 4154 if (!conn) break; 4155 4156 // clear authentication active flag 4157 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4158 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4159 4160 // authenticated only if auth status == 0 4161 if (hci_event_authentication_complete_get_status(packet) == 0){ 4162 // authenticated 4163 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4164 4165 // If not already encrypted, start encryption 4166 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4167 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4168 break; 4169 } 4170 } 4171 4172 // emit updated security level (will be 0 if not authenticated) 4173 hci_handle_mutual_authentication_completed(conn); 4174 break; 4175 4176 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4177 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4178 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4179 if (!conn) break; 4180 4181 // treat successfully paired connection as authenticated 4182 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4183 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4184 } 4185 4186 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4187 break; 4188 #endif 4189 4190 // HCI_EVENT_DISCONNECTION_COMPLETE 4191 // has been split, to first notify stack before shutting connection down 4192 // see end of function, too. 4193 case HCI_EVENT_DISCONNECTION_COMPLETE: 4194 if (packet[2]) break; // status != 0 4195 handle = little_endian_read_16(packet, 3); 4196 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4197 if (hci_stack->acl_fragmentation_total_size > 0u) { 4198 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4199 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4200 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4201 hci_stack->acl_fragmentation_total_size = 0; 4202 hci_stack->acl_fragmentation_pos = 0; 4203 if (release_buffer){ 4204 hci_release_packet_buffer(); 4205 } 4206 } 4207 } 4208 4209 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4210 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4211 if (hci_stack->iso_fragmentation_total_size > 0u) { 4212 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4213 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4214 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4215 hci_stack->iso_fragmentation_total_size = 0; 4216 hci_stack->iso_fragmentation_pos = 0; 4217 if (release_buffer){ 4218 hci_release_packet_buffer(); 4219 } 4220 } 4221 } 4222 4223 // finalize iso stream for CIS handle 4224 iso_stream = hci_iso_stream_for_con_handle(handle); 4225 if (iso_stream != NULL){ 4226 hci_iso_stream_finalize(iso_stream); 4227 break; 4228 } 4229 4230 // finalize iso stream(s) for ACL handle 4231 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4232 while (btstack_linked_list_iterator_has_next(&it)){ 4233 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4234 if (iso_stream->acl_handle == handle ) { 4235 hci_iso_stream_finalize(iso_stream); 4236 } 4237 } 4238 #endif 4239 4240 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4241 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4242 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4243 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4244 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4245 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4246 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4247 hci_stack->num_cmd_packets = 1; 4248 } 4249 #endif 4250 4251 conn = hci_connection_for_handle(handle); 4252 if (!conn) break; 4253 #ifdef ENABLE_CLASSIC 4254 // pairing failed if it was ongoing 4255 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4256 #endif 4257 4258 // emit dedicatd bonding event 4259 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4260 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4261 } 4262 4263 // mark connection for shutdown, stop timers, reset state 4264 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4265 hci_connection_stop_timer(conn); 4266 hci_connection_init(conn); 4267 4268 #ifdef ENABLE_BLE 4269 #ifdef ENABLE_LE_PERIPHERAL 4270 // re-enable advertisements for le connections if active 4271 if (hci_is_le_connection(conn)){ 4272 hci_update_advertisements_enabled_for_current_roles(); 4273 } 4274 #endif 4275 #endif 4276 break; 4277 4278 case HCI_EVENT_HARDWARE_ERROR: 4279 log_error("Hardware Error: 0x%02x", packet[2]); 4280 if (hci_stack->hardware_error_callback){ 4281 (*hci_stack->hardware_error_callback)(packet[2]); 4282 } else { 4283 // if no special requests, just reboot stack 4284 hci_power_control_off(); 4285 hci_power_control_on(); 4286 } 4287 break; 4288 4289 #ifdef ENABLE_CLASSIC 4290 case HCI_EVENT_ROLE_CHANGE: 4291 if (packet[2]) break; // status != 0 4292 reverse_bd_addr(&packet[3], addr); 4293 addr_type = BD_ADDR_TYPE_ACL; 4294 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4295 if (!conn) break; 4296 conn->role = (hci_role_t) packet[9]; 4297 break; 4298 #endif 4299 4300 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4301 // release packet buffer only for asynchronous transport and if there are not further fragments 4302 if (hci_transport_synchronous()) { 4303 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4304 return; // instead of break: to avoid re-entering hci_run() 4305 } 4306 hci_stack->acl_fragmentation_tx_active = 0; 4307 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4308 hci_stack->iso_fragmentation_tx_active = 0; 4309 if (hci_stack->iso_fragmentation_total_size) break; 4310 #endif 4311 if (hci_stack->acl_fragmentation_total_size) break; 4312 4313 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4314 btstack_assert(hci_stack->hci_packet_buffer_reserved); 4315 hci_stack->hci_packet_buffer_reserved = false; 4316 4317 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4318 hci_iso_notify_can_send_now(); 4319 #endif 4320 // L2CAP receives this event via the hci_emit_event below 4321 4322 #ifdef ENABLE_CLASSIC 4323 // For SCO, we do the can_send_now_check here 4324 hci_notify_if_sco_can_send_now(); 4325 #endif 4326 break; 4327 4328 #ifdef ENABLE_CLASSIC 4329 case HCI_EVENT_SCO_CAN_SEND_NOW: 4330 // For SCO, we do the can_send_now_check here 4331 hci_stack->sco_can_send_now = true; 4332 hci_notify_if_sco_can_send_now(); 4333 return; 4334 4335 // explode inquriy results for easier consumption 4336 case HCI_EVENT_INQUIRY_RESULT: 4337 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4338 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4339 gap_inquiry_explode(packet, size); 4340 break; 4341 #endif 4342 4343 #ifdef ENABLE_BLE 4344 case HCI_EVENT_LE_META: 4345 switch (packet[2]){ 4346 #ifdef ENABLE_LE_CENTRAL 4347 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4348 if (!hci_stack->le_scanning_enabled) break; 4349 le_handle_advertisement_report(packet, size); 4350 break; 4351 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4352 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4353 if (!hci_stack->le_scanning_enabled) break; 4354 le_handle_extended_advertisement_report(packet, size); 4355 break; 4356 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4357 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4358 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4359 break; 4360 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4361 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4362 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4363 while (btstack_linked_list_iterator_has_next(&it)) { 4364 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4365 if (advertising_set->advertising_handle == advertising_handle){ 4366 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4367 } 4368 } 4369 break; 4370 #endif 4371 #endif 4372 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4373 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4374 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4375 hci_handle_le_connection_complete_event(packet); 4376 break; 4377 4378 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4379 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4380 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4381 conn = hci_connection_for_handle(handle); 4382 if (!conn) break; 4383 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4384 break; 4385 4386 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4387 // connection 4388 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4389 conn = hci_connection_for_handle(handle); 4390 if (conn) { 4391 // read arguments 4392 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4393 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4394 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4395 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4396 4397 // validate against current connection parameter range 4398 le_connection_parameter_range_t existing_range; 4399 gap_get_connection_parameter_range(&existing_range); 4400 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4401 if (update_parameter){ 4402 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4403 conn->le_conn_interval_min = le_conn_interval_min; 4404 conn->le_conn_interval_max = le_conn_interval_max; 4405 conn->le_conn_latency = le_conn_latency; 4406 conn->le_supervision_timeout = le_supervision_timeout; 4407 } else { 4408 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4409 } 4410 } 4411 break; 4412 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4413 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4414 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4415 conn = hci_connection_for_handle(handle); 4416 if (conn) { 4417 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4418 } 4419 break; 4420 #endif 4421 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4422 case HCI_SUBEVENT_LE_CIS_REQUEST: 4423 // incoming CIS request, allocate iso stream object and cache metadata 4424 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4425 hci_subevent_le_cis_request_get_cig_id(packet), 4426 hci_subevent_le_cis_request_get_cis_id(packet)); 4427 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4428 if (iso_stream != NULL){ 4429 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4430 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4431 } 4432 break; 4433 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4434 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4435 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4436 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4437 iso_stream = hci_iso_stream_for_con_handle(handle); 4438 btstack_assert(iso_stream != NULL); 4439 // track connection info 4440 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4441 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4442 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4443 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4444 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4445 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4446 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4447 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4448 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4449 // CIS Accept by Peripheral 4450 if (status == ERROR_CODE_SUCCESS){ 4451 if (iso_stream->max_sdu_p_to_c > 0){ 4452 // we're peripheral and we will send data 4453 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4454 } else { 4455 // we're peripheral and we will only receive data 4456 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4457 } 4458 } else { 4459 hci_cis_handle_created(iso_stream, status); 4460 } 4461 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4462 } else { 4463 // CIG Setup by Central 4464 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4465 btstack_assert(cig != NULL); 4466 // update iso stream state 4467 if (status == ERROR_CODE_SUCCESS){ 4468 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4469 } else { 4470 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4471 } 4472 // update cig state 4473 uint8_t i; 4474 for (i=0;i<cig->num_cis;i++){ 4475 if (cig->cis_con_handles[i] == handle){ 4476 cig->cis_setup_active[i] = false; 4477 if (status == ERROR_CODE_SUCCESS){ 4478 cig->cis_established[i] = true; 4479 } else { 4480 hci_cis_handle_created(iso_stream, status); 4481 } 4482 } 4483 } 4484 4485 // trigger iso path setup if complete 4486 bool cis_setup_active = false; 4487 for (i=0;i<cig->num_cis;i++){ 4488 cis_setup_active |= cig->cis_setup_active[i]; 4489 } 4490 if (cis_setup_active == false){ 4491 cig->state_vars.next_cis = 0; 4492 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4493 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4494 } 4495 } 4496 } 4497 break; 4498 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4499 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4500 big = hci_big_for_handle(packet[4]); 4501 if (big != NULL){ 4502 uint8_t status = packet[3]; 4503 if (status == ERROR_CODE_SUCCESS){ 4504 // store bis_con_handles and trigger iso path setup 4505 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4506 uint8_t i; 4507 for (i=0;i<num_bis;i++){ 4508 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4509 big->bis_con_handles[i] = bis_handle; 4510 // assign bis handle 4511 btstack_linked_list_iterator_t it; 4512 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4513 while (btstack_linked_list_iterator_has_next(&it)){ 4514 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4515 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4516 (iso_stream->group_id == big->big_handle)){ 4517 iso_stream->cis_handle = bis_handle; 4518 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4519 break; 4520 } 4521 } 4522 } 4523 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4524 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4525 big->state_vars.next_bis = 0; 4526 } 4527 } else { 4528 // create BIG failed or has been stopped by us 4529 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4530 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4531 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4532 hci_emit_big_created(big, status); 4533 } else { 4534 hci_emit_big_terminated(big); 4535 } 4536 } 4537 } 4538 break; 4539 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4540 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4541 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4542 if (big != NULL){ 4543 // finalize associated ISO streams 4544 btstack_linked_list_iterator_t it; 4545 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4546 while (btstack_linked_list_iterator_has_next(&it)){ 4547 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4548 if (iso_stream->group_id == big->big_handle){ 4549 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4550 btstack_linked_list_iterator_remove(&it); 4551 btstack_memory_hci_iso_stream_free(iso_stream); 4552 } 4553 } 4554 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4555 switch (big->state){ 4556 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4557 hci_emit_big_created(big, big->state_vars.status); 4558 break; 4559 default: 4560 hci_emit_big_terminated(big); 4561 break; 4562 } 4563 } 4564 break; 4565 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4566 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4567 big_sync = hci_big_sync_for_handle(packet[4]); 4568 if (big_sync != NULL){ 4569 uint8_t status = packet[3]; 4570 uint8_t big_handle = packet[4]; 4571 if (status == ERROR_CODE_SUCCESS){ 4572 // store bis_con_handles and trigger iso path setup 4573 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4574 uint8_t i; 4575 for (i=0;i<num_bis;i++){ 4576 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4577 big_sync->bis_con_handles[i] = bis_handle; 4578 // setup iso_stream_t 4579 btstack_linked_list_iterator_t it; 4580 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4581 while (btstack_linked_list_iterator_has_next(&it)){ 4582 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4583 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4584 (iso_stream->group_id == big_sync->big_handle)){ 4585 iso_stream->cis_handle = bis_handle; 4586 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4587 break; 4588 } 4589 } 4590 } 4591 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4592 // trigger iso path setup 4593 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4594 big_sync->state_vars.next_bis = 0; 4595 } 4596 } else { 4597 // create BIG Sync failed or has been stopped by us 4598 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4599 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4600 hci_emit_big_sync_created(big_sync, status); 4601 } else { 4602 hci_emit_big_sync_stopped(big_handle); 4603 } 4604 } 4605 } 4606 break; 4607 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4608 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4609 big_sync = hci_big_sync_for_handle(packet[4]); 4610 if (big_sync != NULL){ 4611 uint8_t big_handle = packet[4]; 4612 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4613 hci_emit_big_sync_stopped(big_handle); 4614 } 4615 break; 4616 #endif 4617 default: 4618 break; 4619 } 4620 break; 4621 #endif 4622 case HCI_EVENT_VENDOR_SPECIFIC: 4623 // Vendor specific commands often create vendor specific event instead of num completed packets 4624 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4625 switch (hci_stack->manufacturer){ 4626 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4627 hci_stack->num_cmd_packets = 1; 4628 break; 4629 default: 4630 break; 4631 } 4632 break; 4633 default: 4634 break; 4635 } 4636 4637 handle_event_for_current_stack_state(packet, size); 4638 4639 // notify upper stack 4640 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4641 4642 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4643 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4644 handle = little_endian_read_16(packet, 3); 4645 hci_connection_t * aConn = hci_connection_for_handle(handle); 4646 // discard connection if app did not trigger a reconnect in the event handler 4647 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4648 hci_shutdown_connection(aConn); 4649 } 4650 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4651 hci_controller_dump_packets(); 4652 #endif 4653 } 4654 4655 // execute main loop 4656 hci_run(); 4657 } 4658 4659 #ifdef ENABLE_CLASSIC 4660 4661 static void sco_handler(uint8_t * packet, uint16_t size){ 4662 // lookup connection struct 4663 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4664 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4665 if (!conn) return; 4666 4667 #ifdef ENABLE_SCO_OVER_HCI 4668 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4669 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4670 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4671 packet[2] = 0x3c; 4672 memmove(&packet[3], &packet[23], 63); 4673 size = 63; 4674 } 4675 } 4676 4677 if (hci_have_usb_transport()){ 4678 // Nothing to do 4679 } else { 4680 // 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); 4681 if (hci_stack->synchronous_flow_control_enabled == 0){ 4682 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4683 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4684 if (conn->sco_tx_active == 0){ 4685 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4686 conn->sco_tx_active = 1; 4687 conn->sco_tx_ready = max_sco_packets; 4688 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4689 hci_notify_if_sco_can_send_now(); 4690 } 4691 } else { 4692 if (conn->sco_tx_ready < max_sco_packets){ 4693 conn->sco_tx_ready++; 4694 } 4695 hci_notify_if_sco_can_send_now(); 4696 } 4697 } 4698 } 4699 #endif 4700 4701 // deliver to app 4702 if (hci_stack->sco_packet_handler) { 4703 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4704 } 4705 4706 #ifdef HAVE_SCO_TRANSPORT 4707 // We can send one packet for each received packet 4708 conn->sco_tx_ready++; 4709 hci_notify_if_sco_can_send_now(); 4710 #endif 4711 4712 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4713 conn->num_packets_completed++; 4714 hci_stack->host_completed_packets = 1; 4715 hci_run(); 4716 #endif 4717 } 4718 #endif 4719 4720 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4721 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4722 // propagate ISO packets received as ACL 4723 hci_iso_stream_t * iso_stream = NULL; 4724 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4725 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4726 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4727 if (iso_stream != NULL){ 4728 packet_type = HCI_ISO_DATA_PACKET; 4729 } 4730 } 4731 #endif 4732 4733 hci_dump_packet(packet_type, 1, packet, size); 4734 switch (packet_type) { 4735 case HCI_EVENT_PACKET: 4736 event_handler(packet, size); 4737 break; 4738 case HCI_ACL_DATA_PACKET: 4739 acl_handler(packet, size); 4740 break; 4741 #ifdef ENABLE_CLASSIC 4742 case HCI_SCO_DATA_PACKET: 4743 sco_handler(packet, size); 4744 break; 4745 #endif 4746 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4747 case HCI_ISO_DATA_PACKET: 4748 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4749 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4750 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4751 } 4752 hci_iso_packet_handler(iso_stream, packet, size); 4753 break; 4754 #endif 4755 default: 4756 break; 4757 } 4758 } 4759 4760 /** 4761 * @brief Add event packet handler. 4762 */ 4763 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4764 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4765 } 4766 4767 /** 4768 * @brief Remove event packet handler. 4769 */ 4770 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4771 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4772 } 4773 4774 /** Register HCI packet handlers */ 4775 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4776 hci_stack->acl_packet_handler = handler; 4777 } 4778 4779 #ifdef ENABLE_CLASSIC 4780 /** 4781 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4782 */ 4783 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4784 hci_stack->sco_packet_handler = handler; 4785 } 4786 #endif 4787 4788 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4789 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4790 hci_stack->iso_packet_handler = handler; 4791 } 4792 #endif 4793 4794 static void hci_state_reset(void){ 4795 // no connections yet 4796 hci_stack->connections = NULL; 4797 4798 // keep discoverable/connectable as this has been requested by the client(s) 4799 // hci_stack->discoverable = 0; 4800 // hci_stack->connectable = 0; 4801 // hci_stack->bondable = 1; 4802 // hci_stack->own_addr_type = 0; 4803 4804 // buffer is free 4805 hci_stack->hci_packet_buffer_reserved = false; 4806 4807 // no pending cmds 4808 hci_stack->decline_reason = 0; 4809 4810 hci_stack->secure_connections_active = false; 4811 4812 #ifdef ENABLE_CLASSIC 4813 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4814 4815 hci_stack->gap_tasks_classic = 4816 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4817 GAP_TASK_SET_CLASS_OF_DEVICE | 4818 GAP_TASK_SET_LOCAL_NAME | 4819 GAP_TASK_SET_EIR_DATA | 4820 GAP_TASK_WRITE_SCAN_ENABLE | 4821 GAP_TASK_WRITE_PAGE_TIMEOUT; 4822 #endif 4823 4824 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4825 hci_stack->classic_read_local_oob_data = false; 4826 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4827 #endif 4828 4829 // LE 4830 #ifdef ENABLE_BLE 4831 memset(hci_stack->le_random_address, 0, 6); 4832 hci_stack->le_random_address_set = 0; 4833 #endif 4834 #ifdef ENABLE_LE_CENTRAL 4835 hci_stack->le_scanning_active = false; 4836 hci_stack->le_scanning_param_update = true; 4837 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4838 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4839 hci_stack->le_whitelist_capacity = 0; 4840 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4841 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4842 #endif 4843 #endif 4844 #ifdef ENABLE_LE_PERIPHERAL 4845 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4846 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4847 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4848 } 4849 if (hci_stack->le_advertisements_data != NULL){ 4850 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4851 } 4852 #endif 4853 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4854 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4855 #endif 4856 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4857 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4858 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4859 #endif 4860 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4861 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4862 #endif 4863 } 4864 4865 #ifdef ENABLE_CLASSIC 4866 /** 4867 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4868 */ 4869 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4870 // store and open remote device db 4871 hci_stack->link_key_db = link_key_db; 4872 if (hci_stack->link_key_db) { 4873 hci_stack->link_key_db->open(); 4874 } 4875 } 4876 #endif 4877 4878 void hci_init(const hci_transport_t *transport, const void *config){ 4879 4880 #ifdef HAVE_MALLOC 4881 if (!hci_stack) { 4882 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4883 } 4884 btstack_assert(hci_stack != NULL); 4885 #else 4886 hci_stack = &hci_stack_static; 4887 #endif 4888 memset(hci_stack, 0, sizeof(hci_stack_t)); 4889 4890 // reference to use transport layer implementation 4891 hci_stack->hci_transport = transport; 4892 4893 // reference to used config 4894 hci_stack->config = config; 4895 4896 // setup pointer for outgoing packet buffer 4897 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4898 4899 // max acl payload size defined in config.h 4900 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4901 4902 // register packet handlers with transport 4903 transport->register_packet_handler(&packet_handler); 4904 4905 hci_stack->state = HCI_STATE_OFF; 4906 4907 // class of device 4908 hci_stack->class_of_device = 0x007a020c; // Smartphone 4909 4910 // bondable by default 4911 hci_stack->bondable = 1; 4912 4913 #ifdef ENABLE_CLASSIC 4914 // classic name 4915 hci_stack->local_name = default_classic_name; 4916 4917 // Master slave policy 4918 hci_stack->master_slave_policy = 1; 4919 4920 // Allow Role Switch 4921 hci_stack->allow_role_switch = 1; 4922 4923 // Default / minimum security level = 2 4924 hci_stack->gap_security_level = LEVEL_2; 4925 4926 // Default Security Mode 4 4927 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4928 4929 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4930 hci_stack->gap_required_encyrption_key_size = 7; 4931 4932 // Link Supervision Timeout 4933 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4934 4935 // Page Timeout 4936 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4937 4938 // All ACL packet types are enabledh 4939 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4940 #endif 4941 4942 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4943 hci_stack->ssp_enable = 1; 4944 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4945 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4946 hci_stack->ssp_auto_accept = 1; 4947 4948 // Secure Connections: enable (requires support from Controller) 4949 hci_stack->secure_connections_enable = true; 4950 4951 // voice setting - signed 16 bit pcm data with CVSD over the air 4952 hci_stack->sco_voice_setting = 0x60; 4953 4954 #ifdef ENABLE_BLE 4955 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4956 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4957 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4958 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4959 hci_stack->le_connection_latency = 4; // 4 4960 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4961 hci_stack->le_minimum_ce_length = 0; // 0 ms 4962 hci_stack->le_maximum_ce_length = 0; // 0 ms 4963 #endif 4964 4965 #ifdef ENABLE_LE_CENTRAL 4966 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4967 4968 // default LE Scanning 4969 hci_stack->le_scan_type = 0x01; // active 4970 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4971 hci_stack->le_scan_window = 0x30; // 30 ms 4972 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4973 #endif 4974 4975 #ifdef ENABLE_LE_PERIPHERAL 4976 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4977 4978 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4979 hci_stack->le_advertisements_interval_min = 0x0800; 4980 hci_stack->le_advertisements_interval_max = 0x0800; 4981 hci_stack->le_advertisements_type = 0; 4982 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4983 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4984 hci_stack->le_advertisements_channel_map = 0x07; 4985 hci_stack->le_advertisements_filter_policy = 0; 4986 #endif 4987 4988 // connection parameter range used to answer connection parameter update requests in l2cap 4989 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4990 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4991 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4992 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4993 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4994 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4995 4996 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4997 hci_stack->iso_packets_to_queue = 1; 4998 #endif 4999 5000 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5001 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5002 #endif 5003 5004 hci_state_reset(); 5005 } 5006 5007 void hci_deinit(void){ 5008 btstack_run_loop_remove_timer(&hci_stack->timeout); 5009 #ifdef HAVE_MALLOC 5010 if (hci_stack) { 5011 free(hci_stack); 5012 } 5013 #endif 5014 hci_stack = NULL; 5015 5016 #ifdef ENABLE_CLASSIC 5017 disable_l2cap_timeouts = 0; 5018 #endif 5019 } 5020 5021 /** 5022 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5023 */ 5024 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5025 hci_stack->chipset = chipset_driver; 5026 5027 // reset chipset driver - init is also called on power_up 5028 if (hci_stack->chipset && hci_stack->chipset->init){ 5029 hci_stack->chipset->init(hci_stack->config); 5030 } 5031 } 5032 5033 void hci_enable_custom_pre_init(void){ 5034 hci_stack->chipset_pre_init = true; 5035 } 5036 5037 /** 5038 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5039 */ 5040 void hci_set_control(const btstack_control_t *hardware_control){ 5041 // references to used control implementation 5042 hci_stack->control = hardware_control; 5043 // init with transport config 5044 hardware_control->init(hci_stack->config); 5045 } 5046 5047 static void hci_discard_connections(void){ 5048 btstack_linked_list_iterator_t it; 5049 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5050 while (btstack_linked_list_iterator_has_next(&it)){ 5051 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5052 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5053 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5054 hci_shutdown_connection(connection); 5055 } 5056 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5057 while (hci_stack->iso_streams != NULL){ 5058 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5059 } 5060 #endif 5061 } 5062 5063 void hci_close(void){ 5064 5065 #ifdef ENABLE_CLASSIC 5066 // close remote device db 5067 if (hci_stack->link_key_db) { 5068 hci_stack->link_key_db->close(); 5069 } 5070 #endif 5071 5072 hci_discard_connections(); 5073 5074 hci_power_control(HCI_POWER_OFF); 5075 5076 #ifdef HAVE_MALLOC 5077 free(hci_stack); 5078 #endif 5079 hci_stack = NULL; 5080 } 5081 5082 #ifdef HAVE_SCO_TRANSPORT 5083 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5084 hci_stack->sco_transport = sco_transport; 5085 sco_transport->register_packet_handler(&packet_handler); 5086 } 5087 #endif 5088 5089 #ifdef ENABLE_CLASSIC 5090 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5091 // validate ranage and set 5092 if (encryption_key_size < 7) return; 5093 if (encryption_key_size > 16) return; 5094 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5095 } 5096 5097 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5098 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5099 hci_stack->gap_security_mode = security_mode; 5100 return ERROR_CODE_SUCCESS; 5101 } else { 5102 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5103 } 5104 } 5105 5106 gap_security_mode_t gap_get_security_mode(void){ 5107 return hci_stack->gap_security_mode; 5108 } 5109 5110 void gap_set_security_level(gap_security_level_t security_level){ 5111 hci_stack->gap_security_level = security_level; 5112 } 5113 5114 gap_security_level_t gap_get_security_level(void){ 5115 if (hci_stack->gap_secure_connections_only_mode){ 5116 return LEVEL_4; 5117 } 5118 return hci_stack->gap_security_level; 5119 } 5120 5121 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5122 hci_stack->gap_minimal_service_security_level = security_level; 5123 } 5124 5125 void gap_set_secure_connections_only_mode(bool enable){ 5126 hci_stack->gap_secure_connections_only_mode = enable; 5127 } 5128 5129 bool gap_get_secure_connections_only_mode(void){ 5130 return hci_stack->gap_secure_connections_only_mode; 5131 } 5132 #endif 5133 5134 #ifdef ENABLE_CLASSIC 5135 void gap_set_class_of_device(uint32_t class_of_device){ 5136 hci_stack->class_of_device = class_of_device; 5137 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5138 hci_run(); 5139 } 5140 5141 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5142 hci_stack->default_link_policy_settings = default_link_policy_settings; 5143 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5144 hci_run(); 5145 } 5146 5147 void gap_set_allow_role_switch(bool allow_role_switch){ 5148 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5149 } 5150 5151 uint8_t hci_get_allow_role_switch(void){ 5152 return hci_stack->allow_role_switch; 5153 } 5154 5155 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5156 hci_stack->link_supervision_timeout = link_supervision_timeout; 5157 } 5158 5159 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5160 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5161 } 5162 5163 uint16_t hci_automatic_flush_timeout(void){ 5164 return hci_stack->automatic_flush_timeout; 5165 } 5166 5167 void hci_disable_l2cap_timeout_check(void){ 5168 disable_l2cap_timeouts = 1; 5169 } 5170 #endif 5171 5172 #ifndef HAVE_HOST_CONTROLLER_API 5173 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5174 void hci_set_bd_addr(bd_addr_t addr){ 5175 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5176 hci_stack->custom_bd_addr_set = 1; 5177 } 5178 #endif 5179 5180 // State-Module-Driver overview 5181 // state module low-level 5182 // HCI_STATE_OFF off close 5183 // HCI_STATE_INITIALIZING, on open 5184 // HCI_STATE_WORKING, on open 5185 // HCI_STATE_HALTING, on open 5186 // HCI_STATE_SLEEPING, off/sleep close 5187 // HCI_STATE_FALLING_ASLEEP on open 5188 5189 static int hci_power_control_on(void){ 5190 5191 // power on 5192 int err = 0; 5193 if (hci_stack->control && hci_stack->control->on){ 5194 err = (*hci_stack->control->on)(); 5195 } 5196 if (err){ 5197 log_error( "POWER_ON failed"); 5198 hci_emit_hci_open_failed(); 5199 return err; 5200 } 5201 5202 // int chipset driver 5203 if (hci_stack->chipset && hci_stack->chipset->init){ 5204 hci_stack->chipset->init(hci_stack->config); 5205 } 5206 5207 // init transport 5208 if (hci_stack->hci_transport->init){ 5209 hci_stack->hci_transport->init(hci_stack->config); 5210 } 5211 5212 // open transport 5213 err = hci_stack->hci_transport->open(); 5214 if (err){ 5215 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5216 if (hci_stack->control && hci_stack->control->off){ 5217 (*hci_stack->control->off)(); 5218 } 5219 hci_emit_hci_open_failed(); 5220 return err; 5221 } 5222 return 0; 5223 } 5224 5225 static void hci_power_control_off(void){ 5226 5227 log_info("hci_power_control_off"); 5228 5229 // close low-level device 5230 hci_stack->hci_transport->close(); 5231 5232 log_info("hci_power_control_off - hci_transport closed"); 5233 5234 // power off 5235 if (hci_stack->control && hci_stack->control->off){ 5236 (*hci_stack->control->off)(); 5237 } 5238 5239 log_info("hci_power_control_off - control closed"); 5240 5241 hci_stack->state = HCI_STATE_OFF; 5242 } 5243 5244 static void hci_power_control_sleep(void){ 5245 5246 log_info("hci_power_control_sleep"); 5247 5248 #if 0 5249 // don't close serial port during sleep 5250 5251 // close low-level device 5252 hci_stack->hci_transport->close(hci_stack->config); 5253 #endif 5254 5255 // sleep mode 5256 if (hci_stack->control && hci_stack->control->sleep){ 5257 (*hci_stack->control->sleep)(); 5258 } 5259 5260 hci_stack->state = HCI_STATE_SLEEPING; 5261 } 5262 5263 static int hci_power_control_wake(void){ 5264 5265 log_info("hci_power_control_wake"); 5266 5267 // wake on 5268 if (hci_stack->control && hci_stack->control->wake){ 5269 (*hci_stack->control->wake)(); 5270 } 5271 5272 #if 0 5273 // open low-level device 5274 int err = hci_stack->hci_transport->open(hci_stack->config); 5275 if (err){ 5276 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5277 if (hci_stack->control && hci_stack->control->off){ 5278 (*hci_stack->control->off)(); 5279 } 5280 hci_emit_hci_open_failed(); 5281 return err; 5282 } 5283 #endif 5284 5285 return 0; 5286 } 5287 5288 static void hci_power_enter_initializing_state(void){ 5289 // set up state machine 5290 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5291 hci_stack->hci_packet_buffer_reserved = false; 5292 hci_stack->state = HCI_STATE_INITIALIZING; 5293 5294 #ifndef HAVE_HOST_CONTROLLER_API 5295 if (hci_stack->chipset_pre_init) { 5296 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5297 } else 5298 #endif 5299 { 5300 hci_stack->substate = HCI_INIT_SEND_RESET; 5301 } 5302 } 5303 5304 static void hci_power_enter_halting_state(void){ 5305 #ifdef ENABLE_BLE 5306 // drop entries scheduled for removal, mark others for re-adding 5307 btstack_linked_list_iterator_t it; 5308 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5309 while (btstack_linked_list_iterator_has_next(&it)){ 5310 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5311 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5312 btstack_linked_list_iterator_remove(&it); 5313 btstack_memory_whitelist_entry_free(entry); 5314 } else { 5315 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5316 } 5317 } 5318 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5319 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5320 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5321 while (btstack_linked_list_iterator_has_next(&it)){ 5322 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5323 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5324 btstack_linked_list_iterator_remove(&it); 5325 btstack_memory_periodic_advertiser_list_entry_free(entry); 5326 } else { 5327 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5328 continue; 5329 } 5330 } 5331 #endif 5332 #endif 5333 // see hci_run 5334 hci_stack->state = HCI_STATE_HALTING; 5335 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5336 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5337 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5338 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5339 btstack_run_loop_add_timer(&hci_stack->timeout); 5340 } 5341 5342 // returns error 5343 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5344 int err; 5345 switch (power_mode){ 5346 case HCI_POWER_ON: 5347 err = hci_power_control_on(); 5348 if (err != 0) { 5349 log_error("hci_power_control_on() error %d", err); 5350 return err; 5351 } 5352 hci_power_enter_initializing_state(); 5353 break; 5354 case HCI_POWER_OFF: 5355 // do nothing 5356 break; 5357 case HCI_POWER_SLEEP: 5358 // do nothing (with SLEEP == OFF) 5359 break; 5360 default: 5361 btstack_assert(false); 5362 break; 5363 } 5364 return ERROR_CODE_SUCCESS; 5365 } 5366 5367 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5368 switch (power_mode){ 5369 case HCI_POWER_ON: 5370 // do nothing 5371 break; 5372 case HCI_POWER_OFF: 5373 // no connections yet, just turn it off 5374 hci_power_control_off(); 5375 break; 5376 case HCI_POWER_SLEEP: 5377 // no connections yet, just turn it off 5378 hci_power_control_sleep(); 5379 break; 5380 default: 5381 btstack_assert(false); 5382 break; 5383 } 5384 return ERROR_CODE_SUCCESS; 5385 } 5386 5387 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5388 switch (power_mode){ 5389 case HCI_POWER_ON: 5390 // do nothing 5391 break; 5392 case HCI_POWER_OFF: 5393 hci_power_enter_halting_state(); 5394 break; 5395 case HCI_POWER_SLEEP: 5396 // see hci_run 5397 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5398 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5399 break; 5400 default: 5401 btstack_assert(false); 5402 break; 5403 } 5404 return ERROR_CODE_SUCCESS; 5405 } 5406 5407 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5408 switch (power_mode){ 5409 case HCI_POWER_ON: 5410 hci_power_enter_initializing_state(); 5411 break; 5412 case HCI_POWER_OFF: 5413 // do nothing 5414 break; 5415 case HCI_POWER_SLEEP: 5416 // see hci_run 5417 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5418 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5419 break; 5420 default: 5421 btstack_assert(false); 5422 break; 5423 } 5424 return ERROR_CODE_SUCCESS; 5425 } 5426 5427 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5428 switch (power_mode){ 5429 case HCI_POWER_ON: 5430 hci_power_enter_initializing_state(); 5431 break; 5432 case HCI_POWER_OFF: 5433 hci_power_enter_halting_state(); 5434 break; 5435 case HCI_POWER_SLEEP: 5436 // do nothing 5437 break; 5438 default: 5439 btstack_assert(false); 5440 break; 5441 } 5442 return ERROR_CODE_SUCCESS; 5443 } 5444 5445 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5446 int err; 5447 switch (power_mode){ 5448 case HCI_POWER_ON: 5449 err = hci_power_control_wake(); 5450 if (err) return err; 5451 hci_power_enter_initializing_state(); 5452 break; 5453 case HCI_POWER_OFF: 5454 hci_power_enter_halting_state(); 5455 break; 5456 case HCI_POWER_SLEEP: 5457 // do nothing 5458 break; 5459 default: 5460 btstack_assert(false); 5461 break; 5462 } 5463 return ERROR_CODE_SUCCESS; 5464 } 5465 5466 int hci_power_control(HCI_POWER_MODE power_mode){ 5467 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5468 btstack_run_loop_remove_timer(&hci_stack->timeout); 5469 int err = 0; 5470 switch (hci_stack->state){ 5471 case HCI_STATE_OFF: 5472 err = hci_power_control_state_off(power_mode); 5473 break; 5474 case HCI_STATE_INITIALIZING: 5475 err = hci_power_control_state_initializing(power_mode); 5476 break; 5477 case HCI_STATE_WORKING: 5478 err = hci_power_control_state_working(power_mode); 5479 break; 5480 case HCI_STATE_HALTING: 5481 err = hci_power_control_state_halting(power_mode); 5482 break; 5483 case HCI_STATE_FALLING_ASLEEP: 5484 err = hci_power_control_state_falling_asleep(power_mode); 5485 break; 5486 case HCI_STATE_SLEEPING: 5487 err = hci_power_control_state_sleeping(power_mode); 5488 break; 5489 default: 5490 btstack_assert(false); 5491 break; 5492 } 5493 if (err != 0){ 5494 return err; 5495 } 5496 5497 // create internal event 5498 hci_emit_state(); 5499 5500 // trigger next/first action 5501 hci_run(); 5502 5503 return 0; 5504 } 5505 5506 5507 static void hci_halting_run(void) { 5508 5509 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5510 5511 hci_connection_t *connection; 5512 #ifdef ENABLE_BLE 5513 #ifdef ENABLE_LE_PERIPHERAL 5514 bool stop_advertismenets; 5515 #endif 5516 #endif 5517 5518 switch (hci_stack->substate) { 5519 case HCI_HALTING_CLASSIC_STOP: 5520 #ifdef ENABLE_CLASSIC 5521 if (!hci_can_send_command_packet_now()) return; 5522 5523 if (hci_stack->connectable || hci_stack->discoverable){ 5524 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5525 hci_send_cmd(&hci_write_scan_enable, 0); 5526 return; 5527 } 5528 #endif 5529 /* fall through */ 5530 5531 case HCI_HALTING_LE_ADV_STOP: 5532 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5533 5534 #ifdef ENABLE_BLE 5535 #ifdef ENABLE_LE_PERIPHERAL 5536 if (!hci_can_send_command_packet_now()) return; 5537 5538 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5539 5540 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5541 if (hci_le_extended_advertising_supported()){ 5542 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5543 btstack_linked_list_iterator_t it; 5544 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5545 // stop all periodic advertisements and check if an extended set is active 5546 while (btstack_linked_list_iterator_has_next(&it)){ 5547 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5548 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5549 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5550 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5551 return; 5552 } 5553 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5554 stop_advertismenets = true; 5555 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5556 } 5557 } 5558 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5559 if (stop_advertismenets){ 5560 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5561 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5562 return; 5563 } 5564 } else 5565 #else /* ENABLE_LE_PERIPHERAL */ 5566 { 5567 if (stop_advertismenets) { 5568 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5569 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5570 return; 5571 } 5572 } 5573 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5574 #endif /* ENABLE_LE_PERIPHERAL */ 5575 #endif /* ENABLE_BLE */ 5576 5577 /* fall through */ 5578 5579 case HCI_HALTING_LE_SCAN_STOP: 5580 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5581 if (!hci_can_send_command_packet_now()) return; 5582 5583 #ifdef ENABLE_BLE 5584 #ifdef ENABLE_LE_CENTRAL 5585 if (hci_stack->le_scanning_active){ 5586 hci_le_scan_stop(); 5587 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5588 return; 5589 } 5590 #endif 5591 #endif 5592 5593 /* fall through */ 5594 5595 case HCI_HALTING_DISCONNECT_ALL: 5596 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5597 if (!hci_can_send_command_packet_now()) return; 5598 5599 // close all open connections 5600 connection = (hci_connection_t *) hci_stack->connections; 5601 if (connection) { 5602 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5603 5604 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5605 5606 // check state 5607 switch(connection->state) { 5608 case SENT_DISCONNECT: 5609 case RECEIVED_DISCONNECTION_COMPLETE: 5610 // wait until connection is gone 5611 return; 5612 default: 5613 break; 5614 } 5615 5616 // finally, send the disconnect command 5617 connection->state = SENT_DISCONNECT; 5618 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5619 return; 5620 } 5621 5622 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5623 // stop BIGs and BIG Syncs 5624 if (hci_stack->le_audio_bigs != NULL){ 5625 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5626 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5627 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5628 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5629 return; 5630 } 5631 if (hci_stack->le_audio_big_syncs != NULL){ 5632 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5633 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5634 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5635 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5636 return; 5637 } 5638 #endif 5639 5640 btstack_run_loop_remove_timer(&hci_stack->timeout); 5641 5642 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5643 log_info("HCI_STATE_HALTING: wait 50 ms"); 5644 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5645 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5646 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5647 btstack_run_loop_add_timer(&hci_stack->timeout); 5648 break; 5649 5650 case HCI_HALTING_W4_CLOSE_TIMER: 5651 // keep waiting 5652 break; 5653 5654 case HCI_HALTING_CLOSE: 5655 // close left over connections (that had not been properly closed before) 5656 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5657 hci_discard_connections(); 5658 5659 log_info("HCI_STATE_HALTING, calling off"); 5660 5661 // switch mode 5662 hci_power_control_off(); 5663 5664 log_info("HCI_STATE_HALTING, emitting state"); 5665 hci_emit_state(); 5666 log_info("HCI_STATE_HALTING, done"); 5667 break; 5668 5669 default: 5670 break; 5671 } 5672 }; 5673 5674 static void hci_falling_asleep_run(void){ 5675 hci_connection_t * connection; 5676 switch(hci_stack->substate) { 5677 case HCI_FALLING_ASLEEP_DISCONNECT: 5678 log_info("HCI_STATE_FALLING_ASLEEP"); 5679 // close all open connections 5680 connection = (hci_connection_t *) hci_stack->connections; 5681 if (connection){ 5682 5683 // send disconnect 5684 if (!hci_can_send_command_packet_now()) return; 5685 5686 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5687 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5688 5689 // send disconnected event right away - causes higher layer connections to get closed, too. 5690 hci_shutdown_connection(connection); 5691 return; 5692 } 5693 5694 if (hci_classic_supported()){ 5695 // disable page and inquiry scan 5696 if (!hci_can_send_command_packet_now()) return; 5697 5698 log_info("HCI_STATE_HALTING, disabling inq scans"); 5699 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5700 5701 // continue in next sub state 5702 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5703 break; 5704 } 5705 5706 /* fall through */ 5707 5708 case HCI_FALLING_ASLEEP_COMPLETE: 5709 log_info("HCI_STATE_HALTING, calling sleep"); 5710 // switch mode 5711 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5712 hci_emit_state(); 5713 break; 5714 5715 default: 5716 break; 5717 } 5718 } 5719 5720 #ifdef ENABLE_CLASSIC 5721 5722 static void hci_update_scan_enable(void){ 5723 // 2 = page scan, 1 = inq scan 5724 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5725 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5726 hci_run(); 5727 } 5728 5729 void gap_discoverable_control(uint8_t enable){ 5730 if (enable) enable = 1; // normalize argument 5731 5732 if (hci_stack->discoverable == enable){ 5733 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5734 return; 5735 } 5736 5737 hci_stack->discoverable = enable; 5738 hci_update_scan_enable(); 5739 } 5740 5741 void gap_connectable_control(uint8_t enable){ 5742 if (enable) enable = 1; // normalize argument 5743 5744 // don't emit event 5745 if (hci_stack->connectable == enable) return; 5746 5747 hci_stack->connectable = enable; 5748 hci_update_scan_enable(); 5749 } 5750 #endif 5751 5752 void gap_local_bd_addr(bd_addr_t address_buffer){ 5753 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5754 } 5755 5756 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5757 static void hci_host_num_completed_packets(void){ 5758 5759 // create packet manually as arrays are not supported and num_commands should not get reduced 5760 hci_reserve_packet_buffer(); 5761 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5762 5763 uint16_t size = 0; 5764 uint16_t num_handles = 0; 5765 packet[size++] = 0x35; 5766 packet[size++] = 0x0c; 5767 size++; // skip param len 5768 size++; // skip num handles 5769 5770 // add { handle, packets } entries 5771 btstack_linked_item_t * it; 5772 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5773 hci_connection_t * connection = (hci_connection_t *) it; 5774 if (connection->num_packets_completed){ 5775 little_endian_store_16(packet, size, connection->con_handle); 5776 size += 2; 5777 little_endian_store_16(packet, size, connection->num_packets_completed); 5778 size += 2; 5779 // 5780 num_handles++; 5781 connection->num_packets_completed = 0; 5782 } 5783 } 5784 5785 packet[2] = size - 3; 5786 packet[3] = num_handles; 5787 5788 hci_stack->host_completed_packets = 0; 5789 5790 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5791 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5792 5793 // release packet buffer for synchronous transport implementations 5794 if (hci_transport_synchronous()){ 5795 hci_release_packet_buffer(); 5796 hci_emit_transport_packet_sent(); 5797 } 5798 } 5799 #endif 5800 5801 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5802 UNUSED(ds); 5803 hci_stack->substate = HCI_HALTING_CLOSE; 5804 hci_halting_run(); 5805 } 5806 5807 static bool hci_run_acl_fragments(void){ 5808 if (hci_stack->acl_fragmentation_total_size > 0u) { 5809 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5810 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5811 if (connection) { 5812 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5813 hci_send_acl_packet_fragments(connection); 5814 return true; 5815 } 5816 } else { 5817 // connection gone -> discard further fragments 5818 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5819 hci_stack->acl_fragmentation_total_size = 0; 5820 hci_stack->acl_fragmentation_pos = 0; 5821 } 5822 } 5823 return false; 5824 } 5825 5826 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5827 static bool hci_run_iso_fragments(void){ 5828 if (hci_stack->iso_fragmentation_total_size > 0u) { 5829 // TODO: flow control 5830 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5831 hci_send_iso_packet_fragments(); 5832 return true; 5833 } 5834 } 5835 return false; 5836 } 5837 #endif 5838 5839 #ifdef ENABLE_CLASSIC 5840 5841 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5842 static bool hci_classic_operation_active(void) { 5843 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5844 return true; 5845 } 5846 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5847 return true; 5848 } 5849 btstack_linked_item_t * it; 5850 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5851 hci_connection_t *connection = (hci_connection_t *) it; 5852 switch (connection->state) { 5853 case SENT_CREATE_CONNECTION: 5854 case SENT_CANCEL_CONNECTION: 5855 case SENT_DISCONNECT: 5856 return true; 5857 default: 5858 break; 5859 } 5860 } 5861 return false; 5862 } 5863 #endif 5864 5865 static bool hci_run_general_gap_classic(void){ 5866 5867 // assert stack is working and classic is active 5868 if (hci_classic_supported() == false) return false; 5869 if (hci_stack->state != HCI_STATE_WORKING) return false; 5870 5871 // decline incoming connections 5872 if (hci_stack->decline_reason){ 5873 uint8_t reason = hci_stack->decline_reason; 5874 hci_stack->decline_reason = 0; 5875 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5876 return true; 5877 } 5878 5879 if (hci_stack->gap_tasks_classic != 0){ 5880 hci_run_gap_tasks_classic(); 5881 return true; 5882 } 5883 5884 // start/stop inquiry 5885 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5886 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5887 if (hci_classic_operation_active() == false) 5888 #endif 5889 { 5890 uint8_t duration = hci_stack->inquiry_state; 5891 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5892 if (hci_stack->inquiry_max_period_length != 0){ 5893 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); 5894 } else { 5895 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5896 } 5897 return true; 5898 } 5899 } 5900 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5901 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5902 hci_send_cmd(&hci_inquiry_cancel); 5903 return true; 5904 } 5905 5906 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5907 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5908 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5909 return true; 5910 } 5911 5912 // remote name request 5913 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5914 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5915 if (hci_classic_operation_active() == false) 5916 #endif 5917 { 5918 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5919 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5920 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5921 return true; 5922 } 5923 } 5924 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5925 // Local OOB data 5926 if (hci_stack->classic_read_local_oob_data){ 5927 hci_stack->classic_read_local_oob_data = false; 5928 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5929 hci_send_cmd(&hci_read_local_extended_oob_data); 5930 } else { 5931 hci_send_cmd(&hci_read_local_oob_data); 5932 } 5933 } 5934 #endif 5935 // pairing 5936 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5937 uint8_t state = hci_stack->gap_pairing_state; 5938 uint8_t pin_code[PIN_CODE_LEN]; 5939 switch (state){ 5940 case GAP_PAIRING_STATE_SEND_PIN: 5941 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5942 memset(pin_code, 0, 16); 5943 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5944 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5945 break; 5946 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5947 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5948 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5949 break; 5950 case GAP_PAIRING_STATE_SEND_PASSKEY: 5951 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5952 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5953 break; 5954 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5955 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5956 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5957 break; 5958 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5959 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5960 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5961 break; 5962 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5963 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5964 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5965 break; 5966 default: 5967 break; 5968 } 5969 return true; 5970 } 5971 return false; 5972 } 5973 #endif 5974 5975 #ifdef ENABLE_BLE 5976 5977 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5978 static uint8_t hci_le_num_phys(uint8_t phys){ 5979 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5980 btstack_assert(phys); 5981 return num_bits_set[phys]; 5982 } 5983 #endif 5984 5985 #ifdef ENABLE_LE_CENTRAL 5986 static void hci_le_scan_stop(void){ 5987 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5988 if (hci_le_extended_advertising_supported()) { 5989 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5990 } else 5991 #endif 5992 { 5993 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5994 } 5995 } 5996 5997 static void 5998 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5999 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6000 if (hci_le_extended_advertising_supported()) { 6001 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6002 uint16_t le_connection_scan_interval[3]; 6003 uint16_t le_connection_scan_window[3]; 6004 uint16_t le_connection_interval_min[3]; 6005 uint16_t le_connection_interval_max[3]; 6006 uint16_t le_connection_latency[3]; 6007 uint16_t le_supervision_timeout[3]; 6008 uint16_t le_minimum_ce_length[3]; 6009 uint16_t le_maximum_ce_length[3]; 6010 6011 uint8_t i; 6012 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6013 for (i=0;i<num_phys;i++){ 6014 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6015 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6016 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6017 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6018 le_connection_latency[i] = hci_stack->le_connection_latency; 6019 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6020 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6021 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6022 } 6023 hci_send_cmd(&hci_le_extended_create_connection, 6024 initiator_filter_policy, 6025 hci_stack->le_connection_own_addr_type, // our addr type: 6026 address_type, // peer address type 6027 address, // peer bd addr 6028 hci_stack->le_connection_phys, // initiating PHY 6029 le_connection_scan_interval, // conn scan interval 6030 le_connection_scan_window, // conn scan windows 6031 le_connection_interval_min, // conn interval min 6032 le_connection_interval_max, // conn interval max 6033 le_connection_latency, // conn latency 6034 le_supervision_timeout, // conn latency 6035 le_minimum_ce_length, // min ce length 6036 le_maximum_ce_length // max ce length 6037 ); 6038 } else 6039 #endif 6040 { 6041 hci_send_cmd(&hci_le_create_connection, 6042 hci_stack->le_connection_scan_interval, // conn scan interval 6043 hci_stack->le_connection_scan_window, // conn scan windows 6044 initiator_filter_policy, // don't use whitelist 6045 address_type, // peer address type 6046 address, // peer bd addr 6047 hci_stack->le_connection_own_addr_type, // our addr type: 6048 hci_stack->le_connection_interval_min, // conn interval min 6049 hci_stack->le_connection_interval_max, // conn interval max 6050 hci_stack->le_connection_latency, // conn latency 6051 hci_stack->le_supervision_timeout, // conn latency 6052 hci_stack->le_minimum_ce_length, // min ce length 6053 hci_stack->le_maximum_ce_length // max ce length 6054 ); 6055 } 6056 } 6057 #endif 6058 6059 #ifdef ENABLE_LE_PERIPHERAL 6060 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6061 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6062 uint8_t operation = 0; 6063 if (pos == 0){ 6064 // first fragment or complete data 6065 operation |= 1; 6066 } 6067 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6068 // last fragment or complete data 6069 operation |= 2; 6070 } 6071 return operation; 6072 } 6073 #endif 6074 #endif 6075 6076 static bool hci_run_general_gap_le(void){ 6077 6078 btstack_linked_list_iterator_t lit; 6079 6080 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6081 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6082 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6083 hci_stack->le_resolvable_private_address_update_s = 0; 6084 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6085 return true; 6086 } 6087 #endif 6088 6089 // Phase 1: collect what to stop 6090 6091 #ifdef ENABLE_LE_CENTRAL 6092 bool scanning_stop = false; 6093 bool connecting_stop = false; 6094 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6095 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6096 bool periodic_sync_stop = false; 6097 #endif 6098 #endif 6099 #endif 6100 6101 #ifdef ENABLE_LE_PERIPHERAL 6102 bool advertising_stop = false; 6103 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6104 le_advertising_set_t * advertising_stop_set = NULL; 6105 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6106 bool periodic_advertising_stop = false; 6107 #endif 6108 #endif 6109 #endif 6110 6111 // check if own address changes 6112 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6113 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6114 6115 // check if whitelist needs modification 6116 bool whitelist_modification_pending = false; 6117 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6118 while (btstack_linked_list_iterator_has_next(&lit)){ 6119 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6120 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6121 whitelist_modification_pending = true; 6122 break; 6123 } 6124 } 6125 6126 // check if resolving list needs modification 6127 bool resolving_list_modification_pending = false; 6128 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6129 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6130 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6131 resolving_list_modification_pending = true; 6132 } 6133 #endif 6134 6135 #ifdef ENABLE_LE_CENTRAL 6136 6137 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6138 // check if periodic advertiser list needs modification 6139 bool periodic_list_modification_pending = false; 6140 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6141 while (btstack_linked_list_iterator_has_next(&lit)){ 6142 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6143 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6144 periodic_list_modification_pending = true; 6145 break; 6146 } 6147 } 6148 #endif 6149 6150 // scanning control 6151 if (hci_stack->le_scanning_active) { 6152 // stop if: 6153 // - parameter change required 6154 // - it's disabled 6155 // - whitelist change required but used for scanning 6156 // - resolving list modified 6157 // - own address changes 6158 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6159 if ((hci_stack->le_scanning_param_update) || 6160 !hci_stack->le_scanning_enabled || 6161 (scanning_uses_whitelist && whitelist_modification_pending) || 6162 resolving_list_modification_pending || 6163 random_address_change){ 6164 6165 scanning_stop = true; 6166 } 6167 } 6168 6169 // connecting control 6170 bool connecting_with_whitelist; 6171 switch (hci_stack->le_connecting_state){ 6172 case LE_CONNECTING_DIRECT: 6173 case LE_CONNECTING_WHITELIST: 6174 // stop connecting if: 6175 // - connecting uses white and whitelist modification pending 6176 // - if it got disabled 6177 // - resolving list modified 6178 // - own address changes 6179 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6180 if ((connecting_with_whitelist && whitelist_modification_pending) || 6181 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6182 resolving_list_modification_pending || 6183 random_address_change) { 6184 6185 connecting_stop = true; 6186 } 6187 break; 6188 default: 6189 break; 6190 } 6191 6192 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6193 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6194 // periodic sync control 6195 bool sync_with_advertiser_list; 6196 switch(hci_stack->le_periodic_sync_state){ 6197 case LE_CONNECTING_DIRECT: 6198 case LE_CONNECTING_WHITELIST: 6199 // stop sync if: 6200 // - sync with advertiser list and advertiser list modification pending 6201 // - if it got disabled 6202 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6203 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6204 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6205 periodic_sync_stop = true; 6206 } 6207 break; 6208 default: 6209 break; 6210 } 6211 #endif 6212 #endif 6213 6214 #endif /* ENABLE_LE_CENTRAL */ 6215 6216 #ifdef ENABLE_LE_PERIPHERAL 6217 // le advertisement control 6218 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6219 // stop if: 6220 // - parameter change required 6221 // - random address used in advertising and changes 6222 // - it's disabled 6223 // - whitelist change required but used for advertisement filter policy 6224 // - resolving list modified 6225 // - own address changes 6226 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6227 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6228 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6229 if (advertising_change || 6230 (advertising_uses_random_address && random_address_change) || 6231 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6232 (advertising_uses_whitelist && whitelist_modification_pending) || 6233 resolving_list_modification_pending || 6234 random_address_change) { 6235 6236 advertising_stop = true; 6237 } 6238 } 6239 6240 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6241 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6242 btstack_linked_list_iterator_t it; 6243 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6244 while (btstack_linked_list_iterator_has_next(&it)){ 6245 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6246 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6247 // stop if: 6248 // - parameter change required 6249 // - random address used in connectable advertising and changes 6250 // - it's disabled 6251 // - whitelist change required but used for advertisement filter policy 6252 // - resolving list modified 6253 // - own address changes 6254 // - advertisement set will be removed 6255 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6256 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6257 bool advertising_uses_random_address = 6258 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6259 advertising_connectable; 6260 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6261 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6262 bool advertising_set_random_address_change = 6263 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6264 bool advertising_set_will_be_removed = 6265 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6266 if (advertising_parameter_change || 6267 (advertising_uses_random_address && advertising_set_random_address_change) || 6268 (advertising_enabled == false) || 6269 (advertising_uses_whitelist && whitelist_modification_pending) || 6270 resolving_list_modification_pending || 6271 advertising_set_will_be_removed) { 6272 6273 advertising_stop = true; 6274 advertising_stop_set = advertising_set; 6275 break; 6276 } 6277 } 6278 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6279 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6280 // stop if: 6281 // - it's disabled 6282 // - parameter change required 6283 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6284 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6285 if ((periodic_enabled == false) || periodic_parameter_change){ 6286 periodic_advertising_stop = true; 6287 advertising_stop_set = advertising_set; 6288 } 6289 } 6290 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6291 } 6292 } 6293 #endif 6294 6295 #endif 6296 6297 6298 // Phase 2: stop everything that should be off during modifications 6299 6300 6301 // 2.1 Outgoing connection 6302 #ifdef ENABLE_LE_CENTRAL 6303 if (connecting_stop){ 6304 hci_send_cmd(&hci_le_create_connection_cancel); 6305 return true; 6306 } 6307 #endif 6308 6309 // 2.2 Scanning 6310 #ifdef ENABLE_LE_CENTRAL 6311 if (scanning_stop){ 6312 hci_stack->le_scanning_active = false; 6313 hci_le_scan_stop(); 6314 return true; 6315 } 6316 6317 // 2.3 Periodic Sync 6318 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6319 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6320 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6321 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6322 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6323 return true; 6324 } 6325 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6326 if (periodic_sync_stop){ 6327 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6328 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6329 return true; 6330 } 6331 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6332 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6333 #endif /* ENABLE_LE_CENTRAL */ 6334 6335 // 2.4 Advertising: legacy, extended, periodic 6336 #ifdef ENABLE_LE_PERIPHERAL 6337 if (advertising_stop){ 6338 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6339 if (hci_le_extended_advertising_supported()) { 6340 uint8_t advertising_stop_handle; 6341 if (advertising_stop_set != NULL){ 6342 advertising_stop_handle = advertising_stop_set->advertising_handle; 6343 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6344 } else { 6345 advertising_stop_handle = 0; 6346 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6347 } 6348 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6349 const uint16_t durations[] = { 0 }; 6350 const uint16_t max_events[] = { 0 }; 6351 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6352 } else 6353 #endif 6354 { 6355 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6356 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6357 } 6358 return true; 6359 } 6360 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6361 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6362 if (periodic_advertising_stop){ 6363 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6364 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6365 return true; 6366 } 6367 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6368 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6369 #endif /* ENABLE_LE_PERIPHERAL */ 6370 6371 6372 // Phase 3: modify 6373 6374 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6375 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6376 // GAP Privacy, notify clients upon upcoming random address change 6377 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6378 // notify might cause hci_run to get executed, check if we still can send 6379 gap_privacy_clients_notify(hci_stack->le_random_address); 6380 if (!hci_can_send_command_packet_now()) { 6381 return true; 6382 } 6383 } 6384 6385 // - wait until privacy update completed 6386 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6387 return false; 6388 } 6389 6390 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6391 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6392 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6393 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6394 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6395 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6396 #endif 6397 return true; 6398 } 6399 6400 #ifdef ENABLE_LE_CENTRAL 6401 if (hci_stack->le_scanning_param_update){ 6402 hci_stack->le_scanning_param_update = false; 6403 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6404 if (hci_le_extended_advertising_supported()){ 6405 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6406 uint8_t scan_types[2]; 6407 uint16_t scan_intervals[2]; 6408 uint16_t scan_windows[2]; 6409 6410 uint8_t i; 6411 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6412 for (i=0;i<num_phys;i++){ 6413 scan_types[i] = hci_stack->le_scan_type; 6414 scan_intervals[i] = hci_stack->le_scan_interval; 6415 scan_windows[i] = hci_stack->le_scan_window; 6416 } 6417 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6418 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6419 } else 6420 #endif 6421 { 6422 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6423 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6424 } 6425 return true; 6426 } 6427 #endif 6428 6429 #ifdef ENABLE_LE_PERIPHERAL 6430 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6431 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6432 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6433 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6434 if (hci_le_extended_advertising_supported()){ 6435 // map advertisment type to advertising event properties 6436 uint16_t adv_event_properties = 0; 6437 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6438 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6439 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6440 } 6441 hci_stack->le_advertising_set_in_current_command = 0; 6442 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6443 0, 6444 adv_event_properties, 6445 hci_stack->le_advertisements_interval_min, 6446 hci_stack->le_advertisements_interval_max, 6447 hci_stack->le_advertisements_channel_map, 6448 hci_stack->le_advertisements_own_addr_type, 6449 hci_stack->le_advertisements_direct_address_type, 6450 hci_stack->le_advertisements_direct_address, 6451 hci_stack->le_advertisements_filter_policy, 6452 0x7f, // tx power: no preference 6453 0x01, // primary adv phy: LE 1M 6454 0, // secondary adv max skip 6455 0x01, // secondary adv phy 6456 0, // adv sid 6457 0 // scan request notification 6458 ); 6459 } else 6460 #endif 6461 { 6462 hci_send_cmd(&hci_le_set_advertising_parameters, 6463 hci_stack->le_advertisements_interval_min, 6464 hci_stack->le_advertisements_interval_max, 6465 hci_stack->le_advertisements_type, 6466 hci_stack->le_advertisements_own_addr_type, 6467 hci_stack->le_advertisements_direct_address_type, 6468 hci_stack->le_advertisements_direct_address, 6469 hci_stack->le_advertisements_channel_map, 6470 hci_stack->le_advertisements_filter_policy); 6471 } 6472 return true; 6473 } 6474 6475 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6476 // assumption: only set if extended advertising is supported 6477 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6478 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6479 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6480 return true; 6481 } 6482 #endif 6483 6484 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6485 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6486 uint8_t adv_data_clean[31]; 6487 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6488 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6489 hci_stack->le_advertisements_data_len); 6490 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6491 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6492 if (hci_le_extended_advertising_supported()){ 6493 hci_stack->le_advertising_set_in_current_command = 0; 6494 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6495 } else 6496 #endif 6497 { 6498 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6499 } 6500 return true; 6501 } 6502 6503 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6504 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6505 uint8_t scan_data_clean[31]; 6506 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6507 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6508 hci_stack->le_scan_response_data_len); 6509 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6510 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6511 if (hci_le_extended_advertising_supported()){ 6512 hci_stack->le_advertising_set_in_current_command = 0; 6513 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6514 } else 6515 #endif 6516 { 6517 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6518 } 6519 return true; 6520 } 6521 6522 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6523 if (hci_le_extended_advertising_supported()) { 6524 btstack_linked_list_iterator_t it; 6525 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6526 while (btstack_linked_list_iterator_has_next(&it)){ 6527 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6528 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6529 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6530 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6531 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6532 return true; 6533 } 6534 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6535 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6536 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6537 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6538 advertising_set->advertising_handle, 6539 advertising_set->extended_params.advertising_event_properties, 6540 advertising_set->extended_params.primary_advertising_interval_min, 6541 advertising_set->extended_params.primary_advertising_interval_max, 6542 advertising_set->extended_params.primary_advertising_channel_map, 6543 advertising_set->extended_params.own_address_type, 6544 advertising_set->extended_params.peer_address_type, 6545 advertising_set->extended_params.peer_address, 6546 advertising_set->extended_params.advertising_filter_policy, 6547 advertising_set->extended_params.advertising_tx_power, 6548 advertising_set->extended_params.primary_advertising_phy, 6549 advertising_set->extended_params.secondary_advertising_max_skip, 6550 advertising_set->extended_params.secondary_advertising_phy, 6551 advertising_set->extended_params.advertising_sid, 6552 advertising_set->extended_params.scan_request_notification_enable 6553 ); 6554 return true; 6555 } 6556 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6557 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6558 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6559 return true; 6560 } 6561 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6562 uint16_t pos = advertising_set->adv_data_pos; 6563 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6564 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6565 if ((operation & 0x02) != 0){ 6566 // last fragment or complete data 6567 operation |= 2; 6568 advertising_set->adv_data_pos = 0; 6569 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6570 } else { 6571 advertising_set->adv_data_pos += data_to_upload; 6572 } 6573 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6574 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6575 return true; 6576 } 6577 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6578 uint16_t pos = advertising_set->scan_data_pos; 6579 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6580 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6581 if ((operation & 0x02) != 0){ 6582 advertising_set->scan_data_pos = 0; 6583 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6584 } else { 6585 advertising_set->scan_data_pos += data_to_upload; 6586 } 6587 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6588 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6589 return true; 6590 } 6591 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6592 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6593 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6594 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6595 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6596 advertising_set->advertising_handle, 6597 advertising_set->periodic_params.periodic_advertising_interval_min, 6598 advertising_set->periodic_params.periodic_advertising_interval_max, 6599 advertising_set->periodic_params.periodic_advertising_properties); 6600 return true; 6601 } 6602 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6603 uint16_t pos = advertising_set->periodic_data_pos; 6604 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6605 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6606 if ((operation & 0x02) != 0){ 6607 // last fragment or complete data 6608 operation |= 2; 6609 advertising_set->periodic_data_pos = 0; 6610 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6611 } else { 6612 advertising_set->periodic_data_pos += data_to_upload; 6613 } 6614 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6615 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6616 return true; 6617 } 6618 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6619 } 6620 } 6621 #endif 6622 6623 #endif 6624 6625 #ifdef ENABLE_LE_CENTRAL 6626 // if connect with whitelist was active and is not cancelled yet, wait until next time 6627 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6628 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6629 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6630 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6631 #endif 6632 #endif 6633 6634 // LE Whitelist Management 6635 if (whitelist_modification_pending){ 6636 // add/remove entries 6637 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6638 while (btstack_linked_list_iterator_has_next(&lit)){ 6639 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6640 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6641 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6642 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6643 bd_addr_type_t address_type = entry->address_type; 6644 bd_addr_t address; 6645 memcpy(address, entry->address, 6); 6646 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6647 // remove from whitelist if not scheduled for re-addition 6648 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6649 btstack_memory_whitelist_entry_free(entry); 6650 } 6651 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6652 return true; 6653 } 6654 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6655 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6656 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6657 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6658 return true; 6659 } 6660 } 6661 } 6662 6663 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6664 // LE Resolving List Management 6665 if (resolving_list_modification_pending) { 6666 uint16_t i; 6667 uint8_t null_16[16]; 6668 uint8_t local_irk_flipped[16]; 6669 const uint8_t *local_irk; 6670 switch (hci_stack->le_resolving_list_state) { 6671 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6672 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6673 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6674 return true; 6675 case LE_RESOLVING_LIST_READ_SIZE: 6676 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6677 hci_send_cmd(&hci_le_read_resolving_list_size); 6678 return true; 6679 case LE_RESOLVING_LIST_SEND_CLEAR: 6680 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6681 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6682 sizeof(hci_stack->le_resolving_list_add_entries)); 6683 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6684 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6685 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6686 sizeof(hci_stack->le_resolving_list_remove_entries)); 6687 hci_send_cmd(&hci_le_clear_resolving_list); 6688 return true; 6689 case LE_RESOLVING_LIST_SET_IRK: 6690 // set IRK used by RPA for undirected advertising 6691 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6692 local_irk = gap_get_persistent_irk(); 6693 reverse_128(local_irk, local_irk_flipped); 6694 memset(null_16, 0, sizeof(null_16)); 6695 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6696 null_16, local_irk_flipped); 6697 return true; 6698 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6699 // first remove old entries 6700 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6701 uint8_t offset = i >> 3; 6702 uint8_t mask = 1 << (i & 7); 6703 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6704 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6705 bd_addr_t peer_identity_addreses; 6706 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6707 sm_key_t peer_irk; 6708 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6709 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6710 6711 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6712 // trigger whitelist entry 'update' (work around for controller bug) 6713 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6714 while (btstack_linked_list_iterator_has_next(&lit)) { 6715 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6716 if (entry->address_type != peer_identity_addr_type) continue; 6717 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6718 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6719 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6720 } 6721 #endif 6722 6723 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6724 peer_identity_addreses); 6725 return true; 6726 } 6727 6728 // then add new entries 6729 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6730 uint8_t offset = i >> 3; 6731 uint8_t mask = 1 << (i & 7); 6732 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6733 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6734 bd_addr_t peer_identity_addreses; 6735 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6736 sm_key_t peer_irk; 6737 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6738 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6739 if (btstack_is_null(peer_irk, 16)) continue; 6740 local_irk = gap_get_persistent_irk(); 6741 // command uses format specifier 'P' that stores 16-byte value without flip 6742 uint8_t peer_irk_flipped[16]; 6743 reverse_128(local_irk, local_irk_flipped); 6744 reverse_128(peer_irk, peer_irk_flipped); 6745 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6746 peer_irk_flipped, local_irk_flipped); 6747 return true; 6748 } 6749 6750 // finally, set privacy mode 6751 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6752 uint8_t offset = i >> 3; 6753 uint8_t mask = 1 << (i & 7); 6754 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6755 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6756 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6757 // Network Privacy Mode is default 6758 continue; 6759 } 6760 bd_addr_t peer_identity_address; 6761 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6762 sm_key_t peer_irk; 6763 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6764 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6765 if (btstack_is_null(peer_irk, 16)) continue; 6766 // command uses format specifier 'P' that stores 16-byte value without flip 6767 uint8_t peer_irk_flipped[16]; 6768 reverse_128(peer_irk, peer_irk_flipped); 6769 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6770 return true; 6771 } 6772 break; 6773 6774 default: 6775 break; 6776 } 6777 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6778 } 6779 #endif 6780 6781 #ifdef ENABLE_LE_CENTRAL 6782 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6783 // LE Whitelist Management 6784 if (periodic_list_modification_pending){ 6785 // add/remove entries 6786 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6787 while (btstack_linked_list_iterator_has_next(&lit)){ 6788 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6789 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6790 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6791 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6792 return true; 6793 } 6794 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6795 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6796 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6797 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6798 return true; 6799 } 6800 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6801 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6802 btstack_memory_periodic_advertiser_list_entry_free(entry); 6803 } 6804 } 6805 } 6806 #endif 6807 #endif 6808 6809 #ifdef ENABLE_LE_CENTRAL 6810 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6811 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6812 if (hci_stack->le_past_set_default_params){ 6813 hci_stack->le_past_set_default_params = false; 6814 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6815 hci_stack->le_past_mode, 6816 hci_stack->le_past_skip, 6817 hci_stack->le_past_sync_timeout, 6818 hci_stack->le_past_cte_type); 6819 return true; 6820 } 6821 #endif 6822 #endif 6823 #endif 6824 6825 // post-pone all actions until stack is fully working 6826 if (hci_stack->state != HCI_STATE_WORKING) return false; 6827 6828 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6829 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6830 6831 // Phase 4: restore state 6832 6833 #ifdef ENABLE_LE_CENTRAL 6834 // re-start scanning 6835 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6836 hci_stack->le_scanning_active = true; 6837 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6838 if (hci_le_extended_advertising_supported()){ 6839 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6840 } else 6841 #endif 6842 { 6843 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6844 } 6845 return true; 6846 } 6847 #endif 6848 6849 #ifdef ENABLE_LE_CENTRAL 6850 // re-start connecting 6851 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6852 bd_addr_t null_addr; 6853 memset(null_addr, 0, 6); 6854 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6855 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6856 hci_send_le_create_connection(1, 0, null_addr); 6857 return true; 6858 } 6859 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6860 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6861 switch(hci_stack->le_periodic_sync_request){ 6862 case LE_CONNECTING_DIRECT: 6863 case LE_CONNECTING_WHITELIST: 6864 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6865 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6866 hci_stack->le_periodic_sync_options, 6867 hci_stack->le_periodic_sync_advertising_sid, 6868 hci_stack->le_periodic_sync_advertiser_address_type, 6869 hci_stack->le_periodic_sync_advertiser_address, 6870 hci_stack->le_periodic_sync_skip, 6871 hci_stack->le_periodic_sync_timeout, 6872 hci_stack->le_periodic_sync_cte_type); 6873 return true; 6874 default: 6875 break; 6876 } 6877 } 6878 #endif 6879 #endif 6880 6881 #ifdef ENABLE_LE_PERIPHERAL 6882 // re-start advertising 6883 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6884 // check if advertisements should be enabled given 6885 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6886 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6887 6888 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6889 if (hci_le_extended_advertising_supported()){ 6890 const uint8_t advertising_handles[] = { 0 }; 6891 const uint16_t durations[] = { 0 }; 6892 const uint16_t max_events[] = { 0 }; 6893 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6894 } else 6895 #endif 6896 { 6897 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6898 } 6899 return true; 6900 } 6901 6902 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6903 if (hci_le_extended_advertising_supported()) { 6904 btstack_linked_list_iterator_t it; 6905 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6906 while (btstack_linked_list_iterator_has_next(&it)) { 6907 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6908 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6909 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6910 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6911 const uint16_t durations[] = { advertising_set->enable_timeout }; 6912 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6913 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6914 return true; 6915 } 6916 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6917 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6918 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6919 uint8_t enable = 1; 6920 if (advertising_set->periodic_include_adi){ 6921 enable |= 2; 6922 } 6923 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6924 return true; 6925 } 6926 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6927 } 6928 } 6929 #endif 6930 #endif 6931 6932 return false; 6933 } 6934 6935 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6936 static bool hci_run_iso_tasks(void){ 6937 btstack_linked_list_iterator_t it; 6938 6939 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6940 return false; 6941 } 6942 6943 // BIG 6944 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6945 while (btstack_linked_list_iterator_has_next(&it)){ 6946 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6947 switch (big->state){ 6948 case LE_AUDIO_BIG_STATE_CREATE: 6949 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6950 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6951 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6952 hci_send_cmd(&hci_le_create_big, 6953 big->params->big_handle, 6954 big->params->advertising_handle, 6955 big->params->num_bis, 6956 big->params->sdu_interval_us, 6957 big->params->max_sdu, 6958 big->params->max_transport_latency_ms, 6959 big->params->rtn, 6960 big->params->phy, 6961 big->params->packing, 6962 big->params->framing, 6963 big->params->encryption, 6964 big->params->broadcast_code); 6965 return true; 6966 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6967 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6968 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); 6969 return true; 6970 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6971 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6972 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6973 return true; 6974 case LE_AUDIO_BIG_STATE_TERMINATE: 6975 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6976 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6977 return true; 6978 default: 6979 break; 6980 } 6981 } 6982 6983 // BIG Sync 6984 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6985 while (btstack_linked_list_iterator_has_next(&it)){ 6986 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6987 switch (big_sync->state){ 6988 case LE_AUDIO_BIG_STATE_CREATE: 6989 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6990 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6991 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6992 hci_send_cmd(&hci_le_big_create_sync, 6993 big_sync->params->big_handle, 6994 big_sync->params->sync_handle, 6995 big_sync->params->encryption, 6996 big_sync->params->broadcast_code, 6997 big_sync->params->mse, 6998 big_sync->params->big_sync_timeout_10ms, 6999 big_sync->params->num_bis, 7000 big_sync->params->bis_indices); 7001 return true; 7002 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7003 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7004 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); 7005 return true; 7006 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7007 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7008 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7009 return true; 7010 case LE_AUDIO_BIG_STATE_TERMINATE: 7011 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7012 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7013 return true; 7014 default: 7015 break; 7016 } 7017 } 7018 7019 // CIG 7020 bool cig_active; 7021 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7022 while (btstack_linked_list_iterator_has_next(&it)) { 7023 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7024 uint8_t i; 7025 // Set CIG Parameters 7026 uint8_t cis_id[MAX_NR_CIS]; 7027 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7028 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7029 uint8_t phy_c_to_p[MAX_NR_CIS]; 7030 uint8_t phy_p_to_c[MAX_NR_CIS]; 7031 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7032 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7033 switch (cig->state) { 7034 case LE_AUDIO_CIG_STATE_CREATE: 7035 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7036 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7037 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7038 le_audio_cig_params_t * params = cig->params; 7039 for (i = 0; i < params->num_cis; i++) { 7040 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7041 cis_id[i] = cis_params->cis_id; 7042 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7043 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7044 phy_c_to_p[i] = cis_params->phy_c_to_p; 7045 phy_p_to_c[i] = cis_params->phy_p_to_c; 7046 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7047 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7048 } 7049 hci_send_cmd(&hci_le_set_cig_parameters, 7050 cig->cig_id, 7051 params->sdu_interval_c_to_p, 7052 params->sdu_interval_p_to_c, 7053 params->worst_case_sca, 7054 params->packing, 7055 params->framing, 7056 params->max_transport_latency_c_to_p, 7057 params->max_transport_latency_p_to_c, 7058 params->num_cis, 7059 cis_id, 7060 max_sdu_c_to_p, 7061 max_sdu_p_to_c, 7062 phy_c_to_p, 7063 phy_p_to_c, 7064 rtn_c_to_p, 7065 rtn_p_to_c 7066 ); 7067 return true; 7068 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7069 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7070 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7071 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7072 for (i=0;i<cig->num_cis;i++){ 7073 cig->cis_setup_active[i] = true; 7074 } 7075 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7076 return true; 7077 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7078 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7079 // find next path to setup 7080 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7081 if (cig->cis_established[cis_index] == false) { 7082 continue; 7083 } 7084 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7085 bool setup = true; 7086 if (cis_direction == 0){ 7087 // 0 - input - host to controller 7088 // we are central => central to peripheral 7089 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7090 } else { 7091 // 1 - output - controller to host 7092 // we are central => peripheral to central 7093 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7094 } 7095 if (setup){ 7096 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7097 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7098 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7099 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); 7100 return true; 7101 } 7102 cig->state_vars.next_cis++; 7103 } 7104 // emit done 7105 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7106 break; 7107 case LE_AUDIO_CIG_STATE_REMOVE: 7108 // check if CIG Active 7109 cig_active = false; 7110 for (i = 0; i < cig->num_cis; i++) { 7111 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7112 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7113 if (stream != NULL){ 7114 cig_active = true; 7115 break; 7116 } 7117 } 7118 } 7119 if (cig_active == false){ 7120 btstack_linked_list_iterator_remove(&it); 7121 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7122 return true; 7123 } 7124 default: 7125 break; 7126 } 7127 } 7128 7129 // CIS Accept/Reject/Setup ISO Path/Close 7130 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7131 while (btstack_linked_list_iterator_has_next(&it)) { 7132 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7133 hci_con_handle_t con_handle; 7134 switch (iso_stream->state){ 7135 case HCI_ISO_STREAM_W2_ACCEPT: 7136 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7137 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7138 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7139 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7140 return true; 7141 case HCI_ISO_STREAM_W2_REJECT: 7142 con_handle = iso_stream->cis_handle; 7143 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7144 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7145 hci_iso_stream_finalize(iso_stream); 7146 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7147 return true; 7148 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7149 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7150 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7151 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7152 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); 7153 break; 7154 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7155 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7156 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7157 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7158 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); 7159 break; 7160 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7161 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7162 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7163 break; 7164 default: 7165 break; 7166 } 7167 } 7168 7169 return false; 7170 } 7171 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7172 #endif 7173 7174 static bool hci_run_general_pending_commands(void){ 7175 btstack_linked_item_t * it; 7176 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7177 hci_connection_t * connection = (hci_connection_t *) it; 7178 7179 switch(connection->state){ 7180 case SEND_CREATE_CONNECTION: 7181 switch(connection->address_type){ 7182 #ifdef ENABLE_CLASSIC 7183 case BD_ADDR_TYPE_ACL: 7184 log_info("sending hci_create_connection"); 7185 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7186 break; 7187 #endif 7188 default: 7189 #ifdef ENABLE_BLE 7190 #ifdef ENABLE_LE_CENTRAL 7191 log_info("sending hci_le_create_connection"); 7192 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7193 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7194 hci_send_le_create_connection(0, connection->address_type, connection->address); 7195 connection->state = SENT_CREATE_CONNECTION; 7196 #endif 7197 #endif 7198 break; 7199 } 7200 return true; 7201 7202 #ifdef ENABLE_CLASSIC 7203 case RECEIVED_CONNECTION_REQUEST: 7204 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7205 log_info("sending hci_accept_connection_request"); 7206 connection->state = ACCEPTED_CONNECTION_REQUEST; 7207 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7208 return true; 7209 } 7210 break; 7211 #endif 7212 case SEND_DISCONNECT: 7213 connection->state = SENT_DISCONNECT; 7214 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7215 return true; 7216 7217 default: 7218 break; 7219 } 7220 7221 // no further commands if connection is about to get shut down 7222 if (connection->state == SENT_DISCONNECT) continue; 7223 7224 #ifdef ENABLE_CLASSIC 7225 7226 // Handling link key request requires remote supported features 7227 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7228 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7229 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7230 7231 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7232 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7233 if (have_link_key && security_level_sufficient){ 7234 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7235 } else { 7236 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7237 } 7238 return true; 7239 } 7240 7241 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7242 log_info("denying to pin request"); 7243 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7244 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7245 return true; 7246 } 7247 7248 // security assessment requires remote features 7249 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7250 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7251 hci_ssp_assess_security_on_io_cap_request(connection); 7252 // 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 7253 } 7254 7255 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7256 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7257 // set authentication requirements: 7258 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7259 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7260 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7261 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7262 authreq |= 1; 7263 } 7264 bool bonding = hci_stack->bondable; 7265 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7266 // if we have received IO Cap Response, we're in responder role 7267 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7268 if (bonding && !remote_bonding){ 7269 log_info("Remote not bonding, dropping local flag"); 7270 bonding = false; 7271 } 7272 } 7273 if (bonding){ 7274 if (connection->bonding_flags & BONDING_DEDICATED){ 7275 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7276 } else { 7277 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7278 } 7279 } 7280 uint8_t have_oob_data = 0; 7281 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7282 if (connection->classic_oob_c_192 != NULL){ 7283 have_oob_data |= 1; 7284 } 7285 if (connection->classic_oob_c_256 != NULL){ 7286 have_oob_data |= 2; 7287 } 7288 #endif 7289 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7290 return true; 7291 } 7292 7293 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7294 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7295 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7296 return true; 7297 } 7298 7299 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7300 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7301 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7302 const uint8_t zero[16] = { 0 }; 7303 const uint8_t * r_192 = zero; 7304 const uint8_t * c_192 = zero; 7305 const uint8_t * r_256 = zero; 7306 const uint8_t * c_256 = zero; 7307 // verify P-256 OOB 7308 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7309 c_256 = connection->classic_oob_c_256; 7310 if (connection->classic_oob_r_256 != NULL) { 7311 r_256 = connection->classic_oob_r_256; 7312 } 7313 } 7314 // verify P-192 OOB 7315 if ((connection->classic_oob_c_192 != NULL)) { 7316 c_192 = connection->classic_oob_c_192; 7317 if (connection->classic_oob_r_192 != NULL) { 7318 r_192 = connection->classic_oob_r_192; 7319 } 7320 } 7321 7322 // assess security 7323 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7324 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7325 if (need_level_4 && !can_reach_level_4){ 7326 log_info("Level 4 required, but not possible -> abort"); 7327 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7328 // send oob negative reply 7329 c_256 = NULL; 7330 c_192 = NULL; 7331 } 7332 7333 // Reply 7334 if (c_256 != zero) { 7335 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7336 } else if (c_192 != zero){ 7337 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7338 } else { 7339 hci_stack->classic_oob_con_handle = connection->con_handle; 7340 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7341 } 7342 return true; 7343 } 7344 #endif 7345 7346 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7347 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7348 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7349 return true; 7350 } 7351 7352 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7353 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7354 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7355 return true; 7356 } 7357 7358 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7359 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7360 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7361 return true; 7362 } 7363 7364 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7365 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7366 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7367 connection->state = SENT_DISCONNECT; 7368 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7369 return true; 7370 } 7371 7372 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7373 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7374 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7375 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7376 return true; 7377 } 7378 7379 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7380 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7381 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7382 return true; 7383 } 7384 7385 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7386 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7387 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7388 return true; 7389 } 7390 7391 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7392 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7393 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7394 return true; 7395 } 7396 7397 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7398 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7399 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7400 return true; 7401 } 7402 7403 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7404 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7405 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7406 return true; 7407 } 7408 #endif 7409 7410 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7411 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7412 #ifdef ENABLE_CLASSIC 7413 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7414 #endif 7415 if (connection->state != SENT_DISCONNECT){ 7416 connection->state = SENT_DISCONNECT; 7417 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7418 return true; 7419 } 7420 } 7421 7422 #ifdef ENABLE_CLASSIC 7423 uint16_t sniff_min_interval; 7424 switch (connection->sniff_min_interval){ 7425 case 0: 7426 break; 7427 case 0xffff: 7428 connection->sniff_min_interval = 0; 7429 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7430 return true; 7431 default: 7432 sniff_min_interval = connection->sniff_min_interval; 7433 connection->sniff_min_interval = 0; 7434 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7435 return true; 7436 } 7437 7438 if (connection->sniff_subrating_max_latency != 0xffff){ 7439 uint16_t max_latency = connection->sniff_subrating_max_latency; 7440 connection->sniff_subrating_max_latency = 0; 7441 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7442 return true; 7443 } 7444 7445 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7446 uint8_t service_type = (uint8_t) connection->qos_service_type; 7447 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7448 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); 7449 return true; 7450 } 7451 7452 if (connection->request_role != HCI_ROLE_INVALID){ 7453 hci_role_t role = connection->request_role; 7454 connection->request_role = HCI_ROLE_INVALID; 7455 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7456 return true; 7457 } 7458 #endif 7459 7460 if (connection->gap_connection_tasks != 0){ 7461 #ifdef ENABLE_CLASSIC 7462 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7463 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7464 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7465 return true; 7466 } 7467 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7468 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7469 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7470 return true; 7471 } 7472 #endif 7473 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7474 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7475 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7476 return true; 7477 } 7478 #ifdef ENABLE_BLE 7479 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7480 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7481 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7482 return true; 7483 } 7484 #endif 7485 } 7486 7487 #ifdef ENABLE_BLE 7488 switch (connection->le_con_parameter_update_state){ 7489 // response to L2CAP CON PARAMETER UPDATE REQUEST 7490 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7491 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7492 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7493 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7494 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7495 return true; 7496 case CON_PARAMETER_UPDATE_REPLY: 7497 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7498 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7499 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7500 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7501 return true; 7502 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7503 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7504 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7505 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7506 return true; 7507 default: 7508 break; 7509 } 7510 if (connection->le_phy_update_all_phys != 0xffu){ 7511 uint8_t all_phys = connection->le_phy_update_all_phys; 7512 connection->le_phy_update_all_phys = 0xff; 7513 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); 7514 return true; 7515 } 7516 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7517 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7518 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7519 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7520 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7521 return true; 7522 } 7523 if (connection->le_past_advertising_handle != 0xff){ 7524 uint8_t advertising_handle = connection->le_past_advertising_handle; 7525 connection->le_past_advertising_handle = 0xff; 7526 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7527 return true; 7528 } 7529 #endif 7530 #endif 7531 } 7532 return false; 7533 } 7534 7535 static void hci_run(void){ 7536 7537 // stack state sub statemachines 7538 switch (hci_stack->state) { 7539 case HCI_STATE_INITIALIZING: 7540 hci_initializing_run(); 7541 break; 7542 case HCI_STATE_HALTING: 7543 hci_halting_run(); 7544 break; 7545 case HCI_STATE_FALLING_ASLEEP: 7546 hci_falling_asleep_run(); 7547 break; 7548 default: 7549 break; 7550 } 7551 7552 // allow to run after initialization to working transition 7553 if (hci_stack->state != HCI_STATE_WORKING){ 7554 return; 7555 } 7556 7557 bool done; 7558 7559 // send continuation fragments first, as they block the prepared packet buffer 7560 done = hci_run_acl_fragments(); 7561 if (done) return; 7562 7563 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7564 done = hci_run_iso_fragments(); 7565 if (done) return; 7566 #endif 7567 7568 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7569 // send host num completed packets next as they don't require num_cmd_packets > 0 7570 if (!hci_can_send_comand_packet_transport()) return; 7571 if (hci_stack->host_completed_packets){ 7572 hci_host_num_completed_packets(); 7573 return; 7574 } 7575 #endif 7576 7577 if (!hci_can_send_command_packet_now()) return; 7578 7579 // global/non-connection oriented commands 7580 7581 7582 #ifdef ENABLE_CLASSIC 7583 // general gap classic 7584 done = hci_run_general_gap_classic(); 7585 if (done) return; 7586 #endif 7587 7588 #ifdef ENABLE_BLE 7589 // general gap le 7590 done = hci_run_general_gap_le(); 7591 if (done) return; 7592 7593 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7594 // ISO related tasks, e.g. BIG create/terminate/sync 7595 done = hci_run_iso_tasks(); 7596 if (done) return; 7597 #endif 7598 #endif 7599 7600 // send pending HCI commands 7601 hci_run_general_pending_commands(); 7602 } 7603 7604 #ifdef ENABLE_CLASSIC 7605 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7606 // bits 6-9 are 'don't use' 7607 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7608 7609 // restrict packet types to local and remote supported 7610 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7611 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7612 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7613 } 7614 #endif 7615 7616 // funnel for sending cmd packet using single outgoing buffer 7617 static uint8_t hci_send_prepared_cmd_packet(void) { 7618 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7619 // cache opcode 7620 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7621 // get size 7622 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7623 // send packet 7624 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7625 // release packet buffer on error or for synchronous transport implementations 7626 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7627 hci_release_packet_buffer(); 7628 } 7629 return status; 7630 } 7631 7632 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7633 // house-keeping 7634 7635 #ifdef ENABLE_CLASSIC 7636 bd_addr_t addr; 7637 hci_connection_t * conn; 7638 #endif 7639 #ifdef ENABLE_LE_CENTRAL 7640 uint8_t initiator_filter_policy; 7641 #endif 7642 7643 uint16_t opcode = little_endian_read_16(packet, 0); 7644 switch (opcode) { 7645 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7646 hci_stack->loopback_mode = packet[3]; 7647 break; 7648 7649 #ifdef ENABLE_CLASSIC 7650 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7651 reverse_bd_addr(&packet[3], addr); 7652 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7653 7654 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7655 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7656 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7657 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7658 } 7659 7660 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7661 if (!conn) { 7662 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7663 if (!conn) { 7664 // notify client that alloc failed 7665 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7666 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7667 } 7668 conn->state = SEND_CREATE_CONNECTION; 7669 } 7670 7671 log_info("conn state %u", conn->state); 7672 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7673 switch (conn->state) { 7674 // if connection active exists 7675 case OPEN: 7676 // and OPEN, emit connection complete command 7677 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7678 // packet not sent to controller 7679 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7680 case RECEIVED_DISCONNECTION_COMPLETE: 7681 // create connection triggered in disconnect complete event, let's do it now 7682 break; 7683 case SEND_CREATE_CONNECTION: 7684 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7685 if (hci_classic_operation_active()){ 7686 return ERROR_CODE_SUCCESS; 7687 } 7688 #endif 7689 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7690 break; 7691 default: 7692 // otherwise, just ignore as it is already in the open process 7693 // packet not sent to controller 7694 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7695 } 7696 conn->state = SENT_CREATE_CONNECTION; 7697 7698 // track outgoing connection 7699 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7700 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7701 break; 7702 7703 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7704 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7705 if (conn == NULL) { 7706 // neither SCO nor ACL connection for con handle 7707 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7708 } else { 7709 uint16_t remote_supported_sco_packets; 7710 switch (conn->address_type){ 7711 case BD_ADDR_TYPE_ACL: 7712 // assert SCO connection does not exit 7713 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7714 return ERROR_CODE_COMMAND_DISALLOWED; 7715 } 7716 // cache remote sco packet types 7717 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7718 7719 // allocate connection struct 7720 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7721 HCI_ROLE_MASTER); 7722 if (!conn) { 7723 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7724 } 7725 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7726 break; 7727 case BD_ADDR_TYPE_SCO: 7728 // update of existing SCO connection 7729 break; 7730 default: 7731 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7732 } 7733 } 7734 7735 // conn refers to hci connection of type sco now 7736 7737 conn->state = SENT_CREATE_CONNECTION; 7738 7739 // track outgoing connection to handle command status with error 7740 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7741 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7742 7743 // setup_synchronous_connection? Voice setting at offset 22 7744 // TODO: compare to current setting if sco connection already active 7745 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7746 7747 // derive sco payload length from packet types 7748 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7749 break; 7750 7751 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7752 // get SCO connection 7753 reverse_bd_addr(&packet[3], addr); 7754 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7755 if (conn == NULL){ 7756 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7757 } 7758 7759 conn->state = ACCEPTED_CONNECTION_REQUEST; 7760 7761 // track outgoing connection to handle command status with error 7762 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7763 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7764 7765 // accept_synchronous_connection? Voice setting at offset 18 7766 // TODO: compare to current setting if sco connection already active 7767 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7768 7769 // derive sco payload length from packet types 7770 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7771 break; 7772 #endif 7773 7774 #ifdef ENABLE_BLE 7775 #ifdef ENABLE_LE_CENTRAL 7776 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7777 // white list used? 7778 initiator_filter_policy = packet[7]; 7779 switch (initiator_filter_policy) { 7780 case 0: 7781 // whitelist not used 7782 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7783 break; 7784 case 1: 7785 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7786 break; 7787 default: 7788 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7789 break; 7790 } 7791 // track outgoing connection 7792 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7793 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7794 break; 7795 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7796 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7797 // white list used? 7798 initiator_filter_policy = packet[3]; 7799 switch (initiator_filter_policy) { 7800 case 0: 7801 // whitelist not used 7802 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7803 break; 7804 case 1: 7805 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7806 break; 7807 default: 7808 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7809 break; 7810 } 7811 // track outgoing connection 7812 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7813 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7814 break; 7815 #endif 7816 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7817 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7818 break; 7819 #endif 7820 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7821 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7822 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7823 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7824 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7825 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7826 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7827 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7828 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7829 case HCI_OPCODE_HCI_LE_READ_PHY: 7830 case HCI_OPCODE_HCI_LE_SET_PHY: 7831 // conection handle is first command parameter 7832 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7833 break; 7834 #endif 7835 #endif /* ENABLE_BLE */ 7836 default: 7837 break; 7838 } 7839 7840 hci_stack->num_cmd_packets--; 7841 7842 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7843 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7844 uint8_t status; 7845 if (err == 0){ 7846 status = ERROR_CODE_SUCCESS; 7847 } else { 7848 status = ERROR_CODE_HARDWARE_FAILURE; 7849 } 7850 return status; 7851 } 7852 7853 // disconnect because of security block 7854 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7855 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7856 if (!connection) return; 7857 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7858 } 7859 7860 7861 // Configure Secure Simple Pairing 7862 7863 #ifdef ENABLE_CLASSIC 7864 7865 // enable will enable SSP during init 7866 void gap_ssp_set_enable(int enable){ 7867 hci_stack->ssp_enable = enable; 7868 } 7869 7870 static int hci_local_ssp_activated(void){ 7871 return gap_ssp_supported() && hci_stack->ssp_enable; 7872 } 7873 7874 // if set, BTstack will respond to io capability request using authentication requirement 7875 void gap_ssp_set_io_capability(int io_capability){ 7876 hci_stack->ssp_io_capability = io_capability; 7877 } 7878 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7879 hci_stack->ssp_authentication_requirement = authentication_requirement; 7880 } 7881 7882 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7883 void gap_ssp_set_auto_accept(int auto_accept){ 7884 hci_stack->ssp_auto_accept = auto_accept; 7885 } 7886 7887 void gap_secure_connections_enable(bool enable){ 7888 hci_stack->secure_connections_enable = enable; 7889 } 7890 bool gap_secure_connections_active(void){ 7891 return hci_stack->secure_connections_active; 7892 } 7893 7894 #endif 7895 7896 // va_list part of hci_send_cmd 7897 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7898 if (!hci_can_send_command_packet_now()){ 7899 log_error("hci_send_cmd called but cannot send packet now"); 7900 return ERROR_CODE_COMMAND_DISALLOWED; 7901 } 7902 7903 hci_reserve_packet_buffer(); 7904 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7905 return hci_send_prepared_cmd_packet(); 7906 } 7907 7908 /** 7909 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7910 */ 7911 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7912 va_list argptr; 7913 va_start(argptr, cmd); 7914 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7915 va_end(argptr); 7916 return status; 7917 } 7918 7919 // Create various non-HCI events. 7920 // TODO: generalize, use table similar to hci_create_command 7921 7922 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7923 // dump packet 7924 if (dump) { 7925 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7926 } 7927 7928 // dispatch to all event handlers 7929 btstack_linked_list_iterator_t it; 7930 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7931 while (btstack_linked_list_iterator_has_next(&it)){ 7932 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7933 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7934 } 7935 } 7936 7937 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7938 if (!hci_stack->acl_packet_handler) return; 7939 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7940 } 7941 7942 #ifdef ENABLE_CLASSIC 7943 static void hci_notify_if_sco_can_send_now(void){ 7944 // notify SCO sender if waiting 7945 if (!hci_stack->sco_waiting_for_can_send_now) return; 7946 if (hci_can_send_sco_packet_now()){ 7947 hci_stack->sco_waiting_for_can_send_now = 0; 7948 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7949 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7950 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7951 } 7952 } 7953 7954 // parsing end emitting has been merged to reduce code size 7955 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7956 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7957 7958 uint8_t * eir_data; 7959 ad_context_t context; 7960 const uint8_t * name; 7961 uint8_t name_len; 7962 7963 if (size < 3) return; 7964 7965 int event_type = hci_event_packet_get_type(packet); 7966 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7967 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7968 7969 switch (event_type){ 7970 case HCI_EVENT_INQUIRY_RESULT: 7971 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7972 if (size != (3 + (num_responses * 14))) return; 7973 break; 7974 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7975 if (size != 257) return; 7976 if (num_responses != 1) return; 7977 break; 7978 default: 7979 return; 7980 } 7981 7982 // event[1] is set at the end 7983 int i; 7984 for (i=0; i<num_responses;i++){ 7985 memset(event, 0, sizeof(event)); 7986 event[0] = GAP_EVENT_INQUIRY_RESULT; 7987 uint8_t event_size = 27; // if name is not set by EIR 7988 7989 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7990 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7991 (void)memcpy(&event[9], 7992 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7993 3); // class of device 7994 (void)memcpy(&event[12], 7995 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7996 2); // clock offset 7997 7998 switch (event_type){ 7999 case HCI_EVENT_INQUIRY_RESULT: 8000 // 14,15,16,17 = 0, size 18 8001 break; 8002 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8003 event[14] = 1; 8004 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8005 // 16,17 = 0, size 18 8006 break; 8007 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8008 event[14] = 1; 8009 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8010 // EIR packets only contain a single inquiry response 8011 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8012 name = NULL; 8013 // Iterate over EIR data 8014 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8015 uint8_t data_type = ad_iterator_get_data_type(&context); 8016 uint8_t data_size = ad_iterator_get_data_len(&context); 8017 const uint8_t * data = ad_iterator_get_data(&context); 8018 // Prefer Complete Local Name over Shortened Local Name 8019 switch (data_type){ 8020 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8021 if (name) continue; 8022 /* fall through */ 8023 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8024 name = data; 8025 name_len = data_size; 8026 break; 8027 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8028 if (data_size != 8) break; 8029 event[16] = 1; 8030 memcpy(&event[17], data, 8); 8031 break; 8032 default: 8033 break; 8034 } 8035 } 8036 if (name){ 8037 event[25] = 1; 8038 // truncate name if needed 8039 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8040 event[26] = len; 8041 (void)memcpy(&event[27], name, len); 8042 event_size += len; 8043 } 8044 break; 8045 default: 8046 return; 8047 } 8048 event[1] = event_size - 2; 8049 hci_emit_event(event, event_size, 1); 8050 } 8051 } 8052 #endif 8053 8054 void hci_emit_state(void){ 8055 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8056 uint8_t event[3]; 8057 event[0] = BTSTACK_EVENT_STATE; 8058 event[1] = sizeof(event) - 2u; 8059 event[2] = hci_stack->state; 8060 hci_emit_event(event, sizeof(event), 1); 8061 } 8062 8063 #ifdef ENABLE_CLASSIC 8064 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8065 uint8_t event[13]; 8066 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8067 event[1] = sizeof(event) - 2; 8068 event[2] = status; 8069 little_endian_store_16(event, 3, con_handle); 8070 reverse_bd_addr(address, &event[5]); 8071 event[11] = 1; // ACL connection 8072 event[12] = 0; // encryption disabled 8073 hci_emit_event(event, sizeof(event), 1); 8074 } 8075 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8076 if (disable_l2cap_timeouts) return; 8077 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8078 uint8_t event[4]; 8079 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8080 event[1] = sizeof(event) - 2; 8081 little_endian_store_16(event, 2, conn->con_handle); 8082 hci_emit_event(event, sizeof(event), 1); 8083 } 8084 #endif 8085 8086 #ifdef ENABLE_BLE 8087 #ifdef ENABLE_LE_CENTRAL 8088 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){ 8089 uint8_t hci_event[21]; 8090 hci_event[0] = HCI_EVENT_LE_META; 8091 hci_event[1] = sizeof(hci_event) - 2u; 8092 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8093 hci_event[3] = status; 8094 little_endian_store_16(hci_event, 4, con_handle); 8095 hci_event[6] = 0; // TODO: role 8096 hci_event[7] = address_type; 8097 reverse_bd_addr(address, &hci_event[8]); 8098 little_endian_store_16(hci_event, 14, 0); // interval 8099 little_endian_store_16(hci_event, 16, 0); // latency 8100 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8101 hci_event[20] = 0; // master clock accuracy 8102 hci_emit_event(hci_event, sizeof(hci_event), 1); 8103 // emit GAP event, too 8104 uint8_t gap_event[36]; 8105 hci_create_gap_connection_complete_event(hci_event, gap_event); 8106 hci_emit_event(gap_event, sizeof(gap_event), 1); 8107 } 8108 #endif 8109 #endif 8110 8111 static void hci_emit_transport_packet_sent(void){ 8112 // notify upper stack that it might be possible to send again 8113 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8114 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8115 } 8116 8117 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8118 uint8_t event[6]; 8119 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8120 event[1] = sizeof(event) - 2u; 8121 event[2] = 0; // status = OK 8122 little_endian_store_16(event, 3, con_handle); 8123 event[5] = reason; 8124 hci_emit_event(event, sizeof(event), 1); 8125 } 8126 8127 static void hci_emit_nr_connections_changed(void){ 8128 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8129 uint8_t event[3]; 8130 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8131 event[1] = sizeof(event) - 2u; 8132 event[2] = nr_hci_connections(); 8133 hci_emit_event(event, sizeof(event), 1); 8134 } 8135 8136 static void hci_emit_hci_open_failed(void){ 8137 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8138 uint8_t event[2]; 8139 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8140 event[1] = sizeof(event) - 2u; 8141 hci_emit_event(event, sizeof(event), 1); 8142 } 8143 8144 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8145 log_info("hci_emit_dedicated_bonding_result %u ", status); 8146 uint8_t event[9]; 8147 int pos = 0; 8148 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8149 event[pos++] = sizeof(event) - 2u; 8150 event[pos++] = status; 8151 reverse_bd_addr(address, &event[pos]); 8152 hci_emit_event(event, sizeof(event), 1); 8153 } 8154 8155 8156 #ifdef ENABLE_CLASSIC 8157 8158 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8159 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8160 uint8_t event[5]; 8161 int pos = 0; 8162 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8163 event[pos++] = sizeof(event) - 2; 8164 little_endian_store_16(event, 2, con_handle); 8165 pos += 2; 8166 event[pos++] = level; 8167 hci_emit_event(event, sizeof(event), 1); 8168 } 8169 8170 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8171 if (!connection) return LEVEL_0; 8172 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8173 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8174 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8175 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8176 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8177 // LEVEL 4 always requires 128 bit encrytion key size 8178 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8179 security_level = LEVEL_3; 8180 } 8181 return security_level; 8182 } 8183 8184 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8185 uint8_t event[4]; 8186 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8187 event[1] = sizeof(event) - 2; 8188 event[2] = discoverable; 8189 event[3] = connectable; 8190 hci_emit_event(event, sizeof(event), 1); 8191 } 8192 8193 // query if remote side supports eSCO 8194 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8195 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8196 if (!connection) return false; 8197 return (connection->remote_supported_features[0] & 1) != 0; 8198 } 8199 8200 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8201 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8202 if (!connection) return 0; 8203 return connection->remote_supported_sco_packets; 8204 } 8205 8206 static bool hci_ssp_supported(hci_connection_t * connection){ 8207 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8208 return (connection->bonding_flags & mask) == mask; 8209 } 8210 8211 // query if remote side supports SSP 8212 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8213 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8214 if (!connection) return false; 8215 return hci_ssp_supported(connection) ? 1 : 0; 8216 } 8217 8218 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8219 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8220 } 8221 8222 /** 8223 * Check if remote supported features query has completed 8224 */ 8225 bool hci_remote_features_available(hci_con_handle_t handle){ 8226 hci_connection_t * connection = hci_connection_for_handle(handle); 8227 if (!connection) return false; 8228 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8229 } 8230 8231 /** 8232 * Trigger remote supported features query 8233 */ 8234 8235 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8236 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8237 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8238 } 8239 } 8240 8241 void hci_remote_features_query(hci_con_handle_t con_handle){ 8242 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8243 if (!connection) return; 8244 hci_trigger_remote_features_for_connection(connection); 8245 hci_run(); 8246 } 8247 8248 // GAP API 8249 /** 8250 * @bbrief enable/disable bonding. default is enabled 8251 * @praram enabled 8252 */ 8253 void gap_set_bondable_mode(int enable){ 8254 hci_stack->bondable = enable ? 1 : 0; 8255 } 8256 /** 8257 * @brief Get bondable mode. 8258 * @return 1 if bondable 8259 */ 8260 int gap_get_bondable_mode(void){ 8261 return hci_stack->bondable; 8262 } 8263 8264 /** 8265 * @brief map link keys to security levels 8266 */ 8267 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8268 switch (link_key_type){ 8269 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8270 return LEVEL_4; 8271 case COMBINATION_KEY: 8272 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8273 return LEVEL_3; 8274 default: 8275 return LEVEL_2; 8276 } 8277 } 8278 8279 /** 8280 * @brief map link keys to secure connection yes/no 8281 */ 8282 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8283 switch (link_key_type){ 8284 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8285 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8286 return true; 8287 default: 8288 return false; 8289 } 8290 } 8291 8292 /** 8293 * @brief map link keys to authenticated 8294 */ 8295 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8296 switch (link_key_type){ 8297 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8298 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8299 return true; 8300 default: 8301 return false; 8302 } 8303 } 8304 8305 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8306 log_info("gap_mitm_protection_required_for_security_level %u", level); 8307 return level > LEVEL_2; 8308 } 8309 8310 /** 8311 * @brief get current security level 8312 */ 8313 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8314 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8315 if (!connection) return LEVEL_0; 8316 return gap_security_level_for_connection(connection); 8317 } 8318 8319 /** 8320 * @brief request connection to device to 8321 * @result GAP_AUTHENTICATION_RESULT 8322 */ 8323 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8324 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8325 if (!connection){ 8326 hci_emit_security_level(con_handle, LEVEL_0); 8327 return; 8328 } 8329 8330 btstack_assert(hci_is_le_connection(connection) == false); 8331 8332 // 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) 8333 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8334 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8335 requested_level = LEVEL_4; 8336 } 8337 8338 gap_security_level_t current_level = gap_security_level(con_handle); 8339 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8340 requested_level, connection->requested_security_level, current_level); 8341 8342 // authentication active if authentication request was sent or planned level > 0 8343 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8344 if (authentication_active){ 8345 // authentication already active 8346 if (connection->requested_security_level < requested_level){ 8347 // increase requested level as new level is higher 8348 // TODO: handle re-authentication when done 8349 connection->requested_security_level = requested_level; 8350 } 8351 } else { 8352 // no request active, notify if security sufficient 8353 if (requested_level <= current_level){ 8354 hci_emit_security_level(con_handle, current_level); 8355 return; 8356 } 8357 8358 // store request 8359 connection->requested_security_level = requested_level; 8360 8361 // start to authenticate connection 8362 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8363 8364 // request remote features if not already active, also trigger hci_run 8365 hci_remote_features_query(con_handle); 8366 } 8367 } 8368 8369 /** 8370 * @brief start dedicated bonding with device. disconnect after bonding 8371 * @param device 8372 * @param request MITM protection 8373 * @result GAP_DEDICATED_BONDING_COMPLETE 8374 */ 8375 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8376 8377 // create connection state machine 8378 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8379 8380 if (!connection){ 8381 return BTSTACK_MEMORY_ALLOC_FAILED; 8382 } 8383 8384 // delete link key 8385 gap_drop_link_key_for_bd_addr(device); 8386 8387 // configure LEVEL_2/3, dedicated bonding 8388 connection->state = SEND_CREATE_CONNECTION; 8389 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8390 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8391 connection->bonding_flags = BONDING_DEDICATED; 8392 8393 hci_run(); 8394 8395 return 0; 8396 } 8397 8398 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8399 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8400 if (connection == NULL){ 8401 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8402 } 8403 if (defer){ 8404 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8405 } else { 8406 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8407 // trigger disconnect 8408 hci_run(); 8409 } 8410 return ERROR_CODE_SUCCESS; 8411 } 8412 8413 void gap_set_local_name(const char * local_name){ 8414 hci_stack->local_name = local_name; 8415 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8416 // also update EIR if not set by user 8417 if (hci_stack->eir_data == NULL){ 8418 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8419 } 8420 hci_run(); 8421 } 8422 #endif 8423 8424 8425 #ifdef ENABLE_BLE 8426 8427 #ifdef ENABLE_LE_CENTRAL 8428 void gap_start_scan(void){ 8429 hci_stack->le_scanning_enabled = true; 8430 hci_run(); 8431 } 8432 8433 void gap_stop_scan(void){ 8434 hci_stack->le_scanning_enabled = false; 8435 hci_run(); 8436 } 8437 8438 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8439 hci_stack->le_scan_type = scan_type; 8440 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8441 hci_stack->le_scan_interval = scan_interval; 8442 hci_stack->le_scan_window = scan_window; 8443 hci_stack->le_scanning_param_update = true; 8444 hci_run(); 8445 } 8446 8447 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8448 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8449 } 8450 8451 void gap_set_scan_duplicate_filter(bool enabled){ 8452 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8453 } 8454 8455 void gap_set_scan_phys(uint8_t phys){ 8456 // LE Coded and LE 1M PHY 8457 hci_stack->le_scan_phys = phys & 0x05; 8458 } 8459 8460 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8461 // disallow le connection if outgoing already active 8462 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8463 log_error("le connect already active"); 8464 return ERROR_CODE_COMMAND_DISALLOWED; 8465 } 8466 8467 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8468 if (conn == NULL) { 8469 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8470 if (conn == false){ 8471 // alloc failed 8472 log_info("gap_connect: failed to alloc hci_connection_t"); 8473 return BTSTACK_MEMORY_ALLOC_FAILED; 8474 } 8475 } else { 8476 switch (conn->state) { 8477 case RECEIVED_DISCONNECTION_COMPLETE: 8478 // connection was just disconnected, reset state and allow re-connect 8479 conn->role = HCI_ROLE_MASTER; 8480 break; 8481 default: 8482 return ERROR_CODE_COMMAND_DISALLOWED; 8483 } 8484 } 8485 8486 // set le connecting state 8487 if (hci_is_le_connection_type(addr_type)){ 8488 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8489 } 8490 8491 // trigger connect 8492 log_info("gap_connect: send create connection next"); 8493 conn->state = SEND_CREATE_CONNECTION; 8494 hci_run(); 8495 return ERROR_CODE_SUCCESS; 8496 } 8497 8498 // @assumption: only a single outgoing LE Connection exists 8499 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8500 btstack_linked_item_t *it; 8501 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8502 hci_connection_t * conn = (hci_connection_t *) it; 8503 if (hci_is_le_connection(conn)){ 8504 switch (conn->state){ 8505 case SEND_CREATE_CONNECTION: 8506 case SENT_CREATE_CONNECTION: 8507 return conn; 8508 default: 8509 break; 8510 }; 8511 } 8512 } 8513 return NULL; 8514 } 8515 8516 uint8_t gap_connect_cancel(void){ 8517 hci_connection_t * conn; 8518 switch (hci_stack->le_connecting_request){ 8519 case LE_CONNECTING_IDLE: 8520 break; 8521 case LE_CONNECTING_WHITELIST: 8522 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8523 hci_run(); 8524 break; 8525 case LE_CONNECTING_DIRECT: 8526 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8527 conn = gap_get_outgoing_le_connection(); 8528 if (conn == NULL){ 8529 hci_run(); 8530 } else { 8531 switch (conn->state){ 8532 case SEND_CREATE_CONNECTION: 8533 // skip sending create connection and emit event instead 8534 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8535 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8536 btstack_memory_hci_connection_free( conn ); 8537 break; 8538 case SENT_CREATE_CONNECTION: 8539 // let hci_run_general_gap_le cancel outgoing connection 8540 hci_run(); 8541 break; 8542 default: 8543 break; 8544 } 8545 } 8546 break; 8547 default: 8548 btstack_unreachable(); 8549 break; 8550 } 8551 return ERROR_CODE_SUCCESS; 8552 } 8553 8554 /** 8555 * @brief Set connection parameters for outgoing connections 8556 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8557 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8558 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8559 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8560 * @param conn_latency, default: 4 8561 * @param supervision_timeout (unit: 10ms), default: 720 ms 8562 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8563 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8564 */ 8565 8566 void gap_set_connection_phys(uint8_t phys){ 8567 // LE Coded, LE 1M, LE 2M PHY 8568 hci_stack->le_connection_phys = phys & 7; 8569 } 8570 8571 #endif 8572 8573 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8574 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8575 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8576 hci_stack->le_connection_scan_interval = conn_scan_interval; 8577 hci_stack->le_connection_scan_window = conn_scan_window; 8578 hci_stack->le_connection_interval_min = conn_interval_min; 8579 hci_stack->le_connection_interval_max = conn_interval_max; 8580 hci_stack->le_connection_latency = conn_latency; 8581 hci_stack->le_supervision_timeout = supervision_timeout; 8582 hci_stack->le_minimum_ce_length = min_ce_length; 8583 hci_stack->le_maximum_ce_length = max_ce_length; 8584 } 8585 8586 /** 8587 * @brief Updates the connection parameters for a given LE connection 8588 * @param handle 8589 * @param conn_interval_min (unit: 1.25ms) 8590 * @param conn_interval_max (unit: 1.25ms) 8591 * @param conn_latency 8592 * @param supervision_timeout (unit: 10ms) 8593 * @return 0 if ok 8594 */ 8595 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8596 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8597 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8598 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8599 connection->le_conn_interval_min = conn_interval_min; 8600 connection->le_conn_interval_max = conn_interval_max; 8601 connection->le_conn_latency = conn_latency; 8602 connection->le_supervision_timeout = supervision_timeout; 8603 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8604 hci_run(); 8605 return 0; 8606 } 8607 8608 /** 8609 * @brief Request an update of the connection parameter for a given LE connection 8610 * @param handle 8611 * @param conn_interval_min (unit: 1.25ms) 8612 * @param conn_interval_max (unit: 1.25ms) 8613 * @param conn_latency 8614 * @param supervision_timeout (unit: 10ms) 8615 * @return 0 if ok 8616 */ 8617 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8618 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8619 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8620 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8621 connection->le_conn_interval_min = conn_interval_min; 8622 connection->le_conn_interval_max = conn_interval_max; 8623 connection->le_conn_latency = conn_latency; 8624 connection->le_supervision_timeout = supervision_timeout; 8625 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8626 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8627 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8628 return 0; 8629 } 8630 8631 #ifdef ENABLE_LE_PERIPHERAL 8632 8633 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8634 static void hci_assert_advertisement_set_0_ready(void){ 8635 // force advertising set creation for legacy LE Advertising 8636 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8637 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8638 } 8639 } 8640 #endif 8641 8642 /** 8643 * @brief Set Advertisement 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_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8649 hci_stack->le_advertisements_data_len = advertising_data_length; 8650 hci_stack->le_advertisements_data = advertising_data; 8651 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_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 Scan Response Data 8660 * @param advertising_data_length 8661 * @param advertising_data (max 31 octets) 8662 * @note data is not copied, pointer has to stay valid 8663 */ 8664 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8665 hci_stack->le_scan_response_data_len = scan_response_data_length; 8666 hci_stack->le_scan_response_data = scan_response_data; 8667 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8668 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8669 hci_assert_advertisement_set_0_ready(); 8670 #endif 8671 hci_run(); 8672 } 8673 8674 /** 8675 * @brief Set Advertisement Parameters 8676 * @param adv_int_min 8677 * @param adv_int_max 8678 * @param adv_type 8679 * @param direct_address_type 8680 * @param direct_address 8681 * @param channel_map 8682 * @param filter_policy 8683 * 8684 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8685 */ 8686 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8687 uint8_t direct_address_typ, bd_addr_t direct_address, 8688 uint8_t channel_map, uint8_t filter_policy) { 8689 8690 hci_stack->le_advertisements_interval_min = adv_int_min; 8691 hci_stack->le_advertisements_interval_max = adv_int_max; 8692 hci_stack->le_advertisements_type = adv_type; 8693 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8694 hci_stack->le_advertisements_channel_map = channel_map; 8695 hci_stack->le_advertisements_filter_policy = filter_policy; 8696 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8697 6); 8698 8699 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8700 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8701 hci_run(); 8702 } 8703 8704 /** 8705 * @brief Enable/Disable Advertisements 8706 * @param enabled 8707 */ 8708 void gap_advertisements_enable(int enabled){ 8709 if (enabled == 0){ 8710 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8711 } else { 8712 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8713 } 8714 hci_update_advertisements_enabled_for_current_roles(); 8715 hci_run(); 8716 } 8717 8718 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8719 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8720 btstack_linked_list_iterator_t it; 8721 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8722 while (btstack_linked_list_iterator_has_next(&it)){ 8723 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8724 if ( item->advertising_handle == advertising_handle ) { 8725 return item; 8726 } 8727 } 8728 return NULL; 8729 } 8730 8731 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8732 hci_stack->le_resolvable_private_address_update_s = update_s; 8733 hci_run(); 8734 return ERROR_CODE_SUCCESS; 8735 } 8736 8737 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8738 // find free advertisement handle 8739 uint8_t advertisement_handle; 8740 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8741 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8742 } 8743 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8744 // clear 8745 memset(storage, 0, sizeof(le_advertising_set_t)); 8746 // copy params 8747 storage->advertising_handle = advertisement_handle; 8748 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8749 // add to list 8750 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8751 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8752 *out_advertising_handle = advertisement_handle; 8753 // set tasks and start 8754 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8755 hci_run(); 8756 return ERROR_CODE_SUCCESS; 8757 } 8758 8759 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8760 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8761 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8762 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8763 // set tasks and start 8764 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8765 hci_run(); 8766 return ERROR_CODE_SUCCESS; 8767 } 8768 8769 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8770 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8771 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8772 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8773 return ERROR_CODE_SUCCESS; 8774 } 8775 8776 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8777 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8778 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8779 memcpy(advertising_set->random_address, random_address, 6); 8780 // set tasks and start 8781 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8782 hci_run(); 8783 return ERROR_CODE_SUCCESS; 8784 } 8785 8786 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8787 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8788 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8789 advertising_set->adv_data = advertising_data; 8790 advertising_set->adv_data_len = advertising_data_length; 8791 // set tasks and start 8792 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8793 hci_run(); 8794 return ERROR_CODE_SUCCESS; 8795 } 8796 8797 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){ 8798 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8799 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8800 advertising_set->scan_data = scan_response_data; 8801 advertising_set->scan_data_len = scan_response_data_length; 8802 // set tasks and start 8803 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8804 hci_run(); 8805 return ERROR_CODE_SUCCESS; 8806 } 8807 8808 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8809 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8810 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8811 advertising_set->enable_timeout = timeout; 8812 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8813 // set tasks and start 8814 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8815 hci_run(); 8816 return ERROR_CODE_SUCCESS; 8817 } 8818 8819 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8820 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8821 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8822 // set tasks and start 8823 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8824 hci_run(); 8825 return ERROR_CODE_SUCCESS; 8826 } 8827 8828 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8829 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8830 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8831 // set tasks and start 8832 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8833 hci_run(); 8834 return ERROR_CODE_SUCCESS; 8835 } 8836 8837 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8838 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8839 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8840 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8841 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8842 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8843 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8844 // set tasks and start 8845 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8846 hci_run(); 8847 return ERROR_CODE_SUCCESS; 8848 } 8849 8850 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8851 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8852 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8853 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8854 return ERROR_CODE_SUCCESS; 8855 } 8856 8857 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8858 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8859 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8860 advertising_set->periodic_data = periodic_data; 8861 advertising_set->periodic_data_len = periodic_data_length; 8862 // set tasks and start 8863 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8864 hci_run(); 8865 return ERROR_CODE_SUCCESS; 8866 } 8867 8868 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8869 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8870 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8871 // set tasks and start 8872 advertising_set->periodic_include_adi = include_adi; 8873 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8874 hci_run(); 8875 return ERROR_CODE_SUCCESS; 8876 } 8877 8878 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8879 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8880 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8881 // set tasks and start 8882 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8883 hci_run(); 8884 return ERROR_CODE_SUCCESS; 8885 } 8886 8887 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8888 hci_stack->le_past_mode = mode; 8889 hci_stack->le_past_skip = skip; 8890 hci_stack->le_past_sync_timeout = sync_timeout; 8891 hci_stack->le_past_cte_type = cte_type; 8892 hci_stack->le_past_set_default_params = true; 8893 hci_run(); 8894 return ERROR_CODE_SUCCESS; 8895 } 8896 8897 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8898 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8899 if (hci_connection == NULL){ 8900 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8901 } 8902 hci_connection->le_past_sync_handle = sync_handle; 8903 hci_connection->le_past_service_data = service_data; 8904 hci_run(); 8905 return ERROR_CODE_SUCCESS; 8906 } 8907 8908 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8909 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8910 if (hci_connection == NULL){ 8911 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8912 } 8913 hci_connection->le_past_advertising_handle = advertising_handle; 8914 hci_connection->le_past_service_data = service_data; 8915 hci_run(); 8916 return ERROR_CODE_SUCCESS; 8917 } 8918 8919 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8920 8921 #endif 8922 8923 #endif 8924 8925 void hci_le_set_own_address_type(uint8_t own_address_type){ 8926 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8927 if (own_address_type == hci_stack->le_own_addr_type) return; 8928 hci_stack->le_own_addr_type = own_address_type; 8929 8930 #ifdef ENABLE_LE_PERIPHERAL 8931 // update advertisement parameters, too 8932 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8933 hci_run(); 8934 #endif 8935 #ifdef ENABLE_LE_CENTRAL 8936 // note: we don't update scan parameters or modify ongoing connection attempts 8937 #endif 8938 } 8939 8940 void hci_le_random_address_set(const bd_addr_t random_address){ 8941 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8942 memcpy(hci_stack->le_random_address, random_address, 6); 8943 hci_stack->le_random_address_set = true; 8944 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8945 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8946 if (hci_le_extended_advertising_supported()){ 8947 hci_assert_advertisement_set_0_ready(); 8948 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8949 } 8950 #endif 8951 hci_run(); 8952 } 8953 8954 #endif 8955 8956 uint8_t gap_disconnect(hci_con_handle_t handle){ 8957 hci_connection_t * conn = hci_connection_for_handle(handle); 8958 if (!conn){ 8959 hci_emit_disconnection_complete(handle, 0); 8960 return 0; 8961 } 8962 // ignore if already disconnected 8963 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8964 return 0; 8965 } 8966 conn->state = SEND_DISCONNECT; 8967 hci_run(); 8968 return 0; 8969 } 8970 8971 int gap_read_rssi(hci_con_handle_t con_handle){ 8972 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8973 if (hci_connection == NULL) return 0; 8974 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8975 hci_run(); 8976 return 1; 8977 } 8978 8979 /** 8980 * @brief Get connection type 8981 * @param con_handle 8982 * @result connection_type 8983 */ 8984 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8985 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8986 if (!conn) return GAP_CONNECTION_INVALID; 8987 switch (conn->address_type){ 8988 case BD_ADDR_TYPE_LE_PUBLIC: 8989 case BD_ADDR_TYPE_LE_RANDOM: 8990 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8991 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8992 return GAP_CONNECTION_LE; 8993 case BD_ADDR_TYPE_SCO: 8994 return GAP_CONNECTION_SCO; 8995 case BD_ADDR_TYPE_ACL: 8996 return GAP_CONNECTION_ACL; 8997 default: 8998 return GAP_CONNECTION_INVALID; 8999 } 9000 } 9001 9002 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9003 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9004 if (!conn) return HCI_ROLE_INVALID; 9005 return (hci_role_t) conn->role; 9006 } 9007 9008 9009 #ifdef ENABLE_CLASSIC 9010 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9011 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9012 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9013 conn->request_role = role; 9014 hci_run(); 9015 return ERROR_CODE_SUCCESS; 9016 } 9017 #endif 9018 9019 #ifdef ENABLE_BLE 9020 9021 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){ 9022 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9023 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9024 9025 conn->le_phy_update_all_phys = all_phys; 9026 conn->le_phy_update_tx_phys = tx_phys; 9027 conn->le_phy_update_rx_phys = rx_phys; 9028 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9029 9030 hci_run(); 9031 9032 return 0; 9033 } 9034 9035 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9036 9037 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9038 // incorrect configuration: 9039 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9040 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9041 btstack_assert(false); 9042 #endif 9043 9044 // check if already in list 9045 btstack_linked_list_iterator_t it; 9046 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9047 while (btstack_linked_list_iterator_has_next(&it)) { 9048 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9049 if (entry->address_type != address_type) { 9050 continue; 9051 } 9052 if (memcmp(entry->address, address, 6) != 0) { 9053 continue; 9054 } 9055 9056 // if already on controller: 9057 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9058 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9059 // drop remove request 9060 entry->state = LE_WHITELIST_ON_CONTROLLER; 9061 return ERROR_CODE_SUCCESS; 9062 } else { 9063 // disallow as already on controller 9064 return ERROR_CODE_COMMAND_DISALLOWED; 9065 } 9066 } 9067 9068 // assume scheduled to add 9069 return ERROR_CODE_COMMAND_DISALLOWED; 9070 } 9071 9072 // alloc and add to list 9073 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9074 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9075 entry->address_type = address_type; 9076 (void)memcpy(entry->address, address, 6); 9077 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9078 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9079 return ERROR_CODE_SUCCESS; 9080 } 9081 9082 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9083 btstack_linked_list_iterator_t it; 9084 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9085 while (btstack_linked_list_iterator_has_next(&it)){ 9086 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9087 if (entry->address_type != address_type) { 9088 continue; 9089 } 9090 if (memcmp(entry->address, address, 6) != 0) { 9091 continue; 9092 } 9093 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9094 // remove from controller if already present 9095 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9096 } else { 9097 // directly remove entry from whitelist 9098 btstack_linked_list_iterator_remove(&it); 9099 btstack_memory_whitelist_entry_free(entry); 9100 } 9101 return ERROR_CODE_SUCCESS; 9102 } 9103 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9104 } 9105 9106 static void hci_whitelist_clear(void){ 9107 btstack_linked_list_iterator_t it; 9108 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9109 while (btstack_linked_list_iterator_has_next(&it)){ 9110 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9111 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9112 // remove from controller if already present 9113 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9114 continue; 9115 } 9116 // directly remove entry from whitelist 9117 btstack_linked_list_iterator_remove(&it); 9118 btstack_memory_whitelist_entry_free(entry); 9119 } 9120 } 9121 9122 /** 9123 * @brief Clear Whitelist 9124 * @return 0 if ok 9125 */ 9126 uint8_t gap_whitelist_clear(void){ 9127 hci_whitelist_clear(); 9128 hci_run(); 9129 return ERROR_CODE_SUCCESS; 9130 } 9131 9132 /** 9133 * @brief Add Device to Whitelist 9134 * @param address_typ 9135 * @param address 9136 * @return 0 if ok 9137 */ 9138 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9139 uint8_t status = hci_whitelist_add(address_type, address); 9140 if (status){ 9141 return status; 9142 } 9143 hci_run(); 9144 return ERROR_CODE_SUCCESS; 9145 } 9146 9147 /** 9148 * @brief Remove Device from Whitelist 9149 * @param address_typ 9150 * @param address 9151 * @return 0 if ok 9152 */ 9153 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9154 uint8_t status = hci_whitelist_remove(address_type, address); 9155 if (status){ 9156 return status; 9157 } 9158 hci_run(); 9159 return ERROR_CODE_SUCCESS; 9160 } 9161 9162 #ifdef ENABLE_LE_CENTRAL 9163 /** 9164 * @brief Connect with Whitelist 9165 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9166 * @return - if ok 9167 */ 9168 uint8_t gap_connect_with_whitelist(void){ 9169 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9170 return ERROR_CODE_COMMAND_DISALLOWED; 9171 } 9172 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9173 hci_run(); 9174 return ERROR_CODE_SUCCESS; 9175 } 9176 9177 /** 9178 * @brief Auto Connection Establishment - Start Connecting to device 9179 * @param address_typ 9180 * @param address 9181 * @return 0 if ok 9182 */ 9183 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9184 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9185 return ERROR_CODE_COMMAND_DISALLOWED; 9186 } 9187 9188 uint8_t status = hci_whitelist_add(address_type, address); 9189 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9190 return status; 9191 } 9192 9193 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9194 9195 hci_run(); 9196 return ERROR_CODE_SUCCESS; 9197 } 9198 9199 /** 9200 * @brief Auto Connection Establishment - Stop Connecting to device 9201 * @param address_typ 9202 * @param address 9203 * @return 0 if ok 9204 */ 9205 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9206 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9207 return ERROR_CODE_COMMAND_DISALLOWED; 9208 } 9209 9210 hci_whitelist_remove(address_type, address); 9211 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9212 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9213 } 9214 hci_run(); 9215 return 0; 9216 } 9217 9218 /** 9219 * @brief Auto Connection Establishment - Stop everything 9220 * @note Convenience function to stop all active auto connection attempts 9221 */ 9222 uint8_t gap_auto_connection_stop_all(void){ 9223 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9224 return ERROR_CODE_COMMAND_DISALLOWED; 9225 } 9226 hci_whitelist_clear(); 9227 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9228 hci_run(); 9229 return ERROR_CODE_SUCCESS; 9230 } 9231 9232 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9233 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9234 if (!conn) return 0; 9235 return conn->le_connection_interval; 9236 } 9237 #endif 9238 #endif 9239 9240 #ifdef ENABLE_CLASSIC 9241 /** 9242 * @brief Set Extended Inquiry Response data 9243 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9244 * @note has to be done before stack starts up 9245 */ 9246 void gap_set_extended_inquiry_response(const uint8_t * data){ 9247 hci_stack->eir_data = data; 9248 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9249 hci_run(); 9250 } 9251 9252 /** 9253 * @brief Start GAP Classic Inquiry 9254 * @param duration in 1.28s units 9255 * @return 0 if ok 9256 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9257 */ 9258 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9259 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9260 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9261 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9262 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9263 } 9264 hci_stack->inquiry_state = duration_in_1280ms_units; 9265 hci_stack->inquiry_max_period_length = 0; 9266 hci_stack->inquiry_min_period_length = 0; 9267 hci_run(); 9268 return 0; 9269 } 9270 9271 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9272 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9273 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9274 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9275 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9276 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9277 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9278 9279 hci_stack->inquiry_state = duration; 9280 hci_stack->inquiry_max_period_length = max_period_length; 9281 hci_stack->inquiry_min_period_length = min_period_length; 9282 hci_run(); 9283 return 0; 9284 } 9285 9286 /** 9287 * @brief Stop GAP Classic Inquiry 9288 * @return 0 if ok 9289 */ 9290 int gap_inquiry_stop(void){ 9291 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9292 // emit inquiry complete event, before it even started 9293 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9294 hci_emit_event(event, sizeof(event), 1); 9295 return 0; 9296 } 9297 switch (hci_stack->inquiry_state){ 9298 case GAP_INQUIRY_STATE_ACTIVE: 9299 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9300 hci_run(); 9301 return ERROR_CODE_SUCCESS; 9302 case GAP_INQUIRY_STATE_PERIODIC: 9303 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9304 hci_run(); 9305 return ERROR_CODE_SUCCESS; 9306 default: 9307 return ERROR_CODE_COMMAND_DISALLOWED; 9308 } 9309 } 9310 9311 void gap_inquiry_set_lap(uint32_t lap){ 9312 hci_stack->inquiry_lap = lap; 9313 } 9314 9315 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9316 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9317 hci_stack->inquiry_scan_window = inquiry_scan_window; 9318 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9319 hci_run(); 9320 } 9321 9322 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9323 { 9324 hci_stack->inquiry_tx_power_level = tx_power; 9325 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9326 hci_run(); 9327 } 9328 9329 9330 /** 9331 * @brief Remote Name Request 9332 * @param addr 9333 * @param page_scan_repetition_mode 9334 * @param clock_offset only used when bit 15 is set 9335 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9336 */ 9337 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9338 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9339 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9340 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9341 hci_stack->remote_name_clock_offset = clock_offset; 9342 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9343 hci_run(); 9344 return 0; 9345 } 9346 9347 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9348 hci_stack->gap_pairing_state = state; 9349 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9350 hci_run(); 9351 return 0; 9352 } 9353 9354 /** 9355 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9356 * @param addr 9357 * @param pin_data 9358 * @param pin_len 9359 * @return 0 if ok 9360 */ 9361 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9362 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9363 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9364 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9365 hci_stack->gap_pairing_pin_len = pin_len; 9366 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9367 } 9368 9369 /** 9370 * @brief Legacy Pairing Pin Code Response 9371 * @param addr 9372 * @param pin 9373 * @return 0 if ok 9374 */ 9375 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9376 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9377 } 9378 9379 /** 9380 * @brief Abort Legacy Pairing 9381 * @param addr 9382 * @param pin 9383 * @return 0 if ok 9384 */ 9385 int gap_pin_code_negative(bd_addr_t addr){ 9386 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9387 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9388 } 9389 9390 /** 9391 * @brief SSP Passkey Response 9392 * @param addr 9393 * @param passkey 9394 * @return 0 if ok 9395 */ 9396 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9397 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9398 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9399 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9400 } 9401 9402 /** 9403 * @brief Abort SSP Passkey Entry/Pairing 9404 * @param addr 9405 * @param pin 9406 * @return 0 if ok 9407 */ 9408 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9409 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9410 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9411 } 9412 9413 /** 9414 * @brief Accept SSP Numeric Comparison 9415 * @param addr 9416 * @param passkey 9417 * @return 0 if ok 9418 */ 9419 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9420 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9421 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9422 } 9423 9424 /** 9425 * @brief Abort SSP Numeric Comparison/Pairing 9426 * @param addr 9427 * @param pin 9428 * @return 0 if ok 9429 */ 9430 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9431 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9432 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9433 } 9434 9435 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9436 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9437 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9438 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9439 connectionSetAuthenticationFlags(conn, flag); 9440 hci_run(); 9441 return ERROR_CODE_SUCCESS; 9442 } 9443 #endif 9444 9445 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9446 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9447 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9448 } 9449 9450 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9451 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9452 } 9453 #endif 9454 9455 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9456 /** 9457 * @brief Report Remote OOB Data 9458 * @param bd_addr 9459 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9460 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9461 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9462 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9463 */ 9464 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){ 9465 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9466 if (connection == NULL) { 9467 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9468 } 9469 connection->classic_oob_c_192 = c_192; 9470 connection->classic_oob_r_192 = r_192; 9471 9472 // ignore P-256 if not supported by us 9473 if (hci_stack->secure_connections_active){ 9474 connection->classic_oob_c_256 = c_256; 9475 connection->classic_oob_r_256 = r_256; 9476 } 9477 9478 return ERROR_CODE_SUCCESS; 9479 } 9480 /** 9481 * @brief Generate new OOB data 9482 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9483 */ 9484 void gap_ssp_generate_oob_data(void){ 9485 hci_stack->classic_read_local_oob_data = true; 9486 hci_run(); 9487 } 9488 9489 #endif 9490 9491 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9492 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9493 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9494 if (connection == NULL) { 9495 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9496 } 9497 9498 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9499 connection->link_key_type = type; 9500 9501 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9502 } 9503 9504 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9505 /** 9506 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9507 * @param inquiry_mode see bluetooth_defines.h 9508 */ 9509 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9510 hci_stack->inquiry_mode = inquiry_mode; 9511 } 9512 9513 /** 9514 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9515 */ 9516 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9517 hci_stack->sco_voice_setting = voice_setting; 9518 } 9519 9520 /** 9521 * @brief Get SCO Voice Setting 9522 * @return current voice setting 9523 */ 9524 uint16_t hci_get_sco_voice_setting(void){ 9525 return hci_stack->sco_voice_setting; 9526 } 9527 9528 static int hci_have_usb_transport(void){ 9529 if (!hci_stack->hci_transport) return 0; 9530 const char * transport_name = hci_stack->hci_transport->name; 9531 if (!transport_name) return 0; 9532 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9533 } 9534 9535 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9536 uint16_t sco_packet_length = 0; 9537 9538 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9539 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9540 int multiplier; 9541 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9542 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9543 multiplier = 2; 9544 } else { 9545 multiplier = 1; 9546 } 9547 #endif 9548 9549 #ifdef ENABLE_SCO_OVER_HCI 9550 if (hci_have_usb_transport()){ 9551 // see Core Spec for H2 USB Transfer. 9552 // 3 byte SCO header + 24 bytes per connection 9553 // @note multiple sco connections not supported currently 9554 sco_packet_length = 3 + 24 * multiplier; 9555 } else { 9556 // 3 byte SCO header + SCO packet length over the air 9557 sco_packet_length = 3 + payload_size * multiplier; 9558 // assert that it still fits inside an SCO buffer 9559 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9560 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9561 } 9562 } 9563 #endif 9564 #ifdef HAVE_SCO_TRANSPORT 9565 // 3 byte SCO header + SCO packet length over the air 9566 sco_packet_length = 3 + payload_size * multiplier; 9567 // assert that it still fits inside an SCO buffer 9568 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9569 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9570 } 9571 #endif 9572 return sco_packet_length; 9573 } 9574 9575 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9576 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9577 if (connection != NULL){ 9578 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9579 } 9580 return 0; 9581 } 9582 9583 uint16_t hci_get_sco_packet_length(void){ 9584 btstack_linked_list_iterator_t it; 9585 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9586 while (btstack_linked_list_iterator_has_next(&it)){ 9587 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9588 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9589 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9590 } 9591 } 9592 return 0; 9593 } 9594 9595 /** 9596 * @brief Sets the master/slave policy 9597 * @param policy (0: attempt to become master, 1: let connecting device decide) 9598 */ 9599 void hci_set_master_slave_policy(uint8_t policy){ 9600 hci_stack->master_slave_policy = policy; 9601 } 9602 9603 #endif 9604 9605 HCI_STATE hci_get_state(void){ 9606 return hci_stack->state; 9607 } 9608 9609 #ifdef ENABLE_CLASSIC 9610 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9611 hci_stack->gap_classic_accept_callback = accept_callback; 9612 } 9613 #endif 9614 9615 /** 9616 * @brief Set callback for Bluetooth Hardware Error 9617 */ 9618 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9619 hci_stack->hardware_error_callback = fn; 9620 } 9621 9622 void hci_disconnect_all(void){ 9623 btstack_linked_list_iterator_t it; 9624 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9625 while (btstack_linked_list_iterator_has_next(&it)){ 9626 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9627 if (con->state == SENT_DISCONNECT) continue; 9628 con->state = SEND_DISCONNECT; 9629 } 9630 hci_run(); 9631 } 9632 9633 uint16_t hci_get_manufacturer(void){ 9634 return hci_stack->manufacturer; 9635 } 9636 9637 #ifdef ENABLE_BLE 9638 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9639 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9640 if (!hci_con) return NULL; 9641 return &hci_con->sm_connection; 9642 } 9643 9644 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9645 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9646 #endif 9647 9648 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9649 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9650 if (hci_connection == NULL) return 0; 9651 if (hci_is_le_connection(hci_connection)){ 9652 #ifdef ENABLE_BLE 9653 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9654 if (sm_conn->sm_connection_encrypted != 0u) { 9655 return sm_conn->sm_actual_encryption_key_size; 9656 } 9657 #endif 9658 } else { 9659 #ifdef ENABLE_CLASSIC 9660 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9661 return hci_connection->encryption_key_size; 9662 } 9663 #endif 9664 } 9665 return 0; 9666 } 9667 9668 bool gap_authenticated(hci_con_handle_t con_handle){ 9669 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9670 if (hci_connection == NULL) return false; 9671 9672 switch (hci_connection->address_type){ 9673 #ifdef ENABLE_BLE 9674 case BD_ADDR_TYPE_LE_PUBLIC: 9675 case BD_ADDR_TYPE_LE_RANDOM: 9676 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9677 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9678 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9679 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9680 #endif 9681 #ifdef ENABLE_CLASSIC 9682 case BD_ADDR_TYPE_SCO: 9683 case BD_ADDR_TYPE_ACL: 9684 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9685 #endif 9686 default: 9687 return false; 9688 } 9689 } 9690 9691 bool gap_secure_connection(hci_con_handle_t con_handle){ 9692 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9693 if (hci_connection == NULL) return 0; 9694 9695 switch (hci_connection->address_type){ 9696 #ifdef ENABLE_BLE 9697 case BD_ADDR_TYPE_LE_PUBLIC: 9698 case BD_ADDR_TYPE_LE_RANDOM: 9699 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9700 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9701 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9702 return hci_connection->sm_connection.sm_connection_sc; 9703 #endif 9704 #ifdef ENABLE_CLASSIC 9705 case BD_ADDR_TYPE_SCO: 9706 case BD_ADDR_TYPE_ACL: 9707 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9708 #endif 9709 default: 9710 return false; 9711 } 9712 } 9713 9714 bool gap_bonded(hci_con_handle_t con_handle){ 9715 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9716 if (hci_connection == NULL) return 0; 9717 9718 #ifdef ENABLE_CLASSIC 9719 link_key_t link_key; 9720 link_key_type_t link_key_type; 9721 #endif 9722 switch (hci_connection->address_type){ 9723 #ifdef ENABLE_BLE 9724 case BD_ADDR_TYPE_LE_PUBLIC: 9725 case BD_ADDR_TYPE_LE_RANDOM: 9726 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9727 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9728 return hci_connection->sm_connection.sm_le_db_index >= 0; 9729 #endif 9730 #ifdef ENABLE_CLASSIC 9731 case BD_ADDR_TYPE_SCO: 9732 case BD_ADDR_TYPE_ACL: 9733 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9734 #endif 9735 default: 9736 return false; 9737 } 9738 } 9739 9740 #ifdef ENABLE_BLE 9741 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9742 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9743 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9744 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9745 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9746 return sm_conn->sm_connection_authorization_state; 9747 } 9748 #endif 9749 9750 #ifdef ENABLE_CLASSIC 9751 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){ 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 = sniff_min_interval; 9755 conn->sniff_max_interval = sniff_max_interval; 9756 conn->sniff_attempt = sniff_attempt; 9757 conn->sniff_timeout = sniff_timeout; 9758 hci_run(); 9759 return 0; 9760 } 9761 9762 /** 9763 * @brief Exit Sniff mode 9764 * @param con_handle 9765 @ @return 0 if ok 9766 */ 9767 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9768 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9769 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9770 conn->sniff_min_interval = 0xffff; 9771 hci_run(); 9772 return 0; 9773 } 9774 9775 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){ 9776 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9777 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9778 conn->sniff_subrating_max_latency = max_latency; 9779 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9780 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9781 hci_run(); 9782 return ERROR_CODE_SUCCESS; 9783 } 9784 9785 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){ 9786 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9787 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9788 conn->qos_service_type = service_type; 9789 conn->qos_token_rate = token_rate; 9790 conn->qos_peak_bandwidth = peak_bandwidth; 9791 conn->qos_latency = latency; 9792 conn->qos_delay_variation = delay_variation; 9793 hci_run(); 9794 return ERROR_CODE_SUCCESS; 9795 } 9796 9797 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9798 hci_stack->new_page_scan_interval = page_scan_interval; 9799 hci_stack->new_page_scan_window = page_scan_window; 9800 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9801 hci_run(); 9802 } 9803 9804 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9805 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9806 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9807 hci_run(); 9808 } 9809 9810 void gap_set_page_timeout(uint16_t page_timeout){ 9811 hci_stack->page_timeout = page_timeout; 9812 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9813 hci_run(); 9814 } 9815 9816 #endif 9817 9818 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9819 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9820 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9821 if (le_device_db_index >= le_device_db_max_count()) return; 9822 uint8_t offset = le_device_db_index >> 3; 9823 uint8_t mask = 1 << (le_device_db_index & 7); 9824 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9825 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9826 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9827 // note: go back to remove entries, otherwise, a remove + add will skip the add 9828 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9829 } 9830 } 9831 9832 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9833 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9834 if (le_device_db_index >= le_device_db_max_count()) return; 9835 uint8_t offset = le_device_db_index >> 3; 9836 uint8_t mask = 1 << (le_device_db_index & 7); 9837 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9838 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9839 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9840 } 9841 } 9842 9843 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9844 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9845 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9846 } 9847 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9848 // restart le resolving list update 9849 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9850 } 9851 return ERROR_CODE_SUCCESS; 9852 } 9853 9854 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9855 hci_stack->le_privacy_mode = privacy_mode; 9856 } 9857 #endif 9858 9859 #ifdef ENABLE_BLE 9860 #ifdef ENABLE_LE_CENTRAL 9861 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9862 9863 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9864 9865 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9866 // incorrect configuration: 9867 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9868 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9869 btstack_assert(false); 9870 #endif 9871 9872 // check if already in list 9873 btstack_linked_list_iterator_t it; 9874 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9875 while (btstack_linked_list_iterator_has_next(&it)) { 9876 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9877 if (entry->sid != advertising_sid) { 9878 continue; 9879 } 9880 if (entry->address_type != address_type) { 9881 continue; 9882 } 9883 if (memcmp(entry->address, address, 6) != 0) { 9884 continue; 9885 } 9886 // disallow if already scheduled to add 9887 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9888 return ERROR_CODE_COMMAND_DISALLOWED; 9889 } 9890 // still on controller, but scheduled to remove -> re-add 9891 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9892 return ERROR_CODE_SUCCESS; 9893 } 9894 // alloc and add to list 9895 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9896 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9897 entry->sid = advertising_sid; 9898 entry->address_type = address_type; 9899 (void)memcpy(entry->address, address, 6); 9900 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9901 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9902 return ERROR_CODE_SUCCESS; 9903 } 9904 9905 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9906 btstack_linked_list_iterator_t it; 9907 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9908 while (btstack_linked_list_iterator_has_next(&it)){ 9909 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9910 if (entry->sid != advertising_sid) { 9911 continue; 9912 } 9913 if (entry->address_type != address_type) { 9914 continue; 9915 } 9916 if (memcmp(entry->address, address, 6) != 0) { 9917 continue; 9918 } 9919 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9920 // remove from controller if already present 9921 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9922 } else { 9923 // directly remove entry from whitelist 9924 btstack_linked_list_iterator_remove(&it); 9925 btstack_memory_periodic_advertiser_list_entry_free(entry); 9926 } 9927 return ERROR_CODE_SUCCESS; 9928 } 9929 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9930 } 9931 9932 static void hci_periodic_advertiser_list_clear(void){ 9933 btstack_linked_list_iterator_t it; 9934 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9935 while (btstack_linked_list_iterator_has_next(&it)){ 9936 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9937 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9938 // remove from controller if already present 9939 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9940 continue; 9941 } 9942 // directly remove entry from whitelist 9943 btstack_linked_list_iterator_remove(&it); 9944 btstack_memory_periodic_advertiser_list_entry_free(entry); 9945 } 9946 } 9947 9948 uint8_t gap_periodic_advertiser_list_clear(void){ 9949 hci_periodic_advertiser_list_clear(); 9950 hci_run(); 9951 return ERROR_CODE_SUCCESS; 9952 } 9953 9954 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9955 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9956 if (status){ 9957 return status; 9958 } 9959 hci_run(); 9960 return ERROR_CODE_SUCCESS; 9961 } 9962 9963 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9964 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9965 if (status){ 9966 return status; 9967 } 9968 hci_run(); 9969 return ERROR_CODE_SUCCESS; 9970 } 9971 9972 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9973 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9974 // abort if already active 9975 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9976 return ERROR_CODE_COMMAND_DISALLOWED; 9977 } 9978 // store request 9979 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9980 hci_stack->le_periodic_sync_options = options; 9981 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9982 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9983 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9984 hci_stack->le_periodic_sync_skip = skip; 9985 hci_stack->le_periodic_sync_timeout = sync_timeout; 9986 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9987 9988 hci_run(); 9989 return ERROR_CODE_SUCCESS; 9990 } 9991 9992 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9993 // abort if not requested 9994 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9995 return ERROR_CODE_COMMAND_DISALLOWED; 9996 } 9997 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9998 hci_run(); 9999 return ERROR_CODE_SUCCESS; 10000 } 10001 10002 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10003 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10004 return ERROR_CODE_COMMAND_DISALLOWED; 10005 } 10006 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10007 hci_run(); 10008 return ERROR_CODE_SUCCESS; 10009 } 10010 10011 #endif 10012 #endif 10013 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10014 static hci_iso_stream_t * 10015 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10016 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10017 if (iso_stream != NULL){ 10018 iso_stream->iso_type = iso_type; 10019 iso_stream->state = state; 10020 iso_stream->group_id = group_id; 10021 iso_stream->stream_id = stream_id; 10022 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10023 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10024 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10025 } 10026 return iso_stream; 10027 } 10028 10029 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10030 btstack_linked_list_iterator_t it; 10031 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10032 while (btstack_linked_list_iterator_has_next(&it)){ 10033 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10034 if (iso_stream->cis_handle == con_handle ) { 10035 return iso_stream; 10036 } 10037 } 10038 return NULL; 10039 } 10040 10041 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10042 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10043 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10044 btstack_memory_hci_iso_stream_free(iso_stream); 10045 } 10046 10047 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10048 btstack_linked_list_iterator_t it; 10049 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10050 while (btstack_linked_list_iterator_has_next(&it)){ 10051 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10052 if ((iso_stream->group_id == group_id) && 10053 (iso_stream->iso_type == iso_type)){ 10054 btstack_linked_list_iterator_remove(&it); 10055 btstack_memory_hci_iso_stream_free(iso_stream); 10056 } 10057 } 10058 } 10059 10060 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10061 btstack_linked_list_iterator_t it; 10062 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10063 while (btstack_linked_list_iterator_has_next(&it)){ 10064 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10065 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10066 (iso_stream->group_id == group_id)){ 10067 btstack_linked_list_iterator_remove(&it); 10068 btstack_memory_hci_iso_stream_free(iso_stream); 10069 } 10070 } 10071 } 10072 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10073 btstack_linked_list_iterator_t it; 10074 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10075 while (btstack_linked_list_iterator_has_next(&it)){ 10076 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10077 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10078 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10079 } 10080 } 10081 } 10082 10083 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10084 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10085 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10086 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10087 return (sdu_len_offset + 2 + sdu_len) == size; 10088 } 10089 10090 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10091 if (iso_stream == NULL){ 10092 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10093 return; 10094 } 10095 10096 if (hci_stack->iso_packet_handler == NULL) { 10097 return; 10098 } 10099 10100 // parse header 10101 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10102 uint16_t data_total_length = little_endian_read_16(packet, 2); 10103 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10104 10105 // assert packet is complete 10106 if ((data_total_length + 4u) != size){ 10107 return; 10108 } 10109 10110 if ((pb_flag & 0x01) == 0){ 10111 if (pb_flag == 0x02){ 10112 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10113 if (hci_iso_sdu_complete(packet, size)) { 10114 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10115 } 10116 } else { 10117 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10118 if (size > sizeof(iso_stream->reassembly_buffer)){ 10119 return; 10120 } 10121 memcpy(iso_stream->reassembly_buffer, packet, size); 10122 // fix pb_flag 10123 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10124 iso_stream->reassembly_pos = size; 10125 } 10126 } else { 10127 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10128 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10129 if (ts_flag != 0){ 10130 return; 10131 } 10132 // append fragment 10133 if (iso_stream->reassembly_pos == 0){ 10134 return; 10135 } 10136 10137 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10138 // reset reassembly buffer 10139 iso_stream->reassembly_pos = 0; 10140 return; 10141 } 10142 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10143 iso_stream->reassembly_pos += data_total_length; 10144 10145 // deliver if last fragment and SDU complete 10146 if (pb_flag == 0x03){ 10147 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10148 // fix data_total_length 10149 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10150 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10151 } 10152 // reset reassembly buffer 10153 iso_stream->reassembly_pos = 0; 10154 } 10155 } 10156 } 10157 10158 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10159 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10160 uint16_t pos = 0; 10161 event[pos++] = HCI_EVENT_META_GAP; 10162 event[pos++] = 4 + (2 * big->num_bis); 10163 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10164 event[pos++] = status; 10165 event[pos++] = big->big_handle; 10166 event[pos++] = big->num_bis; 10167 uint8_t i; 10168 for (i=0;i<big->num_bis;i++){ 10169 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10170 pos += 2; 10171 } 10172 hci_emit_event(event, pos, 0); 10173 } 10174 10175 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10176 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10177 uint16_t pos = 0; 10178 event[pos++] = HCI_EVENT_META_GAP; 10179 event[pos++] = 4 + (2 * cig->num_cis); 10180 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10181 event[pos++] = status; 10182 event[pos++] = cig->cig_id; 10183 event[pos++] = cig->num_cis; 10184 uint8_t i; 10185 for (i=0;i<cig->num_cis;i++){ 10186 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10187 pos += 2; 10188 } 10189 hci_emit_event(event, pos, 0); 10190 } 10191 10192 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10193 uint16_t pos = 0; 10194 event[pos++] = HCI_EVENT_META_GAP; 10195 event[pos++] = 8; 10196 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10197 event[pos++] = status; 10198 event[pos++] = iso_stream->group_id; 10199 event[pos++] = iso_stream->stream_id; 10200 little_endian_store_16(event, pos, iso_stream->cis_handle); 10201 pos += 2; 10202 little_endian_store_16(event, pos, iso_stream->acl_handle); 10203 pos += 2; 10204 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10205 pos += 2; 10206 event[pos++] = iso_stream->number_of_subevents; 10207 event[pos++] = iso_stream->burst_number_c_to_p; 10208 event[pos++] = iso_stream->burst_number_p_to_c; 10209 event[pos++] = iso_stream->flush_timeout_c_to_p; 10210 event[pos++] = iso_stream->flush_timeout_p_to_c; 10211 return pos; 10212 } 10213 10214 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10215 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10216 // cache data before finalizing struct 10217 uint8_t event [17]; 10218 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10219 btstack_assert(pos <= sizeof(event)); 10220 if (status != ERROR_CODE_SUCCESS){ 10221 hci_iso_stream_finalize(iso_stream); 10222 } 10223 hci_emit_event(event, pos, 0); 10224 } 10225 10226 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10227 uint8_t event [4]; 10228 uint16_t pos = 0; 10229 event[pos++] = HCI_EVENT_META_GAP; 10230 event[pos++] = 2; 10231 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10232 event[pos++] = big->big_handle; 10233 hci_emit_event(event, pos, 0); 10234 } 10235 10236 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10237 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10238 uint16_t pos = 0; 10239 event[pos++] = HCI_EVENT_META_GAP; 10240 event[pos++] = 4; 10241 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10242 event[pos++] = status; 10243 event[pos++] = big_sync->big_handle; 10244 event[pos++] = big_sync->num_bis; 10245 uint8_t i; 10246 for (i=0;i<big_sync->num_bis;i++){ 10247 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10248 pos += 2; 10249 } 10250 hci_emit_event(event, pos, 0); 10251 } 10252 10253 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10254 uint8_t event [4]; 10255 uint16_t pos = 0; 10256 event[pos++] = HCI_EVENT_META_GAP; 10257 event[pos++] = 2; 10258 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10259 event[pos++] = big_handle; 10260 hci_emit_event(event, pos, 0); 10261 } 10262 10263 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10264 uint8_t event[6]; 10265 uint16_t pos = 0; 10266 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10267 event[pos++] = sizeof(event) - 2; 10268 event[pos++] = big->big_handle; 10269 event[pos++] = bis_index; 10270 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10271 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10272 } 10273 10274 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10275 uint8_t event[4]; 10276 uint16_t pos = 0; 10277 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10278 event[pos++] = sizeof(event) - 2; 10279 little_endian_store_16(event, pos, cis_con_handle); 10280 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10281 } 10282 10283 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10284 btstack_linked_list_iterator_t it; 10285 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10286 while (btstack_linked_list_iterator_has_next(&it)){ 10287 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10288 if ( big->big_handle == big_handle ) { 10289 return big; 10290 } 10291 } 10292 return NULL; 10293 } 10294 10295 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10296 btstack_linked_list_iterator_t it; 10297 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10298 while (btstack_linked_list_iterator_has_next(&it)){ 10299 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10300 if ( big_sync->big_handle == big_handle ) { 10301 return big_sync; 10302 } 10303 } 10304 return NULL; 10305 } 10306 10307 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10308 hci_stack->iso_packets_to_queue = num_packets; 10309 } 10310 10311 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10312 btstack_linked_list_iterator_t it; 10313 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10314 while (btstack_linked_list_iterator_has_next(&it)){ 10315 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10316 if ( cig->cig_id == cig_id ) { 10317 return cig; 10318 } 10319 } 10320 return NULL; 10321 } 10322 10323 static void hci_iso_notify_can_send_now(void){ 10324 10325 // BIG 10326 10327 btstack_linked_list_iterator_t it; 10328 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10329 while (btstack_linked_list_iterator_has_next(&it)){ 10330 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10331 // track number completed packet timestamps 10332 if (big->num_completed_timestamp_current_valid){ 10333 big->num_completed_timestamp_current_valid = false; 10334 if (big->num_completed_timestamp_previous_valid){ 10335 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10336 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10337 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10338 big->num_completed_timestamp_previous_ms); 10339 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10340 // to catch up, skip packet on all BIS 10341 uint8_t i; 10342 for (i=0;i<big->num_bis;i++){ 10343 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10344 if (iso_stream){ 10345 iso_stream->num_packets_to_skip++; 10346 } 10347 } 10348 } 10349 } 10350 big->num_completed_timestamp_previous_valid = true; 10351 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10352 } 10353 10354 if (big->can_send_now_requested){ 10355 // check if no outgoing iso packets pending and no can send now have to be emitted 10356 uint8_t i; 10357 bool can_send = true; 10358 uint8_t num_iso_queued_minimum = 0; 10359 for (i=0;i<big->num_bis;i++){ 10360 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10361 if (iso_stream == NULL) continue; 10362 // handle case where individual ISO packet was sent too late: 10363 // for each additionally queued packet, a new one needs to get skipped 10364 if (i==0){ 10365 num_iso_queued_minimum = iso_stream->num_packets_sent; 10366 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10367 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10368 iso_stream->num_packets_to_skip += num_packets_to_skip; 10369 iso_stream->num_packets_sent -= num_packets_to_skip; 10370 } 10371 // check if we can send now 10372 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10373 can_send = false; 10374 break; 10375 } 10376 } 10377 if (can_send){ 10378 // propagate can send now to individual streams 10379 big->can_send_now_requested = false; 10380 for (i=0;i<big->num_bis;i++){ 10381 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10382 iso_stream->emit_ready_to_send = true; 10383 } 10384 } 10385 } 10386 } 10387 10388 if (hci_stack->hci_packet_buffer_reserved) return; 10389 10390 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10391 while (btstack_linked_list_iterator_has_next(&it)){ 10392 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10393 // report bis ready 10394 uint8_t i; 10395 for (i=0;i<big->num_bis;i++){ 10396 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10397 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10398 iso_stream->emit_ready_to_send = false; 10399 hci_emit_bis_can_send_now(big, i); 10400 break; 10401 } 10402 } 10403 } 10404 10405 // CIS 10406 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10407 while (btstack_linked_list_iterator_has_next(&it)) { 10408 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10409 if ((iso_stream->can_send_now_requested) && 10410 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10411 iso_stream->can_send_now_requested = false; 10412 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10413 } 10414 } 10415 } 10416 10417 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10418 // make big handle unique and usuable for big and big sync 10419 if (hci_big_for_handle(big_handle) != NULL){ 10420 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10421 } 10422 if (hci_big_sync_for_handle(big_handle) != NULL){ 10423 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10424 } 10425 if (num_bis == 0){ 10426 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10427 } 10428 if (num_bis > MAX_NR_BIS){ 10429 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10430 } 10431 10432 // reserve ISO Streams 10433 uint8_t i; 10434 uint8_t status = ERROR_CODE_SUCCESS; 10435 for (i=0;i<num_bis;i++){ 10436 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10437 if (iso_stream == NULL) { 10438 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10439 break; 10440 } 10441 } 10442 10443 // free structs on error 10444 if (status != ERROR_CODE_SUCCESS){ 10445 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10446 } 10447 10448 return status; 10449 } 10450 10451 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10452 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10453 if (status != ERROR_CODE_SUCCESS){ 10454 return status; 10455 } 10456 10457 le_audio_big_t * big = storage; 10458 big->big_handle = big_params->big_handle; 10459 big->params = big_params; 10460 big->state = LE_AUDIO_BIG_STATE_CREATE; 10461 big->num_bis = big_params->num_bis; 10462 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10463 10464 hci_run(); 10465 10466 return ERROR_CODE_SUCCESS; 10467 } 10468 10469 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10470 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10471 if (status != ERROR_CODE_SUCCESS){ 10472 return status; 10473 } 10474 10475 le_audio_big_sync_t * big_sync = storage; 10476 big_sync->big_handle = big_sync_params->big_handle; 10477 big_sync->params = big_sync_params; 10478 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10479 big_sync->num_bis = big_sync_params->num_bis; 10480 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10481 10482 hci_run(); 10483 10484 return ERROR_CODE_SUCCESS; 10485 } 10486 10487 uint8_t gap_big_terminate(uint8_t big_handle){ 10488 le_audio_big_t * big = hci_big_for_handle(big_handle); 10489 if (big == NULL){ 10490 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10491 } 10492 switch (big->state){ 10493 case LE_AUDIO_BIG_STATE_CREATE: 10494 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10495 hci_emit_big_terminated(big); 10496 break; 10497 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10498 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10499 break; 10500 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10501 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10502 case LE_AUDIO_BIG_STATE_ACTIVE: 10503 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10504 hci_run(); 10505 break; 10506 default: 10507 return ERROR_CODE_COMMAND_DISALLOWED; 10508 } 10509 return ERROR_CODE_SUCCESS; 10510 } 10511 10512 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10513 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10514 if (big_sync == NULL){ 10515 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10516 } 10517 switch (big_sync->state){ 10518 case LE_AUDIO_BIG_STATE_CREATE: 10519 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10520 hci_emit_big_sync_stopped(big_handle); 10521 break; 10522 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10523 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10524 break; 10525 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10526 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10527 case LE_AUDIO_BIG_STATE_ACTIVE: 10528 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10529 hci_run(); 10530 break; 10531 default: 10532 return ERROR_CODE_COMMAND_DISALLOWED; 10533 } 10534 return ERROR_CODE_SUCCESS; 10535 } 10536 10537 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10538 le_audio_big_t * big = hci_big_for_handle(big_handle); 10539 if (big == NULL){ 10540 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10541 } 10542 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10543 return ERROR_CODE_COMMAND_DISALLOWED; 10544 } 10545 big->can_send_now_requested = true; 10546 hci_iso_notify_can_send_now(); 10547 return ERROR_CODE_SUCCESS; 10548 } 10549 10550 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10551 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10552 if (iso_stream == NULL){ 10553 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10554 } 10555 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10556 return ERROR_CODE_COMMAND_DISALLOWED; 10557 } 10558 iso_stream->can_send_now_requested = true; 10559 hci_iso_notify_can_send_now(); 10560 return ERROR_CODE_SUCCESS; 10561 } 10562 10563 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10564 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10565 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10566 } 10567 if (cig_params->num_cis == 0){ 10568 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10569 } 10570 if (cig_params->num_cis > MAX_NR_CIS){ 10571 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10572 } 10573 10574 // reserve ISO Streams 10575 uint8_t i; 10576 uint8_t status = ERROR_CODE_SUCCESS; 10577 for (i=0;i<cig_params->num_cis;i++){ 10578 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10579 if (iso_stream == NULL) { 10580 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10581 break; 10582 } 10583 } 10584 10585 // free structs on error 10586 if (status != ERROR_CODE_SUCCESS){ 10587 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10588 return status; 10589 } 10590 10591 le_audio_cig_t * cig = storage; 10592 cig->cig_id = cig_params->cig_id; 10593 cig->num_cis = cig_params->num_cis; 10594 cig->params = cig_params; 10595 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10596 for (i=0;i<cig->num_cis;i++){ 10597 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10598 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10599 cig->cis_setup_active[i] = false; 10600 cig->cis_established[i] = false; 10601 } 10602 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10603 10604 hci_run(); 10605 10606 return ERROR_CODE_SUCCESS; 10607 } 10608 10609 uint8_t gap_cig_remove(uint8_t cig_id){ 10610 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10611 if (cig == NULL){ 10612 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10613 } 10614 10615 // close active CIS 10616 uint8_t i; 10617 for (i=0;i<cig->num_cis;i++){ 10618 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10619 if (stream != NULL){ 10620 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10621 } 10622 } 10623 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10624 10625 hci_run(); 10626 10627 return ERROR_CODE_SUCCESS; 10628 } 10629 10630 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10631 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10632 if (cig == NULL){ 10633 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10634 } 10635 10636 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10637 return ERROR_CODE_COMMAND_DISALLOWED; 10638 } 10639 10640 // store ACL Connection Handles 10641 uint8_t i; 10642 for (i=0;i<cig->num_cis;i++){ 10643 // check that all con handles exist and store 10644 hci_con_handle_t cis_handle = cis_con_handles[i]; 10645 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10646 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10647 } 10648 uint8_t j; 10649 bool found = false; 10650 for (j=0;j<cig->num_cis;j++){ 10651 if (cig->cis_con_handles[j] == cis_handle){ 10652 cig->acl_con_handles[j] = acl_con_handles[j]; 10653 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10654 btstack_assert(iso_stream != NULL); 10655 iso_stream->acl_handle = acl_con_handles[j]; 10656 found = true; 10657 break; 10658 } 10659 } 10660 if (!found){ 10661 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10662 } 10663 } 10664 10665 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10666 hci_run(); 10667 10668 return ERROR_CODE_SUCCESS; 10669 } 10670 10671 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10672 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10673 if (iso_stream == NULL){ 10674 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10675 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10676 } 10677 10678 // set next state and continue 10679 iso_stream->state = state; 10680 hci_run(); 10681 return ERROR_CODE_SUCCESS; 10682 } 10683 10684 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10685 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10686 } 10687 10688 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10689 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10690 } 10691 10692 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10693 10694 // GAP Privacy - notify clients before random address update 10695 10696 static bool gap_privacy_client_all_ready(void){ 10697 // check if all ready 10698 btstack_linked_list_iterator_t it; 10699 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10700 while (btstack_linked_list_iterator_has_next(&it)) { 10701 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10702 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10703 return false; 10704 } 10705 } 10706 return true; 10707 } 10708 10709 static void gap_privacy_clients_handle_ready(void){ 10710 // clear 'ready' 10711 btstack_linked_list_iterator_t it; 10712 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10713 while (btstack_linked_list_iterator_has_next(&it)) { 10714 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10715 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10716 } 10717 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10718 hci_run(); 10719 } 10720 10721 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10722 btstack_linked_list_iterator_t it; 10723 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10724 while (btstack_linked_list_iterator_has_next(&it)) { 10725 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10726 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10727 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10728 (*client->callback)(client, new_random_address); 10729 } 10730 } 10731 if (gap_privacy_client_all_ready()){ 10732 gap_privacy_clients_handle_ready(); 10733 } 10734 } 10735 10736 void gap_privacy_client_register(gap_privacy_client_t * client){ 10737 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10738 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10739 } 10740 10741 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10742 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10743 if (gap_privacy_client_all_ready()){ 10744 gap_privacy_clients_handle_ready(); 10745 } 10746 } 10747 10748 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10749 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10750 } 10751 10752 #endif /* ENABLE_BLE */ 10753 10754 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10755 void hci_setup_test_connections_fuzz(void){ 10756 hci_connection_t * conn; 10757 10758 // default address: 66:55:44:33:00:01 10759 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10760 10761 // setup Controller info 10762 hci_stack->num_cmd_packets = 255; 10763 hci_stack->acl_packets_total_num = 255; 10764 10765 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10766 addr[5] = 0x01; 10767 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10768 conn->con_handle = addr[5]; 10769 conn->state = RECEIVED_CONNECTION_REQUEST; 10770 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10771 10772 // setup incoming Classic SCO connection with con handle 0x0002 10773 addr[5] = 0x02; 10774 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10775 conn->con_handle = addr[5]; 10776 conn->state = RECEIVED_CONNECTION_REQUEST; 10777 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10778 10779 // setup ready Classic ACL connection with con handle 0x0003 10780 addr[5] = 0x03; 10781 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10782 conn->con_handle = addr[5]; 10783 conn->state = OPEN; 10784 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10785 10786 // setup ready Classic SCO connection with con handle 0x0004 10787 addr[5] = 0x04; 10788 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10789 conn->con_handle = addr[5]; 10790 conn->state = OPEN; 10791 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10792 10793 // setup ready LE ACL connection with con handle 0x005 and public address 10794 addr[5] = 0x05; 10795 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10796 conn->con_handle = addr[5]; 10797 conn->state = OPEN; 10798 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10799 conn->sm_connection.sm_connection_encrypted = 1; 10800 } 10801 10802 void hci_free_connections_fuzz(void){ 10803 btstack_linked_list_iterator_t it; 10804 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10805 while (btstack_linked_list_iterator_has_next(&it)){ 10806 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10807 btstack_linked_list_iterator_remove(&it); 10808 btstack_memory_hci_connection_free(con); 10809 } 10810 } 10811 void hci_simulate_working_fuzz(void){ 10812 hci_stack->le_scanning_param_update = false; 10813 hci_init_done(); 10814 hci_stack->num_cmd_packets = 255; 10815 } 10816 #endif 10817