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_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 static bool hci_run_general_gap_le(void); 227 static void gap_privacy_clients_handle_ready(void); 228 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 229 #ifdef ENABLE_LE_CENTRAL 230 // called from test/ble_client/advertising_data_parser.c 231 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 232 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 233 static hci_connection_t * gap_get_outgoing_le_connection(void); 234 static void hci_le_scan_stop(void); 235 #endif 236 #ifdef ENABLE_LE_PERIPHERAL 237 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 238 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 239 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 240 #endif /* ENABLE_LE_PERIPHERAL */ 241 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 242 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); 243 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 244 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 245 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 246 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 247 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 248 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 249 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 250 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 251 static void hci_iso_notify_can_send_now(void); 252 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 253 static void hci_emit_big_terminated(const le_audio_big_t * big); 254 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 255 static void hci_emit_big_sync_stopped(uint8_t big_handle); 256 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 257 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 258 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 259 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 260 #endif /* ENABLE_BLE */ 261 262 // the STACK is here 263 #ifndef HAVE_MALLOC 264 static hci_stack_t hci_stack_static; 265 #endif 266 static hci_stack_t * hci_stack = NULL; 267 268 #ifdef ENABLE_CLASSIC 269 // default name 270 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 271 272 // test helper 273 static uint8_t disable_l2cap_timeouts = 0; 274 #endif 275 276 // reset connection state on create and on reconnect 277 // don't overwrite addr, con handle, role 278 static void hci_connection_init(hci_connection_t * conn){ 279 conn->authentication_flags = AUTH_FLAG_NONE; 280 conn->bonding_flags = 0; 281 conn->requested_security_level = LEVEL_0; 282 conn->link_key_type = INVALID_LINK_KEY; 283 #ifdef ENABLE_CLASSIC 284 conn->request_role = HCI_ROLE_INVALID; 285 conn->sniff_subrating_max_latency = 0xffff; 286 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 287 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 288 btstack_run_loop_set_timer_context(&conn->timeout, conn); 289 hci_connection_timestamp(conn); 290 #endif 291 conn->acl_recombination_length = 0; 292 conn->acl_recombination_pos = 0; 293 conn->num_packets_sent = 0; 294 295 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 296 #ifdef ENABLE_BLE 297 conn->le_phy_update_all_phys = 0xff; 298 #endif 299 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 300 conn->le_max_tx_octets = 27; 301 #endif 302 #ifdef ENABLE_CLASSIC_PAIRING_OOB 303 conn->classic_oob_c_192 = NULL; 304 conn->classic_oob_r_192 = NULL; 305 conn->classic_oob_c_256 = NULL; 306 conn->classic_oob_r_256 = NULL; 307 #endif 308 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 309 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 310 conn->le_past_advertising_handle = 0xff; 311 #endif 312 } 313 314 /** 315 * create connection for given address 316 * 317 * @return connection OR NULL, if no memory left 318 */ 319 static hci_connection_t * 320 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 321 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 322 323 hci_connection_t * conn = btstack_memory_hci_connection_get(); 324 if (!conn) return NULL; 325 hci_connection_init(conn); 326 327 bd_addr_copy(conn->address, addr); 328 conn->address_type = addr_type; 329 conn->con_handle = HCI_CON_HANDLE_INVALID; 330 conn->role = role; 331 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 332 333 return conn; 334 } 335 336 337 /** 338 * get le connection parameter range 339 * 340 * @return le connection parameter range struct 341 */ 342 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 343 *range = hci_stack->le_connection_parameter_range; 344 } 345 346 /** 347 * set le connection parameter range 348 * 349 */ 350 351 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 352 hci_stack->le_connection_parameter_range = *range; 353 } 354 355 /** 356 * @brief Test if connection parameters are inside in existing rage 357 * @param conn_interval_min (unit: 1.25ms) 358 * @param conn_interval_max (unit: 1.25ms) 359 * @param conn_latency 360 * @param supervision_timeout (unit: 10ms) 361 * @return 1 if included 362 */ 363 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){ 364 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 365 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 366 367 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 368 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 369 370 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 371 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 372 373 return 1; 374 } 375 376 /** 377 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 378 * @note: default: 1 379 * @param max_peripheral_connections 380 */ 381 #ifdef ENABLE_LE_PERIPHERAL 382 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 383 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 384 } 385 #endif 386 387 /** 388 * get hci connections iterator 389 * 390 * @return hci connections iterator 391 */ 392 393 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 394 btstack_linked_list_iterator_init(it, &hci_stack->connections); 395 } 396 397 /** 398 * get connection for a given handle 399 * 400 * @return connection OR NULL, if not found 401 */ 402 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 403 btstack_linked_list_iterator_t it; 404 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 405 while (btstack_linked_list_iterator_has_next(&it)){ 406 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 407 if ( item->con_handle == con_handle ) { 408 return item; 409 } 410 } 411 return NULL; 412 } 413 414 /** 415 * get connection for given address 416 * 417 * @return connection OR NULL, if not found 418 */ 419 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 420 btstack_linked_list_iterator_t it; 421 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 422 while (btstack_linked_list_iterator_has_next(&it)){ 423 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 424 if (connection->address_type != addr_type) continue; 425 if (memcmp(addr, connection->address, 6) != 0) continue; 426 return connection; 427 } 428 return NULL; 429 } 430 431 #ifdef ENABLE_CLASSIC 432 433 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 434 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 435 } 436 437 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 438 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 439 } 440 441 #ifdef ENABLE_SCO_OVER_HCI 442 static int hci_number_sco_connections(void){ 443 int connections = 0; 444 btstack_linked_list_iterator_t it; 445 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 446 while (btstack_linked_list_iterator_has_next(&it)){ 447 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 448 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 449 connections++; 450 } 451 return connections; 452 } 453 #endif 454 455 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 456 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 457 #ifdef HAVE_EMBEDDED_TICK 458 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 459 // connections might be timed out 460 hci_emit_l2cap_check_timeout(connection); 461 } 462 #else 463 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 464 // connections might be timed out 465 hci_emit_l2cap_check_timeout(connection); 466 } 467 #endif 468 } 469 470 static void hci_connection_timestamp(hci_connection_t *connection){ 471 #ifdef HAVE_EMBEDDED_TICK 472 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 473 #else 474 connection->timestamp = btstack_run_loop_get_time_ms(); 475 #endif 476 } 477 478 /** 479 * add authentication flags and reset timer 480 * @note: assumes classic connection 481 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 482 */ 483 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 484 bd_addr_t addr; 485 reverse_bd_addr(bd_addr, addr); 486 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 487 if (conn) { 488 connectionSetAuthenticationFlags(conn, flags); 489 hci_connection_timestamp(conn); 490 } 491 } 492 493 static bool hci_pairing_active(hci_connection_t * hci_connection){ 494 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 495 } 496 497 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 498 if (hci_pairing_active(hci_connection)) return; 499 if (ssp){ 500 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 501 } else { 502 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 503 } 504 // if we are initiator, we have sent an HCI Authenticate Request 505 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 506 507 // if we are responder, use minimal service security level as required level 508 if (!initiator){ 509 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); 510 } 511 512 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 513 514 uint8_t event[12]; 515 event[0] = GAP_EVENT_PAIRING_STARTED; 516 event[1] = 10; 517 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 518 reverse_bd_addr(hci_connection->address, &event[4]); 519 event[10] = (uint8_t) ssp; 520 event[11] = (uint8_t) initiator; 521 hci_emit_event(event, sizeof(event), 1); 522 } 523 524 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 525 hci_connection->requested_security_level = LEVEL_0; 526 if (!hci_pairing_active(hci_connection)) return; 527 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 528 #ifdef ENABLE_CLASSIC_PAIRING_OOB 529 hci_connection->classic_oob_c_192 = NULL; 530 hci_connection->classic_oob_r_192 = NULL; 531 hci_connection->classic_oob_c_256 = NULL; 532 hci_connection->classic_oob_r_256 = NULL; 533 #endif 534 log_info("pairing complete, status %02x", status); 535 536 uint8_t event[11]; 537 event[0] = GAP_EVENT_PAIRING_COMPLETE; 538 event[1] = 9; 539 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 540 reverse_bd_addr(hci_connection->address, &event[4]); 541 event[10] = status; 542 hci_emit_event(event, sizeof(event), 1); 543 544 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 545 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 546 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 547 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 548 hci_connection->bonding_status = status; 549 } 550 } 551 552 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 553 hci_connection_t * conn = hci_connection_for_handle(handle); 554 if (!conn) return false; 555 return hci_pairing_active(conn); 556 } 557 558 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 559 if (!hci_stack->link_key_db) return; 560 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 561 hci_stack->link_key_db->delete_link_key(addr); 562 } 563 564 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 565 if (!hci_stack->link_key_db) return; 566 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 567 hci_stack->link_key_db->put_link_key(addr, link_key, type); 568 } 569 570 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 571 if (!hci_stack->link_key_db) return false; 572 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 573 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 574 return result; 575 } 576 577 void gap_delete_all_link_keys(void){ 578 bd_addr_t addr; 579 link_key_t link_key; 580 link_key_type_t type; 581 btstack_link_key_iterator_t it; 582 int ok = gap_link_key_iterator_init(&it); 583 if (!ok) { 584 log_error("could not initialize iterator"); 585 return; 586 } 587 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 588 gap_drop_link_key_for_bd_addr(addr); 589 } 590 gap_link_key_iterator_done(&it); 591 } 592 593 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 594 if (!hci_stack->link_key_db) return 0; 595 if (!hci_stack->link_key_db->iterator_init) return 0; 596 return hci_stack->link_key_db->iterator_init(it); 597 } 598 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){ 599 if (!hci_stack->link_key_db) return 0; 600 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 601 } 602 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 603 if (!hci_stack->link_key_db) return; 604 hci_stack->link_key_db->iterator_done(it); 605 } 606 #endif 607 608 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 609 switch (address_type){ 610 case BD_ADDR_TYPE_LE_PUBLIC: 611 case BD_ADDR_TYPE_LE_RANDOM: 612 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 613 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 614 return true; 615 default: 616 return false; 617 } 618 } 619 620 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 621 switch (address_type){ 622 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 623 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 624 return true; 625 default: 626 return false; 627 } 628 } 629 630 static bool hci_is_le_connection(hci_connection_t * connection){ 631 return hci_is_le_connection_type(connection->address_type); 632 } 633 634 /** 635 * count connections 636 */ 637 static int nr_hci_connections(void){ 638 int count = 0; 639 btstack_linked_item_t *it; 640 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 641 count++; 642 } 643 return count; 644 } 645 646 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 647 648 unsigned int num_packets_sent_classic = 0; 649 unsigned int num_packets_sent_le = 0; 650 651 btstack_linked_item_t *it; 652 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 653 hci_connection_t * connection = (hci_connection_t *) it; 654 if (hci_is_le_connection(connection)){ 655 num_packets_sent_le += connection->num_packets_sent; 656 } 657 if (connection->address_type == BD_ADDR_TYPE_ACL){ 658 num_packets_sent_classic += connection->num_packets_sent; 659 } 660 } 661 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 662 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 663 int free_slots_le = 0; 664 665 if (free_slots_classic < 0){ 666 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); 667 return 0; 668 } 669 670 if (hci_stack->le_acl_packets_total_num){ 671 // if we have LE slots, they are used 672 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 673 if (free_slots_le < 0){ 674 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); 675 return 0; 676 } 677 } else { 678 // otherwise, classic slots are used for LE, too 679 free_slots_classic -= num_packets_sent_le; 680 if (free_slots_classic < 0){ 681 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); 682 return 0; 683 } 684 } 685 686 switch (address_type){ 687 case BD_ADDR_TYPE_UNKNOWN: 688 log_error("hci_number_free_acl_slots: unknown address type"); 689 return 0; 690 691 case BD_ADDR_TYPE_ACL: 692 return (uint16_t) free_slots_classic; 693 694 default: 695 if (hci_stack->le_acl_packets_total_num > 0){ 696 return (uint16_t) free_slots_le; 697 } 698 return (uint16_t) free_slots_classic; 699 } 700 } 701 702 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 703 // get connection type 704 hci_connection_t * connection = hci_connection_for_handle(con_handle); 705 if (!connection){ 706 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 707 return 0; 708 } 709 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 710 } 711 712 #ifdef ENABLE_CLASSIC 713 static int hci_number_free_sco_slots(void){ 714 unsigned int num_sco_packets_sent = 0; 715 btstack_linked_item_t *it; 716 if (hci_stack->synchronous_flow_control_enabled){ 717 // explicit flow control 718 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 719 hci_connection_t * connection = (hci_connection_t *) it; 720 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 721 num_sco_packets_sent += connection->num_packets_sent; 722 } 723 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 724 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 725 return 0; 726 } 727 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 728 } else { 729 // implicit flow control 730 int num_ready = 0; 731 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 732 hci_connection_t * connection = (hci_connection_t *) it; 733 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 734 if (connection->sco_tx_ready == 0) continue; 735 num_ready++; 736 } 737 return num_ready; 738 } 739 } 740 #endif 741 742 // only used to send HCI Host Number Completed Packets 743 static int hci_can_send_comand_packet_transport(void){ 744 if (hci_stack->hci_packet_buffer_reserved) return 0; 745 746 // check for async hci transport implementations 747 if (hci_stack->hci_transport->can_send_packet_now){ 748 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 749 return 0; 750 } 751 } 752 return 1; 753 } 754 755 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 756 bool hci_can_send_command_packet_now(void){ 757 if (hci_can_send_comand_packet_transport() == 0) return false; 758 return hci_stack->num_cmd_packets > 0u; 759 } 760 761 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 762 // check for async hci transport implementations 763 if (!hci_stack->hci_transport->can_send_packet_now) return true; 764 return hci_stack->hci_transport->can_send_packet_now(packet_type); 765 } 766 767 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 768 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 769 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 770 } 771 772 bool hci_can_send_acl_le_packet_now(void){ 773 if (hci_stack->hci_packet_buffer_reserved) return false; 774 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 775 } 776 777 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 778 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 779 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 780 } 781 782 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 783 if (hci_stack->hci_packet_buffer_reserved) return false; 784 return hci_can_send_prepared_acl_packet_now(con_handle); 785 } 786 787 #ifdef ENABLE_CLASSIC 788 bool hci_can_send_acl_classic_packet_now(void){ 789 if (hci_stack->hci_packet_buffer_reserved) return false; 790 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 791 } 792 793 bool hci_can_send_prepared_sco_packet_now(void){ 794 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 795 if (hci_have_usb_transport()){ 796 return hci_stack->sco_can_send_now; 797 } else { 798 return hci_number_free_sco_slots() > 0; 799 } 800 } 801 802 bool hci_can_send_sco_packet_now(void){ 803 if (hci_stack->hci_packet_buffer_reserved) return false; 804 return hci_can_send_prepared_sco_packet_now(); 805 } 806 807 void hci_request_sco_can_send_now_event(void){ 808 hci_stack->sco_waiting_for_can_send_now = 1; 809 hci_notify_if_sco_can_send_now(); 810 } 811 #endif 812 813 // used for internal checks in l2cap.c 814 bool hci_is_packet_buffer_reserved(void){ 815 return hci_stack->hci_packet_buffer_reserved; 816 } 817 818 // reserves outgoing packet buffer. 819 // @return 1 if successful 820 bool hci_reserve_packet_buffer(void){ 821 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 822 hci_stack->hci_packet_buffer_reserved = true; 823 return true; 824 } 825 826 void hci_release_packet_buffer(void){ 827 btstack_assert(hci_stack->hci_packet_buffer_reserved); 828 hci_stack->hci_packet_buffer_reserved = false; 829 } 830 831 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 832 static int hci_transport_synchronous(void){ 833 return hci_stack->hci_transport->can_send_packet_now == NULL; 834 } 835 836 // used for debugging 837 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 838 static void hci_controller_dump_packets(void){ 839 // format: "{handle:04x}:{count:02d} " 840 char summaries[3][7 * 8 + 1]; 841 uint16_t totals[3]; 842 uint8_t index; 843 for (index = 0 ; index < 3 ; index++){ 844 summaries[index][0] = 0; 845 totals[index] = 0; 846 } 847 btstack_linked_item_t *it; 848 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 849 hci_connection_t * connection = (hci_connection_t *) it; 850 switch (connection->address_type){ 851 case BD_ADDR_TYPE_ACL: 852 index = 0; 853 break; 854 case BD_ADDR_TYPE_SCO: 855 index = 2; 856 break; 857 default: 858 index = 1; 859 break; 860 } 861 totals[index] += connection->num_packets_sent; 862 char item_text[10]; 863 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 864 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 865 } 866 for (index = 0 ; index < 3 ; index++){ 867 if (summaries[index][0] == 0){ 868 summaries[index][0] = '-'; 869 summaries[index][1] = 0; 870 } 871 } 872 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]); 873 } 874 #endif 875 876 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 877 878 // 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); 879 880 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 881 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 882 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 883 max_acl_data_packet_length = hci_stack->le_data_packets_length; 884 } 885 886 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 887 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 888 max_acl_data_packet_length = connection->le_max_tx_octets; 889 } 890 #endif 891 892 log_debug("hci_send_acl_packet_fragments entered"); 893 894 uint8_t status = ERROR_CODE_SUCCESS; 895 // multiple packets could be send on a synchronous HCI transport 896 while (true){ 897 898 log_debug("hci_send_acl_packet_fragments loop entered"); 899 900 // get current data 901 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 902 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 903 bool more_fragments = false; 904 905 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 906 if (current_acl_data_packet_length > max_acl_data_packet_length){ 907 more_fragments = true; 908 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 909 } 910 911 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 912 if (acl_header_pos > 0u){ 913 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 914 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 915 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 916 } 917 918 // update header len 919 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 920 921 // count packet 922 connection->num_packets_sent++; 923 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 924 925 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 926 if (more_fragments){ 927 // update start of next fragment to send 928 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 929 } else { 930 // done 931 hci_stack->acl_fragmentation_pos = 0; 932 hci_stack->acl_fragmentation_total_size = 0; 933 } 934 935 // send packet 936 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 937 const int size = current_acl_data_packet_length + 4; 938 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 939 hci_stack->acl_fragmentation_tx_active = 1; 940 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 941 if (err != 0){ 942 // no error from HCI Transport expected 943 status = ERROR_CODE_HARDWARE_FAILURE; 944 } 945 946 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 947 hci_controller_dump_packets(); 948 #endif 949 950 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 951 952 // done yet? 953 if (!more_fragments) break; 954 955 // can send more? 956 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 957 } 958 959 log_debug("hci_send_acl_packet_fragments loop over"); 960 961 // release buffer now for synchronous transport 962 if (hci_transport_synchronous()){ 963 hci_stack->acl_fragmentation_tx_active = 0; 964 hci_release_packet_buffer(); 965 hci_emit_transport_packet_sent(); 966 } 967 968 return status; 969 } 970 971 // pre: caller has reserved the packet buffer 972 uint8_t hci_send_acl_packet_buffer(int size){ 973 btstack_assert(hci_stack->hci_packet_buffer_reserved); 974 975 uint8_t * packet = hci_stack->hci_packet_buffer; 976 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 977 978 hci_connection_t *connection = hci_connection_for_handle( con_handle); 979 if (!connection) { 980 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 981 hci_release_packet_buffer(); 982 hci_emit_transport_packet_sent(); 983 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 984 } 985 986 // check for free places on Bluetooth module 987 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 988 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 989 hci_release_packet_buffer(); 990 hci_emit_transport_packet_sent(); 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 hci_emit_transport_packet_sent(); 1023 return BTSTACK_ACL_BUFFERS_FULL; 1024 } 1025 1026 // track send packet in connection struct 1027 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1028 if (!connection) { 1029 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1030 hci_release_packet_buffer(); 1031 hci_emit_transport_packet_sent(); 1032 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1033 } 1034 1035 if (hci_have_usb_transport()){ 1036 // token used 1037 hci_stack->sco_can_send_now = false; 1038 } else { 1039 if (hci_stack->synchronous_flow_control_enabled){ 1040 connection->num_packets_sent++; 1041 } else { 1042 connection->sco_tx_ready--; 1043 } 1044 } 1045 } 1046 1047 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1048 1049 #ifdef HAVE_SCO_TRANSPORT 1050 hci_stack->sco_transport->send_packet(packet, size); 1051 hci_release_packet_buffer(); 1052 hci_emit_transport_packet_sent(); 1053 1054 return 0; 1055 #else 1056 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1057 if (hci_transport_synchronous()){ 1058 hci_release_packet_buffer(); 1059 hci_emit_transport_packet_sent(); 1060 } 1061 1062 if (err != 0){ 1063 return ERROR_CODE_HARDWARE_FAILURE; 1064 } 1065 return ERROR_CODE_SUCCESS; 1066 #endif 1067 } 1068 #endif 1069 1070 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1071 static uint8_t hci_send_iso_packet_fragments(void){ 1072 1073 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1074 uint8_t status = ERROR_CODE_SUCCESS; 1075 // multiple packets could be send on a synchronous HCI transport 1076 while (true){ 1077 1078 // get current data 1079 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1080 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1081 bool more_fragments = false; 1082 1083 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1084 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1085 more_fragments = true; 1086 current_iso_data_packet_length = max_iso_data_packet_length; 1087 } 1088 1089 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1090 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1091 uint8_t pb_flags; 1092 if (iso_header_pos == 0u){ 1093 // first fragment, keep TS field 1094 pb_flags = more_fragments ? 0x00 : 0x02; 1095 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1096 } else { 1097 // later fragment, drop TS field 1098 pb_flags = more_fragments ? 0x01 : 0x03; 1099 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1100 } 1101 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1102 1103 // update header len 1104 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1105 1106 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1107 if (more_fragments){ 1108 // update start of next fragment to send 1109 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1110 } else { 1111 // done 1112 hci_stack->iso_fragmentation_pos = 0; 1113 hci_stack->iso_fragmentation_total_size = 0; 1114 } 1115 1116 // send packet 1117 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1118 const int size = current_iso_data_packet_length + 4; 1119 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1120 hci_stack->iso_fragmentation_tx_active = true; 1121 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1122 if (err != 0){ 1123 // no error from HCI Transport expected 1124 status = ERROR_CODE_HARDWARE_FAILURE; 1125 } 1126 1127 // done yet? 1128 if (!more_fragments) break; 1129 1130 // can send more? 1131 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1132 } 1133 1134 // release buffer now for synchronous transport 1135 if (hci_transport_synchronous()){ 1136 hci_stack->iso_fragmentation_tx_active = false; 1137 hci_release_packet_buffer(); 1138 hci_emit_transport_packet_sent(); 1139 } 1140 1141 return status; 1142 } 1143 1144 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1145 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1146 1147 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1148 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1149 if (iso_stream == NULL){ 1150 hci_release_packet_buffer(); 1151 hci_iso_notify_can_send_now(); 1152 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1153 } 1154 1155 // TODO: check for space on controller 1156 1157 // skip iso packets if needed 1158 if (iso_stream->num_packets_to_skip > 0){ 1159 iso_stream->num_packets_to_skip--; 1160 // pretend it was processed and trigger next one 1161 hci_release_packet_buffer(); 1162 hci_iso_notify_can_send_now(); 1163 return ERROR_CODE_SUCCESS; 1164 } 1165 1166 // track outgoing packet sent 1167 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1168 iso_stream->num_packets_sent++; 1169 1170 // setup data 1171 hci_stack->iso_fragmentation_total_size = size; 1172 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1173 1174 return hci_send_iso_packet_fragments(); 1175 } 1176 #endif 1177 1178 static void acl_handler(uint8_t *packet, uint16_t size){ 1179 1180 // get info 1181 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1182 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1183 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1184 uint16_t acl_length = READ_ACL_LENGTH(packet); 1185 1186 // ignore non-registered handle 1187 if (!conn){ 1188 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1189 return; 1190 } 1191 1192 // assert packet is complete 1193 if ((acl_length + 4u) != size){ 1194 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1195 return; 1196 } 1197 1198 #ifdef ENABLE_CLASSIC 1199 // update idle timestamp 1200 hci_connection_timestamp(conn); 1201 #endif 1202 1203 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1204 hci_stack->host_completed_packets = 1; 1205 conn->num_packets_completed++; 1206 #endif 1207 1208 // handle different packet types 1209 switch (acl_flags & 0x03u) { 1210 1211 case 0x01: // continuation fragment 1212 1213 // sanity checks 1214 if (conn->acl_recombination_pos == 0u) { 1215 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1216 return; 1217 } 1218 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1219 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1220 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1221 conn->acl_recombination_pos = 0; 1222 return; 1223 } 1224 1225 // append fragment payload (header already stored) 1226 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1227 &packet[4], acl_length); 1228 conn->acl_recombination_pos += acl_length; 1229 1230 // forward complete L2CAP packet if complete. 1231 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1232 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1233 // reset recombination buffer 1234 conn->acl_recombination_length = 0; 1235 conn->acl_recombination_pos = 0; 1236 } 1237 break; 1238 1239 case 0x02: { // first fragment 1240 1241 // sanity check 1242 if (conn->acl_recombination_pos) { 1243 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1244 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1245 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1246 } 1247 conn->acl_recombination_pos = 0; 1248 } 1249 1250 // peek into L2CAP packet! 1251 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1252 1253 // compare fragment size to L2CAP packet size 1254 if (acl_length >= (l2cap_length + 4u)){ 1255 // forward fragment as L2CAP packet 1256 hci_emit_acl_packet(packet, acl_length + 4u); 1257 } else { 1258 1259 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1260 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1261 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1262 return; 1263 } 1264 1265 // store first fragment and tweak acl length for complete package 1266 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1267 packet, acl_length + 4u); 1268 conn->acl_recombination_pos = acl_length + 4u; 1269 conn->acl_recombination_length = l2cap_length; 1270 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1271 } 1272 break; 1273 1274 } 1275 default: 1276 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1277 return; 1278 } 1279 1280 // execute main loop 1281 hci_run(); 1282 } 1283 1284 static void hci_connection_stop_timer(hci_connection_t * conn){ 1285 btstack_run_loop_remove_timer(&conn->timeout); 1286 #ifdef ENABLE_CLASSIC 1287 btstack_run_loop_remove_timer(&conn->timeout_sco); 1288 #endif 1289 } 1290 1291 static void hci_shutdown_connection(hci_connection_t *conn){ 1292 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1293 1294 #ifdef ENABLE_CLASSIC 1295 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1296 bd_addr_type_t addr_type = conn->address_type; 1297 #endif 1298 #ifdef HAVE_SCO_TRANSPORT 1299 hci_con_handle_t con_handle = conn->con_handle; 1300 #endif 1301 #endif 1302 1303 hci_connection_stop_timer(conn); 1304 1305 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1306 btstack_memory_hci_connection_free( conn ); 1307 1308 // now it's gone 1309 hci_emit_nr_connections_changed(); 1310 1311 #ifdef ENABLE_CLASSIC 1312 #ifdef ENABLE_SCO_OVER_HCI 1313 // update SCO 1314 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1315 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1316 } 1317 #endif 1318 #ifdef HAVE_SCO_TRANSPORT 1319 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1320 hci_stack->sco_transport->close(con_handle); 1321 } 1322 #endif 1323 #endif 1324 } 1325 1326 #ifdef ENABLE_CLASSIC 1327 1328 static const uint16_t hci_acl_packet_type_sizes[] = { 1329 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1330 HCI_ACL_DH1_SIZE, 0, 0, 0, 1331 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1332 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1333 }; 1334 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1335 0, // 3 slot packets 1336 1, // 5 slot packets 1337 25, // EDR 2 mpbs 1338 26, // EDR 3 mbps 1339 39, // 3 slot EDR packts 1340 40, // 5 slot EDR packet 1341 }; 1342 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1343 0x0f00, // 3 slot packets 1344 0xf000, // 5 slot packets 1345 0x1102, // EDR 2 mpbs 1346 0x2204, // EDR 3 mbps 1347 0x0300, // 3 slot EDR packts 1348 0x3000, // 5 slot EDR packet 1349 }; 1350 1351 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1352 // enable packet types based on size 1353 uint16_t packet_types = 0; 1354 unsigned int i; 1355 for (i=0;i<16;i++){ 1356 if (hci_acl_packet_type_sizes[i] == 0) continue; 1357 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1358 packet_types |= 1 << i; 1359 } 1360 } 1361 // disable packet types due to missing local supported features 1362 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1363 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1364 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1365 if (feature_set) continue; 1366 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1367 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1368 } 1369 return packet_types; 1370 } 1371 1372 uint16_t hci_usable_acl_packet_types(void){ 1373 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1374 // flip bits for "may not be used" 1375 return active_packet_types ^ 0x3306; 1376 } 1377 1378 void hci_enable_acl_packet_types(uint16_t packet_types){ 1379 hci_stack->enabled_packet_types_acl = packet_types; 1380 } 1381 1382 static const struct { 1383 uint8_t feature_index; 1384 uint16_t feature_packet_mask; 1385 } hci_sco_packet_type_feature_requirements[] = { 1386 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1387 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1388 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1389 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1390 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1391 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1392 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1393 }; 1394 1395 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1396 static const struct { 1397 uint16_t type; 1398 uint16_t payload_length; 1399 } hci_sco_packet_type_to_payload_length[] = { 1400 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1401 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1402 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1403 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1404 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1405 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1406 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1407 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1408 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1409 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1410 }; 1411 1412 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1413 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1414 unsigned int i; 1415 // disable packet types due to missing local supported features 1416 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1417 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1418 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1419 if (feature_set) continue; 1420 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1421 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1422 } 1423 return packet_types; 1424 } 1425 1426 uint16_t hci_usable_sco_packet_types(void){ 1427 return hci_stack->usable_packet_types_sco; 1428 } 1429 1430 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1431 uint8_t i; 1432 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1433 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1434 return hci_sco_packet_type_to_payload_length[i].payload_length; 1435 } 1436 } 1437 return 0; 1438 } 1439 1440 #endif 1441 1442 uint8_t* hci_get_outgoing_packet_buffer(void){ 1443 // hci packet buffer is >= acl data packet length 1444 return hci_stack->hci_packet_buffer; 1445 } 1446 1447 uint16_t hci_max_acl_data_packet_length(void){ 1448 return hci_stack->acl_data_packet_length; 1449 } 1450 1451 #ifdef ENABLE_CLASSIC 1452 bool hci_extended_sco_link_supported(void){ 1453 // No. 31, byte 3, bit 7 1454 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1455 } 1456 #endif 1457 1458 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1459 // No. 54, byte 6, bit 6 1460 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1461 } 1462 1463 #ifdef ENABLE_CLASSIC 1464 static bool gap_ssp_supported(void){ 1465 // No. 51, byte 6, bit 3 1466 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1467 } 1468 #endif 1469 1470 bool hci_classic_supported(void){ 1471 #ifdef ENABLE_CLASSIC 1472 // No. 37, byte 4, bit 5, = No BR/EDR Support 1473 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1474 #else 1475 return false; 1476 #endif 1477 } 1478 1479 bool hci_le_supported(void){ 1480 #ifdef ENABLE_BLE 1481 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1482 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1483 #else 1484 return false; 1485 #endif 1486 } 1487 1488 static bool hci_command_supported(uint8_t command_index){ 1489 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1490 } 1491 1492 #ifdef ENABLE_BLE 1493 1494 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1495 bool hci_le_extended_advertising_supported(void){ 1496 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1497 } 1498 #endif 1499 1500 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1501 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1502 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1503 } else { 1504 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1505 } 1506 } 1507 1508 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1509 *addr_type = hci_stack->le_own_addr_type; 1510 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1511 } 1512 1513 #ifdef ENABLE_LE_PERIPHERAL 1514 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1515 *addr_type = hci_stack->le_advertisements_own_addr_type; 1516 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1517 }; 1518 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1519 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1520 if (advertising_handle == 0){ 1521 gap_le_get_own_advertisements_address(addr_type, addr); 1522 } else { 1523 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1524 if (advertising_set != NULL){ 1525 switch (advertising_set->extended_params.own_address_type){ 1526 case BD_ADDR_TYPE_LE_PUBLIC: 1527 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1528 memcpy(addr, hci_stack->local_bd_addr, 6); 1529 break; 1530 case BD_ADDR_TYPE_LE_RANDOM: 1531 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1532 memcpy(addr, advertising_set->random_address, 6); 1533 break; 1534 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1535 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1536 // do nothing as random address was already set from enhanced connection complete 1537 break; 1538 default: 1539 break; 1540 } 1541 } 1542 } 1543 }; 1544 #endif 1545 #endif 1546 1547 #ifdef ENABLE_LE_CENTRAL 1548 1549 /** 1550 * @brief Get own addr type and address used for LE connections (Central) 1551 */ 1552 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1553 *addr_type = hci_stack->le_connection_own_addr_type; 1554 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1555 } 1556 1557 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1558 1559 uint16_t offset = 3; 1560 uint8_t num_reports = packet[offset]; 1561 offset += 1; 1562 1563 uint16_t i; 1564 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1565 for (i=0; (i<num_reports) && (offset < size);i++){ 1566 // sanity checks on data_length: 1567 uint8_t data_length = packet[offset + 8]; 1568 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1569 if ((offset + 9u + data_length + 1u) > size) return; 1570 // setup event 1571 uint8_t event_size = 10u + data_length; 1572 uint16_t pos = 0; 1573 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1574 event[pos++] = event_size; 1575 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1576 offset += 8; 1577 pos += 8; 1578 event[pos++] = packet[offset + 1 + data_length]; // rssi 1579 event[pos++] = data_length; 1580 offset++; 1581 (void)memcpy(&event[pos], &packet[offset], data_length); 1582 pos += data_length; 1583 offset += data_length + 1u; // rssi 1584 hci_emit_event(event, pos, 1); 1585 } 1586 } 1587 1588 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1589 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1590 uint16_t offset = 3; 1591 uint8_t num_reports = packet[offset++]; 1592 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1593 uint8_t i; 1594 for (i=0; (i<num_reports) && (offset < size);i++){ 1595 // sanity checks on data_length: 1596 uint16_t data_length = packet[offset + 23]; 1597 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1598 if ((offset + 24u + data_length) > size) return; 1599 uint16_t event_type = little_endian_read_16(packet, offset); 1600 offset += 2; 1601 if ((event_type & 0x10) != 0) { 1602 // setup legacy event 1603 uint8_t legacy_event_type; 1604 switch (event_type){ 1605 case 0b0010011: 1606 // ADV_IND 1607 legacy_event_type = 0; 1608 break; 1609 case 0b0010101: 1610 // ADV_DIRECT_IND 1611 legacy_event_type = 1; 1612 break; 1613 case 0b0010010: 1614 // ADV_SCAN_IND 1615 legacy_event_type = 2; 1616 break; 1617 case 0b0010000: 1618 // ADV_NONCONN_IND 1619 legacy_event_type = 3; 1620 break; 1621 case 0b0011011: 1622 case 0b0011010: 1623 // SCAN_RSP 1624 legacy_event_type = 4; 1625 break; 1626 default: 1627 legacy_event_type = 0; 1628 break; 1629 } 1630 uint16_t pos = 0; 1631 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1632 event[pos++] = 10u + data_length; 1633 event[pos++] = legacy_event_type; 1634 // copy address type + address 1635 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1636 offset += 7; 1637 pos += 7; 1638 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1639 offset += 4; 1640 // copy rssi 1641 event[pos++] = packet[offset++]; 1642 // skip periodic advertising interval and direct address 1643 offset += 9; 1644 // copy data len + data; 1645 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1646 pos += 1 +data_length; 1647 offset += 1+ data_length; 1648 hci_emit_event(event, pos, 1); 1649 } else { 1650 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1651 uint8_t report_len = 24 + data_length; 1652 event[1] = report_len; 1653 little_endian_store_16(event, 2, event_type); 1654 memcpy(&event[4], &packet[offset], report_len); 1655 offset += report_len; 1656 hci_emit_event(event, 2 + report_len, 1); 1657 } 1658 } 1659 } 1660 #endif 1661 1662 #endif 1663 #endif 1664 1665 #ifdef ENABLE_BLE 1666 #ifdef ENABLE_LE_PERIPHERAL 1667 static void hci_update_advertisements_enabled_for_current_roles(void){ 1668 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1669 // get number of active le slave connections 1670 int num_slave_connections = 0; 1671 btstack_linked_list_iterator_t it; 1672 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1673 while (btstack_linked_list_iterator_has_next(&it)){ 1674 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1675 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1676 if (con->state != OPEN) continue; 1677 if (con->role != HCI_ROLE_SLAVE) continue; 1678 if (!hci_is_le_connection(con)) continue; 1679 num_slave_connections++; 1680 } 1681 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1682 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1683 } else { 1684 hci_stack->le_advertisements_enabled_for_current_roles = false; 1685 } 1686 } 1687 #endif 1688 #endif 1689 1690 #ifdef ENABLE_CLASSIC 1691 static void gap_run_set_local_name(void){ 1692 hci_reserve_packet_buffer(); 1693 uint8_t * packet = hci_stack->hci_packet_buffer; 1694 // construct HCI Command and send 1695 uint16_t opcode = hci_write_local_name.opcode; 1696 hci_stack->last_cmd_opcode = opcode; 1697 packet[0] = opcode & 0xff; 1698 packet[1] = opcode >> 8; 1699 packet[2] = DEVICE_NAME_LEN; 1700 memset(&packet[3], 0, DEVICE_NAME_LEN); 1701 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1702 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1703 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1704 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1705 // expand '00:00:00:00:00:00' in name with bd_addr 1706 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1707 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1708 } 1709 1710 static void gap_run_set_eir_data(void){ 1711 hci_reserve_packet_buffer(); 1712 uint8_t * packet = hci_stack->hci_packet_buffer; 1713 // construct HCI Command in-place and send 1714 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1715 hci_stack->last_cmd_opcode = opcode; 1716 uint16_t offset = 0; 1717 packet[offset++] = opcode & 0xff; 1718 packet[offset++] = opcode >> 8; 1719 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1720 packet[offset++] = 0; // FEC not required 1721 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1722 if (hci_stack->eir_data){ 1723 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1724 ad_context_t context; 1725 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1726 uint8_t data_type = ad_iterator_get_data_type(&context); 1727 uint8_t size = ad_iterator_get_data_len(&context); 1728 const uint8_t *data = ad_iterator_get_data(&context); 1729 // copy item 1730 packet[offset++] = size + 1; 1731 packet[offset++] = data_type; 1732 memcpy(&packet[offset], data, size); 1733 // update name item 1734 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1735 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1736 } 1737 offset += size; 1738 } 1739 } else { 1740 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1741 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1742 packet[offset++] = bytes_to_copy + 1; 1743 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1744 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1745 // expand '00:00:00:00:00:00' in name with bd_addr 1746 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1747 } 1748 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1749 } 1750 1751 static void hci_run_gap_tasks_classic(void){ 1752 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1753 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1754 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1755 return; 1756 } 1757 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1758 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1759 gap_run_set_local_name(); 1760 return; 1761 } 1762 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1763 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1764 gap_run_set_eir_data(); 1765 return; 1766 } 1767 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1768 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1769 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1770 return; 1771 } 1772 // write page scan activity 1773 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1774 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1775 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1776 return; 1777 } 1778 // write page scan type 1779 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1780 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1781 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1782 return; 1783 } 1784 // write page timeout 1785 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1786 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1787 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1788 return; 1789 } 1790 // send scan enable 1791 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1792 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1793 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1794 return; 1795 } 1796 // send write scan activity 1797 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1798 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1799 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1800 return; 1801 } 1802 // send write inquiry transmit power level 1803 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1804 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1805 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1806 return; 1807 } 1808 } 1809 #endif 1810 1811 #ifndef HAVE_HOST_CONTROLLER_API 1812 1813 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1814 if (!hci_stack->config) return 0; 1815 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1816 // Limit baud rate for Broadcom chipsets to 3 mbps 1817 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1818 baud_rate = 3000000; 1819 } 1820 return baud_rate; 1821 } 1822 1823 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1824 UNUSED(ds); 1825 1826 switch (hci_stack->substate){ 1827 case HCI_INIT_W4_SEND_RESET: 1828 log_info("Resend HCI Reset"); 1829 hci_stack->substate = HCI_INIT_SEND_RESET; 1830 hci_stack->num_cmd_packets = 1; 1831 hci_run(); 1832 break; 1833 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1834 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1835 if (hci_stack->hci_transport->reset_link){ 1836 hci_stack->hci_transport->reset_link(); 1837 } 1838 1839 /* fall through */ 1840 1841 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1842 log_info("Resend HCI Reset - CSR Warm Boot"); 1843 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1844 hci_stack->num_cmd_packets = 1; 1845 hci_run(); 1846 break; 1847 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1848 if (hci_stack->hci_transport->set_baudrate){ 1849 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1850 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1851 hci_stack->hci_transport->set_baudrate(baud_rate); 1852 } 1853 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1854 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1855 if (hci_stack->hci_transport->reset_link){ 1856 log_info("Link Reset"); 1857 hci_stack->hci_transport->reset_link(); 1858 } 1859 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1860 hci_run(); 1861 } 1862 break; 1863 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1864 // otherwise continue 1865 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1866 hci_send_cmd(&hci_read_local_supported_commands); 1867 break; 1868 default: 1869 break; 1870 } 1871 } 1872 #endif 1873 1874 static void hci_initializing_next_state(void){ 1875 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1876 } 1877 1878 static void hci_init_done(void){ 1879 // done. tell the app 1880 log_info("hci_init_done -> HCI_STATE_WORKING"); 1881 hci_stack->state = HCI_STATE_WORKING; 1882 hci_emit_state(); 1883 } 1884 1885 // assumption: hci_can_send_command_packet_now() == true 1886 static void hci_initializing_run(void){ 1887 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1888 1889 if (!hci_can_send_command_packet_now()) return; 1890 1891 #ifndef HAVE_HOST_CONTROLLER_API 1892 bool need_baud_change = hci_stack->config 1893 && hci_stack->chipset 1894 && hci_stack->chipset->set_baudrate_command 1895 && hci_stack->hci_transport->set_baudrate 1896 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1897 #endif 1898 1899 switch (hci_stack->substate){ 1900 case HCI_INIT_SEND_RESET: 1901 hci_state_reset(); 1902 1903 #ifndef HAVE_HOST_CONTROLLER_API 1904 // prepare reset if command complete not received in 100ms 1905 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1906 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1907 btstack_run_loop_add_timer(&hci_stack->timeout); 1908 #endif 1909 // send command 1910 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1911 hci_send_cmd(&hci_reset); 1912 break; 1913 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1914 hci_send_cmd(&hci_read_local_version_information); 1915 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1916 break; 1917 1918 #ifndef HAVE_HOST_CONTROLLER_API 1919 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1920 hci_state_reset(); 1921 // prepare reset if command complete not received in 100ms 1922 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1923 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1924 btstack_run_loop_add_timer(&hci_stack->timeout); 1925 // send command 1926 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1927 hci_send_cmd(&hci_reset); 1928 break; 1929 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1930 hci_state_reset(); 1931 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1932 hci_send_cmd(&hci_reset); 1933 break; 1934 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1935 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1936 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1937 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1938 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1939 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1940 break; 1941 } 1942 case HCI_INIT_SET_BD_ADDR: 1943 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1944 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1945 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1946 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1947 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1948 break; 1949 case HCI_INIT_SEND_READ_LOCAL_NAME: 1950 #ifdef ENABLE_CLASSIC 1951 hci_send_cmd(&hci_read_local_name); 1952 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1953 break; 1954 #endif 1955 /* fall through */ 1956 1957 case HCI_INIT_SEND_BAUD_CHANGE: 1958 if (need_baud_change) { 1959 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1960 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1961 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1962 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1963 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1964 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1965 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1966 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1967 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1968 btstack_run_loop_add_timer(&hci_stack->timeout); 1969 } 1970 break; 1971 } 1972 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1973 1974 /* fall through */ 1975 1976 case HCI_INIT_CUSTOM_INIT: 1977 case HCI_INIT_CUSTOM_PRE_INIT: 1978 // Custom initialization 1979 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1980 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1981 bool send_cmd = false; 1982 switch (hci_stack->chipset_result){ 1983 case BTSTACK_CHIPSET_VALID_COMMAND: 1984 send_cmd = true; 1985 switch (hci_stack->substate){ 1986 case HCI_INIT_CUSTOM_INIT: 1987 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1988 break; 1989 case HCI_INIT_CUSTOM_PRE_INIT: 1990 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1991 break; 1992 default: 1993 btstack_assert(false); 1994 break; 1995 } 1996 break; 1997 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1998 send_cmd = true; 1999 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 2000 log_info("CSR Warm Boot"); 2001 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 2002 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2003 btstack_run_loop_add_timer(&hci_stack->timeout); 2004 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2005 && hci_stack->config 2006 && hci_stack->chipset 2007 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2008 && hci_stack->hci_transport->set_baudrate 2009 && hci_transport_uart_get_main_baud_rate()){ 2010 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2011 } else { 2012 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2013 } 2014 break; 2015 default: 2016 break; 2017 } 2018 2019 if (send_cmd){ 2020 int size = 3u + hci_stack->hci_packet_buffer[2u]; 2021 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 2022 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 2023 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 2024 break; 2025 } 2026 log_info("Init script done"); 2027 2028 // Custom Pre-Init complete, start regular init with HCI Reset 2029 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2030 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2031 hci_send_cmd(&hci_reset); 2032 break; 2033 } 2034 2035 // Init script download on Broadcom chipsets causes: 2036 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2037 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2038 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2039 2040 // - baud rate to reset, restore UART baud rate if needed 2041 if (need_baud_change) { 2042 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2043 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2044 hci_stack->hci_transport->set_baudrate(baud_rate); 2045 } 2046 2047 uint16_t bcm_delay_ms = 300; 2048 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2049 // -> Work around: wait here. 2050 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2051 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2052 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2053 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2054 btstack_run_loop_add_timer(&hci_stack->timeout); 2055 break; 2056 } 2057 } 2058 #endif 2059 /* fall through */ 2060 2061 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2062 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2063 hci_send_cmd(&hci_read_local_supported_commands); 2064 break; 2065 case HCI_INIT_READ_BD_ADDR: 2066 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2067 hci_send_cmd(&hci_read_bd_addr); 2068 break; 2069 case HCI_INIT_READ_BUFFER_SIZE: 2070 // only read buffer size if supported 2071 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2072 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2073 hci_send_cmd(&hci_read_buffer_size); 2074 break; 2075 } 2076 2077 /* fall through */ 2078 2079 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2080 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2081 hci_send_cmd(&hci_read_local_supported_features); 2082 break; 2083 2084 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2085 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2086 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2087 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2088 break; 2089 case HCI_INIT_HOST_BUFFER_SIZE: 2090 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2091 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2092 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2093 break; 2094 #endif 2095 2096 case HCI_INIT_SET_EVENT_MASK: 2097 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2098 if (hci_le_supported()){ 2099 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2100 } else { 2101 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2102 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2103 } 2104 break; 2105 2106 case HCI_INIT_SET_EVENT_MASK_2: 2107 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2108 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2109 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2110 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2111 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2112 // Encryption Change Event v2 - bit 25 2113 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2114 break; 2115 } 2116 2117 #ifdef ENABLE_CLASSIC 2118 /* fall through */ 2119 2120 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2121 if (hci_classic_supported() && gap_ssp_supported()){ 2122 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2123 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2124 break; 2125 } 2126 2127 /* fall through */ 2128 2129 case HCI_INIT_WRITE_INQUIRY_MODE: 2130 if (hci_classic_supported()){ 2131 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2132 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2133 break; 2134 } 2135 2136 /* fall through */ 2137 2138 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2139 // skip write secure connections host support if not supported or disabled 2140 if (hci_classic_supported() && hci_stack->secure_connections_enable 2141 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2142 hci_stack->secure_connections_active = true; 2143 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2144 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2145 break; 2146 } 2147 2148 /* fall through */ 2149 2150 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2151 // skip set min encryption key size 2152 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2153 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2154 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2155 break; 2156 } 2157 2158 #ifdef ENABLE_SCO_OVER_HCI 2159 /* fall through */ 2160 2161 // only sent if ENABLE_SCO_OVER_HCI is defined 2162 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2163 // skip write synchronous flow control if not supported 2164 if (hci_classic_supported() 2165 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2166 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2167 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2168 break; 2169 } 2170 /* fall through */ 2171 2172 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2173 // skip write default erroneous data reporting if not supported 2174 if (hci_classic_supported() 2175 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2176 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2177 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2178 break; 2179 } 2180 #endif 2181 2182 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2183 /* fall through */ 2184 2185 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2186 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2187 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2188 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2189 #ifdef ENABLE_SCO_OVER_HCI 2190 log_info("BCM: Route SCO data via HCI transport"); 2191 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2192 #endif 2193 #ifdef ENABLE_SCO_OVER_PCM 2194 log_info("BCM: Route SCO data via PCM interface"); 2195 #ifdef ENABLE_BCM_PCM_WBS 2196 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2197 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2198 #else 2199 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2200 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2201 #endif 2202 #endif 2203 break; 2204 } 2205 #endif 2206 2207 #ifdef ENABLE_SCO_OVER_PCM 2208 /* fall through */ 2209 2210 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2211 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2212 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2213 log_info("BCM: Config PCM interface for I2S"); 2214 #ifdef ENABLE_BCM_PCM_WBS 2215 // 512 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, 2); 2217 #else 2218 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2219 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2220 #endif 2221 break; 2222 } 2223 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2224 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2225 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2226 log_info("BCM: Config PCM Data format"); 2227 // msb first, fill bits 0, left justified 2228 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2229 break; 2230 } 2231 #ifdef HAVE_BCM_PCM2 2232 case HCI_INIT_BCM_PCM2_SETUP: 2233 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2234 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2235 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2236 uint32_t pcm_clock_freq; 2237 uint8_t ch_0_period; 2238 #ifdef ENABLE_BCM_PCM_WBS 2239 // 512 kHz, resample 8 kHz to 16 khz 2240 pcm_clock_freq = 512000; 2241 ch_0_period = 1; 2242 #else 2243 // 256 khz, 8 khz output 2244 pcm_clock_freq = 256000; 2245 ch_0_period = 0; 2246 #endif 2247 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2248 hci_send_cmd(&hci_bcm_pcm2_setup, 2249 0x00, // Action = Write 2250 0x00, // Test_Options = None 2251 op_mode, // Op_Mode 2252 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2253 pcm_clock_freq, // PCM_Clock_Freq 2254 0x01, // Sync_Signal_Width 2255 0x0F, // Slot_Width 2256 0x01, // NumberOfSlots 2257 0x00, // Bank_0_Fill_Mode = 0s 2258 0x00, // Bank_0_Number_of_Fill_Bits 2259 0x00, // Bank_0_Programmable_Fill_Data 2260 0x00, // Bank_1_Fill_Mode = 0s 2261 0x00, // Bank_1_Number_of_Fill_Bits 2262 0x00, // Bank_1_Programmable_Fill_Data 2263 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2264 0x00, // Ch_0_Slot_Number 2265 0x01, // Ch_1_Slot_Number 2266 0x02, // Ch_2_Slot_Number 2267 0x03, // Ch_3_Slot_Number 2268 0x04, // Ch_4_Slot_Number 2269 ch_0_period, // Ch_0_Period 2270 0x00, // Ch_1_Period 2271 0x00 // Ch_2_Period 2272 ); 2273 break; 2274 } 2275 #endif 2276 #endif /* ENABLE_SCO_OVER_PCM */ 2277 #endif /* ENABLE_CLASSIC */ 2278 2279 #ifdef ENABLE_BLE 2280 /* fall through */ 2281 2282 // LE INIT 2283 case HCI_INIT_LE_READ_BUFFER_SIZE: 2284 if (hci_le_supported()){ 2285 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2286 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2287 hci_send_cmd(&hci_le_read_buffer_size_v2); 2288 } else { 2289 hci_send_cmd(&hci_le_read_buffer_size); 2290 } 2291 break; 2292 } 2293 2294 /* fall through */ 2295 2296 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2297 // skip write le host if not supported (e.g. on LE only EM9301) 2298 if (hci_le_supported() 2299 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2300 // LE Supported Host = 1, Simultaneous Host = 0 2301 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2302 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2303 break; 2304 } 2305 2306 /* fall through */ 2307 2308 case HCI_INIT_LE_SET_EVENT_MASK: 2309 if (hci_le_supported()){ 2310 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2311 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2312 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2313 #else 2314 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2315 #endif 2316 break; 2317 } 2318 #endif 2319 2320 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2321 /* fall through */ 2322 2323 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2324 if (hci_le_supported() 2325 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2326 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2327 hci_send_cmd(&hci_le_read_maximum_data_length); 2328 break; 2329 } 2330 2331 /* fall through */ 2332 2333 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2334 if (hci_le_supported() 2335 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2336 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2337 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2338 break; 2339 } 2340 #endif 2341 2342 #ifdef ENABLE_LE_CENTRAL 2343 /* fall through */ 2344 2345 case HCI_INIT_READ_WHITE_LIST_SIZE: 2346 if (hci_le_supported()){ 2347 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2348 hci_send_cmd(&hci_le_read_white_list_size); 2349 break; 2350 } 2351 2352 #endif 2353 2354 #ifdef ENABLE_LE_PERIPHERAL 2355 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2356 /* fall through */ 2357 2358 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2359 if (hci_le_extended_advertising_supported()){ 2360 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2361 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2362 break; 2363 } 2364 #endif 2365 #endif 2366 /* fall through */ 2367 2368 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2369 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2370 if (hci_le_supported()) { 2371 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2372 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2373 break; 2374 } 2375 #endif 2376 2377 /* fall through */ 2378 2379 case HCI_INIT_DONE: 2380 hci_stack->substate = HCI_INIT_DONE; 2381 // main init sequence complete 2382 #ifdef ENABLE_CLASSIC 2383 // check if initial Classic GAP Tasks are completed 2384 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2385 hci_run_gap_tasks_classic(); 2386 break; 2387 } 2388 #endif 2389 #ifdef ENABLE_BLE 2390 #ifdef ENABLE_LE_CENTRAL 2391 // check if initial LE GAP Tasks are completed 2392 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2393 hci_run_general_gap_le(); 2394 break; 2395 } 2396 #endif 2397 #endif 2398 hci_init_done(); 2399 break; 2400 2401 default: 2402 return; 2403 } 2404 } 2405 2406 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2407 bool command_completed = false; 2408 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2409 uint16_t opcode = little_endian_read_16(packet,3); 2410 if (opcode == hci_stack->last_cmd_opcode){ 2411 command_completed = true; 2412 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2413 } else { 2414 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2415 } 2416 } 2417 2418 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2419 uint8_t status = packet[2]; 2420 uint16_t opcode = little_endian_read_16(packet,4); 2421 if (opcode == hci_stack->last_cmd_opcode){ 2422 if (status){ 2423 command_completed = true; 2424 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2425 } else { 2426 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2427 } 2428 } else { 2429 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2430 } 2431 } 2432 #ifndef HAVE_HOST_CONTROLLER_API 2433 // Vendor == CSR 2434 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2435 // TODO: track actual command 2436 command_completed = true; 2437 } 2438 2439 // Vendor == Toshiba 2440 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2441 // TODO: track actual command 2442 command_completed = true; 2443 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2444 hci_stack->num_cmd_packets = 1; 2445 } 2446 #endif 2447 2448 return command_completed; 2449 } 2450 2451 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2452 2453 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2454 2455 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2456 2457 #ifndef HAVE_HOST_CONTROLLER_API 2458 2459 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2460 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2461 // 2462 // HCI Reset 2463 // Timeout 100 ms 2464 // HCI Reset 2465 // Command Complete Reset 2466 // HCI Read Local Version Information 2467 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2468 // hang... 2469 // 2470 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2471 if (!command_completed 2472 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2473 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2474 2475 uint16_t opcode = little_endian_read_16(packet,3); 2476 if (opcode == hci_reset.opcode){ 2477 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2478 return; 2479 } 2480 } 2481 2482 // CSR & H5 2483 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2484 if (!command_completed 2485 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2486 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2487 2488 uint16_t opcode = little_endian_read_16(packet,3); 2489 if (opcode == hci_reset.opcode){ 2490 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2491 return; 2492 } 2493 } 2494 2495 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2496 // fix: Correct substate and behave as command below 2497 if (command_completed){ 2498 switch (hci_stack->substate){ 2499 case HCI_INIT_SEND_RESET: 2500 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2501 break; 2502 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2503 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2504 break; 2505 default: 2506 break; 2507 } 2508 } 2509 2510 #endif 2511 2512 if (!command_completed) return; 2513 2514 bool need_baud_change = false; 2515 bool need_addr_change = false; 2516 2517 #ifndef HAVE_HOST_CONTROLLER_API 2518 need_baud_change = hci_stack->config 2519 && hci_stack->chipset 2520 && hci_stack->chipset->set_baudrate_command 2521 && hci_stack->hci_transport->set_baudrate 2522 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2523 2524 need_addr_change = hci_stack->custom_bd_addr_set 2525 && hci_stack->chipset 2526 && hci_stack->chipset->set_bd_addr_command; 2527 #endif 2528 2529 switch(hci_stack->substate){ 2530 2531 #ifndef HAVE_HOST_CONTROLLER_API 2532 case HCI_INIT_SEND_RESET: 2533 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2534 // fix: just correct substate and behave as command below 2535 2536 /* fall through */ 2537 #endif 2538 2539 case HCI_INIT_W4_SEND_RESET: 2540 btstack_run_loop_remove_timer(&hci_stack->timeout); 2541 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2542 return; 2543 2544 #ifndef HAVE_HOST_CONTROLLER_API 2545 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2546 // for STLC2500D, baud rate change already happened. 2547 // for others, baud rate gets changed now 2548 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2549 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2550 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2551 hci_stack->hci_transport->set_baudrate(baud_rate); 2552 } 2553 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2554 return; 2555 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2556 btstack_run_loop_remove_timer(&hci_stack->timeout); 2557 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2558 return; 2559 case HCI_INIT_W4_CUSTOM_INIT: 2560 // repeat custom init 2561 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2562 return; 2563 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2564 // repeat custom init 2565 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2566 return; 2567 #endif 2568 2569 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2570 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2571 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2572 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2573 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2574 return; 2575 } 2576 if (need_addr_change){ 2577 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2578 return; 2579 } 2580 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2581 return; 2582 #ifndef HAVE_HOST_CONTROLLER_API 2583 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2584 if (need_baud_change){ 2585 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2586 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2587 hci_stack->hci_transport->set_baudrate(baud_rate); 2588 } 2589 if (need_addr_change){ 2590 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2591 return; 2592 } 2593 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2594 return; 2595 case HCI_INIT_W4_SET_BD_ADDR: 2596 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2597 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2598 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2599 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2600 return; 2601 } 2602 // skipping st warm boot 2603 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2604 return; 2605 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2606 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2607 return; 2608 #endif 2609 2610 case HCI_INIT_DONE: 2611 // set state if we came here by fall through 2612 hci_stack->substate = HCI_INIT_DONE; 2613 return; 2614 2615 default: 2616 break; 2617 } 2618 hci_initializing_next_state(); 2619 } 2620 2621 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2622 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2623 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2624 // check if we have been aware of the HCI connection 2625 switch (conn->state){ 2626 case SENT_CREATE_CONNECTION: 2627 case RECEIVED_CONNECTION_REQUEST: 2628 case ACCEPTED_CONNECTION_REQUEST: 2629 break; 2630 default: 2631 return; 2632 } 2633 2634 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2635 bd_addr_t bd_address; 2636 (void)memcpy(&bd_address, conn->address, 6); 2637 2638 #ifdef ENABLE_CLASSIC 2639 // cache needed data 2640 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2641 #endif 2642 2643 // connection failed, remove entry 2644 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2645 btstack_memory_hci_connection_free( conn ); 2646 2647 #ifdef ENABLE_CLASSIC 2648 // notify client if dedicated bonding 2649 if (notify_dedicated_bonding_failed){ 2650 log_info("hci notify_dedicated_bonding_failed"); 2651 hci_emit_dedicated_bonding_result(bd_address, status); 2652 } 2653 2654 // if authentication error, also delete link key 2655 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2656 gap_drop_link_key_for_bd_addr(bd_address); 2657 } 2658 #else 2659 UNUSED(status); 2660 #endif 2661 } 2662 2663 #ifdef ENABLE_CLASSIC 2664 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2665 // SSP Controller 2666 if (features[6] & (1 << 3)){ 2667 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2668 } 2669 // eSCO 2670 if (features[3] & (1<<7)){ 2671 conn->remote_supported_features[0] |= 1; 2672 } 2673 // Extended features 2674 if (features[7] & (1<<7)){ 2675 conn->remote_supported_features[0] |= 2; 2676 } 2677 // SCO packet types 2678 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2679 } 2680 2681 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2682 // SSP Host 2683 if (features[0] & (1 << 0)){ 2684 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2685 } 2686 // SC Host 2687 if (features[0] & (1 << 3)){ 2688 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2689 } 2690 } 2691 2692 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2693 // SC Controller 2694 if (features[1] & (1 << 0)){ 2695 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2696 } 2697 } 2698 2699 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2700 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2701 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2702 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2703 if (conn->bonding_flags & BONDING_DEDICATED){ 2704 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2705 } 2706 } 2707 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2708 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2709 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2710 } 2711 2712 #endif 2713 2714 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2715 // handle BT initialization 2716 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2717 hci_initializing_event_handler(packet, size); 2718 } 2719 2720 // help with BT sleep 2721 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2722 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2723 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2724 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2725 hci_initializing_next_state(); 2726 } 2727 } 2728 2729 #ifdef ENABLE_CLASSIC 2730 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2731 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2732 conn->requested_security_level = LEVEL_0; 2733 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2734 hci_emit_security_level(conn->con_handle, security_level); 2735 2736 // dedicated bonding 2737 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2738 conn->bonding_flags &= ~BONDING_DEDICATED; 2739 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2740 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2741 // emit dedicated bonding complete, don't disconnect 2742 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2743 #else 2744 // request disconnect, event is emitted after disconnect 2745 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2746 #endif 2747 } 2748 } 2749 2750 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2751 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2752 conn->encryption_key_size = encryption_key_size; 2753 2754 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2755 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2756 hci_handle_mutual_authentication_completed(conn); 2757 } else { 2758 // otherwise trigger remote feature request and send authentication request 2759 hci_trigger_remote_features_for_connection(conn); 2760 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2761 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2762 } 2763 } 2764 } 2765 #endif 2766 2767 static void hci_store_local_supported_commands(const uint8_t * packet){ 2768 // create mapping table 2769 #define X(name, offset, bit) { offset, bit }, 2770 static struct { 2771 uint8_t byte_offset; 2772 uint8_t bit_position; 2773 } supported_hci_commands_map [] = { 2774 SUPPORTED_HCI_COMMANDS 2775 }; 2776 #undef X 2777 2778 // create names for debug purposes 2779 #ifdef ENABLE_LOG_DEBUG 2780 #define X(name, offset, bit) #name, 2781 static const char * command_names[] = { 2782 SUPPORTED_HCI_COMMANDS 2783 }; 2784 #undef X 2785 #endif 2786 2787 hci_stack->local_supported_commands = 0; 2788 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2789 uint16_t i; 2790 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2791 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2792 #ifdef ENABLE_LOG_DEBUG 2793 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); 2794 #else 2795 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2796 #endif 2797 hci_stack->local_supported_commands |= (1LU << i); 2798 } 2799 } 2800 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2801 } 2802 2803 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2804 UNUSED(size); 2805 2806 uint8_t status = 0; 2807 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2808 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2809 } 2810 uint16_t manufacturer; 2811 #ifdef ENABLE_CLASSIC 2812 hci_connection_t * conn; 2813 #endif 2814 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2815 hci_con_handle_t handle; 2816 #endif 2817 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2818 le_audio_cig_t * cig; 2819 #endif 2820 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2821 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2822 #endif 2823 2824 // get num cmd packets - limit to 1 to reduce complexity 2825 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2826 2827 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2828 switch (opcode){ 2829 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2830 if (status) break; 2831 // terminate, name 248 chars 2832 packet[6+248] = 0; 2833 log_info("local name: %s", &packet[6]); 2834 break; 2835 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2836 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2837 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2838 uint16_t acl_len = little_endian_read_16(packet, 6); 2839 uint16_t sco_len = packet[8]; 2840 2841 // determine usable ACL/SCO payload size 2842 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2843 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2844 2845 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2846 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2847 2848 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2849 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2850 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2851 } 2852 break; 2853 case HCI_OPCODE_HCI_READ_RSSI: 2854 if (status == ERROR_CODE_SUCCESS){ 2855 uint8_t event[5]; 2856 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2857 event[1] = 3; 2858 (void)memcpy(&event[2], &packet[6], 3); 2859 hci_emit_event(event, sizeof(event), 1); 2860 } 2861 break; 2862 #ifdef ENABLE_BLE 2863 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2864 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2865 hci_stack->le_iso_packets_total_num = packet[11]; 2866 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2867 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2868 2869 /* fall through */ 2870 2871 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2872 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2873 hci_stack->le_acl_packets_total_num = packet[8]; 2874 // determine usable ACL payload size 2875 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2876 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2877 } 2878 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); 2879 break; 2880 #endif 2881 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2882 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2883 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2884 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2885 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); 2886 break; 2887 #endif 2888 #ifdef ENABLE_LE_CENTRAL 2889 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2890 hci_stack->le_whitelist_capacity = packet[6]; 2891 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2892 break; 2893 #endif 2894 #ifdef ENABLE_LE_PERIPHERAL 2895 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2896 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2897 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2898 break; 2899 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2900 if (hci_stack->le_advertising_set_in_current_command != 0) { 2901 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2902 hci_stack->le_advertising_set_in_current_command = 0; 2903 if (advertising_set == NULL) break; 2904 uint8_t adv_status = packet[6]; 2905 uint8_t tx_power = packet[7]; 2906 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 }; 2907 if (adv_status == 0){ 2908 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2909 } 2910 hci_emit_event(event, sizeof(event), 1); 2911 } 2912 break; 2913 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2914 if (hci_stack->le_advertising_set_in_current_command != 0) { 2915 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2916 hci_stack->le_advertising_set_in_current_command = 0; 2917 if (advertising_set == NULL) break; 2918 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2919 if (status == 0){ 2920 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2921 } 2922 hci_emit_event(event, sizeof(event), 1); 2923 } 2924 break; 2925 #endif 2926 #endif 2927 case HCI_OPCODE_HCI_READ_BD_ADDR: 2928 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2929 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2930 #ifdef ENABLE_CLASSIC 2931 if (hci_stack->link_key_db){ 2932 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2933 } 2934 #endif 2935 break; 2936 #ifdef ENABLE_CLASSIC 2937 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2938 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2939 break; 2940 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2941 if (status == ERROR_CODE_SUCCESS) { 2942 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2943 } else { 2944 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2945 } 2946 break; 2947 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2948 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2949 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2950 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2951 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2952 hci_emit_event(event, sizeof(event), 1); 2953 } 2954 break; 2955 #endif 2956 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2957 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2958 2959 #ifdef ENABLE_CLASSIC 2960 // determine usable ACL packet types based on host buffer size and supported features 2961 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]); 2962 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2963 // determine usable SCO packet types based on supported features 2964 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2965 &hci_stack->local_supported_features[0]); 2966 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2967 #endif 2968 // Classic/LE 2969 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2970 break; 2971 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2972 manufacturer = little_endian_read_16(packet, 10); 2973 // map Cypress & Infineon to Broadcom 2974 switch (manufacturer){ 2975 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2976 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2977 log_info("Treat Cypress/Infineon as Broadcom"); 2978 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2979 little_endian_store_16(packet, 10, manufacturer); 2980 break; 2981 default: 2982 break; 2983 } 2984 hci_stack->manufacturer = manufacturer; 2985 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2986 break; 2987 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2988 hci_store_local_supported_commands(packet); 2989 break; 2990 #ifdef ENABLE_CLASSIC 2991 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2992 if (status) return; 2993 hci_stack->synchronous_flow_control_enabled = 1; 2994 break; 2995 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2996 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2997 conn = hci_connection_for_handle(handle); 2998 if (conn != NULL) { 2999 uint8_t key_size = 0; 3000 if (status == 0){ 3001 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 3002 log_info("Handle %04x key Size: %u", handle, key_size); 3003 } else { 3004 key_size = 1; 3005 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3006 } 3007 hci_handle_read_encryption_key_size_complete(conn, key_size); 3008 } 3009 break; 3010 // assert pairing complete event is emitted. 3011 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3012 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3013 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3014 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3015 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3016 // lookup connection by gap pairing addr 3017 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3018 if (conn == NULL) break; 3019 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3020 break; 3021 3022 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3023 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3024 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3025 uint8_t event[67]; 3026 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3027 event[1] = 65; 3028 (void)memset(&event[2], 0, 65); 3029 if (status == ERROR_CODE_SUCCESS){ 3030 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3031 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3032 event[2] = 3; 3033 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3034 } else { 3035 event[2] = 1; 3036 } 3037 } 3038 hci_emit_event(event, sizeof(event), 0); 3039 break; 3040 } 3041 3042 // note: only needed if user does not provide OOB data 3043 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3044 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3045 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3046 if (conn == NULL) break; 3047 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3048 break; 3049 #endif 3050 #endif 3051 #ifdef ENABLE_BLE 3052 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3053 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3054 // lookup CIG 3055 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3056 if (cig != NULL){ 3057 uint8_t i = 0; 3058 if (status == ERROR_CODE_SUCCESS){ 3059 // assign CIS handles to pre-allocated CIS 3060 btstack_linked_list_iterator_t it; 3061 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3062 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3063 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3064 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3065 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3066 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3067 iso_stream->cis_handle = cis_handle; 3068 cig->cis_con_handles[i] = cis_handle; 3069 i++; 3070 } 3071 } 3072 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3073 hci_emit_cig_created(cig, status); 3074 } else { 3075 hci_emit_cig_created(cig, status); 3076 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3077 } 3078 } 3079 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3080 break; 3081 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3082 if (status != ERROR_CODE_SUCCESS){ 3083 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3084 } 3085 break; 3086 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3087 if (status != ERROR_CODE_SUCCESS){ 3088 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3089 } 3090 break; 3091 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3092 // lookup BIG by state 3093 btstack_linked_list_iterator_t it; 3094 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3095 while (btstack_linked_list_iterator_has_next(&it)) { 3096 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3097 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3098 if (status == ERROR_CODE_SUCCESS){ 3099 big->state_vars.next_bis++; 3100 if (big->state_vars.next_bis == big->num_bis){ 3101 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3102 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3103 } else { 3104 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3105 } 3106 } else { 3107 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3108 big->state_vars.status = status; 3109 } 3110 return; 3111 } 3112 } 3113 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3114 while (btstack_linked_list_iterator_has_next(&it)) { 3115 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3116 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3117 if (status == ERROR_CODE_SUCCESS){ 3118 big_sync->state_vars.next_bis++; 3119 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3120 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3121 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3122 } else { 3123 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3124 } 3125 } else { 3126 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3127 big_sync->state_vars.status = status; 3128 } 3129 return; 3130 } 3131 } 3132 // Lookup CIS via active group operation 3133 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3134 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3135 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3136 3137 // lookup CIS by state 3138 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3139 while (btstack_linked_list_iterator_has_next(&it)){ 3140 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3141 handle = iso_stream->cis_handle; 3142 bool emit_cis_created = false; 3143 switch (iso_stream->state){ 3144 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3145 if (status != ERROR_CODE_SUCCESS){ 3146 emit_cis_created = true; 3147 break; 3148 } 3149 if (iso_stream->max_sdu_c_to_p > 0){ 3150 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3151 } else { 3152 emit_cis_created = true; 3153 } 3154 break; 3155 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3156 emit_cis_created = true; 3157 break; 3158 default: 3159 break; 3160 } 3161 if (emit_cis_created){ 3162 hci_cis_handle_created(iso_stream, status); 3163 } 3164 } 3165 } else { 3166 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3167 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3168 if (cig != NULL) { 3169 // emit cis created if all ISO Paths have been created 3170 // assume we are central 3171 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3172 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3173 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3174 // if outgoing has been setup, or incoming was setup but outgoing not required 3175 if ((cis_direction == 1) || (outgoing_needed == false)){ 3176 // lookup iso stream by cig/cis 3177 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3178 while (btstack_linked_list_iterator_has_next(&it)) { 3179 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3180 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3181 hci_cis_handle_created(iso_stream, status); 3182 } 3183 } 3184 } 3185 // next state 3186 cig->state_vars.next_cis++; 3187 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3188 } 3189 } 3190 } 3191 break; 3192 } 3193 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3194 // lookup BIG by state 3195 btstack_linked_list_iterator_t it; 3196 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3197 while (btstack_linked_list_iterator_has_next(&it)) { 3198 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3199 uint8_t big_handle = big_sync->big_handle; 3200 switch (big_sync->state){ 3201 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3202 btstack_linked_list_iterator_remove(&it); 3203 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3204 return; 3205 default: 3206 btstack_linked_list_iterator_remove(&it); 3207 hci_emit_big_sync_stopped(big_handle); 3208 return; 3209 } 3210 } 3211 break; 3212 } 3213 #endif 3214 #endif 3215 default: 3216 break; 3217 } 3218 } 3219 3220 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3221 UNUSED(size); 3222 3223 // get num cmd packets - limit to 1 to reduce complexity 3224 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3225 3226 // get opcode and command status 3227 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3228 3229 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3230 uint8_t status = hci_event_command_status_get_status(packet); 3231 #endif 3232 3233 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3234 bd_addr_type_t addr_type; 3235 bd_addr_t addr; 3236 #endif 3237 3238 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3239 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3240 #endif 3241 3242 switch (opcode){ 3243 #ifdef ENABLE_CLASSIC 3244 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3245 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3246 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3247 #endif 3248 #ifdef ENABLE_LE_CENTRAL 3249 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3250 #endif 3251 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3252 addr_type = hci_stack->outgoing_addr_type; 3253 memcpy(addr, hci_stack->outgoing_addr, 6); 3254 3255 // reset outgoing address info 3256 memset(hci_stack->outgoing_addr, 0, 6); 3257 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3258 3259 // on error 3260 if (status != ERROR_CODE_SUCCESS){ 3261 #ifdef ENABLE_LE_CENTRAL 3262 if (hci_is_le_connection_type(addr_type)){ 3263 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3264 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3265 } 3266 #endif 3267 // error => outgoing connection failed 3268 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3269 if (conn != NULL){ 3270 hci_handle_connection_failed(conn, status); 3271 } 3272 } 3273 break; 3274 #endif 3275 #ifdef ENABLE_CLASSIC 3276 case HCI_OPCODE_HCI_INQUIRY: 3277 if (status == ERROR_CODE_SUCCESS) { 3278 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3279 } else { 3280 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3281 } 3282 break; 3283 #endif 3284 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3285 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3286 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3287 if (status == ERROR_CODE_SUCCESS){ 3288 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3289 } else { 3290 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3291 } 3292 break; 3293 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3294 default: 3295 break; 3296 } 3297 } 3298 3299 #ifdef ENABLE_BLE 3300 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3301 gap_event[0] = HCI_EVENT_META_GAP; 3302 gap_event[1] = 36 - 2; 3303 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3304 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3305 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3306 memcpy(&gap_event[3], &hci_event[3], 11); 3307 memset(&gap_event[14], 0, 12); 3308 memcpy(&gap_event[26], &hci_event[14], 7); 3309 memset(&gap_event[33], 0xff, 3); 3310 break; 3311 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3312 memcpy(&gap_event[3], &hci_event[3], 30); 3313 memset(&gap_event[33], 0xff, 3); 3314 break; 3315 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3316 memcpy(&gap_event[3], &hci_event[3], 33); 3317 break; 3318 default: 3319 btstack_unreachable(); 3320 break; 3321 } 3322 } 3323 3324 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3325 bd_addr_t addr; 3326 bd_addr_type_t addr_type; 3327 hci_connection_t * conn; 3328 3329 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3330 uint8_t gap_event[36]; 3331 hci_create_gap_connection_complete_event(hci_event, gap_event); 3332 3333 // read fields 3334 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3335 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3336 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3337 3338 // Connection management 3339 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3340 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3341 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3342 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3343 3344 #ifdef ENABLE_LE_CENTRAL 3345 // handle error: error is reported only to the initiator -> outgoing connection 3346 if (status){ 3347 3348 // handle cancelled outgoing connection 3349 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3350 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3351 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3352 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3353 // reset state 3354 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3355 // get outgoing connection conn struct for direct connect 3356 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3357 conn = gap_get_outgoing_le_connection(); 3358 conn->state = SEND_CREATE_CONNECTION; 3359 } 3360 } 3361 3362 // free connection if cancelled by user (request == IDLE) 3363 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 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 return; 3369 } 3370 #endif 3371 3372 // on success, both hosts receive connection complete event 3373 if (role == HCI_ROLE_MASTER){ 3374 #ifdef ENABLE_LE_CENTRAL 3375 // if we're master, it was an outgoing connection 3376 // note: no hci_connection_t object exists yet for connect with whitelist 3377 3378 // if a identity addresses was used without enhanced connection complete event, 3379 // the connection complete event contains the current random address of the peer device. 3380 // This random address is needed in the case of a re-pairing 3381 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3382 conn = gap_get_outgoing_le_connection(); 3383 // if outgoing connection object is available, check if identity address was used. 3384 // if yes, track resolved random address and provide rpa 3385 // note: we don't update hci le subevent connection complete 3386 if (conn != NULL){ 3387 if (hci_is_le_identity_address_type(conn->address_type)){ 3388 memcpy(&gap_event[20], &gap_event[8], 6); 3389 gap_event[7] = conn->address_type; 3390 reverse_bd_addr(conn->address, &gap_event[8]); 3391 } 3392 } 3393 } 3394 3395 // we're done with it 3396 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3397 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3398 #endif 3399 } else { 3400 #ifdef ENABLE_LE_PERIPHERAL 3401 // if we're slave, it was an incoming connection, advertisements have stopped 3402 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3403 #endif 3404 } 3405 3406 // LE connections are auto-accepted, so just create a connection if there isn't one already 3407 if (!conn){ 3408 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3409 } 3410 3411 // no memory, sorry. 3412 if (!conn){ 3413 return; 3414 } 3415 3416 conn->state = OPEN; 3417 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3418 conn->le_connection_interval = conn_interval; 3419 3420 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3421 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3422 3423 #ifdef ENABLE_LE_PERIPHERAL 3424 if (role == HCI_ROLE_SLAVE){ 3425 hci_update_advertisements_enabled_for_current_roles(); 3426 } 3427 #endif 3428 3429 // init unenhanced att bearer mtu 3430 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3431 conn->att_connection.mtu_exchanged = false; 3432 3433 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3434 3435 // restart timer 3436 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3437 // btstack_run_loop_add_timer(&conn->timeout); 3438 3439 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3440 3441 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3442 hci_emit_event(gap_event, sizeof(gap_event), 1); 3443 3444 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3445 hci_emit_nr_connections_changed(); 3446 } 3447 #endif 3448 3449 #ifdef ENABLE_CLASSIC 3450 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){ 3451 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3452 // LEVEL_4 is tested by l2cap 3453 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3454 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3455 if (level >= LEVEL_3){ 3456 // MITM not possible without keyboard or display 3457 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3458 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3459 3460 // MITM possible if one side has keyboard and the other has keyboard or display 3461 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3462 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3463 3464 // MITM not possible if one side has only display and other side has no keyboard 3465 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3466 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3467 } 3468 // LEVEL 2 requires SSP, which is a given 3469 return true; 3470 } 3471 3472 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3473 // get requested security level 3474 gap_security_level_t requested_security_level = conn->requested_security_level; 3475 if (hci_stack->gap_secure_connections_only_mode){ 3476 requested_security_level = LEVEL_4; 3477 } 3478 3479 // assess security: LEVEL 4 requires SC 3480 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3481 if ((requested_security_level == LEVEL_4) && 3482 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3483 !hci_remote_sc_enabled(conn)){ 3484 log_info("Level 4 required, but SC not supported -> abort"); 3485 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3486 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3487 return; 3488 } 3489 3490 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3491 // - GAP/MOD/NBON/BV-02-C 3492 // - GAP/DM/NBON/BV-01-C 3493 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3494 switch (conn->io_cap_response_auth_req){ 3495 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3496 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3497 if (hci_stack->bondable == false){ 3498 log_info("Dedicated vs. non-bondable -> abort"); 3499 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3500 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3501 return; 3502 } 3503 default: 3504 break; 3505 } 3506 } 3507 3508 // assess security based on io capabilities 3509 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3510 // responder: fully validate io caps of both sides as well as OOB data 3511 bool security_possible = false; 3512 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3513 3514 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3515 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3516 // so we merge the OOB data availability 3517 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3518 if (conn->classic_oob_c_192 != NULL){ 3519 have_oob_data |= 1; 3520 } 3521 if (conn->classic_oob_c_256 != NULL){ 3522 have_oob_data |= 2; 3523 } 3524 // for up to Level 3, either P-192 as well as P-256 will do 3525 // 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 3526 // if remote does not SC, we should not receive P-256 data either 3527 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3528 security_possible = true; 3529 } 3530 // for Level 4, P-256 is needed 3531 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3532 security_possible = true; 3533 } 3534 #endif 3535 3536 if (security_possible == false){ 3537 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3538 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3539 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3540 return; 3541 } 3542 } else { 3543 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3544 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3545 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3546 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3547 log_info("Level 3+ required, but no input/output -> abort"); 3548 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3549 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3550 return; 3551 } 3552 #endif 3553 #endif 3554 } 3555 3556 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3557 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3558 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3559 } else { 3560 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3561 } 3562 #endif 3563 } 3564 3565 #endif 3566 3567 static void event_handler(uint8_t *packet, uint16_t size){ 3568 3569 uint16_t event_length = packet[1]; 3570 3571 // assert packet is complete 3572 if (size != (event_length + 2u)){ 3573 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3574 return; 3575 } 3576 3577 hci_con_handle_t handle; 3578 hci_connection_t * conn; 3579 int i; 3580 3581 #ifdef ENABLE_CLASSIC 3582 hci_link_type_t link_type; 3583 bd_addr_t addr; 3584 bd_addr_type_t addr_type; 3585 #endif 3586 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3587 hci_iso_stream_t * iso_stream; 3588 le_audio_big_t * big; 3589 le_audio_big_sync_t * big_sync; 3590 #endif 3591 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3592 btstack_linked_list_iterator_t it; 3593 #endif 3594 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3595 uint8_t advertising_handle; 3596 #endif 3597 3598 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3599 3600 switch (hci_event_packet_get_type(packet)) { 3601 3602 case HCI_EVENT_COMMAND_COMPLETE: 3603 handle_command_complete_event(packet, size); 3604 break; 3605 3606 case HCI_EVENT_COMMAND_STATUS: 3607 handle_command_status_event(packet, size); 3608 break; 3609 3610 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3611 if (size < 3) return; 3612 uint16_t num_handles = packet[2]; 3613 if (size != (3u + num_handles * 4u)) return; 3614 #ifdef ENABLE_CLASSIC 3615 bool notify_sco = false; 3616 #endif 3617 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3618 bool notify_iso = false; 3619 #endif 3620 uint16_t offset = 3; 3621 for (i=0; i<num_handles;i++){ 3622 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3623 offset += 2u; 3624 uint16_t num_packets = little_endian_read_16(packet, offset); 3625 offset += 2u; 3626 3627 conn = hci_connection_for_handle(handle); 3628 if (conn != NULL) { 3629 3630 if (conn->num_packets_sent >= num_packets) { 3631 conn->num_packets_sent -= num_packets; 3632 } else { 3633 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3634 conn->num_packets_sent = 0; 3635 } 3636 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3637 #ifdef ENABLE_CLASSIC 3638 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3639 notify_sco = true; 3640 } 3641 #endif 3642 } 3643 3644 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3645 hci_controller_dump_packets(); 3646 #endif 3647 3648 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3649 if (conn == NULL){ 3650 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3651 if (iso_stream != NULL){ 3652 if (iso_stream->num_packets_sent >= num_packets) { 3653 iso_stream->num_packets_sent -= num_packets; 3654 } else { 3655 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3656 iso_stream->num_packets_sent = 0; 3657 } 3658 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3659 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3660 if (big != NULL){ 3661 big->num_completed_timestamp_current_valid = true; 3662 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3663 } 3664 } 3665 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3666 num_packets, handle, iso_stream->num_packets_sent); 3667 notify_iso = true; 3668 } 3669 } 3670 #endif 3671 } 3672 3673 #ifdef ENABLE_CLASSIC 3674 if (notify_sco){ 3675 hci_notify_if_sco_can_send_now(); 3676 } 3677 #endif 3678 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3679 if (notify_iso){ 3680 hci_iso_notify_can_send_now(); 3681 } 3682 #endif 3683 break; 3684 } 3685 3686 #ifdef ENABLE_CLASSIC 3687 case HCI_EVENT_FLUSH_OCCURRED: 3688 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3689 handle = hci_event_flush_occurred_get_handle(packet); 3690 conn = hci_connection_for_handle(handle); 3691 if (conn) { 3692 log_info("Flush occurred, disconnect 0x%04x", handle); 3693 conn->state = SEND_DISCONNECT; 3694 } 3695 break; 3696 3697 case HCI_EVENT_INQUIRY_COMPLETE: 3698 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3699 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3700 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3701 hci_emit_event(event, sizeof(event), 1); 3702 } 3703 break; 3704 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3705 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3706 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3707 } 3708 break; 3709 case HCI_EVENT_CONNECTION_REQUEST: 3710 reverse_bd_addr(&packet[2], addr); 3711 link_type = (hci_link_type_t) packet[11]; 3712 3713 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3714 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3715 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3716 bd_addr_copy(hci_stack->decline_addr, addr); 3717 break; 3718 } 3719 3720 if (hci_stack->gap_classic_accept_callback != NULL){ 3721 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3722 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3723 bd_addr_copy(hci_stack->decline_addr, addr); 3724 break; 3725 } 3726 } 3727 3728 // TODO: eval COD 8-10 3729 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3730 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3731 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3732 if (!conn) { 3733 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3734 } 3735 if (!conn) { 3736 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3737 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3738 bd_addr_copy(hci_stack->decline_addr, addr); 3739 hci_run(); 3740 // avoid event to higher layer 3741 return; 3742 } 3743 conn->state = RECEIVED_CONNECTION_REQUEST; 3744 // store info about eSCO 3745 if (link_type == HCI_LINK_TYPE_ESCO){ 3746 conn->remote_supported_features[0] |= 1; 3747 } 3748 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3749 if (addr_type == BD_ADDR_TYPE_SCO){ 3750 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3751 // ACL exists unless fuzzing 3752 if (acl_conn != NULL) { 3753 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3754 } 3755 } 3756 hci_run(); 3757 break; 3758 3759 case HCI_EVENT_CONNECTION_COMPLETE: 3760 // Connection management 3761 reverse_bd_addr(&packet[5], addr); 3762 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3763 addr_type = BD_ADDR_TYPE_ACL; 3764 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3765 if (conn) { 3766 switch (conn->state){ 3767 // expected states 3768 case ACCEPTED_CONNECTION_REQUEST: 3769 case SENT_CREATE_CONNECTION: 3770 break; 3771 // unexpected state -> ignore 3772 default: 3773 // don't forward event to app 3774 return; 3775 } 3776 if (!packet[2]){ 3777 conn->state = OPEN; 3778 conn->con_handle = little_endian_read_16(packet, 3); 3779 3780 // trigger write supervision timeout if we're master 3781 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3782 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3783 } 3784 3785 // trigger write automatic flush timeout 3786 if (hci_stack->automatic_flush_timeout != 0){ 3787 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3788 } 3789 3790 // restart timer 3791 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3792 btstack_run_loop_add_timer(&conn->timeout); 3793 3794 // trigger remote features for dedicated bonding 3795 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3796 hci_trigger_remote_features_for_connection(conn); 3797 } 3798 3799 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3800 3801 hci_emit_nr_connections_changed(); 3802 } else { 3803 // connection failed 3804 hci_handle_connection_failed(conn, packet[2]); 3805 } 3806 } 3807 break; 3808 3809 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3810 reverse_bd_addr(&packet[5], addr); 3811 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3812 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3813 3814 // SCO exists unless fuzzer 3815 if (conn == NULL) break; 3816 3817 if (packet[2] != ERROR_CODE_SUCCESS){ 3818 // connection failed, remove entry 3819 hci_handle_connection_failed(conn, packet[2]); 3820 break; 3821 } 3822 3823 conn->state = OPEN; 3824 conn->con_handle = little_endian_read_16(packet, 3); 3825 3826 // update sco payload length for eSCO connections 3827 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3828 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3829 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3830 } 3831 3832 #ifdef ENABLE_SCO_OVER_HCI 3833 // update SCO 3834 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3835 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3836 } 3837 // trigger can send now 3838 if (hci_have_usb_transport()){ 3839 hci_stack->sco_can_send_now = true; 3840 } 3841 3842 // setup implict sco flow control 3843 conn->sco_tx_ready = 0; 3844 conn->sco_tx_active = 0; 3845 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3846 3847 #endif 3848 #ifdef HAVE_SCO_TRANSPORT 3849 // configure sco transport 3850 if (hci_stack->sco_transport != NULL){ 3851 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3852 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3853 } 3854 #endif 3855 break; 3856 3857 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3858 handle = little_endian_read_16(packet, 3); 3859 conn = hci_connection_for_handle(handle); 3860 if (!conn) break; 3861 if (!packet[2]){ 3862 const uint8_t * features = &packet[5]; 3863 hci_handle_remote_features_page_0(conn, features); 3864 3865 // read extended features if possible 3866 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3867 && ((conn->remote_supported_features[0] & 2) != 0)) { 3868 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3869 break; 3870 } 3871 } 3872 hci_handle_remote_features_received(conn); 3873 break; 3874 3875 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3876 handle = little_endian_read_16(packet, 3); 3877 conn = hci_connection_for_handle(handle); 3878 if (!conn) break; 3879 // status = ok, page = 1 3880 if (!packet[2]) { 3881 uint8_t page_number = packet[5]; 3882 uint8_t maximum_page_number = packet[6]; 3883 const uint8_t * features = &packet[7]; 3884 bool done = false; 3885 switch (page_number){ 3886 case 1: 3887 hci_handle_remote_features_page_1(conn, features); 3888 if (maximum_page_number >= 2){ 3889 // get Secure Connections (Controller) from Page 2 if available 3890 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3891 } else { 3892 // otherwise, assume SC (Controller) == SC (Host) 3893 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3894 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3895 } 3896 done = true; 3897 } 3898 break; 3899 case 2: 3900 hci_handle_remote_features_page_2(conn, features); 3901 done = true; 3902 break; 3903 default: 3904 break; 3905 } 3906 if (!done) break; 3907 } 3908 hci_handle_remote_features_received(conn); 3909 break; 3910 3911 case HCI_EVENT_LINK_KEY_REQUEST: 3912 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3913 hci_event_link_key_request_get_bd_addr(packet, addr); 3914 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3915 if (!conn) break; 3916 3917 // lookup link key in db if not cached 3918 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3919 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3920 } 3921 3922 // response sent by hci_run() 3923 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3924 #endif 3925 break; 3926 3927 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3928 hci_event_link_key_request_get_bd_addr(packet, addr); 3929 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3930 if (!conn) break; 3931 3932 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3933 3934 // CVE-2020-26555: ignore NULL link key 3935 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3936 if (btstack_is_null(&packet[8], 16)) break; 3937 3938 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3939 // Change Connection Encryption keeps link key type 3940 if (link_key_type != CHANGED_COMBINATION_KEY){ 3941 conn->link_key_type = link_key_type; 3942 } 3943 3944 // cache link key. link keys stored in little-endian format for legacy reasons 3945 memcpy(&conn->link_key, &packet[8], 16); 3946 3947 // only store link key: 3948 // - if bondable enabled 3949 if (hci_stack->bondable == false) break; 3950 // - if security level sufficient 3951 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3952 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3953 break; 3954 } 3955 3956 case HCI_EVENT_PIN_CODE_REQUEST: 3957 hci_event_pin_code_request_get_bd_addr(packet, addr); 3958 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3959 if (!conn) break; 3960 3961 hci_pairing_started(conn, false); 3962 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3963 if (!hci_stack->bondable ){ 3964 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3965 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3966 hci_run(); 3967 return; 3968 } 3969 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3970 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3971 log_info("Level 4 required, but SC not supported -> abort"); 3972 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3973 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3974 hci_run(); 3975 return; 3976 } 3977 break; 3978 3979 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3980 hci_event_io_capability_response_get_bd_addr(packet, addr); 3981 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3982 if (!conn) break; 3983 3984 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3985 hci_pairing_started(conn, true); 3986 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3987 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3988 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3989 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3990 #endif 3991 break; 3992 3993 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3994 hci_event_io_capability_response_get_bd_addr(packet, addr); 3995 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3996 if (!conn) break; 3997 3998 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3999 hci_connection_timestamp(conn); 4000 hci_pairing_started(conn, true); 4001 break; 4002 4003 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4004 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4005 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4006 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4007 if (!conn) break; 4008 4009 hci_connection_timestamp(conn); 4010 4011 hci_pairing_started(conn, true); 4012 4013 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4014 break; 4015 #endif 4016 4017 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4018 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4019 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4020 if (!conn) break; 4021 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4022 if (hci_stack->ssp_auto_accept){ 4023 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4024 }; 4025 } else { 4026 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4027 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4028 // don't forward event to app 4029 hci_run(); 4030 return; 4031 } 4032 break; 4033 4034 case HCI_EVENT_USER_PASSKEY_REQUEST: 4035 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4036 if (hci_stack->ssp_auto_accept){ 4037 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4038 }; 4039 break; 4040 4041 case HCI_EVENT_MODE_CHANGE: 4042 handle = hci_event_mode_change_get_handle(packet); 4043 conn = hci_connection_for_handle(handle); 4044 if (!conn) break; 4045 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4046 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4047 break; 4048 #endif 4049 4050 case HCI_EVENT_ENCRYPTION_CHANGE: 4051 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4052 handle = hci_event_encryption_change_get_connection_handle(packet); 4053 conn = hci_connection_for_handle(handle); 4054 if (!conn) break; 4055 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4056 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4057 if (encryption_enabled){ 4058 if (hci_is_le_connection(conn)){ 4059 // For LE, we accept connection as encrypted 4060 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4061 } 4062 #ifdef ENABLE_CLASSIC 4063 else { 4064 4065 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4066 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4067 bool connected_uses_aes_ccm = encryption_enabled == 2; 4068 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4069 #ifdef ENABLE_TESTING_SUPPORT 4070 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4071 // - GAP/SEC/SEM/BI-31-C 4072 // - GAP/SEC/SEM/BI-32-C 4073 // - GAP/SEC/SEM/BI-33-C 4074 4075 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4076 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4077 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4078 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4079 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4080 } 4081 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4082 conn->link_key_type, new_link_key_type); 4083 conn->link_key_type = new_link_key_type; 4084 #else 4085 log_info("SC during pairing, but only E0 now -> abort"); 4086 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4087 break; 4088 #endif 4089 } 4090 4091 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4092 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4093 if (connected_uses_aes_ccm){ 4094 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4095 } 4096 #else 4097 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4098 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4099 // for all operations that require any security. See BIAS attacks. 4100 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4101 #endif 4102 // validate encryption key size 4103 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4104 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4105 // already got encryption key size 4106 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4107 } else { 4108 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4109 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4110 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4111 } else { 4112 // if not, pretend everything is perfect 4113 hci_handle_read_encryption_key_size_complete(conn, 16); 4114 } 4115 } 4116 } 4117 #endif 4118 } else { 4119 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4120 } 4121 } else { 4122 #ifdef ENABLE_CLASSIC 4123 if (!hci_is_le_connection(conn)){ 4124 uint8_t status = hci_event_encryption_change_get_status(packet); 4125 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4126 conn->bonding_flags &= ~BONDING_DEDICATED; 4127 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4128 conn->bonding_status = status; 4129 } 4130 // trigger security update -> level 0 4131 hci_handle_mutual_authentication_completed(conn); 4132 } 4133 #endif 4134 } 4135 4136 break; 4137 4138 #ifdef ENABLE_CLASSIC 4139 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4140 handle = hci_event_authentication_complete_get_connection_handle(packet); 4141 conn = hci_connection_for_handle(handle); 4142 if (!conn) break; 4143 4144 // clear authentication active flag 4145 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4146 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4147 4148 // authenticated only if auth status == 0 4149 if (hci_event_authentication_complete_get_status(packet) == 0){ 4150 // authenticated 4151 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4152 4153 // If not already encrypted, start encryption 4154 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4155 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4156 break; 4157 } 4158 } 4159 4160 // emit updated security level (will be 0 if not authenticated) 4161 hci_handle_mutual_authentication_completed(conn); 4162 break; 4163 4164 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4165 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4166 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4167 if (!conn) break; 4168 4169 // treat successfully paired connection as authenticated 4170 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4171 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4172 } 4173 4174 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4175 break; 4176 #endif 4177 4178 // HCI_EVENT_DISCONNECTION_COMPLETE 4179 // has been split, to first notify stack before shutting connection down 4180 // see end of function, too. 4181 case HCI_EVENT_DISCONNECTION_COMPLETE: 4182 if (packet[2]) break; // status != 0 4183 handle = little_endian_read_16(packet, 3); 4184 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4185 if (hci_stack->acl_fragmentation_total_size > 0u) { 4186 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4187 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4188 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4189 hci_stack->acl_fragmentation_total_size = 0; 4190 hci_stack->acl_fragmentation_pos = 0; 4191 if (release_buffer){ 4192 hci_release_packet_buffer(); 4193 hci_emit_transport_packet_sent(); 4194 } 4195 } 4196 } 4197 4198 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4199 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4200 if (hci_stack->iso_fragmentation_total_size > 0u) { 4201 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4202 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4203 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4204 hci_stack->iso_fragmentation_total_size = 0; 4205 hci_stack->iso_fragmentation_pos = 0; 4206 if (release_buffer){ 4207 hci_release_packet_buffer(); 4208 } 4209 } 4210 } 4211 4212 // finalize iso stream for CIS handle 4213 iso_stream = hci_iso_stream_for_con_handle(handle); 4214 if (iso_stream != NULL){ 4215 hci_iso_stream_finalize(iso_stream); 4216 break; 4217 } 4218 4219 // finalize iso stream(s) for ACL handle 4220 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4221 while (btstack_linked_list_iterator_has_next(&it)){ 4222 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4223 if (iso_stream->acl_handle == handle ) { 4224 hci_iso_stream_finalize(iso_stream); 4225 } 4226 } 4227 #endif 4228 4229 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4230 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4231 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4232 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4233 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4234 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4235 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4236 hci_stack->num_cmd_packets = 1; 4237 } 4238 #endif 4239 4240 conn = hci_connection_for_handle(handle); 4241 if (!conn) break; 4242 #ifdef ENABLE_CLASSIC 4243 // pairing failed if it was ongoing 4244 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4245 #endif 4246 4247 // emit dedicatd bonding event 4248 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4249 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4250 } 4251 4252 // mark connection for shutdown, stop timers, reset state 4253 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4254 hci_connection_stop_timer(conn); 4255 hci_connection_init(conn); 4256 4257 #ifdef ENABLE_BLE 4258 #ifdef ENABLE_LE_PERIPHERAL 4259 // re-enable advertisements for le connections if active 4260 if (hci_is_le_connection(conn)){ 4261 hci_update_advertisements_enabled_for_current_roles(); 4262 } 4263 #endif 4264 #endif 4265 break; 4266 4267 case HCI_EVENT_HARDWARE_ERROR: 4268 log_error("Hardware Error: 0x%02x", packet[2]); 4269 if (hci_stack->hardware_error_callback){ 4270 (*hci_stack->hardware_error_callback)(packet[2]); 4271 } else { 4272 // if no special requests, just reboot stack 4273 hci_power_control_off(); 4274 hci_power_control_on(); 4275 } 4276 break; 4277 4278 #ifdef ENABLE_CLASSIC 4279 case HCI_EVENT_ROLE_CHANGE: 4280 if (packet[2]) break; // status != 0 4281 reverse_bd_addr(&packet[3], addr); 4282 addr_type = BD_ADDR_TYPE_ACL; 4283 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4284 if (!conn) break; 4285 conn->role = (hci_role_t) packet[9]; 4286 break; 4287 #endif 4288 4289 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4290 // release packet buffer only for asynchronous transport and if there are not further fragments 4291 if (hci_transport_synchronous()) { 4292 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4293 return; // instead of break: to avoid re-entering hci_run() 4294 } 4295 hci_stack->acl_fragmentation_tx_active = 0; 4296 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4297 hci_stack->iso_fragmentation_tx_active = 0; 4298 if (hci_stack->iso_fragmentation_total_size) break; 4299 #endif 4300 if (hci_stack->acl_fragmentation_total_size) break; 4301 hci_release_packet_buffer(); 4302 4303 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4304 hci_iso_notify_can_send_now(); 4305 #endif 4306 // L2CAP receives this event via the hci_emit_event below 4307 4308 #ifdef ENABLE_CLASSIC 4309 // For SCO, we do the can_send_now_check here 4310 hci_notify_if_sco_can_send_now(); 4311 #endif 4312 break; 4313 4314 #ifdef ENABLE_CLASSIC 4315 case HCI_EVENT_SCO_CAN_SEND_NOW: 4316 // For SCO, we do the can_send_now_check here 4317 hci_stack->sco_can_send_now = true; 4318 hci_notify_if_sco_can_send_now(); 4319 return; 4320 4321 // explode inquriy results for easier consumption 4322 case HCI_EVENT_INQUIRY_RESULT: 4323 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4324 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4325 gap_inquiry_explode(packet, size); 4326 break; 4327 #endif 4328 4329 #ifdef ENABLE_BLE 4330 case HCI_EVENT_LE_META: 4331 switch (packet[2]){ 4332 #ifdef ENABLE_LE_CENTRAL 4333 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4334 if (!hci_stack->le_scanning_enabled) break; 4335 le_handle_advertisement_report(packet, size); 4336 break; 4337 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4338 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4339 if (!hci_stack->le_scanning_enabled) break; 4340 le_handle_extended_advertisement_report(packet, size); 4341 break; 4342 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4343 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4344 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4345 break; 4346 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4347 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4348 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4349 while (btstack_linked_list_iterator_has_next(&it)) { 4350 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4351 if (advertising_set->advertising_handle == advertising_handle){ 4352 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4353 } 4354 } 4355 break; 4356 #endif 4357 #endif 4358 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4359 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4360 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4361 hci_handle_le_connection_complete_event(packet); 4362 break; 4363 4364 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4365 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4366 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4367 conn = hci_connection_for_handle(handle); 4368 if (!conn) break; 4369 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4370 break; 4371 4372 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4373 // connection 4374 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4375 conn = hci_connection_for_handle(handle); 4376 if (conn) { 4377 // read arguments 4378 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4379 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4380 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4381 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4382 4383 // validate against current connection parameter range 4384 le_connection_parameter_range_t existing_range; 4385 gap_get_connection_parameter_range(&existing_range); 4386 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4387 if (update_parameter){ 4388 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4389 conn->le_conn_interval_min = le_conn_interval_min; 4390 conn->le_conn_interval_max = le_conn_interval_max; 4391 conn->le_conn_latency = le_conn_latency; 4392 conn->le_supervision_timeout = le_supervision_timeout; 4393 } else { 4394 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4395 } 4396 } 4397 break; 4398 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4399 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4400 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4401 conn = hci_connection_for_handle(handle); 4402 if (conn) { 4403 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4404 } 4405 break; 4406 #endif 4407 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4408 case HCI_SUBEVENT_LE_CIS_REQUEST: 4409 // incoming CIS request, allocate iso stream object and cache metadata 4410 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4411 hci_subevent_le_cis_request_get_cig_id(packet), 4412 hci_subevent_le_cis_request_get_cis_id(packet)); 4413 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4414 if (iso_stream != NULL){ 4415 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4416 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4417 } 4418 break; 4419 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4420 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4421 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4422 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4423 iso_stream = hci_iso_stream_for_con_handle(handle); 4424 btstack_assert(iso_stream != NULL); 4425 // track connection info 4426 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4427 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4428 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4429 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4430 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4431 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4432 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4433 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4434 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4435 // CIS Accept by Peripheral 4436 if (status == ERROR_CODE_SUCCESS){ 4437 if (iso_stream->max_sdu_p_to_c > 0){ 4438 // we're peripheral and we will send data 4439 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4440 } else { 4441 // we're peripheral and we will only receive data 4442 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4443 } 4444 } else { 4445 hci_cis_handle_created(iso_stream, status); 4446 } 4447 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4448 } else { 4449 // CIG Setup by Central 4450 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4451 btstack_assert(cig != NULL); 4452 // update iso stream state 4453 if (status == ERROR_CODE_SUCCESS){ 4454 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4455 } else { 4456 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4457 } 4458 // update cig state 4459 uint8_t i; 4460 for (i=0;i<cig->num_cis;i++){ 4461 if (cig->cis_con_handles[i] == handle){ 4462 cig->cis_setup_active[i] = false; 4463 if (status == ERROR_CODE_SUCCESS){ 4464 cig->cis_established[i] = true; 4465 } else { 4466 hci_cis_handle_created(iso_stream, status); 4467 } 4468 } 4469 } 4470 4471 // trigger iso path setup if complete 4472 bool cis_setup_active = false; 4473 for (i=0;i<cig->num_cis;i++){ 4474 cis_setup_active |= cig->cis_setup_active[i]; 4475 } 4476 if (cis_setup_active == false){ 4477 cig->state_vars.next_cis = 0; 4478 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4479 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4480 } 4481 } 4482 } 4483 break; 4484 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4485 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4486 big = hci_big_for_handle(packet[4]); 4487 if (big != NULL){ 4488 uint8_t status = packet[3]; 4489 if (status == ERROR_CODE_SUCCESS){ 4490 // store bis_con_handles and trigger iso path setup 4491 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4492 uint8_t i; 4493 for (i=0;i<num_bis;i++){ 4494 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4495 big->bis_con_handles[i] = bis_handle; 4496 // assign bis handle 4497 btstack_linked_list_iterator_t it; 4498 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4499 while (btstack_linked_list_iterator_has_next(&it)){ 4500 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4501 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4502 (iso_stream->group_id == big->big_handle)){ 4503 iso_stream->cis_handle = bis_handle; 4504 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4505 break; 4506 } 4507 } 4508 } 4509 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4510 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4511 big->state_vars.next_bis = 0; 4512 } 4513 } else { 4514 // create BIG failed or has been stopped by us 4515 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4516 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4517 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4518 hci_emit_big_created(big, status); 4519 } else { 4520 hci_emit_big_terminated(big); 4521 } 4522 } 4523 } 4524 break; 4525 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4526 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4527 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4528 if (big != NULL){ 4529 // finalize associated ISO streams 4530 btstack_linked_list_iterator_t it; 4531 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4532 while (btstack_linked_list_iterator_has_next(&it)){ 4533 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4534 if (iso_stream->group_id == big->big_handle){ 4535 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4536 btstack_linked_list_iterator_remove(&it); 4537 btstack_memory_hci_iso_stream_free(iso_stream); 4538 } 4539 } 4540 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4541 switch (big->state){ 4542 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4543 hci_emit_big_created(big, big->state_vars.status); 4544 break; 4545 default: 4546 hci_emit_big_terminated(big); 4547 break; 4548 } 4549 } 4550 break; 4551 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4552 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4553 big_sync = hci_big_sync_for_handle(packet[4]); 4554 if (big_sync != NULL){ 4555 uint8_t status = packet[3]; 4556 uint8_t big_handle = packet[4]; 4557 if (status == ERROR_CODE_SUCCESS){ 4558 // store bis_con_handles and trigger iso path setup 4559 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4560 uint8_t i; 4561 for (i=0;i<num_bis;i++){ 4562 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4563 big_sync->bis_con_handles[i] = bis_handle; 4564 // setup iso_stream_t 4565 btstack_linked_list_iterator_t it; 4566 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4567 while (btstack_linked_list_iterator_has_next(&it)){ 4568 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4569 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4570 (iso_stream->group_id == big_sync->big_handle)){ 4571 iso_stream->cis_handle = bis_handle; 4572 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4573 break; 4574 } 4575 } 4576 } 4577 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4578 // trigger iso path setup 4579 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4580 big_sync->state_vars.next_bis = 0; 4581 } 4582 } else { 4583 // create BIG Sync failed or has been stopped by us 4584 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4585 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4586 hci_emit_big_sync_created(big_sync, status); 4587 } else { 4588 hci_emit_big_sync_stopped(big_handle); 4589 } 4590 } 4591 } 4592 break; 4593 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4594 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4595 big_sync = hci_big_sync_for_handle(packet[4]); 4596 if (big_sync != NULL){ 4597 uint8_t big_handle = packet[4]; 4598 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4599 hci_emit_big_sync_stopped(big_handle); 4600 } 4601 break; 4602 #endif 4603 default: 4604 break; 4605 } 4606 break; 4607 #endif 4608 case HCI_EVENT_VENDOR_SPECIFIC: 4609 // Vendor specific commands often create vendor specific event instead of num completed packets 4610 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4611 switch (hci_stack->manufacturer){ 4612 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4613 hci_stack->num_cmd_packets = 1; 4614 break; 4615 default: 4616 break; 4617 } 4618 break; 4619 default: 4620 break; 4621 } 4622 4623 handle_event_for_current_stack_state(packet, size); 4624 4625 // notify upper stack 4626 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4627 4628 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4629 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4630 handle = little_endian_read_16(packet, 3); 4631 hci_connection_t * aConn = hci_connection_for_handle(handle); 4632 // discard connection if app did not trigger a reconnect in the event handler 4633 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4634 hci_shutdown_connection(aConn); 4635 } 4636 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4637 hci_controller_dump_packets(); 4638 #endif 4639 } 4640 4641 // execute main loop 4642 hci_run(); 4643 } 4644 4645 #ifdef ENABLE_CLASSIC 4646 4647 static void sco_handler(uint8_t * packet, uint16_t size){ 4648 // lookup connection struct 4649 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4650 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4651 if (!conn) return; 4652 4653 #ifdef ENABLE_SCO_OVER_HCI 4654 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4655 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4656 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4657 packet[2] = 0x3c; 4658 memmove(&packet[3], &packet[23], 63); 4659 size = 63; 4660 } 4661 } 4662 4663 if (hci_have_usb_transport()){ 4664 // Nothing to do 4665 } else { 4666 // 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); 4667 if (hci_stack->synchronous_flow_control_enabled == 0){ 4668 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4669 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4670 if (conn->sco_tx_active == 0){ 4671 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4672 conn->sco_tx_active = 1; 4673 conn->sco_tx_ready = max_sco_packets; 4674 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4675 hci_notify_if_sco_can_send_now(); 4676 } 4677 } else { 4678 if (conn->sco_tx_ready < max_sco_packets){ 4679 conn->sco_tx_ready++; 4680 } 4681 hci_notify_if_sco_can_send_now(); 4682 } 4683 } 4684 } 4685 #endif 4686 4687 // deliver to app 4688 if (hci_stack->sco_packet_handler) { 4689 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4690 } 4691 4692 #ifdef HAVE_SCO_TRANSPORT 4693 // We can send one packet for each received packet 4694 conn->sco_tx_ready++; 4695 hci_notify_if_sco_can_send_now(); 4696 #endif 4697 4698 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4699 conn->num_packets_completed++; 4700 hci_stack->host_completed_packets = 1; 4701 hci_run(); 4702 #endif 4703 } 4704 #endif 4705 4706 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4707 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4708 // propagate ISO packets received as ACL 4709 hci_iso_stream_t * iso_stream = NULL; 4710 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4711 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4712 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4713 if (iso_stream != NULL){ 4714 packet_type = HCI_ISO_DATA_PACKET; 4715 } 4716 } 4717 #endif 4718 4719 hci_dump_packet(packet_type, 1, packet, size); 4720 switch (packet_type) { 4721 case HCI_EVENT_PACKET: 4722 event_handler(packet, size); 4723 break; 4724 case HCI_ACL_DATA_PACKET: 4725 acl_handler(packet, size); 4726 break; 4727 #ifdef ENABLE_CLASSIC 4728 case HCI_SCO_DATA_PACKET: 4729 sco_handler(packet, size); 4730 break; 4731 #endif 4732 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4733 case HCI_ISO_DATA_PACKET: 4734 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4735 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4736 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4737 } 4738 hci_iso_packet_handler(iso_stream, packet, size); 4739 break; 4740 #endif 4741 default: 4742 break; 4743 } 4744 } 4745 4746 /** 4747 * @brief Add event packet handler. 4748 */ 4749 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4750 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4751 } 4752 4753 /** 4754 * @brief Remove event packet handler. 4755 */ 4756 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4757 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4758 } 4759 4760 /** Register HCI packet handlers */ 4761 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4762 hci_stack->acl_packet_handler = handler; 4763 } 4764 4765 #ifdef ENABLE_CLASSIC 4766 /** 4767 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4768 */ 4769 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4770 hci_stack->sco_packet_handler = handler; 4771 } 4772 #endif 4773 4774 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4775 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4776 hci_stack->iso_packet_handler = handler; 4777 } 4778 #endif 4779 4780 static void hci_state_reset(void){ 4781 // no connections yet 4782 hci_stack->connections = NULL; 4783 4784 // keep discoverable/connectable as this has been requested by the client(s) 4785 // hci_stack->discoverable = 0; 4786 // hci_stack->connectable = 0; 4787 // hci_stack->bondable = 1; 4788 // hci_stack->own_addr_type = 0; 4789 4790 // buffer is free 4791 hci_stack->hci_packet_buffer_reserved = false; 4792 4793 // no pending cmds 4794 hci_stack->decline_reason = 0; 4795 4796 hci_stack->secure_connections_active = false; 4797 4798 #ifdef ENABLE_CLASSIC 4799 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4800 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4801 4802 hci_stack->gap_tasks_classic = 4803 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4804 GAP_TASK_SET_CLASS_OF_DEVICE | 4805 GAP_TASK_SET_LOCAL_NAME | 4806 GAP_TASK_SET_EIR_DATA | 4807 GAP_TASK_WRITE_SCAN_ENABLE | 4808 GAP_TASK_WRITE_PAGE_TIMEOUT; 4809 #endif 4810 4811 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4812 hci_stack->classic_read_local_oob_data = false; 4813 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4814 #endif 4815 4816 // LE 4817 #ifdef ENABLE_BLE 4818 memset(hci_stack->le_random_address, 0, 6); 4819 hci_stack->le_random_address_set = 0; 4820 #endif 4821 #ifdef ENABLE_LE_CENTRAL 4822 hci_stack->le_scanning_active = false; 4823 hci_stack->le_scanning_param_update = true; 4824 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4825 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4826 hci_stack->le_whitelist_capacity = 0; 4827 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4828 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4829 #endif 4830 #endif 4831 #ifdef ENABLE_LE_PERIPHERAL 4832 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4833 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4834 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4835 } 4836 if (hci_stack->le_advertisements_data != NULL){ 4837 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4838 } 4839 #endif 4840 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4841 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4842 #endif 4843 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4844 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4845 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4846 #endif 4847 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4848 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4849 #endif 4850 } 4851 4852 #ifdef ENABLE_CLASSIC 4853 /** 4854 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4855 */ 4856 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4857 // store and open remote device db 4858 hci_stack->link_key_db = link_key_db; 4859 if (hci_stack->link_key_db) { 4860 hci_stack->link_key_db->open(); 4861 } 4862 } 4863 #endif 4864 4865 void hci_init(const hci_transport_t *transport, const void *config){ 4866 4867 #ifdef HAVE_MALLOC 4868 if (!hci_stack) { 4869 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4870 } 4871 #else 4872 hci_stack = &hci_stack_static; 4873 #endif 4874 memset(hci_stack, 0, sizeof(hci_stack_t)); 4875 4876 // reference to use transport layer implementation 4877 hci_stack->hci_transport = transport; 4878 4879 // reference to used config 4880 hci_stack->config = config; 4881 4882 // setup pointer for outgoing packet buffer 4883 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4884 4885 // max acl payload size defined in config.h 4886 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4887 4888 // register packet handlers with transport 4889 transport->register_packet_handler(&packet_handler); 4890 4891 hci_stack->state = HCI_STATE_OFF; 4892 4893 // class of device 4894 hci_stack->class_of_device = 0x007a020c; // Smartphone 4895 4896 // bondable by default 4897 hci_stack->bondable = 1; 4898 4899 #ifdef ENABLE_CLASSIC 4900 // classic name 4901 hci_stack->local_name = default_classic_name; 4902 4903 // Master slave policy 4904 hci_stack->master_slave_policy = 1; 4905 4906 // Allow Role Switch 4907 hci_stack->allow_role_switch = 1; 4908 4909 // Default / minimum security level = 2 4910 hci_stack->gap_security_level = LEVEL_2; 4911 4912 // Default Security Mode 4 4913 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4914 4915 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4916 hci_stack->gap_required_encyrption_key_size = 7; 4917 4918 // Link Supervision Timeout 4919 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4920 4921 // All ACL packet types are enabledh 4922 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4923 #endif 4924 4925 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4926 hci_stack->ssp_enable = 1; 4927 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4928 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4929 hci_stack->ssp_auto_accept = 1; 4930 4931 // Secure Connections: enable (requires support from Controller) 4932 hci_stack->secure_connections_enable = true; 4933 4934 // voice setting - signed 16 bit pcm data with CVSD over the air 4935 hci_stack->sco_voice_setting = 0x60; 4936 4937 #ifdef ENABLE_BLE 4938 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4939 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4940 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4941 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4942 hci_stack->le_connection_latency = 4; // 4 4943 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4944 hci_stack->le_minimum_ce_length = 0; // 0 ms 4945 hci_stack->le_maximum_ce_length = 0; // 0 ms 4946 #endif 4947 4948 #ifdef ENABLE_LE_CENTRAL 4949 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4950 4951 // default LE Scanning 4952 hci_stack->le_scan_type = 0x01; // active 4953 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4954 hci_stack->le_scan_window = 0x30; // 30 ms 4955 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4956 #endif 4957 4958 #ifdef ENABLE_LE_PERIPHERAL 4959 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4960 4961 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4962 hci_stack->le_advertisements_interval_min = 0x0800; 4963 hci_stack->le_advertisements_interval_max = 0x0800; 4964 hci_stack->le_advertisements_type = 0; 4965 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4966 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4967 hci_stack->le_advertisements_channel_map = 0x07; 4968 hci_stack->le_advertisements_filter_policy = 0; 4969 #endif 4970 4971 // connection parameter range used to answer connection parameter update requests in l2cap 4972 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4973 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4974 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4975 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4976 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4977 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4978 4979 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4980 hci_stack->iso_packets_to_queue = 1; 4981 #endif 4982 4983 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4984 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4985 #endif 4986 4987 hci_state_reset(); 4988 } 4989 4990 void hci_deinit(void){ 4991 btstack_run_loop_remove_timer(&hci_stack->timeout); 4992 #ifdef HAVE_MALLOC 4993 if (hci_stack) { 4994 free(hci_stack); 4995 } 4996 #endif 4997 hci_stack = NULL; 4998 4999 #ifdef ENABLE_CLASSIC 5000 disable_l2cap_timeouts = 0; 5001 #endif 5002 } 5003 5004 /** 5005 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5006 */ 5007 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5008 hci_stack->chipset = chipset_driver; 5009 5010 // reset chipset driver - init is also called on power_up 5011 if (hci_stack->chipset && hci_stack->chipset->init){ 5012 hci_stack->chipset->init(hci_stack->config); 5013 } 5014 } 5015 5016 void hci_enable_custom_pre_init(void){ 5017 hci_stack->chipset_pre_init = true; 5018 } 5019 5020 /** 5021 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5022 */ 5023 void hci_set_control(const btstack_control_t *hardware_control){ 5024 // references to used control implementation 5025 hci_stack->control = hardware_control; 5026 // init with transport config 5027 hardware_control->init(hci_stack->config); 5028 } 5029 5030 static void hci_discard_connections(void){ 5031 btstack_linked_list_iterator_t it; 5032 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5033 while (btstack_linked_list_iterator_has_next(&it)){ 5034 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5035 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5036 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5037 hci_shutdown_connection(connection); 5038 } 5039 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5040 while (hci_stack->iso_streams != NULL){ 5041 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5042 } 5043 #endif 5044 } 5045 5046 void hci_close(void){ 5047 5048 #ifdef ENABLE_CLASSIC 5049 // close remote device db 5050 if (hci_stack->link_key_db) { 5051 hci_stack->link_key_db->close(); 5052 } 5053 #endif 5054 5055 hci_discard_connections(); 5056 5057 hci_power_control(HCI_POWER_OFF); 5058 5059 #ifdef HAVE_MALLOC 5060 free(hci_stack); 5061 #endif 5062 hci_stack = NULL; 5063 } 5064 5065 #ifdef HAVE_SCO_TRANSPORT 5066 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5067 hci_stack->sco_transport = sco_transport; 5068 sco_transport->register_packet_handler(&packet_handler); 5069 } 5070 #endif 5071 5072 #ifdef ENABLE_CLASSIC 5073 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5074 // validate ranage and set 5075 if (encryption_key_size < 7) return; 5076 if (encryption_key_size > 16) return; 5077 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5078 } 5079 5080 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5081 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5082 hci_stack->gap_security_mode = security_mode; 5083 return ERROR_CODE_SUCCESS; 5084 } else { 5085 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5086 } 5087 } 5088 5089 gap_security_mode_t gap_get_security_mode(void){ 5090 return hci_stack->gap_security_mode; 5091 } 5092 5093 void gap_set_security_level(gap_security_level_t security_level){ 5094 hci_stack->gap_security_level = security_level; 5095 } 5096 5097 gap_security_level_t gap_get_security_level(void){ 5098 if (hci_stack->gap_secure_connections_only_mode){ 5099 return LEVEL_4; 5100 } 5101 return hci_stack->gap_security_level; 5102 } 5103 5104 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5105 hci_stack->gap_minimal_service_security_level = security_level; 5106 } 5107 5108 void gap_set_secure_connections_only_mode(bool enable){ 5109 hci_stack->gap_secure_connections_only_mode = enable; 5110 } 5111 5112 bool gap_get_secure_connections_only_mode(void){ 5113 return hci_stack->gap_secure_connections_only_mode; 5114 } 5115 #endif 5116 5117 #ifdef ENABLE_CLASSIC 5118 void gap_set_class_of_device(uint32_t class_of_device){ 5119 hci_stack->class_of_device = class_of_device; 5120 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5121 hci_run(); 5122 } 5123 5124 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5125 hci_stack->default_link_policy_settings = default_link_policy_settings; 5126 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5127 hci_run(); 5128 } 5129 5130 void gap_set_allow_role_switch(bool allow_role_switch){ 5131 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5132 } 5133 5134 uint8_t hci_get_allow_role_switch(void){ 5135 return hci_stack->allow_role_switch; 5136 } 5137 5138 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5139 hci_stack->link_supervision_timeout = link_supervision_timeout; 5140 } 5141 5142 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5143 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5144 } 5145 5146 uint16_t hci_automatic_flush_timeout(void){ 5147 return hci_stack->automatic_flush_timeout; 5148 } 5149 5150 void hci_disable_l2cap_timeout_check(void){ 5151 disable_l2cap_timeouts = 1; 5152 } 5153 #endif 5154 5155 #ifndef HAVE_HOST_CONTROLLER_API 5156 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5157 void hci_set_bd_addr(bd_addr_t addr){ 5158 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5159 hci_stack->custom_bd_addr_set = 1; 5160 } 5161 #endif 5162 5163 // State-Module-Driver overview 5164 // state module low-level 5165 // HCI_STATE_OFF off close 5166 // HCI_STATE_INITIALIZING, on open 5167 // HCI_STATE_WORKING, on open 5168 // HCI_STATE_HALTING, on open 5169 // HCI_STATE_SLEEPING, off/sleep close 5170 // HCI_STATE_FALLING_ASLEEP on open 5171 5172 static int hci_power_control_on(void){ 5173 5174 // power on 5175 int err = 0; 5176 if (hci_stack->control && hci_stack->control->on){ 5177 err = (*hci_stack->control->on)(); 5178 } 5179 if (err){ 5180 log_error( "POWER_ON failed"); 5181 hci_emit_hci_open_failed(); 5182 return err; 5183 } 5184 5185 // int chipset driver 5186 if (hci_stack->chipset && hci_stack->chipset->init){ 5187 hci_stack->chipset->init(hci_stack->config); 5188 } 5189 5190 // init transport 5191 if (hci_stack->hci_transport->init){ 5192 hci_stack->hci_transport->init(hci_stack->config); 5193 } 5194 5195 // open transport 5196 err = hci_stack->hci_transport->open(); 5197 if (err){ 5198 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5199 if (hci_stack->control && hci_stack->control->off){ 5200 (*hci_stack->control->off)(); 5201 } 5202 hci_emit_hci_open_failed(); 5203 return err; 5204 } 5205 return 0; 5206 } 5207 5208 static void hci_power_control_off(void){ 5209 5210 log_info("hci_power_control_off"); 5211 5212 // close low-level device 5213 hci_stack->hci_transport->close(); 5214 5215 log_info("hci_power_control_off - hci_transport closed"); 5216 5217 // power off 5218 if (hci_stack->control && hci_stack->control->off){ 5219 (*hci_stack->control->off)(); 5220 } 5221 5222 log_info("hci_power_control_off - control closed"); 5223 5224 hci_stack->state = HCI_STATE_OFF; 5225 } 5226 5227 static void hci_power_control_sleep(void){ 5228 5229 log_info("hci_power_control_sleep"); 5230 5231 #if 0 5232 // don't close serial port during sleep 5233 5234 // close low-level device 5235 hci_stack->hci_transport->close(hci_stack->config); 5236 #endif 5237 5238 // sleep mode 5239 if (hci_stack->control && hci_stack->control->sleep){ 5240 (*hci_stack->control->sleep)(); 5241 } 5242 5243 hci_stack->state = HCI_STATE_SLEEPING; 5244 } 5245 5246 static int hci_power_control_wake(void){ 5247 5248 log_info("hci_power_control_wake"); 5249 5250 // wake on 5251 if (hci_stack->control && hci_stack->control->wake){ 5252 (*hci_stack->control->wake)(); 5253 } 5254 5255 #if 0 5256 // open low-level device 5257 int err = hci_stack->hci_transport->open(hci_stack->config); 5258 if (err){ 5259 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5260 if (hci_stack->control && hci_stack->control->off){ 5261 (*hci_stack->control->off)(); 5262 } 5263 hci_emit_hci_open_failed(); 5264 return err; 5265 } 5266 #endif 5267 5268 return 0; 5269 } 5270 5271 static void hci_power_enter_initializing_state(void){ 5272 // set up state machine 5273 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5274 hci_stack->hci_packet_buffer_reserved = false; 5275 hci_stack->state = HCI_STATE_INITIALIZING; 5276 5277 #ifndef HAVE_HOST_CONTROLLER_API 5278 if (hci_stack->chipset_pre_init) { 5279 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5280 } else 5281 #endif 5282 { 5283 hci_stack->substate = HCI_INIT_SEND_RESET; 5284 } 5285 } 5286 5287 static void hci_power_enter_halting_state(void){ 5288 #ifdef ENABLE_BLE 5289 // drop entries scheduled for removal, mark others for re-adding 5290 btstack_linked_list_iterator_t it; 5291 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5292 while (btstack_linked_list_iterator_has_next(&it)){ 5293 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5294 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5295 btstack_linked_list_iterator_remove(&it); 5296 btstack_memory_whitelist_entry_free(entry); 5297 } else { 5298 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5299 } 5300 } 5301 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5302 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5303 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5304 while (btstack_linked_list_iterator_has_next(&it)){ 5305 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5306 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5307 btstack_linked_list_iterator_remove(&it); 5308 btstack_memory_periodic_advertiser_list_entry_free(entry); 5309 } else { 5310 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5311 continue; 5312 } 5313 } 5314 #endif 5315 #endif 5316 // see hci_run 5317 hci_stack->state = HCI_STATE_HALTING; 5318 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5319 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5320 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5321 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5322 btstack_run_loop_add_timer(&hci_stack->timeout); 5323 } 5324 5325 // returns error 5326 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5327 int err; 5328 switch (power_mode){ 5329 case HCI_POWER_ON: 5330 err = hci_power_control_on(); 5331 if (err != 0) { 5332 log_error("hci_power_control_on() error %d", err); 5333 return err; 5334 } 5335 hci_power_enter_initializing_state(); 5336 break; 5337 case HCI_POWER_OFF: 5338 // do nothing 5339 break; 5340 case HCI_POWER_SLEEP: 5341 // do nothing (with SLEEP == OFF) 5342 break; 5343 default: 5344 btstack_assert(false); 5345 break; 5346 } 5347 return ERROR_CODE_SUCCESS; 5348 } 5349 5350 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5351 switch (power_mode){ 5352 case HCI_POWER_ON: 5353 // do nothing 5354 break; 5355 case HCI_POWER_OFF: 5356 // no connections yet, just turn it off 5357 hci_power_control_off(); 5358 break; 5359 case HCI_POWER_SLEEP: 5360 // no connections yet, just turn it off 5361 hci_power_control_sleep(); 5362 break; 5363 default: 5364 btstack_assert(false); 5365 break; 5366 } 5367 return ERROR_CODE_SUCCESS; 5368 } 5369 5370 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5371 switch (power_mode){ 5372 case HCI_POWER_ON: 5373 // do nothing 5374 break; 5375 case HCI_POWER_OFF: 5376 hci_power_enter_halting_state(); 5377 break; 5378 case HCI_POWER_SLEEP: 5379 // see hci_run 5380 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5381 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5382 break; 5383 default: 5384 btstack_assert(false); 5385 break; 5386 } 5387 return ERROR_CODE_SUCCESS; 5388 } 5389 5390 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5391 switch (power_mode){ 5392 case HCI_POWER_ON: 5393 hci_power_enter_initializing_state(); 5394 break; 5395 case HCI_POWER_OFF: 5396 // do nothing 5397 break; 5398 case HCI_POWER_SLEEP: 5399 // see hci_run 5400 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5401 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5402 break; 5403 default: 5404 btstack_assert(false); 5405 break; 5406 } 5407 return ERROR_CODE_SUCCESS; 5408 } 5409 5410 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5411 switch (power_mode){ 5412 case HCI_POWER_ON: 5413 hci_power_enter_initializing_state(); 5414 break; 5415 case HCI_POWER_OFF: 5416 hci_power_enter_halting_state(); 5417 break; 5418 case HCI_POWER_SLEEP: 5419 // do nothing 5420 break; 5421 default: 5422 btstack_assert(false); 5423 break; 5424 } 5425 return ERROR_CODE_SUCCESS; 5426 } 5427 5428 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5429 int err; 5430 switch (power_mode){ 5431 case HCI_POWER_ON: 5432 err = hci_power_control_wake(); 5433 if (err) return err; 5434 hci_power_enter_initializing_state(); 5435 break; 5436 case HCI_POWER_OFF: 5437 hci_power_enter_halting_state(); 5438 break; 5439 case HCI_POWER_SLEEP: 5440 // do nothing 5441 break; 5442 default: 5443 btstack_assert(false); 5444 break; 5445 } 5446 return ERROR_CODE_SUCCESS; 5447 } 5448 5449 int hci_power_control(HCI_POWER_MODE power_mode){ 5450 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5451 btstack_run_loop_remove_timer(&hci_stack->timeout); 5452 int err = 0; 5453 switch (hci_stack->state){ 5454 case HCI_STATE_OFF: 5455 err = hci_power_control_state_off(power_mode); 5456 break; 5457 case HCI_STATE_INITIALIZING: 5458 err = hci_power_control_state_initializing(power_mode); 5459 break; 5460 case HCI_STATE_WORKING: 5461 err = hci_power_control_state_working(power_mode); 5462 break; 5463 case HCI_STATE_HALTING: 5464 err = hci_power_control_state_halting(power_mode); 5465 break; 5466 case HCI_STATE_FALLING_ASLEEP: 5467 err = hci_power_control_state_falling_asleep(power_mode); 5468 break; 5469 case HCI_STATE_SLEEPING: 5470 err = hci_power_control_state_sleeping(power_mode); 5471 break; 5472 default: 5473 btstack_assert(false); 5474 break; 5475 } 5476 if (err != 0){ 5477 return err; 5478 } 5479 5480 // create internal event 5481 hci_emit_state(); 5482 5483 // trigger next/first action 5484 hci_run(); 5485 5486 return 0; 5487 } 5488 5489 5490 static void hci_halting_run(void) { 5491 5492 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5493 5494 hci_connection_t *connection; 5495 #ifdef ENABLE_BLE 5496 #ifdef ENABLE_LE_PERIPHERAL 5497 bool stop_advertismenets; 5498 #endif 5499 #endif 5500 5501 switch (hci_stack->substate) { 5502 case HCI_HALTING_CLASSIC_STOP: 5503 #ifdef ENABLE_CLASSIC 5504 if (!hci_can_send_command_packet_now()) return; 5505 5506 if (hci_stack->connectable || hci_stack->discoverable){ 5507 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5508 hci_send_cmd(&hci_write_scan_enable, 0); 5509 return; 5510 } 5511 #endif 5512 /* fall through */ 5513 5514 case HCI_HALTING_LE_ADV_STOP: 5515 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5516 5517 #ifdef ENABLE_BLE 5518 #ifdef ENABLE_LE_PERIPHERAL 5519 if (!hci_can_send_command_packet_now()) return; 5520 5521 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5522 5523 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5524 if (hci_le_extended_advertising_supported()){ 5525 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5526 btstack_linked_list_iterator_t it; 5527 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5528 // stop all periodic advertisements and check if an extended set is active 5529 while (btstack_linked_list_iterator_has_next(&it)){ 5530 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5531 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5532 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5533 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5534 return; 5535 } 5536 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5537 stop_advertismenets = true; 5538 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5539 } 5540 } 5541 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5542 if (stop_advertismenets){ 5543 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5544 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5545 return; 5546 } 5547 } else 5548 #else /* ENABLE_LE_PERIPHERAL */ 5549 { 5550 if (stop_advertismenets) { 5551 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5552 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5553 return; 5554 } 5555 } 5556 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5557 #endif /* ENABLE_LE_PERIPHERAL */ 5558 #endif /* ENABLE_BLE */ 5559 5560 /* fall through */ 5561 5562 case HCI_HALTING_LE_SCAN_STOP: 5563 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5564 if (!hci_can_send_command_packet_now()) return; 5565 5566 #ifdef ENABLE_BLE 5567 #ifdef ENABLE_LE_CENTRAL 5568 if (hci_stack->le_scanning_active){ 5569 hci_le_scan_stop(); 5570 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5571 return; 5572 } 5573 #endif 5574 #endif 5575 5576 /* fall through */ 5577 5578 case HCI_HALTING_DISCONNECT_ALL: 5579 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5580 if (!hci_can_send_command_packet_now()) return; 5581 5582 // close all open connections 5583 connection = (hci_connection_t *) hci_stack->connections; 5584 if (connection) { 5585 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5586 5587 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5588 5589 // check state 5590 switch(connection->state) { 5591 case SENT_DISCONNECT: 5592 case RECEIVED_DISCONNECTION_COMPLETE: 5593 // wait until connection is gone 5594 return; 5595 default: 5596 break; 5597 } 5598 5599 // finally, send the disconnect command 5600 connection->state = SENT_DISCONNECT; 5601 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5602 return; 5603 } 5604 5605 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5606 // stop BIGs and BIG Syncs 5607 if (hci_stack->le_audio_bigs != NULL){ 5608 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5609 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5610 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5611 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5612 return; 5613 } 5614 if (hci_stack->le_audio_big_syncs != NULL){ 5615 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5616 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5617 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5618 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5619 return; 5620 } 5621 #endif 5622 5623 btstack_run_loop_remove_timer(&hci_stack->timeout); 5624 5625 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5626 log_info("HCI_STATE_HALTING: wait 50 ms"); 5627 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5628 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5629 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5630 btstack_run_loop_add_timer(&hci_stack->timeout); 5631 break; 5632 5633 case HCI_HALTING_W4_CLOSE_TIMER: 5634 // keep waiting 5635 break; 5636 5637 case HCI_HALTING_CLOSE: 5638 // close left over connections (that had not been properly closed before) 5639 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5640 hci_discard_connections(); 5641 5642 log_info("HCI_STATE_HALTING, calling off"); 5643 5644 // switch mode 5645 hci_power_control_off(); 5646 5647 log_info("HCI_STATE_HALTING, emitting state"); 5648 hci_emit_state(); 5649 log_info("HCI_STATE_HALTING, done"); 5650 break; 5651 5652 default: 5653 break; 5654 } 5655 }; 5656 5657 static void hci_falling_asleep_run(void){ 5658 hci_connection_t * connection; 5659 switch(hci_stack->substate) { 5660 case HCI_FALLING_ASLEEP_DISCONNECT: 5661 log_info("HCI_STATE_FALLING_ASLEEP"); 5662 // close all open connections 5663 connection = (hci_connection_t *) hci_stack->connections; 5664 if (connection){ 5665 5666 // send disconnect 5667 if (!hci_can_send_command_packet_now()) return; 5668 5669 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5670 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5671 5672 // send disconnected event right away - causes higher layer connections to get closed, too. 5673 hci_shutdown_connection(connection); 5674 return; 5675 } 5676 5677 if (hci_classic_supported()){ 5678 // disable page and inquiry scan 5679 if (!hci_can_send_command_packet_now()) return; 5680 5681 log_info("HCI_STATE_HALTING, disabling inq scans"); 5682 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5683 5684 // continue in next sub state 5685 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5686 break; 5687 } 5688 5689 /* fall through */ 5690 5691 case HCI_FALLING_ASLEEP_COMPLETE: 5692 log_info("HCI_STATE_HALTING, calling sleep"); 5693 // switch mode 5694 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5695 hci_emit_state(); 5696 break; 5697 5698 default: 5699 break; 5700 } 5701 } 5702 5703 #ifdef ENABLE_CLASSIC 5704 5705 static void hci_update_scan_enable(void){ 5706 // 2 = page scan, 1 = inq scan 5707 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5708 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5709 hci_run(); 5710 } 5711 5712 void gap_discoverable_control(uint8_t enable){ 5713 if (enable) enable = 1; // normalize argument 5714 5715 if (hci_stack->discoverable == enable){ 5716 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5717 return; 5718 } 5719 5720 hci_stack->discoverable = enable; 5721 hci_update_scan_enable(); 5722 } 5723 5724 void gap_connectable_control(uint8_t enable){ 5725 if (enable) enable = 1; // normalize argument 5726 5727 // don't emit event 5728 if (hci_stack->connectable == enable) return; 5729 5730 hci_stack->connectable = enable; 5731 hci_update_scan_enable(); 5732 } 5733 #endif 5734 5735 void gap_local_bd_addr(bd_addr_t address_buffer){ 5736 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5737 } 5738 5739 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5740 static void hci_host_num_completed_packets(void){ 5741 5742 // create packet manually as arrays are not supported and num_commands should not get reduced 5743 hci_reserve_packet_buffer(); 5744 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5745 5746 uint16_t size = 0; 5747 uint16_t num_handles = 0; 5748 packet[size++] = 0x35; 5749 packet[size++] = 0x0c; 5750 size++; // skip param len 5751 size++; // skip num handles 5752 5753 // add { handle, packets } entries 5754 btstack_linked_item_t * it; 5755 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5756 hci_connection_t * connection = (hci_connection_t *) it; 5757 if (connection->num_packets_completed){ 5758 little_endian_store_16(packet, size, connection->con_handle); 5759 size += 2; 5760 little_endian_store_16(packet, size, connection->num_packets_completed); 5761 size += 2; 5762 // 5763 num_handles++; 5764 connection->num_packets_completed = 0; 5765 } 5766 } 5767 5768 packet[2] = size - 3; 5769 packet[3] = num_handles; 5770 5771 hci_stack->host_completed_packets = 0; 5772 5773 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5774 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5775 5776 // release packet buffer for synchronous transport implementations 5777 if (hci_transport_synchronous()){ 5778 hci_release_packet_buffer(); 5779 hci_emit_transport_packet_sent(); 5780 } 5781 } 5782 #endif 5783 5784 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5785 UNUSED(ds); 5786 hci_stack->substate = HCI_HALTING_CLOSE; 5787 hci_halting_run(); 5788 } 5789 5790 static bool hci_run_acl_fragments(void){ 5791 if (hci_stack->acl_fragmentation_total_size > 0u) { 5792 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5793 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5794 if (connection) { 5795 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5796 hci_send_acl_packet_fragments(connection); 5797 return true; 5798 } 5799 } else { 5800 // connection gone -> discard further fragments 5801 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5802 hci_stack->acl_fragmentation_total_size = 0; 5803 hci_stack->acl_fragmentation_pos = 0; 5804 } 5805 } 5806 return false; 5807 } 5808 5809 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5810 static bool hci_run_iso_fragments(void){ 5811 if (hci_stack->iso_fragmentation_total_size > 0u) { 5812 // TODO: flow control 5813 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5814 hci_send_iso_packet_fragments(); 5815 return true; 5816 } 5817 } 5818 return false; 5819 } 5820 #endif 5821 5822 #ifdef ENABLE_CLASSIC 5823 5824 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5825 static bool hci_classic_operation_active(void) { 5826 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5827 return true; 5828 } 5829 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5830 return true; 5831 } 5832 btstack_linked_item_t * it; 5833 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5834 hci_connection_t *connection = (hci_connection_t *) it; 5835 switch (connection->state) { 5836 case SENT_CREATE_CONNECTION: 5837 case SENT_CANCEL_CONNECTION: 5838 case SENT_DISCONNECT: 5839 return true; 5840 default: 5841 break; 5842 } 5843 } 5844 return false; 5845 } 5846 #endif 5847 5848 static bool hci_run_general_gap_classic(void){ 5849 5850 // assert stack is working and classic is active 5851 if (hci_classic_supported() == false) return false; 5852 if (hci_stack->state != HCI_STATE_WORKING) return false; 5853 5854 // decline incoming connections 5855 if (hci_stack->decline_reason){ 5856 uint8_t reason = hci_stack->decline_reason; 5857 hci_stack->decline_reason = 0; 5858 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5859 return true; 5860 } 5861 5862 if (hci_stack->gap_tasks_classic != 0){ 5863 hci_run_gap_tasks_classic(); 5864 return true; 5865 } 5866 5867 // start/stop inquiry 5868 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5869 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5870 if (hci_classic_operation_active() == false) 5871 #endif 5872 { 5873 uint8_t duration = hci_stack->inquiry_state; 5874 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5875 if (hci_stack->inquiry_max_period_length != 0){ 5876 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); 5877 } else { 5878 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5879 } 5880 return true; 5881 } 5882 } 5883 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5884 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5885 hci_send_cmd(&hci_inquiry_cancel); 5886 return true; 5887 } 5888 5889 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5890 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5891 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5892 return true; 5893 } 5894 5895 // remote name request 5896 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5897 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5898 if (hci_classic_operation_active() == false) 5899 #endif 5900 { 5901 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5902 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5903 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5904 return true; 5905 } 5906 } 5907 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5908 // Local OOB data 5909 if (hci_stack->classic_read_local_oob_data){ 5910 hci_stack->classic_read_local_oob_data = false; 5911 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5912 hci_send_cmd(&hci_read_local_extended_oob_data); 5913 } else { 5914 hci_send_cmd(&hci_read_local_oob_data); 5915 } 5916 } 5917 #endif 5918 // pairing 5919 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5920 uint8_t state = hci_stack->gap_pairing_state; 5921 uint8_t pin_code[PIN_CODE_LEN]; 5922 switch (state){ 5923 case GAP_PAIRING_STATE_SEND_PIN: 5924 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5925 memset(pin_code, 0, 16); 5926 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5927 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5928 break; 5929 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5930 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5931 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5932 break; 5933 case GAP_PAIRING_STATE_SEND_PASSKEY: 5934 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5935 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5936 break; 5937 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5938 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5939 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5940 break; 5941 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5942 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5943 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5944 break; 5945 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5946 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5947 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5948 break; 5949 default: 5950 break; 5951 } 5952 return true; 5953 } 5954 return false; 5955 } 5956 #endif 5957 5958 #ifdef ENABLE_BLE 5959 5960 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5961 static uint8_t hci_le_num_phys(uint8_t phys){ 5962 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5963 btstack_assert(phys); 5964 return num_bits_set[phys]; 5965 } 5966 #endif 5967 5968 #ifdef ENABLE_LE_CENTRAL 5969 static void hci_le_scan_stop(void){ 5970 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5971 if (hci_le_extended_advertising_supported()) { 5972 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5973 } else 5974 #endif 5975 { 5976 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5977 } 5978 } 5979 5980 static void 5981 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5982 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5983 if (hci_le_extended_advertising_supported()) { 5984 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5985 uint16_t le_connection_scan_interval[3]; 5986 uint16_t le_connection_scan_window[3]; 5987 uint16_t le_connection_interval_min[3]; 5988 uint16_t le_connection_interval_max[3]; 5989 uint16_t le_connection_latency[3]; 5990 uint16_t le_supervision_timeout[3]; 5991 uint16_t le_minimum_ce_length[3]; 5992 uint16_t le_maximum_ce_length[3]; 5993 5994 uint8_t i; 5995 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5996 for (i=0;i<num_phys;i++){ 5997 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5998 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5999 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6000 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6001 le_connection_latency[i] = hci_stack->le_connection_latency; 6002 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6003 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6004 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6005 } 6006 hci_send_cmd(&hci_le_extended_create_connection, 6007 initiator_filter_policy, 6008 hci_stack->le_connection_own_addr_type, // our addr type: 6009 address_type, // peer address type 6010 address, // peer bd addr 6011 hci_stack->le_connection_phys, // initiating PHY 6012 le_connection_scan_interval, // conn scan interval 6013 le_connection_scan_window, // conn scan windows 6014 le_connection_interval_min, // conn interval min 6015 le_connection_interval_max, // conn interval max 6016 le_connection_latency, // conn latency 6017 le_supervision_timeout, // conn latency 6018 le_minimum_ce_length, // min ce length 6019 le_maximum_ce_length // max ce length 6020 ); 6021 } else 6022 #endif 6023 { 6024 hci_send_cmd(&hci_le_create_connection, 6025 hci_stack->le_connection_scan_interval, // conn scan interval 6026 hci_stack->le_connection_scan_window, // conn scan windows 6027 initiator_filter_policy, // don't use whitelist 6028 address_type, // peer address type 6029 address, // peer bd addr 6030 hci_stack->le_connection_own_addr_type, // our addr type: 6031 hci_stack->le_connection_interval_min, // conn interval min 6032 hci_stack->le_connection_interval_max, // conn interval max 6033 hci_stack->le_connection_latency, // conn latency 6034 hci_stack->le_supervision_timeout, // conn latency 6035 hci_stack->le_minimum_ce_length, // min ce length 6036 hci_stack->le_maximum_ce_length // max ce length 6037 ); 6038 } 6039 } 6040 #endif 6041 6042 #ifdef ENABLE_LE_PERIPHERAL 6043 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6044 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6045 uint8_t operation = 0; 6046 if (pos == 0){ 6047 // first fragment or complete data 6048 operation |= 1; 6049 } 6050 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6051 // last fragment or complete data 6052 operation |= 2; 6053 } 6054 return operation; 6055 } 6056 #endif 6057 #endif 6058 6059 static bool hci_run_general_gap_le(void){ 6060 6061 btstack_linked_list_iterator_t lit; 6062 6063 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6064 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6065 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6066 hci_stack->le_resolvable_private_address_update_s = 0; 6067 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6068 return true; 6069 } 6070 #endif 6071 6072 // Phase 1: collect what to stop 6073 6074 #ifdef ENABLE_LE_CENTRAL 6075 bool scanning_stop = false; 6076 bool connecting_stop = false; 6077 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6078 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6079 bool periodic_sync_stop = false; 6080 #endif 6081 #endif 6082 #endif 6083 6084 #ifdef ENABLE_LE_PERIPHERAL 6085 bool advertising_stop = false; 6086 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6087 le_advertising_set_t * advertising_stop_set = NULL; 6088 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6089 bool periodic_advertising_stop = false; 6090 #endif 6091 #endif 6092 #endif 6093 6094 // check if own address changes 6095 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6096 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6097 6098 // check if whitelist needs modification 6099 bool whitelist_modification_pending = false; 6100 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6101 while (btstack_linked_list_iterator_has_next(&lit)){ 6102 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6103 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6104 whitelist_modification_pending = true; 6105 break; 6106 } 6107 } 6108 6109 // check if resolving list needs modification 6110 bool resolving_list_modification_pending = false; 6111 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6112 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6113 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6114 resolving_list_modification_pending = true; 6115 } 6116 #endif 6117 6118 #ifdef ENABLE_LE_CENTRAL 6119 6120 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6121 // check if periodic advertiser list needs modification 6122 bool periodic_list_modification_pending = false; 6123 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6124 while (btstack_linked_list_iterator_has_next(&lit)){ 6125 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6126 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6127 periodic_list_modification_pending = true; 6128 break; 6129 } 6130 } 6131 #endif 6132 6133 // scanning control 6134 if (hci_stack->le_scanning_active) { 6135 // stop if: 6136 // - parameter change required 6137 // - it's disabled 6138 // - whitelist change required but used for scanning 6139 // - resolving list modified 6140 // - own address changes 6141 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6142 if ((hci_stack->le_scanning_param_update) || 6143 !hci_stack->le_scanning_enabled || 6144 (scanning_uses_whitelist && whitelist_modification_pending) || 6145 resolving_list_modification_pending || 6146 random_address_change){ 6147 6148 scanning_stop = true; 6149 } 6150 } 6151 6152 // connecting control 6153 bool connecting_with_whitelist; 6154 switch (hci_stack->le_connecting_state){ 6155 case LE_CONNECTING_DIRECT: 6156 case LE_CONNECTING_WHITELIST: 6157 // stop connecting if: 6158 // - connecting uses white and whitelist modification pending 6159 // - if it got disabled 6160 // - resolving list modified 6161 // - own address changes 6162 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6163 if ((connecting_with_whitelist && whitelist_modification_pending) || 6164 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6165 resolving_list_modification_pending || 6166 random_address_change) { 6167 6168 connecting_stop = true; 6169 } 6170 break; 6171 default: 6172 break; 6173 } 6174 6175 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6176 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6177 // periodic sync control 6178 bool sync_with_advertiser_list; 6179 switch(hci_stack->le_periodic_sync_state){ 6180 case LE_CONNECTING_DIRECT: 6181 case LE_CONNECTING_WHITELIST: 6182 // stop sync if: 6183 // - sync with advertiser list and advertiser list modification pending 6184 // - if it got disabled 6185 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6186 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6187 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6188 periodic_sync_stop = true; 6189 } 6190 break; 6191 default: 6192 break; 6193 } 6194 #endif 6195 #endif 6196 6197 #endif /* ENABLE_LE_CENTRAL */ 6198 6199 #ifdef ENABLE_LE_PERIPHERAL 6200 // le advertisement control 6201 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6202 // stop if: 6203 // - parameter change required 6204 // - random address used in advertising and changes 6205 // - it's disabled 6206 // - whitelist change required but used for advertisement filter policy 6207 // - resolving list modified 6208 // - own address changes 6209 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6210 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6211 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6212 if (advertising_change || 6213 (advertising_uses_random_address && random_address_change) || 6214 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6215 (advertising_uses_whitelist && whitelist_modification_pending) || 6216 resolving_list_modification_pending || 6217 random_address_change) { 6218 6219 advertising_stop = true; 6220 } 6221 } 6222 6223 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6224 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6225 btstack_linked_list_iterator_t it; 6226 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6227 while (btstack_linked_list_iterator_has_next(&it)){ 6228 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6229 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6230 // stop if: 6231 // - parameter change required 6232 // - random address used in connectable advertising and changes 6233 // - it's disabled 6234 // - whitelist change required but used for advertisement filter policy 6235 // - resolving list modified 6236 // - own address changes 6237 // - advertisement set will be removed 6238 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6239 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6240 bool advertising_uses_random_address = 6241 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6242 advertising_connectable; 6243 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6244 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6245 bool advertising_set_random_address_change = 6246 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6247 bool advertising_set_will_be_removed = 6248 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6249 if (advertising_parameter_change || 6250 (advertising_uses_random_address && advertising_set_random_address_change) || 6251 (advertising_enabled == false) || 6252 (advertising_uses_whitelist && whitelist_modification_pending) || 6253 resolving_list_modification_pending || 6254 advertising_set_will_be_removed) { 6255 6256 advertising_stop = true; 6257 advertising_stop_set = advertising_set; 6258 break; 6259 } 6260 } 6261 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6262 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6263 // stop if: 6264 // - it's disabled 6265 // - parameter change required 6266 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6267 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6268 if ((periodic_enabled == false) || periodic_parameter_change){ 6269 periodic_advertising_stop = true; 6270 advertising_stop_set = advertising_set; 6271 } 6272 } 6273 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6274 } 6275 } 6276 #endif 6277 6278 #endif 6279 6280 6281 // Phase 2: stop everything that should be off during modifications 6282 6283 6284 // 2.1 Outgoing connection 6285 #ifdef ENABLE_LE_CENTRAL 6286 if (connecting_stop){ 6287 hci_send_cmd(&hci_le_create_connection_cancel); 6288 return true; 6289 } 6290 #endif 6291 6292 // 2.2 Scanning 6293 #ifdef ENABLE_LE_CENTRAL 6294 if (scanning_stop){ 6295 hci_stack->le_scanning_active = false; 6296 hci_le_scan_stop(); 6297 return true; 6298 } 6299 6300 // 2.3 Periodic Sync 6301 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6302 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6303 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6304 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6305 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6306 return true; 6307 } 6308 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6309 if (periodic_sync_stop){ 6310 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6311 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6312 return true; 6313 } 6314 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6315 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6316 #endif /* ENABLE_LE_CENTRAL */ 6317 6318 // 2.4 Advertising: legacy, extended, periodic 6319 #ifdef ENABLE_LE_PERIPHERAL 6320 if (advertising_stop){ 6321 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6322 if (hci_le_extended_advertising_supported()) { 6323 uint8_t advertising_stop_handle; 6324 if (advertising_stop_set != NULL){ 6325 advertising_stop_handle = advertising_stop_set->advertising_handle; 6326 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6327 } else { 6328 advertising_stop_handle = 0; 6329 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6330 } 6331 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6332 const uint16_t durations[] = { 0 }; 6333 const uint16_t max_events[] = { 0 }; 6334 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6335 } else 6336 #endif 6337 { 6338 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6339 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6340 } 6341 return true; 6342 } 6343 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6344 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6345 if (periodic_advertising_stop){ 6346 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6347 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6348 return true; 6349 } 6350 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6351 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6352 #endif /* ENABLE_LE_PERIPHERAL */ 6353 6354 6355 // Phase 3: modify 6356 6357 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6358 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6359 // GAP Privacy, notify clients upon upcoming random address change 6360 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6361 gap_privacy_clients_notify(hci_stack->le_random_address); 6362 } 6363 6364 // - wait until privacy update completed 6365 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6366 return false; 6367 } 6368 6369 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6370 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6371 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6372 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6373 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6374 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6375 #endif 6376 return true; 6377 } 6378 6379 #ifdef ENABLE_LE_CENTRAL 6380 if (hci_stack->le_scanning_param_update){ 6381 hci_stack->le_scanning_param_update = false; 6382 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6383 if (hci_le_extended_advertising_supported()){ 6384 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6385 uint8_t scan_types[2]; 6386 uint16_t scan_intervals[2]; 6387 uint16_t scan_windows[2]; 6388 6389 uint8_t i; 6390 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6391 for (i=0;i<num_phys;i++){ 6392 scan_types[i] = hci_stack->le_scan_type; 6393 scan_intervals[i] = hci_stack->le_scan_interval; 6394 scan_windows[i] = hci_stack->le_scan_window; 6395 } 6396 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6397 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6398 } else 6399 #endif 6400 { 6401 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6402 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6403 } 6404 return true; 6405 } 6406 #endif 6407 6408 #ifdef ENABLE_LE_PERIPHERAL 6409 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6410 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6411 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6412 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6413 if (hci_le_extended_advertising_supported()){ 6414 // map advertisment type to advertising event properties 6415 uint16_t adv_event_properties = 0; 6416 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6417 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6418 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6419 } 6420 hci_stack->le_advertising_set_in_current_command = 0; 6421 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6422 0, 6423 adv_event_properties, 6424 hci_stack->le_advertisements_interval_min, 6425 hci_stack->le_advertisements_interval_max, 6426 hci_stack->le_advertisements_channel_map, 6427 hci_stack->le_advertisements_own_addr_type, 6428 hci_stack->le_advertisements_direct_address_type, 6429 hci_stack->le_advertisements_direct_address, 6430 hci_stack->le_advertisements_filter_policy, 6431 0x7f, // tx power: no preference 6432 0x01, // primary adv phy: LE 1M 6433 0, // secondary adv max skip 6434 0x01, // secondary adv phy 6435 0, // adv sid 6436 0 // scan request notification 6437 ); 6438 } else 6439 #endif 6440 { 6441 hci_send_cmd(&hci_le_set_advertising_parameters, 6442 hci_stack->le_advertisements_interval_min, 6443 hci_stack->le_advertisements_interval_max, 6444 hci_stack->le_advertisements_type, 6445 hci_stack->le_advertisements_own_addr_type, 6446 hci_stack->le_advertisements_direct_address_type, 6447 hci_stack->le_advertisements_direct_address, 6448 hci_stack->le_advertisements_channel_map, 6449 hci_stack->le_advertisements_filter_policy); 6450 } 6451 return true; 6452 } 6453 6454 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6455 // assumption: only set if extended advertising is supported 6456 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6457 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6458 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6459 return true; 6460 } 6461 #endif 6462 6463 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6464 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6465 uint8_t adv_data_clean[31]; 6466 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6467 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6468 hci_stack->le_advertisements_data_len); 6469 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6470 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6471 if (hci_le_extended_advertising_supported()){ 6472 hci_stack->le_advertising_set_in_current_command = 0; 6473 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6474 } else 6475 #endif 6476 { 6477 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6478 } 6479 return true; 6480 } 6481 6482 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6483 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6484 uint8_t scan_data_clean[31]; 6485 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6486 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6487 hci_stack->le_scan_response_data_len); 6488 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6489 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6490 if (hci_le_extended_advertising_supported()){ 6491 hci_stack->le_advertising_set_in_current_command = 0; 6492 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6493 } else 6494 #endif 6495 { 6496 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6497 } 6498 return true; 6499 } 6500 6501 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6502 if (hci_le_extended_advertising_supported()) { 6503 btstack_linked_list_iterator_t it; 6504 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6505 while (btstack_linked_list_iterator_has_next(&it)){ 6506 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6507 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6508 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6509 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6510 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6511 return true; 6512 } 6513 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6514 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6515 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6516 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6517 advertising_set->advertising_handle, 6518 advertising_set->extended_params.advertising_event_properties, 6519 advertising_set->extended_params.primary_advertising_interval_min, 6520 advertising_set->extended_params.primary_advertising_interval_max, 6521 advertising_set->extended_params.primary_advertising_channel_map, 6522 advertising_set->extended_params.own_address_type, 6523 advertising_set->extended_params.peer_address_type, 6524 advertising_set->extended_params.peer_address, 6525 advertising_set->extended_params.advertising_filter_policy, 6526 advertising_set->extended_params.advertising_tx_power, 6527 advertising_set->extended_params.primary_advertising_phy, 6528 advertising_set->extended_params.secondary_advertising_max_skip, 6529 advertising_set->extended_params.secondary_advertising_phy, 6530 advertising_set->extended_params.advertising_sid, 6531 advertising_set->extended_params.scan_request_notification_enable 6532 ); 6533 return true; 6534 } 6535 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6536 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6537 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6538 return true; 6539 } 6540 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6541 uint16_t pos = advertising_set->adv_data_pos; 6542 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6543 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6544 if ((operation & 0x02) != 0){ 6545 // last fragment or complete data 6546 operation |= 2; 6547 advertising_set->adv_data_pos = 0; 6548 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6549 } else { 6550 advertising_set->adv_data_pos += data_to_upload; 6551 } 6552 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6553 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6554 return true; 6555 } 6556 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6557 uint16_t pos = advertising_set->scan_data_pos; 6558 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6559 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6560 if ((operation & 0x02) != 0){ 6561 advertising_set->scan_data_pos = 0; 6562 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6563 } else { 6564 advertising_set->scan_data_pos += data_to_upload; 6565 } 6566 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6567 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6568 return true; 6569 } 6570 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6571 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6572 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6573 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6574 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6575 advertising_set->advertising_handle, 6576 advertising_set->periodic_params.periodic_advertising_interval_min, 6577 advertising_set->periodic_params.periodic_advertising_interval_max, 6578 advertising_set->periodic_params.periodic_advertising_properties); 6579 return true; 6580 } 6581 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6582 uint16_t pos = advertising_set->periodic_data_pos; 6583 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6584 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6585 if ((operation & 0x02) != 0){ 6586 // last fragment or complete data 6587 operation |= 2; 6588 advertising_set->periodic_data_pos = 0; 6589 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6590 } else { 6591 advertising_set->periodic_data_pos += data_to_upload; 6592 } 6593 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6594 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6595 return true; 6596 } 6597 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6598 } 6599 } 6600 #endif 6601 6602 #endif 6603 6604 #ifdef ENABLE_LE_CENTRAL 6605 // if connect with whitelist was active and is not cancelled yet, wait until next time 6606 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6607 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6608 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6609 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6610 #endif 6611 #endif 6612 6613 // LE Whitelist Management 6614 if (whitelist_modification_pending){ 6615 // add/remove entries 6616 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6617 while (btstack_linked_list_iterator_has_next(&lit)){ 6618 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6619 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6620 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6621 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6622 bd_addr_type_t address_type = entry->address_type; 6623 bd_addr_t address; 6624 memcpy(address, entry->address, 6); 6625 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6626 // remove from whitelist if not scheduled for re-addition 6627 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6628 btstack_memory_whitelist_entry_free(entry); 6629 } 6630 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6631 return true; 6632 } 6633 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6634 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6635 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6636 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6637 return true; 6638 } 6639 } 6640 } 6641 6642 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6643 // LE Resolving List Management 6644 if (resolving_list_modification_pending) { 6645 uint16_t i; 6646 uint8_t null_16[16]; 6647 uint8_t local_irk_flipped[16]; 6648 const uint8_t *local_irk; 6649 switch (hci_stack->le_resolving_list_state) { 6650 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6651 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6652 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6653 return true; 6654 case LE_RESOLVING_LIST_READ_SIZE: 6655 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6656 hci_send_cmd(&hci_le_read_resolving_list_size); 6657 return true; 6658 case LE_RESOLVING_LIST_SEND_CLEAR: 6659 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6660 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6661 sizeof(hci_stack->le_resolving_list_add_entries)); 6662 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6663 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6664 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6665 sizeof(hci_stack->le_resolving_list_remove_entries)); 6666 hci_send_cmd(&hci_le_clear_resolving_list); 6667 return true; 6668 case LE_RESOLVING_LIST_SET_IRK: 6669 // set IRK used by RPA for undirected advertising 6670 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6671 local_irk = gap_get_persistent_irk(); 6672 reverse_128(local_irk, local_irk_flipped); 6673 memset(null_16, 0, sizeof(null_16)); 6674 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6675 null_16, local_irk_flipped); 6676 return true; 6677 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6678 // first remove old entries 6679 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6680 uint8_t offset = i >> 3; 6681 uint8_t mask = 1 << (i & 7); 6682 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6683 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6684 bd_addr_t peer_identity_addreses; 6685 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6686 sm_key_t peer_irk; 6687 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6688 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6689 6690 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6691 // trigger whitelist entry 'update' (work around for controller bug) 6692 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6693 while (btstack_linked_list_iterator_has_next(&lit)) { 6694 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6695 if (entry->address_type != peer_identity_addr_type) continue; 6696 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6697 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6698 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6699 } 6700 #endif 6701 6702 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6703 peer_identity_addreses); 6704 return true; 6705 } 6706 6707 // then add new entries 6708 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6709 uint8_t offset = i >> 3; 6710 uint8_t mask = 1 << (i & 7); 6711 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6712 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6713 bd_addr_t peer_identity_addreses; 6714 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6715 sm_key_t peer_irk; 6716 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6717 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6718 if (btstack_is_null(peer_irk, 16)) continue; 6719 local_irk = gap_get_persistent_irk(); 6720 // command uses format specifier 'P' that stores 16-byte value without flip 6721 uint8_t peer_irk_flipped[16]; 6722 reverse_128(local_irk, local_irk_flipped); 6723 reverse_128(peer_irk, peer_irk_flipped); 6724 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6725 peer_irk_flipped, local_irk_flipped); 6726 return true; 6727 } 6728 6729 // finally, set privacy mode 6730 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6731 uint8_t offset = i >> 3; 6732 uint8_t mask = 1 << (i & 7); 6733 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6734 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6735 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6736 // Network Privacy Mode is default 6737 continue; 6738 } 6739 bd_addr_t peer_identity_address; 6740 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6741 sm_key_t peer_irk; 6742 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6743 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6744 if (btstack_is_null(peer_irk, 16)) continue; 6745 // command uses format specifier 'P' that stores 16-byte value without flip 6746 uint8_t peer_irk_flipped[16]; 6747 reverse_128(peer_irk, peer_irk_flipped); 6748 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6749 return true; 6750 } 6751 break; 6752 6753 default: 6754 break; 6755 } 6756 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6757 } 6758 #endif 6759 6760 #ifdef ENABLE_LE_CENTRAL 6761 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6762 // LE Whitelist Management 6763 if (periodic_list_modification_pending){ 6764 // add/remove entries 6765 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6766 while (btstack_linked_list_iterator_has_next(&lit)){ 6767 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6768 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6769 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6770 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6771 return true; 6772 } 6773 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6774 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6775 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6776 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6777 return true; 6778 } 6779 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6780 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6781 btstack_memory_periodic_advertiser_list_entry_free(entry); 6782 } 6783 } 6784 } 6785 #endif 6786 #endif 6787 6788 #ifdef ENABLE_LE_CENTRAL 6789 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6790 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6791 if (hci_stack->le_past_set_default_params){ 6792 hci_stack->le_past_set_default_params = false; 6793 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6794 hci_stack->le_past_mode, 6795 hci_stack->le_past_skip, 6796 hci_stack->le_past_sync_timeout, 6797 hci_stack->le_past_cte_type); 6798 return true; 6799 } 6800 #endif 6801 #endif 6802 #endif 6803 6804 // post-pone all actions until stack is fully working 6805 if (hci_stack->state != HCI_STATE_WORKING) return false; 6806 6807 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6808 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6809 6810 // Phase 4: restore state 6811 6812 #ifdef ENABLE_LE_CENTRAL 6813 // re-start scanning 6814 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6815 hci_stack->le_scanning_active = true; 6816 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6817 if (hci_le_extended_advertising_supported()){ 6818 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6819 } else 6820 #endif 6821 { 6822 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6823 } 6824 return true; 6825 } 6826 #endif 6827 6828 #ifdef ENABLE_LE_CENTRAL 6829 // re-start connecting 6830 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6831 bd_addr_t null_addr; 6832 memset(null_addr, 0, 6); 6833 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6834 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6835 hci_send_le_create_connection(1, 0, null_addr); 6836 return true; 6837 } 6838 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6839 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6840 switch(hci_stack->le_periodic_sync_request){ 6841 case LE_CONNECTING_DIRECT: 6842 case LE_CONNECTING_WHITELIST: 6843 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6844 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6845 hci_stack->le_periodic_sync_options, 6846 hci_stack->le_periodic_sync_advertising_sid, 6847 hci_stack->le_periodic_sync_advertiser_address_type, 6848 hci_stack->le_periodic_sync_advertiser_address, 6849 hci_stack->le_periodic_sync_skip, 6850 hci_stack->le_periodic_sync_timeout, 6851 hci_stack->le_periodic_sync_cte_type); 6852 return true; 6853 default: 6854 break; 6855 } 6856 } 6857 #endif 6858 #endif 6859 6860 #ifdef ENABLE_LE_PERIPHERAL 6861 // re-start advertising 6862 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6863 // check if advertisements should be enabled given 6864 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6865 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6866 6867 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6868 if (hci_le_extended_advertising_supported()){ 6869 const uint8_t advertising_handles[] = { 0 }; 6870 const uint16_t durations[] = { 0 }; 6871 const uint16_t max_events[] = { 0 }; 6872 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6873 } else 6874 #endif 6875 { 6876 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6877 } 6878 return true; 6879 } 6880 6881 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6882 if (hci_le_extended_advertising_supported()) { 6883 btstack_linked_list_iterator_t it; 6884 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6885 while (btstack_linked_list_iterator_has_next(&it)) { 6886 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6887 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6888 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6889 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6890 const uint16_t durations[] = { advertising_set->enable_timeout }; 6891 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6892 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6893 return true; 6894 } 6895 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6896 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6897 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6898 uint8_t enable = 1; 6899 if (advertising_set->periodic_include_adi){ 6900 enable |= 2; 6901 } 6902 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6903 return true; 6904 } 6905 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6906 } 6907 } 6908 #endif 6909 #endif 6910 6911 return false; 6912 } 6913 6914 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6915 static bool hci_run_iso_tasks(void){ 6916 btstack_linked_list_iterator_t it; 6917 6918 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6919 return false; 6920 } 6921 6922 // BIG 6923 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6924 while (btstack_linked_list_iterator_has_next(&it)){ 6925 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6926 switch (big->state){ 6927 case LE_AUDIO_BIG_STATE_CREATE: 6928 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6929 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6930 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6931 hci_send_cmd(&hci_le_create_big, 6932 big->params->big_handle, 6933 big->params->advertising_handle, 6934 big->params->num_bis, 6935 big->params->sdu_interval_us, 6936 big->params->max_sdu, 6937 big->params->max_transport_latency_ms, 6938 big->params->rtn, 6939 big->params->phy, 6940 big->params->packing, 6941 big->params->framing, 6942 big->params->encryption, 6943 big->params->broadcast_code); 6944 return true; 6945 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6946 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6947 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); 6948 return true; 6949 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6950 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6951 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6952 return true; 6953 case LE_AUDIO_BIG_STATE_TERMINATE: 6954 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6955 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6956 return true; 6957 default: 6958 break; 6959 } 6960 } 6961 6962 // BIG Sync 6963 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6964 while (btstack_linked_list_iterator_has_next(&it)){ 6965 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6966 switch (big_sync->state){ 6967 case LE_AUDIO_BIG_STATE_CREATE: 6968 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6969 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6970 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6971 hci_send_cmd(&hci_le_big_create_sync, 6972 big_sync->params->big_handle, 6973 big_sync->params->sync_handle, 6974 big_sync->params->encryption, 6975 big_sync->params->broadcast_code, 6976 big_sync->params->mse, 6977 big_sync->params->big_sync_timeout_10ms, 6978 big_sync->params->num_bis, 6979 big_sync->params->bis_indices); 6980 return true; 6981 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6982 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6983 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); 6984 return true; 6985 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6986 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6987 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6988 return true; 6989 case LE_AUDIO_BIG_STATE_TERMINATE: 6990 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6991 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6992 return true; 6993 default: 6994 break; 6995 } 6996 } 6997 6998 // CIG 6999 bool cig_active; 7000 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7001 while (btstack_linked_list_iterator_has_next(&it)) { 7002 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7003 uint8_t i; 7004 // Set CIG Parameters 7005 uint8_t cis_id[MAX_NR_CIS]; 7006 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7007 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7008 uint8_t phy_c_to_p[MAX_NR_CIS]; 7009 uint8_t phy_p_to_c[MAX_NR_CIS]; 7010 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7011 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7012 switch (cig->state) { 7013 case LE_AUDIO_CIG_STATE_CREATE: 7014 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7015 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7016 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7017 le_audio_cig_params_t * params = cig->params; 7018 for (i = 0; i < params->num_cis; i++) { 7019 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7020 cis_id[i] = cis_params->cis_id; 7021 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7022 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7023 phy_c_to_p[i] = cis_params->phy_c_to_p; 7024 phy_p_to_c[i] = cis_params->phy_p_to_c; 7025 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7026 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7027 } 7028 hci_send_cmd(&hci_le_set_cig_parameters, 7029 cig->cig_id, 7030 params->sdu_interval_c_to_p, 7031 params->sdu_interval_p_to_c, 7032 params->worst_case_sca, 7033 params->packing, 7034 params->framing, 7035 params->max_transport_latency_c_to_p, 7036 params->max_transport_latency_p_to_c, 7037 params->num_cis, 7038 cis_id, 7039 max_sdu_c_to_p, 7040 max_sdu_p_to_c, 7041 phy_c_to_p, 7042 phy_p_to_c, 7043 rtn_c_to_p, 7044 rtn_p_to_c 7045 ); 7046 return true; 7047 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7048 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7049 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7050 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7051 for (i=0;i<cig->num_cis;i++){ 7052 cig->cis_setup_active[i] = true; 7053 } 7054 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7055 return true; 7056 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7057 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7058 // find next path to setup 7059 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7060 if (cig->cis_established[cis_index] == false) { 7061 continue; 7062 } 7063 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7064 bool setup = true; 7065 if (cis_direction == 0){ 7066 // 0 - input - host to controller 7067 // we are central => central to peripheral 7068 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7069 } else { 7070 // 1 - output - controller to host 7071 // we are central => peripheral to central 7072 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7073 } 7074 if (setup){ 7075 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7076 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7077 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7078 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); 7079 return true; 7080 } 7081 cig->state_vars.next_cis++; 7082 } 7083 // emit done 7084 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7085 break; 7086 case LE_AUDIO_CIG_STATE_REMOVE: 7087 // check if CIG Active 7088 cig_active = false; 7089 for (i = 0; i < cig->num_cis; i++) { 7090 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7091 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7092 if (stream != NULL){ 7093 cig_active = true; 7094 break; 7095 } 7096 } 7097 } 7098 if (cig_active == false){ 7099 btstack_linked_list_iterator_remove(&it); 7100 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7101 return true; 7102 } 7103 default: 7104 break; 7105 } 7106 } 7107 7108 // CIS Accept/Reject/Setup ISO Path/Close 7109 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7110 while (btstack_linked_list_iterator_has_next(&it)) { 7111 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7112 hci_con_handle_t con_handle; 7113 switch (iso_stream->state){ 7114 case HCI_ISO_STREAM_W2_ACCEPT: 7115 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7116 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7117 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7118 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7119 return true; 7120 case HCI_ISO_STREAM_W2_REJECT: 7121 con_handle = iso_stream->cis_handle; 7122 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7123 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7124 hci_iso_stream_finalize(iso_stream); 7125 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7126 return true; 7127 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7128 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7129 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7130 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7131 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); 7132 break; 7133 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7134 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7135 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7136 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7137 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); 7138 break; 7139 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7140 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7141 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7142 break; 7143 default: 7144 break; 7145 } 7146 } 7147 7148 return false; 7149 } 7150 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7151 #endif 7152 7153 static bool hci_run_general_pending_commands(void){ 7154 btstack_linked_item_t * it; 7155 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7156 hci_connection_t * connection = (hci_connection_t *) it; 7157 7158 switch(connection->state){ 7159 case SEND_CREATE_CONNECTION: 7160 switch(connection->address_type){ 7161 #ifdef ENABLE_CLASSIC 7162 case BD_ADDR_TYPE_ACL: 7163 log_info("sending hci_create_connection"); 7164 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7165 break; 7166 #endif 7167 default: 7168 #ifdef ENABLE_BLE 7169 #ifdef ENABLE_LE_CENTRAL 7170 log_info("sending hci_le_create_connection"); 7171 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7172 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7173 hci_send_le_create_connection(0, connection->address_type, connection->address); 7174 connection->state = SENT_CREATE_CONNECTION; 7175 #endif 7176 #endif 7177 break; 7178 } 7179 return true; 7180 7181 #ifdef ENABLE_CLASSIC 7182 case RECEIVED_CONNECTION_REQUEST: 7183 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7184 log_info("sending hci_accept_connection_request"); 7185 connection->state = ACCEPTED_CONNECTION_REQUEST; 7186 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7187 return true; 7188 } 7189 break; 7190 #endif 7191 case SEND_DISCONNECT: 7192 connection->state = SENT_DISCONNECT; 7193 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7194 return true; 7195 7196 default: 7197 break; 7198 } 7199 7200 // no further commands if connection is about to get shut down 7201 if (connection->state == SENT_DISCONNECT) continue; 7202 7203 #ifdef ENABLE_CLASSIC 7204 7205 // Handling link key request requires remote supported features 7206 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7207 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7208 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7209 7210 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7211 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7212 if (have_link_key && security_level_sufficient){ 7213 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7214 } else { 7215 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7216 } 7217 return true; 7218 } 7219 7220 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7221 log_info("denying to pin request"); 7222 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7223 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7224 return true; 7225 } 7226 7227 // security assessment requires remote features 7228 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7229 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7230 hci_ssp_assess_security_on_io_cap_request(connection); 7231 // 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 7232 } 7233 7234 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7235 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7236 // set authentication requirements: 7237 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7238 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7239 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7240 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7241 authreq |= 1; 7242 } 7243 bool bonding = hci_stack->bondable; 7244 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7245 // if we have received IO Cap Response, we're in responder role 7246 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7247 if (bonding && !remote_bonding){ 7248 log_info("Remote not bonding, dropping local flag"); 7249 bonding = false; 7250 } 7251 } 7252 if (bonding){ 7253 if (connection->bonding_flags & BONDING_DEDICATED){ 7254 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7255 } else { 7256 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7257 } 7258 } 7259 uint8_t have_oob_data = 0; 7260 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7261 if (connection->classic_oob_c_192 != NULL){ 7262 have_oob_data |= 1; 7263 } 7264 if (connection->classic_oob_c_256 != NULL){ 7265 have_oob_data |= 2; 7266 } 7267 #endif 7268 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7269 return true; 7270 } 7271 7272 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7273 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7274 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7275 return true; 7276 } 7277 7278 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7279 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7280 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7281 const uint8_t zero[16] = { 0 }; 7282 const uint8_t * r_192 = zero; 7283 const uint8_t * c_192 = zero; 7284 const uint8_t * r_256 = zero; 7285 const uint8_t * c_256 = zero; 7286 // verify P-256 OOB 7287 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7288 c_256 = connection->classic_oob_c_256; 7289 if (connection->classic_oob_r_256 != NULL) { 7290 r_256 = connection->classic_oob_r_256; 7291 } 7292 } 7293 // verify P-192 OOB 7294 if ((connection->classic_oob_c_192 != NULL)) { 7295 c_192 = connection->classic_oob_c_192; 7296 if (connection->classic_oob_r_192 != NULL) { 7297 r_192 = connection->classic_oob_r_192; 7298 } 7299 } 7300 7301 // assess security 7302 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7303 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7304 if (need_level_4 && !can_reach_level_4){ 7305 log_info("Level 4 required, but not possible -> abort"); 7306 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7307 // send oob negative reply 7308 c_256 = NULL; 7309 c_192 = NULL; 7310 } 7311 7312 // Reply 7313 if (c_256 != zero) { 7314 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7315 } else if (c_192 != zero){ 7316 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7317 } else { 7318 hci_stack->classic_oob_con_handle = connection->con_handle; 7319 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7320 } 7321 return true; 7322 } 7323 #endif 7324 7325 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7326 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7327 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7328 return true; 7329 } 7330 7331 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7332 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7333 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7334 return true; 7335 } 7336 7337 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7338 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7339 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7340 return true; 7341 } 7342 7343 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7344 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7345 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7346 connection->state = SENT_DISCONNECT; 7347 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7348 return true; 7349 } 7350 7351 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7352 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7353 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7354 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7355 return true; 7356 } 7357 7358 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7359 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7360 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7361 return true; 7362 } 7363 7364 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7365 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7366 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7367 return true; 7368 } 7369 7370 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7371 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7372 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7373 return true; 7374 } 7375 7376 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7377 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7378 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7379 return true; 7380 } 7381 7382 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7383 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7384 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7385 return true; 7386 } 7387 #endif 7388 7389 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7390 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7391 #ifdef ENABLE_CLASSIC 7392 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7393 #endif 7394 if (connection->state != SENT_DISCONNECT){ 7395 connection->state = SENT_DISCONNECT; 7396 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7397 return true; 7398 } 7399 } 7400 7401 #ifdef ENABLE_CLASSIC 7402 uint16_t sniff_min_interval; 7403 switch (connection->sniff_min_interval){ 7404 case 0: 7405 break; 7406 case 0xffff: 7407 connection->sniff_min_interval = 0; 7408 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7409 return true; 7410 default: 7411 sniff_min_interval = connection->sniff_min_interval; 7412 connection->sniff_min_interval = 0; 7413 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7414 return true; 7415 } 7416 7417 if (connection->sniff_subrating_max_latency != 0xffff){ 7418 uint16_t max_latency = connection->sniff_subrating_max_latency; 7419 connection->sniff_subrating_max_latency = 0; 7420 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7421 return true; 7422 } 7423 7424 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7425 uint8_t service_type = (uint8_t) connection->qos_service_type; 7426 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7427 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); 7428 return true; 7429 } 7430 7431 if (connection->request_role != HCI_ROLE_INVALID){ 7432 hci_role_t role = connection->request_role; 7433 connection->request_role = HCI_ROLE_INVALID; 7434 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7435 return true; 7436 } 7437 #endif 7438 7439 if (connection->gap_connection_tasks != 0){ 7440 #ifdef ENABLE_CLASSIC 7441 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7442 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7443 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7444 return true; 7445 } 7446 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7447 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7448 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7449 return true; 7450 } 7451 #endif 7452 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7453 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7454 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7455 return true; 7456 } 7457 #ifdef ENABLE_BLE 7458 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7459 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7460 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7461 return true; 7462 } 7463 #endif 7464 } 7465 7466 #ifdef ENABLE_BLE 7467 switch (connection->le_con_parameter_update_state){ 7468 // response to L2CAP CON PARAMETER UPDATE REQUEST 7469 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7470 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7471 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7472 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7473 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7474 return true; 7475 case CON_PARAMETER_UPDATE_REPLY: 7476 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7477 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7478 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7479 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7480 return true; 7481 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7482 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7483 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7484 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7485 return true; 7486 default: 7487 break; 7488 } 7489 if (connection->le_phy_update_all_phys != 0xffu){ 7490 uint8_t all_phys = connection->le_phy_update_all_phys; 7491 connection->le_phy_update_all_phys = 0xff; 7492 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); 7493 return true; 7494 } 7495 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7496 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7497 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7498 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7499 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7500 return true; 7501 } 7502 if (connection->le_past_advertising_handle != 0xff){ 7503 uint8_t advertising_handle = connection->le_past_advertising_handle; 7504 connection->le_past_advertising_handle = 0xff; 7505 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7506 return true; 7507 } 7508 #endif 7509 #endif 7510 } 7511 return false; 7512 } 7513 7514 static void hci_run(void){ 7515 7516 // stack state sub statemachines 7517 switch (hci_stack->state) { 7518 case HCI_STATE_INITIALIZING: 7519 hci_initializing_run(); 7520 break; 7521 case HCI_STATE_HALTING: 7522 hci_halting_run(); 7523 break; 7524 case HCI_STATE_FALLING_ASLEEP: 7525 hci_falling_asleep_run(); 7526 break; 7527 default: 7528 break; 7529 } 7530 7531 // allow to run after initialization to working transition 7532 if (hci_stack->state != HCI_STATE_WORKING){ 7533 return; 7534 } 7535 7536 bool done; 7537 7538 // send continuation fragments first, as they block the prepared packet buffer 7539 done = hci_run_acl_fragments(); 7540 if (done) return; 7541 7542 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7543 done = hci_run_iso_fragments(); 7544 if (done) return; 7545 #endif 7546 7547 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7548 // send host num completed packets next as they don't require num_cmd_packets > 0 7549 if (!hci_can_send_comand_packet_transport()) return; 7550 if (hci_stack->host_completed_packets){ 7551 hci_host_num_completed_packets(); 7552 return; 7553 } 7554 #endif 7555 7556 if (!hci_can_send_command_packet_now()) return; 7557 7558 // global/non-connection oriented commands 7559 7560 7561 #ifdef ENABLE_CLASSIC 7562 // general gap classic 7563 done = hci_run_general_gap_classic(); 7564 if (done) return; 7565 #endif 7566 7567 #ifdef ENABLE_BLE 7568 // general gap le 7569 done = hci_run_general_gap_le(); 7570 if (done) return; 7571 7572 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7573 // ISO related tasks, e.g. BIG create/terminate/sync 7574 done = hci_run_iso_tasks(); 7575 if (done) return; 7576 #endif 7577 #endif 7578 7579 // send pending HCI commands 7580 hci_run_general_pending_commands(); 7581 } 7582 7583 #ifdef ENABLE_CLASSIC 7584 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7585 // bits 6-9 are 'don't use' 7586 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7587 7588 // restrict packet types to local and remote supported 7589 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7590 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7591 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7592 } 7593 #endif 7594 7595 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7596 // house-keeping 7597 7598 #ifdef ENABLE_CLASSIC 7599 bd_addr_t addr; 7600 hci_connection_t * conn; 7601 #endif 7602 #ifdef ENABLE_LE_CENTRAL 7603 uint8_t initiator_filter_policy; 7604 #endif 7605 7606 uint16_t opcode = little_endian_read_16(packet, 0); 7607 switch (opcode) { 7608 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7609 hci_stack->loopback_mode = packet[3]; 7610 break; 7611 7612 #ifdef ENABLE_CLASSIC 7613 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7614 reverse_bd_addr(&packet[3], addr); 7615 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7616 7617 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7618 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7619 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7620 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7621 } 7622 7623 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7624 if (!conn) { 7625 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7626 if (!conn) { 7627 // notify client that alloc failed 7628 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7629 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7630 } 7631 conn->state = SEND_CREATE_CONNECTION; 7632 } 7633 7634 log_info("conn state %u", conn->state); 7635 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7636 switch (conn->state) { 7637 // if connection active exists 7638 case OPEN: 7639 // and OPEN, emit connection complete command 7640 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7641 // packet not sent to controller 7642 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7643 case RECEIVED_DISCONNECTION_COMPLETE: 7644 // create connection triggered in disconnect complete event, let's do it now 7645 break; 7646 case SEND_CREATE_CONNECTION: 7647 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7648 if (hci_classic_operation_active()){ 7649 return ERROR_CODE_SUCCESS; 7650 } 7651 #endif 7652 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7653 break; 7654 default: 7655 // otherwise, just ignore as it is already in the open process 7656 // packet not sent to controller 7657 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7658 } 7659 conn->state = SENT_CREATE_CONNECTION; 7660 7661 // track outgoing connection 7662 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7663 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7664 break; 7665 7666 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7667 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7668 if (conn == NULL) { 7669 // neither SCO nor ACL connection for con handle 7670 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7671 } else { 7672 uint16_t remote_supported_sco_packets; 7673 switch (conn->address_type){ 7674 case BD_ADDR_TYPE_ACL: 7675 // assert SCO connection does not exit 7676 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7677 return ERROR_CODE_COMMAND_DISALLOWED; 7678 } 7679 // cache remote sco packet types 7680 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7681 7682 // allocate connection struct 7683 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7684 HCI_ROLE_MASTER); 7685 if (!conn) { 7686 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7687 } 7688 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7689 break; 7690 case BD_ADDR_TYPE_SCO: 7691 // update of existing SCO connection 7692 break; 7693 default: 7694 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7695 } 7696 } 7697 7698 // conn refers to hci connection of type sco now 7699 7700 conn->state = SENT_CREATE_CONNECTION; 7701 7702 // track outgoing connection to handle command status with error 7703 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7704 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7705 7706 // setup_synchronous_connection? Voice setting at offset 22 7707 // TODO: compare to current setting if sco connection already active 7708 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7709 7710 // derive sco payload length from packet types 7711 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7712 break; 7713 7714 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7715 // get SCO connection 7716 reverse_bd_addr(&packet[3], addr); 7717 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7718 if (conn == NULL){ 7719 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7720 } 7721 7722 conn->state = ACCEPTED_CONNECTION_REQUEST; 7723 7724 // track outgoing connection to handle command status with error 7725 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7726 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7727 7728 // accept_synchronous_connection? Voice setting at offset 18 7729 // TODO: compare to current setting if sco connection already active 7730 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7731 7732 // derive sco payload length from packet types 7733 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7734 break; 7735 #endif 7736 7737 #ifdef ENABLE_BLE 7738 #ifdef ENABLE_LE_CENTRAL 7739 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7740 // white list used? 7741 initiator_filter_policy = packet[7]; 7742 switch (initiator_filter_policy) { 7743 case 0: 7744 // whitelist not used 7745 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7746 break; 7747 case 1: 7748 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7749 break; 7750 default: 7751 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7752 break; 7753 } 7754 // track outgoing connection 7755 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7756 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7757 break; 7758 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7759 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7760 // white list used? 7761 initiator_filter_policy = packet[3]; 7762 switch (initiator_filter_policy) { 7763 case 0: 7764 // whitelist not used 7765 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7766 break; 7767 case 1: 7768 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7769 break; 7770 default: 7771 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7772 break; 7773 } 7774 // track outgoing connection 7775 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7776 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7777 break; 7778 #endif 7779 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7780 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7781 break; 7782 #endif 7783 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7784 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7785 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7786 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7787 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7788 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7789 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7790 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7791 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7792 case HCI_OPCODE_HCI_LE_READ_PHY: 7793 case HCI_OPCODE_HCI_LE_SET_PHY: 7794 // conection handle is first command parameter 7795 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7796 break; 7797 #endif 7798 #endif /* ENABLE_BLE */ 7799 default: 7800 break; 7801 } 7802 7803 hci_stack->num_cmd_packets--; 7804 7805 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7806 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7807 if (err != 0){ 7808 return ERROR_CODE_HARDWARE_FAILURE; 7809 } 7810 return ERROR_CODE_SUCCESS; 7811 } 7812 7813 // disconnect because of security block 7814 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7815 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7816 if (!connection) return; 7817 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7818 } 7819 7820 7821 // Configure Secure Simple Pairing 7822 7823 #ifdef ENABLE_CLASSIC 7824 7825 // enable will enable SSP during init 7826 void gap_ssp_set_enable(int enable){ 7827 hci_stack->ssp_enable = enable; 7828 } 7829 7830 static int hci_local_ssp_activated(void){ 7831 return gap_ssp_supported() && hci_stack->ssp_enable; 7832 } 7833 7834 // if set, BTstack will respond to io capability request using authentication requirement 7835 void gap_ssp_set_io_capability(int io_capability){ 7836 hci_stack->ssp_io_capability = io_capability; 7837 } 7838 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7839 hci_stack->ssp_authentication_requirement = authentication_requirement; 7840 } 7841 7842 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7843 void gap_ssp_set_auto_accept(int auto_accept){ 7844 hci_stack->ssp_auto_accept = auto_accept; 7845 } 7846 7847 void gap_secure_connections_enable(bool enable){ 7848 hci_stack->secure_connections_enable = enable; 7849 } 7850 bool gap_secure_connections_active(void){ 7851 return hci_stack->secure_connections_active; 7852 } 7853 7854 #endif 7855 7856 // va_list part of hci_send_cmd 7857 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7858 if (!hci_can_send_command_packet_now()){ 7859 log_error("hci_send_cmd called but cannot send packet now"); 7860 return ERROR_CODE_COMMAND_DISALLOWED; 7861 } 7862 7863 // for HCI INITIALIZATION 7864 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7865 hci_stack->last_cmd_opcode = cmd->opcode; 7866 7867 hci_reserve_packet_buffer(); 7868 uint8_t * packet = hci_stack->hci_packet_buffer; 7869 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7870 uint8_t status = hci_send_cmd_packet(packet, size); 7871 7872 // release packet buffer on error or for synchronous transport implementations 7873 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7874 hci_release_packet_buffer(); 7875 hci_emit_transport_packet_sent(); 7876 } 7877 7878 return status; 7879 } 7880 7881 /** 7882 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7883 */ 7884 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7885 va_list argptr; 7886 va_start(argptr, cmd); 7887 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7888 va_end(argptr); 7889 return status; 7890 } 7891 7892 // Create various non-HCI events. 7893 // TODO: generalize, use table similar to hci_create_command 7894 7895 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7896 // dump packet 7897 if (dump) { 7898 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7899 } 7900 7901 // dispatch to all event handlers 7902 btstack_linked_list_iterator_t it; 7903 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7904 while (btstack_linked_list_iterator_has_next(&it)){ 7905 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7906 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7907 } 7908 } 7909 7910 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7911 if (!hci_stack->acl_packet_handler) return; 7912 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7913 } 7914 7915 #ifdef ENABLE_CLASSIC 7916 static void hci_notify_if_sco_can_send_now(void){ 7917 // notify SCO sender if waiting 7918 if (!hci_stack->sco_waiting_for_can_send_now) return; 7919 if (hci_can_send_sco_packet_now()){ 7920 hci_stack->sco_waiting_for_can_send_now = 0; 7921 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7922 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7923 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7924 } 7925 } 7926 7927 // parsing end emitting has been merged to reduce code size 7928 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7929 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7930 7931 uint8_t * eir_data; 7932 ad_context_t context; 7933 const uint8_t * name; 7934 uint8_t name_len; 7935 7936 if (size < 3) return; 7937 7938 int event_type = hci_event_packet_get_type(packet); 7939 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7940 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7941 7942 switch (event_type){ 7943 case HCI_EVENT_INQUIRY_RESULT: 7944 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7945 if (size != (3 + (num_responses * 14))) return; 7946 break; 7947 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7948 if (size != 257) return; 7949 if (num_responses != 1) return; 7950 break; 7951 default: 7952 return; 7953 } 7954 7955 // event[1] is set at the end 7956 int i; 7957 for (i=0; i<num_responses;i++){ 7958 memset(event, 0, sizeof(event)); 7959 event[0] = GAP_EVENT_INQUIRY_RESULT; 7960 uint8_t event_size = 27; // if name is not set by EIR 7961 7962 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7963 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7964 (void)memcpy(&event[9], 7965 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7966 3); // class of device 7967 (void)memcpy(&event[12], 7968 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7969 2); // clock offset 7970 7971 switch (event_type){ 7972 case HCI_EVENT_INQUIRY_RESULT: 7973 // 14,15,16,17 = 0, size 18 7974 break; 7975 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7976 event[14] = 1; 7977 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7978 // 16,17 = 0, size 18 7979 break; 7980 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7981 event[14] = 1; 7982 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7983 // EIR packets only contain a single inquiry response 7984 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7985 name = NULL; 7986 // Iterate over EIR data 7987 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7988 uint8_t data_type = ad_iterator_get_data_type(&context); 7989 uint8_t data_size = ad_iterator_get_data_len(&context); 7990 const uint8_t * data = ad_iterator_get_data(&context); 7991 // Prefer Complete Local Name over Shortened Local Name 7992 switch (data_type){ 7993 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7994 if (name) continue; 7995 /* fall through */ 7996 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7997 name = data; 7998 name_len = data_size; 7999 break; 8000 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8001 if (data_size != 8) break; 8002 event[16] = 1; 8003 memcpy(&event[17], data, 8); 8004 break; 8005 default: 8006 break; 8007 } 8008 } 8009 if (name){ 8010 event[25] = 1; 8011 // truncate name if needed 8012 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8013 event[26] = len; 8014 (void)memcpy(&event[27], name, len); 8015 event_size += len; 8016 } 8017 break; 8018 default: 8019 return; 8020 } 8021 event[1] = event_size - 2; 8022 hci_emit_event(event, event_size, 1); 8023 } 8024 } 8025 #endif 8026 8027 void hci_emit_state(void){ 8028 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8029 uint8_t event[3]; 8030 event[0] = BTSTACK_EVENT_STATE; 8031 event[1] = sizeof(event) - 2u; 8032 event[2] = hci_stack->state; 8033 hci_emit_event(event, sizeof(event), 1); 8034 } 8035 8036 #ifdef ENABLE_CLASSIC 8037 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8038 uint8_t event[13]; 8039 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8040 event[1] = sizeof(event) - 2; 8041 event[2] = status; 8042 little_endian_store_16(event, 3, con_handle); 8043 reverse_bd_addr(address, &event[5]); 8044 event[11] = 1; // ACL connection 8045 event[12] = 0; // encryption disabled 8046 hci_emit_event(event, sizeof(event), 1); 8047 } 8048 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8049 if (disable_l2cap_timeouts) return; 8050 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8051 uint8_t event[4]; 8052 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8053 event[1] = sizeof(event) - 2; 8054 little_endian_store_16(event, 2, conn->con_handle); 8055 hci_emit_event(event, sizeof(event), 1); 8056 } 8057 #endif 8058 8059 #ifdef ENABLE_BLE 8060 #ifdef ENABLE_LE_CENTRAL 8061 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){ 8062 uint8_t hci_event[21]; 8063 hci_event[0] = HCI_EVENT_LE_META; 8064 hci_event[1] = sizeof(hci_event) - 2u; 8065 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8066 hci_event[3] = status; 8067 little_endian_store_16(hci_event, 4, con_handle); 8068 hci_event[6] = 0; // TODO: role 8069 hci_event[7] = address_type; 8070 reverse_bd_addr(address, &hci_event[8]); 8071 little_endian_store_16(hci_event, 14, 0); // interval 8072 little_endian_store_16(hci_event, 16, 0); // latency 8073 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8074 hci_event[20] = 0; // master clock accuracy 8075 hci_emit_event(hci_event, sizeof(hci_event), 1); 8076 // emit GAP event, too 8077 uint8_t gap_event[36]; 8078 hci_create_gap_connection_complete_event(hci_event, gap_event); 8079 hci_emit_event(gap_event, sizeof(gap_event), 1); 8080 } 8081 #endif 8082 #endif 8083 8084 static void hci_emit_transport_packet_sent(void){ 8085 // notify upper stack that it might be possible to send again 8086 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8087 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8088 } 8089 8090 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8091 uint8_t event[6]; 8092 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8093 event[1] = sizeof(event) - 2u; 8094 event[2] = 0; // status = OK 8095 little_endian_store_16(event, 3, con_handle); 8096 event[5] = reason; 8097 hci_emit_event(event, sizeof(event), 1); 8098 } 8099 8100 static void hci_emit_nr_connections_changed(void){ 8101 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8102 uint8_t event[3]; 8103 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8104 event[1] = sizeof(event) - 2u; 8105 event[2] = nr_hci_connections(); 8106 hci_emit_event(event, sizeof(event), 1); 8107 } 8108 8109 static void hci_emit_hci_open_failed(void){ 8110 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8111 uint8_t event[2]; 8112 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8113 event[1] = sizeof(event) - 2u; 8114 hci_emit_event(event, sizeof(event), 1); 8115 } 8116 8117 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8118 log_info("hci_emit_dedicated_bonding_result %u ", status); 8119 uint8_t event[9]; 8120 int pos = 0; 8121 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8122 event[pos++] = sizeof(event) - 2u; 8123 event[pos++] = status; 8124 reverse_bd_addr(address, &event[pos]); 8125 hci_emit_event(event, sizeof(event), 1); 8126 } 8127 8128 8129 #ifdef ENABLE_CLASSIC 8130 8131 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8132 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8133 uint8_t event[5]; 8134 int pos = 0; 8135 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8136 event[pos++] = sizeof(event) - 2; 8137 little_endian_store_16(event, 2, con_handle); 8138 pos += 2; 8139 event[pos++] = level; 8140 hci_emit_event(event, sizeof(event), 1); 8141 } 8142 8143 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8144 if (!connection) return LEVEL_0; 8145 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8146 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8147 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8148 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8149 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8150 // LEVEL 4 always requires 128 bit encrytion key size 8151 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8152 security_level = LEVEL_3; 8153 } 8154 return security_level; 8155 } 8156 8157 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8158 uint8_t event[4]; 8159 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8160 event[1] = sizeof(event) - 2; 8161 event[2] = discoverable; 8162 event[3] = connectable; 8163 hci_emit_event(event, sizeof(event), 1); 8164 } 8165 8166 // query if remote side supports eSCO 8167 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8168 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8169 if (!connection) return false; 8170 return (connection->remote_supported_features[0] & 1) != 0; 8171 } 8172 8173 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8174 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8175 if (!connection) return 0; 8176 return connection->remote_supported_sco_packets; 8177 } 8178 8179 static bool hci_ssp_supported(hci_connection_t * connection){ 8180 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8181 return (connection->bonding_flags & mask) == mask; 8182 } 8183 8184 // query if remote side supports SSP 8185 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8186 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8187 if (!connection) return false; 8188 return hci_ssp_supported(connection) ? 1 : 0; 8189 } 8190 8191 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8192 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8193 } 8194 8195 /** 8196 * Check if remote supported features query has completed 8197 */ 8198 bool hci_remote_features_available(hci_con_handle_t handle){ 8199 hci_connection_t * connection = hci_connection_for_handle(handle); 8200 if (!connection) return false; 8201 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8202 } 8203 8204 /** 8205 * Trigger remote supported features query 8206 */ 8207 8208 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8209 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8210 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8211 } 8212 } 8213 8214 void hci_remote_features_query(hci_con_handle_t con_handle){ 8215 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8216 if (!connection) return; 8217 hci_trigger_remote_features_for_connection(connection); 8218 hci_run(); 8219 } 8220 8221 // GAP API 8222 /** 8223 * @bbrief enable/disable bonding. default is enabled 8224 * @praram enabled 8225 */ 8226 void gap_set_bondable_mode(int enable){ 8227 hci_stack->bondable = enable ? 1 : 0; 8228 } 8229 /** 8230 * @brief Get bondable mode. 8231 * @return 1 if bondable 8232 */ 8233 int gap_get_bondable_mode(void){ 8234 return hci_stack->bondable; 8235 } 8236 8237 /** 8238 * @brief map link keys to security levels 8239 */ 8240 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8241 switch (link_key_type){ 8242 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8243 return LEVEL_4; 8244 case COMBINATION_KEY: 8245 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8246 return LEVEL_3; 8247 default: 8248 return LEVEL_2; 8249 } 8250 } 8251 8252 /** 8253 * @brief map link keys to secure connection yes/no 8254 */ 8255 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8256 switch (link_key_type){ 8257 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8258 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8259 return true; 8260 default: 8261 return false; 8262 } 8263 } 8264 8265 /** 8266 * @brief map link keys to authenticated 8267 */ 8268 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8269 switch (link_key_type){ 8270 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8271 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8272 return true; 8273 default: 8274 return false; 8275 } 8276 } 8277 8278 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8279 log_info("gap_mitm_protection_required_for_security_level %u", level); 8280 return level > LEVEL_2; 8281 } 8282 8283 /** 8284 * @brief get current security level 8285 */ 8286 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8287 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8288 if (!connection) return LEVEL_0; 8289 return gap_security_level_for_connection(connection); 8290 } 8291 8292 /** 8293 * @brief request connection to device to 8294 * @result GAP_AUTHENTICATION_RESULT 8295 */ 8296 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8297 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8298 if (!connection){ 8299 hci_emit_security_level(con_handle, LEVEL_0); 8300 return; 8301 } 8302 8303 btstack_assert(hci_is_le_connection(connection) == false); 8304 8305 // 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) 8306 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8307 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8308 requested_level = LEVEL_4; 8309 } 8310 8311 gap_security_level_t current_level = gap_security_level(con_handle); 8312 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8313 requested_level, connection->requested_security_level, current_level); 8314 8315 // authentication active if authentication request was sent or planned level > 0 8316 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8317 if (authentication_active){ 8318 // authentication already active 8319 if (connection->requested_security_level < requested_level){ 8320 // increase requested level as new level is higher 8321 // TODO: handle re-authentication when done 8322 connection->requested_security_level = requested_level; 8323 } 8324 } else { 8325 // no request active, notify if security sufficient 8326 if (requested_level <= current_level){ 8327 hci_emit_security_level(con_handle, current_level); 8328 return; 8329 } 8330 8331 // store request 8332 connection->requested_security_level = requested_level; 8333 8334 // start to authenticate connection 8335 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8336 8337 // request remote features if not already active, also trigger hci_run 8338 hci_remote_features_query(con_handle); 8339 } 8340 } 8341 8342 /** 8343 * @brief start dedicated bonding with device. disconnect after bonding 8344 * @param device 8345 * @param request MITM protection 8346 * @result GAP_DEDICATED_BONDING_COMPLETE 8347 */ 8348 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8349 8350 // create connection state machine 8351 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8352 8353 if (!connection){ 8354 return BTSTACK_MEMORY_ALLOC_FAILED; 8355 } 8356 8357 // delete link key 8358 gap_drop_link_key_for_bd_addr(device); 8359 8360 // configure LEVEL_2/3, dedicated bonding 8361 connection->state = SEND_CREATE_CONNECTION; 8362 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8363 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8364 connection->bonding_flags = BONDING_DEDICATED; 8365 8366 hci_run(); 8367 8368 return 0; 8369 } 8370 8371 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8372 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8373 if (connection == NULL){ 8374 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8375 } 8376 if (defer){ 8377 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8378 } else { 8379 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8380 // trigger disconnect 8381 hci_run(); 8382 } 8383 return ERROR_CODE_SUCCESS; 8384 } 8385 8386 void gap_set_local_name(const char * local_name){ 8387 hci_stack->local_name = local_name; 8388 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8389 // also update EIR if not set by user 8390 if (hci_stack->eir_data == NULL){ 8391 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8392 } 8393 hci_run(); 8394 } 8395 #endif 8396 8397 8398 #ifdef ENABLE_BLE 8399 8400 #ifdef ENABLE_LE_CENTRAL 8401 void gap_start_scan(void){ 8402 hci_stack->le_scanning_enabled = true; 8403 hci_run(); 8404 } 8405 8406 void gap_stop_scan(void){ 8407 hci_stack->le_scanning_enabled = false; 8408 hci_run(); 8409 } 8410 8411 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8412 hci_stack->le_scan_type = scan_type; 8413 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8414 hci_stack->le_scan_interval = scan_interval; 8415 hci_stack->le_scan_window = scan_window; 8416 hci_stack->le_scanning_param_update = true; 8417 hci_run(); 8418 } 8419 8420 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8421 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8422 } 8423 8424 void gap_set_scan_duplicate_filter(bool enabled){ 8425 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8426 } 8427 8428 void gap_set_scan_phys(uint8_t phys){ 8429 // LE Coded and LE 1M PHY 8430 hci_stack->le_scan_phys = phys & 0x05; 8431 } 8432 8433 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8434 // disallow le connection if outgoing already active 8435 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8436 log_error("le connect already active"); 8437 return ERROR_CODE_COMMAND_DISALLOWED; 8438 } 8439 8440 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8441 if (conn == NULL) { 8442 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8443 if (conn == false){ 8444 // alloc failed 8445 log_info("gap_connect: failed to alloc hci_connection_t"); 8446 return BTSTACK_MEMORY_ALLOC_FAILED; 8447 } 8448 } else { 8449 switch (conn->state) { 8450 case RECEIVED_DISCONNECTION_COMPLETE: 8451 // connection was just disconnected, reset state and allow re-connect 8452 conn->role = HCI_ROLE_MASTER; 8453 break; 8454 default: 8455 return ERROR_CODE_COMMAND_DISALLOWED; 8456 } 8457 } 8458 8459 // set le connecting state 8460 if (hci_is_le_connection_type(addr_type)){ 8461 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8462 } 8463 8464 // trigger connect 8465 log_info("gap_connect: send create connection next"); 8466 conn->state = SEND_CREATE_CONNECTION; 8467 hci_run(); 8468 return ERROR_CODE_SUCCESS; 8469 } 8470 8471 // @assumption: only a single outgoing LE Connection exists 8472 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8473 btstack_linked_item_t *it; 8474 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8475 hci_connection_t * conn = (hci_connection_t *) it; 8476 if (hci_is_le_connection(conn)){ 8477 switch (conn->state){ 8478 case SEND_CREATE_CONNECTION: 8479 case SENT_CREATE_CONNECTION: 8480 return conn; 8481 default: 8482 break; 8483 }; 8484 } 8485 } 8486 return NULL; 8487 } 8488 8489 uint8_t gap_connect_cancel(void){ 8490 hci_connection_t * conn; 8491 switch (hci_stack->le_connecting_request){ 8492 case LE_CONNECTING_IDLE: 8493 break; 8494 case LE_CONNECTING_WHITELIST: 8495 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8496 hci_run(); 8497 break; 8498 case LE_CONNECTING_DIRECT: 8499 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8500 conn = gap_get_outgoing_le_connection(); 8501 if (conn == NULL){ 8502 hci_run(); 8503 } else { 8504 switch (conn->state){ 8505 case SEND_CREATE_CONNECTION: 8506 // skip sending create connection and emit event instead 8507 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8508 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8509 btstack_memory_hci_connection_free( conn ); 8510 break; 8511 case SENT_CREATE_CONNECTION: 8512 // let hci_run_general_gap_le cancel outgoing connection 8513 hci_run(); 8514 break; 8515 default: 8516 break; 8517 } 8518 } 8519 break; 8520 default: 8521 btstack_unreachable(); 8522 break; 8523 } 8524 return ERROR_CODE_SUCCESS; 8525 } 8526 8527 /** 8528 * @brief Set connection parameters for outgoing connections 8529 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8530 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8531 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8532 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8533 * @param conn_latency, default: 4 8534 * @param supervision_timeout (unit: 10ms), default: 720 ms 8535 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8536 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8537 */ 8538 8539 void gap_set_connection_phys(uint8_t phys){ 8540 // LE Coded, LE 1M, LE 2M PHY 8541 hci_stack->le_connection_phys = phys & 7; 8542 } 8543 8544 #endif 8545 8546 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8547 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8548 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8549 hci_stack->le_connection_scan_interval = conn_scan_interval; 8550 hci_stack->le_connection_scan_window = conn_scan_window; 8551 hci_stack->le_connection_interval_min = conn_interval_min; 8552 hci_stack->le_connection_interval_max = conn_interval_max; 8553 hci_stack->le_connection_latency = conn_latency; 8554 hci_stack->le_supervision_timeout = supervision_timeout; 8555 hci_stack->le_minimum_ce_length = min_ce_length; 8556 hci_stack->le_maximum_ce_length = max_ce_length; 8557 } 8558 8559 /** 8560 * @brief Updates the connection parameters for a given LE connection 8561 * @param handle 8562 * @param conn_interval_min (unit: 1.25ms) 8563 * @param conn_interval_max (unit: 1.25ms) 8564 * @param conn_latency 8565 * @param supervision_timeout (unit: 10ms) 8566 * @return 0 if ok 8567 */ 8568 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8569 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8570 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8571 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8572 connection->le_conn_interval_min = conn_interval_min; 8573 connection->le_conn_interval_max = conn_interval_max; 8574 connection->le_conn_latency = conn_latency; 8575 connection->le_supervision_timeout = supervision_timeout; 8576 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8577 hci_run(); 8578 return 0; 8579 } 8580 8581 /** 8582 * @brief Request an update of the connection parameter for a given LE connection 8583 * @param handle 8584 * @param conn_interval_min (unit: 1.25ms) 8585 * @param conn_interval_max (unit: 1.25ms) 8586 * @param conn_latency 8587 * @param supervision_timeout (unit: 10ms) 8588 * @return 0 if ok 8589 */ 8590 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8591 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8592 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8593 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8594 connection->le_conn_interval_min = conn_interval_min; 8595 connection->le_conn_interval_max = conn_interval_max; 8596 connection->le_conn_latency = conn_latency; 8597 connection->le_supervision_timeout = supervision_timeout; 8598 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8599 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8600 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8601 return 0; 8602 } 8603 8604 #ifdef ENABLE_LE_PERIPHERAL 8605 8606 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8607 static void hci_assert_advertisement_set_0_ready(void){ 8608 // force advertising set creation for legacy LE Advertising 8609 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8610 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8611 } 8612 } 8613 #endif 8614 8615 /** 8616 * @brief Set Advertisement Data 8617 * @param advertising_data_length 8618 * @param advertising_data (max 31 octets) 8619 * @note data is not copied, pointer has to stay valid 8620 */ 8621 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8622 hci_stack->le_advertisements_data_len = advertising_data_length; 8623 hci_stack->le_advertisements_data = advertising_data; 8624 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8625 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8626 hci_assert_advertisement_set_0_ready(); 8627 #endif 8628 hci_run(); 8629 } 8630 8631 /** 8632 * @brief Set Scan Response Data 8633 * @param advertising_data_length 8634 * @param advertising_data (max 31 octets) 8635 * @note data is not copied, pointer has to stay valid 8636 */ 8637 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8638 hci_stack->le_scan_response_data_len = scan_response_data_length; 8639 hci_stack->le_scan_response_data = scan_response_data; 8640 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8641 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8642 hci_assert_advertisement_set_0_ready(); 8643 #endif 8644 hci_run(); 8645 } 8646 8647 /** 8648 * @brief Set Advertisement Parameters 8649 * @param adv_int_min 8650 * @param adv_int_max 8651 * @param adv_type 8652 * @param direct_address_type 8653 * @param direct_address 8654 * @param channel_map 8655 * @param filter_policy 8656 * 8657 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8658 */ 8659 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8660 uint8_t direct_address_typ, bd_addr_t direct_address, 8661 uint8_t channel_map, uint8_t filter_policy) { 8662 8663 hci_stack->le_advertisements_interval_min = adv_int_min; 8664 hci_stack->le_advertisements_interval_max = adv_int_max; 8665 hci_stack->le_advertisements_type = adv_type; 8666 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8667 hci_stack->le_advertisements_channel_map = channel_map; 8668 hci_stack->le_advertisements_filter_policy = filter_policy; 8669 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8670 6); 8671 8672 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8673 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8674 hci_run(); 8675 } 8676 8677 /** 8678 * @brief Enable/Disable Advertisements 8679 * @param enabled 8680 */ 8681 void gap_advertisements_enable(int enabled){ 8682 if (enabled == 0){ 8683 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8684 } else { 8685 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8686 } 8687 hci_update_advertisements_enabled_for_current_roles(); 8688 hci_run(); 8689 } 8690 8691 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8692 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8693 btstack_linked_list_iterator_t it; 8694 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8695 while (btstack_linked_list_iterator_has_next(&it)){ 8696 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8697 if ( item->advertising_handle == advertising_handle ) { 8698 return item; 8699 } 8700 } 8701 return NULL; 8702 } 8703 8704 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8705 hci_stack->le_resolvable_private_address_update_s = update_s; 8706 hci_run(); 8707 return ERROR_CODE_SUCCESS; 8708 } 8709 8710 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8711 // find free advertisement handle 8712 uint8_t advertisement_handle; 8713 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8714 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8715 } 8716 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8717 // clear 8718 memset(storage, 0, sizeof(le_advertising_set_t)); 8719 // copy params 8720 storage->advertising_handle = advertisement_handle; 8721 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8722 // add to list 8723 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8724 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8725 *out_advertising_handle = advertisement_handle; 8726 // set tasks and start 8727 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8728 hci_run(); 8729 return ERROR_CODE_SUCCESS; 8730 } 8731 8732 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8733 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8734 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8735 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8736 // set tasks and start 8737 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8738 hci_run(); 8739 return ERROR_CODE_SUCCESS; 8740 } 8741 8742 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8743 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8744 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8745 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8746 return ERROR_CODE_SUCCESS; 8747 } 8748 8749 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8750 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8751 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8752 memcpy(advertising_set->random_address, random_address, 6); 8753 // set tasks and start 8754 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8755 hci_run(); 8756 return ERROR_CODE_SUCCESS; 8757 } 8758 8759 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 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 advertising_set->adv_data = advertising_data; 8763 advertising_set->adv_data_len = advertising_data_length; 8764 // set tasks and start 8765 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8766 hci_run(); 8767 return ERROR_CODE_SUCCESS; 8768 } 8769 8770 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){ 8771 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8772 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8773 advertising_set->scan_data = scan_response_data; 8774 advertising_set->scan_data_len = scan_response_data_length; 8775 // set tasks and start 8776 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8777 hci_run(); 8778 return ERROR_CODE_SUCCESS; 8779 } 8780 8781 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8782 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8783 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8784 advertising_set->enable_timeout = timeout; 8785 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8786 // set tasks and start 8787 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8788 hci_run(); 8789 return ERROR_CODE_SUCCESS; 8790 } 8791 8792 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8793 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8794 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8795 // set tasks and start 8796 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8797 hci_run(); 8798 return ERROR_CODE_SUCCESS; 8799 } 8800 8801 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8802 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8803 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8804 // set tasks and start 8805 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8806 hci_run(); 8807 return ERROR_CODE_SUCCESS; 8808 } 8809 8810 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8811 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8812 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8813 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8814 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8815 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8816 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8817 // set tasks and start 8818 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8819 hci_run(); 8820 return ERROR_CODE_SUCCESS; 8821 } 8822 8823 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8824 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8825 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8826 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8827 return ERROR_CODE_SUCCESS; 8828 } 8829 8830 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8831 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8832 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8833 advertising_set->periodic_data = periodic_data; 8834 advertising_set->periodic_data_len = periodic_data_length; 8835 // set tasks and start 8836 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8837 hci_run(); 8838 return ERROR_CODE_SUCCESS; 8839 } 8840 8841 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8842 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8843 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8844 // set tasks and start 8845 advertising_set->periodic_include_adi = include_adi; 8846 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8847 hci_run(); 8848 return ERROR_CODE_SUCCESS; 8849 } 8850 8851 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8852 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8853 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8854 // set tasks and start 8855 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8856 hci_run(); 8857 return ERROR_CODE_SUCCESS; 8858 } 8859 8860 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8861 hci_stack->le_past_mode = mode; 8862 hci_stack->le_past_skip = skip; 8863 hci_stack->le_past_sync_timeout = sync_timeout; 8864 hci_stack->le_past_cte_type = cte_type; 8865 hci_stack->le_past_set_default_params = true; 8866 hci_run(); 8867 return ERROR_CODE_SUCCESS; 8868 } 8869 8870 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8871 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8872 if (hci_connection == NULL){ 8873 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8874 } 8875 hci_connection->le_past_sync_handle = sync_handle; 8876 hci_connection->le_past_service_data = service_data; 8877 hci_run(); 8878 return ERROR_CODE_SUCCESS; 8879 } 8880 8881 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8882 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8883 if (hci_connection == NULL){ 8884 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8885 } 8886 hci_connection->le_past_advertising_handle = advertising_handle; 8887 hci_connection->le_past_service_data = service_data; 8888 hci_run(); 8889 return ERROR_CODE_SUCCESS; 8890 } 8891 8892 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8893 8894 #endif 8895 8896 #endif 8897 8898 void hci_le_set_own_address_type(uint8_t own_address_type){ 8899 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8900 if (own_address_type == hci_stack->le_own_addr_type) return; 8901 hci_stack->le_own_addr_type = own_address_type; 8902 8903 #ifdef ENABLE_LE_PERIPHERAL 8904 // update advertisement parameters, too 8905 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8906 hci_run(); 8907 #endif 8908 #ifdef ENABLE_LE_CENTRAL 8909 // note: we don't update scan parameters or modify ongoing connection attempts 8910 #endif 8911 } 8912 8913 void hci_le_random_address_set(const bd_addr_t random_address){ 8914 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8915 memcpy(hci_stack->le_random_address, random_address, 6); 8916 hci_stack->le_random_address_set = true; 8917 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8918 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8919 if (hci_le_extended_advertising_supported()){ 8920 hci_assert_advertisement_set_0_ready(); 8921 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8922 } 8923 #endif 8924 hci_run(); 8925 } 8926 8927 #endif 8928 8929 uint8_t gap_disconnect(hci_con_handle_t handle){ 8930 hci_connection_t * conn = hci_connection_for_handle(handle); 8931 if (!conn){ 8932 hci_emit_disconnection_complete(handle, 0); 8933 return 0; 8934 } 8935 // ignore if already disconnected 8936 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8937 return 0; 8938 } 8939 conn->state = SEND_DISCONNECT; 8940 hci_run(); 8941 return 0; 8942 } 8943 8944 int gap_read_rssi(hci_con_handle_t con_handle){ 8945 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8946 if (hci_connection == NULL) return 0; 8947 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8948 hci_run(); 8949 return 1; 8950 } 8951 8952 /** 8953 * @brief Get connection type 8954 * @param con_handle 8955 * @result connection_type 8956 */ 8957 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8958 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8959 if (!conn) return GAP_CONNECTION_INVALID; 8960 switch (conn->address_type){ 8961 case BD_ADDR_TYPE_LE_PUBLIC: 8962 case BD_ADDR_TYPE_LE_RANDOM: 8963 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8964 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8965 return GAP_CONNECTION_LE; 8966 case BD_ADDR_TYPE_SCO: 8967 return GAP_CONNECTION_SCO; 8968 case BD_ADDR_TYPE_ACL: 8969 return GAP_CONNECTION_ACL; 8970 default: 8971 return GAP_CONNECTION_INVALID; 8972 } 8973 } 8974 8975 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8976 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8977 if (!conn) return HCI_ROLE_INVALID; 8978 return (hci_role_t) conn->role; 8979 } 8980 8981 8982 #ifdef ENABLE_CLASSIC 8983 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8984 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8985 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8986 conn->request_role = role; 8987 hci_run(); 8988 return ERROR_CODE_SUCCESS; 8989 } 8990 #endif 8991 8992 #ifdef ENABLE_BLE 8993 8994 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){ 8995 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8996 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8997 8998 conn->le_phy_update_all_phys = all_phys; 8999 conn->le_phy_update_tx_phys = tx_phys; 9000 conn->le_phy_update_rx_phys = rx_phys; 9001 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9002 9003 hci_run(); 9004 9005 return 0; 9006 } 9007 9008 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9009 9010 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9011 // incorrect configuration: 9012 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9013 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9014 btstack_assert(false); 9015 #endif 9016 9017 // check if already in list 9018 btstack_linked_list_iterator_t it; 9019 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9020 while (btstack_linked_list_iterator_has_next(&it)) { 9021 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9022 if (entry->address_type != address_type) { 9023 continue; 9024 } 9025 if (memcmp(entry->address, address, 6) != 0) { 9026 continue; 9027 } 9028 9029 // if already on controller: 9030 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9031 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9032 // drop remove request 9033 entry->state = LE_WHITELIST_ON_CONTROLLER; 9034 return ERROR_CODE_SUCCESS; 9035 } else { 9036 // disallow as already on controller 9037 return ERROR_CODE_COMMAND_DISALLOWED; 9038 } 9039 } 9040 9041 // assume scheduled to add 9042 return ERROR_CODE_COMMAND_DISALLOWED; 9043 } 9044 9045 // alloc and add to list 9046 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9047 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9048 entry->address_type = address_type; 9049 (void)memcpy(entry->address, address, 6); 9050 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9051 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9052 return ERROR_CODE_SUCCESS; 9053 } 9054 9055 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9056 btstack_linked_list_iterator_t it; 9057 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9058 while (btstack_linked_list_iterator_has_next(&it)){ 9059 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9060 if (entry->address_type != address_type) { 9061 continue; 9062 } 9063 if (memcmp(entry->address, address, 6) != 0) { 9064 continue; 9065 } 9066 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9067 // remove from controller if already present 9068 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9069 } else { 9070 // directly remove entry from whitelist 9071 btstack_linked_list_iterator_remove(&it); 9072 btstack_memory_whitelist_entry_free(entry); 9073 } 9074 return ERROR_CODE_SUCCESS; 9075 } 9076 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9077 } 9078 9079 static void hci_whitelist_clear(void){ 9080 btstack_linked_list_iterator_t it; 9081 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9082 while (btstack_linked_list_iterator_has_next(&it)){ 9083 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9084 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9085 // remove from controller if already present 9086 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9087 continue; 9088 } 9089 // directly remove entry from whitelist 9090 btstack_linked_list_iterator_remove(&it); 9091 btstack_memory_whitelist_entry_free(entry); 9092 } 9093 } 9094 9095 /** 9096 * @brief Clear Whitelist 9097 * @return 0 if ok 9098 */ 9099 uint8_t gap_whitelist_clear(void){ 9100 hci_whitelist_clear(); 9101 hci_run(); 9102 return ERROR_CODE_SUCCESS; 9103 } 9104 9105 /** 9106 * @brief Add Device to Whitelist 9107 * @param address_typ 9108 * @param address 9109 * @return 0 if ok 9110 */ 9111 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9112 uint8_t status = hci_whitelist_add(address_type, address); 9113 if (status){ 9114 return status; 9115 } 9116 hci_run(); 9117 return ERROR_CODE_SUCCESS; 9118 } 9119 9120 /** 9121 * @brief Remove Device from Whitelist 9122 * @param address_typ 9123 * @param address 9124 * @return 0 if ok 9125 */ 9126 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9127 uint8_t status = hci_whitelist_remove(address_type, address); 9128 if (status){ 9129 return status; 9130 } 9131 hci_run(); 9132 return ERROR_CODE_SUCCESS; 9133 } 9134 9135 #ifdef ENABLE_LE_CENTRAL 9136 /** 9137 * @brief Connect with Whitelist 9138 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9139 * @return - if ok 9140 */ 9141 uint8_t gap_connect_with_whitelist(void){ 9142 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9143 return ERROR_CODE_COMMAND_DISALLOWED; 9144 } 9145 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9146 hci_run(); 9147 return ERROR_CODE_SUCCESS; 9148 } 9149 9150 /** 9151 * @brief Auto Connection Establishment - Start Connecting to device 9152 * @param address_typ 9153 * @param address 9154 * @return 0 if ok 9155 */ 9156 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9157 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9158 return ERROR_CODE_COMMAND_DISALLOWED; 9159 } 9160 9161 uint8_t status = hci_whitelist_add(address_type, address); 9162 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9163 return status; 9164 } 9165 9166 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9167 9168 hci_run(); 9169 return ERROR_CODE_SUCCESS; 9170 } 9171 9172 /** 9173 * @brief Auto Connection Establishment - Stop Connecting to device 9174 * @param address_typ 9175 * @param address 9176 * @return 0 if ok 9177 */ 9178 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9179 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9180 return ERROR_CODE_COMMAND_DISALLOWED; 9181 } 9182 9183 hci_whitelist_remove(address_type, address); 9184 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9185 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9186 } 9187 hci_run(); 9188 return 0; 9189 } 9190 9191 /** 9192 * @brief Auto Connection Establishment - Stop everything 9193 * @note Convenience function to stop all active auto connection attempts 9194 */ 9195 uint8_t gap_auto_connection_stop_all(void){ 9196 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9197 return ERROR_CODE_COMMAND_DISALLOWED; 9198 } 9199 hci_whitelist_clear(); 9200 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9201 hci_run(); 9202 return ERROR_CODE_SUCCESS; 9203 } 9204 9205 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9206 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9207 if (!conn) return 0; 9208 return conn->le_connection_interval; 9209 } 9210 #endif 9211 #endif 9212 9213 #ifdef ENABLE_CLASSIC 9214 /** 9215 * @brief Set Extended Inquiry Response data 9216 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9217 * @note has to be done before stack starts up 9218 */ 9219 void gap_set_extended_inquiry_response(const uint8_t * data){ 9220 hci_stack->eir_data = data; 9221 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9222 hci_run(); 9223 } 9224 9225 /** 9226 * @brief Start GAP Classic Inquiry 9227 * @param duration in 1.28s units 9228 * @return 0 if ok 9229 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9230 */ 9231 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9232 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9233 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9234 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9235 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9236 } 9237 hci_stack->inquiry_state = duration_in_1280ms_units; 9238 hci_stack->inquiry_max_period_length = 0; 9239 hci_stack->inquiry_min_period_length = 0; 9240 hci_run(); 9241 return 0; 9242 } 9243 9244 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9245 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9246 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9247 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9248 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9249 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9250 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9251 9252 hci_stack->inquiry_state = duration; 9253 hci_stack->inquiry_max_period_length = max_period_length; 9254 hci_stack->inquiry_min_period_length = min_period_length; 9255 hci_run(); 9256 return 0; 9257 } 9258 9259 /** 9260 * @brief Stop GAP Classic Inquiry 9261 * @return 0 if ok 9262 */ 9263 int gap_inquiry_stop(void){ 9264 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9265 // emit inquiry complete event, before it even started 9266 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9267 hci_emit_event(event, sizeof(event), 1); 9268 return 0; 9269 } 9270 switch (hci_stack->inquiry_state){ 9271 case GAP_INQUIRY_STATE_ACTIVE: 9272 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9273 hci_run(); 9274 return ERROR_CODE_SUCCESS; 9275 case GAP_INQUIRY_STATE_PERIODIC: 9276 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9277 hci_run(); 9278 return ERROR_CODE_SUCCESS; 9279 default: 9280 return ERROR_CODE_COMMAND_DISALLOWED; 9281 } 9282 } 9283 9284 void gap_inquiry_set_lap(uint32_t lap){ 9285 hci_stack->inquiry_lap = lap; 9286 } 9287 9288 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9289 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9290 hci_stack->inquiry_scan_window = inquiry_scan_window; 9291 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9292 hci_run(); 9293 } 9294 9295 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9296 { 9297 hci_stack->inquiry_tx_power_level = tx_power; 9298 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9299 hci_run(); 9300 } 9301 9302 9303 /** 9304 * @brief Remote Name Request 9305 * @param addr 9306 * @param page_scan_repetition_mode 9307 * @param clock_offset only used when bit 15 is set 9308 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9309 */ 9310 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9311 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9312 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9313 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9314 hci_stack->remote_name_clock_offset = clock_offset; 9315 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9316 hci_run(); 9317 return 0; 9318 } 9319 9320 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9321 hci_stack->gap_pairing_state = state; 9322 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9323 hci_run(); 9324 return 0; 9325 } 9326 9327 /** 9328 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9329 * @param addr 9330 * @param pin_data 9331 * @param pin_len 9332 * @return 0 if ok 9333 */ 9334 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9335 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9336 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9337 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9338 hci_stack->gap_pairing_pin_len = pin_len; 9339 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9340 } 9341 9342 /** 9343 * @brief Legacy Pairing Pin Code Response 9344 * @param addr 9345 * @param pin 9346 * @return 0 if ok 9347 */ 9348 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9349 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9350 } 9351 9352 /** 9353 * @brief Abort Legacy Pairing 9354 * @param addr 9355 * @param pin 9356 * @return 0 if ok 9357 */ 9358 int gap_pin_code_negative(bd_addr_t addr){ 9359 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9360 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9361 } 9362 9363 /** 9364 * @brief SSP Passkey Response 9365 * @param addr 9366 * @param passkey 9367 * @return 0 if ok 9368 */ 9369 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9370 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9371 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9372 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9373 } 9374 9375 /** 9376 * @brief Abort SSP Passkey Entry/Pairing 9377 * @param addr 9378 * @param pin 9379 * @return 0 if ok 9380 */ 9381 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9382 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9383 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9384 } 9385 9386 /** 9387 * @brief Accept SSP Numeric Comparison 9388 * @param addr 9389 * @param passkey 9390 * @return 0 if ok 9391 */ 9392 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9393 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9394 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9395 } 9396 9397 /** 9398 * @brief Abort SSP Numeric Comparison/Pairing 9399 * @param addr 9400 * @param pin 9401 * @return 0 if ok 9402 */ 9403 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9404 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9405 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9406 } 9407 9408 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9409 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9410 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9411 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9412 connectionSetAuthenticationFlags(conn, flag); 9413 hci_run(); 9414 return ERROR_CODE_SUCCESS; 9415 } 9416 #endif 9417 9418 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9419 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9420 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9421 } 9422 9423 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9424 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9425 } 9426 #endif 9427 9428 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9429 /** 9430 * @brief Report Remote OOB Data 9431 * @param bd_addr 9432 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9433 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9434 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9435 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9436 */ 9437 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){ 9438 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9439 if (connection == NULL) { 9440 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9441 } 9442 connection->classic_oob_c_192 = c_192; 9443 connection->classic_oob_r_192 = r_192; 9444 9445 // ignore P-256 if not supported by us 9446 if (hci_stack->secure_connections_active){ 9447 connection->classic_oob_c_256 = c_256; 9448 connection->classic_oob_r_256 = r_256; 9449 } 9450 9451 return ERROR_CODE_SUCCESS; 9452 } 9453 /** 9454 * @brief Generate new OOB data 9455 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9456 */ 9457 void gap_ssp_generate_oob_data(void){ 9458 hci_stack->classic_read_local_oob_data = true; 9459 hci_run(); 9460 } 9461 9462 #endif 9463 9464 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9465 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9466 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9467 if (connection == NULL) { 9468 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9469 } 9470 9471 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9472 connection->link_key_type = type; 9473 9474 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9475 } 9476 9477 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9478 /** 9479 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9480 * @param inquiry_mode see bluetooth_defines.h 9481 */ 9482 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9483 hci_stack->inquiry_mode = inquiry_mode; 9484 } 9485 9486 /** 9487 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9488 */ 9489 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9490 hci_stack->sco_voice_setting = voice_setting; 9491 } 9492 9493 /** 9494 * @brief Get SCO Voice Setting 9495 * @return current voice setting 9496 */ 9497 uint16_t hci_get_sco_voice_setting(void){ 9498 return hci_stack->sco_voice_setting; 9499 } 9500 9501 static int hci_have_usb_transport(void){ 9502 if (!hci_stack->hci_transport) return 0; 9503 const char * transport_name = hci_stack->hci_transport->name; 9504 if (!transport_name) return 0; 9505 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9506 } 9507 9508 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9509 uint16_t sco_packet_length = 0; 9510 9511 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9512 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9513 int multiplier; 9514 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9515 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9516 multiplier = 2; 9517 } else { 9518 multiplier = 1; 9519 } 9520 #endif 9521 9522 #ifdef ENABLE_SCO_OVER_HCI 9523 if (hci_have_usb_transport()){ 9524 // see Core Spec for H2 USB Transfer. 9525 // 3 byte SCO header + 24 bytes per connection 9526 // @note multiple sco connections not supported currently 9527 sco_packet_length = 3 + 24 * multiplier; 9528 } else { 9529 // 3 byte SCO header + SCO packet length over the air 9530 sco_packet_length = 3 + payload_size * multiplier; 9531 // assert that it still fits inside an SCO buffer 9532 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9533 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9534 } 9535 } 9536 #endif 9537 #ifdef HAVE_SCO_TRANSPORT 9538 // 3 byte SCO header + SCO packet length over the air 9539 sco_packet_length = 3 + payload_size * multiplier; 9540 // assert that it still fits inside an SCO buffer 9541 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9542 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9543 } 9544 #endif 9545 return sco_packet_length; 9546 } 9547 9548 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9549 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9550 if (connection != NULL){ 9551 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9552 } 9553 return 0; 9554 } 9555 9556 uint16_t hci_get_sco_packet_length(void){ 9557 btstack_linked_list_iterator_t it; 9558 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9559 while (btstack_linked_list_iterator_has_next(&it)){ 9560 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9561 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9562 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9563 } 9564 } 9565 return 0; 9566 } 9567 9568 /** 9569 * @brief Sets the master/slave policy 9570 * @param policy (0: attempt to become master, 1: let connecting device decide) 9571 */ 9572 void hci_set_master_slave_policy(uint8_t policy){ 9573 hci_stack->master_slave_policy = policy; 9574 } 9575 9576 #endif 9577 9578 HCI_STATE hci_get_state(void){ 9579 return hci_stack->state; 9580 } 9581 9582 #ifdef ENABLE_CLASSIC 9583 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9584 hci_stack->gap_classic_accept_callback = accept_callback; 9585 } 9586 #endif 9587 9588 /** 9589 * @brief Set callback for Bluetooth Hardware Error 9590 */ 9591 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9592 hci_stack->hardware_error_callback = fn; 9593 } 9594 9595 void hci_disconnect_all(void){ 9596 btstack_linked_list_iterator_t it; 9597 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9598 while (btstack_linked_list_iterator_has_next(&it)){ 9599 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9600 if (con->state == SENT_DISCONNECT) continue; 9601 con->state = SEND_DISCONNECT; 9602 } 9603 hci_run(); 9604 } 9605 9606 uint16_t hci_get_manufacturer(void){ 9607 return hci_stack->manufacturer; 9608 } 9609 9610 #ifdef ENABLE_BLE 9611 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9612 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9613 if (!hci_con) return NULL; 9614 return &hci_con->sm_connection; 9615 } 9616 9617 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9618 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9619 #endif 9620 9621 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9622 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9623 if (hci_connection == NULL) return 0; 9624 if (hci_is_le_connection(hci_connection)){ 9625 #ifdef ENABLE_BLE 9626 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9627 if (sm_conn->sm_connection_encrypted != 0u) { 9628 return sm_conn->sm_actual_encryption_key_size; 9629 } 9630 #endif 9631 } else { 9632 #ifdef ENABLE_CLASSIC 9633 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9634 return hci_connection->encryption_key_size; 9635 } 9636 #endif 9637 } 9638 return 0; 9639 } 9640 9641 bool gap_authenticated(hci_con_handle_t con_handle){ 9642 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9643 if (hci_connection == NULL) return false; 9644 9645 switch (hci_connection->address_type){ 9646 #ifdef ENABLE_BLE 9647 case BD_ADDR_TYPE_LE_PUBLIC: 9648 case BD_ADDR_TYPE_LE_RANDOM: 9649 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9650 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9651 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9652 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9653 #endif 9654 #ifdef ENABLE_CLASSIC 9655 case BD_ADDR_TYPE_SCO: 9656 case BD_ADDR_TYPE_ACL: 9657 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9658 #endif 9659 default: 9660 return false; 9661 } 9662 } 9663 9664 bool gap_secure_connection(hci_con_handle_t con_handle){ 9665 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9666 if (hci_connection == NULL) return 0; 9667 9668 switch (hci_connection->address_type){ 9669 #ifdef ENABLE_BLE 9670 case BD_ADDR_TYPE_LE_PUBLIC: 9671 case BD_ADDR_TYPE_LE_RANDOM: 9672 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9673 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9674 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9675 return hci_connection->sm_connection.sm_connection_sc; 9676 #endif 9677 #ifdef ENABLE_CLASSIC 9678 case BD_ADDR_TYPE_SCO: 9679 case BD_ADDR_TYPE_ACL: 9680 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9681 #endif 9682 default: 9683 return false; 9684 } 9685 } 9686 9687 bool gap_bonded(hci_con_handle_t con_handle){ 9688 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9689 if (hci_connection == NULL) return 0; 9690 9691 #ifdef ENABLE_CLASSIC 9692 link_key_t link_key; 9693 link_key_type_t link_key_type; 9694 #endif 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 return hci_connection->sm_connection.sm_le_db_index >= 0; 9702 #endif 9703 #ifdef ENABLE_CLASSIC 9704 case BD_ADDR_TYPE_SCO: 9705 case BD_ADDR_TYPE_ACL: 9706 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9707 #endif 9708 default: 9709 return false; 9710 } 9711 } 9712 9713 #ifdef ENABLE_BLE 9714 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9715 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9716 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9717 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9718 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9719 return sm_conn->sm_connection_authorization_state; 9720 } 9721 #endif 9722 9723 #ifdef ENABLE_CLASSIC 9724 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){ 9725 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9726 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9727 conn->sniff_min_interval = sniff_min_interval; 9728 conn->sniff_max_interval = sniff_max_interval; 9729 conn->sniff_attempt = sniff_attempt; 9730 conn->sniff_timeout = sniff_timeout; 9731 hci_run(); 9732 return 0; 9733 } 9734 9735 /** 9736 * @brief Exit Sniff mode 9737 * @param con_handle 9738 @ @return 0 if ok 9739 */ 9740 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9741 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9742 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9743 conn->sniff_min_interval = 0xffff; 9744 hci_run(); 9745 return 0; 9746 } 9747 9748 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){ 9749 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9750 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9751 conn->sniff_subrating_max_latency = max_latency; 9752 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9753 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9754 hci_run(); 9755 return ERROR_CODE_SUCCESS; 9756 } 9757 9758 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){ 9759 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9760 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9761 conn->qos_service_type = service_type; 9762 conn->qos_token_rate = token_rate; 9763 conn->qos_peak_bandwidth = peak_bandwidth; 9764 conn->qos_latency = latency; 9765 conn->qos_delay_variation = delay_variation; 9766 hci_run(); 9767 return ERROR_CODE_SUCCESS; 9768 } 9769 9770 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9771 hci_stack->new_page_scan_interval = page_scan_interval; 9772 hci_stack->new_page_scan_window = page_scan_window; 9773 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9774 hci_run(); 9775 } 9776 9777 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9778 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9779 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9780 hci_run(); 9781 } 9782 9783 void gap_set_page_timeout(uint16_t page_timeout){ 9784 hci_stack->page_timeout = page_timeout; 9785 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9786 hci_run(); 9787 } 9788 9789 #endif 9790 9791 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9792 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9793 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9794 if (le_device_db_index >= le_device_db_max_count()) return; 9795 uint8_t offset = le_device_db_index >> 3; 9796 uint8_t mask = 1 << (le_device_db_index & 7); 9797 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9798 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9799 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9800 // note: go back to remove entries, otherwise, a remove + add will skip the add 9801 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9802 } 9803 } 9804 9805 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9806 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9807 if (le_device_db_index >= le_device_db_max_count()) return; 9808 uint8_t offset = le_device_db_index >> 3; 9809 uint8_t mask = 1 << (le_device_db_index & 7); 9810 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9811 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9812 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9813 } 9814 } 9815 9816 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9817 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9818 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9819 } 9820 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9821 // restart le resolving list update 9822 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9823 } 9824 return ERROR_CODE_SUCCESS; 9825 } 9826 9827 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9828 hci_stack->le_privacy_mode = privacy_mode; 9829 } 9830 #endif 9831 9832 #ifdef ENABLE_BLE 9833 #ifdef ENABLE_LE_CENTRAL 9834 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9835 9836 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9837 9838 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9839 // incorrect configuration: 9840 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9841 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9842 btstack_assert(false); 9843 #endif 9844 9845 // check if already in list 9846 btstack_linked_list_iterator_t it; 9847 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9848 while (btstack_linked_list_iterator_has_next(&it)) { 9849 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9850 if (entry->sid != advertising_sid) { 9851 continue; 9852 } 9853 if (entry->address_type != address_type) { 9854 continue; 9855 } 9856 if (memcmp(entry->address, address, 6) != 0) { 9857 continue; 9858 } 9859 // disallow if already scheduled to add 9860 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9861 return ERROR_CODE_COMMAND_DISALLOWED; 9862 } 9863 // still on controller, but scheduled to remove -> re-add 9864 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9865 return ERROR_CODE_SUCCESS; 9866 } 9867 // alloc and add to list 9868 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9869 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9870 entry->sid = advertising_sid; 9871 entry->address_type = address_type; 9872 (void)memcpy(entry->address, address, 6); 9873 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9874 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9875 return ERROR_CODE_SUCCESS; 9876 } 9877 9878 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9879 btstack_linked_list_iterator_t it; 9880 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9881 while (btstack_linked_list_iterator_has_next(&it)){ 9882 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9883 if (entry->sid != advertising_sid) { 9884 continue; 9885 } 9886 if (entry->address_type != address_type) { 9887 continue; 9888 } 9889 if (memcmp(entry->address, address, 6) != 0) { 9890 continue; 9891 } 9892 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9893 // remove from controller if already present 9894 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9895 } else { 9896 // directly remove entry from whitelist 9897 btstack_linked_list_iterator_remove(&it); 9898 btstack_memory_periodic_advertiser_list_entry_free(entry); 9899 } 9900 return ERROR_CODE_SUCCESS; 9901 } 9902 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9903 } 9904 9905 static void hci_periodic_advertiser_list_clear(void){ 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->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9911 // remove from controller if already present 9912 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9913 continue; 9914 } 9915 // directly remove entry from whitelist 9916 btstack_linked_list_iterator_remove(&it); 9917 btstack_memory_periodic_advertiser_list_entry_free(entry); 9918 } 9919 } 9920 9921 uint8_t gap_periodic_advertiser_list_clear(void){ 9922 hci_periodic_advertiser_list_clear(); 9923 hci_run(); 9924 return ERROR_CODE_SUCCESS; 9925 } 9926 9927 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9928 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9929 if (status){ 9930 return status; 9931 } 9932 hci_run(); 9933 return ERROR_CODE_SUCCESS; 9934 } 9935 9936 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9937 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9938 if (status){ 9939 return status; 9940 } 9941 hci_run(); 9942 return ERROR_CODE_SUCCESS; 9943 } 9944 9945 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9946 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9947 // abort if already active 9948 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9949 return ERROR_CODE_COMMAND_DISALLOWED; 9950 } 9951 // store request 9952 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9953 hci_stack->le_periodic_sync_options = options; 9954 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9955 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9956 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9957 hci_stack->le_periodic_sync_skip = skip; 9958 hci_stack->le_periodic_sync_timeout = sync_timeout; 9959 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9960 9961 hci_run(); 9962 return ERROR_CODE_SUCCESS; 9963 } 9964 9965 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9966 // abort if not requested 9967 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9968 return ERROR_CODE_COMMAND_DISALLOWED; 9969 } 9970 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9971 hci_run(); 9972 return ERROR_CODE_SUCCESS; 9973 } 9974 9975 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9976 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9977 return ERROR_CODE_COMMAND_DISALLOWED; 9978 } 9979 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9980 hci_run(); 9981 return ERROR_CODE_SUCCESS; 9982 } 9983 9984 #endif 9985 #endif 9986 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9987 static hci_iso_stream_t * 9988 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9989 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9990 if (iso_stream != NULL){ 9991 iso_stream->iso_type = iso_type; 9992 iso_stream->state = state; 9993 iso_stream->group_id = group_id; 9994 iso_stream->stream_id = stream_id; 9995 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9996 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9997 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9998 } 9999 return iso_stream; 10000 } 10001 10002 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10003 btstack_linked_list_iterator_t it; 10004 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10005 while (btstack_linked_list_iterator_has_next(&it)){ 10006 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10007 if (iso_stream->cis_handle == con_handle ) { 10008 return iso_stream; 10009 } 10010 } 10011 return NULL; 10012 } 10013 10014 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10015 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10016 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10017 btstack_memory_hci_iso_stream_free(iso_stream); 10018 } 10019 10020 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10021 btstack_linked_list_iterator_t it; 10022 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10023 while (btstack_linked_list_iterator_has_next(&it)){ 10024 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10025 if ((iso_stream->group_id == group_id) && 10026 (iso_stream->iso_type == iso_type)){ 10027 btstack_linked_list_iterator_remove(&it); 10028 btstack_memory_hci_iso_stream_free(iso_stream); 10029 } 10030 } 10031 } 10032 10033 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10034 btstack_linked_list_iterator_t it; 10035 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10036 while (btstack_linked_list_iterator_has_next(&it)){ 10037 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10038 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10039 (iso_stream->group_id == group_id)){ 10040 btstack_linked_list_iterator_remove(&it); 10041 btstack_memory_hci_iso_stream_free(iso_stream); 10042 } 10043 } 10044 } 10045 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10046 btstack_linked_list_iterator_t it; 10047 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10048 while (btstack_linked_list_iterator_has_next(&it)){ 10049 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10050 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10051 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10052 } 10053 } 10054 } 10055 10056 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10057 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10058 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10059 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10060 return (sdu_len_offset + 2 + sdu_len) == size; 10061 } 10062 10063 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10064 if (iso_stream == NULL){ 10065 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10066 return; 10067 } 10068 10069 if (hci_stack->iso_packet_handler == NULL) { 10070 return; 10071 } 10072 10073 // parse header 10074 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10075 uint16_t data_total_length = little_endian_read_16(packet, 2); 10076 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10077 10078 // assert packet is complete 10079 if ((data_total_length + 4u) != size){ 10080 return; 10081 } 10082 10083 if ((pb_flag & 0x01) == 0){ 10084 if (pb_flag == 0x02){ 10085 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10086 if (hci_iso_sdu_complete(packet, size)) { 10087 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10088 } 10089 } else { 10090 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10091 if (size > sizeof(iso_stream->reassembly_buffer)){ 10092 return; 10093 } 10094 memcpy(iso_stream->reassembly_buffer, packet, size); 10095 // fix pb_flag 10096 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10097 iso_stream->reassembly_pos = size; 10098 } 10099 } else { 10100 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10101 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10102 if (ts_flag != 0){ 10103 return; 10104 } 10105 // append fragment 10106 if (iso_stream->reassembly_pos == 0){ 10107 return; 10108 } 10109 10110 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10111 // reset reassembly buffer 10112 iso_stream->reassembly_pos = 0; 10113 return; 10114 } 10115 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10116 iso_stream->reassembly_pos += data_total_length; 10117 10118 // deliver if last fragment and SDU complete 10119 if (pb_flag == 0x03){ 10120 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10121 // fix data_total_length 10122 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10123 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10124 } 10125 // reset reassembly buffer 10126 iso_stream->reassembly_pos = 0; 10127 } 10128 } 10129 } 10130 10131 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10132 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10133 uint16_t pos = 0; 10134 event[pos++] = HCI_EVENT_META_GAP; 10135 event[pos++] = 4 + (2 * big->num_bis); 10136 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10137 event[pos++] = status; 10138 event[pos++] = big->big_handle; 10139 event[pos++] = big->num_bis; 10140 uint8_t i; 10141 for (i=0;i<big->num_bis;i++){ 10142 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10143 pos += 2; 10144 } 10145 hci_emit_event(event, pos, 0); 10146 } 10147 10148 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10149 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10150 uint16_t pos = 0; 10151 event[pos++] = HCI_EVENT_META_GAP; 10152 event[pos++] = 4 + (2 * cig->num_cis); 10153 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10154 event[pos++] = status; 10155 event[pos++] = cig->cig_id; 10156 event[pos++] = cig->num_cis; 10157 uint8_t i; 10158 for (i=0;i<cig->num_cis;i++){ 10159 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10160 pos += 2; 10161 } 10162 hci_emit_event(event, pos, 0); 10163 } 10164 10165 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10166 uint16_t pos = 0; 10167 event[pos++] = HCI_EVENT_META_GAP; 10168 event[pos++] = 8; 10169 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10170 event[pos++] = status; 10171 event[pos++] = iso_stream->group_id; 10172 event[pos++] = iso_stream->stream_id; 10173 little_endian_store_16(event, pos, iso_stream->cis_handle); 10174 pos += 2; 10175 little_endian_store_16(event, pos, iso_stream->acl_handle); 10176 pos += 2; 10177 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10178 pos += 2; 10179 event[pos++] = iso_stream->number_of_subevents; 10180 event[pos++] = iso_stream->burst_number_c_to_p; 10181 event[pos++] = iso_stream->burst_number_p_to_c; 10182 event[pos++] = iso_stream->flush_timeout_c_to_p; 10183 event[pos++] = iso_stream->flush_timeout_p_to_c; 10184 return pos; 10185 } 10186 10187 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10188 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10189 // cache data before finalizing struct 10190 uint8_t event [17]; 10191 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10192 btstack_assert(pos <= sizeof(event)); 10193 if (status != ERROR_CODE_SUCCESS){ 10194 hci_iso_stream_finalize(iso_stream); 10195 } 10196 hci_emit_event(event, pos, 0); 10197 } 10198 10199 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10200 uint8_t event [4]; 10201 uint16_t pos = 0; 10202 event[pos++] = HCI_EVENT_META_GAP; 10203 event[pos++] = 2; 10204 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10205 event[pos++] = big->big_handle; 10206 hci_emit_event(event, pos, 0); 10207 } 10208 10209 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10210 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10211 uint16_t pos = 0; 10212 event[pos++] = HCI_EVENT_META_GAP; 10213 event[pos++] = 4; 10214 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10215 event[pos++] = status; 10216 event[pos++] = big_sync->big_handle; 10217 event[pos++] = big_sync->num_bis; 10218 uint8_t i; 10219 for (i=0;i<big_sync->num_bis;i++){ 10220 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10221 pos += 2; 10222 } 10223 hci_emit_event(event, pos, 0); 10224 } 10225 10226 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 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_SYNC_STOPPED; 10232 event[pos++] = big_handle; 10233 hci_emit_event(event, pos, 0); 10234 } 10235 10236 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10237 uint8_t event[6]; 10238 uint16_t pos = 0; 10239 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10240 event[pos++] = sizeof(event) - 2; 10241 event[pos++] = big->big_handle; 10242 event[pos++] = bis_index; 10243 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10244 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10245 } 10246 10247 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10248 uint8_t event[4]; 10249 uint16_t pos = 0; 10250 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10251 event[pos++] = sizeof(event) - 2; 10252 little_endian_store_16(event, pos, cis_con_handle); 10253 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10254 } 10255 10256 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10257 btstack_linked_list_iterator_t it; 10258 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10259 while (btstack_linked_list_iterator_has_next(&it)){ 10260 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10261 if ( big->big_handle == big_handle ) { 10262 return big; 10263 } 10264 } 10265 return NULL; 10266 } 10267 10268 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10269 btstack_linked_list_iterator_t it; 10270 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10271 while (btstack_linked_list_iterator_has_next(&it)){ 10272 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10273 if ( big_sync->big_handle == big_handle ) { 10274 return big_sync; 10275 } 10276 } 10277 return NULL; 10278 } 10279 10280 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10281 hci_stack->iso_packets_to_queue = num_packets; 10282 } 10283 10284 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10285 btstack_linked_list_iterator_t it; 10286 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10287 while (btstack_linked_list_iterator_has_next(&it)){ 10288 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10289 if ( cig->cig_id == cig_id ) { 10290 return cig; 10291 } 10292 } 10293 return NULL; 10294 } 10295 10296 static void hci_iso_notify_can_send_now(void){ 10297 10298 // BIG 10299 10300 btstack_linked_list_iterator_t it; 10301 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10302 while (btstack_linked_list_iterator_has_next(&it)){ 10303 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10304 // track number completed packet timestamps 10305 if (big->num_completed_timestamp_current_valid){ 10306 big->num_completed_timestamp_current_valid = false; 10307 if (big->num_completed_timestamp_previous_valid){ 10308 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10309 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10310 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10311 big->num_completed_timestamp_previous_ms); 10312 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10313 // to catch up, skip packet on all BIS 10314 uint8_t i; 10315 for (i=0;i<big->num_bis;i++){ 10316 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10317 if (iso_stream){ 10318 iso_stream->num_packets_to_skip++; 10319 } 10320 } 10321 } 10322 } 10323 big->num_completed_timestamp_previous_valid = true; 10324 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10325 } 10326 10327 if (big->can_send_now_requested){ 10328 // check if no outgoing iso packets pending and no can send now have to be emitted 10329 uint8_t i; 10330 bool can_send = true; 10331 uint8_t num_iso_queued_minimum = 0; 10332 for (i=0;i<big->num_bis;i++){ 10333 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10334 if (iso_stream == NULL) continue; 10335 // handle case where individual ISO packet was sent too late: 10336 // for each additionally queued packet, a new one needs to get skipped 10337 if (i==0){ 10338 num_iso_queued_minimum = iso_stream->num_packets_sent; 10339 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10340 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10341 iso_stream->num_packets_to_skip += num_packets_to_skip; 10342 iso_stream->num_packets_sent -= num_packets_to_skip; 10343 } 10344 // check if we can send now 10345 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10346 can_send = false; 10347 break; 10348 } 10349 } 10350 if (can_send){ 10351 // propagate can send now to individual streams 10352 big->can_send_now_requested = false; 10353 for (i=0;i<big->num_bis;i++){ 10354 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10355 iso_stream->emit_ready_to_send = true; 10356 } 10357 } 10358 } 10359 } 10360 10361 if (hci_stack->hci_packet_buffer_reserved) return; 10362 10363 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10364 while (btstack_linked_list_iterator_has_next(&it)){ 10365 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10366 // report bis ready 10367 uint8_t i; 10368 for (i=0;i<big->num_bis;i++){ 10369 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10370 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10371 iso_stream->emit_ready_to_send = false; 10372 hci_emit_bis_can_send_now(big, i); 10373 break; 10374 } 10375 } 10376 } 10377 10378 // CIS 10379 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10380 while (btstack_linked_list_iterator_has_next(&it)) { 10381 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10382 if ((iso_stream->can_send_now_requested) && 10383 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10384 iso_stream->can_send_now_requested = false; 10385 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10386 } 10387 } 10388 } 10389 10390 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10391 // make big handle unique and usuable for big and big sync 10392 if (hci_big_for_handle(big_handle) != NULL){ 10393 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10394 } 10395 if (hci_big_sync_for_handle(big_handle) != NULL){ 10396 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10397 } 10398 if (num_bis == 0){ 10399 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10400 } 10401 if (num_bis > MAX_NR_BIS){ 10402 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10403 } 10404 10405 // reserve ISO Streams 10406 uint8_t i; 10407 uint8_t status = ERROR_CODE_SUCCESS; 10408 for (i=0;i<num_bis;i++){ 10409 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10410 if (iso_stream == NULL) { 10411 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10412 break; 10413 } 10414 } 10415 10416 // free structs on error 10417 if (status != ERROR_CODE_SUCCESS){ 10418 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10419 } 10420 10421 return status; 10422 } 10423 10424 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10425 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10426 if (status != ERROR_CODE_SUCCESS){ 10427 return status; 10428 } 10429 10430 le_audio_big_t * big = storage; 10431 big->big_handle = big_params->big_handle; 10432 big->params = big_params; 10433 big->state = LE_AUDIO_BIG_STATE_CREATE; 10434 big->num_bis = big_params->num_bis; 10435 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10436 10437 hci_run(); 10438 10439 return ERROR_CODE_SUCCESS; 10440 } 10441 10442 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10443 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10444 if (status != ERROR_CODE_SUCCESS){ 10445 return status; 10446 } 10447 10448 le_audio_big_sync_t * big_sync = storage; 10449 big_sync->big_handle = big_sync_params->big_handle; 10450 big_sync->params = big_sync_params; 10451 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10452 big_sync->num_bis = big_sync_params->num_bis; 10453 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10454 10455 hci_run(); 10456 10457 return ERROR_CODE_SUCCESS; 10458 } 10459 10460 uint8_t gap_big_terminate(uint8_t big_handle){ 10461 le_audio_big_t * big = hci_big_for_handle(big_handle); 10462 if (big == NULL){ 10463 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10464 } 10465 switch (big->state){ 10466 case LE_AUDIO_BIG_STATE_CREATE: 10467 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10468 hci_emit_big_terminated(big); 10469 break; 10470 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10471 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10472 break; 10473 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10474 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10475 case LE_AUDIO_BIG_STATE_ACTIVE: 10476 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10477 hci_run(); 10478 break; 10479 default: 10480 return ERROR_CODE_COMMAND_DISALLOWED; 10481 } 10482 return ERROR_CODE_SUCCESS; 10483 } 10484 10485 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10486 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10487 if (big_sync == NULL){ 10488 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10489 } 10490 switch (big_sync->state){ 10491 case LE_AUDIO_BIG_STATE_CREATE: 10492 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10493 hci_emit_big_sync_stopped(big_handle); 10494 break; 10495 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10496 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10497 break; 10498 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10499 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10500 case LE_AUDIO_BIG_STATE_ACTIVE: 10501 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10502 hci_run(); 10503 break; 10504 default: 10505 return ERROR_CODE_COMMAND_DISALLOWED; 10506 } 10507 return ERROR_CODE_SUCCESS; 10508 } 10509 10510 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10511 le_audio_big_t * big = hci_big_for_handle(big_handle); 10512 if (big == NULL){ 10513 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10514 } 10515 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10516 return ERROR_CODE_COMMAND_DISALLOWED; 10517 } 10518 big->can_send_now_requested = true; 10519 hci_iso_notify_can_send_now(); 10520 return ERROR_CODE_SUCCESS; 10521 } 10522 10523 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10524 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10525 if (iso_stream == NULL){ 10526 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10527 } 10528 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10529 return ERROR_CODE_COMMAND_DISALLOWED; 10530 } 10531 iso_stream->can_send_now_requested = true; 10532 hci_iso_notify_can_send_now(); 10533 return ERROR_CODE_SUCCESS; 10534 } 10535 10536 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10537 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10538 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10539 } 10540 if (cig_params->num_cis == 0){ 10541 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10542 } 10543 if (cig_params->num_cis > MAX_NR_CIS){ 10544 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10545 } 10546 10547 // reserve ISO Streams 10548 uint8_t i; 10549 uint8_t status = ERROR_CODE_SUCCESS; 10550 for (i=0;i<cig_params->num_cis;i++){ 10551 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10552 if (iso_stream == NULL) { 10553 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10554 break; 10555 } 10556 } 10557 10558 // free structs on error 10559 if (status != ERROR_CODE_SUCCESS){ 10560 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10561 return status; 10562 } 10563 10564 le_audio_cig_t * cig = storage; 10565 cig->cig_id = cig_params->cig_id; 10566 cig->num_cis = cig_params->num_cis; 10567 cig->params = cig_params; 10568 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10569 for (i=0;i<cig->num_cis;i++){ 10570 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10571 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10572 cig->cis_setup_active[i] = false; 10573 cig->cis_established[i] = false; 10574 } 10575 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10576 10577 hci_run(); 10578 10579 return ERROR_CODE_SUCCESS; 10580 } 10581 10582 uint8_t gap_cig_remove(uint8_t cig_id){ 10583 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10584 if (cig == NULL){ 10585 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10586 } 10587 10588 // close active CIS 10589 uint8_t i; 10590 for (i=0;i<cig->num_cis;i++){ 10591 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10592 if (stream != NULL){ 10593 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10594 } 10595 } 10596 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10597 10598 hci_run(); 10599 10600 return ERROR_CODE_SUCCESS; 10601 } 10602 10603 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10604 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10605 if (cig == NULL){ 10606 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10607 } 10608 10609 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10610 return ERROR_CODE_COMMAND_DISALLOWED; 10611 } 10612 10613 // store ACL Connection Handles 10614 uint8_t i; 10615 for (i=0;i<cig->num_cis;i++){ 10616 // check that all con handles exist and store 10617 hci_con_handle_t cis_handle = cis_con_handles[i]; 10618 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10619 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10620 } 10621 uint8_t j; 10622 bool found = false; 10623 for (j=0;j<cig->num_cis;j++){ 10624 if (cig->cis_con_handles[j] == cis_handle){ 10625 cig->acl_con_handles[j] = acl_con_handles[j]; 10626 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10627 btstack_assert(iso_stream != NULL); 10628 iso_stream->acl_handle = acl_con_handles[j]; 10629 found = true; 10630 break; 10631 } 10632 } 10633 if (!found){ 10634 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10635 } 10636 } 10637 10638 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10639 hci_run(); 10640 10641 return ERROR_CODE_SUCCESS; 10642 } 10643 10644 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10645 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10646 if (iso_stream == NULL){ 10647 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10648 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10649 } 10650 10651 // set next state and continue 10652 iso_stream->state = state; 10653 hci_run(); 10654 return ERROR_CODE_SUCCESS; 10655 } 10656 10657 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10658 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10659 } 10660 10661 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10662 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10663 } 10664 10665 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10666 10667 // GAP Privacy - notify clients before random address update 10668 10669 static bool gap_privacy_client_all_ready(void){ 10670 // check if all ready 10671 btstack_linked_list_iterator_t it; 10672 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10673 while (btstack_linked_list_iterator_has_next(&it)) { 10674 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10675 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10676 return false; 10677 } 10678 } 10679 return true; 10680 } 10681 10682 static void gap_privacy_clients_handle_ready(void){ 10683 // clear 'ready' 10684 btstack_linked_list_iterator_t it; 10685 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10686 while (btstack_linked_list_iterator_has_next(&it)) { 10687 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10688 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10689 } 10690 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10691 hci_run(); 10692 } 10693 10694 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10695 btstack_linked_list_iterator_t it; 10696 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10697 while (btstack_linked_list_iterator_has_next(&it)) { 10698 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10699 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10700 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10701 (*client->callback)(client, new_random_address); 10702 } 10703 } 10704 if (gap_privacy_client_all_ready()){ 10705 gap_privacy_clients_handle_ready(); 10706 } 10707 } 10708 10709 void gap_privacy_client_register(gap_privacy_client_t * client){ 10710 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10711 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10712 } 10713 10714 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10715 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10716 if (gap_privacy_client_all_ready()){ 10717 gap_privacy_clients_handle_ready(); 10718 } 10719 } 10720 10721 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10722 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10723 } 10724 10725 #endif /* ENABLE_BLE */ 10726 10727 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10728 void hci_setup_test_connections_fuzz(void){ 10729 hci_connection_t * conn; 10730 10731 // default address: 66:55:44:33:00:01 10732 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10733 10734 // setup Controller info 10735 hci_stack->num_cmd_packets = 255; 10736 hci_stack->acl_packets_total_num = 255; 10737 10738 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10739 addr[5] = 0x01; 10740 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10741 conn->con_handle = addr[5]; 10742 conn->state = RECEIVED_CONNECTION_REQUEST; 10743 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10744 10745 // setup incoming Classic SCO connection with con handle 0x0002 10746 addr[5] = 0x02; 10747 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10748 conn->con_handle = addr[5]; 10749 conn->state = RECEIVED_CONNECTION_REQUEST; 10750 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10751 10752 // setup ready Classic ACL connection with con handle 0x0003 10753 addr[5] = 0x03; 10754 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10755 conn->con_handle = addr[5]; 10756 conn->state = OPEN; 10757 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10758 10759 // setup ready Classic SCO connection with con handle 0x0004 10760 addr[5] = 0x04; 10761 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10762 conn->con_handle = addr[5]; 10763 conn->state = OPEN; 10764 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10765 10766 // setup ready LE ACL connection with con handle 0x005 and public address 10767 addr[5] = 0x05; 10768 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10769 conn->con_handle = addr[5]; 10770 conn->state = OPEN; 10771 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10772 conn->sm_connection.sm_connection_encrypted = 1; 10773 } 10774 10775 void hci_free_connections_fuzz(void){ 10776 btstack_linked_list_iterator_t it; 10777 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10778 while (btstack_linked_list_iterator_has_next(&it)){ 10779 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10780 btstack_linked_list_iterator_remove(&it); 10781 btstack_memory_hci_connection_free(con); 10782 } 10783 } 10784 void hci_simulate_working_fuzz(void){ 10785 hci_stack->le_scanning_param_update = false; 10786 hci_init_done(); 10787 hci_stack->num_cmd_packets = 255; 10788 } 10789 #endif 10790