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 static uint8_t hci_send_prepared_cmd_packet(); 220 221 #ifdef ENABLE_CLASSIC 222 static int hci_have_usb_transport(void); 223 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 224 #endif 225 226 #ifdef ENABLE_BLE 227 static bool hci_run_general_gap_le(void); 228 static void gap_privacy_clients_handle_ready(void); 229 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 230 #ifdef ENABLE_LE_CENTRAL 231 // called from test/ble_client/advertising_data_parser.c 232 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 233 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 234 static hci_connection_t * gap_get_outgoing_le_connection(void); 235 static void hci_le_scan_stop(void); 236 #endif 237 #ifdef ENABLE_LE_PERIPHERAL 238 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 239 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 240 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 241 #endif /* ENABLE_LE_PERIPHERAL */ 242 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 243 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); 244 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 245 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 246 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 247 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 248 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 249 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 250 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 251 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 252 static void hci_iso_notify_can_send_now(void); 253 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 254 static void hci_emit_big_terminated(const le_audio_big_t * big); 255 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 256 static void hci_emit_big_sync_stopped(uint8_t big_handle); 257 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 258 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 259 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 260 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 261 #endif /* ENABLE_BLE */ 262 263 // the STACK is here 264 #ifndef HAVE_MALLOC 265 static hci_stack_t hci_stack_static; 266 #endif 267 static hci_stack_t * hci_stack = NULL; 268 269 #ifdef ENABLE_CLASSIC 270 // default name 271 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 272 273 // test helper 274 static uint8_t disable_l2cap_timeouts = 0; 275 #endif 276 277 // reset connection state on create and on reconnect 278 // don't overwrite addr, con handle, role 279 static void hci_connection_init(hci_connection_t * conn){ 280 conn->authentication_flags = AUTH_FLAG_NONE; 281 conn->bonding_flags = 0; 282 conn->requested_security_level = LEVEL_0; 283 conn->link_key_type = INVALID_LINK_KEY; 284 #ifdef ENABLE_CLASSIC 285 conn->request_role = HCI_ROLE_INVALID; 286 conn->sniff_subrating_max_latency = 0xffff; 287 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 288 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 289 btstack_run_loop_set_timer_context(&conn->timeout, conn); 290 hci_connection_timestamp(conn); 291 #endif 292 conn->acl_recombination_length = 0; 293 conn->acl_recombination_pos = 0; 294 conn->num_packets_sent = 0; 295 296 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 297 #ifdef ENABLE_BLE 298 conn->le_phy_update_all_phys = 0xff; 299 #endif 300 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 301 conn->le_max_tx_octets = 27; 302 #endif 303 #ifdef ENABLE_CLASSIC_PAIRING_OOB 304 conn->classic_oob_c_192 = NULL; 305 conn->classic_oob_r_192 = NULL; 306 conn->classic_oob_c_256 = NULL; 307 conn->classic_oob_r_256 = NULL; 308 #endif 309 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 310 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 311 conn->le_past_advertising_handle = 0xff; 312 #endif 313 } 314 315 /** 316 * create connection for given address 317 * 318 * @return connection OR NULL, if no memory left 319 */ 320 static hci_connection_t * 321 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 322 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 323 324 hci_connection_t * conn = btstack_memory_hci_connection_get(); 325 if (!conn) return NULL; 326 hci_connection_init(conn); 327 328 bd_addr_copy(conn->address, addr); 329 conn->address_type = addr_type; 330 conn->con_handle = HCI_CON_HANDLE_INVALID; 331 conn->role = role; 332 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 333 334 return conn; 335 } 336 337 338 /** 339 * get le connection parameter range 340 * 341 * @return le connection parameter range struct 342 */ 343 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 344 *range = hci_stack->le_connection_parameter_range; 345 } 346 347 /** 348 * set le connection parameter range 349 * 350 */ 351 352 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 353 hci_stack->le_connection_parameter_range = *range; 354 } 355 356 /** 357 * @brief Test if connection parameters are inside in existing rage 358 * @param conn_interval_min (unit: 1.25ms) 359 * @param conn_interval_max (unit: 1.25ms) 360 * @param conn_latency 361 * @param supervision_timeout (unit: 10ms) 362 * @return 1 if included 363 */ 364 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){ 365 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 366 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 367 368 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 369 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 370 371 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 372 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 373 374 return 1; 375 } 376 377 /** 378 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 379 * @note: default: 1 380 * @param max_peripheral_connections 381 */ 382 #ifdef ENABLE_LE_PERIPHERAL 383 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 384 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 385 } 386 #endif 387 388 /** 389 * get hci connections iterator 390 * 391 * @return hci connections iterator 392 */ 393 394 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 395 btstack_linked_list_iterator_init(it, &hci_stack->connections); 396 } 397 398 /** 399 * get connection for a given handle 400 * 401 * @return connection OR NULL, if not found 402 */ 403 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 404 btstack_linked_list_iterator_t it; 405 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 406 while (btstack_linked_list_iterator_has_next(&it)){ 407 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 408 if ( item->con_handle == con_handle ) { 409 return item; 410 } 411 } 412 return NULL; 413 } 414 415 /** 416 * get connection for given address 417 * 418 * @return connection OR NULL, if not found 419 */ 420 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 421 btstack_linked_list_iterator_t it; 422 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 423 while (btstack_linked_list_iterator_has_next(&it)){ 424 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 425 if (connection->address_type != addr_type) continue; 426 if (memcmp(addr, connection->address, 6) != 0) continue; 427 return connection; 428 } 429 return NULL; 430 } 431 432 #ifdef ENABLE_CLASSIC 433 434 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 435 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 436 } 437 438 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 439 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 440 } 441 442 #ifdef ENABLE_SCO_OVER_HCI 443 static int hci_number_sco_connections(void){ 444 int connections = 0; 445 btstack_linked_list_iterator_t it; 446 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 447 while (btstack_linked_list_iterator_has_next(&it)){ 448 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 449 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 450 connections++; 451 } 452 return connections; 453 } 454 #endif 455 456 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 457 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 458 #ifdef HAVE_EMBEDDED_TICK 459 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 460 // connections might be timed out 461 hci_emit_l2cap_check_timeout(connection); 462 } 463 #else 464 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 465 // connections might be timed out 466 hci_emit_l2cap_check_timeout(connection); 467 } 468 #endif 469 } 470 471 static void hci_connection_timestamp(hci_connection_t *connection){ 472 #ifdef HAVE_EMBEDDED_TICK 473 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 474 #else 475 connection->timestamp = btstack_run_loop_get_time_ms(); 476 #endif 477 } 478 479 /** 480 * add authentication flags and reset timer 481 * @note: assumes classic connection 482 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 483 */ 484 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 485 bd_addr_t addr; 486 reverse_bd_addr(bd_addr, addr); 487 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 488 if (conn) { 489 connectionSetAuthenticationFlags(conn, flags); 490 hci_connection_timestamp(conn); 491 } 492 } 493 494 static bool hci_pairing_active(hci_connection_t * hci_connection){ 495 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 496 } 497 498 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 499 if (hci_pairing_active(hci_connection)) return; 500 if (ssp){ 501 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 502 } else { 503 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 504 } 505 // if we are initiator, we have sent an HCI Authenticate Request 506 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 507 508 // if we are responder, use minimal service security level as required level 509 if (!initiator){ 510 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); 511 } 512 513 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 514 515 uint8_t event[12]; 516 event[0] = GAP_EVENT_PAIRING_STARTED; 517 event[1] = 10; 518 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 519 reverse_bd_addr(hci_connection->address, &event[4]); 520 event[10] = (uint8_t) ssp; 521 event[11] = (uint8_t) initiator; 522 hci_emit_event(event, sizeof(event), 1); 523 } 524 525 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 526 hci_connection->requested_security_level = LEVEL_0; 527 if (!hci_pairing_active(hci_connection)) return; 528 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 529 #ifdef ENABLE_CLASSIC_PAIRING_OOB 530 hci_connection->classic_oob_c_192 = NULL; 531 hci_connection->classic_oob_r_192 = NULL; 532 hci_connection->classic_oob_c_256 = NULL; 533 hci_connection->classic_oob_r_256 = NULL; 534 #endif 535 log_info("pairing complete, status %02x", status); 536 537 uint8_t event[11]; 538 event[0] = GAP_EVENT_PAIRING_COMPLETE; 539 event[1] = 9; 540 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 541 reverse_bd_addr(hci_connection->address, &event[4]); 542 event[10] = status; 543 hci_emit_event(event, sizeof(event), 1); 544 545 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 546 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 547 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 548 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 549 hci_connection->bonding_status = status; 550 } 551 } 552 553 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 554 hci_connection_t * conn = hci_connection_for_handle(handle); 555 if (!conn) return false; 556 return hci_pairing_active(conn); 557 } 558 559 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 560 if (!hci_stack->link_key_db) return; 561 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 562 hci_stack->link_key_db->delete_link_key(addr); 563 } 564 565 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 566 if (!hci_stack->link_key_db) return; 567 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 568 hci_stack->link_key_db->put_link_key(addr, link_key, type); 569 } 570 571 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 572 if (!hci_stack->link_key_db) return false; 573 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 574 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 575 return result; 576 } 577 578 void gap_delete_all_link_keys(void){ 579 bd_addr_t addr; 580 link_key_t link_key; 581 link_key_type_t type; 582 btstack_link_key_iterator_t it; 583 int ok = gap_link_key_iterator_init(&it); 584 if (!ok) { 585 log_error("could not initialize iterator"); 586 return; 587 } 588 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 589 gap_drop_link_key_for_bd_addr(addr); 590 } 591 gap_link_key_iterator_done(&it); 592 } 593 594 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 595 if (!hci_stack->link_key_db) return 0; 596 if (!hci_stack->link_key_db->iterator_init) return 0; 597 return hci_stack->link_key_db->iterator_init(it); 598 } 599 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){ 600 if (!hci_stack->link_key_db) return 0; 601 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 602 } 603 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 604 if (!hci_stack->link_key_db) return; 605 hci_stack->link_key_db->iterator_done(it); 606 } 607 #endif 608 609 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 610 switch (address_type){ 611 case BD_ADDR_TYPE_LE_PUBLIC: 612 case BD_ADDR_TYPE_LE_RANDOM: 613 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 614 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 615 return true; 616 default: 617 return false; 618 } 619 } 620 621 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 622 switch (address_type){ 623 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 624 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 625 return true; 626 default: 627 return false; 628 } 629 } 630 631 static bool hci_is_le_connection(hci_connection_t * connection){ 632 return hci_is_le_connection_type(connection->address_type); 633 } 634 635 /** 636 * count connections 637 */ 638 static int nr_hci_connections(void){ 639 int count = 0; 640 btstack_linked_item_t *it; 641 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 642 count++; 643 } 644 return count; 645 } 646 647 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 648 649 unsigned int num_packets_sent_classic = 0; 650 unsigned int num_packets_sent_le = 0; 651 652 btstack_linked_item_t *it; 653 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 654 hci_connection_t * connection = (hci_connection_t *) it; 655 if (hci_is_le_connection(connection)){ 656 num_packets_sent_le += connection->num_packets_sent; 657 } 658 if (connection->address_type == BD_ADDR_TYPE_ACL){ 659 num_packets_sent_classic += connection->num_packets_sent; 660 } 661 } 662 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 663 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 664 int free_slots_le = 0; 665 666 if (free_slots_classic < 0){ 667 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); 668 return 0; 669 } 670 671 if (hci_stack->le_acl_packets_total_num){ 672 // if we have LE slots, they are used 673 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 674 if (free_slots_le < 0){ 675 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); 676 return 0; 677 } 678 } else { 679 // otherwise, classic slots are used for LE, too 680 free_slots_classic -= num_packets_sent_le; 681 if (free_slots_classic < 0){ 682 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); 683 return 0; 684 } 685 } 686 687 switch (address_type){ 688 case BD_ADDR_TYPE_UNKNOWN: 689 log_error("hci_number_free_acl_slots: unknown address type"); 690 return 0; 691 692 case BD_ADDR_TYPE_ACL: 693 return (uint16_t) free_slots_classic; 694 695 default: 696 if (hci_stack->le_acl_packets_total_num > 0){ 697 return (uint16_t) free_slots_le; 698 } 699 return (uint16_t) free_slots_classic; 700 } 701 } 702 703 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 704 // get connection type 705 hci_connection_t * connection = hci_connection_for_handle(con_handle); 706 if (!connection){ 707 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 708 return 0; 709 } 710 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 711 } 712 713 #ifdef ENABLE_CLASSIC 714 static int hci_number_free_sco_slots(void){ 715 unsigned int num_sco_packets_sent = 0; 716 btstack_linked_item_t *it; 717 if (hci_stack->synchronous_flow_control_enabled){ 718 // explicit flow control 719 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 720 hci_connection_t * connection = (hci_connection_t *) it; 721 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 722 num_sco_packets_sent += connection->num_packets_sent; 723 } 724 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 725 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 726 return 0; 727 } 728 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 729 } else { 730 // implicit flow control 731 int num_ready = 0; 732 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 733 hci_connection_t * connection = (hci_connection_t *) it; 734 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 735 if (connection->sco_tx_ready == 0) continue; 736 num_ready++; 737 } 738 return num_ready; 739 } 740 } 741 #endif 742 743 // only used to send HCI Host Number Completed Packets 744 static int hci_can_send_comand_packet_transport(void){ 745 if (hci_stack->hci_packet_buffer_reserved) return 0; 746 747 // check for async hci transport implementations 748 if (hci_stack->hci_transport->can_send_packet_now){ 749 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 750 return 0; 751 } 752 } 753 return 1; 754 } 755 756 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 757 bool hci_can_send_command_packet_now(void){ 758 if (hci_can_send_comand_packet_transport() == 0) return false; 759 return hci_stack->num_cmd_packets > 0u; 760 } 761 762 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 763 // check for async hci transport implementations 764 if (!hci_stack->hci_transport->can_send_packet_now) return true; 765 return hci_stack->hci_transport->can_send_packet_now(packet_type); 766 } 767 768 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 769 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 770 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 771 } 772 773 bool hci_can_send_acl_le_packet_now(void){ 774 if (hci_stack->hci_packet_buffer_reserved) return false; 775 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 776 } 777 778 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 779 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 780 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 781 } 782 783 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 784 if (hci_stack->hci_packet_buffer_reserved) return false; 785 return hci_can_send_prepared_acl_packet_now(con_handle); 786 } 787 788 #ifdef ENABLE_CLASSIC 789 bool hci_can_send_acl_classic_packet_now(void){ 790 if (hci_stack->hci_packet_buffer_reserved) return false; 791 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 792 } 793 794 bool hci_can_send_prepared_sco_packet_now(void){ 795 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 796 if (hci_have_usb_transport()){ 797 return hci_stack->sco_can_send_now; 798 } else { 799 return hci_number_free_sco_slots() > 0; 800 } 801 } 802 803 bool hci_can_send_sco_packet_now(void){ 804 if (hci_stack->hci_packet_buffer_reserved) return false; 805 return hci_can_send_prepared_sco_packet_now(); 806 } 807 808 void hci_request_sco_can_send_now_event(void){ 809 hci_stack->sco_waiting_for_can_send_now = 1; 810 hci_notify_if_sco_can_send_now(); 811 } 812 #endif 813 814 // used for internal checks in l2cap.c 815 bool hci_is_packet_buffer_reserved(void){ 816 return hci_stack->hci_packet_buffer_reserved; 817 } 818 819 void hci_reserve_packet_buffer(void){ 820 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 821 hci_stack->hci_packet_buffer_reserved = true; 822 } 823 824 void hci_release_packet_buffer(void){ 825 btstack_assert(hci_stack->hci_packet_buffer_reserved); 826 hci_stack->hci_packet_buffer_reserved = false; 827 hci_emit_transport_packet_sent(); 828 } 829 830 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 831 static int hci_transport_synchronous(void){ 832 return hci_stack->hci_transport->can_send_packet_now == NULL; 833 } 834 835 // used for debugging 836 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 837 static void hci_controller_dump_packets(void){ 838 // format: "{handle:04x}:{count:02d} " 839 char summaries[3][7 * 8 + 1]; 840 uint16_t totals[3]; 841 uint8_t index; 842 for (index = 0 ; index < 3 ; index++){ 843 summaries[index][0] = 0; 844 totals[index] = 0; 845 } 846 btstack_linked_item_t *it; 847 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 848 hci_connection_t * connection = (hci_connection_t *) it; 849 switch (connection->address_type){ 850 case BD_ADDR_TYPE_ACL: 851 index = 0; 852 break; 853 case BD_ADDR_TYPE_SCO: 854 index = 2; 855 break; 856 default: 857 index = 1; 858 break; 859 } 860 totals[index] += connection->num_packets_sent; 861 char item_text[10]; 862 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 863 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 864 } 865 for (index = 0 ; index < 3 ; index++){ 866 if (summaries[index][0] == 0){ 867 summaries[index][0] = '-'; 868 summaries[index][1] = 0; 869 } 870 } 871 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]); 872 } 873 #endif 874 875 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 876 877 // 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); 878 879 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 880 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 881 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 882 max_acl_data_packet_length = hci_stack->le_data_packets_length; 883 } 884 885 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 886 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 887 max_acl_data_packet_length = connection->le_max_tx_octets; 888 } 889 #endif 890 891 log_debug("hci_send_acl_packet_fragments entered"); 892 893 uint8_t status = ERROR_CODE_SUCCESS; 894 // multiple packets could be send on a synchronous HCI transport 895 while (true){ 896 897 log_debug("hci_send_acl_packet_fragments loop entered"); 898 899 // get current data 900 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 901 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 902 bool more_fragments = false; 903 904 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 905 if (current_acl_data_packet_length > max_acl_data_packet_length){ 906 more_fragments = true; 907 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 908 } 909 910 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 911 if (acl_header_pos > 0u){ 912 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 913 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 914 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 915 } 916 917 // update header len 918 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 919 920 // count packet 921 connection->num_packets_sent++; 922 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 923 924 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 925 if (more_fragments){ 926 // update start of next fragment to send 927 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 928 } else { 929 // done 930 hci_stack->acl_fragmentation_pos = 0; 931 hci_stack->acl_fragmentation_total_size = 0; 932 } 933 934 // send packet 935 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 936 const int size = current_acl_data_packet_length + 4; 937 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 938 hci_stack->acl_fragmentation_tx_active = 1; 939 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 940 if (err != 0){ 941 // no error from HCI Transport expected 942 status = ERROR_CODE_HARDWARE_FAILURE; 943 } 944 945 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 946 hci_controller_dump_packets(); 947 #endif 948 949 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 950 951 // done yet? 952 if (!more_fragments) break; 953 954 // can send more? 955 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 956 } 957 958 log_debug("hci_send_acl_packet_fragments loop over"); 959 960 // release buffer now for synchronous transport 961 if (hci_transport_synchronous()){ 962 hci_stack->acl_fragmentation_tx_active = 0; 963 hci_release_packet_buffer(); 964 } 965 966 return status; 967 } 968 969 // pre: caller has reserved the packet buffer 970 uint8_t hci_send_acl_packet_buffer(int size){ 971 btstack_assert(hci_stack->hci_packet_buffer_reserved); 972 973 uint8_t * packet = hci_stack->hci_packet_buffer; 974 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 975 976 hci_connection_t *connection = hci_connection_for_handle( con_handle); 977 if (!connection) { 978 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 979 hci_release_packet_buffer(); 980 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 981 } 982 983 // check for free places on Bluetooth module 984 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 985 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 986 hci_release_packet_buffer(); 987 return BTSTACK_ACL_BUFFERS_FULL; 988 } 989 990 #ifdef ENABLE_CLASSIC 991 hci_connection_timestamp(connection); 992 #endif 993 994 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 995 996 // setup data 997 hci_stack->acl_fragmentation_total_size = size; 998 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 999 1000 return hci_send_acl_packet_fragments(connection); 1001 } 1002 1003 #ifdef ENABLE_CLASSIC 1004 // pre: caller has reserved the packet buffer 1005 uint8_t hci_send_sco_packet_buffer(int size){ 1006 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1007 1008 uint8_t * packet = hci_stack->hci_packet_buffer; 1009 1010 // skip checks in loopback mode 1011 if (!hci_stack->loopback_mode){ 1012 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1013 1014 // check for free places on Bluetooth module 1015 if (!hci_can_send_prepared_sco_packet_now()) { 1016 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1017 hci_release_packet_buffer(); 1018 return BTSTACK_ACL_BUFFERS_FULL; 1019 } 1020 1021 // track send packet in connection struct 1022 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1023 if (!connection) { 1024 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1025 hci_release_packet_buffer(); 1026 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1027 } 1028 1029 if (hci_have_usb_transport()){ 1030 // token used 1031 hci_stack->sco_can_send_now = false; 1032 } else { 1033 if (hci_stack->synchronous_flow_control_enabled){ 1034 connection->num_packets_sent++; 1035 } else { 1036 connection->sco_tx_ready--; 1037 } 1038 } 1039 } 1040 1041 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1042 1043 #ifdef HAVE_SCO_TRANSPORT 1044 hci_stack->sco_transport->send_packet(packet, size); 1045 hci_release_packet_buffer(); 1046 hci_emit_transport_packet_sent(); 1047 1048 return 0; 1049 #else 1050 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1051 if (hci_transport_synchronous()){ 1052 hci_release_packet_buffer(); 1053 } 1054 1055 if (err != 0){ 1056 return ERROR_CODE_HARDWARE_FAILURE; 1057 } 1058 return ERROR_CODE_SUCCESS; 1059 #endif 1060 } 1061 #endif 1062 1063 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1064 static uint8_t hci_send_iso_packet_fragments(void){ 1065 1066 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1067 uint8_t status = ERROR_CODE_SUCCESS; 1068 // multiple packets could be send on a synchronous HCI transport 1069 while (true){ 1070 1071 // get current data 1072 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1073 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1074 bool more_fragments = false; 1075 1076 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1077 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1078 more_fragments = true; 1079 current_iso_data_packet_length = max_iso_data_packet_length; 1080 } 1081 1082 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1083 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1084 uint8_t pb_flags; 1085 if (iso_header_pos == 0u){ 1086 // first fragment, keep TS field 1087 pb_flags = more_fragments ? 0x00 : 0x02; 1088 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1089 } else { 1090 // later fragment, drop TS field 1091 pb_flags = more_fragments ? 0x01 : 0x03; 1092 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1093 } 1094 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1095 1096 // update header len 1097 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1098 1099 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1100 if (more_fragments){ 1101 // update start of next fragment to send 1102 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1103 } else { 1104 // done 1105 hci_stack->iso_fragmentation_pos = 0; 1106 hci_stack->iso_fragmentation_total_size = 0; 1107 } 1108 1109 // send packet 1110 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1111 const int size = current_iso_data_packet_length + 4; 1112 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1113 hci_stack->iso_fragmentation_tx_active = true; 1114 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1115 if (err != 0){ 1116 // no error from HCI Transport expected 1117 status = ERROR_CODE_HARDWARE_FAILURE; 1118 } 1119 1120 // done yet? 1121 if (!more_fragments) break; 1122 1123 // can send more? 1124 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1125 } 1126 1127 // release buffer now for synchronous transport 1128 if (hci_transport_synchronous()){ 1129 hci_stack->iso_fragmentation_tx_active = false; 1130 hci_release_packet_buffer(); 1131 hci_emit_transport_packet_sent(); 1132 } 1133 1134 return status; 1135 } 1136 1137 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1138 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1139 1140 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1141 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1142 if (iso_stream == NULL){ 1143 hci_release_packet_buffer(); 1144 hci_iso_notify_can_send_now(); 1145 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1146 } 1147 1148 // TODO: check for space on controller 1149 1150 // skip iso packets if needed 1151 if (iso_stream->num_packets_to_skip > 0){ 1152 iso_stream->num_packets_to_skip--; 1153 // pretend it was processed and trigger next one 1154 hci_release_packet_buffer(); 1155 hci_iso_notify_can_send_now(); 1156 return ERROR_CODE_SUCCESS; 1157 } 1158 1159 // track outgoing packet sent 1160 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1161 iso_stream->num_packets_sent++; 1162 1163 // setup data 1164 hci_stack->iso_fragmentation_total_size = size; 1165 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1166 1167 return hci_send_iso_packet_fragments(); 1168 } 1169 #endif 1170 1171 static void acl_handler(uint8_t *packet, uint16_t size){ 1172 1173 // get info 1174 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1175 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1176 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1177 uint16_t acl_length = READ_ACL_LENGTH(packet); 1178 1179 // ignore non-registered handle 1180 if (!conn){ 1181 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1182 return; 1183 } 1184 1185 // assert packet is complete 1186 if ((acl_length + 4u) != size){ 1187 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1188 return; 1189 } 1190 1191 #ifdef ENABLE_CLASSIC 1192 // update idle timestamp 1193 hci_connection_timestamp(conn); 1194 #endif 1195 1196 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1197 hci_stack->host_completed_packets = 1; 1198 conn->num_packets_completed++; 1199 #endif 1200 1201 // handle different packet types 1202 switch (acl_flags & 0x03u) { 1203 1204 case 0x01: // continuation fragment 1205 1206 // sanity checks 1207 if (conn->acl_recombination_pos == 0u) { 1208 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1209 return; 1210 } 1211 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1212 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1213 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1214 conn->acl_recombination_pos = 0; 1215 return; 1216 } 1217 1218 // append fragment payload (header already stored) 1219 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1220 &packet[4], acl_length); 1221 conn->acl_recombination_pos += acl_length; 1222 1223 // forward complete L2CAP packet if complete. 1224 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1225 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1226 // reset recombination buffer 1227 conn->acl_recombination_length = 0; 1228 conn->acl_recombination_pos = 0; 1229 } 1230 break; 1231 1232 case 0x02: { // first fragment 1233 1234 // sanity check 1235 if (conn->acl_recombination_pos) { 1236 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1237 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1238 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1239 } 1240 conn->acl_recombination_pos = 0; 1241 } 1242 1243 // peek into L2CAP packet! 1244 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1245 1246 // compare fragment size to L2CAP packet size 1247 if (acl_length >= (l2cap_length + 4u)){ 1248 // forward fragment as L2CAP packet 1249 hci_emit_acl_packet(packet, acl_length + 4u); 1250 } else { 1251 1252 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1253 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1254 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1255 return; 1256 } 1257 1258 // store first fragment and tweak acl length for complete package 1259 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1260 packet, acl_length + 4u); 1261 conn->acl_recombination_pos = acl_length + 4u; 1262 conn->acl_recombination_length = l2cap_length; 1263 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1264 } 1265 break; 1266 1267 } 1268 default: 1269 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1270 return; 1271 } 1272 1273 // execute main loop 1274 hci_run(); 1275 } 1276 1277 static void hci_connection_stop_timer(hci_connection_t * conn){ 1278 btstack_run_loop_remove_timer(&conn->timeout); 1279 #ifdef ENABLE_CLASSIC 1280 btstack_run_loop_remove_timer(&conn->timeout_sco); 1281 #endif 1282 } 1283 1284 static void hci_shutdown_connection(hci_connection_t *conn){ 1285 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1286 1287 #ifdef ENABLE_CLASSIC 1288 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1289 bd_addr_type_t addr_type = conn->address_type; 1290 #endif 1291 #ifdef HAVE_SCO_TRANSPORT 1292 hci_con_handle_t con_handle = conn->con_handle; 1293 #endif 1294 #endif 1295 1296 hci_connection_stop_timer(conn); 1297 1298 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1299 btstack_memory_hci_connection_free( conn ); 1300 1301 // now it's gone 1302 hci_emit_nr_connections_changed(); 1303 1304 #ifdef ENABLE_CLASSIC 1305 #ifdef ENABLE_SCO_OVER_HCI 1306 // update SCO 1307 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1308 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1309 } 1310 #endif 1311 #ifdef HAVE_SCO_TRANSPORT 1312 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1313 hci_stack->sco_transport->close(con_handle); 1314 } 1315 #endif 1316 #endif 1317 } 1318 1319 #ifdef ENABLE_CLASSIC 1320 1321 static const uint16_t hci_acl_packet_type_sizes[] = { 1322 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1323 HCI_ACL_DH1_SIZE, 0, 0, 0, 1324 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1325 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1326 }; 1327 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1328 0, // 3 slot packets 1329 1, // 5 slot packets 1330 25, // EDR 2 mpbs 1331 26, // EDR 3 mbps 1332 39, // 3 slot EDR packts 1333 40, // 5 slot EDR packet 1334 }; 1335 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1336 0x0f00, // 3 slot packets 1337 0xf000, // 5 slot packets 1338 0x1102, // EDR 2 mpbs 1339 0x2204, // EDR 3 mbps 1340 0x0300, // 3 slot EDR packts 1341 0x3000, // 5 slot EDR packet 1342 }; 1343 1344 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1345 // enable packet types based on size 1346 uint16_t packet_types = 0; 1347 unsigned int i; 1348 for (i=0;i<16;i++){ 1349 if (hci_acl_packet_type_sizes[i] == 0) continue; 1350 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1351 packet_types |= 1 << i; 1352 } 1353 } 1354 // disable packet types due to missing local supported features 1355 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1356 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1357 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1358 if (feature_set) continue; 1359 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1360 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1361 } 1362 return packet_types; 1363 } 1364 1365 uint16_t hci_usable_acl_packet_types(void){ 1366 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1367 // flip bits for "may not be used" 1368 return active_packet_types ^ 0x3306; 1369 } 1370 1371 void hci_enable_acl_packet_types(uint16_t packet_types){ 1372 hci_stack->enabled_packet_types_acl = packet_types; 1373 } 1374 1375 static const struct { 1376 uint8_t feature_index; 1377 uint16_t feature_packet_mask; 1378 } hci_sco_packet_type_feature_requirements[] = { 1379 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1380 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1381 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1382 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1383 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1384 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1385 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1386 }; 1387 1388 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1389 static const struct { 1390 uint16_t type; 1391 uint16_t payload_length; 1392 } hci_sco_packet_type_to_payload_length[] = { 1393 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1394 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1395 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1396 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1397 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1398 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1399 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1400 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1401 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1402 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1403 }; 1404 1405 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1406 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1407 unsigned int i; 1408 // disable packet types due to missing local supported features 1409 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1410 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1411 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1412 if (feature_set) continue; 1413 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); 1414 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1415 } 1416 return packet_types; 1417 } 1418 1419 uint16_t hci_usable_sco_packet_types(void){ 1420 return hci_stack->usable_packet_types_sco; 1421 } 1422 1423 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1424 uint8_t i; 1425 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1426 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1427 return hci_sco_packet_type_to_payload_length[i].payload_length; 1428 } 1429 } 1430 return 0; 1431 } 1432 1433 #endif 1434 1435 uint8_t* hci_get_outgoing_packet_buffer(void){ 1436 // hci packet buffer is >= acl data packet length 1437 return hci_stack->hci_packet_buffer; 1438 } 1439 1440 uint16_t hci_max_acl_data_packet_length(void){ 1441 return hci_stack->acl_data_packet_length; 1442 } 1443 1444 #ifdef ENABLE_CLASSIC 1445 bool hci_extended_sco_link_supported(void){ 1446 // No. 31, byte 3, bit 7 1447 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1448 } 1449 #endif 1450 1451 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1452 // No. 54, byte 6, bit 6 1453 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1454 } 1455 1456 #ifdef ENABLE_CLASSIC 1457 static bool gap_ssp_supported(void){ 1458 // No. 51, byte 6, bit 3 1459 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1460 } 1461 #endif 1462 1463 bool hci_classic_supported(void){ 1464 #ifdef ENABLE_CLASSIC 1465 // No. 37, byte 4, bit 5, = No BR/EDR Support 1466 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1467 #else 1468 return false; 1469 #endif 1470 } 1471 1472 bool hci_le_supported(void){ 1473 #ifdef ENABLE_BLE 1474 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1475 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1476 #else 1477 return false; 1478 #endif 1479 } 1480 1481 static bool hci_command_supported(uint8_t command_index){ 1482 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1483 } 1484 1485 #ifdef ENABLE_BLE 1486 1487 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1488 bool hci_le_extended_advertising_supported(void){ 1489 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1490 } 1491 #endif 1492 1493 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1494 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1495 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1496 } else { 1497 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1498 } 1499 } 1500 1501 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1502 *addr_type = hci_stack->le_own_addr_type; 1503 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1504 } 1505 1506 #ifdef ENABLE_LE_PERIPHERAL 1507 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1508 *addr_type = hci_stack->le_advertisements_own_addr_type; 1509 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1510 }; 1511 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1512 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1513 if (advertising_handle == 0){ 1514 gap_le_get_own_advertisements_address(addr_type, addr); 1515 } else { 1516 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1517 if (advertising_set != NULL){ 1518 switch (advertising_set->extended_params.own_address_type){ 1519 case BD_ADDR_TYPE_LE_PUBLIC: 1520 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1521 memcpy(addr, hci_stack->local_bd_addr, 6); 1522 break; 1523 case BD_ADDR_TYPE_LE_RANDOM: 1524 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1525 memcpy(addr, advertising_set->random_address, 6); 1526 break; 1527 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1528 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1529 // do nothing as random address was already set from enhanced connection complete 1530 break; 1531 default: 1532 break; 1533 } 1534 } 1535 } 1536 }; 1537 #endif 1538 #endif 1539 1540 #ifdef ENABLE_LE_CENTRAL 1541 1542 /** 1543 * @brief Get own addr type and address used for LE connections (Central) 1544 */ 1545 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1546 *addr_type = hci_stack->le_connection_own_addr_type; 1547 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1548 } 1549 1550 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1551 1552 uint16_t offset = 3; 1553 uint8_t num_reports = packet[offset]; 1554 offset += 1; 1555 1556 uint16_t i; 1557 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1558 for (i=0; (i<num_reports) && (offset < size);i++){ 1559 // sanity checks on data_length: 1560 uint8_t data_length = packet[offset + 8]; 1561 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1562 if ((offset + 9u + data_length + 1u) > size) return; 1563 // setup event 1564 uint8_t event_size = 10u + data_length; 1565 uint16_t pos = 0; 1566 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1567 event[pos++] = event_size; 1568 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1569 offset += 8; 1570 pos += 8; 1571 event[pos++] = packet[offset + 1 + data_length]; // rssi 1572 event[pos++] = data_length; 1573 offset++; 1574 (void)memcpy(&event[pos], &packet[offset], data_length); 1575 pos += data_length; 1576 offset += data_length + 1u; // rssi 1577 hci_emit_event(event, pos, 1); 1578 } 1579 } 1580 1581 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1582 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1583 uint16_t offset = 3; 1584 uint8_t num_reports = packet[offset++]; 1585 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1586 uint8_t i; 1587 for (i=0; (i<num_reports) && (offset < size);i++){ 1588 // sanity checks on data_length: 1589 uint16_t data_length = packet[offset + 23]; 1590 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1591 if ((offset + 24u + data_length) > size) return; 1592 uint16_t event_type = little_endian_read_16(packet, offset); 1593 offset += 2; 1594 if ((event_type & 0x10) != 0) { 1595 // setup legacy event 1596 uint8_t legacy_event_type; 1597 switch (event_type){ 1598 case 0b0010011: 1599 // ADV_IND 1600 legacy_event_type = 0; 1601 break; 1602 case 0b0010101: 1603 // ADV_DIRECT_IND 1604 legacy_event_type = 1; 1605 break; 1606 case 0b0010010: 1607 // ADV_SCAN_IND 1608 legacy_event_type = 2; 1609 break; 1610 case 0b0010000: 1611 // ADV_NONCONN_IND 1612 legacy_event_type = 3; 1613 break; 1614 case 0b0011011: 1615 case 0b0011010: 1616 // SCAN_RSP 1617 legacy_event_type = 4; 1618 break; 1619 default: 1620 legacy_event_type = 0; 1621 break; 1622 } 1623 uint16_t pos = 0; 1624 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1625 event[pos++] = 10u + data_length; 1626 event[pos++] = legacy_event_type; 1627 // copy address type + address 1628 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1629 offset += 7; 1630 pos += 7; 1631 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1632 offset += 4; 1633 // copy rssi 1634 event[pos++] = packet[offset++]; 1635 // skip periodic advertising interval and direct address 1636 offset += 9; 1637 // copy data len + data; 1638 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1639 pos += 1 +data_length; 1640 offset += 1+ data_length; 1641 hci_emit_event(event, pos, 1); 1642 } else { 1643 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1644 uint8_t report_len = 24 + data_length; 1645 event[1] = report_len; 1646 little_endian_store_16(event, 2, event_type); 1647 memcpy(&event[4], &packet[offset], report_len); 1648 offset += report_len; 1649 hci_emit_event(event, 2 + report_len, 1); 1650 } 1651 } 1652 } 1653 #endif 1654 1655 #endif 1656 #endif 1657 1658 #ifdef ENABLE_BLE 1659 #ifdef ENABLE_LE_PERIPHERAL 1660 static void hci_update_advertisements_enabled_for_current_roles(void){ 1661 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1662 // get number of active le slave connections 1663 int num_slave_connections = 0; 1664 btstack_linked_list_iterator_t it; 1665 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1666 while (btstack_linked_list_iterator_has_next(&it)){ 1667 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1668 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1669 if (con->state != OPEN) continue; 1670 if (con->role != HCI_ROLE_SLAVE) continue; 1671 if (!hci_is_le_connection(con)) continue; 1672 num_slave_connections++; 1673 } 1674 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1675 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1676 } else { 1677 hci_stack->le_advertisements_enabled_for_current_roles = false; 1678 } 1679 } 1680 #endif 1681 #endif 1682 1683 #ifdef ENABLE_CLASSIC 1684 static void gap_run_set_local_name(void){ 1685 hci_reserve_packet_buffer(); 1686 uint8_t * packet = hci_stack->hci_packet_buffer; 1687 // construct HCI Command and send 1688 uint16_t opcode = hci_write_local_name.opcode; 1689 packet[0] = opcode & 0xff; 1690 packet[1] = opcode >> 8; 1691 packet[2] = DEVICE_NAME_LEN; 1692 memset(&packet[3], 0, DEVICE_NAME_LEN); 1693 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1694 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1695 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1696 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1697 // expand '00:00:00:00:00:00' in name with bd_addr 1698 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1699 hci_send_prepared_cmd_packet(); 1700 } 1701 1702 static void gap_run_set_eir_data(void){ 1703 hci_reserve_packet_buffer(); 1704 uint8_t * packet = hci_stack->hci_packet_buffer; 1705 // construct HCI Command in-place and send 1706 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1707 uint16_t offset = 0; 1708 packet[offset++] = opcode & 0xff; 1709 packet[offset++] = opcode >> 8; 1710 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1711 packet[offset++] = 0; // FEC not required 1712 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1713 if (hci_stack->eir_data){ 1714 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1715 ad_context_t context; 1716 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1717 uint8_t data_type = ad_iterator_get_data_type(&context); 1718 uint8_t size = ad_iterator_get_data_len(&context); 1719 const uint8_t *data = ad_iterator_get_data(&context); 1720 // copy item 1721 packet[offset++] = size + 1; 1722 packet[offset++] = data_type; 1723 memcpy(&packet[offset], data, size); 1724 // update name item 1725 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1726 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1727 } 1728 offset += size; 1729 } 1730 } else { 1731 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1732 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1733 packet[offset++] = bytes_to_copy + 1; 1734 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1735 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1736 // expand '00:00:00:00:00:00' in name with bd_addr 1737 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1738 } 1739 hci_send_prepared_cmd_packet(); 1740 } 1741 1742 static void hci_run_gap_tasks_classic(void){ 1743 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1744 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1745 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1746 return; 1747 } 1748 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1749 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1750 gap_run_set_local_name(); 1751 return; 1752 } 1753 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1754 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1755 gap_run_set_eir_data(); 1756 return; 1757 } 1758 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1759 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1760 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1761 return; 1762 } 1763 // write page scan activity 1764 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1765 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1766 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1767 return; 1768 } 1769 // write page scan type 1770 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1771 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1772 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1773 return; 1774 } 1775 // write page timeout 1776 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1777 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1778 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1779 return; 1780 } 1781 // send scan enable 1782 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1783 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1784 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1785 return; 1786 } 1787 // send write scan activity 1788 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1789 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1790 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1791 return; 1792 } 1793 // send write inquiry transmit power level 1794 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1795 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1796 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1797 return; 1798 } 1799 } 1800 #endif 1801 1802 #ifndef HAVE_HOST_CONTROLLER_API 1803 1804 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1805 if (!hci_stack->config) return 0; 1806 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1807 // Limit baud rate for Broadcom chipsets to 3 mbps 1808 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1809 baud_rate = 3000000; 1810 } 1811 return baud_rate; 1812 } 1813 1814 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1815 UNUSED(ds); 1816 1817 switch (hci_stack->substate){ 1818 case HCI_INIT_W4_SEND_RESET: 1819 log_info("Resend HCI Reset"); 1820 hci_stack->substate = HCI_INIT_SEND_RESET; 1821 hci_stack->num_cmd_packets = 1; 1822 hci_run(); 1823 break; 1824 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1825 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1826 if (hci_stack->hci_transport->reset_link){ 1827 hci_stack->hci_transport->reset_link(); 1828 } 1829 1830 /* fall through */ 1831 1832 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1833 log_info("Resend HCI Reset - CSR Warm Boot"); 1834 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1835 hci_stack->num_cmd_packets = 1; 1836 hci_run(); 1837 break; 1838 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1839 if (hci_stack->hci_transport->set_baudrate){ 1840 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1841 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1842 hci_stack->hci_transport->set_baudrate(baud_rate); 1843 } 1844 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1845 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1846 if (hci_stack->hci_transport->reset_link){ 1847 log_info("Link Reset"); 1848 hci_stack->hci_transport->reset_link(); 1849 } 1850 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1851 hci_run(); 1852 } 1853 break; 1854 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1855 // otherwise continue 1856 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1857 hci_send_cmd(&hci_read_local_supported_commands); 1858 break; 1859 default: 1860 break; 1861 } 1862 } 1863 #endif 1864 1865 static void hci_initializing_next_state(void){ 1866 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1867 } 1868 1869 static void hci_init_done(void){ 1870 // done. tell the app 1871 log_info("hci_init_done -> HCI_STATE_WORKING"); 1872 hci_stack->state = HCI_STATE_WORKING; 1873 hci_emit_state(); 1874 } 1875 1876 // assumption: hci_can_send_command_packet_now() == true 1877 static void hci_initializing_run(void){ 1878 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1879 1880 if (!hci_can_send_command_packet_now()) return; 1881 1882 #ifndef HAVE_HOST_CONTROLLER_API 1883 bool need_baud_change = hci_stack->config 1884 && hci_stack->chipset 1885 && hci_stack->chipset->set_baudrate_command 1886 && hci_stack->hci_transport->set_baudrate 1887 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1888 #endif 1889 1890 switch (hci_stack->substate){ 1891 case HCI_INIT_SEND_RESET: 1892 hci_state_reset(); 1893 1894 #ifndef HAVE_HOST_CONTROLLER_API 1895 // prepare reset if command complete not received in 100ms 1896 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1897 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1898 btstack_run_loop_add_timer(&hci_stack->timeout); 1899 #endif 1900 // send command 1901 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1902 hci_send_cmd(&hci_reset); 1903 break; 1904 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1905 hci_send_cmd(&hci_read_local_version_information); 1906 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1907 break; 1908 1909 #ifndef HAVE_HOST_CONTROLLER_API 1910 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1911 hci_state_reset(); 1912 // prepare reset if command complete not received in 100ms 1913 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1914 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1915 btstack_run_loop_add_timer(&hci_stack->timeout); 1916 // send command 1917 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1918 hci_send_cmd(&hci_reset); 1919 break; 1920 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1921 hci_state_reset(); 1922 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1923 hci_send_cmd(&hci_reset); 1924 break; 1925 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1926 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1927 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1928 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1929 hci_send_prepared_cmd_packet(); 1930 break; 1931 } 1932 case HCI_INIT_SET_BD_ADDR: 1933 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1934 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1935 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1936 hci_send_prepared_cmd_packet(); 1937 break; 1938 case HCI_INIT_SEND_READ_LOCAL_NAME: 1939 #ifdef ENABLE_CLASSIC 1940 hci_send_cmd(&hci_read_local_name); 1941 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1942 break; 1943 #endif 1944 /* fall through */ 1945 1946 case HCI_INIT_SEND_BAUD_CHANGE: 1947 if (need_baud_change) { 1948 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1949 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1950 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1951 hci_send_prepared_cmd_packet(); 1952 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1953 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1954 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1955 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1956 btstack_run_loop_add_timer(&hci_stack->timeout); 1957 } 1958 break; 1959 } 1960 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1961 1962 /* fall through */ 1963 1964 case HCI_INIT_CUSTOM_INIT: 1965 case HCI_INIT_CUSTOM_PRE_INIT: 1966 // Custom initialization 1967 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1968 hci_reserve_packet_buffer(); 1969 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1970 bool send_cmd = false; 1971 switch (hci_stack->chipset_result){ 1972 case BTSTACK_CHIPSET_VALID_COMMAND: 1973 send_cmd = true; 1974 switch (hci_stack->substate){ 1975 case HCI_INIT_CUSTOM_INIT: 1976 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1977 break; 1978 case HCI_INIT_CUSTOM_PRE_INIT: 1979 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1980 break; 1981 default: 1982 btstack_assert(false); 1983 break; 1984 } 1985 break; 1986 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1987 send_cmd = true; 1988 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1989 log_info("CSR Warm Boot"); 1990 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1991 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1992 btstack_run_loop_add_timer(&hci_stack->timeout); 1993 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1994 && hci_stack->config 1995 && hci_stack->chipset 1996 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1997 && hci_stack->hci_transport->set_baudrate 1998 && hci_transport_uart_get_main_baud_rate()){ 1999 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2000 } else { 2001 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2002 } 2003 break; 2004 default: 2005 break; 2006 } 2007 2008 if (send_cmd){ 2009 hci_send_prepared_cmd_packet(); 2010 break; 2011 } else { 2012 hci_release_packet_buffer(); 2013 } 2014 log_info("Init script done"); 2015 2016 // Custom Pre-Init complete, start regular init with HCI Reset 2017 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2018 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2019 hci_send_cmd(&hci_reset); 2020 break; 2021 } 2022 2023 // Init script download on Broadcom chipsets causes: 2024 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2025 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2026 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2027 2028 // - baud rate to reset, restore UART baud rate if needed 2029 if (need_baud_change) { 2030 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2031 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2032 hci_stack->hci_transport->set_baudrate(baud_rate); 2033 } 2034 2035 uint16_t bcm_delay_ms = 300; 2036 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2037 // -> Work around: wait here. 2038 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2039 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2040 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2041 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2042 btstack_run_loop_add_timer(&hci_stack->timeout); 2043 break; 2044 } 2045 } 2046 #endif 2047 /* fall through */ 2048 2049 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2050 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2051 hci_send_cmd(&hci_read_local_supported_commands); 2052 break; 2053 case HCI_INIT_READ_BD_ADDR: 2054 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2055 hci_send_cmd(&hci_read_bd_addr); 2056 break; 2057 case HCI_INIT_READ_BUFFER_SIZE: 2058 // only read buffer size if supported 2059 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2060 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2061 hci_send_cmd(&hci_read_buffer_size); 2062 break; 2063 } 2064 2065 /* fall through */ 2066 2067 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2068 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2069 hci_send_cmd(&hci_read_local_supported_features); 2070 break; 2071 2072 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2073 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2074 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2075 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2076 break; 2077 case HCI_INIT_HOST_BUFFER_SIZE: 2078 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2079 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2080 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2081 break; 2082 #endif 2083 2084 case HCI_INIT_SET_EVENT_MASK: 2085 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2086 if (hci_le_supported()){ 2087 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2088 } else { 2089 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2090 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2091 } 2092 break; 2093 2094 case HCI_INIT_SET_EVENT_MASK_2: 2095 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2096 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2097 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2098 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2099 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2100 // Encryption Change Event v2 - bit 25 2101 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2102 break; 2103 } 2104 2105 #ifdef ENABLE_CLASSIC 2106 /* fall through */ 2107 2108 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2109 if (hci_classic_supported() && gap_ssp_supported()){ 2110 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2111 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2112 break; 2113 } 2114 2115 /* fall through */ 2116 2117 case HCI_INIT_WRITE_INQUIRY_MODE: 2118 if (hci_classic_supported()){ 2119 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2120 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2121 break; 2122 } 2123 2124 /* fall through */ 2125 2126 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2127 // skip write secure connections host support if not supported or disabled 2128 if (hci_classic_supported() && hci_stack->secure_connections_enable 2129 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2130 hci_stack->secure_connections_active = true; 2131 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2132 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2133 break; 2134 } 2135 2136 /* fall through */ 2137 2138 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2139 // skip set min encryption key size 2140 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2141 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2142 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2143 break; 2144 } 2145 2146 #ifdef ENABLE_SCO_OVER_HCI 2147 /* fall through */ 2148 2149 // only sent if ENABLE_SCO_OVER_HCI is defined 2150 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2151 // skip write synchronous flow control if not supported 2152 if (hci_classic_supported() 2153 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2154 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2155 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2156 break; 2157 } 2158 /* fall through */ 2159 2160 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2161 // skip write default erroneous data reporting if not supported 2162 if (hci_classic_supported() 2163 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2164 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2165 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2166 break; 2167 } 2168 #endif 2169 2170 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2171 /* fall through */ 2172 2173 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2174 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2175 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2176 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2177 #ifdef ENABLE_SCO_OVER_HCI 2178 log_info("BCM: Route SCO data via HCI transport"); 2179 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2180 #endif 2181 #ifdef ENABLE_SCO_OVER_PCM 2182 log_info("BCM: Route SCO data via PCM interface"); 2183 #ifdef ENABLE_BCM_PCM_WBS 2184 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2185 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2186 #else 2187 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2188 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2189 #endif 2190 #endif 2191 break; 2192 } 2193 #endif 2194 2195 #ifdef ENABLE_SCO_OVER_PCM 2196 /* fall through */ 2197 2198 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2199 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2200 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2201 log_info("BCM: Config PCM interface for I2S"); 2202 #ifdef ENABLE_BCM_PCM_WBS 2203 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2204 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2205 #else 2206 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2207 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2208 #endif 2209 break; 2210 } 2211 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2212 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2213 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2214 log_info("BCM: Config PCM Data format"); 2215 // msb first, fill bits 0, left justified 2216 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2217 break; 2218 } 2219 #ifdef HAVE_BCM_PCM2 2220 case HCI_INIT_BCM_PCM2_SETUP: 2221 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2222 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2223 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2224 uint32_t pcm_clock_freq; 2225 uint8_t ch_0_period; 2226 #ifdef ENABLE_BCM_PCM_WBS 2227 // 512 kHz, resample 8 kHz to 16 khz 2228 pcm_clock_freq = 512000; 2229 ch_0_period = 1; 2230 #else 2231 // 256 khz, 8 khz output 2232 pcm_clock_freq = 256000; 2233 ch_0_period = 0; 2234 #endif 2235 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2236 hci_send_cmd(&hci_bcm_pcm2_setup, 2237 0x00, // Action = Write 2238 0x00, // Test_Options = None 2239 op_mode, // Op_Mode 2240 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2241 pcm_clock_freq, // PCM_Clock_Freq 2242 0x01, // Sync_Signal_Width 2243 0x0F, // Slot_Width 2244 0x01, // NumberOfSlots 2245 0x00, // Bank_0_Fill_Mode = 0s 2246 0x00, // Bank_0_Number_of_Fill_Bits 2247 0x00, // Bank_0_Programmable_Fill_Data 2248 0x00, // Bank_1_Fill_Mode = 0s 2249 0x00, // Bank_1_Number_of_Fill_Bits 2250 0x00, // Bank_1_Programmable_Fill_Data 2251 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2252 0x00, // Ch_0_Slot_Number 2253 0x01, // Ch_1_Slot_Number 2254 0x02, // Ch_2_Slot_Number 2255 0x03, // Ch_3_Slot_Number 2256 0x04, // Ch_4_Slot_Number 2257 ch_0_period, // Ch_0_Period 2258 0x00, // Ch_1_Period 2259 0x00 // Ch_2_Period 2260 ); 2261 break; 2262 } 2263 #endif 2264 #endif /* ENABLE_SCO_OVER_PCM */ 2265 #endif /* ENABLE_CLASSIC */ 2266 2267 #ifdef ENABLE_BLE 2268 /* fall through */ 2269 2270 // LE INIT 2271 case HCI_INIT_LE_READ_BUFFER_SIZE: 2272 if (hci_le_supported()){ 2273 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2274 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2275 hci_send_cmd(&hci_le_read_buffer_size_v2); 2276 } else { 2277 hci_send_cmd(&hci_le_read_buffer_size); 2278 } 2279 break; 2280 } 2281 2282 /* fall through */ 2283 2284 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2285 // skip write le host if not supported (e.g. on LE only EM9301) 2286 if (hci_le_supported() 2287 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2288 // LE Supported Host = 1, Simultaneous Host = 0 2289 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2290 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2291 break; 2292 } 2293 2294 /* fall through */ 2295 2296 case HCI_INIT_LE_SET_EVENT_MASK: 2297 if (hci_le_supported()){ 2298 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2299 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2300 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2301 #else 2302 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2303 #endif 2304 break; 2305 } 2306 #endif 2307 2308 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2309 /* fall through */ 2310 2311 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2312 if (hci_le_supported() 2313 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2314 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2315 hci_send_cmd(&hci_le_read_maximum_data_length); 2316 break; 2317 } 2318 2319 /* fall through */ 2320 2321 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2322 if (hci_le_supported() 2323 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2324 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2325 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2326 break; 2327 } 2328 #endif 2329 2330 #ifdef ENABLE_LE_CENTRAL 2331 /* fall through */ 2332 2333 case HCI_INIT_READ_WHITE_LIST_SIZE: 2334 if (hci_le_supported()){ 2335 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2336 hci_send_cmd(&hci_le_read_white_list_size); 2337 break; 2338 } 2339 2340 #endif 2341 2342 #ifdef ENABLE_LE_PERIPHERAL 2343 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2344 /* fall through */ 2345 2346 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2347 if (hci_le_extended_advertising_supported()){ 2348 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2349 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2350 break; 2351 } 2352 #endif 2353 #endif 2354 /* fall through */ 2355 2356 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2357 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2358 if (hci_le_supported()) { 2359 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2360 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2361 break; 2362 } 2363 #endif 2364 2365 /* fall through */ 2366 2367 case HCI_INIT_DONE: 2368 hci_stack->substate = HCI_INIT_DONE; 2369 // main init sequence complete 2370 #ifdef ENABLE_CLASSIC 2371 // check if initial Classic GAP Tasks are completed 2372 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2373 hci_run_gap_tasks_classic(); 2374 break; 2375 } 2376 #endif 2377 #ifdef ENABLE_BLE 2378 #ifdef ENABLE_LE_CENTRAL 2379 // check if initial LE GAP Tasks are completed 2380 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2381 hci_run_general_gap_le(); 2382 break; 2383 } 2384 #endif 2385 #endif 2386 hci_init_done(); 2387 break; 2388 2389 default: 2390 return; 2391 } 2392 } 2393 2394 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2395 bool command_completed = false; 2396 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2397 uint16_t opcode = little_endian_read_16(packet,3); 2398 if (opcode == hci_stack->last_cmd_opcode){ 2399 command_completed = true; 2400 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2401 } else { 2402 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2403 } 2404 } 2405 2406 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2407 uint8_t status = packet[2]; 2408 uint16_t opcode = little_endian_read_16(packet,4); 2409 if (opcode == hci_stack->last_cmd_opcode){ 2410 if (status){ 2411 command_completed = true; 2412 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2413 } else { 2414 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2415 } 2416 } else { 2417 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2418 } 2419 } 2420 #ifndef HAVE_HOST_CONTROLLER_API 2421 // Vendor == CSR 2422 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2423 // TODO: track actual command 2424 command_completed = true; 2425 } 2426 2427 // Vendor == Toshiba 2428 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2429 // TODO: track actual command 2430 command_completed = true; 2431 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2432 hci_stack->num_cmd_packets = 1; 2433 } 2434 #endif 2435 2436 return command_completed; 2437 } 2438 2439 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2440 2441 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2442 2443 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2444 2445 #ifndef HAVE_HOST_CONTROLLER_API 2446 2447 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2448 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2449 // 2450 // HCI Reset 2451 // Timeout 100 ms 2452 // HCI Reset 2453 // Command Complete Reset 2454 // HCI Read Local Version Information 2455 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2456 // hang... 2457 // 2458 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2459 if (!command_completed 2460 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2461 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2462 2463 uint16_t opcode = little_endian_read_16(packet,3); 2464 if (opcode == hci_reset.opcode){ 2465 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2466 return; 2467 } 2468 } 2469 2470 // CSR & H5 2471 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2472 if (!command_completed 2473 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2474 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2475 2476 uint16_t opcode = little_endian_read_16(packet,3); 2477 if (opcode == hci_reset.opcode){ 2478 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2479 return; 2480 } 2481 } 2482 2483 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2484 // fix: Correct substate and behave as command below 2485 if (command_completed){ 2486 switch (hci_stack->substate){ 2487 case HCI_INIT_SEND_RESET: 2488 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2489 break; 2490 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2491 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2492 break; 2493 default: 2494 break; 2495 } 2496 } 2497 2498 #endif 2499 2500 if (!command_completed) return; 2501 2502 bool need_baud_change = false; 2503 bool need_addr_change = false; 2504 2505 #ifndef HAVE_HOST_CONTROLLER_API 2506 need_baud_change = hci_stack->config 2507 && hci_stack->chipset 2508 && hci_stack->chipset->set_baudrate_command 2509 && hci_stack->hci_transport->set_baudrate 2510 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2511 2512 need_addr_change = hci_stack->custom_bd_addr_set 2513 && hci_stack->chipset 2514 && hci_stack->chipset->set_bd_addr_command; 2515 #endif 2516 2517 switch(hci_stack->substate){ 2518 2519 #ifndef HAVE_HOST_CONTROLLER_API 2520 case HCI_INIT_SEND_RESET: 2521 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2522 // fix: just correct substate and behave as command below 2523 2524 /* fall through */ 2525 #endif 2526 2527 case HCI_INIT_W4_SEND_RESET: 2528 btstack_run_loop_remove_timer(&hci_stack->timeout); 2529 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2530 return; 2531 2532 #ifndef HAVE_HOST_CONTROLLER_API 2533 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2534 // for STLC2500D, baud rate change already happened. 2535 // for others, baud rate gets changed now 2536 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2537 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2538 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2539 hci_stack->hci_transport->set_baudrate(baud_rate); 2540 } 2541 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2542 return; 2543 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2544 btstack_run_loop_remove_timer(&hci_stack->timeout); 2545 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2546 return; 2547 case HCI_INIT_W4_CUSTOM_INIT: 2548 // repeat custom init 2549 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2550 return; 2551 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2552 // repeat custom init 2553 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2554 return; 2555 #endif 2556 2557 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2558 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2559 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2560 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2561 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2562 return; 2563 } 2564 if (need_addr_change){ 2565 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2566 return; 2567 } 2568 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2569 return; 2570 #ifndef HAVE_HOST_CONTROLLER_API 2571 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2572 if (need_baud_change){ 2573 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2574 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2575 hci_stack->hci_transport->set_baudrate(baud_rate); 2576 } 2577 if (need_addr_change){ 2578 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2579 return; 2580 } 2581 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2582 return; 2583 case HCI_INIT_W4_SET_BD_ADDR: 2584 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2585 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2586 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2587 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2588 return; 2589 } 2590 // skipping st warm boot 2591 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2592 return; 2593 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2594 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2595 return; 2596 #endif 2597 2598 case HCI_INIT_DONE: 2599 // set state if we came here by fall through 2600 hci_stack->substate = HCI_INIT_DONE; 2601 return; 2602 2603 default: 2604 break; 2605 } 2606 hci_initializing_next_state(); 2607 } 2608 2609 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2610 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2611 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2612 // check if we have been aware of the HCI connection 2613 switch (conn->state){ 2614 case SENT_CREATE_CONNECTION: 2615 case RECEIVED_CONNECTION_REQUEST: 2616 case ACCEPTED_CONNECTION_REQUEST: 2617 break; 2618 default: 2619 return; 2620 } 2621 2622 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2623 bd_addr_t bd_address; 2624 (void)memcpy(&bd_address, conn->address, 6); 2625 2626 #ifdef ENABLE_CLASSIC 2627 // cache needed data 2628 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2629 #endif 2630 2631 // connection failed, remove entry 2632 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2633 btstack_memory_hci_connection_free( conn ); 2634 2635 #ifdef ENABLE_CLASSIC 2636 // notify client if dedicated bonding 2637 if (notify_dedicated_bonding_failed){ 2638 log_info("hci notify_dedicated_bonding_failed"); 2639 hci_emit_dedicated_bonding_result(bd_address, status); 2640 } 2641 2642 // if authentication error, also delete link key 2643 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2644 gap_drop_link_key_for_bd_addr(bd_address); 2645 } 2646 #else 2647 UNUSED(status); 2648 #endif 2649 } 2650 2651 #ifdef ENABLE_CLASSIC 2652 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2653 // SSP Controller 2654 if (features[6] & (1 << 3)){ 2655 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2656 } 2657 // eSCO 2658 if (features[3] & (1<<7)){ 2659 conn->remote_supported_features[0] |= 1; 2660 } 2661 // Extended features 2662 if (features[7] & (1<<7)){ 2663 conn->remote_supported_features[0] |= 2; 2664 } 2665 // SCO packet types 2666 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2667 } 2668 2669 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2670 // SSP Host 2671 if (features[0] & (1 << 0)){ 2672 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2673 } 2674 // SC Host 2675 if (features[0] & (1 << 3)){ 2676 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2677 } 2678 } 2679 2680 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2681 // SC Controller 2682 if (features[1] & (1 << 0)){ 2683 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2684 } 2685 } 2686 2687 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2688 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2689 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2690 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2691 if (conn->bonding_flags & BONDING_DEDICATED){ 2692 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2693 } 2694 } 2695 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2696 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2697 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2698 } 2699 2700 #endif 2701 2702 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2703 // handle BT initialization 2704 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2705 hci_initializing_event_handler(packet, size); 2706 } 2707 2708 // help with BT sleep 2709 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2710 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2711 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2712 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2713 hci_initializing_next_state(); 2714 } 2715 } 2716 2717 #ifdef ENABLE_CLASSIC 2718 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2719 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2720 conn->requested_security_level = LEVEL_0; 2721 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2722 hci_emit_security_level(conn->con_handle, security_level); 2723 2724 // dedicated bonding 2725 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2726 conn->bonding_flags &= ~BONDING_DEDICATED; 2727 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2728 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2729 // emit dedicated bonding complete, don't disconnect 2730 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2731 #else 2732 // request disconnect, event is emitted after disconnect 2733 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2734 #endif 2735 } 2736 } 2737 2738 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2739 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2740 conn->encryption_key_size = encryption_key_size; 2741 2742 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2743 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2744 hci_handle_mutual_authentication_completed(conn); 2745 } else { 2746 // otherwise trigger remote feature request and send authentication request 2747 hci_trigger_remote_features_for_connection(conn); 2748 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2749 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2750 } 2751 } 2752 } 2753 #endif 2754 2755 static void hci_store_local_supported_commands(const uint8_t * packet){ 2756 // create mapping table 2757 #define X(name, offset, bit) { offset, bit }, 2758 static struct { 2759 uint8_t byte_offset; 2760 uint8_t bit_position; 2761 } supported_hci_commands_map [] = { 2762 SUPPORTED_HCI_COMMANDS 2763 }; 2764 #undef X 2765 2766 // create names for debug purposes 2767 #ifdef ENABLE_LOG_DEBUG 2768 #define X(name, offset, bit) #name, 2769 static const char * command_names[] = { 2770 SUPPORTED_HCI_COMMANDS 2771 }; 2772 #undef X 2773 #endif 2774 2775 hci_stack->local_supported_commands = 0; 2776 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2777 uint16_t i; 2778 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2779 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2780 #ifdef ENABLE_LOG_DEBUG 2781 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); 2782 #else 2783 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2784 #endif 2785 hci_stack->local_supported_commands |= (1LU << i); 2786 } 2787 } 2788 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2789 } 2790 2791 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2792 UNUSED(size); 2793 2794 uint8_t status = 0; 2795 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2796 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2797 } 2798 uint16_t manufacturer; 2799 #ifdef ENABLE_CLASSIC 2800 hci_connection_t * conn; 2801 #endif 2802 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2803 hci_con_handle_t handle; 2804 #endif 2805 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2806 le_audio_cig_t * cig; 2807 #endif 2808 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2809 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2810 #endif 2811 2812 // get num cmd packets - limit to 1 to reduce complexity 2813 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2814 2815 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2816 switch (opcode){ 2817 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2818 if (status) break; 2819 // terminate, name 248 chars 2820 packet[6+248] = 0; 2821 log_info("local name: %s", &packet[6]); 2822 break; 2823 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2824 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2825 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2826 uint16_t acl_len = little_endian_read_16(packet, 6); 2827 uint16_t sco_len = packet[8]; 2828 2829 // determine usable ACL/SCO payload size 2830 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2831 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2832 2833 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2834 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2835 2836 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2837 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2838 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2839 } 2840 break; 2841 case HCI_OPCODE_HCI_READ_RSSI: 2842 if (status == ERROR_CODE_SUCCESS){ 2843 uint8_t event[5]; 2844 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2845 event[1] = 3; 2846 (void)memcpy(&event[2], &packet[6], 3); 2847 hci_emit_event(event, sizeof(event), 1); 2848 } 2849 break; 2850 #ifdef ENABLE_BLE 2851 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2852 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2853 hci_stack->le_iso_packets_total_num = packet[11]; 2854 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2855 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2856 2857 /* fall through */ 2858 2859 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2860 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2861 hci_stack->le_acl_packets_total_num = packet[8]; 2862 // determine usable ACL payload size 2863 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2864 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2865 } 2866 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); 2867 break; 2868 #endif 2869 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2870 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2871 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2872 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2873 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); 2874 break; 2875 #endif 2876 #ifdef ENABLE_LE_CENTRAL 2877 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2878 hci_stack->le_whitelist_capacity = packet[6]; 2879 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2880 break; 2881 #endif 2882 #ifdef ENABLE_LE_PERIPHERAL 2883 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2884 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2885 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2886 break; 2887 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2888 if (hci_stack->le_advertising_set_in_current_command != 0) { 2889 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2890 hci_stack->le_advertising_set_in_current_command = 0; 2891 if (advertising_set == NULL) break; 2892 uint8_t adv_status = packet[6]; 2893 uint8_t tx_power = packet[7]; 2894 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 }; 2895 if (adv_status == 0){ 2896 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2897 } 2898 hci_emit_event(event, sizeof(event), 1); 2899 } 2900 break; 2901 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2902 if (hci_stack->le_advertising_set_in_current_command != 0) { 2903 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2904 hci_stack->le_advertising_set_in_current_command = 0; 2905 if (advertising_set == NULL) break; 2906 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2907 if (status == 0){ 2908 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2909 } 2910 hci_emit_event(event, sizeof(event), 1); 2911 } 2912 break; 2913 #endif 2914 #endif 2915 case HCI_OPCODE_HCI_READ_BD_ADDR: 2916 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2917 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2918 #ifdef ENABLE_CLASSIC 2919 if (hci_stack->link_key_db){ 2920 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2921 } 2922 #endif 2923 break; 2924 #ifdef ENABLE_CLASSIC 2925 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2926 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2927 break; 2928 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2929 if (status == ERROR_CODE_SUCCESS) { 2930 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2931 } else { 2932 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2933 } 2934 break; 2935 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2936 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2937 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2938 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2939 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2940 hci_emit_event(event, sizeof(event), 1); 2941 } 2942 break; 2943 #endif 2944 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2945 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2946 2947 #ifdef ENABLE_CLASSIC 2948 // determine usable ACL packet types based on host buffer size and supported features 2949 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]); 2950 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2951 // determine usable SCO packet types based on supported features 2952 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2953 &hci_stack->local_supported_features[0]); 2954 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2955 #endif 2956 // Classic/LE 2957 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2958 break; 2959 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2960 manufacturer = little_endian_read_16(packet, 10); 2961 // map Cypress & Infineon to Broadcom 2962 switch (manufacturer){ 2963 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2964 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2965 log_info("Treat Cypress/Infineon as Broadcom"); 2966 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2967 little_endian_store_16(packet, 10, manufacturer); 2968 break; 2969 default: 2970 break; 2971 } 2972 hci_stack->manufacturer = manufacturer; 2973 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2974 break; 2975 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2976 hci_store_local_supported_commands(packet); 2977 break; 2978 #ifdef ENABLE_CLASSIC 2979 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2980 if (status) return; 2981 hci_stack->synchronous_flow_control_enabled = 1; 2982 break; 2983 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2984 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2985 conn = hci_connection_for_handle(handle); 2986 if (conn != NULL) { 2987 uint8_t key_size = 0; 2988 if (status == 0){ 2989 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2990 log_info("Handle %04x key Size: %u", handle, key_size); 2991 } else { 2992 key_size = 1; 2993 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2994 } 2995 hci_handle_read_encryption_key_size_complete(conn, key_size); 2996 } 2997 break; 2998 // assert pairing complete event is emitted. 2999 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3000 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3001 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3002 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3003 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3004 // lookup connection by gap pairing addr 3005 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3006 if (conn == NULL) break; 3007 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3008 break; 3009 3010 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3011 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3012 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3013 uint8_t event[67]; 3014 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3015 event[1] = 65; 3016 (void)memset(&event[2], 0, 65); 3017 if (status == ERROR_CODE_SUCCESS){ 3018 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3019 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3020 event[2] = 3; 3021 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3022 } else { 3023 event[2] = 1; 3024 } 3025 } 3026 hci_emit_event(event, sizeof(event), 0); 3027 break; 3028 } 3029 3030 // note: only needed if user does not provide OOB data 3031 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3032 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3033 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3034 if (conn == NULL) break; 3035 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3036 break; 3037 #endif 3038 #endif 3039 #ifdef ENABLE_BLE 3040 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3041 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3042 // lookup CIG 3043 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3044 if (cig != NULL){ 3045 uint8_t i = 0; 3046 if (status == ERROR_CODE_SUCCESS){ 3047 // assign CIS handles to pre-allocated CIS 3048 btstack_linked_list_iterator_t it; 3049 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3050 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3051 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3052 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3053 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3054 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3055 iso_stream->cis_handle = cis_handle; 3056 cig->cis_con_handles[i] = cis_handle; 3057 i++; 3058 } 3059 } 3060 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3061 hci_emit_cig_created(cig, status); 3062 } else { 3063 hci_emit_cig_created(cig, status); 3064 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3065 } 3066 } 3067 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3068 break; 3069 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3070 if (status != ERROR_CODE_SUCCESS){ 3071 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3072 } 3073 break; 3074 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3075 if (status != ERROR_CODE_SUCCESS){ 3076 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3077 } 3078 break; 3079 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3080 // lookup BIG by state 3081 btstack_linked_list_iterator_t it; 3082 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3083 while (btstack_linked_list_iterator_has_next(&it)) { 3084 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3085 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3086 if (status == ERROR_CODE_SUCCESS){ 3087 big->state_vars.next_bis++; 3088 if (big->state_vars.next_bis == big->num_bis){ 3089 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3090 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3091 } else { 3092 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3093 } 3094 } else { 3095 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3096 big->state_vars.status = status; 3097 } 3098 return; 3099 } 3100 } 3101 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3102 while (btstack_linked_list_iterator_has_next(&it)) { 3103 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3104 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3105 if (status == ERROR_CODE_SUCCESS){ 3106 big_sync->state_vars.next_bis++; 3107 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3108 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3109 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3110 } else { 3111 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3112 } 3113 } else { 3114 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3115 big_sync->state_vars.status = status; 3116 } 3117 return; 3118 } 3119 } 3120 // Lookup CIS via active group operation 3121 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3122 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3123 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3124 3125 // lookup CIS by state 3126 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3127 while (btstack_linked_list_iterator_has_next(&it)){ 3128 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3129 handle = iso_stream->cis_handle; 3130 bool emit_cis_created = false; 3131 switch (iso_stream->state){ 3132 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3133 if (status != ERROR_CODE_SUCCESS){ 3134 emit_cis_created = true; 3135 break; 3136 } 3137 if (iso_stream->max_sdu_c_to_p > 0){ 3138 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3139 } else { 3140 emit_cis_created = true; 3141 } 3142 break; 3143 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3144 emit_cis_created = true; 3145 break; 3146 default: 3147 break; 3148 } 3149 if (emit_cis_created){ 3150 hci_cis_handle_created(iso_stream, status); 3151 } 3152 } 3153 } else { 3154 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3155 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3156 if (cig != NULL) { 3157 // emit cis created if all ISO Paths have been created 3158 // assume we are central 3159 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3160 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3161 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3162 // if outgoing has been setup, or incoming was setup but outgoing not required 3163 if ((cis_direction == 1) || (outgoing_needed == false)){ 3164 // lookup iso stream by cig/cis 3165 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3166 while (btstack_linked_list_iterator_has_next(&it)) { 3167 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3168 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3169 hci_cis_handle_created(iso_stream, status); 3170 } 3171 } 3172 } 3173 // next state 3174 cig->state_vars.next_cis++; 3175 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3176 } 3177 } 3178 } 3179 break; 3180 } 3181 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3182 // lookup BIG by state 3183 btstack_linked_list_iterator_t it; 3184 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3185 while (btstack_linked_list_iterator_has_next(&it)) { 3186 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3187 uint8_t big_handle = big_sync->big_handle; 3188 switch (big_sync->state){ 3189 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3190 btstack_linked_list_iterator_remove(&it); 3191 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3192 return; 3193 default: 3194 btstack_linked_list_iterator_remove(&it); 3195 hci_emit_big_sync_stopped(big_handle); 3196 return; 3197 } 3198 } 3199 break; 3200 } 3201 #endif 3202 #endif 3203 default: 3204 break; 3205 } 3206 } 3207 3208 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3209 UNUSED(size); 3210 3211 // get num cmd packets - limit to 1 to reduce complexity 3212 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3213 3214 // get opcode and command status 3215 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3216 3217 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3218 uint8_t status = hci_event_command_status_get_status(packet); 3219 #endif 3220 3221 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3222 bd_addr_type_t addr_type; 3223 bd_addr_t addr; 3224 #endif 3225 3226 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3227 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3228 #endif 3229 3230 switch (opcode){ 3231 #ifdef ENABLE_CLASSIC 3232 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3233 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3234 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3235 #endif 3236 #ifdef ENABLE_LE_CENTRAL 3237 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3238 #endif 3239 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3240 addr_type = hci_stack->outgoing_addr_type; 3241 memcpy(addr, hci_stack->outgoing_addr, 6); 3242 3243 // reset outgoing address info 3244 memset(hci_stack->outgoing_addr, 0, 6); 3245 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3246 3247 // on error 3248 if (status != ERROR_CODE_SUCCESS){ 3249 #ifdef ENABLE_LE_CENTRAL 3250 if (hci_is_le_connection_type(addr_type)){ 3251 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3252 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3253 } 3254 #endif 3255 // error => outgoing connection failed 3256 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3257 if (conn != NULL){ 3258 hci_handle_connection_failed(conn, status); 3259 } 3260 } 3261 break; 3262 #endif 3263 #ifdef ENABLE_CLASSIC 3264 case HCI_OPCODE_HCI_INQUIRY: 3265 if (status == ERROR_CODE_SUCCESS) { 3266 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3267 } else { 3268 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3269 } 3270 break; 3271 #endif 3272 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3273 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3274 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3275 if (status == ERROR_CODE_SUCCESS){ 3276 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3277 } else { 3278 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3279 } 3280 break; 3281 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3282 default: 3283 break; 3284 } 3285 } 3286 3287 #ifdef ENABLE_BLE 3288 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3289 gap_event[0] = HCI_EVENT_META_GAP; 3290 gap_event[1] = 36 - 2; 3291 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3292 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3293 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3294 memcpy(&gap_event[3], &hci_event[3], 11); 3295 memset(&gap_event[14], 0, 12); 3296 memcpy(&gap_event[26], &hci_event[14], 7); 3297 memset(&gap_event[33], 0xff, 3); 3298 break; 3299 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3300 memcpy(&gap_event[3], &hci_event[3], 30); 3301 memset(&gap_event[33], 0xff, 3); 3302 break; 3303 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3304 memcpy(&gap_event[3], &hci_event[3], 33); 3305 break; 3306 default: 3307 btstack_unreachable(); 3308 break; 3309 } 3310 } 3311 3312 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3313 bd_addr_t addr; 3314 bd_addr_type_t addr_type; 3315 hci_connection_t * conn; 3316 3317 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3318 uint8_t gap_event[36]; 3319 hci_create_gap_connection_complete_event(hci_event, gap_event); 3320 3321 // read fields 3322 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3323 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3324 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3325 3326 // Connection management 3327 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3328 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3329 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3330 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3331 3332 #ifdef ENABLE_LE_CENTRAL 3333 // handle error: error is reported only to the initiator -> outgoing connection 3334 if (status){ 3335 3336 // handle cancelled outgoing connection 3337 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3338 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3339 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3340 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3341 // reset state 3342 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3343 // get outgoing connection conn struct for direct connect 3344 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3345 conn = gap_get_outgoing_le_connection(); 3346 conn->state = SEND_CREATE_CONNECTION; 3347 } 3348 } 3349 3350 // free connection if cancelled by user (request == IDLE) 3351 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 3352 // remove entry 3353 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3354 btstack_memory_hci_connection_free( conn ); 3355 } 3356 return; 3357 } 3358 #endif 3359 3360 // on success, both hosts receive connection complete event 3361 if (role == HCI_ROLE_MASTER){ 3362 #ifdef ENABLE_LE_CENTRAL 3363 // if we're master, it was an outgoing connection 3364 // note: no hci_connection_t object exists yet for connect with whitelist 3365 3366 // if a identity addresses was used without enhanced connection complete event, 3367 // the connection complete event contains the current random address of the peer device. 3368 // This random address is needed in the case of a re-pairing 3369 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3370 conn = gap_get_outgoing_le_connection(); 3371 // if outgoing connection object is available, check if identity address was used. 3372 // if yes, track resolved random address and provide rpa 3373 // note: we don't update hci le subevent connection complete 3374 if (conn != NULL){ 3375 if (hci_is_le_identity_address_type(conn->address_type)){ 3376 memcpy(&gap_event[20], &gap_event[8], 6); 3377 gap_event[7] = conn->address_type; 3378 reverse_bd_addr(conn->address, &gap_event[8]); 3379 } 3380 } 3381 } 3382 3383 // we're done with it 3384 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3385 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3386 #endif 3387 } else { 3388 #ifdef ENABLE_LE_PERIPHERAL 3389 // if we're slave, it was an incoming connection, advertisements have stopped 3390 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3391 #endif 3392 } 3393 3394 // LE connections are auto-accepted, so just create a connection if there isn't one already 3395 if (!conn){ 3396 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3397 } 3398 3399 // no memory, sorry. 3400 if (!conn){ 3401 return; 3402 } 3403 3404 conn->state = OPEN; 3405 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3406 conn->le_connection_interval = conn_interval; 3407 3408 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3409 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3410 3411 #ifdef ENABLE_LE_PERIPHERAL 3412 if (role == HCI_ROLE_SLAVE){ 3413 hci_update_advertisements_enabled_for_current_roles(); 3414 } 3415 #endif 3416 3417 // init unenhanced att bearer mtu 3418 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3419 conn->att_connection.mtu_exchanged = false; 3420 3421 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3422 3423 // restart timer 3424 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3425 // btstack_run_loop_add_timer(&conn->timeout); 3426 3427 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3428 3429 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3430 hci_emit_event(gap_event, sizeof(gap_event), 1); 3431 3432 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3433 hci_emit_nr_connections_changed(); 3434 } 3435 #endif 3436 3437 #ifdef ENABLE_CLASSIC 3438 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){ 3439 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3440 // LEVEL_4 is tested by l2cap 3441 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3442 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3443 if (level >= LEVEL_3){ 3444 // MITM not possible without keyboard or display 3445 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3446 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3447 3448 // MITM possible if one side has keyboard and the other has keyboard or display 3449 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3450 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3451 3452 // MITM not possible if one side has only display and other side has no keyboard 3453 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3454 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3455 } 3456 // LEVEL 2 requires SSP, which is a given 3457 return true; 3458 } 3459 3460 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3461 // get requested security level 3462 gap_security_level_t requested_security_level = conn->requested_security_level; 3463 if (hci_stack->gap_secure_connections_only_mode){ 3464 requested_security_level = LEVEL_4; 3465 } 3466 3467 // assess security: LEVEL 4 requires SC 3468 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3469 if ((requested_security_level == LEVEL_4) && 3470 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3471 !hci_remote_sc_enabled(conn)){ 3472 log_info("Level 4 required, but SC not supported -> abort"); 3473 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3474 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3475 return; 3476 } 3477 3478 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3479 // - GAP/MOD/NBON/BV-02-C 3480 // - GAP/DM/NBON/BV-01-C 3481 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3482 switch (conn->io_cap_response_auth_req){ 3483 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3484 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3485 if (hci_stack->bondable == false){ 3486 log_info("Dedicated vs. non-bondable -> abort"); 3487 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3488 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3489 return; 3490 } 3491 default: 3492 break; 3493 } 3494 } 3495 3496 // assess security based on io capabilities 3497 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3498 // responder: fully validate io caps of both sides as well as OOB data 3499 bool security_possible = false; 3500 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3501 3502 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3503 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3504 // so we merge the OOB data availability 3505 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3506 if (conn->classic_oob_c_192 != NULL){ 3507 have_oob_data |= 1; 3508 } 3509 if (conn->classic_oob_c_256 != NULL){ 3510 have_oob_data |= 2; 3511 } 3512 // for up to Level 3, either P-192 as well as P-256 will do 3513 // 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 3514 // if remote does not SC, we should not receive P-256 data either 3515 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3516 security_possible = true; 3517 } 3518 // for Level 4, P-256 is needed 3519 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3520 security_possible = true; 3521 } 3522 #endif 3523 3524 if (security_possible == false){ 3525 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3526 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3527 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3528 return; 3529 } 3530 } else { 3531 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3532 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3533 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3534 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3535 log_info("Level 3+ required, but no input/output -> abort"); 3536 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3537 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3538 return; 3539 } 3540 #endif 3541 #endif 3542 } 3543 3544 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3545 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3546 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3547 } else { 3548 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3549 } 3550 #endif 3551 } 3552 3553 #endif 3554 3555 static void event_handler(uint8_t *packet, uint16_t size){ 3556 3557 uint16_t event_length = packet[1]; 3558 3559 // assert packet is complete 3560 if (size != (event_length + 2u)){ 3561 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3562 return; 3563 } 3564 3565 hci_con_handle_t handle; 3566 hci_connection_t * conn; 3567 int i; 3568 3569 #ifdef ENABLE_CLASSIC 3570 hci_link_type_t link_type; 3571 bd_addr_t addr; 3572 bd_addr_type_t addr_type; 3573 #endif 3574 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3575 hci_iso_stream_t * iso_stream; 3576 le_audio_big_t * big; 3577 le_audio_big_sync_t * big_sync; 3578 #endif 3579 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3580 btstack_linked_list_iterator_t it; 3581 #endif 3582 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3583 uint8_t advertising_handle; 3584 #endif 3585 3586 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3587 3588 switch (hci_event_packet_get_type(packet)) { 3589 3590 case HCI_EVENT_COMMAND_COMPLETE: 3591 handle_command_complete_event(packet, size); 3592 break; 3593 3594 case HCI_EVENT_COMMAND_STATUS: 3595 handle_command_status_event(packet, size); 3596 break; 3597 3598 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3599 if (size < 3) return; 3600 uint16_t num_handles = packet[2]; 3601 if (size != (3u + num_handles * 4u)) return; 3602 #ifdef ENABLE_CLASSIC 3603 bool notify_sco = false; 3604 #endif 3605 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3606 bool notify_iso = false; 3607 #endif 3608 uint16_t offset = 3; 3609 for (i=0; i<num_handles;i++){ 3610 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3611 offset += 2u; 3612 uint16_t num_packets = little_endian_read_16(packet, offset); 3613 offset += 2u; 3614 3615 conn = hci_connection_for_handle(handle); 3616 if (conn != NULL) { 3617 3618 if (conn->num_packets_sent >= num_packets) { 3619 conn->num_packets_sent -= num_packets; 3620 } else { 3621 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3622 conn->num_packets_sent = 0; 3623 } 3624 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3625 #ifdef ENABLE_CLASSIC 3626 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3627 notify_sco = true; 3628 } 3629 #endif 3630 } 3631 3632 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3633 hci_controller_dump_packets(); 3634 #endif 3635 3636 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3637 if (conn == NULL){ 3638 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3639 if (iso_stream != NULL){ 3640 if (iso_stream->num_packets_sent >= num_packets) { 3641 iso_stream->num_packets_sent -= num_packets; 3642 } else { 3643 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3644 iso_stream->num_packets_sent = 0; 3645 } 3646 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3647 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3648 if (big != NULL){ 3649 big->num_completed_timestamp_current_valid = true; 3650 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3651 } 3652 } 3653 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3654 num_packets, handle, iso_stream->num_packets_sent); 3655 notify_iso = true; 3656 } 3657 } 3658 #endif 3659 } 3660 3661 #ifdef ENABLE_CLASSIC 3662 if (notify_sco){ 3663 hci_notify_if_sco_can_send_now(); 3664 } 3665 #endif 3666 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3667 if (notify_iso){ 3668 hci_iso_notify_can_send_now(); 3669 } 3670 #endif 3671 break; 3672 } 3673 3674 #ifdef ENABLE_CLASSIC 3675 case HCI_EVENT_FLUSH_OCCURRED: 3676 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3677 handle = hci_event_flush_occurred_get_handle(packet); 3678 conn = hci_connection_for_handle(handle); 3679 if (conn) { 3680 log_info("Flush occurred, disconnect 0x%04x", handle); 3681 conn->state = SEND_DISCONNECT; 3682 } 3683 break; 3684 3685 case HCI_EVENT_INQUIRY_COMPLETE: 3686 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3687 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3688 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3689 hci_emit_event(event, sizeof(event), 1); 3690 } 3691 break; 3692 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3693 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3694 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3695 } 3696 break; 3697 case HCI_EVENT_CONNECTION_REQUEST: 3698 reverse_bd_addr(&packet[2], addr); 3699 link_type = (hci_link_type_t) packet[11]; 3700 3701 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3702 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3703 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3704 bd_addr_copy(hci_stack->decline_addr, addr); 3705 break; 3706 } 3707 3708 if (hci_stack->gap_classic_accept_callback != NULL){ 3709 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3710 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3711 bd_addr_copy(hci_stack->decline_addr, addr); 3712 break; 3713 } 3714 } 3715 3716 // TODO: eval COD 8-10 3717 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3718 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3719 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3720 if (!conn) { 3721 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3722 } 3723 if (!conn) { 3724 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3725 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3726 bd_addr_copy(hci_stack->decline_addr, addr); 3727 hci_run(); 3728 // avoid event to higher layer 3729 return; 3730 } 3731 conn->state = RECEIVED_CONNECTION_REQUEST; 3732 // store info about eSCO 3733 if (link_type == HCI_LINK_TYPE_ESCO){ 3734 conn->remote_supported_features[0] |= 1; 3735 } 3736 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3737 if (addr_type == BD_ADDR_TYPE_SCO){ 3738 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3739 // ACL exists unless fuzzing 3740 if (acl_conn != NULL) { 3741 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3742 } 3743 } 3744 hci_run(); 3745 break; 3746 3747 case HCI_EVENT_CONNECTION_COMPLETE: 3748 // Connection management 3749 reverse_bd_addr(&packet[5], addr); 3750 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3751 addr_type = BD_ADDR_TYPE_ACL; 3752 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3753 if (conn) { 3754 switch (conn->state){ 3755 // expected states 3756 case ACCEPTED_CONNECTION_REQUEST: 3757 case SENT_CREATE_CONNECTION: 3758 break; 3759 // unexpected state -> ignore 3760 default: 3761 // don't forward event to app 3762 return; 3763 } 3764 if (!packet[2]){ 3765 conn->state = OPEN; 3766 conn->con_handle = little_endian_read_16(packet, 3); 3767 3768 // trigger write supervision timeout if we're master 3769 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3770 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3771 } 3772 3773 // trigger write automatic flush timeout 3774 if (hci_stack->automatic_flush_timeout != 0){ 3775 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3776 } 3777 3778 // restart timer 3779 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3780 btstack_run_loop_add_timer(&conn->timeout); 3781 3782 // trigger remote features for dedicated bonding 3783 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3784 hci_trigger_remote_features_for_connection(conn); 3785 } 3786 3787 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3788 3789 hci_emit_nr_connections_changed(); 3790 } else { 3791 // connection failed 3792 hci_handle_connection_failed(conn, packet[2]); 3793 } 3794 } 3795 break; 3796 3797 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3798 reverse_bd_addr(&packet[5], addr); 3799 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3800 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3801 3802 // SCO exists unless fuzzer 3803 if (conn == NULL) break; 3804 3805 if (packet[2] != ERROR_CODE_SUCCESS){ 3806 // connection failed, remove entry 3807 hci_handle_connection_failed(conn, packet[2]); 3808 break; 3809 } 3810 3811 conn->state = OPEN; 3812 conn->con_handle = little_endian_read_16(packet, 3); 3813 3814 // update sco payload length for eSCO connections 3815 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3816 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3817 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3818 } 3819 3820 #ifdef ENABLE_SCO_OVER_HCI 3821 // update SCO 3822 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3823 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3824 } 3825 // trigger can send now 3826 if (hci_have_usb_transport()){ 3827 hci_stack->sco_can_send_now = true; 3828 } 3829 3830 // setup implict sco flow control 3831 conn->sco_tx_ready = 0; 3832 conn->sco_tx_active = 0; 3833 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3834 3835 #endif 3836 #ifdef HAVE_SCO_TRANSPORT 3837 // configure sco transport 3838 if (hci_stack->sco_transport != NULL){ 3839 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3840 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3841 } 3842 #endif 3843 break; 3844 3845 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3846 handle = little_endian_read_16(packet, 3); 3847 conn = hci_connection_for_handle(handle); 3848 if (!conn) break; 3849 if (!packet[2]){ 3850 const uint8_t * features = &packet[5]; 3851 hci_handle_remote_features_page_0(conn, features); 3852 3853 // read extended features if possible 3854 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3855 && ((conn->remote_supported_features[0] & 2) != 0)) { 3856 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3857 break; 3858 } 3859 } 3860 hci_handle_remote_features_received(conn); 3861 break; 3862 3863 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3864 handle = little_endian_read_16(packet, 3); 3865 conn = hci_connection_for_handle(handle); 3866 if (!conn) break; 3867 // status = ok, page = 1 3868 if (!packet[2]) { 3869 uint8_t page_number = packet[5]; 3870 uint8_t maximum_page_number = packet[6]; 3871 const uint8_t * features = &packet[7]; 3872 bool done = false; 3873 switch (page_number){ 3874 case 1: 3875 hci_handle_remote_features_page_1(conn, features); 3876 if (maximum_page_number >= 2){ 3877 // get Secure Connections (Controller) from Page 2 if available 3878 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3879 } else { 3880 // otherwise, assume SC (Controller) == SC (Host) 3881 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3882 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3883 } 3884 done = true; 3885 } 3886 break; 3887 case 2: 3888 hci_handle_remote_features_page_2(conn, features); 3889 done = true; 3890 break; 3891 default: 3892 break; 3893 } 3894 if (!done) break; 3895 } 3896 hci_handle_remote_features_received(conn); 3897 break; 3898 3899 case HCI_EVENT_LINK_KEY_REQUEST: 3900 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3901 hci_event_link_key_request_get_bd_addr(packet, addr); 3902 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3903 if (!conn) break; 3904 3905 // lookup link key in db if not cached 3906 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3907 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3908 } 3909 3910 // response sent by hci_run() 3911 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3912 #endif 3913 break; 3914 3915 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3916 hci_event_link_key_request_get_bd_addr(packet, addr); 3917 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3918 if (!conn) break; 3919 3920 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3921 3922 // CVE-2020-26555: ignore NULL link key 3923 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3924 if (btstack_is_null(&packet[8], 16)) break; 3925 3926 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3927 // Change Connection Encryption keeps link key type 3928 if (link_key_type != CHANGED_COMBINATION_KEY){ 3929 conn->link_key_type = link_key_type; 3930 } 3931 3932 // cache link key. link keys stored in little-endian format for legacy reasons 3933 memcpy(&conn->link_key, &packet[8], 16); 3934 3935 // only store link key: 3936 // - if bondable enabled 3937 if (hci_stack->bondable == false) break; 3938 // - if security level sufficient 3939 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3940 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3941 break; 3942 } 3943 3944 case HCI_EVENT_PIN_CODE_REQUEST: 3945 hci_event_pin_code_request_get_bd_addr(packet, addr); 3946 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3947 if (!conn) break; 3948 3949 hci_pairing_started(conn, false); 3950 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3951 if (!hci_stack->bondable ){ 3952 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3953 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3954 hci_run(); 3955 return; 3956 } 3957 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3958 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3959 log_info("Level 4 required, but SC not supported -> abort"); 3960 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3961 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3962 hci_run(); 3963 return; 3964 } 3965 break; 3966 3967 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3968 hci_event_io_capability_response_get_bd_addr(packet, addr); 3969 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3970 if (!conn) break; 3971 3972 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3973 hci_pairing_started(conn, true); 3974 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3975 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3976 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3977 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3978 #endif 3979 break; 3980 3981 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3982 hci_event_io_capability_response_get_bd_addr(packet, addr); 3983 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3984 if (!conn) break; 3985 3986 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3987 hci_connection_timestamp(conn); 3988 hci_pairing_started(conn, true); 3989 break; 3990 3991 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3992 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3993 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3994 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3995 if (!conn) break; 3996 3997 hci_connection_timestamp(conn); 3998 3999 hci_pairing_started(conn, true); 4000 4001 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4002 break; 4003 #endif 4004 4005 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4006 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4007 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4008 if (!conn) break; 4009 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4010 if (hci_stack->ssp_auto_accept){ 4011 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4012 }; 4013 } else { 4014 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4015 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4016 // don't forward event to app 4017 hci_run(); 4018 return; 4019 } 4020 break; 4021 4022 case HCI_EVENT_USER_PASSKEY_REQUEST: 4023 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4024 if (hci_stack->ssp_auto_accept){ 4025 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4026 }; 4027 break; 4028 4029 case HCI_EVENT_MODE_CHANGE: 4030 handle = hci_event_mode_change_get_handle(packet); 4031 conn = hci_connection_for_handle(handle); 4032 if (!conn) break; 4033 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4034 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4035 break; 4036 #endif 4037 4038 case HCI_EVENT_ENCRYPTION_CHANGE: 4039 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4040 handle = hci_event_encryption_change_get_connection_handle(packet); 4041 conn = hci_connection_for_handle(handle); 4042 if (!conn) break; 4043 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4044 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4045 if (encryption_enabled){ 4046 if (hci_is_le_connection(conn)){ 4047 // For LE, we accept connection as encrypted 4048 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4049 } 4050 #ifdef ENABLE_CLASSIC 4051 else { 4052 4053 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4054 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4055 bool connected_uses_aes_ccm = encryption_enabled == 2; 4056 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4057 #ifdef ENABLE_TESTING_SUPPORT 4058 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4059 // - GAP/SEC/SEM/BI-31-C 4060 // - GAP/SEC/SEM/BI-32-C 4061 // - GAP/SEC/SEM/BI-33-C 4062 4063 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4064 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4065 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4066 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4067 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4068 } 4069 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4070 conn->link_key_type, new_link_key_type); 4071 conn->link_key_type = new_link_key_type; 4072 #else 4073 log_info("SC during pairing, but only E0 now -> abort"); 4074 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4075 break; 4076 #endif 4077 } 4078 4079 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4080 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4081 if (connected_uses_aes_ccm){ 4082 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4083 } 4084 #else 4085 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4086 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4087 // for all operations that require any security. See BIAS attacks. 4088 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4089 #endif 4090 // validate encryption key size 4091 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4092 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4093 // already got encryption key size 4094 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4095 } else { 4096 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4097 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4098 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4099 } else { 4100 // if not, pretend everything is perfect 4101 hci_handle_read_encryption_key_size_complete(conn, 16); 4102 } 4103 } 4104 } 4105 #endif 4106 } else { 4107 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4108 } 4109 } else { 4110 #ifdef ENABLE_CLASSIC 4111 if (!hci_is_le_connection(conn)){ 4112 uint8_t status = hci_event_encryption_change_get_status(packet); 4113 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4114 conn->bonding_flags &= ~BONDING_DEDICATED; 4115 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4116 conn->bonding_status = status; 4117 } 4118 // trigger security update -> level 0 4119 hci_handle_mutual_authentication_completed(conn); 4120 } 4121 #endif 4122 } 4123 4124 break; 4125 4126 #ifdef ENABLE_CLASSIC 4127 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4128 handle = hci_event_authentication_complete_get_connection_handle(packet); 4129 conn = hci_connection_for_handle(handle); 4130 if (!conn) break; 4131 4132 // clear authentication active flag 4133 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4134 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4135 4136 // authenticated only if auth status == 0 4137 if (hci_event_authentication_complete_get_status(packet) == 0){ 4138 // authenticated 4139 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4140 4141 // If not already encrypted, start encryption 4142 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4143 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4144 break; 4145 } 4146 } 4147 4148 // emit updated security level (will be 0 if not authenticated) 4149 hci_handle_mutual_authentication_completed(conn); 4150 break; 4151 4152 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4153 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4154 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4155 if (!conn) break; 4156 4157 // treat successfully paired connection as authenticated 4158 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4159 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4160 } 4161 4162 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4163 break; 4164 #endif 4165 4166 // HCI_EVENT_DISCONNECTION_COMPLETE 4167 // has been split, to first notify stack before shutting connection down 4168 // see end of function, too. 4169 case HCI_EVENT_DISCONNECTION_COMPLETE: 4170 if (packet[2]) break; // status != 0 4171 handle = little_endian_read_16(packet, 3); 4172 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4173 if (hci_stack->acl_fragmentation_total_size > 0u) { 4174 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4175 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4176 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4177 hci_stack->acl_fragmentation_total_size = 0; 4178 hci_stack->acl_fragmentation_pos = 0; 4179 if (release_buffer){ 4180 hci_release_packet_buffer(); 4181 } 4182 } 4183 } 4184 4185 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4186 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4187 if (hci_stack->iso_fragmentation_total_size > 0u) { 4188 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4189 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4190 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4191 hci_stack->iso_fragmentation_total_size = 0; 4192 hci_stack->iso_fragmentation_pos = 0; 4193 if (release_buffer){ 4194 hci_release_packet_buffer(); 4195 } 4196 } 4197 } 4198 4199 // finalize iso stream for CIS handle 4200 iso_stream = hci_iso_stream_for_con_handle(handle); 4201 if (iso_stream != NULL){ 4202 hci_iso_stream_finalize(iso_stream); 4203 break; 4204 } 4205 4206 // finalize iso stream(s) for ACL handle 4207 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4208 while (btstack_linked_list_iterator_has_next(&it)){ 4209 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4210 if (iso_stream->acl_handle == handle ) { 4211 hci_iso_stream_finalize(iso_stream); 4212 } 4213 } 4214 #endif 4215 4216 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4217 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4218 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4219 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4220 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4221 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4222 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4223 hci_stack->num_cmd_packets = 1; 4224 } 4225 #endif 4226 4227 conn = hci_connection_for_handle(handle); 4228 if (!conn) break; 4229 #ifdef ENABLE_CLASSIC 4230 // pairing failed if it was ongoing 4231 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4232 #endif 4233 4234 // emit dedicatd bonding event 4235 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4236 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4237 } 4238 4239 // mark connection for shutdown, stop timers, reset state 4240 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4241 hci_connection_stop_timer(conn); 4242 hci_connection_init(conn); 4243 4244 #ifdef ENABLE_BLE 4245 #ifdef ENABLE_LE_PERIPHERAL 4246 // re-enable advertisements for le connections if active 4247 if (hci_is_le_connection(conn)){ 4248 hci_update_advertisements_enabled_for_current_roles(); 4249 } 4250 #endif 4251 #endif 4252 break; 4253 4254 case HCI_EVENT_HARDWARE_ERROR: 4255 log_error("Hardware Error: 0x%02x", packet[2]); 4256 if (hci_stack->hardware_error_callback){ 4257 (*hci_stack->hardware_error_callback)(packet[2]); 4258 } else { 4259 // if no special requests, just reboot stack 4260 hci_power_control_off(); 4261 hci_power_control_on(); 4262 } 4263 break; 4264 4265 #ifdef ENABLE_CLASSIC 4266 case HCI_EVENT_ROLE_CHANGE: 4267 if (packet[2]) break; // status != 0 4268 reverse_bd_addr(&packet[3], addr); 4269 addr_type = BD_ADDR_TYPE_ACL; 4270 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4271 if (!conn) break; 4272 conn->role = (hci_role_t) packet[9]; 4273 break; 4274 #endif 4275 4276 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4277 // release packet buffer only for asynchronous transport and if there are not further fragments 4278 if (hci_transport_synchronous()) { 4279 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4280 return; // instead of break: to avoid re-entering hci_run() 4281 } 4282 hci_stack->acl_fragmentation_tx_active = 0; 4283 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4284 hci_stack->iso_fragmentation_tx_active = 0; 4285 if (hci_stack->iso_fragmentation_total_size) break; 4286 #endif 4287 if (hci_stack->acl_fragmentation_total_size) break; 4288 4289 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4290 btstack_assert(hci_stack->hci_packet_buffer_reserved); 4291 hci_stack->hci_packet_buffer_reserved = false; 4292 4293 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4294 hci_iso_notify_can_send_now(); 4295 #endif 4296 // L2CAP receives this event via the hci_emit_event below 4297 4298 #ifdef ENABLE_CLASSIC 4299 // For SCO, we do the can_send_now_check here 4300 hci_notify_if_sco_can_send_now(); 4301 #endif 4302 break; 4303 4304 #ifdef ENABLE_CLASSIC 4305 case HCI_EVENT_SCO_CAN_SEND_NOW: 4306 // For SCO, we do the can_send_now_check here 4307 hci_stack->sco_can_send_now = true; 4308 hci_notify_if_sco_can_send_now(); 4309 return; 4310 4311 // explode inquriy results for easier consumption 4312 case HCI_EVENT_INQUIRY_RESULT: 4313 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4314 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4315 gap_inquiry_explode(packet, size); 4316 break; 4317 #endif 4318 4319 #ifdef ENABLE_BLE 4320 case HCI_EVENT_LE_META: 4321 switch (packet[2]){ 4322 #ifdef ENABLE_LE_CENTRAL 4323 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4324 if (!hci_stack->le_scanning_enabled) break; 4325 le_handle_advertisement_report(packet, size); 4326 break; 4327 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4328 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4329 if (!hci_stack->le_scanning_enabled) break; 4330 le_handle_extended_advertisement_report(packet, size); 4331 break; 4332 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4333 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4334 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4335 break; 4336 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4337 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4338 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4339 while (btstack_linked_list_iterator_has_next(&it)) { 4340 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4341 if (advertising_set->advertising_handle == advertising_handle){ 4342 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4343 } 4344 } 4345 break; 4346 #endif 4347 #endif 4348 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4349 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4350 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4351 hci_handle_le_connection_complete_event(packet); 4352 break; 4353 4354 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4355 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4356 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4357 conn = hci_connection_for_handle(handle); 4358 if (!conn) break; 4359 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4360 break; 4361 4362 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4363 // connection 4364 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4365 conn = hci_connection_for_handle(handle); 4366 if (conn) { 4367 // read arguments 4368 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4369 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4370 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4371 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4372 4373 // validate against current connection parameter range 4374 le_connection_parameter_range_t existing_range; 4375 gap_get_connection_parameter_range(&existing_range); 4376 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4377 if (update_parameter){ 4378 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4379 conn->le_conn_interval_min = le_conn_interval_min; 4380 conn->le_conn_interval_max = le_conn_interval_max; 4381 conn->le_conn_latency = le_conn_latency; 4382 conn->le_supervision_timeout = le_supervision_timeout; 4383 } else { 4384 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4385 } 4386 } 4387 break; 4388 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4389 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4390 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4391 conn = hci_connection_for_handle(handle); 4392 if (conn) { 4393 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4394 } 4395 break; 4396 #endif 4397 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4398 case HCI_SUBEVENT_LE_CIS_REQUEST: 4399 // incoming CIS request, allocate iso stream object and cache metadata 4400 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4401 hci_subevent_le_cis_request_get_cig_id(packet), 4402 hci_subevent_le_cis_request_get_cis_id(packet)); 4403 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4404 if (iso_stream != NULL){ 4405 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4406 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4407 } 4408 break; 4409 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4410 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4411 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4412 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4413 iso_stream = hci_iso_stream_for_con_handle(handle); 4414 btstack_assert(iso_stream != NULL); 4415 // track connection info 4416 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4417 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4418 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4419 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4420 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4421 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4422 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4423 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4424 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4425 // CIS Accept by Peripheral 4426 if (status == ERROR_CODE_SUCCESS){ 4427 if (iso_stream->max_sdu_p_to_c > 0){ 4428 // we're peripheral and we will send data 4429 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4430 } else { 4431 // we're peripheral and we will only receive data 4432 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4433 } 4434 } else { 4435 hci_cis_handle_created(iso_stream, status); 4436 } 4437 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4438 } else { 4439 // CIG Setup by Central 4440 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4441 btstack_assert(cig != NULL); 4442 // update iso stream state 4443 if (status == ERROR_CODE_SUCCESS){ 4444 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4445 } else { 4446 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4447 } 4448 // update cig state 4449 uint8_t i; 4450 for (i=0;i<cig->num_cis;i++){ 4451 if (cig->cis_con_handles[i] == handle){ 4452 cig->cis_setup_active[i] = false; 4453 if (status == ERROR_CODE_SUCCESS){ 4454 cig->cis_established[i] = true; 4455 } else { 4456 hci_cis_handle_created(iso_stream, status); 4457 } 4458 } 4459 } 4460 4461 // trigger iso path setup if complete 4462 bool cis_setup_active = false; 4463 for (i=0;i<cig->num_cis;i++){ 4464 cis_setup_active |= cig->cis_setup_active[i]; 4465 } 4466 if (cis_setup_active == false){ 4467 cig->state_vars.next_cis = 0; 4468 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4469 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4470 } 4471 } 4472 } 4473 break; 4474 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4475 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4476 big = hci_big_for_handle(packet[4]); 4477 if (big != NULL){ 4478 uint8_t status = packet[3]; 4479 if (status == ERROR_CODE_SUCCESS){ 4480 // store bis_con_handles and trigger iso path setup 4481 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4482 uint8_t i; 4483 for (i=0;i<num_bis;i++){ 4484 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4485 big->bis_con_handles[i] = bis_handle; 4486 // assign bis handle 4487 btstack_linked_list_iterator_t it; 4488 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4489 while (btstack_linked_list_iterator_has_next(&it)){ 4490 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4491 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4492 (iso_stream->group_id == big->big_handle)){ 4493 iso_stream->cis_handle = bis_handle; 4494 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4495 break; 4496 } 4497 } 4498 } 4499 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4500 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4501 big->state_vars.next_bis = 0; 4502 } 4503 } else { 4504 // create BIG failed or has been stopped by us 4505 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4506 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4507 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4508 hci_emit_big_created(big, status); 4509 } else { 4510 hci_emit_big_terminated(big); 4511 } 4512 } 4513 } 4514 break; 4515 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4516 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4517 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4518 if (big != NULL){ 4519 // finalize associated ISO streams 4520 btstack_linked_list_iterator_t it; 4521 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4522 while (btstack_linked_list_iterator_has_next(&it)){ 4523 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4524 if (iso_stream->group_id == big->big_handle){ 4525 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4526 btstack_linked_list_iterator_remove(&it); 4527 btstack_memory_hci_iso_stream_free(iso_stream); 4528 } 4529 } 4530 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4531 switch (big->state){ 4532 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4533 hci_emit_big_created(big, big->state_vars.status); 4534 break; 4535 default: 4536 hci_emit_big_terminated(big); 4537 break; 4538 } 4539 } 4540 break; 4541 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4542 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4543 big_sync = hci_big_sync_for_handle(packet[4]); 4544 if (big_sync != NULL){ 4545 uint8_t status = packet[3]; 4546 uint8_t big_handle = packet[4]; 4547 if (status == ERROR_CODE_SUCCESS){ 4548 // store bis_con_handles and trigger iso path setup 4549 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4550 uint8_t i; 4551 for (i=0;i<num_bis;i++){ 4552 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4553 big_sync->bis_con_handles[i] = bis_handle; 4554 // setup iso_stream_t 4555 btstack_linked_list_iterator_t it; 4556 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4557 while (btstack_linked_list_iterator_has_next(&it)){ 4558 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4559 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4560 (iso_stream->group_id == big_sync->big_handle)){ 4561 iso_stream->cis_handle = bis_handle; 4562 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4563 break; 4564 } 4565 } 4566 } 4567 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4568 // trigger iso path setup 4569 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4570 big_sync->state_vars.next_bis = 0; 4571 } 4572 } else { 4573 // create BIG Sync failed or has been stopped by us 4574 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4575 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4576 hci_emit_big_sync_created(big_sync, status); 4577 } else { 4578 hci_emit_big_sync_stopped(big_handle); 4579 } 4580 } 4581 } 4582 break; 4583 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4584 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4585 big_sync = hci_big_sync_for_handle(packet[4]); 4586 if (big_sync != NULL){ 4587 uint8_t big_handle = packet[4]; 4588 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4589 hci_emit_big_sync_stopped(big_handle); 4590 } 4591 break; 4592 #endif 4593 default: 4594 break; 4595 } 4596 break; 4597 #endif 4598 case HCI_EVENT_VENDOR_SPECIFIC: 4599 // Vendor specific commands often create vendor specific event instead of num completed packets 4600 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4601 switch (hci_stack->manufacturer){ 4602 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4603 hci_stack->num_cmd_packets = 1; 4604 break; 4605 default: 4606 break; 4607 } 4608 break; 4609 default: 4610 break; 4611 } 4612 4613 handle_event_for_current_stack_state(packet, size); 4614 4615 // notify upper stack 4616 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4617 4618 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4619 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4620 handle = little_endian_read_16(packet, 3); 4621 hci_connection_t * aConn = hci_connection_for_handle(handle); 4622 // discard connection if app did not trigger a reconnect in the event handler 4623 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4624 hci_shutdown_connection(aConn); 4625 } 4626 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4627 hci_controller_dump_packets(); 4628 #endif 4629 } 4630 4631 // execute main loop 4632 hci_run(); 4633 } 4634 4635 #ifdef ENABLE_CLASSIC 4636 4637 static void sco_handler(uint8_t * packet, uint16_t size){ 4638 // lookup connection struct 4639 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4640 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4641 if (!conn) return; 4642 4643 #ifdef ENABLE_SCO_OVER_HCI 4644 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4645 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4646 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4647 packet[2] = 0x3c; 4648 memmove(&packet[3], &packet[23], 63); 4649 size = 63; 4650 } 4651 } 4652 4653 if (hci_have_usb_transport()){ 4654 // Nothing to do 4655 } else { 4656 // 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); 4657 if (hci_stack->synchronous_flow_control_enabled == 0){ 4658 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4659 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4660 if (conn->sco_tx_active == 0){ 4661 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4662 conn->sco_tx_active = 1; 4663 conn->sco_tx_ready = max_sco_packets; 4664 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4665 hci_notify_if_sco_can_send_now(); 4666 } 4667 } else { 4668 if (conn->sco_tx_ready < max_sco_packets){ 4669 conn->sco_tx_ready++; 4670 } 4671 hci_notify_if_sco_can_send_now(); 4672 } 4673 } 4674 } 4675 #endif 4676 4677 // deliver to app 4678 if (hci_stack->sco_packet_handler) { 4679 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4680 } 4681 4682 #ifdef HAVE_SCO_TRANSPORT 4683 // We can send one packet for each received packet 4684 conn->sco_tx_ready++; 4685 hci_notify_if_sco_can_send_now(); 4686 #endif 4687 4688 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4689 conn->num_packets_completed++; 4690 hci_stack->host_completed_packets = 1; 4691 hci_run(); 4692 #endif 4693 } 4694 #endif 4695 4696 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4697 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4698 // propagate ISO packets received as ACL 4699 hci_iso_stream_t * iso_stream = NULL; 4700 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4701 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4702 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4703 if (iso_stream != NULL){ 4704 packet_type = HCI_ISO_DATA_PACKET; 4705 } 4706 } 4707 #endif 4708 4709 hci_dump_packet(packet_type, 1, packet, size); 4710 switch (packet_type) { 4711 case HCI_EVENT_PACKET: 4712 event_handler(packet, size); 4713 break; 4714 case HCI_ACL_DATA_PACKET: 4715 acl_handler(packet, size); 4716 break; 4717 #ifdef ENABLE_CLASSIC 4718 case HCI_SCO_DATA_PACKET: 4719 sco_handler(packet, size); 4720 break; 4721 #endif 4722 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4723 case HCI_ISO_DATA_PACKET: 4724 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4725 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4726 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4727 } 4728 hci_iso_packet_handler(iso_stream, packet, size); 4729 break; 4730 #endif 4731 default: 4732 break; 4733 } 4734 } 4735 4736 /** 4737 * @brief Add event packet handler. 4738 */ 4739 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4740 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4741 } 4742 4743 /** 4744 * @brief Remove event packet handler. 4745 */ 4746 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4747 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4748 } 4749 4750 /** Register HCI packet handlers */ 4751 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4752 hci_stack->acl_packet_handler = handler; 4753 } 4754 4755 #ifdef ENABLE_CLASSIC 4756 /** 4757 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4758 */ 4759 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4760 hci_stack->sco_packet_handler = handler; 4761 } 4762 #endif 4763 4764 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4765 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4766 hci_stack->iso_packet_handler = handler; 4767 } 4768 #endif 4769 4770 static void hci_state_reset(void){ 4771 // no connections yet 4772 hci_stack->connections = NULL; 4773 4774 // keep discoverable/connectable as this has been requested by the client(s) 4775 // hci_stack->discoverable = 0; 4776 // hci_stack->connectable = 0; 4777 // hci_stack->bondable = 1; 4778 // hci_stack->own_addr_type = 0; 4779 4780 // buffer is free 4781 hci_stack->hci_packet_buffer_reserved = false; 4782 4783 // no pending cmds 4784 hci_stack->decline_reason = 0; 4785 4786 hci_stack->secure_connections_active = false; 4787 4788 #ifdef ENABLE_CLASSIC 4789 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4790 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4791 4792 hci_stack->gap_tasks_classic = 4793 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4794 GAP_TASK_SET_CLASS_OF_DEVICE | 4795 GAP_TASK_SET_LOCAL_NAME | 4796 GAP_TASK_SET_EIR_DATA | 4797 GAP_TASK_WRITE_SCAN_ENABLE | 4798 GAP_TASK_WRITE_PAGE_TIMEOUT; 4799 #endif 4800 4801 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4802 hci_stack->classic_read_local_oob_data = false; 4803 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4804 #endif 4805 4806 // LE 4807 #ifdef ENABLE_BLE 4808 memset(hci_stack->le_random_address, 0, 6); 4809 hci_stack->le_random_address_set = 0; 4810 #endif 4811 #ifdef ENABLE_LE_CENTRAL 4812 hci_stack->le_scanning_active = false; 4813 hci_stack->le_scanning_param_update = true; 4814 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4815 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4816 hci_stack->le_whitelist_capacity = 0; 4817 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4818 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4819 #endif 4820 #endif 4821 #ifdef ENABLE_LE_PERIPHERAL 4822 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4823 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4824 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4825 } 4826 if (hci_stack->le_advertisements_data != NULL){ 4827 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4828 } 4829 #endif 4830 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4831 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4832 #endif 4833 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4834 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4835 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4836 #endif 4837 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4838 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4839 #endif 4840 } 4841 4842 #ifdef ENABLE_CLASSIC 4843 /** 4844 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4845 */ 4846 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4847 // store and open remote device db 4848 hci_stack->link_key_db = link_key_db; 4849 if (hci_stack->link_key_db) { 4850 hci_stack->link_key_db->open(); 4851 } 4852 } 4853 #endif 4854 4855 void hci_init(const hci_transport_t *transport, const void *config){ 4856 4857 #ifdef HAVE_MALLOC 4858 if (!hci_stack) { 4859 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4860 } 4861 #else 4862 hci_stack = &hci_stack_static; 4863 #endif 4864 memset(hci_stack, 0, sizeof(hci_stack_t)); 4865 4866 // reference to use transport layer implementation 4867 hci_stack->hci_transport = transport; 4868 4869 // reference to used config 4870 hci_stack->config = config; 4871 4872 // setup pointer for outgoing packet buffer 4873 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4874 4875 // max acl payload size defined in config.h 4876 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4877 4878 // register packet handlers with transport 4879 transport->register_packet_handler(&packet_handler); 4880 4881 hci_stack->state = HCI_STATE_OFF; 4882 4883 // class of device 4884 hci_stack->class_of_device = 0x007a020c; // Smartphone 4885 4886 // bondable by default 4887 hci_stack->bondable = 1; 4888 4889 #ifdef ENABLE_CLASSIC 4890 // classic name 4891 hci_stack->local_name = default_classic_name; 4892 4893 // Master slave policy 4894 hci_stack->master_slave_policy = 1; 4895 4896 // Allow Role Switch 4897 hci_stack->allow_role_switch = 1; 4898 4899 // Default / minimum security level = 2 4900 hci_stack->gap_security_level = LEVEL_2; 4901 4902 // Default Security Mode 4 4903 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4904 4905 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4906 hci_stack->gap_required_encyrption_key_size = 7; 4907 4908 // Link Supervision Timeout 4909 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4910 4911 // All ACL packet types are enabledh 4912 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4913 #endif 4914 4915 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4916 hci_stack->ssp_enable = 1; 4917 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4918 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4919 hci_stack->ssp_auto_accept = 1; 4920 4921 // Secure Connections: enable (requires support from Controller) 4922 hci_stack->secure_connections_enable = true; 4923 4924 // voice setting - signed 16 bit pcm data with CVSD over the air 4925 hci_stack->sco_voice_setting = 0x60; 4926 4927 #ifdef ENABLE_BLE 4928 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4929 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4930 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4931 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4932 hci_stack->le_connection_latency = 4; // 4 4933 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4934 hci_stack->le_minimum_ce_length = 0; // 0 ms 4935 hci_stack->le_maximum_ce_length = 0; // 0 ms 4936 #endif 4937 4938 #ifdef ENABLE_LE_CENTRAL 4939 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4940 4941 // default LE Scanning 4942 hci_stack->le_scan_type = 0x01; // active 4943 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4944 hci_stack->le_scan_window = 0x30; // 30 ms 4945 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4946 #endif 4947 4948 #ifdef ENABLE_LE_PERIPHERAL 4949 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4950 4951 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4952 hci_stack->le_advertisements_interval_min = 0x0800; 4953 hci_stack->le_advertisements_interval_max = 0x0800; 4954 hci_stack->le_advertisements_type = 0; 4955 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4956 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4957 hci_stack->le_advertisements_channel_map = 0x07; 4958 hci_stack->le_advertisements_filter_policy = 0; 4959 #endif 4960 4961 // connection parameter range used to answer connection parameter update requests in l2cap 4962 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4963 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4964 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4965 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4966 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4967 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4968 4969 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4970 hci_stack->iso_packets_to_queue = 1; 4971 #endif 4972 4973 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4974 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4975 #endif 4976 4977 hci_state_reset(); 4978 } 4979 4980 void hci_deinit(void){ 4981 btstack_run_loop_remove_timer(&hci_stack->timeout); 4982 #ifdef HAVE_MALLOC 4983 if (hci_stack) { 4984 free(hci_stack); 4985 } 4986 #endif 4987 hci_stack = NULL; 4988 4989 #ifdef ENABLE_CLASSIC 4990 disable_l2cap_timeouts = 0; 4991 #endif 4992 } 4993 4994 /** 4995 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4996 */ 4997 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4998 hci_stack->chipset = chipset_driver; 4999 5000 // reset chipset driver - init is also called on power_up 5001 if (hci_stack->chipset && hci_stack->chipset->init){ 5002 hci_stack->chipset->init(hci_stack->config); 5003 } 5004 } 5005 5006 void hci_enable_custom_pre_init(void){ 5007 hci_stack->chipset_pre_init = true; 5008 } 5009 5010 /** 5011 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5012 */ 5013 void hci_set_control(const btstack_control_t *hardware_control){ 5014 // references to used control implementation 5015 hci_stack->control = hardware_control; 5016 // init with transport config 5017 hardware_control->init(hci_stack->config); 5018 } 5019 5020 static void hci_discard_connections(void){ 5021 btstack_linked_list_iterator_t it; 5022 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5023 while (btstack_linked_list_iterator_has_next(&it)){ 5024 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5025 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5026 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5027 hci_shutdown_connection(connection); 5028 } 5029 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5030 while (hci_stack->iso_streams != NULL){ 5031 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5032 } 5033 #endif 5034 } 5035 5036 void hci_close(void){ 5037 5038 #ifdef ENABLE_CLASSIC 5039 // close remote device db 5040 if (hci_stack->link_key_db) { 5041 hci_stack->link_key_db->close(); 5042 } 5043 #endif 5044 5045 hci_discard_connections(); 5046 5047 hci_power_control(HCI_POWER_OFF); 5048 5049 #ifdef HAVE_MALLOC 5050 free(hci_stack); 5051 #endif 5052 hci_stack = NULL; 5053 } 5054 5055 #ifdef HAVE_SCO_TRANSPORT 5056 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5057 hci_stack->sco_transport = sco_transport; 5058 sco_transport->register_packet_handler(&packet_handler); 5059 } 5060 #endif 5061 5062 #ifdef ENABLE_CLASSIC 5063 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5064 // validate ranage and set 5065 if (encryption_key_size < 7) return; 5066 if (encryption_key_size > 16) return; 5067 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5068 } 5069 5070 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5071 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5072 hci_stack->gap_security_mode = security_mode; 5073 return ERROR_CODE_SUCCESS; 5074 } else { 5075 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5076 } 5077 } 5078 5079 gap_security_mode_t gap_get_security_mode(void){ 5080 return hci_stack->gap_security_mode; 5081 } 5082 5083 void gap_set_security_level(gap_security_level_t security_level){ 5084 hci_stack->gap_security_level = security_level; 5085 } 5086 5087 gap_security_level_t gap_get_security_level(void){ 5088 if (hci_stack->gap_secure_connections_only_mode){ 5089 return LEVEL_4; 5090 } 5091 return hci_stack->gap_security_level; 5092 } 5093 5094 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5095 hci_stack->gap_minimal_service_security_level = security_level; 5096 } 5097 5098 void gap_set_secure_connections_only_mode(bool enable){ 5099 hci_stack->gap_secure_connections_only_mode = enable; 5100 } 5101 5102 bool gap_get_secure_connections_only_mode(void){ 5103 return hci_stack->gap_secure_connections_only_mode; 5104 } 5105 #endif 5106 5107 #ifdef ENABLE_CLASSIC 5108 void gap_set_class_of_device(uint32_t class_of_device){ 5109 hci_stack->class_of_device = class_of_device; 5110 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5111 hci_run(); 5112 } 5113 5114 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5115 hci_stack->default_link_policy_settings = default_link_policy_settings; 5116 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5117 hci_run(); 5118 } 5119 5120 void gap_set_allow_role_switch(bool allow_role_switch){ 5121 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5122 } 5123 5124 uint8_t hci_get_allow_role_switch(void){ 5125 return hci_stack->allow_role_switch; 5126 } 5127 5128 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5129 hci_stack->link_supervision_timeout = link_supervision_timeout; 5130 } 5131 5132 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5133 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5134 } 5135 5136 uint16_t hci_automatic_flush_timeout(void){ 5137 return hci_stack->automatic_flush_timeout; 5138 } 5139 5140 void hci_disable_l2cap_timeout_check(void){ 5141 disable_l2cap_timeouts = 1; 5142 } 5143 #endif 5144 5145 #ifndef HAVE_HOST_CONTROLLER_API 5146 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5147 void hci_set_bd_addr(bd_addr_t addr){ 5148 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5149 hci_stack->custom_bd_addr_set = 1; 5150 } 5151 #endif 5152 5153 // State-Module-Driver overview 5154 // state module low-level 5155 // HCI_STATE_OFF off close 5156 // HCI_STATE_INITIALIZING, on open 5157 // HCI_STATE_WORKING, on open 5158 // HCI_STATE_HALTING, on open 5159 // HCI_STATE_SLEEPING, off/sleep close 5160 // HCI_STATE_FALLING_ASLEEP on open 5161 5162 static int hci_power_control_on(void){ 5163 5164 // power on 5165 int err = 0; 5166 if (hci_stack->control && hci_stack->control->on){ 5167 err = (*hci_stack->control->on)(); 5168 } 5169 if (err){ 5170 log_error( "POWER_ON failed"); 5171 hci_emit_hci_open_failed(); 5172 return err; 5173 } 5174 5175 // int chipset driver 5176 if (hci_stack->chipset && hci_stack->chipset->init){ 5177 hci_stack->chipset->init(hci_stack->config); 5178 } 5179 5180 // init transport 5181 if (hci_stack->hci_transport->init){ 5182 hci_stack->hci_transport->init(hci_stack->config); 5183 } 5184 5185 // open transport 5186 err = hci_stack->hci_transport->open(); 5187 if (err){ 5188 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5189 if (hci_stack->control && hci_stack->control->off){ 5190 (*hci_stack->control->off)(); 5191 } 5192 hci_emit_hci_open_failed(); 5193 return err; 5194 } 5195 return 0; 5196 } 5197 5198 static void hci_power_control_off(void){ 5199 5200 log_info("hci_power_control_off"); 5201 5202 // close low-level device 5203 hci_stack->hci_transport->close(); 5204 5205 log_info("hci_power_control_off - hci_transport closed"); 5206 5207 // power off 5208 if (hci_stack->control && hci_stack->control->off){ 5209 (*hci_stack->control->off)(); 5210 } 5211 5212 log_info("hci_power_control_off - control closed"); 5213 5214 hci_stack->state = HCI_STATE_OFF; 5215 } 5216 5217 static void hci_power_control_sleep(void){ 5218 5219 log_info("hci_power_control_sleep"); 5220 5221 #if 0 5222 // don't close serial port during sleep 5223 5224 // close low-level device 5225 hci_stack->hci_transport->close(hci_stack->config); 5226 #endif 5227 5228 // sleep mode 5229 if (hci_stack->control && hci_stack->control->sleep){ 5230 (*hci_stack->control->sleep)(); 5231 } 5232 5233 hci_stack->state = HCI_STATE_SLEEPING; 5234 } 5235 5236 static int hci_power_control_wake(void){ 5237 5238 log_info("hci_power_control_wake"); 5239 5240 // wake on 5241 if (hci_stack->control && hci_stack->control->wake){ 5242 (*hci_stack->control->wake)(); 5243 } 5244 5245 #if 0 5246 // open low-level device 5247 int err = hci_stack->hci_transport->open(hci_stack->config); 5248 if (err){ 5249 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5250 if (hci_stack->control && hci_stack->control->off){ 5251 (*hci_stack->control->off)(); 5252 } 5253 hci_emit_hci_open_failed(); 5254 return err; 5255 } 5256 #endif 5257 5258 return 0; 5259 } 5260 5261 static void hci_power_enter_initializing_state(void){ 5262 // set up state machine 5263 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5264 hci_stack->hci_packet_buffer_reserved = false; 5265 hci_stack->state = HCI_STATE_INITIALIZING; 5266 5267 #ifndef HAVE_HOST_CONTROLLER_API 5268 if (hci_stack->chipset_pre_init) { 5269 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5270 } else 5271 #endif 5272 { 5273 hci_stack->substate = HCI_INIT_SEND_RESET; 5274 } 5275 } 5276 5277 static void hci_power_enter_halting_state(void){ 5278 #ifdef ENABLE_BLE 5279 // drop entries scheduled for removal, mark others for re-adding 5280 btstack_linked_list_iterator_t it; 5281 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5282 while (btstack_linked_list_iterator_has_next(&it)){ 5283 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5284 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5285 btstack_linked_list_iterator_remove(&it); 5286 btstack_memory_whitelist_entry_free(entry); 5287 } else { 5288 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5289 } 5290 } 5291 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5292 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5293 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5294 while (btstack_linked_list_iterator_has_next(&it)){ 5295 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5296 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5297 btstack_linked_list_iterator_remove(&it); 5298 btstack_memory_periodic_advertiser_list_entry_free(entry); 5299 } else { 5300 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5301 continue; 5302 } 5303 } 5304 #endif 5305 #endif 5306 // see hci_run 5307 hci_stack->state = HCI_STATE_HALTING; 5308 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5309 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5310 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5311 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5312 btstack_run_loop_add_timer(&hci_stack->timeout); 5313 } 5314 5315 // returns error 5316 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5317 int err; 5318 switch (power_mode){ 5319 case HCI_POWER_ON: 5320 err = hci_power_control_on(); 5321 if (err != 0) { 5322 log_error("hci_power_control_on() error %d", err); 5323 return err; 5324 } 5325 hci_power_enter_initializing_state(); 5326 break; 5327 case HCI_POWER_OFF: 5328 // do nothing 5329 break; 5330 case HCI_POWER_SLEEP: 5331 // do nothing (with SLEEP == OFF) 5332 break; 5333 default: 5334 btstack_assert(false); 5335 break; 5336 } 5337 return ERROR_CODE_SUCCESS; 5338 } 5339 5340 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5341 switch (power_mode){ 5342 case HCI_POWER_ON: 5343 // do nothing 5344 break; 5345 case HCI_POWER_OFF: 5346 // no connections yet, just turn it off 5347 hci_power_control_off(); 5348 break; 5349 case HCI_POWER_SLEEP: 5350 // no connections yet, just turn it off 5351 hci_power_control_sleep(); 5352 break; 5353 default: 5354 btstack_assert(false); 5355 break; 5356 } 5357 return ERROR_CODE_SUCCESS; 5358 } 5359 5360 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5361 switch (power_mode){ 5362 case HCI_POWER_ON: 5363 // do nothing 5364 break; 5365 case HCI_POWER_OFF: 5366 hci_power_enter_halting_state(); 5367 break; 5368 case HCI_POWER_SLEEP: 5369 // see hci_run 5370 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5371 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5372 break; 5373 default: 5374 btstack_assert(false); 5375 break; 5376 } 5377 return ERROR_CODE_SUCCESS; 5378 } 5379 5380 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5381 switch (power_mode){ 5382 case HCI_POWER_ON: 5383 hci_power_enter_initializing_state(); 5384 break; 5385 case HCI_POWER_OFF: 5386 // do nothing 5387 break; 5388 case HCI_POWER_SLEEP: 5389 // see hci_run 5390 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5391 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5392 break; 5393 default: 5394 btstack_assert(false); 5395 break; 5396 } 5397 return ERROR_CODE_SUCCESS; 5398 } 5399 5400 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5401 switch (power_mode){ 5402 case HCI_POWER_ON: 5403 hci_power_enter_initializing_state(); 5404 break; 5405 case HCI_POWER_OFF: 5406 hci_power_enter_halting_state(); 5407 break; 5408 case HCI_POWER_SLEEP: 5409 // do nothing 5410 break; 5411 default: 5412 btstack_assert(false); 5413 break; 5414 } 5415 return ERROR_CODE_SUCCESS; 5416 } 5417 5418 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5419 int err; 5420 switch (power_mode){ 5421 case HCI_POWER_ON: 5422 err = hci_power_control_wake(); 5423 if (err) return err; 5424 hci_power_enter_initializing_state(); 5425 break; 5426 case HCI_POWER_OFF: 5427 hci_power_enter_halting_state(); 5428 break; 5429 case HCI_POWER_SLEEP: 5430 // do nothing 5431 break; 5432 default: 5433 btstack_assert(false); 5434 break; 5435 } 5436 return ERROR_CODE_SUCCESS; 5437 } 5438 5439 int hci_power_control(HCI_POWER_MODE power_mode){ 5440 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5441 btstack_run_loop_remove_timer(&hci_stack->timeout); 5442 int err = 0; 5443 switch (hci_stack->state){ 5444 case HCI_STATE_OFF: 5445 err = hci_power_control_state_off(power_mode); 5446 break; 5447 case HCI_STATE_INITIALIZING: 5448 err = hci_power_control_state_initializing(power_mode); 5449 break; 5450 case HCI_STATE_WORKING: 5451 err = hci_power_control_state_working(power_mode); 5452 break; 5453 case HCI_STATE_HALTING: 5454 err = hci_power_control_state_halting(power_mode); 5455 break; 5456 case HCI_STATE_FALLING_ASLEEP: 5457 err = hci_power_control_state_falling_asleep(power_mode); 5458 break; 5459 case HCI_STATE_SLEEPING: 5460 err = hci_power_control_state_sleeping(power_mode); 5461 break; 5462 default: 5463 btstack_assert(false); 5464 break; 5465 } 5466 if (err != 0){ 5467 return err; 5468 } 5469 5470 // create internal event 5471 hci_emit_state(); 5472 5473 // trigger next/first action 5474 hci_run(); 5475 5476 return 0; 5477 } 5478 5479 5480 static void hci_halting_run(void) { 5481 5482 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5483 5484 hci_connection_t *connection; 5485 #ifdef ENABLE_BLE 5486 #ifdef ENABLE_LE_PERIPHERAL 5487 bool stop_advertismenets; 5488 #endif 5489 #endif 5490 5491 switch (hci_stack->substate) { 5492 case HCI_HALTING_CLASSIC_STOP: 5493 #ifdef ENABLE_CLASSIC 5494 if (!hci_can_send_command_packet_now()) return; 5495 5496 if (hci_stack->connectable || hci_stack->discoverable){ 5497 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5498 hci_send_cmd(&hci_write_scan_enable, 0); 5499 return; 5500 } 5501 #endif 5502 /* fall through */ 5503 5504 case HCI_HALTING_LE_ADV_STOP: 5505 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5506 5507 #ifdef ENABLE_BLE 5508 #ifdef ENABLE_LE_PERIPHERAL 5509 if (!hci_can_send_command_packet_now()) return; 5510 5511 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5512 5513 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5514 if (hci_le_extended_advertising_supported()){ 5515 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5516 btstack_linked_list_iterator_t it; 5517 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5518 // stop all periodic advertisements and check if an extended set is active 5519 while (btstack_linked_list_iterator_has_next(&it)){ 5520 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5521 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5522 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5523 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5524 return; 5525 } 5526 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5527 stop_advertismenets = true; 5528 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5529 } 5530 } 5531 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5532 if (stop_advertismenets){ 5533 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5534 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5535 return; 5536 } 5537 } else 5538 #else /* ENABLE_LE_PERIPHERAL */ 5539 { 5540 if (stop_advertismenets) { 5541 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5542 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5543 return; 5544 } 5545 } 5546 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5547 #endif /* ENABLE_LE_PERIPHERAL */ 5548 #endif /* ENABLE_BLE */ 5549 5550 /* fall through */ 5551 5552 case HCI_HALTING_LE_SCAN_STOP: 5553 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5554 if (!hci_can_send_command_packet_now()) return; 5555 5556 #ifdef ENABLE_BLE 5557 #ifdef ENABLE_LE_CENTRAL 5558 if (hci_stack->le_scanning_active){ 5559 hci_le_scan_stop(); 5560 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5561 return; 5562 } 5563 #endif 5564 #endif 5565 5566 /* fall through */ 5567 5568 case HCI_HALTING_DISCONNECT_ALL: 5569 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5570 if (!hci_can_send_command_packet_now()) return; 5571 5572 // close all open connections 5573 connection = (hci_connection_t *) hci_stack->connections; 5574 if (connection) { 5575 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5576 5577 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5578 5579 // check state 5580 switch(connection->state) { 5581 case SENT_DISCONNECT: 5582 case RECEIVED_DISCONNECTION_COMPLETE: 5583 // wait until connection is gone 5584 return; 5585 default: 5586 break; 5587 } 5588 5589 // finally, send the disconnect command 5590 connection->state = SENT_DISCONNECT; 5591 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5592 return; 5593 } 5594 5595 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5596 // stop BIGs and BIG Syncs 5597 if (hci_stack->le_audio_bigs != NULL){ 5598 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5599 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5600 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5601 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5602 return; 5603 } 5604 if (hci_stack->le_audio_big_syncs != NULL){ 5605 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5606 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5607 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5608 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5609 return; 5610 } 5611 #endif 5612 5613 btstack_run_loop_remove_timer(&hci_stack->timeout); 5614 5615 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5616 log_info("HCI_STATE_HALTING: wait 50 ms"); 5617 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5618 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5619 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5620 btstack_run_loop_add_timer(&hci_stack->timeout); 5621 break; 5622 5623 case HCI_HALTING_W4_CLOSE_TIMER: 5624 // keep waiting 5625 break; 5626 5627 case HCI_HALTING_CLOSE: 5628 // close left over connections (that had not been properly closed before) 5629 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5630 hci_discard_connections(); 5631 5632 log_info("HCI_STATE_HALTING, calling off"); 5633 5634 // switch mode 5635 hci_power_control_off(); 5636 5637 log_info("HCI_STATE_HALTING, emitting state"); 5638 hci_emit_state(); 5639 log_info("HCI_STATE_HALTING, done"); 5640 break; 5641 5642 default: 5643 break; 5644 } 5645 }; 5646 5647 static void hci_falling_asleep_run(void){ 5648 hci_connection_t * connection; 5649 switch(hci_stack->substate) { 5650 case HCI_FALLING_ASLEEP_DISCONNECT: 5651 log_info("HCI_STATE_FALLING_ASLEEP"); 5652 // close all open connections 5653 connection = (hci_connection_t *) hci_stack->connections; 5654 if (connection){ 5655 5656 // send disconnect 5657 if (!hci_can_send_command_packet_now()) return; 5658 5659 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5660 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5661 5662 // send disconnected event right away - causes higher layer connections to get closed, too. 5663 hci_shutdown_connection(connection); 5664 return; 5665 } 5666 5667 if (hci_classic_supported()){ 5668 // disable page and inquiry scan 5669 if (!hci_can_send_command_packet_now()) return; 5670 5671 log_info("HCI_STATE_HALTING, disabling inq scans"); 5672 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5673 5674 // continue in next sub state 5675 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5676 break; 5677 } 5678 5679 /* fall through */ 5680 5681 case HCI_FALLING_ASLEEP_COMPLETE: 5682 log_info("HCI_STATE_HALTING, calling sleep"); 5683 // switch mode 5684 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5685 hci_emit_state(); 5686 break; 5687 5688 default: 5689 break; 5690 } 5691 } 5692 5693 #ifdef ENABLE_CLASSIC 5694 5695 static void hci_update_scan_enable(void){ 5696 // 2 = page scan, 1 = inq scan 5697 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5698 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5699 hci_run(); 5700 } 5701 5702 void gap_discoverable_control(uint8_t enable){ 5703 if (enable) enable = 1; // normalize argument 5704 5705 if (hci_stack->discoverable == enable){ 5706 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5707 return; 5708 } 5709 5710 hci_stack->discoverable = enable; 5711 hci_update_scan_enable(); 5712 } 5713 5714 void gap_connectable_control(uint8_t enable){ 5715 if (enable) enable = 1; // normalize argument 5716 5717 // don't emit event 5718 if (hci_stack->connectable == enable) return; 5719 5720 hci_stack->connectable = enable; 5721 hci_update_scan_enable(); 5722 } 5723 #endif 5724 5725 void gap_local_bd_addr(bd_addr_t address_buffer){ 5726 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5727 } 5728 5729 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5730 static void hci_host_num_completed_packets(void){ 5731 5732 // create packet manually as arrays are not supported and num_commands should not get reduced 5733 hci_reserve_packet_buffer(); 5734 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5735 5736 uint16_t size = 0; 5737 uint16_t num_handles = 0; 5738 packet[size++] = 0x35; 5739 packet[size++] = 0x0c; 5740 size++; // skip param len 5741 size++; // skip num handles 5742 5743 // add { handle, packets } entries 5744 btstack_linked_item_t * it; 5745 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5746 hci_connection_t * connection = (hci_connection_t *) it; 5747 if (connection->num_packets_completed){ 5748 little_endian_store_16(packet, size, connection->con_handle); 5749 size += 2; 5750 little_endian_store_16(packet, size, connection->num_packets_completed); 5751 size += 2; 5752 // 5753 num_handles++; 5754 connection->num_packets_completed = 0; 5755 } 5756 } 5757 5758 packet[2] = size - 3; 5759 packet[3] = num_handles; 5760 5761 hci_stack->host_completed_packets = 0; 5762 5763 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5764 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5765 5766 // release packet buffer for synchronous transport implementations 5767 if (hci_transport_synchronous()){ 5768 hci_release_packet_buffer(); 5769 hci_emit_transport_packet_sent(); 5770 } 5771 } 5772 #endif 5773 5774 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5775 UNUSED(ds); 5776 hci_stack->substate = HCI_HALTING_CLOSE; 5777 hci_halting_run(); 5778 } 5779 5780 static bool hci_run_acl_fragments(void){ 5781 if (hci_stack->acl_fragmentation_total_size > 0u) { 5782 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5783 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5784 if (connection) { 5785 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5786 hci_send_acl_packet_fragments(connection); 5787 return true; 5788 } 5789 } else { 5790 // connection gone -> discard further fragments 5791 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5792 hci_stack->acl_fragmentation_total_size = 0; 5793 hci_stack->acl_fragmentation_pos = 0; 5794 } 5795 } 5796 return false; 5797 } 5798 5799 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5800 static bool hci_run_iso_fragments(void){ 5801 if (hci_stack->iso_fragmentation_total_size > 0u) { 5802 // TODO: flow control 5803 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5804 hci_send_iso_packet_fragments(); 5805 return true; 5806 } 5807 } 5808 return false; 5809 } 5810 #endif 5811 5812 #ifdef ENABLE_CLASSIC 5813 5814 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5815 static bool hci_classic_operation_active(void) { 5816 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5817 return true; 5818 } 5819 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5820 return true; 5821 } 5822 btstack_linked_item_t * it; 5823 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5824 hci_connection_t *connection = (hci_connection_t *) it; 5825 switch (connection->state) { 5826 case SENT_CREATE_CONNECTION: 5827 case SENT_CANCEL_CONNECTION: 5828 case SENT_DISCONNECT: 5829 return true; 5830 default: 5831 break; 5832 } 5833 } 5834 return false; 5835 } 5836 #endif 5837 5838 static bool hci_run_general_gap_classic(void){ 5839 5840 // assert stack is working and classic is active 5841 if (hci_classic_supported() == false) return false; 5842 if (hci_stack->state != HCI_STATE_WORKING) return false; 5843 5844 // decline incoming connections 5845 if (hci_stack->decline_reason){ 5846 uint8_t reason = hci_stack->decline_reason; 5847 hci_stack->decline_reason = 0; 5848 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5849 return true; 5850 } 5851 5852 if (hci_stack->gap_tasks_classic != 0){ 5853 hci_run_gap_tasks_classic(); 5854 return true; 5855 } 5856 5857 // start/stop inquiry 5858 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5859 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5860 if (hci_classic_operation_active() == false) 5861 #endif 5862 { 5863 uint8_t duration = hci_stack->inquiry_state; 5864 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5865 if (hci_stack->inquiry_max_period_length != 0){ 5866 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); 5867 } else { 5868 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5869 } 5870 return true; 5871 } 5872 } 5873 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5874 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5875 hci_send_cmd(&hci_inquiry_cancel); 5876 return true; 5877 } 5878 5879 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5880 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5881 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5882 return true; 5883 } 5884 5885 // remote name request 5886 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5887 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5888 if (hci_classic_operation_active() == false) 5889 #endif 5890 { 5891 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5892 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5893 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5894 return true; 5895 } 5896 } 5897 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5898 // Local OOB data 5899 if (hci_stack->classic_read_local_oob_data){ 5900 hci_stack->classic_read_local_oob_data = false; 5901 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5902 hci_send_cmd(&hci_read_local_extended_oob_data); 5903 } else { 5904 hci_send_cmd(&hci_read_local_oob_data); 5905 } 5906 } 5907 #endif 5908 // pairing 5909 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5910 uint8_t state = hci_stack->gap_pairing_state; 5911 uint8_t pin_code[PIN_CODE_LEN]; 5912 switch (state){ 5913 case GAP_PAIRING_STATE_SEND_PIN: 5914 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5915 memset(pin_code, 0, 16); 5916 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5917 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5918 break; 5919 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5920 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5921 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5922 break; 5923 case GAP_PAIRING_STATE_SEND_PASSKEY: 5924 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5925 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5926 break; 5927 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5928 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5929 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5930 break; 5931 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5932 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5933 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5934 break; 5935 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5936 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5937 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5938 break; 5939 default: 5940 break; 5941 } 5942 return true; 5943 } 5944 return false; 5945 } 5946 #endif 5947 5948 #ifdef ENABLE_BLE 5949 5950 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5951 static uint8_t hci_le_num_phys(uint8_t phys){ 5952 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5953 btstack_assert(phys); 5954 return num_bits_set[phys]; 5955 } 5956 #endif 5957 5958 #ifdef ENABLE_LE_CENTRAL 5959 static void hci_le_scan_stop(void){ 5960 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5961 if (hci_le_extended_advertising_supported()) { 5962 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5963 } else 5964 #endif 5965 { 5966 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5967 } 5968 } 5969 5970 static void 5971 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5972 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5973 if (hci_le_extended_advertising_supported()) { 5974 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5975 uint16_t le_connection_scan_interval[3]; 5976 uint16_t le_connection_scan_window[3]; 5977 uint16_t le_connection_interval_min[3]; 5978 uint16_t le_connection_interval_max[3]; 5979 uint16_t le_connection_latency[3]; 5980 uint16_t le_supervision_timeout[3]; 5981 uint16_t le_minimum_ce_length[3]; 5982 uint16_t le_maximum_ce_length[3]; 5983 5984 uint8_t i; 5985 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5986 for (i=0;i<num_phys;i++){ 5987 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5988 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5989 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5990 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5991 le_connection_latency[i] = hci_stack->le_connection_latency; 5992 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5993 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5994 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5995 } 5996 hci_send_cmd(&hci_le_extended_create_connection, 5997 initiator_filter_policy, 5998 hci_stack->le_connection_own_addr_type, // our addr type: 5999 address_type, // peer address type 6000 address, // peer bd addr 6001 hci_stack->le_connection_phys, // initiating PHY 6002 le_connection_scan_interval, // conn scan interval 6003 le_connection_scan_window, // conn scan windows 6004 le_connection_interval_min, // conn interval min 6005 le_connection_interval_max, // conn interval max 6006 le_connection_latency, // conn latency 6007 le_supervision_timeout, // conn latency 6008 le_minimum_ce_length, // min ce length 6009 le_maximum_ce_length // max ce length 6010 ); 6011 } else 6012 #endif 6013 { 6014 hci_send_cmd(&hci_le_create_connection, 6015 hci_stack->le_connection_scan_interval, // conn scan interval 6016 hci_stack->le_connection_scan_window, // conn scan windows 6017 initiator_filter_policy, // don't use whitelist 6018 address_type, // peer address type 6019 address, // peer bd addr 6020 hci_stack->le_connection_own_addr_type, // our addr type: 6021 hci_stack->le_connection_interval_min, // conn interval min 6022 hci_stack->le_connection_interval_max, // conn interval max 6023 hci_stack->le_connection_latency, // conn latency 6024 hci_stack->le_supervision_timeout, // conn latency 6025 hci_stack->le_minimum_ce_length, // min ce length 6026 hci_stack->le_maximum_ce_length // max ce length 6027 ); 6028 } 6029 } 6030 #endif 6031 6032 #ifdef ENABLE_LE_PERIPHERAL 6033 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6034 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6035 uint8_t operation = 0; 6036 if (pos == 0){ 6037 // first fragment or complete data 6038 operation |= 1; 6039 } 6040 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6041 // last fragment or complete data 6042 operation |= 2; 6043 } 6044 return operation; 6045 } 6046 #endif 6047 #endif 6048 6049 static bool hci_run_general_gap_le(void){ 6050 6051 btstack_linked_list_iterator_t lit; 6052 6053 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6054 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6055 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6056 hci_stack->le_resolvable_private_address_update_s = 0; 6057 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6058 return true; 6059 } 6060 #endif 6061 6062 // Phase 1: collect what to stop 6063 6064 #ifdef ENABLE_LE_CENTRAL 6065 bool scanning_stop = false; 6066 bool connecting_stop = false; 6067 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6068 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6069 bool periodic_sync_stop = false; 6070 #endif 6071 #endif 6072 #endif 6073 6074 #ifdef ENABLE_LE_PERIPHERAL 6075 bool advertising_stop = false; 6076 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6077 le_advertising_set_t * advertising_stop_set = NULL; 6078 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6079 bool periodic_advertising_stop = false; 6080 #endif 6081 #endif 6082 #endif 6083 6084 // check if own address changes 6085 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6086 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6087 6088 // check if whitelist needs modification 6089 bool whitelist_modification_pending = false; 6090 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6091 while (btstack_linked_list_iterator_has_next(&lit)){ 6092 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6093 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6094 whitelist_modification_pending = true; 6095 break; 6096 } 6097 } 6098 6099 // check if resolving list needs modification 6100 bool resolving_list_modification_pending = false; 6101 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6102 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6103 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6104 resolving_list_modification_pending = true; 6105 } 6106 #endif 6107 6108 #ifdef ENABLE_LE_CENTRAL 6109 6110 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6111 // check if periodic advertiser list needs modification 6112 bool periodic_list_modification_pending = false; 6113 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6114 while (btstack_linked_list_iterator_has_next(&lit)){ 6115 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6116 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6117 periodic_list_modification_pending = true; 6118 break; 6119 } 6120 } 6121 #endif 6122 6123 // scanning control 6124 if (hci_stack->le_scanning_active) { 6125 // stop if: 6126 // - parameter change required 6127 // - it's disabled 6128 // - whitelist change required but used for scanning 6129 // - resolving list modified 6130 // - own address changes 6131 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6132 if ((hci_stack->le_scanning_param_update) || 6133 !hci_stack->le_scanning_enabled || 6134 (scanning_uses_whitelist && whitelist_modification_pending) || 6135 resolving_list_modification_pending || 6136 random_address_change){ 6137 6138 scanning_stop = true; 6139 } 6140 } 6141 6142 // connecting control 6143 bool connecting_with_whitelist; 6144 switch (hci_stack->le_connecting_state){ 6145 case LE_CONNECTING_DIRECT: 6146 case LE_CONNECTING_WHITELIST: 6147 // stop connecting if: 6148 // - connecting uses white and whitelist modification pending 6149 // - if it got disabled 6150 // - resolving list modified 6151 // - own address changes 6152 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6153 if ((connecting_with_whitelist && whitelist_modification_pending) || 6154 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6155 resolving_list_modification_pending || 6156 random_address_change) { 6157 6158 connecting_stop = true; 6159 } 6160 break; 6161 default: 6162 break; 6163 } 6164 6165 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6166 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6167 // periodic sync control 6168 bool sync_with_advertiser_list; 6169 switch(hci_stack->le_periodic_sync_state){ 6170 case LE_CONNECTING_DIRECT: 6171 case LE_CONNECTING_WHITELIST: 6172 // stop sync if: 6173 // - sync with advertiser list and advertiser list modification pending 6174 // - if it got disabled 6175 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6176 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6177 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6178 periodic_sync_stop = true; 6179 } 6180 break; 6181 default: 6182 break; 6183 } 6184 #endif 6185 #endif 6186 6187 #endif /* ENABLE_LE_CENTRAL */ 6188 6189 #ifdef ENABLE_LE_PERIPHERAL 6190 // le advertisement control 6191 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6192 // stop if: 6193 // - parameter change required 6194 // - random address used in advertising and changes 6195 // - it's disabled 6196 // - whitelist change required but used for advertisement filter policy 6197 // - resolving list modified 6198 // - own address changes 6199 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6200 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6201 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6202 if (advertising_change || 6203 (advertising_uses_random_address && random_address_change) || 6204 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6205 (advertising_uses_whitelist && whitelist_modification_pending) || 6206 resolving_list_modification_pending || 6207 random_address_change) { 6208 6209 advertising_stop = true; 6210 } 6211 } 6212 6213 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6214 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6215 btstack_linked_list_iterator_t it; 6216 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6217 while (btstack_linked_list_iterator_has_next(&it)){ 6218 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6219 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6220 // stop if: 6221 // - parameter change required 6222 // - random address used in connectable advertising and changes 6223 // - it's disabled 6224 // - whitelist change required but used for advertisement filter policy 6225 // - resolving list modified 6226 // - own address changes 6227 // - advertisement set will be removed 6228 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6229 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6230 bool advertising_uses_random_address = 6231 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6232 advertising_connectable; 6233 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6234 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6235 bool advertising_set_random_address_change = 6236 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6237 bool advertising_set_will_be_removed = 6238 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6239 if (advertising_parameter_change || 6240 (advertising_uses_random_address && advertising_set_random_address_change) || 6241 (advertising_enabled == false) || 6242 (advertising_uses_whitelist && whitelist_modification_pending) || 6243 resolving_list_modification_pending || 6244 advertising_set_will_be_removed) { 6245 6246 advertising_stop = true; 6247 advertising_stop_set = advertising_set; 6248 break; 6249 } 6250 } 6251 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6252 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6253 // stop if: 6254 // - it's disabled 6255 // - parameter change required 6256 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6257 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6258 if ((periodic_enabled == false) || periodic_parameter_change){ 6259 periodic_advertising_stop = true; 6260 advertising_stop_set = advertising_set; 6261 } 6262 } 6263 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6264 } 6265 } 6266 #endif 6267 6268 #endif 6269 6270 6271 // Phase 2: stop everything that should be off during modifications 6272 6273 6274 // 2.1 Outgoing connection 6275 #ifdef ENABLE_LE_CENTRAL 6276 if (connecting_stop){ 6277 hci_send_cmd(&hci_le_create_connection_cancel); 6278 return true; 6279 } 6280 #endif 6281 6282 // 2.2 Scanning 6283 #ifdef ENABLE_LE_CENTRAL 6284 if (scanning_stop){ 6285 hci_stack->le_scanning_active = false; 6286 hci_le_scan_stop(); 6287 return true; 6288 } 6289 6290 // 2.3 Periodic Sync 6291 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6292 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6293 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6294 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6295 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6296 return true; 6297 } 6298 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6299 if (periodic_sync_stop){ 6300 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6301 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6302 return true; 6303 } 6304 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6305 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6306 #endif /* ENABLE_LE_CENTRAL */ 6307 6308 // 2.4 Advertising: legacy, extended, periodic 6309 #ifdef ENABLE_LE_PERIPHERAL 6310 if (advertising_stop){ 6311 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6312 if (hci_le_extended_advertising_supported()) { 6313 uint8_t advertising_stop_handle; 6314 if (advertising_stop_set != NULL){ 6315 advertising_stop_handle = advertising_stop_set->advertising_handle; 6316 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6317 } else { 6318 advertising_stop_handle = 0; 6319 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6320 } 6321 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6322 const uint16_t durations[] = { 0 }; 6323 const uint16_t max_events[] = { 0 }; 6324 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6325 } else 6326 #endif 6327 { 6328 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6329 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6330 } 6331 return true; 6332 } 6333 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6334 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6335 if (periodic_advertising_stop){ 6336 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6337 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6338 return true; 6339 } 6340 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6341 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6342 #endif /* ENABLE_LE_PERIPHERAL */ 6343 6344 6345 // Phase 3: modify 6346 6347 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6348 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6349 // GAP Privacy, notify clients upon upcoming random address change 6350 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6351 gap_privacy_clients_notify(hci_stack->le_random_address); 6352 } 6353 6354 // - wait until privacy update completed 6355 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6356 return false; 6357 } 6358 6359 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6360 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6361 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6362 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6363 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6364 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6365 #endif 6366 return true; 6367 } 6368 6369 #ifdef ENABLE_LE_CENTRAL 6370 if (hci_stack->le_scanning_param_update){ 6371 hci_stack->le_scanning_param_update = false; 6372 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6373 if (hci_le_extended_advertising_supported()){ 6374 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6375 uint8_t scan_types[2]; 6376 uint16_t scan_intervals[2]; 6377 uint16_t scan_windows[2]; 6378 6379 uint8_t i; 6380 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6381 for (i=0;i<num_phys;i++){ 6382 scan_types[i] = hci_stack->le_scan_type; 6383 scan_intervals[i] = hci_stack->le_scan_interval; 6384 scan_windows[i] = hci_stack->le_scan_window; 6385 } 6386 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6387 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6388 } else 6389 #endif 6390 { 6391 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6392 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6393 } 6394 return true; 6395 } 6396 #endif 6397 6398 #ifdef ENABLE_LE_PERIPHERAL 6399 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6400 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6401 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6402 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6403 if (hci_le_extended_advertising_supported()){ 6404 // map advertisment type to advertising event properties 6405 uint16_t adv_event_properties = 0; 6406 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6407 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6408 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6409 } 6410 hci_stack->le_advertising_set_in_current_command = 0; 6411 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6412 0, 6413 adv_event_properties, 6414 hci_stack->le_advertisements_interval_min, 6415 hci_stack->le_advertisements_interval_max, 6416 hci_stack->le_advertisements_channel_map, 6417 hci_stack->le_advertisements_own_addr_type, 6418 hci_stack->le_advertisements_direct_address_type, 6419 hci_stack->le_advertisements_direct_address, 6420 hci_stack->le_advertisements_filter_policy, 6421 0x7f, // tx power: no preference 6422 0x01, // primary adv phy: LE 1M 6423 0, // secondary adv max skip 6424 0x01, // secondary adv phy 6425 0, // adv sid 6426 0 // scan request notification 6427 ); 6428 } else 6429 #endif 6430 { 6431 hci_send_cmd(&hci_le_set_advertising_parameters, 6432 hci_stack->le_advertisements_interval_min, 6433 hci_stack->le_advertisements_interval_max, 6434 hci_stack->le_advertisements_type, 6435 hci_stack->le_advertisements_own_addr_type, 6436 hci_stack->le_advertisements_direct_address_type, 6437 hci_stack->le_advertisements_direct_address, 6438 hci_stack->le_advertisements_channel_map, 6439 hci_stack->le_advertisements_filter_policy); 6440 } 6441 return true; 6442 } 6443 6444 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6445 // assumption: only set if extended advertising is supported 6446 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6447 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6448 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6449 return true; 6450 } 6451 #endif 6452 6453 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6454 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6455 uint8_t adv_data_clean[31]; 6456 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6457 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6458 hci_stack->le_advertisements_data_len); 6459 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6460 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6461 if (hci_le_extended_advertising_supported()){ 6462 hci_stack->le_advertising_set_in_current_command = 0; 6463 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6464 } else 6465 #endif 6466 { 6467 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6468 } 6469 return true; 6470 } 6471 6472 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6473 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6474 uint8_t scan_data_clean[31]; 6475 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6476 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6477 hci_stack->le_scan_response_data_len); 6478 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6479 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6480 if (hci_le_extended_advertising_supported()){ 6481 hci_stack->le_advertising_set_in_current_command = 0; 6482 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6483 } else 6484 #endif 6485 { 6486 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6487 } 6488 return true; 6489 } 6490 6491 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6492 if (hci_le_extended_advertising_supported()) { 6493 btstack_linked_list_iterator_t it; 6494 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6495 while (btstack_linked_list_iterator_has_next(&it)){ 6496 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6497 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6498 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6499 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6500 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6501 return true; 6502 } 6503 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6504 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6505 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6506 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6507 advertising_set->advertising_handle, 6508 advertising_set->extended_params.advertising_event_properties, 6509 advertising_set->extended_params.primary_advertising_interval_min, 6510 advertising_set->extended_params.primary_advertising_interval_max, 6511 advertising_set->extended_params.primary_advertising_channel_map, 6512 advertising_set->extended_params.own_address_type, 6513 advertising_set->extended_params.peer_address_type, 6514 advertising_set->extended_params.peer_address, 6515 advertising_set->extended_params.advertising_filter_policy, 6516 advertising_set->extended_params.advertising_tx_power, 6517 advertising_set->extended_params.primary_advertising_phy, 6518 advertising_set->extended_params.secondary_advertising_max_skip, 6519 advertising_set->extended_params.secondary_advertising_phy, 6520 advertising_set->extended_params.advertising_sid, 6521 advertising_set->extended_params.scan_request_notification_enable 6522 ); 6523 return true; 6524 } 6525 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6526 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6527 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6528 return true; 6529 } 6530 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6531 uint16_t pos = advertising_set->adv_data_pos; 6532 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6533 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6534 if ((operation & 0x02) != 0){ 6535 // last fragment or complete data 6536 operation |= 2; 6537 advertising_set->adv_data_pos = 0; 6538 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6539 } else { 6540 advertising_set->adv_data_pos += data_to_upload; 6541 } 6542 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6543 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6544 return true; 6545 } 6546 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6547 uint16_t pos = advertising_set->scan_data_pos; 6548 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6549 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6550 if ((operation & 0x02) != 0){ 6551 advertising_set->scan_data_pos = 0; 6552 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6553 } else { 6554 advertising_set->scan_data_pos += data_to_upload; 6555 } 6556 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6557 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6558 return true; 6559 } 6560 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6561 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6562 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6563 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6564 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6565 advertising_set->advertising_handle, 6566 advertising_set->periodic_params.periodic_advertising_interval_min, 6567 advertising_set->periodic_params.periodic_advertising_interval_max, 6568 advertising_set->periodic_params.periodic_advertising_properties); 6569 return true; 6570 } 6571 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6572 uint16_t pos = advertising_set->periodic_data_pos; 6573 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6574 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6575 if ((operation & 0x02) != 0){ 6576 // last fragment or complete data 6577 operation |= 2; 6578 advertising_set->periodic_data_pos = 0; 6579 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6580 } else { 6581 advertising_set->periodic_data_pos += data_to_upload; 6582 } 6583 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6584 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6585 return true; 6586 } 6587 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6588 } 6589 } 6590 #endif 6591 6592 #endif 6593 6594 #ifdef ENABLE_LE_CENTRAL 6595 // if connect with whitelist was active and is not cancelled yet, wait until next time 6596 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6597 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6598 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6599 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6600 #endif 6601 #endif 6602 6603 // LE Whitelist Management 6604 if (whitelist_modification_pending){ 6605 // add/remove entries 6606 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6607 while (btstack_linked_list_iterator_has_next(&lit)){ 6608 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6609 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6610 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6611 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6612 bd_addr_type_t address_type = entry->address_type; 6613 bd_addr_t address; 6614 memcpy(address, entry->address, 6); 6615 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6616 // remove from whitelist if not scheduled for re-addition 6617 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6618 btstack_memory_whitelist_entry_free(entry); 6619 } 6620 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6621 return true; 6622 } 6623 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6624 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6625 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6626 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6627 return true; 6628 } 6629 } 6630 } 6631 6632 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6633 // LE Resolving List Management 6634 if (resolving_list_modification_pending) { 6635 uint16_t i; 6636 uint8_t null_16[16]; 6637 uint8_t local_irk_flipped[16]; 6638 const uint8_t *local_irk; 6639 switch (hci_stack->le_resolving_list_state) { 6640 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6641 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6642 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6643 return true; 6644 case LE_RESOLVING_LIST_READ_SIZE: 6645 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6646 hci_send_cmd(&hci_le_read_resolving_list_size); 6647 return true; 6648 case LE_RESOLVING_LIST_SEND_CLEAR: 6649 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6650 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6651 sizeof(hci_stack->le_resolving_list_add_entries)); 6652 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6653 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6654 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6655 sizeof(hci_stack->le_resolving_list_remove_entries)); 6656 hci_send_cmd(&hci_le_clear_resolving_list); 6657 return true; 6658 case LE_RESOLVING_LIST_SET_IRK: 6659 // set IRK used by RPA for undirected advertising 6660 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6661 local_irk = gap_get_persistent_irk(); 6662 reverse_128(local_irk, local_irk_flipped); 6663 memset(null_16, 0, sizeof(null_16)); 6664 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6665 null_16, local_irk_flipped); 6666 return true; 6667 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6668 // first remove old entries 6669 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6670 uint8_t offset = i >> 3; 6671 uint8_t mask = 1 << (i & 7); 6672 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6673 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6674 bd_addr_t peer_identity_addreses; 6675 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6676 sm_key_t peer_irk; 6677 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6678 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6679 6680 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6681 // trigger whitelist entry 'update' (work around for controller bug) 6682 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6683 while (btstack_linked_list_iterator_has_next(&lit)) { 6684 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6685 if (entry->address_type != peer_identity_addr_type) continue; 6686 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6687 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6688 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6689 } 6690 #endif 6691 6692 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6693 peer_identity_addreses); 6694 return true; 6695 } 6696 6697 // then add new entries 6698 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6699 uint8_t offset = i >> 3; 6700 uint8_t mask = 1 << (i & 7); 6701 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6702 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6703 bd_addr_t peer_identity_addreses; 6704 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6705 sm_key_t peer_irk; 6706 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6707 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6708 if (btstack_is_null(peer_irk, 16)) continue; 6709 local_irk = gap_get_persistent_irk(); 6710 // command uses format specifier 'P' that stores 16-byte value without flip 6711 uint8_t peer_irk_flipped[16]; 6712 reverse_128(local_irk, local_irk_flipped); 6713 reverse_128(peer_irk, peer_irk_flipped); 6714 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6715 peer_irk_flipped, local_irk_flipped); 6716 return true; 6717 } 6718 6719 // finally, set privacy mode 6720 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6721 uint8_t offset = i >> 3; 6722 uint8_t mask = 1 << (i & 7); 6723 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6724 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6725 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6726 // Network Privacy Mode is default 6727 continue; 6728 } 6729 bd_addr_t peer_identity_address; 6730 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6731 sm_key_t peer_irk; 6732 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6733 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6734 if (btstack_is_null(peer_irk, 16)) continue; 6735 // command uses format specifier 'P' that stores 16-byte value without flip 6736 uint8_t peer_irk_flipped[16]; 6737 reverse_128(peer_irk, peer_irk_flipped); 6738 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6739 return true; 6740 } 6741 break; 6742 6743 default: 6744 break; 6745 } 6746 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6747 } 6748 #endif 6749 6750 #ifdef ENABLE_LE_CENTRAL 6751 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6752 // LE Whitelist Management 6753 if (periodic_list_modification_pending){ 6754 // add/remove entries 6755 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6756 while (btstack_linked_list_iterator_has_next(&lit)){ 6757 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6758 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6759 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6760 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6761 return true; 6762 } 6763 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6764 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6765 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6766 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6767 return true; 6768 } 6769 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6770 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6771 btstack_memory_periodic_advertiser_list_entry_free(entry); 6772 } 6773 } 6774 } 6775 #endif 6776 #endif 6777 6778 #ifdef ENABLE_LE_CENTRAL 6779 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6780 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6781 if (hci_stack->le_past_set_default_params){ 6782 hci_stack->le_past_set_default_params = false; 6783 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6784 hci_stack->le_past_mode, 6785 hci_stack->le_past_skip, 6786 hci_stack->le_past_sync_timeout, 6787 hci_stack->le_past_cte_type); 6788 return true; 6789 } 6790 #endif 6791 #endif 6792 #endif 6793 6794 // post-pone all actions until stack is fully working 6795 if (hci_stack->state != HCI_STATE_WORKING) return false; 6796 6797 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6798 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6799 6800 // Phase 4: restore state 6801 6802 #ifdef ENABLE_LE_CENTRAL 6803 // re-start scanning 6804 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6805 hci_stack->le_scanning_active = true; 6806 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6807 if (hci_le_extended_advertising_supported()){ 6808 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6809 } else 6810 #endif 6811 { 6812 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6813 } 6814 return true; 6815 } 6816 #endif 6817 6818 #ifdef ENABLE_LE_CENTRAL 6819 // re-start connecting 6820 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6821 bd_addr_t null_addr; 6822 memset(null_addr, 0, 6); 6823 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6824 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6825 hci_send_le_create_connection(1, 0, null_addr); 6826 return true; 6827 } 6828 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6829 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6830 switch(hci_stack->le_periodic_sync_request){ 6831 case LE_CONNECTING_DIRECT: 6832 case LE_CONNECTING_WHITELIST: 6833 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6834 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6835 hci_stack->le_periodic_sync_options, 6836 hci_stack->le_periodic_sync_advertising_sid, 6837 hci_stack->le_periodic_sync_advertiser_address_type, 6838 hci_stack->le_periodic_sync_advertiser_address, 6839 hci_stack->le_periodic_sync_skip, 6840 hci_stack->le_periodic_sync_timeout, 6841 hci_stack->le_periodic_sync_cte_type); 6842 return true; 6843 default: 6844 break; 6845 } 6846 } 6847 #endif 6848 #endif 6849 6850 #ifdef ENABLE_LE_PERIPHERAL 6851 // re-start advertising 6852 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6853 // check if advertisements should be enabled given 6854 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6855 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6856 6857 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6858 if (hci_le_extended_advertising_supported()){ 6859 const uint8_t advertising_handles[] = { 0 }; 6860 const uint16_t durations[] = { 0 }; 6861 const uint16_t max_events[] = { 0 }; 6862 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6863 } else 6864 #endif 6865 { 6866 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6867 } 6868 return true; 6869 } 6870 6871 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6872 if (hci_le_extended_advertising_supported()) { 6873 btstack_linked_list_iterator_t it; 6874 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6875 while (btstack_linked_list_iterator_has_next(&it)) { 6876 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6877 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6878 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6879 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6880 const uint16_t durations[] = { advertising_set->enable_timeout }; 6881 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6882 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6883 return true; 6884 } 6885 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6886 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6887 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6888 uint8_t enable = 1; 6889 if (advertising_set->periodic_include_adi){ 6890 enable |= 2; 6891 } 6892 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6893 return true; 6894 } 6895 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6896 } 6897 } 6898 #endif 6899 #endif 6900 6901 return false; 6902 } 6903 6904 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6905 static bool hci_run_iso_tasks(void){ 6906 btstack_linked_list_iterator_t it; 6907 6908 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6909 return false; 6910 } 6911 6912 // BIG 6913 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6914 while (btstack_linked_list_iterator_has_next(&it)){ 6915 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6916 switch (big->state){ 6917 case LE_AUDIO_BIG_STATE_CREATE: 6918 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6919 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6920 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6921 hci_send_cmd(&hci_le_create_big, 6922 big->params->big_handle, 6923 big->params->advertising_handle, 6924 big->params->num_bis, 6925 big->params->sdu_interval_us, 6926 big->params->max_sdu, 6927 big->params->max_transport_latency_ms, 6928 big->params->rtn, 6929 big->params->phy, 6930 big->params->packing, 6931 big->params->framing, 6932 big->params->encryption, 6933 big->params->broadcast_code); 6934 return true; 6935 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6936 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6937 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); 6938 return true; 6939 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6940 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6941 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6942 return true; 6943 case LE_AUDIO_BIG_STATE_TERMINATE: 6944 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6945 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6946 return true; 6947 default: 6948 break; 6949 } 6950 } 6951 6952 // BIG Sync 6953 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6954 while (btstack_linked_list_iterator_has_next(&it)){ 6955 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6956 switch (big_sync->state){ 6957 case LE_AUDIO_BIG_STATE_CREATE: 6958 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6959 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6960 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6961 hci_send_cmd(&hci_le_big_create_sync, 6962 big_sync->params->big_handle, 6963 big_sync->params->sync_handle, 6964 big_sync->params->encryption, 6965 big_sync->params->broadcast_code, 6966 big_sync->params->mse, 6967 big_sync->params->big_sync_timeout_10ms, 6968 big_sync->params->num_bis, 6969 big_sync->params->bis_indices); 6970 return true; 6971 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6972 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6973 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); 6974 return true; 6975 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6976 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6977 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6978 return true; 6979 case LE_AUDIO_BIG_STATE_TERMINATE: 6980 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6981 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6982 return true; 6983 default: 6984 break; 6985 } 6986 } 6987 6988 // CIG 6989 bool cig_active; 6990 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6991 while (btstack_linked_list_iterator_has_next(&it)) { 6992 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6993 uint8_t i; 6994 // Set CIG Parameters 6995 uint8_t cis_id[MAX_NR_CIS]; 6996 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6997 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6998 uint8_t phy_c_to_p[MAX_NR_CIS]; 6999 uint8_t phy_p_to_c[MAX_NR_CIS]; 7000 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7001 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7002 switch (cig->state) { 7003 case LE_AUDIO_CIG_STATE_CREATE: 7004 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7005 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7006 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7007 le_audio_cig_params_t * params = cig->params; 7008 for (i = 0; i < params->num_cis; i++) { 7009 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7010 cis_id[i] = cis_params->cis_id; 7011 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7012 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7013 phy_c_to_p[i] = cis_params->phy_c_to_p; 7014 phy_p_to_c[i] = cis_params->phy_p_to_c; 7015 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7016 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7017 } 7018 hci_send_cmd(&hci_le_set_cig_parameters, 7019 cig->cig_id, 7020 params->sdu_interval_c_to_p, 7021 params->sdu_interval_p_to_c, 7022 params->worst_case_sca, 7023 params->packing, 7024 params->framing, 7025 params->max_transport_latency_c_to_p, 7026 params->max_transport_latency_p_to_c, 7027 params->num_cis, 7028 cis_id, 7029 max_sdu_c_to_p, 7030 max_sdu_p_to_c, 7031 phy_c_to_p, 7032 phy_p_to_c, 7033 rtn_c_to_p, 7034 rtn_p_to_c 7035 ); 7036 return true; 7037 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7038 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7039 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7040 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7041 for (i=0;i<cig->num_cis;i++){ 7042 cig->cis_setup_active[i] = true; 7043 } 7044 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7045 return true; 7046 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7047 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7048 // find next path to setup 7049 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7050 if (cig->cis_established[cis_index] == false) { 7051 continue; 7052 } 7053 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7054 bool setup = true; 7055 if (cis_direction == 0){ 7056 // 0 - input - host to controller 7057 // we are central => central to peripheral 7058 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7059 } else { 7060 // 1 - output - controller to host 7061 // we are central => peripheral to central 7062 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7063 } 7064 if (setup){ 7065 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7066 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7067 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7068 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); 7069 return true; 7070 } 7071 cig->state_vars.next_cis++; 7072 } 7073 // emit done 7074 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7075 break; 7076 case LE_AUDIO_CIG_STATE_REMOVE: 7077 // check if CIG Active 7078 cig_active = false; 7079 for (i = 0; i < cig->num_cis; i++) { 7080 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7081 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7082 if (stream != NULL){ 7083 cig_active = true; 7084 break; 7085 } 7086 } 7087 } 7088 if (cig_active == false){ 7089 btstack_linked_list_iterator_remove(&it); 7090 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7091 return true; 7092 } 7093 default: 7094 break; 7095 } 7096 } 7097 7098 // CIS Accept/Reject/Setup ISO Path/Close 7099 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7100 while (btstack_linked_list_iterator_has_next(&it)) { 7101 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7102 hci_con_handle_t con_handle; 7103 switch (iso_stream->state){ 7104 case HCI_ISO_STREAM_W2_ACCEPT: 7105 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7106 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7107 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7108 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7109 return true; 7110 case HCI_ISO_STREAM_W2_REJECT: 7111 con_handle = iso_stream->cis_handle; 7112 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7113 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7114 hci_iso_stream_finalize(iso_stream); 7115 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7116 return true; 7117 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7118 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7119 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7120 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7121 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); 7122 break; 7123 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7124 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7125 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7126 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7127 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); 7128 break; 7129 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7130 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7131 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7132 break; 7133 default: 7134 break; 7135 } 7136 } 7137 7138 return false; 7139 } 7140 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7141 #endif 7142 7143 static bool hci_run_general_pending_commands(void){ 7144 btstack_linked_item_t * it; 7145 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7146 hci_connection_t * connection = (hci_connection_t *) it; 7147 7148 switch(connection->state){ 7149 case SEND_CREATE_CONNECTION: 7150 switch(connection->address_type){ 7151 #ifdef ENABLE_CLASSIC 7152 case BD_ADDR_TYPE_ACL: 7153 log_info("sending hci_create_connection"); 7154 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7155 break; 7156 #endif 7157 default: 7158 #ifdef ENABLE_BLE 7159 #ifdef ENABLE_LE_CENTRAL 7160 log_info("sending hci_le_create_connection"); 7161 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7162 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7163 hci_send_le_create_connection(0, connection->address_type, connection->address); 7164 connection->state = SENT_CREATE_CONNECTION; 7165 #endif 7166 #endif 7167 break; 7168 } 7169 return true; 7170 7171 #ifdef ENABLE_CLASSIC 7172 case RECEIVED_CONNECTION_REQUEST: 7173 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7174 log_info("sending hci_accept_connection_request"); 7175 connection->state = ACCEPTED_CONNECTION_REQUEST; 7176 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7177 return true; 7178 } 7179 break; 7180 #endif 7181 case SEND_DISCONNECT: 7182 connection->state = SENT_DISCONNECT; 7183 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7184 return true; 7185 7186 default: 7187 break; 7188 } 7189 7190 // no further commands if connection is about to get shut down 7191 if (connection->state == SENT_DISCONNECT) continue; 7192 7193 #ifdef ENABLE_CLASSIC 7194 7195 // Handling link key request requires remote supported features 7196 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7197 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7198 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7199 7200 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7201 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7202 if (have_link_key && security_level_sufficient){ 7203 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7204 } else { 7205 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7206 } 7207 return true; 7208 } 7209 7210 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7211 log_info("denying to pin request"); 7212 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7213 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7214 return true; 7215 } 7216 7217 // security assessment requires remote features 7218 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7219 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7220 hci_ssp_assess_security_on_io_cap_request(connection); 7221 // 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 7222 } 7223 7224 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7225 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7226 // set authentication requirements: 7227 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7228 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7229 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7230 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7231 authreq |= 1; 7232 } 7233 bool bonding = hci_stack->bondable; 7234 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7235 // if we have received IO Cap Response, we're in responder role 7236 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7237 if (bonding && !remote_bonding){ 7238 log_info("Remote not bonding, dropping local flag"); 7239 bonding = false; 7240 } 7241 } 7242 if (bonding){ 7243 if (connection->bonding_flags & BONDING_DEDICATED){ 7244 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7245 } else { 7246 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7247 } 7248 } 7249 uint8_t have_oob_data = 0; 7250 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7251 if (connection->classic_oob_c_192 != NULL){ 7252 have_oob_data |= 1; 7253 } 7254 if (connection->classic_oob_c_256 != NULL){ 7255 have_oob_data |= 2; 7256 } 7257 #endif 7258 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7259 return true; 7260 } 7261 7262 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7263 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7264 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7265 return true; 7266 } 7267 7268 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7269 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7270 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7271 const uint8_t zero[16] = { 0 }; 7272 const uint8_t * r_192 = zero; 7273 const uint8_t * c_192 = zero; 7274 const uint8_t * r_256 = zero; 7275 const uint8_t * c_256 = zero; 7276 // verify P-256 OOB 7277 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7278 c_256 = connection->classic_oob_c_256; 7279 if (connection->classic_oob_r_256 != NULL) { 7280 r_256 = connection->classic_oob_r_256; 7281 } 7282 } 7283 // verify P-192 OOB 7284 if ((connection->classic_oob_c_192 != NULL)) { 7285 c_192 = connection->classic_oob_c_192; 7286 if (connection->classic_oob_r_192 != NULL) { 7287 r_192 = connection->classic_oob_r_192; 7288 } 7289 } 7290 7291 // assess security 7292 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7293 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7294 if (need_level_4 && !can_reach_level_4){ 7295 log_info("Level 4 required, but not possible -> abort"); 7296 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7297 // send oob negative reply 7298 c_256 = NULL; 7299 c_192 = NULL; 7300 } 7301 7302 // Reply 7303 if (c_256 != zero) { 7304 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7305 } else if (c_192 != zero){ 7306 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7307 } else { 7308 hci_stack->classic_oob_con_handle = connection->con_handle; 7309 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7310 } 7311 return true; 7312 } 7313 #endif 7314 7315 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7316 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7317 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7318 return true; 7319 } 7320 7321 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7322 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7323 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7324 return true; 7325 } 7326 7327 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7328 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7329 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7330 return true; 7331 } 7332 7333 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7334 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7335 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7336 connection->state = SENT_DISCONNECT; 7337 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7338 return true; 7339 } 7340 7341 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7342 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7343 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7344 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7345 return true; 7346 } 7347 7348 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7349 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7350 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7351 return true; 7352 } 7353 7354 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7355 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7356 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7357 return true; 7358 } 7359 7360 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7361 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7362 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7363 return true; 7364 } 7365 7366 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7367 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7368 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7369 return true; 7370 } 7371 7372 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7373 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7374 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7375 return true; 7376 } 7377 #endif 7378 7379 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7380 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7381 #ifdef ENABLE_CLASSIC 7382 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7383 #endif 7384 if (connection->state != SENT_DISCONNECT){ 7385 connection->state = SENT_DISCONNECT; 7386 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7387 return true; 7388 } 7389 } 7390 7391 #ifdef ENABLE_CLASSIC 7392 uint16_t sniff_min_interval; 7393 switch (connection->sniff_min_interval){ 7394 case 0: 7395 break; 7396 case 0xffff: 7397 connection->sniff_min_interval = 0; 7398 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7399 return true; 7400 default: 7401 sniff_min_interval = connection->sniff_min_interval; 7402 connection->sniff_min_interval = 0; 7403 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7404 return true; 7405 } 7406 7407 if (connection->sniff_subrating_max_latency != 0xffff){ 7408 uint16_t max_latency = connection->sniff_subrating_max_latency; 7409 connection->sniff_subrating_max_latency = 0; 7410 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7411 return true; 7412 } 7413 7414 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7415 uint8_t service_type = (uint8_t) connection->qos_service_type; 7416 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7417 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); 7418 return true; 7419 } 7420 7421 if (connection->request_role != HCI_ROLE_INVALID){ 7422 hci_role_t role = connection->request_role; 7423 connection->request_role = HCI_ROLE_INVALID; 7424 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7425 return true; 7426 } 7427 #endif 7428 7429 if (connection->gap_connection_tasks != 0){ 7430 #ifdef ENABLE_CLASSIC 7431 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7432 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7433 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7434 return true; 7435 } 7436 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7437 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7438 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7439 return true; 7440 } 7441 #endif 7442 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7443 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7444 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7445 return true; 7446 } 7447 #ifdef ENABLE_BLE 7448 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7449 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7450 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7451 return true; 7452 } 7453 #endif 7454 } 7455 7456 #ifdef ENABLE_BLE 7457 switch (connection->le_con_parameter_update_state){ 7458 // response to L2CAP CON PARAMETER UPDATE REQUEST 7459 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7460 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7461 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7462 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7463 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7464 return true; 7465 case CON_PARAMETER_UPDATE_REPLY: 7466 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7467 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7468 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7469 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7470 return true; 7471 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7472 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7473 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7474 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7475 return true; 7476 default: 7477 break; 7478 } 7479 if (connection->le_phy_update_all_phys != 0xffu){ 7480 uint8_t all_phys = connection->le_phy_update_all_phys; 7481 connection->le_phy_update_all_phys = 0xff; 7482 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); 7483 return true; 7484 } 7485 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7486 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7487 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7488 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7489 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7490 return true; 7491 } 7492 if (connection->le_past_advertising_handle != 0xff){ 7493 uint8_t advertising_handle = connection->le_past_advertising_handle; 7494 connection->le_past_advertising_handle = 0xff; 7495 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7496 return true; 7497 } 7498 #endif 7499 #endif 7500 } 7501 return false; 7502 } 7503 7504 static void hci_run(void){ 7505 7506 // stack state sub statemachines 7507 switch (hci_stack->state) { 7508 case HCI_STATE_INITIALIZING: 7509 hci_initializing_run(); 7510 break; 7511 case HCI_STATE_HALTING: 7512 hci_halting_run(); 7513 break; 7514 case HCI_STATE_FALLING_ASLEEP: 7515 hci_falling_asleep_run(); 7516 break; 7517 default: 7518 break; 7519 } 7520 7521 // allow to run after initialization to working transition 7522 if (hci_stack->state != HCI_STATE_WORKING){ 7523 return; 7524 } 7525 7526 bool done; 7527 7528 // send continuation fragments first, as they block the prepared packet buffer 7529 done = hci_run_acl_fragments(); 7530 if (done) return; 7531 7532 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7533 done = hci_run_iso_fragments(); 7534 if (done) return; 7535 #endif 7536 7537 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7538 // send host num completed packets next as they don't require num_cmd_packets > 0 7539 if (!hci_can_send_comand_packet_transport()) return; 7540 if (hci_stack->host_completed_packets){ 7541 hci_host_num_completed_packets(); 7542 return; 7543 } 7544 #endif 7545 7546 if (!hci_can_send_command_packet_now()) return; 7547 7548 // global/non-connection oriented commands 7549 7550 7551 #ifdef ENABLE_CLASSIC 7552 // general gap classic 7553 done = hci_run_general_gap_classic(); 7554 if (done) return; 7555 #endif 7556 7557 #ifdef ENABLE_BLE 7558 // general gap le 7559 done = hci_run_general_gap_le(); 7560 if (done) return; 7561 7562 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7563 // ISO related tasks, e.g. BIG create/terminate/sync 7564 done = hci_run_iso_tasks(); 7565 if (done) return; 7566 #endif 7567 #endif 7568 7569 // send pending HCI commands 7570 hci_run_general_pending_commands(); 7571 } 7572 7573 #ifdef ENABLE_CLASSIC 7574 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7575 // bits 6-9 are 'don't use' 7576 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7577 7578 // restrict packet types to local and remote supported 7579 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7580 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7581 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7582 } 7583 #endif 7584 7585 // funnel for sending cmd packet using single outgoing buffer 7586 static uint8_t hci_send_prepared_cmd_packet() { 7587 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7588 // cache opcode 7589 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7590 // get size 7591 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7592 // send packet 7593 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7594 // release packet buffer on error or for synchronous transport implementations 7595 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7596 hci_release_packet_buffer(); 7597 } 7598 return status; 7599 } 7600 7601 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7602 // house-keeping 7603 7604 #ifdef ENABLE_CLASSIC 7605 bd_addr_t addr; 7606 hci_connection_t * conn; 7607 #endif 7608 #ifdef ENABLE_LE_CENTRAL 7609 uint8_t initiator_filter_policy; 7610 #endif 7611 7612 uint16_t opcode = little_endian_read_16(packet, 0); 7613 switch (opcode) { 7614 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7615 hci_stack->loopback_mode = packet[3]; 7616 break; 7617 7618 #ifdef ENABLE_CLASSIC 7619 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7620 reverse_bd_addr(&packet[3], addr); 7621 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7622 7623 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7624 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7625 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7626 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7627 } 7628 7629 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7630 if (!conn) { 7631 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7632 if (!conn) { 7633 // notify client that alloc failed 7634 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7635 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7636 } 7637 conn->state = SEND_CREATE_CONNECTION; 7638 } 7639 7640 log_info("conn state %u", conn->state); 7641 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7642 switch (conn->state) { 7643 // if connection active exists 7644 case OPEN: 7645 // and OPEN, emit connection complete command 7646 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7647 // packet not sent to controller 7648 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7649 case RECEIVED_DISCONNECTION_COMPLETE: 7650 // create connection triggered in disconnect complete event, let's do it now 7651 break; 7652 case SEND_CREATE_CONNECTION: 7653 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7654 if (hci_classic_operation_active()){ 7655 return ERROR_CODE_SUCCESS; 7656 } 7657 #endif 7658 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7659 break; 7660 default: 7661 // otherwise, just ignore as it is already in the open process 7662 // packet not sent to controller 7663 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7664 } 7665 conn->state = SENT_CREATE_CONNECTION; 7666 7667 // track outgoing connection 7668 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7669 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7670 break; 7671 7672 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7673 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7674 if (conn == NULL) { 7675 // neither SCO nor ACL connection for con handle 7676 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7677 } else { 7678 uint16_t remote_supported_sco_packets; 7679 switch (conn->address_type){ 7680 case BD_ADDR_TYPE_ACL: 7681 // assert SCO connection does not exit 7682 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7683 return ERROR_CODE_COMMAND_DISALLOWED; 7684 } 7685 // cache remote sco packet types 7686 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7687 7688 // allocate connection struct 7689 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7690 HCI_ROLE_MASTER); 7691 if (!conn) { 7692 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7693 } 7694 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7695 break; 7696 case BD_ADDR_TYPE_SCO: 7697 // update of existing SCO connection 7698 break; 7699 default: 7700 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7701 } 7702 } 7703 7704 // conn refers to hci connection of type sco now 7705 7706 conn->state = SENT_CREATE_CONNECTION; 7707 7708 // track outgoing connection to handle command status with error 7709 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7710 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7711 7712 // setup_synchronous_connection? Voice setting at offset 22 7713 // TODO: compare to current setting if sco connection already active 7714 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7715 7716 // derive sco payload length from packet types 7717 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7718 break; 7719 7720 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7721 // get SCO connection 7722 reverse_bd_addr(&packet[3], addr); 7723 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7724 if (conn == NULL){ 7725 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7726 } 7727 7728 conn->state = ACCEPTED_CONNECTION_REQUEST; 7729 7730 // track outgoing connection to handle command status with error 7731 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7732 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7733 7734 // accept_synchronous_connection? Voice setting at offset 18 7735 // TODO: compare to current setting if sco connection already active 7736 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7737 7738 // derive sco payload length from packet types 7739 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7740 break; 7741 #endif 7742 7743 #ifdef ENABLE_BLE 7744 #ifdef ENABLE_LE_CENTRAL 7745 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7746 // white list used? 7747 initiator_filter_policy = packet[7]; 7748 switch (initiator_filter_policy) { 7749 case 0: 7750 // whitelist not used 7751 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7752 break; 7753 case 1: 7754 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7755 break; 7756 default: 7757 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7758 break; 7759 } 7760 // track outgoing connection 7761 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7762 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7763 break; 7764 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7765 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7766 // white list used? 7767 initiator_filter_policy = packet[3]; 7768 switch (initiator_filter_policy) { 7769 case 0: 7770 // whitelist not used 7771 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7772 break; 7773 case 1: 7774 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7775 break; 7776 default: 7777 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7778 break; 7779 } 7780 // track outgoing connection 7781 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7782 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7783 break; 7784 #endif 7785 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7786 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7787 break; 7788 #endif 7789 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7790 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7791 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7792 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7793 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7794 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7795 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7796 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7797 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7798 case HCI_OPCODE_HCI_LE_READ_PHY: 7799 case HCI_OPCODE_HCI_LE_SET_PHY: 7800 // conection handle is first command parameter 7801 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7802 break; 7803 #endif 7804 #endif /* ENABLE_BLE */ 7805 default: 7806 break; 7807 } 7808 7809 hci_stack->num_cmd_packets--; 7810 7811 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7812 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7813 if (err != 0){ 7814 return ERROR_CODE_HARDWARE_FAILURE; 7815 } 7816 return ERROR_CODE_SUCCESS; 7817 } 7818 7819 // disconnect because of security block 7820 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7821 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7822 if (!connection) return; 7823 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7824 } 7825 7826 7827 // Configure Secure Simple Pairing 7828 7829 #ifdef ENABLE_CLASSIC 7830 7831 // enable will enable SSP during init 7832 void gap_ssp_set_enable(int enable){ 7833 hci_stack->ssp_enable = enable; 7834 } 7835 7836 static int hci_local_ssp_activated(void){ 7837 return gap_ssp_supported() && hci_stack->ssp_enable; 7838 } 7839 7840 // if set, BTstack will respond to io capability request using authentication requirement 7841 void gap_ssp_set_io_capability(int io_capability){ 7842 hci_stack->ssp_io_capability = io_capability; 7843 } 7844 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7845 hci_stack->ssp_authentication_requirement = authentication_requirement; 7846 } 7847 7848 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7849 void gap_ssp_set_auto_accept(int auto_accept){ 7850 hci_stack->ssp_auto_accept = auto_accept; 7851 } 7852 7853 void gap_secure_connections_enable(bool enable){ 7854 hci_stack->secure_connections_enable = enable; 7855 } 7856 bool gap_secure_connections_active(void){ 7857 return hci_stack->secure_connections_active; 7858 } 7859 7860 #endif 7861 7862 // va_list part of hci_send_cmd 7863 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7864 if (!hci_can_send_command_packet_now()){ 7865 log_error("hci_send_cmd called but cannot send packet now"); 7866 return ERROR_CODE_COMMAND_DISALLOWED; 7867 } 7868 7869 hci_reserve_packet_buffer(); 7870 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7871 return hci_send_prepared_cmd_packet(); 7872 } 7873 7874 /** 7875 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7876 */ 7877 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7878 va_list argptr; 7879 va_start(argptr, cmd); 7880 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7881 va_end(argptr); 7882 return status; 7883 } 7884 7885 // Create various non-HCI events. 7886 // TODO: generalize, use table similar to hci_create_command 7887 7888 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7889 // dump packet 7890 if (dump) { 7891 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7892 } 7893 7894 // dispatch to all event handlers 7895 btstack_linked_list_iterator_t it; 7896 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7897 while (btstack_linked_list_iterator_has_next(&it)){ 7898 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7899 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7900 } 7901 } 7902 7903 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7904 if (!hci_stack->acl_packet_handler) return; 7905 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7906 } 7907 7908 #ifdef ENABLE_CLASSIC 7909 static void hci_notify_if_sco_can_send_now(void){ 7910 // notify SCO sender if waiting 7911 if (!hci_stack->sco_waiting_for_can_send_now) return; 7912 if (hci_can_send_sco_packet_now()){ 7913 hci_stack->sco_waiting_for_can_send_now = 0; 7914 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7915 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7916 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7917 } 7918 } 7919 7920 // parsing end emitting has been merged to reduce code size 7921 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7922 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7923 7924 uint8_t * eir_data; 7925 ad_context_t context; 7926 const uint8_t * name; 7927 uint8_t name_len; 7928 7929 if (size < 3) return; 7930 7931 int event_type = hci_event_packet_get_type(packet); 7932 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7933 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7934 7935 switch (event_type){ 7936 case HCI_EVENT_INQUIRY_RESULT: 7937 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7938 if (size != (3 + (num_responses * 14))) return; 7939 break; 7940 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7941 if (size != 257) return; 7942 if (num_responses != 1) return; 7943 break; 7944 default: 7945 return; 7946 } 7947 7948 // event[1] is set at the end 7949 int i; 7950 for (i=0; i<num_responses;i++){ 7951 memset(event, 0, sizeof(event)); 7952 event[0] = GAP_EVENT_INQUIRY_RESULT; 7953 uint8_t event_size = 27; // if name is not set by EIR 7954 7955 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7956 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7957 (void)memcpy(&event[9], 7958 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7959 3); // class of device 7960 (void)memcpy(&event[12], 7961 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7962 2); // clock offset 7963 7964 switch (event_type){ 7965 case HCI_EVENT_INQUIRY_RESULT: 7966 // 14,15,16,17 = 0, size 18 7967 break; 7968 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7969 event[14] = 1; 7970 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7971 // 16,17 = 0, size 18 7972 break; 7973 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7974 event[14] = 1; 7975 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7976 // EIR packets only contain a single inquiry response 7977 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7978 name = NULL; 7979 // Iterate over EIR data 7980 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7981 uint8_t data_type = ad_iterator_get_data_type(&context); 7982 uint8_t data_size = ad_iterator_get_data_len(&context); 7983 const uint8_t * data = ad_iterator_get_data(&context); 7984 // Prefer Complete Local Name over Shortened Local Name 7985 switch (data_type){ 7986 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7987 if (name) continue; 7988 /* fall through */ 7989 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7990 name = data; 7991 name_len = data_size; 7992 break; 7993 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7994 if (data_size != 8) break; 7995 event[16] = 1; 7996 memcpy(&event[17], data, 8); 7997 break; 7998 default: 7999 break; 8000 } 8001 } 8002 if (name){ 8003 event[25] = 1; 8004 // truncate name if needed 8005 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8006 event[26] = len; 8007 (void)memcpy(&event[27], name, len); 8008 event_size += len; 8009 } 8010 break; 8011 default: 8012 return; 8013 } 8014 event[1] = event_size - 2; 8015 hci_emit_event(event, event_size, 1); 8016 } 8017 } 8018 #endif 8019 8020 void hci_emit_state(void){ 8021 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8022 uint8_t event[3]; 8023 event[0] = BTSTACK_EVENT_STATE; 8024 event[1] = sizeof(event) - 2u; 8025 event[2] = hci_stack->state; 8026 hci_emit_event(event, sizeof(event), 1); 8027 } 8028 8029 #ifdef ENABLE_CLASSIC 8030 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8031 uint8_t event[13]; 8032 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8033 event[1] = sizeof(event) - 2; 8034 event[2] = status; 8035 little_endian_store_16(event, 3, con_handle); 8036 reverse_bd_addr(address, &event[5]); 8037 event[11] = 1; // ACL connection 8038 event[12] = 0; // encryption disabled 8039 hci_emit_event(event, sizeof(event), 1); 8040 } 8041 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8042 if (disable_l2cap_timeouts) return; 8043 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8044 uint8_t event[4]; 8045 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8046 event[1] = sizeof(event) - 2; 8047 little_endian_store_16(event, 2, conn->con_handle); 8048 hci_emit_event(event, sizeof(event), 1); 8049 } 8050 #endif 8051 8052 #ifdef ENABLE_BLE 8053 #ifdef ENABLE_LE_CENTRAL 8054 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){ 8055 uint8_t hci_event[21]; 8056 hci_event[0] = HCI_EVENT_LE_META; 8057 hci_event[1] = sizeof(hci_event) - 2u; 8058 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8059 hci_event[3] = status; 8060 little_endian_store_16(hci_event, 4, con_handle); 8061 hci_event[6] = 0; // TODO: role 8062 hci_event[7] = address_type; 8063 reverse_bd_addr(address, &hci_event[8]); 8064 little_endian_store_16(hci_event, 14, 0); // interval 8065 little_endian_store_16(hci_event, 16, 0); // latency 8066 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8067 hci_event[20] = 0; // master clock accuracy 8068 hci_emit_event(hci_event, sizeof(hci_event), 1); 8069 // emit GAP event, too 8070 uint8_t gap_event[36]; 8071 hci_create_gap_connection_complete_event(hci_event, gap_event); 8072 hci_emit_event(gap_event, sizeof(gap_event), 1); 8073 } 8074 #endif 8075 #endif 8076 8077 static void hci_emit_transport_packet_sent(void){ 8078 // notify upper stack that it might be possible to send again 8079 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8080 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8081 } 8082 8083 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8084 uint8_t event[6]; 8085 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8086 event[1] = sizeof(event) - 2u; 8087 event[2] = 0; // status = OK 8088 little_endian_store_16(event, 3, con_handle); 8089 event[5] = reason; 8090 hci_emit_event(event, sizeof(event), 1); 8091 } 8092 8093 static void hci_emit_nr_connections_changed(void){ 8094 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8095 uint8_t event[3]; 8096 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8097 event[1] = sizeof(event) - 2u; 8098 event[2] = nr_hci_connections(); 8099 hci_emit_event(event, sizeof(event), 1); 8100 } 8101 8102 static void hci_emit_hci_open_failed(void){ 8103 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8104 uint8_t event[2]; 8105 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8106 event[1] = sizeof(event) - 2u; 8107 hci_emit_event(event, sizeof(event), 1); 8108 } 8109 8110 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8111 log_info("hci_emit_dedicated_bonding_result %u ", status); 8112 uint8_t event[9]; 8113 int pos = 0; 8114 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8115 event[pos++] = sizeof(event) - 2u; 8116 event[pos++] = status; 8117 reverse_bd_addr(address, &event[pos]); 8118 hci_emit_event(event, sizeof(event), 1); 8119 } 8120 8121 8122 #ifdef ENABLE_CLASSIC 8123 8124 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8125 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8126 uint8_t event[5]; 8127 int pos = 0; 8128 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8129 event[pos++] = sizeof(event) - 2; 8130 little_endian_store_16(event, 2, con_handle); 8131 pos += 2; 8132 event[pos++] = level; 8133 hci_emit_event(event, sizeof(event), 1); 8134 } 8135 8136 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8137 if (!connection) return LEVEL_0; 8138 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8139 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8140 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8141 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8142 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8143 // LEVEL 4 always requires 128 bit encrytion key size 8144 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8145 security_level = LEVEL_3; 8146 } 8147 return security_level; 8148 } 8149 8150 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8151 uint8_t event[4]; 8152 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8153 event[1] = sizeof(event) - 2; 8154 event[2] = discoverable; 8155 event[3] = connectable; 8156 hci_emit_event(event, sizeof(event), 1); 8157 } 8158 8159 // query if remote side supports eSCO 8160 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8161 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8162 if (!connection) return false; 8163 return (connection->remote_supported_features[0] & 1) != 0; 8164 } 8165 8166 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8167 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8168 if (!connection) return 0; 8169 return connection->remote_supported_sco_packets; 8170 } 8171 8172 static bool hci_ssp_supported(hci_connection_t * connection){ 8173 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8174 return (connection->bonding_flags & mask) == mask; 8175 } 8176 8177 // query if remote side supports SSP 8178 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8179 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8180 if (!connection) return false; 8181 return hci_ssp_supported(connection) ? 1 : 0; 8182 } 8183 8184 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8185 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8186 } 8187 8188 /** 8189 * Check if remote supported features query has completed 8190 */ 8191 bool hci_remote_features_available(hci_con_handle_t handle){ 8192 hci_connection_t * connection = hci_connection_for_handle(handle); 8193 if (!connection) return false; 8194 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8195 } 8196 8197 /** 8198 * Trigger remote supported features query 8199 */ 8200 8201 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8202 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8203 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8204 } 8205 } 8206 8207 void hci_remote_features_query(hci_con_handle_t con_handle){ 8208 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8209 if (!connection) return; 8210 hci_trigger_remote_features_for_connection(connection); 8211 hci_run(); 8212 } 8213 8214 // GAP API 8215 /** 8216 * @bbrief enable/disable bonding. default is enabled 8217 * @praram enabled 8218 */ 8219 void gap_set_bondable_mode(int enable){ 8220 hci_stack->bondable = enable ? 1 : 0; 8221 } 8222 /** 8223 * @brief Get bondable mode. 8224 * @return 1 if bondable 8225 */ 8226 int gap_get_bondable_mode(void){ 8227 return hci_stack->bondable; 8228 } 8229 8230 /** 8231 * @brief map link keys to security levels 8232 */ 8233 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8234 switch (link_key_type){ 8235 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8236 return LEVEL_4; 8237 case COMBINATION_KEY: 8238 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8239 return LEVEL_3; 8240 default: 8241 return LEVEL_2; 8242 } 8243 } 8244 8245 /** 8246 * @brief map link keys to secure connection yes/no 8247 */ 8248 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8249 switch (link_key_type){ 8250 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8251 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8252 return true; 8253 default: 8254 return false; 8255 } 8256 } 8257 8258 /** 8259 * @brief map link keys to authenticated 8260 */ 8261 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8262 switch (link_key_type){ 8263 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8264 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8265 return true; 8266 default: 8267 return false; 8268 } 8269 } 8270 8271 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8272 log_info("gap_mitm_protection_required_for_security_level %u", level); 8273 return level > LEVEL_2; 8274 } 8275 8276 /** 8277 * @brief get current security level 8278 */ 8279 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8280 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8281 if (!connection) return LEVEL_0; 8282 return gap_security_level_for_connection(connection); 8283 } 8284 8285 /** 8286 * @brief request connection to device to 8287 * @result GAP_AUTHENTICATION_RESULT 8288 */ 8289 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8290 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8291 if (!connection){ 8292 hci_emit_security_level(con_handle, LEVEL_0); 8293 return; 8294 } 8295 8296 btstack_assert(hci_is_le_connection(connection) == false); 8297 8298 // 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) 8299 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8300 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8301 requested_level = LEVEL_4; 8302 } 8303 8304 gap_security_level_t current_level = gap_security_level(con_handle); 8305 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8306 requested_level, connection->requested_security_level, current_level); 8307 8308 // authentication active if authentication request was sent or planned level > 0 8309 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8310 if (authentication_active){ 8311 // authentication already active 8312 if (connection->requested_security_level < requested_level){ 8313 // increase requested level as new level is higher 8314 // TODO: handle re-authentication when done 8315 connection->requested_security_level = requested_level; 8316 } 8317 } else { 8318 // no request active, notify if security sufficient 8319 if (requested_level <= current_level){ 8320 hci_emit_security_level(con_handle, current_level); 8321 return; 8322 } 8323 8324 // store request 8325 connection->requested_security_level = requested_level; 8326 8327 // start to authenticate connection 8328 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8329 8330 // request remote features if not already active, also trigger hci_run 8331 hci_remote_features_query(con_handle); 8332 } 8333 } 8334 8335 /** 8336 * @brief start dedicated bonding with device. disconnect after bonding 8337 * @param device 8338 * @param request MITM protection 8339 * @result GAP_DEDICATED_BONDING_COMPLETE 8340 */ 8341 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8342 8343 // create connection state machine 8344 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8345 8346 if (!connection){ 8347 return BTSTACK_MEMORY_ALLOC_FAILED; 8348 } 8349 8350 // delete link key 8351 gap_drop_link_key_for_bd_addr(device); 8352 8353 // configure LEVEL_2/3, dedicated bonding 8354 connection->state = SEND_CREATE_CONNECTION; 8355 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8356 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8357 connection->bonding_flags = BONDING_DEDICATED; 8358 8359 hci_run(); 8360 8361 return 0; 8362 } 8363 8364 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8365 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8366 if (connection == NULL){ 8367 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8368 } 8369 if (defer){ 8370 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8371 } else { 8372 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8373 // trigger disconnect 8374 hci_run(); 8375 } 8376 return ERROR_CODE_SUCCESS; 8377 } 8378 8379 void gap_set_local_name(const char * local_name){ 8380 hci_stack->local_name = local_name; 8381 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8382 // also update EIR if not set by user 8383 if (hci_stack->eir_data == NULL){ 8384 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8385 } 8386 hci_run(); 8387 } 8388 #endif 8389 8390 8391 #ifdef ENABLE_BLE 8392 8393 #ifdef ENABLE_LE_CENTRAL 8394 void gap_start_scan(void){ 8395 hci_stack->le_scanning_enabled = true; 8396 hci_run(); 8397 } 8398 8399 void gap_stop_scan(void){ 8400 hci_stack->le_scanning_enabled = false; 8401 hci_run(); 8402 } 8403 8404 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8405 hci_stack->le_scan_type = scan_type; 8406 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8407 hci_stack->le_scan_interval = scan_interval; 8408 hci_stack->le_scan_window = scan_window; 8409 hci_stack->le_scanning_param_update = true; 8410 hci_run(); 8411 } 8412 8413 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8414 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8415 } 8416 8417 void gap_set_scan_duplicate_filter(bool enabled){ 8418 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8419 } 8420 8421 void gap_set_scan_phys(uint8_t phys){ 8422 // LE Coded and LE 1M PHY 8423 hci_stack->le_scan_phys = phys & 0x05; 8424 } 8425 8426 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8427 // disallow le connection if outgoing already active 8428 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8429 log_error("le connect already active"); 8430 return ERROR_CODE_COMMAND_DISALLOWED; 8431 } 8432 8433 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8434 if (conn == NULL) { 8435 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8436 if (conn == false){ 8437 // alloc failed 8438 log_info("gap_connect: failed to alloc hci_connection_t"); 8439 return BTSTACK_MEMORY_ALLOC_FAILED; 8440 } 8441 } else { 8442 switch (conn->state) { 8443 case RECEIVED_DISCONNECTION_COMPLETE: 8444 // connection was just disconnected, reset state and allow re-connect 8445 conn->role = HCI_ROLE_MASTER; 8446 break; 8447 default: 8448 return ERROR_CODE_COMMAND_DISALLOWED; 8449 } 8450 } 8451 8452 // set le connecting state 8453 if (hci_is_le_connection_type(addr_type)){ 8454 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8455 } 8456 8457 // trigger connect 8458 log_info("gap_connect: send create connection next"); 8459 conn->state = SEND_CREATE_CONNECTION; 8460 hci_run(); 8461 return ERROR_CODE_SUCCESS; 8462 } 8463 8464 // @assumption: only a single outgoing LE Connection exists 8465 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8466 btstack_linked_item_t *it; 8467 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8468 hci_connection_t * conn = (hci_connection_t *) it; 8469 if (hci_is_le_connection(conn)){ 8470 switch (conn->state){ 8471 case SEND_CREATE_CONNECTION: 8472 case SENT_CREATE_CONNECTION: 8473 return conn; 8474 default: 8475 break; 8476 }; 8477 } 8478 } 8479 return NULL; 8480 } 8481 8482 uint8_t gap_connect_cancel(void){ 8483 hci_connection_t * conn; 8484 switch (hci_stack->le_connecting_request){ 8485 case LE_CONNECTING_IDLE: 8486 break; 8487 case LE_CONNECTING_WHITELIST: 8488 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8489 hci_run(); 8490 break; 8491 case LE_CONNECTING_DIRECT: 8492 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8493 conn = gap_get_outgoing_le_connection(); 8494 if (conn == NULL){ 8495 hci_run(); 8496 } else { 8497 switch (conn->state){ 8498 case SEND_CREATE_CONNECTION: 8499 // skip sending create connection and emit event instead 8500 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8501 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8502 btstack_memory_hci_connection_free( conn ); 8503 break; 8504 case SENT_CREATE_CONNECTION: 8505 // let hci_run_general_gap_le cancel outgoing connection 8506 hci_run(); 8507 break; 8508 default: 8509 break; 8510 } 8511 } 8512 break; 8513 default: 8514 btstack_unreachable(); 8515 break; 8516 } 8517 return ERROR_CODE_SUCCESS; 8518 } 8519 8520 /** 8521 * @brief Set connection parameters for outgoing connections 8522 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8523 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8524 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8525 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8526 * @param conn_latency, default: 4 8527 * @param supervision_timeout (unit: 10ms), default: 720 ms 8528 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8529 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8530 */ 8531 8532 void gap_set_connection_phys(uint8_t phys){ 8533 // LE Coded, LE 1M, LE 2M PHY 8534 hci_stack->le_connection_phys = phys & 7; 8535 } 8536 8537 #endif 8538 8539 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8540 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8541 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8542 hci_stack->le_connection_scan_interval = conn_scan_interval; 8543 hci_stack->le_connection_scan_window = conn_scan_window; 8544 hci_stack->le_connection_interval_min = conn_interval_min; 8545 hci_stack->le_connection_interval_max = conn_interval_max; 8546 hci_stack->le_connection_latency = conn_latency; 8547 hci_stack->le_supervision_timeout = supervision_timeout; 8548 hci_stack->le_minimum_ce_length = min_ce_length; 8549 hci_stack->le_maximum_ce_length = max_ce_length; 8550 } 8551 8552 /** 8553 * @brief Updates the connection parameters for a given LE connection 8554 * @param handle 8555 * @param conn_interval_min (unit: 1.25ms) 8556 * @param conn_interval_max (unit: 1.25ms) 8557 * @param conn_latency 8558 * @param supervision_timeout (unit: 10ms) 8559 * @return 0 if ok 8560 */ 8561 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8562 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8563 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8564 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8565 connection->le_conn_interval_min = conn_interval_min; 8566 connection->le_conn_interval_max = conn_interval_max; 8567 connection->le_conn_latency = conn_latency; 8568 connection->le_supervision_timeout = supervision_timeout; 8569 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8570 hci_run(); 8571 return 0; 8572 } 8573 8574 /** 8575 * @brief Request an update of the connection parameter for a given LE connection 8576 * @param handle 8577 * @param conn_interval_min (unit: 1.25ms) 8578 * @param conn_interval_max (unit: 1.25ms) 8579 * @param conn_latency 8580 * @param supervision_timeout (unit: 10ms) 8581 * @return 0 if ok 8582 */ 8583 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8584 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8585 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8586 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8587 connection->le_conn_interval_min = conn_interval_min; 8588 connection->le_conn_interval_max = conn_interval_max; 8589 connection->le_conn_latency = conn_latency; 8590 connection->le_supervision_timeout = supervision_timeout; 8591 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8592 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8593 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8594 return 0; 8595 } 8596 8597 #ifdef ENABLE_LE_PERIPHERAL 8598 8599 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8600 static void hci_assert_advertisement_set_0_ready(void){ 8601 // force advertising set creation for legacy LE Advertising 8602 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8603 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8604 } 8605 } 8606 #endif 8607 8608 /** 8609 * @brief Set Advertisement Data 8610 * @param advertising_data_length 8611 * @param advertising_data (max 31 octets) 8612 * @note data is not copied, pointer has to stay valid 8613 */ 8614 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8615 hci_stack->le_advertisements_data_len = advertising_data_length; 8616 hci_stack->le_advertisements_data = advertising_data; 8617 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8618 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8619 hci_assert_advertisement_set_0_ready(); 8620 #endif 8621 hci_run(); 8622 } 8623 8624 /** 8625 * @brief Set Scan Response Data 8626 * @param advertising_data_length 8627 * @param advertising_data (max 31 octets) 8628 * @note data is not copied, pointer has to stay valid 8629 */ 8630 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8631 hci_stack->le_scan_response_data_len = scan_response_data_length; 8632 hci_stack->le_scan_response_data = scan_response_data; 8633 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8634 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8635 hci_assert_advertisement_set_0_ready(); 8636 #endif 8637 hci_run(); 8638 } 8639 8640 /** 8641 * @brief Set Advertisement Parameters 8642 * @param adv_int_min 8643 * @param adv_int_max 8644 * @param adv_type 8645 * @param direct_address_type 8646 * @param direct_address 8647 * @param channel_map 8648 * @param filter_policy 8649 * 8650 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8651 */ 8652 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8653 uint8_t direct_address_typ, bd_addr_t direct_address, 8654 uint8_t channel_map, uint8_t filter_policy) { 8655 8656 hci_stack->le_advertisements_interval_min = adv_int_min; 8657 hci_stack->le_advertisements_interval_max = adv_int_max; 8658 hci_stack->le_advertisements_type = adv_type; 8659 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8660 hci_stack->le_advertisements_channel_map = channel_map; 8661 hci_stack->le_advertisements_filter_policy = filter_policy; 8662 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8663 6); 8664 8665 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8666 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8667 hci_run(); 8668 } 8669 8670 /** 8671 * @brief Enable/Disable Advertisements 8672 * @param enabled 8673 */ 8674 void gap_advertisements_enable(int enabled){ 8675 if (enabled == 0){ 8676 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8677 } else { 8678 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8679 } 8680 hci_update_advertisements_enabled_for_current_roles(); 8681 hci_run(); 8682 } 8683 8684 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8685 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8686 btstack_linked_list_iterator_t it; 8687 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8688 while (btstack_linked_list_iterator_has_next(&it)){ 8689 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8690 if ( item->advertising_handle == advertising_handle ) { 8691 return item; 8692 } 8693 } 8694 return NULL; 8695 } 8696 8697 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8698 hci_stack->le_resolvable_private_address_update_s = update_s; 8699 hci_run(); 8700 return ERROR_CODE_SUCCESS; 8701 } 8702 8703 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8704 // find free advertisement handle 8705 uint8_t advertisement_handle; 8706 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8707 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8708 } 8709 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8710 // clear 8711 memset(storage, 0, sizeof(le_advertising_set_t)); 8712 // copy params 8713 storage->advertising_handle = advertisement_handle; 8714 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8715 // add to list 8716 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8717 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8718 *out_advertising_handle = advertisement_handle; 8719 // set tasks and start 8720 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8721 hci_run(); 8722 return ERROR_CODE_SUCCESS; 8723 } 8724 8725 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8726 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8727 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8728 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8729 // set tasks and start 8730 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8731 hci_run(); 8732 return ERROR_CODE_SUCCESS; 8733 } 8734 8735 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8736 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8737 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8738 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8739 return ERROR_CODE_SUCCESS; 8740 } 8741 8742 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 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_set->random_address, random_address, 6); 8746 // set tasks and start 8747 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8748 hci_run(); 8749 return ERROR_CODE_SUCCESS; 8750 } 8751 8752 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8753 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8754 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8755 advertising_set->adv_data = advertising_data; 8756 advertising_set->adv_data_len = advertising_data_length; 8757 // set tasks and start 8758 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8759 hci_run(); 8760 return ERROR_CODE_SUCCESS; 8761 } 8762 8763 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){ 8764 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8765 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8766 advertising_set->scan_data = scan_response_data; 8767 advertising_set->scan_data_len = scan_response_data_length; 8768 // set tasks and start 8769 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8770 hci_run(); 8771 return ERROR_CODE_SUCCESS; 8772 } 8773 8774 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8775 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8776 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8777 advertising_set->enable_timeout = timeout; 8778 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8779 // set tasks and start 8780 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8781 hci_run(); 8782 return ERROR_CODE_SUCCESS; 8783 } 8784 8785 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8786 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8787 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8788 // set tasks and start 8789 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8790 hci_run(); 8791 return ERROR_CODE_SUCCESS; 8792 } 8793 8794 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8795 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8796 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8797 // set tasks and start 8798 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8799 hci_run(); 8800 return ERROR_CODE_SUCCESS; 8801 } 8802 8803 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8804 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8805 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8806 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8807 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8808 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8809 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8810 // set tasks and start 8811 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8812 hci_run(); 8813 return ERROR_CODE_SUCCESS; 8814 } 8815 8816 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8817 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8818 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8819 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8820 return ERROR_CODE_SUCCESS; 8821 } 8822 8823 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 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 advertising_set->periodic_data = periodic_data; 8827 advertising_set->periodic_data_len = periodic_data_length; 8828 // set tasks and start 8829 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8830 hci_run(); 8831 return ERROR_CODE_SUCCESS; 8832 } 8833 8834 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8835 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8836 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8837 // set tasks and start 8838 advertising_set->periodic_include_adi = include_adi; 8839 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8840 hci_run(); 8841 return ERROR_CODE_SUCCESS; 8842 } 8843 8844 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8845 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8846 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8847 // set tasks and start 8848 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8849 hci_run(); 8850 return ERROR_CODE_SUCCESS; 8851 } 8852 8853 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8854 hci_stack->le_past_mode = mode; 8855 hci_stack->le_past_skip = skip; 8856 hci_stack->le_past_sync_timeout = sync_timeout; 8857 hci_stack->le_past_cte_type = cte_type; 8858 hci_stack->le_past_set_default_params = true; 8859 hci_run(); 8860 return ERROR_CODE_SUCCESS; 8861 } 8862 8863 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8864 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8865 if (hci_connection == NULL){ 8866 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8867 } 8868 hci_connection->le_past_sync_handle = sync_handle; 8869 hci_connection->le_past_service_data = service_data; 8870 hci_run(); 8871 return ERROR_CODE_SUCCESS; 8872 } 8873 8874 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8875 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8876 if (hci_connection == NULL){ 8877 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8878 } 8879 hci_connection->le_past_advertising_handle = advertising_handle; 8880 hci_connection->le_past_service_data = service_data; 8881 hci_run(); 8882 return ERROR_CODE_SUCCESS; 8883 } 8884 8885 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8886 8887 #endif 8888 8889 #endif 8890 8891 void hci_le_set_own_address_type(uint8_t own_address_type){ 8892 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8893 if (own_address_type == hci_stack->le_own_addr_type) return; 8894 hci_stack->le_own_addr_type = own_address_type; 8895 8896 #ifdef ENABLE_LE_PERIPHERAL 8897 // update advertisement parameters, too 8898 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8899 hci_run(); 8900 #endif 8901 #ifdef ENABLE_LE_CENTRAL 8902 // note: we don't update scan parameters or modify ongoing connection attempts 8903 #endif 8904 } 8905 8906 void hci_le_random_address_set(const bd_addr_t random_address){ 8907 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8908 memcpy(hci_stack->le_random_address, random_address, 6); 8909 hci_stack->le_random_address_set = true; 8910 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8911 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8912 if (hci_le_extended_advertising_supported()){ 8913 hci_assert_advertisement_set_0_ready(); 8914 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8915 } 8916 #endif 8917 hci_run(); 8918 } 8919 8920 #endif 8921 8922 uint8_t gap_disconnect(hci_con_handle_t handle){ 8923 hci_connection_t * conn = hci_connection_for_handle(handle); 8924 if (!conn){ 8925 hci_emit_disconnection_complete(handle, 0); 8926 return 0; 8927 } 8928 // ignore if already disconnected 8929 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8930 return 0; 8931 } 8932 conn->state = SEND_DISCONNECT; 8933 hci_run(); 8934 return 0; 8935 } 8936 8937 int gap_read_rssi(hci_con_handle_t con_handle){ 8938 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8939 if (hci_connection == NULL) return 0; 8940 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8941 hci_run(); 8942 return 1; 8943 } 8944 8945 /** 8946 * @brief Get connection type 8947 * @param con_handle 8948 * @result connection_type 8949 */ 8950 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8951 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8952 if (!conn) return GAP_CONNECTION_INVALID; 8953 switch (conn->address_type){ 8954 case BD_ADDR_TYPE_LE_PUBLIC: 8955 case BD_ADDR_TYPE_LE_RANDOM: 8956 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8957 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8958 return GAP_CONNECTION_LE; 8959 case BD_ADDR_TYPE_SCO: 8960 return GAP_CONNECTION_SCO; 8961 case BD_ADDR_TYPE_ACL: 8962 return GAP_CONNECTION_ACL; 8963 default: 8964 return GAP_CONNECTION_INVALID; 8965 } 8966 } 8967 8968 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8969 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8970 if (!conn) return HCI_ROLE_INVALID; 8971 return (hci_role_t) conn->role; 8972 } 8973 8974 8975 #ifdef ENABLE_CLASSIC 8976 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8977 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8978 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8979 conn->request_role = role; 8980 hci_run(); 8981 return ERROR_CODE_SUCCESS; 8982 } 8983 #endif 8984 8985 #ifdef ENABLE_BLE 8986 8987 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){ 8988 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8989 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8990 8991 conn->le_phy_update_all_phys = all_phys; 8992 conn->le_phy_update_tx_phys = tx_phys; 8993 conn->le_phy_update_rx_phys = rx_phys; 8994 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8995 8996 hci_run(); 8997 8998 return 0; 8999 } 9000 9001 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9002 9003 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9004 // incorrect configuration: 9005 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9006 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9007 btstack_assert(false); 9008 #endif 9009 9010 // check if already in list 9011 btstack_linked_list_iterator_t it; 9012 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9013 while (btstack_linked_list_iterator_has_next(&it)) { 9014 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9015 if (entry->address_type != address_type) { 9016 continue; 9017 } 9018 if (memcmp(entry->address, address, 6) != 0) { 9019 continue; 9020 } 9021 9022 // if already on controller: 9023 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9024 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9025 // drop remove request 9026 entry->state = LE_WHITELIST_ON_CONTROLLER; 9027 return ERROR_CODE_SUCCESS; 9028 } else { 9029 // disallow as already on controller 9030 return ERROR_CODE_COMMAND_DISALLOWED; 9031 } 9032 } 9033 9034 // assume scheduled to add 9035 return ERROR_CODE_COMMAND_DISALLOWED; 9036 } 9037 9038 // alloc and add to list 9039 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9040 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9041 entry->address_type = address_type; 9042 (void)memcpy(entry->address, address, 6); 9043 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9044 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9045 return ERROR_CODE_SUCCESS; 9046 } 9047 9048 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9049 btstack_linked_list_iterator_t it; 9050 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9051 while (btstack_linked_list_iterator_has_next(&it)){ 9052 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9053 if (entry->address_type != address_type) { 9054 continue; 9055 } 9056 if (memcmp(entry->address, address, 6) != 0) { 9057 continue; 9058 } 9059 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9060 // remove from controller if already present 9061 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9062 } else { 9063 // directly remove entry from whitelist 9064 btstack_linked_list_iterator_remove(&it); 9065 btstack_memory_whitelist_entry_free(entry); 9066 } 9067 return ERROR_CODE_SUCCESS; 9068 } 9069 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9070 } 9071 9072 static void hci_whitelist_clear(void){ 9073 btstack_linked_list_iterator_t it; 9074 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9075 while (btstack_linked_list_iterator_has_next(&it)){ 9076 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9077 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9078 // remove from controller if already present 9079 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9080 continue; 9081 } 9082 // directly remove entry from whitelist 9083 btstack_linked_list_iterator_remove(&it); 9084 btstack_memory_whitelist_entry_free(entry); 9085 } 9086 } 9087 9088 /** 9089 * @brief Clear Whitelist 9090 * @return 0 if ok 9091 */ 9092 uint8_t gap_whitelist_clear(void){ 9093 hci_whitelist_clear(); 9094 hci_run(); 9095 return ERROR_CODE_SUCCESS; 9096 } 9097 9098 /** 9099 * @brief Add Device to Whitelist 9100 * @param address_typ 9101 * @param address 9102 * @return 0 if ok 9103 */ 9104 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9105 uint8_t status = hci_whitelist_add(address_type, address); 9106 if (status){ 9107 return status; 9108 } 9109 hci_run(); 9110 return ERROR_CODE_SUCCESS; 9111 } 9112 9113 /** 9114 * @brief Remove Device from Whitelist 9115 * @param address_typ 9116 * @param address 9117 * @return 0 if ok 9118 */ 9119 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9120 uint8_t status = hci_whitelist_remove(address_type, address); 9121 if (status){ 9122 return status; 9123 } 9124 hci_run(); 9125 return ERROR_CODE_SUCCESS; 9126 } 9127 9128 #ifdef ENABLE_LE_CENTRAL 9129 /** 9130 * @brief Connect with Whitelist 9131 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9132 * @return - if ok 9133 */ 9134 uint8_t gap_connect_with_whitelist(void){ 9135 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9136 return ERROR_CODE_COMMAND_DISALLOWED; 9137 } 9138 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9139 hci_run(); 9140 return ERROR_CODE_SUCCESS; 9141 } 9142 9143 /** 9144 * @brief Auto Connection Establishment - Start Connecting to device 9145 * @param address_typ 9146 * @param address 9147 * @return 0 if ok 9148 */ 9149 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9150 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9151 return ERROR_CODE_COMMAND_DISALLOWED; 9152 } 9153 9154 uint8_t status = hci_whitelist_add(address_type, address); 9155 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9156 return status; 9157 } 9158 9159 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9160 9161 hci_run(); 9162 return ERROR_CODE_SUCCESS; 9163 } 9164 9165 /** 9166 * @brief Auto Connection Establishment - Stop Connecting to device 9167 * @param address_typ 9168 * @param address 9169 * @return 0 if ok 9170 */ 9171 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9172 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9173 return ERROR_CODE_COMMAND_DISALLOWED; 9174 } 9175 9176 hci_whitelist_remove(address_type, address); 9177 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9178 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9179 } 9180 hci_run(); 9181 return 0; 9182 } 9183 9184 /** 9185 * @brief Auto Connection Establishment - Stop everything 9186 * @note Convenience function to stop all active auto connection attempts 9187 */ 9188 uint8_t gap_auto_connection_stop_all(void){ 9189 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9190 return ERROR_CODE_COMMAND_DISALLOWED; 9191 } 9192 hci_whitelist_clear(); 9193 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9194 hci_run(); 9195 return ERROR_CODE_SUCCESS; 9196 } 9197 9198 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9199 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9200 if (!conn) return 0; 9201 return conn->le_connection_interval; 9202 } 9203 #endif 9204 #endif 9205 9206 #ifdef ENABLE_CLASSIC 9207 /** 9208 * @brief Set Extended Inquiry Response data 9209 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9210 * @note has to be done before stack starts up 9211 */ 9212 void gap_set_extended_inquiry_response(const uint8_t * data){ 9213 hci_stack->eir_data = data; 9214 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9215 hci_run(); 9216 } 9217 9218 /** 9219 * @brief Start GAP Classic Inquiry 9220 * @param duration in 1.28s units 9221 * @return 0 if ok 9222 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9223 */ 9224 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9225 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9226 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9227 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9228 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9229 } 9230 hci_stack->inquiry_state = duration_in_1280ms_units; 9231 hci_stack->inquiry_max_period_length = 0; 9232 hci_stack->inquiry_min_period_length = 0; 9233 hci_run(); 9234 return 0; 9235 } 9236 9237 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9238 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9239 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9240 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9241 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9242 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9243 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9244 9245 hci_stack->inquiry_state = duration; 9246 hci_stack->inquiry_max_period_length = max_period_length; 9247 hci_stack->inquiry_min_period_length = min_period_length; 9248 hci_run(); 9249 return 0; 9250 } 9251 9252 /** 9253 * @brief Stop GAP Classic Inquiry 9254 * @return 0 if ok 9255 */ 9256 int gap_inquiry_stop(void){ 9257 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9258 // emit inquiry complete event, before it even started 9259 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9260 hci_emit_event(event, sizeof(event), 1); 9261 return 0; 9262 } 9263 switch (hci_stack->inquiry_state){ 9264 case GAP_INQUIRY_STATE_ACTIVE: 9265 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9266 hci_run(); 9267 return ERROR_CODE_SUCCESS; 9268 case GAP_INQUIRY_STATE_PERIODIC: 9269 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9270 hci_run(); 9271 return ERROR_CODE_SUCCESS; 9272 default: 9273 return ERROR_CODE_COMMAND_DISALLOWED; 9274 } 9275 } 9276 9277 void gap_inquiry_set_lap(uint32_t lap){ 9278 hci_stack->inquiry_lap = lap; 9279 } 9280 9281 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9282 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9283 hci_stack->inquiry_scan_window = inquiry_scan_window; 9284 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9285 hci_run(); 9286 } 9287 9288 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9289 { 9290 hci_stack->inquiry_tx_power_level = tx_power; 9291 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9292 hci_run(); 9293 } 9294 9295 9296 /** 9297 * @brief Remote Name Request 9298 * @param addr 9299 * @param page_scan_repetition_mode 9300 * @param clock_offset only used when bit 15 is set 9301 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9302 */ 9303 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9304 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9305 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9306 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9307 hci_stack->remote_name_clock_offset = clock_offset; 9308 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9309 hci_run(); 9310 return 0; 9311 } 9312 9313 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9314 hci_stack->gap_pairing_state = state; 9315 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9316 hci_run(); 9317 return 0; 9318 } 9319 9320 /** 9321 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9322 * @param addr 9323 * @param pin_data 9324 * @param pin_len 9325 * @return 0 if ok 9326 */ 9327 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9328 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9329 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9330 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9331 hci_stack->gap_pairing_pin_len = pin_len; 9332 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9333 } 9334 9335 /** 9336 * @brief Legacy Pairing Pin Code Response 9337 * @param addr 9338 * @param pin 9339 * @return 0 if ok 9340 */ 9341 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9342 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9343 } 9344 9345 /** 9346 * @brief Abort Legacy Pairing 9347 * @param addr 9348 * @param pin 9349 * @return 0 if ok 9350 */ 9351 int gap_pin_code_negative(bd_addr_t addr){ 9352 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9353 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9354 } 9355 9356 /** 9357 * @brief SSP Passkey Response 9358 * @param addr 9359 * @param passkey 9360 * @return 0 if ok 9361 */ 9362 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9363 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9364 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9365 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9366 } 9367 9368 /** 9369 * @brief Abort SSP Passkey Entry/Pairing 9370 * @param addr 9371 * @param pin 9372 * @return 0 if ok 9373 */ 9374 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9375 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9376 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9377 } 9378 9379 /** 9380 * @brief Accept SSP Numeric Comparison 9381 * @param addr 9382 * @param passkey 9383 * @return 0 if ok 9384 */ 9385 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9386 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9387 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9388 } 9389 9390 /** 9391 * @brief Abort SSP Numeric Comparison/Pairing 9392 * @param addr 9393 * @param pin 9394 * @return 0 if ok 9395 */ 9396 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9397 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9398 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9399 } 9400 9401 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9402 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9403 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9404 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9405 connectionSetAuthenticationFlags(conn, flag); 9406 hci_run(); 9407 return ERROR_CODE_SUCCESS; 9408 } 9409 #endif 9410 9411 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9412 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9413 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9414 } 9415 9416 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9417 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9418 } 9419 #endif 9420 9421 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9422 /** 9423 * @brief Report Remote OOB Data 9424 * @param bd_addr 9425 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9426 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9427 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9428 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9429 */ 9430 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){ 9431 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9432 if (connection == NULL) { 9433 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9434 } 9435 connection->classic_oob_c_192 = c_192; 9436 connection->classic_oob_r_192 = r_192; 9437 9438 // ignore P-256 if not supported by us 9439 if (hci_stack->secure_connections_active){ 9440 connection->classic_oob_c_256 = c_256; 9441 connection->classic_oob_r_256 = r_256; 9442 } 9443 9444 return ERROR_CODE_SUCCESS; 9445 } 9446 /** 9447 * @brief Generate new OOB data 9448 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9449 */ 9450 void gap_ssp_generate_oob_data(void){ 9451 hci_stack->classic_read_local_oob_data = true; 9452 hci_run(); 9453 } 9454 9455 #endif 9456 9457 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9458 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9459 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9460 if (connection == NULL) { 9461 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9462 } 9463 9464 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9465 connection->link_key_type = type; 9466 9467 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9468 } 9469 9470 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9471 /** 9472 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9473 * @param inquiry_mode see bluetooth_defines.h 9474 */ 9475 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9476 hci_stack->inquiry_mode = inquiry_mode; 9477 } 9478 9479 /** 9480 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9481 */ 9482 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9483 hci_stack->sco_voice_setting = voice_setting; 9484 } 9485 9486 /** 9487 * @brief Get SCO Voice Setting 9488 * @return current voice setting 9489 */ 9490 uint16_t hci_get_sco_voice_setting(void){ 9491 return hci_stack->sco_voice_setting; 9492 } 9493 9494 static int hci_have_usb_transport(void){ 9495 if (!hci_stack->hci_transport) return 0; 9496 const char * transport_name = hci_stack->hci_transport->name; 9497 if (!transport_name) return 0; 9498 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9499 } 9500 9501 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9502 uint16_t sco_packet_length = 0; 9503 9504 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9505 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9506 int multiplier; 9507 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9508 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9509 multiplier = 2; 9510 } else { 9511 multiplier = 1; 9512 } 9513 #endif 9514 9515 #ifdef ENABLE_SCO_OVER_HCI 9516 if (hci_have_usb_transport()){ 9517 // see Core Spec for H2 USB Transfer. 9518 // 3 byte SCO header + 24 bytes per connection 9519 // @note multiple sco connections not supported currently 9520 sco_packet_length = 3 + 24 * multiplier; 9521 } else { 9522 // 3 byte SCO header + SCO packet length over the air 9523 sco_packet_length = 3 + payload_size * multiplier; 9524 // assert that it still fits inside an SCO buffer 9525 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9526 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9527 } 9528 } 9529 #endif 9530 #ifdef HAVE_SCO_TRANSPORT 9531 // 3 byte SCO header + SCO packet length over the air 9532 sco_packet_length = 3 + payload_size * multiplier; 9533 // assert that it still fits inside an SCO buffer 9534 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9535 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9536 } 9537 #endif 9538 return sco_packet_length; 9539 } 9540 9541 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9542 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9543 if (connection != NULL){ 9544 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9545 } 9546 return 0; 9547 } 9548 9549 uint16_t hci_get_sco_packet_length(void){ 9550 btstack_linked_list_iterator_t it; 9551 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9552 while (btstack_linked_list_iterator_has_next(&it)){ 9553 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9554 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9555 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9556 } 9557 } 9558 return 0; 9559 } 9560 9561 /** 9562 * @brief Sets the master/slave policy 9563 * @param policy (0: attempt to become master, 1: let connecting device decide) 9564 */ 9565 void hci_set_master_slave_policy(uint8_t policy){ 9566 hci_stack->master_slave_policy = policy; 9567 } 9568 9569 #endif 9570 9571 HCI_STATE hci_get_state(void){ 9572 return hci_stack->state; 9573 } 9574 9575 #ifdef ENABLE_CLASSIC 9576 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9577 hci_stack->gap_classic_accept_callback = accept_callback; 9578 } 9579 #endif 9580 9581 /** 9582 * @brief Set callback for Bluetooth Hardware Error 9583 */ 9584 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9585 hci_stack->hardware_error_callback = fn; 9586 } 9587 9588 void hci_disconnect_all(void){ 9589 btstack_linked_list_iterator_t it; 9590 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9591 while (btstack_linked_list_iterator_has_next(&it)){ 9592 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9593 if (con->state == SENT_DISCONNECT) continue; 9594 con->state = SEND_DISCONNECT; 9595 } 9596 hci_run(); 9597 } 9598 9599 uint16_t hci_get_manufacturer(void){ 9600 return hci_stack->manufacturer; 9601 } 9602 9603 #ifdef ENABLE_BLE 9604 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9605 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9606 if (!hci_con) return NULL; 9607 return &hci_con->sm_connection; 9608 } 9609 9610 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9611 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9612 #endif 9613 9614 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9615 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9616 if (hci_connection == NULL) return 0; 9617 if (hci_is_le_connection(hci_connection)){ 9618 #ifdef ENABLE_BLE 9619 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9620 if (sm_conn->sm_connection_encrypted != 0u) { 9621 return sm_conn->sm_actual_encryption_key_size; 9622 } 9623 #endif 9624 } else { 9625 #ifdef ENABLE_CLASSIC 9626 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9627 return hci_connection->encryption_key_size; 9628 } 9629 #endif 9630 } 9631 return 0; 9632 } 9633 9634 bool gap_authenticated(hci_con_handle_t con_handle){ 9635 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9636 if (hci_connection == NULL) return false; 9637 9638 switch (hci_connection->address_type){ 9639 #ifdef ENABLE_BLE 9640 case BD_ADDR_TYPE_LE_PUBLIC: 9641 case BD_ADDR_TYPE_LE_RANDOM: 9642 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9643 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9644 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9645 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9646 #endif 9647 #ifdef ENABLE_CLASSIC 9648 case BD_ADDR_TYPE_SCO: 9649 case BD_ADDR_TYPE_ACL: 9650 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9651 #endif 9652 default: 9653 return false; 9654 } 9655 } 9656 9657 bool gap_secure_connection(hci_con_handle_t con_handle){ 9658 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9659 if (hci_connection == NULL) return 0; 9660 9661 switch (hci_connection->address_type){ 9662 #ifdef ENABLE_BLE 9663 case BD_ADDR_TYPE_LE_PUBLIC: 9664 case BD_ADDR_TYPE_LE_RANDOM: 9665 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9666 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9667 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9668 return hci_connection->sm_connection.sm_connection_sc; 9669 #endif 9670 #ifdef ENABLE_CLASSIC 9671 case BD_ADDR_TYPE_SCO: 9672 case BD_ADDR_TYPE_ACL: 9673 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9674 #endif 9675 default: 9676 return false; 9677 } 9678 } 9679 9680 bool gap_bonded(hci_con_handle_t con_handle){ 9681 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9682 if (hci_connection == NULL) return 0; 9683 9684 #ifdef ENABLE_CLASSIC 9685 link_key_t link_key; 9686 link_key_type_t link_key_type; 9687 #endif 9688 switch (hci_connection->address_type){ 9689 #ifdef ENABLE_BLE 9690 case BD_ADDR_TYPE_LE_PUBLIC: 9691 case BD_ADDR_TYPE_LE_RANDOM: 9692 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9693 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9694 return hci_connection->sm_connection.sm_le_db_index >= 0; 9695 #endif 9696 #ifdef ENABLE_CLASSIC 9697 case BD_ADDR_TYPE_SCO: 9698 case BD_ADDR_TYPE_ACL: 9699 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9700 #endif 9701 default: 9702 return false; 9703 } 9704 } 9705 9706 #ifdef ENABLE_BLE 9707 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9708 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9709 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9710 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9711 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9712 return sm_conn->sm_connection_authorization_state; 9713 } 9714 #endif 9715 9716 #ifdef ENABLE_CLASSIC 9717 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){ 9718 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9719 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9720 conn->sniff_min_interval = sniff_min_interval; 9721 conn->sniff_max_interval = sniff_max_interval; 9722 conn->sniff_attempt = sniff_attempt; 9723 conn->sniff_timeout = sniff_timeout; 9724 hci_run(); 9725 return 0; 9726 } 9727 9728 /** 9729 * @brief Exit Sniff mode 9730 * @param con_handle 9731 @ @return 0 if ok 9732 */ 9733 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9734 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9735 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9736 conn->sniff_min_interval = 0xffff; 9737 hci_run(); 9738 return 0; 9739 } 9740 9741 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){ 9742 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9743 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9744 conn->sniff_subrating_max_latency = max_latency; 9745 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9746 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9747 hci_run(); 9748 return ERROR_CODE_SUCCESS; 9749 } 9750 9751 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){ 9752 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9753 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9754 conn->qos_service_type = service_type; 9755 conn->qos_token_rate = token_rate; 9756 conn->qos_peak_bandwidth = peak_bandwidth; 9757 conn->qos_latency = latency; 9758 conn->qos_delay_variation = delay_variation; 9759 hci_run(); 9760 return ERROR_CODE_SUCCESS; 9761 } 9762 9763 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9764 hci_stack->new_page_scan_interval = page_scan_interval; 9765 hci_stack->new_page_scan_window = page_scan_window; 9766 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9767 hci_run(); 9768 } 9769 9770 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9771 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9772 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9773 hci_run(); 9774 } 9775 9776 void gap_set_page_timeout(uint16_t page_timeout){ 9777 hci_stack->page_timeout = page_timeout; 9778 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9779 hci_run(); 9780 } 9781 9782 #endif 9783 9784 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9785 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9786 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9787 if (le_device_db_index >= le_device_db_max_count()) return; 9788 uint8_t offset = le_device_db_index >> 3; 9789 uint8_t mask = 1 << (le_device_db_index & 7); 9790 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9791 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9792 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9793 // note: go back to remove entries, otherwise, a remove + add will skip the add 9794 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9795 } 9796 } 9797 9798 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9799 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9800 if (le_device_db_index >= le_device_db_max_count()) return; 9801 uint8_t offset = le_device_db_index >> 3; 9802 uint8_t mask = 1 << (le_device_db_index & 7); 9803 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9804 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9805 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9806 } 9807 } 9808 9809 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9810 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9811 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9812 } 9813 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9814 // restart le resolving list update 9815 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9816 } 9817 return ERROR_CODE_SUCCESS; 9818 } 9819 9820 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9821 hci_stack->le_privacy_mode = privacy_mode; 9822 } 9823 #endif 9824 9825 #ifdef ENABLE_BLE 9826 #ifdef ENABLE_LE_CENTRAL 9827 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9828 9829 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9830 9831 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9832 // incorrect configuration: 9833 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9834 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9835 btstack_assert(false); 9836 #endif 9837 9838 // check if already in list 9839 btstack_linked_list_iterator_t it; 9840 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9841 while (btstack_linked_list_iterator_has_next(&it)) { 9842 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9843 if (entry->sid != advertising_sid) { 9844 continue; 9845 } 9846 if (entry->address_type != address_type) { 9847 continue; 9848 } 9849 if (memcmp(entry->address, address, 6) != 0) { 9850 continue; 9851 } 9852 // disallow if already scheduled to add 9853 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9854 return ERROR_CODE_COMMAND_DISALLOWED; 9855 } 9856 // still on controller, but scheduled to remove -> re-add 9857 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9858 return ERROR_CODE_SUCCESS; 9859 } 9860 // alloc and add to list 9861 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9862 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9863 entry->sid = advertising_sid; 9864 entry->address_type = address_type; 9865 (void)memcpy(entry->address, address, 6); 9866 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9867 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9868 return ERROR_CODE_SUCCESS; 9869 } 9870 9871 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9872 btstack_linked_list_iterator_t it; 9873 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9874 while (btstack_linked_list_iterator_has_next(&it)){ 9875 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9876 if (entry->sid != advertising_sid) { 9877 continue; 9878 } 9879 if (entry->address_type != address_type) { 9880 continue; 9881 } 9882 if (memcmp(entry->address, address, 6) != 0) { 9883 continue; 9884 } 9885 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9886 // remove from controller if already present 9887 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9888 } else { 9889 // directly remove entry from whitelist 9890 btstack_linked_list_iterator_remove(&it); 9891 btstack_memory_periodic_advertiser_list_entry_free(entry); 9892 } 9893 return ERROR_CODE_SUCCESS; 9894 } 9895 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9896 } 9897 9898 static void hci_periodic_advertiser_list_clear(void){ 9899 btstack_linked_list_iterator_t it; 9900 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9901 while (btstack_linked_list_iterator_has_next(&it)){ 9902 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9903 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9904 // remove from controller if already present 9905 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9906 continue; 9907 } 9908 // directly remove entry from whitelist 9909 btstack_linked_list_iterator_remove(&it); 9910 btstack_memory_periodic_advertiser_list_entry_free(entry); 9911 } 9912 } 9913 9914 uint8_t gap_periodic_advertiser_list_clear(void){ 9915 hci_periodic_advertiser_list_clear(); 9916 hci_run(); 9917 return ERROR_CODE_SUCCESS; 9918 } 9919 9920 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9921 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9922 if (status){ 9923 return status; 9924 } 9925 hci_run(); 9926 return ERROR_CODE_SUCCESS; 9927 } 9928 9929 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9930 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9931 if (status){ 9932 return status; 9933 } 9934 hci_run(); 9935 return ERROR_CODE_SUCCESS; 9936 } 9937 9938 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9939 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9940 // abort if already active 9941 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9942 return ERROR_CODE_COMMAND_DISALLOWED; 9943 } 9944 // store request 9945 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9946 hci_stack->le_periodic_sync_options = options; 9947 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9948 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9949 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9950 hci_stack->le_periodic_sync_skip = skip; 9951 hci_stack->le_periodic_sync_timeout = sync_timeout; 9952 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9953 9954 hci_run(); 9955 return ERROR_CODE_SUCCESS; 9956 } 9957 9958 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9959 // abort if not requested 9960 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9961 return ERROR_CODE_COMMAND_DISALLOWED; 9962 } 9963 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9964 hci_run(); 9965 return ERROR_CODE_SUCCESS; 9966 } 9967 9968 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9969 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9970 return ERROR_CODE_COMMAND_DISALLOWED; 9971 } 9972 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9973 hci_run(); 9974 return ERROR_CODE_SUCCESS; 9975 } 9976 9977 #endif 9978 #endif 9979 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9980 static hci_iso_stream_t * 9981 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9982 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9983 if (iso_stream != NULL){ 9984 iso_stream->iso_type = iso_type; 9985 iso_stream->state = state; 9986 iso_stream->group_id = group_id; 9987 iso_stream->stream_id = stream_id; 9988 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9989 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9990 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9991 } 9992 return iso_stream; 9993 } 9994 9995 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9996 btstack_linked_list_iterator_t it; 9997 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9998 while (btstack_linked_list_iterator_has_next(&it)){ 9999 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10000 if (iso_stream->cis_handle == con_handle ) { 10001 return iso_stream; 10002 } 10003 } 10004 return NULL; 10005 } 10006 10007 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10008 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10009 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10010 btstack_memory_hci_iso_stream_free(iso_stream); 10011 } 10012 10013 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10014 btstack_linked_list_iterator_t it; 10015 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10016 while (btstack_linked_list_iterator_has_next(&it)){ 10017 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10018 if ((iso_stream->group_id == group_id) && 10019 (iso_stream->iso_type == iso_type)){ 10020 btstack_linked_list_iterator_remove(&it); 10021 btstack_memory_hci_iso_stream_free(iso_stream); 10022 } 10023 } 10024 } 10025 10026 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10027 btstack_linked_list_iterator_t it; 10028 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10029 while (btstack_linked_list_iterator_has_next(&it)){ 10030 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10031 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10032 (iso_stream->group_id == group_id)){ 10033 btstack_linked_list_iterator_remove(&it); 10034 btstack_memory_hci_iso_stream_free(iso_stream); 10035 } 10036 } 10037 } 10038 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10039 btstack_linked_list_iterator_t it; 10040 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10041 while (btstack_linked_list_iterator_has_next(&it)){ 10042 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10043 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10044 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10045 } 10046 } 10047 } 10048 10049 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10050 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10051 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10052 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10053 return (sdu_len_offset + 2 + sdu_len) == size; 10054 } 10055 10056 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10057 if (iso_stream == NULL){ 10058 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10059 return; 10060 } 10061 10062 if (hci_stack->iso_packet_handler == NULL) { 10063 return; 10064 } 10065 10066 // parse header 10067 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10068 uint16_t data_total_length = little_endian_read_16(packet, 2); 10069 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10070 10071 // assert packet is complete 10072 if ((data_total_length + 4u) != size){ 10073 return; 10074 } 10075 10076 if ((pb_flag & 0x01) == 0){ 10077 if (pb_flag == 0x02){ 10078 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10079 if (hci_iso_sdu_complete(packet, size)) { 10080 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10081 } 10082 } else { 10083 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10084 if (size > sizeof(iso_stream->reassembly_buffer)){ 10085 return; 10086 } 10087 memcpy(iso_stream->reassembly_buffer, packet, size); 10088 // fix pb_flag 10089 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10090 iso_stream->reassembly_pos = size; 10091 } 10092 } else { 10093 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10094 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10095 if (ts_flag != 0){ 10096 return; 10097 } 10098 // append fragment 10099 if (iso_stream->reassembly_pos == 0){ 10100 return; 10101 } 10102 10103 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10104 // reset reassembly buffer 10105 iso_stream->reassembly_pos = 0; 10106 return; 10107 } 10108 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10109 iso_stream->reassembly_pos += data_total_length; 10110 10111 // deliver if last fragment and SDU complete 10112 if (pb_flag == 0x03){ 10113 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10114 // fix data_total_length 10115 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10116 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10117 } 10118 // reset reassembly buffer 10119 iso_stream->reassembly_pos = 0; 10120 } 10121 } 10122 } 10123 10124 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10125 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10126 uint16_t pos = 0; 10127 event[pos++] = HCI_EVENT_META_GAP; 10128 event[pos++] = 4 + (2 * big->num_bis); 10129 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10130 event[pos++] = status; 10131 event[pos++] = big->big_handle; 10132 event[pos++] = big->num_bis; 10133 uint8_t i; 10134 for (i=0;i<big->num_bis;i++){ 10135 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10136 pos += 2; 10137 } 10138 hci_emit_event(event, pos, 0); 10139 } 10140 10141 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10142 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10143 uint16_t pos = 0; 10144 event[pos++] = HCI_EVENT_META_GAP; 10145 event[pos++] = 4 + (2 * cig->num_cis); 10146 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10147 event[pos++] = status; 10148 event[pos++] = cig->cig_id; 10149 event[pos++] = cig->num_cis; 10150 uint8_t i; 10151 for (i=0;i<cig->num_cis;i++){ 10152 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10153 pos += 2; 10154 } 10155 hci_emit_event(event, pos, 0); 10156 } 10157 10158 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10159 uint16_t pos = 0; 10160 event[pos++] = HCI_EVENT_META_GAP; 10161 event[pos++] = 8; 10162 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10163 event[pos++] = status; 10164 event[pos++] = iso_stream->group_id; 10165 event[pos++] = iso_stream->stream_id; 10166 little_endian_store_16(event, pos, iso_stream->cis_handle); 10167 pos += 2; 10168 little_endian_store_16(event, pos, iso_stream->acl_handle); 10169 pos += 2; 10170 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10171 pos += 2; 10172 event[pos++] = iso_stream->number_of_subevents; 10173 event[pos++] = iso_stream->burst_number_c_to_p; 10174 event[pos++] = iso_stream->burst_number_p_to_c; 10175 event[pos++] = iso_stream->flush_timeout_c_to_p; 10176 event[pos++] = iso_stream->flush_timeout_p_to_c; 10177 return pos; 10178 } 10179 10180 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10181 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10182 // cache data before finalizing struct 10183 uint8_t event [17]; 10184 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10185 btstack_assert(pos <= sizeof(event)); 10186 if (status != ERROR_CODE_SUCCESS){ 10187 hci_iso_stream_finalize(iso_stream); 10188 } 10189 hci_emit_event(event, pos, 0); 10190 } 10191 10192 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10193 uint8_t event [4]; 10194 uint16_t pos = 0; 10195 event[pos++] = HCI_EVENT_META_GAP; 10196 event[pos++] = 2; 10197 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10198 event[pos++] = big->big_handle; 10199 hci_emit_event(event, pos, 0); 10200 } 10201 10202 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10203 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10204 uint16_t pos = 0; 10205 event[pos++] = HCI_EVENT_META_GAP; 10206 event[pos++] = 4; 10207 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10208 event[pos++] = status; 10209 event[pos++] = big_sync->big_handle; 10210 event[pos++] = big_sync->num_bis; 10211 uint8_t i; 10212 for (i=0;i<big_sync->num_bis;i++){ 10213 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10214 pos += 2; 10215 } 10216 hci_emit_event(event, pos, 0); 10217 } 10218 10219 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10220 uint8_t event [4]; 10221 uint16_t pos = 0; 10222 event[pos++] = HCI_EVENT_META_GAP; 10223 event[pos++] = 2; 10224 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10225 event[pos++] = big_handle; 10226 hci_emit_event(event, pos, 0); 10227 } 10228 10229 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10230 uint8_t event[6]; 10231 uint16_t pos = 0; 10232 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10233 event[pos++] = sizeof(event) - 2; 10234 event[pos++] = big->big_handle; 10235 event[pos++] = bis_index; 10236 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10237 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10238 } 10239 10240 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10241 uint8_t event[4]; 10242 uint16_t pos = 0; 10243 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10244 event[pos++] = sizeof(event) - 2; 10245 little_endian_store_16(event, pos, cis_con_handle); 10246 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10247 } 10248 10249 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10250 btstack_linked_list_iterator_t it; 10251 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10252 while (btstack_linked_list_iterator_has_next(&it)){ 10253 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10254 if ( big->big_handle == big_handle ) { 10255 return big; 10256 } 10257 } 10258 return NULL; 10259 } 10260 10261 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10262 btstack_linked_list_iterator_t it; 10263 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10264 while (btstack_linked_list_iterator_has_next(&it)){ 10265 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10266 if ( big_sync->big_handle == big_handle ) { 10267 return big_sync; 10268 } 10269 } 10270 return NULL; 10271 } 10272 10273 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10274 hci_stack->iso_packets_to_queue = num_packets; 10275 } 10276 10277 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10278 btstack_linked_list_iterator_t it; 10279 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10280 while (btstack_linked_list_iterator_has_next(&it)){ 10281 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10282 if ( cig->cig_id == cig_id ) { 10283 return cig; 10284 } 10285 } 10286 return NULL; 10287 } 10288 10289 static void hci_iso_notify_can_send_now(void){ 10290 10291 // BIG 10292 10293 btstack_linked_list_iterator_t it; 10294 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10295 while (btstack_linked_list_iterator_has_next(&it)){ 10296 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10297 // track number completed packet timestamps 10298 if (big->num_completed_timestamp_current_valid){ 10299 big->num_completed_timestamp_current_valid = false; 10300 if (big->num_completed_timestamp_previous_valid){ 10301 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10302 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10303 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10304 big->num_completed_timestamp_previous_ms); 10305 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10306 // to catch up, skip packet on all BIS 10307 uint8_t i; 10308 for (i=0;i<big->num_bis;i++){ 10309 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10310 if (iso_stream){ 10311 iso_stream->num_packets_to_skip++; 10312 } 10313 } 10314 } 10315 } 10316 big->num_completed_timestamp_previous_valid = true; 10317 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10318 } 10319 10320 if (big->can_send_now_requested){ 10321 // check if no outgoing iso packets pending and no can send now have to be emitted 10322 uint8_t i; 10323 bool can_send = true; 10324 uint8_t num_iso_queued_minimum = 0; 10325 for (i=0;i<big->num_bis;i++){ 10326 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10327 if (iso_stream == NULL) continue; 10328 // handle case where individual ISO packet was sent too late: 10329 // for each additionally queued packet, a new one needs to get skipped 10330 if (i==0){ 10331 num_iso_queued_minimum = iso_stream->num_packets_sent; 10332 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10333 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10334 iso_stream->num_packets_to_skip += num_packets_to_skip; 10335 iso_stream->num_packets_sent -= num_packets_to_skip; 10336 } 10337 // check if we can send now 10338 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10339 can_send = false; 10340 break; 10341 } 10342 } 10343 if (can_send){ 10344 // propagate can send now to individual streams 10345 big->can_send_now_requested = false; 10346 for (i=0;i<big->num_bis;i++){ 10347 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10348 iso_stream->emit_ready_to_send = true; 10349 } 10350 } 10351 } 10352 } 10353 10354 if (hci_stack->hci_packet_buffer_reserved) return; 10355 10356 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10357 while (btstack_linked_list_iterator_has_next(&it)){ 10358 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10359 // report bis ready 10360 uint8_t i; 10361 for (i=0;i<big->num_bis;i++){ 10362 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10363 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10364 iso_stream->emit_ready_to_send = false; 10365 hci_emit_bis_can_send_now(big, i); 10366 break; 10367 } 10368 } 10369 } 10370 10371 // CIS 10372 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10373 while (btstack_linked_list_iterator_has_next(&it)) { 10374 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10375 if ((iso_stream->can_send_now_requested) && 10376 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10377 iso_stream->can_send_now_requested = false; 10378 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10379 } 10380 } 10381 } 10382 10383 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10384 // make big handle unique and usuable for big and big sync 10385 if (hci_big_for_handle(big_handle) != NULL){ 10386 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10387 } 10388 if (hci_big_sync_for_handle(big_handle) != NULL){ 10389 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10390 } 10391 if (num_bis == 0){ 10392 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10393 } 10394 if (num_bis > MAX_NR_BIS){ 10395 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10396 } 10397 10398 // reserve ISO Streams 10399 uint8_t i; 10400 uint8_t status = ERROR_CODE_SUCCESS; 10401 for (i=0;i<num_bis;i++){ 10402 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10403 if (iso_stream == NULL) { 10404 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10405 break; 10406 } 10407 } 10408 10409 // free structs on error 10410 if (status != ERROR_CODE_SUCCESS){ 10411 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10412 } 10413 10414 return status; 10415 } 10416 10417 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10418 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10419 if (status != ERROR_CODE_SUCCESS){ 10420 return status; 10421 } 10422 10423 le_audio_big_t * big = storage; 10424 big->big_handle = big_params->big_handle; 10425 big->params = big_params; 10426 big->state = LE_AUDIO_BIG_STATE_CREATE; 10427 big->num_bis = big_params->num_bis; 10428 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10429 10430 hci_run(); 10431 10432 return ERROR_CODE_SUCCESS; 10433 } 10434 10435 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10436 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10437 if (status != ERROR_CODE_SUCCESS){ 10438 return status; 10439 } 10440 10441 le_audio_big_sync_t * big_sync = storage; 10442 big_sync->big_handle = big_sync_params->big_handle; 10443 big_sync->params = big_sync_params; 10444 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10445 big_sync->num_bis = big_sync_params->num_bis; 10446 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10447 10448 hci_run(); 10449 10450 return ERROR_CODE_SUCCESS; 10451 } 10452 10453 uint8_t gap_big_terminate(uint8_t big_handle){ 10454 le_audio_big_t * big = hci_big_for_handle(big_handle); 10455 if (big == NULL){ 10456 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10457 } 10458 switch (big->state){ 10459 case LE_AUDIO_BIG_STATE_CREATE: 10460 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10461 hci_emit_big_terminated(big); 10462 break; 10463 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10464 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10465 break; 10466 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10467 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10468 case LE_AUDIO_BIG_STATE_ACTIVE: 10469 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10470 hci_run(); 10471 break; 10472 default: 10473 return ERROR_CODE_COMMAND_DISALLOWED; 10474 } 10475 return ERROR_CODE_SUCCESS; 10476 } 10477 10478 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10479 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10480 if (big_sync == NULL){ 10481 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10482 } 10483 switch (big_sync->state){ 10484 case LE_AUDIO_BIG_STATE_CREATE: 10485 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10486 hci_emit_big_sync_stopped(big_handle); 10487 break; 10488 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10489 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10490 break; 10491 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10492 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10493 case LE_AUDIO_BIG_STATE_ACTIVE: 10494 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10495 hci_run(); 10496 break; 10497 default: 10498 return ERROR_CODE_COMMAND_DISALLOWED; 10499 } 10500 return ERROR_CODE_SUCCESS; 10501 } 10502 10503 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10504 le_audio_big_t * big = hci_big_for_handle(big_handle); 10505 if (big == NULL){ 10506 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10507 } 10508 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10509 return ERROR_CODE_COMMAND_DISALLOWED; 10510 } 10511 big->can_send_now_requested = true; 10512 hci_iso_notify_can_send_now(); 10513 return ERROR_CODE_SUCCESS; 10514 } 10515 10516 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10517 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10518 if (iso_stream == NULL){ 10519 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10520 } 10521 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10522 return ERROR_CODE_COMMAND_DISALLOWED; 10523 } 10524 iso_stream->can_send_now_requested = true; 10525 hci_iso_notify_can_send_now(); 10526 return ERROR_CODE_SUCCESS; 10527 } 10528 10529 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10530 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10531 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10532 } 10533 if (cig_params->num_cis == 0){ 10534 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10535 } 10536 if (cig_params->num_cis > MAX_NR_CIS){ 10537 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10538 } 10539 10540 // reserve ISO Streams 10541 uint8_t i; 10542 uint8_t status = ERROR_CODE_SUCCESS; 10543 for (i=0;i<cig_params->num_cis;i++){ 10544 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10545 if (iso_stream == NULL) { 10546 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10547 break; 10548 } 10549 } 10550 10551 // free structs on error 10552 if (status != ERROR_CODE_SUCCESS){ 10553 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10554 return status; 10555 } 10556 10557 le_audio_cig_t * cig = storage; 10558 cig->cig_id = cig_params->cig_id; 10559 cig->num_cis = cig_params->num_cis; 10560 cig->params = cig_params; 10561 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10562 for (i=0;i<cig->num_cis;i++){ 10563 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10564 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10565 cig->cis_setup_active[i] = false; 10566 cig->cis_established[i] = false; 10567 } 10568 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10569 10570 hci_run(); 10571 10572 return ERROR_CODE_SUCCESS; 10573 } 10574 10575 uint8_t gap_cig_remove(uint8_t cig_id){ 10576 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10577 if (cig == NULL){ 10578 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10579 } 10580 10581 // close active CIS 10582 uint8_t i; 10583 for (i=0;i<cig->num_cis;i++){ 10584 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10585 if (stream != NULL){ 10586 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10587 } 10588 } 10589 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10590 10591 hci_run(); 10592 10593 return ERROR_CODE_SUCCESS; 10594 } 10595 10596 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10597 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10598 if (cig == NULL){ 10599 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10600 } 10601 10602 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10603 return ERROR_CODE_COMMAND_DISALLOWED; 10604 } 10605 10606 // store ACL Connection Handles 10607 uint8_t i; 10608 for (i=0;i<cig->num_cis;i++){ 10609 // check that all con handles exist and store 10610 hci_con_handle_t cis_handle = cis_con_handles[i]; 10611 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10612 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10613 } 10614 uint8_t j; 10615 bool found = false; 10616 for (j=0;j<cig->num_cis;j++){ 10617 if (cig->cis_con_handles[j] == cis_handle){ 10618 cig->acl_con_handles[j] = acl_con_handles[j]; 10619 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10620 btstack_assert(iso_stream != NULL); 10621 iso_stream->acl_handle = acl_con_handles[j]; 10622 found = true; 10623 break; 10624 } 10625 } 10626 if (!found){ 10627 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10628 } 10629 } 10630 10631 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10632 hci_run(); 10633 10634 return ERROR_CODE_SUCCESS; 10635 } 10636 10637 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10638 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10639 if (iso_stream == NULL){ 10640 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10641 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10642 } 10643 10644 // set next state and continue 10645 iso_stream->state = state; 10646 hci_run(); 10647 return ERROR_CODE_SUCCESS; 10648 } 10649 10650 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10651 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10652 } 10653 10654 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10655 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10656 } 10657 10658 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10659 10660 // GAP Privacy - notify clients before random address update 10661 10662 static bool gap_privacy_client_all_ready(void){ 10663 // check if all ready 10664 btstack_linked_list_iterator_t it; 10665 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10666 while (btstack_linked_list_iterator_has_next(&it)) { 10667 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10668 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10669 return false; 10670 } 10671 } 10672 return true; 10673 } 10674 10675 static void gap_privacy_clients_handle_ready(void){ 10676 // clear 'ready' 10677 btstack_linked_list_iterator_t it; 10678 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10679 while (btstack_linked_list_iterator_has_next(&it)) { 10680 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10681 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10682 } 10683 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10684 hci_run(); 10685 } 10686 10687 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10688 btstack_linked_list_iterator_t it; 10689 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10690 while (btstack_linked_list_iterator_has_next(&it)) { 10691 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10692 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10693 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10694 (*client->callback)(client, new_random_address); 10695 } 10696 } 10697 if (gap_privacy_client_all_ready()){ 10698 gap_privacy_clients_handle_ready(); 10699 } 10700 } 10701 10702 void gap_privacy_client_register(gap_privacy_client_t * client){ 10703 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10704 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10705 } 10706 10707 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10708 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10709 if (gap_privacy_client_all_ready()){ 10710 gap_privacy_clients_handle_ready(); 10711 } 10712 } 10713 10714 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10715 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10716 } 10717 10718 #endif /* ENABLE_BLE */ 10719 10720 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10721 void hci_setup_test_connections_fuzz(void){ 10722 hci_connection_t * conn; 10723 10724 // default address: 66:55:44:33:00:01 10725 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10726 10727 // setup Controller info 10728 hci_stack->num_cmd_packets = 255; 10729 hci_stack->acl_packets_total_num = 255; 10730 10731 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10732 addr[5] = 0x01; 10733 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10734 conn->con_handle = addr[5]; 10735 conn->state = RECEIVED_CONNECTION_REQUEST; 10736 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10737 10738 // setup incoming Classic SCO connection with con handle 0x0002 10739 addr[5] = 0x02; 10740 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, 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 ready Classic ACL connection with con handle 0x0003 10746 addr[5] = 0x03; 10747 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10748 conn->con_handle = addr[5]; 10749 conn->state = OPEN; 10750 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10751 10752 // setup ready Classic SCO connection with con handle 0x0004 10753 addr[5] = 0x04; 10754 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, 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 LE ACL connection with con handle 0x005 and public address 10760 addr[5] = 0x05; 10761 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10762 conn->con_handle = addr[5]; 10763 conn->state = OPEN; 10764 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10765 conn->sm_connection.sm_connection_encrypted = 1; 10766 } 10767 10768 void hci_free_connections_fuzz(void){ 10769 btstack_linked_list_iterator_t it; 10770 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10771 while (btstack_linked_list_iterator_has_next(&it)){ 10772 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10773 btstack_linked_list_iterator_remove(&it); 10774 btstack_memory_hci_connection_free(con); 10775 } 10776 } 10777 void hci_simulate_working_fuzz(void){ 10778 hci_stack->le_scanning_param_update = false; 10779 hci_init_done(); 10780 hci_stack->num_cmd_packets = 255; 10781 } 10782 #endif 10783