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 1700 hci_stack->last_cmd_opcode = opcode; 1701 hci_send_prepared_cmd_packet(); 1702 } 1703 1704 static void gap_run_set_eir_data(void){ 1705 hci_reserve_packet_buffer(); 1706 uint8_t * packet = hci_stack->hci_packet_buffer; 1707 // construct HCI Command in-place and send 1708 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1709 uint16_t offset = 0; 1710 packet[offset++] = opcode & 0xff; 1711 packet[offset++] = opcode >> 8; 1712 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1713 packet[offset++] = 0; // FEC not required 1714 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1715 if (hci_stack->eir_data){ 1716 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1717 ad_context_t context; 1718 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1719 uint8_t data_type = ad_iterator_get_data_type(&context); 1720 uint8_t size = ad_iterator_get_data_len(&context); 1721 const uint8_t *data = ad_iterator_get_data(&context); 1722 // copy item 1723 packet[offset++] = size + 1; 1724 packet[offset++] = data_type; 1725 memcpy(&packet[offset], data, size); 1726 // update name item 1727 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1728 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1729 } 1730 offset += size; 1731 } 1732 } else { 1733 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1734 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1735 packet[offset++] = bytes_to_copy + 1; 1736 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1737 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1738 // expand '00:00:00:00:00:00' in name with bd_addr 1739 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1740 } 1741 1742 hci_stack->last_cmd_opcode = opcode; 1743 hci_send_prepared_cmd_packet(); 1744 } 1745 1746 static void hci_run_gap_tasks_classic(void){ 1747 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1748 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1749 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1750 return; 1751 } 1752 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1753 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1754 gap_run_set_local_name(); 1755 return; 1756 } 1757 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1758 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1759 gap_run_set_eir_data(); 1760 return; 1761 } 1762 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1763 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1764 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1765 return; 1766 } 1767 // write page scan activity 1768 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1769 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1770 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1771 return; 1772 } 1773 // write page scan type 1774 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1775 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1776 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1777 return; 1778 } 1779 // write page timeout 1780 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1781 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1782 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1783 return; 1784 } 1785 // send scan enable 1786 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1787 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1788 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1789 return; 1790 } 1791 // send write scan activity 1792 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1793 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1794 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1795 return; 1796 } 1797 // send write inquiry transmit power level 1798 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1799 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1800 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1801 return; 1802 } 1803 } 1804 #endif 1805 1806 #ifndef HAVE_HOST_CONTROLLER_API 1807 1808 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1809 if (!hci_stack->config) return 0; 1810 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1811 // Limit baud rate for Broadcom chipsets to 3 mbps 1812 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1813 baud_rate = 3000000; 1814 } 1815 return baud_rate; 1816 } 1817 1818 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1819 UNUSED(ds); 1820 1821 switch (hci_stack->substate){ 1822 case HCI_INIT_W4_SEND_RESET: 1823 log_info("Resend HCI Reset"); 1824 hci_stack->substate = HCI_INIT_SEND_RESET; 1825 hci_stack->num_cmd_packets = 1; 1826 hci_run(); 1827 break; 1828 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1829 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1830 if (hci_stack->hci_transport->reset_link){ 1831 hci_stack->hci_transport->reset_link(); 1832 } 1833 1834 /* fall through */ 1835 1836 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1837 log_info("Resend HCI Reset - CSR Warm Boot"); 1838 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1839 hci_stack->num_cmd_packets = 1; 1840 hci_run(); 1841 break; 1842 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1843 if (hci_stack->hci_transport->set_baudrate){ 1844 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1845 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1846 hci_stack->hci_transport->set_baudrate(baud_rate); 1847 } 1848 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1849 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1850 if (hci_stack->hci_transport->reset_link){ 1851 log_info("Link Reset"); 1852 hci_stack->hci_transport->reset_link(); 1853 } 1854 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1855 hci_run(); 1856 } 1857 break; 1858 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1859 // otherwise continue 1860 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1861 hci_send_cmd(&hci_read_local_supported_commands); 1862 break; 1863 default: 1864 break; 1865 } 1866 } 1867 #endif 1868 1869 static void hci_initializing_next_state(void){ 1870 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1871 } 1872 1873 static void hci_init_done(void){ 1874 // done. tell the app 1875 log_info("hci_init_done -> HCI_STATE_WORKING"); 1876 hci_stack->state = HCI_STATE_WORKING; 1877 hci_emit_state(); 1878 } 1879 1880 // assumption: hci_can_send_command_packet_now() == true 1881 static void hci_initializing_run(void){ 1882 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1883 1884 if (!hci_can_send_command_packet_now()) return; 1885 1886 #ifndef HAVE_HOST_CONTROLLER_API 1887 bool need_baud_change = hci_stack->config 1888 && hci_stack->chipset 1889 && hci_stack->chipset->set_baudrate_command 1890 && hci_stack->hci_transport->set_baudrate 1891 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1892 #endif 1893 1894 switch (hci_stack->substate){ 1895 case HCI_INIT_SEND_RESET: 1896 hci_state_reset(); 1897 1898 #ifndef HAVE_HOST_CONTROLLER_API 1899 // prepare reset if command complete not received in 100ms 1900 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1901 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1902 btstack_run_loop_add_timer(&hci_stack->timeout); 1903 #endif 1904 // send command 1905 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1906 hci_send_cmd(&hci_reset); 1907 break; 1908 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1909 hci_send_cmd(&hci_read_local_version_information); 1910 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1911 break; 1912 1913 #ifndef HAVE_HOST_CONTROLLER_API 1914 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1915 hci_state_reset(); 1916 // prepare reset if command complete not received in 100ms 1917 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1918 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1919 btstack_run_loop_add_timer(&hci_stack->timeout); 1920 // send command 1921 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1922 hci_send_cmd(&hci_reset); 1923 break; 1924 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1925 hci_state_reset(); 1926 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1927 hci_send_cmd(&hci_reset); 1928 break; 1929 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1930 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1931 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1932 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1933 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1934 hci_send_prepared_cmd_packet(); 1935 break; 1936 } 1937 case HCI_INIT_SET_BD_ADDR: 1938 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1939 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1940 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1941 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1942 hci_send_prepared_cmd_packet(); 1943 break; 1944 case HCI_INIT_SEND_READ_LOCAL_NAME: 1945 #ifdef ENABLE_CLASSIC 1946 hci_send_cmd(&hci_read_local_name); 1947 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1948 break; 1949 #endif 1950 /* fall through */ 1951 1952 case HCI_INIT_SEND_BAUD_CHANGE: 1953 if (need_baud_change) { 1954 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1955 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1956 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1957 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1958 hci_send_prepared_cmd_packet(); 1959 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1960 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1961 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1962 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1963 btstack_run_loop_add_timer(&hci_stack->timeout); 1964 } 1965 break; 1966 } 1967 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1968 1969 /* fall through */ 1970 1971 case HCI_INIT_CUSTOM_INIT: 1972 case HCI_INIT_CUSTOM_PRE_INIT: 1973 // Custom initialization 1974 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1975 hci_reserve_packet_buffer(); 1976 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1977 bool send_cmd = false; 1978 switch (hci_stack->chipset_result){ 1979 case BTSTACK_CHIPSET_VALID_COMMAND: 1980 send_cmd = true; 1981 switch (hci_stack->substate){ 1982 case HCI_INIT_CUSTOM_INIT: 1983 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1984 break; 1985 case HCI_INIT_CUSTOM_PRE_INIT: 1986 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1987 break; 1988 default: 1989 btstack_assert(false); 1990 break; 1991 } 1992 break; 1993 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1994 send_cmd = true; 1995 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1996 log_info("CSR Warm Boot"); 1997 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1998 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1999 btstack_run_loop_add_timer(&hci_stack->timeout); 2000 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2001 && hci_stack->config 2002 && hci_stack->chipset 2003 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2004 && hci_stack->hci_transport->set_baudrate 2005 && hci_transport_uart_get_main_baud_rate()){ 2006 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2007 } else { 2008 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2009 } 2010 break; 2011 default: 2012 break; 2013 } 2014 2015 if (send_cmd){ 2016 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 2017 hci_send_prepared_cmd_packet(); 2018 break; 2019 } else { 2020 hci_release_packet_buffer(); 2021 } 2022 log_info("Init script done"); 2023 2024 // Custom Pre-Init complete, start regular init with HCI Reset 2025 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2026 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2027 hci_send_cmd(&hci_reset); 2028 break; 2029 } 2030 2031 // Init script download on Broadcom chipsets causes: 2032 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2033 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2034 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2035 2036 // - baud rate to reset, restore UART baud rate if needed 2037 if (need_baud_change) { 2038 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2039 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2040 hci_stack->hci_transport->set_baudrate(baud_rate); 2041 } 2042 2043 uint16_t bcm_delay_ms = 300; 2044 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2045 // -> Work around: wait here. 2046 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2047 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2048 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2049 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2050 btstack_run_loop_add_timer(&hci_stack->timeout); 2051 break; 2052 } 2053 } 2054 #endif 2055 /* fall through */ 2056 2057 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2058 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2059 hci_send_cmd(&hci_read_local_supported_commands); 2060 break; 2061 case HCI_INIT_READ_BD_ADDR: 2062 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2063 hci_send_cmd(&hci_read_bd_addr); 2064 break; 2065 case HCI_INIT_READ_BUFFER_SIZE: 2066 // only read buffer size if supported 2067 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2068 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2069 hci_send_cmd(&hci_read_buffer_size); 2070 break; 2071 } 2072 2073 /* fall through */ 2074 2075 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2076 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2077 hci_send_cmd(&hci_read_local_supported_features); 2078 break; 2079 2080 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2081 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2082 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2083 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2084 break; 2085 case HCI_INIT_HOST_BUFFER_SIZE: 2086 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2087 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2088 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2089 break; 2090 #endif 2091 2092 case HCI_INIT_SET_EVENT_MASK: 2093 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2094 if (hci_le_supported()){ 2095 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2096 } else { 2097 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2098 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2099 } 2100 break; 2101 2102 case HCI_INIT_SET_EVENT_MASK_2: 2103 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2104 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2105 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2106 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2107 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2108 // Encryption Change Event v2 - bit 25 2109 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2110 break; 2111 } 2112 2113 #ifdef ENABLE_CLASSIC 2114 /* fall through */ 2115 2116 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2117 if (hci_classic_supported() && gap_ssp_supported()){ 2118 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2119 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2120 break; 2121 } 2122 2123 /* fall through */ 2124 2125 case HCI_INIT_WRITE_INQUIRY_MODE: 2126 if (hci_classic_supported()){ 2127 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2128 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2129 break; 2130 } 2131 2132 /* fall through */ 2133 2134 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2135 // skip write secure connections host support if not supported or disabled 2136 if (hci_classic_supported() && hci_stack->secure_connections_enable 2137 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2138 hci_stack->secure_connections_active = true; 2139 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2140 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2141 break; 2142 } 2143 2144 /* fall through */ 2145 2146 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2147 // skip set min encryption key size 2148 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2149 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2150 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2151 break; 2152 } 2153 2154 #ifdef ENABLE_SCO_OVER_HCI 2155 /* fall through */ 2156 2157 // only sent if ENABLE_SCO_OVER_HCI is defined 2158 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2159 // skip write synchronous flow control if not supported 2160 if (hci_classic_supported() 2161 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2162 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2163 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2164 break; 2165 } 2166 /* fall through */ 2167 2168 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2169 // skip write default erroneous data reporting if not supported 2170 if (hci_classic_supported() 2171 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2172 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2173 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2174 break; 2175 } 2176 #endif 2177 2178 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2179 /* fall through */ 2180 2181 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2182 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2183 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2184 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2185 #ifdef ENABLE_SCO_OVER_HCI 2186 log_info("BCM: Route SCO data via HCI transport"); 2187 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2188 #endif 2189 #ifdef ENABLE_SCO_OVER_PCM 2190 log_info("BCM: Route SCO data via PCM interface"); 2191 #ifdef ENABLE_BCM_PCM_WBS 2192 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2193 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2194 #else 2195 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2196 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2197 #endif 2198 #endif 2199 break; 2200 } 2201 #endif 2202 2203 #ifdef ENABLE_SCO_OVER_PCM 2204 /* fall through */ 2205 2206 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2207 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2208 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2209 log_info("BCM: Config PCM interface for I2S"); 2210 #ifdef ENABLE_BCM_PCM_WBS 2211 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2212 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2213 #else 2214 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2215 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2216 #endif 2217 break; 2218 } 2219 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2220 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2221 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2222 log_info("BCM: Config PCM Data format"); 2223 // msb first, fill bits 0, left justified 2224 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2225 break; 2226 } 2227 #ifdef HAVE_BCM_PCM2 2228 case HCI_INIT_BCM_PCM2_SETUP: 2229 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2230 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2231 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2232 uint32_t pcm_clock_freq; 2233 uint8_t ch_0_period; 2234 #ifdef ENABLE_BCM_PCM_WBS 2235 // 512 kHz, resample 8 kHz to 16 khz 2236 pcm_clock_freq = 512000; 2237 ch_0_period = 1; 2238 #else 2239 // 256 khz, 8 khz output 2240 pcm_clock_freq = 256000; 2241 ch_0_period = 0; 2242 #endif 2243 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2244 hci_send_cmd(&hci_bcm_pcm2_setup, 2245 0x00, // Action = Write 2246 0x00, // Test_Options = None 2247 op_mode, // Op_Mode 2248 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2249 pcm_clock_freq, // PCM_Clock_Freq 2250 0x01, // Sync_Signal_Width 2251 0x0F, // Slot_Width 2252 0x01, // NumberOfSlots 2253 0x00, // Bank_0_Fill_Mode = 0s 2254 0x00, // Bank_0_Number_of_Fill_Bits 2255 0x00, // Bank_0_Programmable_Fill_Data 2256 0x00, // Bank_1_Fill_Mode = 0s 2257 0x00, // Bank_1_Number_of_Fill_Bits 2258 0x00, // Bank_1_Programmable_Fill_Data 2259 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2260 0x00, // Ch_0_Slot_Number 2261 0x01, // Ch_1_Slot_Number 2262 0x02, // Ch_2_Slot_Number 2263 0x03, // Ch_3_Slot_Number 2264 0x04, // Ch_4_Slot_Number 2265 ch_0_period, // Ch_0_Period 2266 0x00, // Ch_1_Period 2267 0x00 // Ch_2_Period 2268 ); 2269 break; 2270 } 2271 #endif 2272 #endif /* ENABLE_SCO_OVER_PCM */ 2273 #endif /* ENABLE_CLASSIC */ 2274 2275 #ifdef ENABLE_BLE 2276 /* fall through */ 2277 2278 // LE INIT 2279 case HCI_INIT_LE_READ_BUFFER_SIZE: 2280 if (hci_le_supported()){ 2281 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2282 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2283 hci_send_cmd(&hci_le_read_buffer_size_v2); 2284 } else { 2285 hci_send_cmd(&hci_le_read_buffer_size); 2286 } 2287 break; 2288 } 2289 2290 /* fall through */ 2291 2292 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2293 // skip write le host if not supported (e.g. on LE only EM9301) 2294 if (hci_le_supported() 2295 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2296 // LE Supported Host = 1, Simultaneous Host = 0 2297 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2298 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2299 break; 2300 } 2301 2302 /* fall through */ 2303 2304 case HCI_INIT_LE_SET_EVENT_MASK: 2305 if (hci_le_supported()){ 2306 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2307 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2308 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2309 #else 2310 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2311 #endif 2312 break; 2313 } 2314 #endif 2315 2316 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2317 /* fall through */ 2318 2319 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2320 if (hci_le_supported() 2321 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2322 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2323 hci_send_cmd(&hci_le_read_maximum_data_length); 2324 break; 2325 } 2326 2327 /* fall through */ 2328 2329 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2330 if (hci_le_supported() 2331 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2332 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2333 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2334 break; 2335 } 2336 #endif 2337 2338 #ifdef ENABLE_LE_CENTRAL 2339 /* fall through */ 2340 2341 case HCI_INIT_READ_WHITE_LIST_SIZE: 2342 if (hci_le_supported()){ 2343 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2344 hci_send_cmd(&hci_le_read_white_list_size); 2345 break; 2346 } 2347 2348 #endif 2349 2350 #ifdef ENABLE_LE_PERIPHERAL 2351 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2352 /* fall through */ 2353 2354 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2355 if (hci_le_extended_advertising_supported()){ 2356 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2357 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2358 break; 2359 } 2360 #endif 2361 #endif 2362 /* fall through */ 2363 2364 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2365 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2366 if (hci_le_supported()) { 2367 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2368 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2369 break; 2370 } 2371 #endif 2372 2373 /* fall through */ 2374 2375 case HCI_INIT_DONE: 2376 hci_stack->substate = HCI_INIT_DONE; 2377 // main init sequence complete 2378 #ifdef ENABLE_CLASSIC 2379 // check if initial Classic GAP Tasks are completed 2380 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2381 hci_run_gap_tasks_classic(); 2382 break; 2383 } 2384 #endif 2385 #ifdef ENABLE_BLE 2386 #ifdef ENABLE_LE_CENTRAL 2387 // check if initial LE GAP Tasks are completed 2388 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2389 hci_run_general_gap_le(); 2390 break; 2391 } 2392 #endif 2393 #endif 2394 hci_init_done(); 2395 break; 2396 2397 default: 2398 return; 2399 } 2400 } 2401 2402 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2403 bool command_completed = false; 2404 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2405 uint16_t opcode = little_endian_read_16(packet,3); 2406 if (opcode == hci_stack->last_cmd_opcode){ 2407 command_completed = true; 2408 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2409 } else { 2410 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2411 } 2412 } 2413 2414 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2415 uint8_t status = packet[2]; 2416 uint16_t opcode = little_endian_read_16(packet,4); 2417 if (opcode == hci_stack->last_cmd_opcode){ 2418 if (status){ 2419 command_completed = true; 2420 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2421 } else { 2422 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2423 } 2424 } else { 2425 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2426 } 2427 } 2428 #ifndef HAVE_HOST_CONTROLLER_API 2429 // Vendor == CSR 2430 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2431 // TODO: track actual command 2432 command_completed = true; 2433 } 2434 2435 // Vendor == Toshiba 2436 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2437 // TODO: track actual command 2438 command_completed = true; 2439 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2440 hci_stack->num_cmd_packets = 1; 2441 } 2442 #endif 2443 2444 return command_completed; 2445 } 2446 2447 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2448 2449 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2450 2451 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2452 2453 #ifndef HAVE_HOST_CONTROLLER_API 2454 2455 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2456 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2457 // 2458 // HCI Reset 2459 // Timeout 100 ms 2460 // HCI Reset 2461 // Command Complete Reset 2462 // HCI Read Local Version Information 2463 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2464 // hang... 2465 // 2466 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2467 if (!command_completed 2468 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2469 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2470 2471 uint16_t opcode = little_endian_read_16(packet,3); 2472 if (opcode == hci_reset.opcode){ 2473 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2474 return; 2475 } 2476 } 2477 2478 // CSR & H5 2479 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2480 if (!command_completed 2481 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2482 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2483 2484 uint16_t opcode = little_endian_read_16(packet,3); 2485 if (opcode == hci_reset.opcode){ 2486 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2487 return; 2488 } 2489 } 2490 2491 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2492 // fix: Correct substate and behave as command below 2493 if (command_completed){ 2494 switch (hci_stack->substate){ 2495 case HCI_INIT_SEND_RESET: 2496 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2497 break; 2498 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2499 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2500 break; 2501 default: 2502 break; 2503 } 2504 } 2505 2506 #endif 2507 2508 if (!command_completed) return; 2509 2510 bool need_baud_change = false; 2511 bool need_addr_change = false; 2512 2513 #ifndef HAVE_HOST_CONTROLLER_API 2514 need_baud_change = hci_stack->config 2515 && hci_stack->chipset 2516 && hci_stack->chipset->set_baudrate_command 2517 && hci_stack->hci_transport->set_baudrate 2518 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2519 2520 need_addr_change = hci_stack->custom_bd_addr_set 2521 && hci_stack->chipset 2522 && hci_stack->chipset->set_bd_addr_command; 2523 #endif 2524 2525 switch(hci_stack->substate){ 2526 2527 #ifndef HAVE_HOST_CONTROLLER_API 2528 case HCI_INIT_SEND_RESET: 2529 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2530 // fix: just correct substate and behave as command below 2531 2532 /* fall through */ 2533 #endif 2534 2535 case HCI_INIT_W4_SEND_RESET: 2536 btstack_run_loop_remove_timer(&hci_stack->timeout); 2537 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2538 return; 2539 2540 #ifndef HAVE_HOST_CONTROLLER_API 2541 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2542 // for STLC2500D, baud rate change already happened. 2543 // for others, baud rate gets changed now 2544 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2545 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2546 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2547 hci_stack->hci_transport->set_baudrate(baud_rate); 2548 } 2549 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2550 return; 2551 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2552 btstack_run_loop_remove_timer(&hci_stack->timeout); 2553 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2554 return; 2555 case HCI_INIT_W4_CUSTOM_INIT: 2556 // repeat custom init 2557 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2558 return; 2559 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2560 // repeat custom init 2561 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2562 return; 2563 #endif 2564 2565 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2566 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2567 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2568 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2569 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2570 return; 2571 } 2572 if (need_addr_change){ 2573 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2574 return; 2575 } 2576 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2577 return; 2578 #ifndef HAVE_HOST_CONTROLLER_API 2579 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2580 if (need_baud_change){ 2581 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2582 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2583 hci_stack->hci_transport->set_baudrate(baud_rate); 2584 } 2585 if (need_addr_change){ 2586 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2587 return; 2588 } 2589 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2590 return; 2591 case HCI_INIT_W4_SET_BD_ADDR: 2592 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2593 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2594 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2595 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2596 return; 2597 } 2598 // skipping st warm boot 2599 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2600 return; 2601 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2602 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2603 return; 2604 #endif 2605 2606 case HCI_INIT_DONE: 2607 // set state if we came here by fall through 2608 hci_stack->substate = HCI_INIT_DONE; 2609 return; 2610 2611 default: 2612 break; 2613 } 2614 hci_initializing_next_state(); 2615 } 2616 2617 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2618 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2619 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2620 // check if we have been aware of the HCI connection 2621 switch (conn->state){ 2622 case SENT_CREATE_CONNECTION: 2623 case RECEIVED_CONNECTION_REQUEST: 2624 case ACCEPTED_CONNECTION_REQUEST: 2625 break; 2626 default: 2627 return; 2628 } 2629 2630 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2631 bd_addr_t bd_address; 2632 (void)memcpy(&bd_address, conn->address, 6); 2633 2634 #ifdef ENABLE_CLASSIC 2635 // cache needed data 2636 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2637 #endif 2638 2639 // connection failed, remove entry 2640 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2641 btstack_memory_hci_connection_free( conn ); 2642 2643 #ifdef ENABLE_CLASSIC 2644 // notify client if dedicated bonding 2645 if (notify_dedicated_bonding_failed){ 2646 log_info("hci notify_dedicated_bonding_failed"); 2647 hci_emit_dedicated_bonding_result(bd_address, status); 2648 } 2649 2650 // if authentication error, also delete link key 2651 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2652 gap_drop_link_key_for_bd_addr(bd_address); 2653 } 2654 #else 2655 UNUSED(status); 2656 #endif 2657 } 2658 2659 #ifdef ENABLE_CLASSIC 2660 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2661 // SSP Controller 2662 if (features[6] & (1 << 3)){ 2663 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2664 } 2665 // eSCO 2666 if (features[3] & (1<<7)){ 2667 conn->remote_supported_features[0] |= 1; 2668 } 2669 // Extended features 2670 if (features[7] & (1<<7)){ 2671 conn->remote_supported_features[0] |= 2; 2672 } 2673 // SCO packet types 2674 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2675 } 2676 2677 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2678 // SSP Host 2679 if (features[0] & (1 << 0)){ 2680 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2681 } 2682 // SC Host 2683 if (features[0] & (1 << 3)){ 2684 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2685 } 2686 } 2687 2688 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2689 // SC Controller 2690 if (features[1] & (1 << 0)){ 2691 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2692 } 2693 } 2694 2695 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2696 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2697 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2698 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2699 if (conn->bonding_flags & BONDING_DEDICATED){ 2700 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2701 } 2702 } 2703 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2704 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2705 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2706 } 2707 2708 #endif 2709 2710 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2711 // handle BT initialization 2712 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2713 hci_initializing_event_handler(packet, size); 2714 } 2715 2716 // help with BT sleep 2717 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2718 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2719 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2720 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2721 hci_initializing_next_state(); 2722 } 2723 } 2724 2725 #ifdef ENABLE_CLASSIC 2726 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2727 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2728 conn->requested_security_level = LEVEL_0; 2729 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2730 hci_emit_security_level(conn->con_handle, security_level); 2731 2732 // dedicated bonding 2733 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2734 conn->bonding_flags &= ~BONDING_DEDICATED; 2735 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2736 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2737 // emit dedicated bonding complete, don't disconnect 2738 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2739 #else 2740 // request disconnect, event is emitted after disconnect 2741 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2742 #endif 2743 } 2744 } 2745 2746 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2747 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2748 conn->encryption_key_size = encryption_key_size; 2749 2750 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2751 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2752 hci_handle_mutual_authentication_completed(conn); 2753 } else { 2754 // otherwise trigger remote feature request and send authentication request 2755 hci_trigger_remote_features_for_connection(conn); 2756 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2757 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2758 } 2759 } 2760 } 2761 #endif 2762 2763 static void hci_store_local_supported_commands(const uint8_t * packet){ 2764 // create mapping table 2765 #define X(name, offset, bit) { offset, bit }, 2766 static struct { 2767 uint8_t byte_offset; 2768 uint8_t bit_position; 2769 } supported_hci_commands_map [] = { 2770 SUPPORTED_HCI_COMMANDS 2771 }; 2772 #undef X 2773 2774 // create names for debug purposes 2775 #ifdef ENABLE_LOG_DEBUG 2776 #define X(name, offset, bit) #name, 2777 static const char * command_names[] = { 2778 SUPPORTED_HCI_COMMANDS 2779 }; 2780 #undef X 2781 #endif 2782 2783 hci_stack->local_supported_commands = 0; 2784 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2785 uint16_t i; 2786 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2787 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2788 #ifdef ENABLE_LOG_DEBUG 2789 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); 2790 #else 2791 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2792 #endif 2793 hci_stack->local_supported_commands |= (1LU << i); 2794 } 2795 } 2796 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2797 } 2798 2799 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2800 UNUSED(size); 2801 2802 uint8_t status = 0; 2803 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2804 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2805 } 2806 uint16_t manufacturer; 2807 #ifdef ENABLE_CLASSIC 2808 hci_connection_t * conn; 2809 #endif 2810 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2811 hci_con_handle_t handle; 2812 #endif 2813 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2814 le_audio_cig_t * cig; 2815 #endif 2816 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2817 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2818 #endif 2819 2820 // get num cmd packets - limit to 1 to reduce complexity 2821 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2822 2823 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2824 switch (opcode){ 2825 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2826 if (status) break; 2827 // terminate, name 248 chars 2828 packet[6+248] = 0; 2829 log_info("local name: %s", &packet[6]); 2830 break; 2831 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2832 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2833 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2834 uint16_t acl_len = little_endian_read_16(packet, 6); 2835 uint16_t sco_len = packet[8]; 2836 2837 // determine usable ACL/SCO payload size 2838 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2839 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2840 2841 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2842 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2843 2844 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2845 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2846 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2847 } 2848 break; 2849 case HCI_OPCODE_HCI_READ_RSSI: 2850 if (status == ERROR_CODE_SUCCESS){ 2851 uint8_t event[5]; 2852 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2853 event[1] = 3; 2854 (void)memcpy(&event[2], &packet[6], 3); 2855 hci_emit_event(event, sizeof(event), 1); 2856 } 2857 break; 2858 #ifdef ENABLE_BLE 2859 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2860 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2861 hci_stack->le_iso_packets_total_num = packet[11]; 2862 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2863 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2864 2865 /* fall through */ 2866 2867 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2868 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2869 hci_stack->le_acl_packets_total_num = packet[8]; 2870 // determine usable ACL payload size 2871 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2872 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2873 } 2874 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); 2875 break; 2876 #endif 2877 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2878 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2879 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2880 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2881 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); 2882 break; 2883 #endif 2884 #ifdef ENABLE_LE_CENTRAL 2885 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2886 hci_stack->le_whitelist_capacity = packet[6]; 2887 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2888 break; 2889 #endif 2890 #ifdef ENABLE_LE_PERIPHERAL 2891 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2892 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2893 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2894 break; 2895 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2896 if (hci_stack->le_advertising_set_in_current_command != 0) { 2897 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2898 hci_stack->le_advertising_set_in_current_command = 0; 2899 if (advertising_set == NULL) break; 2900 uint8_t adv_status = packet[6]; 2901 uint8_t tx_power = packet[7]; 2902 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 }; 2903 if (adv_status == 0){ 2904 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2905 } 2906 hci_emit_event(event, sizeof(event), 1); 2907 } 2908 break; 2909 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2910 if (hci_stack->le_advertising_set_in_current_command != 0) { 2911 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2912 hci_stack->le_advertising_set_in_current_command = 0; 2913 if (advertising_set == NULL) break; 2914 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2915 if (status == 0){ 2916 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2917 } 2918 hci_emit_event(event, sizeof(event), 1); 2919 } 2920 break; 2921 #endif 2922 #endif 2923 case HCI_OPCODE_HCI_READ_BD_ADDR: 2924 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2925 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2926 #ifdef ENABLE_CLASSIC 2927 if (hci_stack->link_key_db){ 2928 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2929 } 2930 #endif 2931 break; 2932 #ifdef ENABLE_CLASSIC 2933 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2934 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2935 break; 2936 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2937 if (status == ERROR_CODE_SUCCESS) { 2938 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2939 } else { 2940 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2941 } 2942 break; 2943 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2944 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2945 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2946 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2947 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2948 hci_emit_event(event, sizeof(event), 1); 2949 } 2950 break; 2951 #endif 2952 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2953 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2954 2955 #ifdef ENABLE_CLASSIC 2956 // determine usable ACL packet types based on host buffer size and supported features 2957 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]); 2958 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2959 // determine usable SCO packet types based on supported features 2960 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2961 &hci_stack->local_supported_features[0]); 2962 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2963 #endif 2964 // Classic/LE 2965 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2966 break; 2967 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2968 manufacturer = little_endian_read_16(packet, 10); 2969 // map Cypress & Infineon to Broadcom 2970 switch (manufacturer){ 2971 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2972 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2973 log_info("Treat Cypress/Infineon as Broadcom"); 2974 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2975 little_endian_store_16(packet, 10, manufacturer); 2976 break; 2977 default: 2978 break; 2979 } 2980 hci_stack->manufacturer = manufacturer; 2981 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2982 break; 2983 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2984 hci_store_local_supported_commands(packet); 2985 break; 2986 #ifdef ENABLE_CLASSIC 2987 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2988 if (status) return; 2989 hci_stack->synchronous_flow_control_enabled = 1; 2990 break; 2991 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2992 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2993 conn = hci_connection_for_handle(handle); 2994 if (conn != NULL) { 2995 uint8_t key_size = 0; 2996 if (status == 0){ 2997 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2998 log_info("Handle %04x key Size: %u", handle, key_size); 2999 } else { 3000 key_size = 1; 3001 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3002 } 3003 hci_handle_read_encryption_key_size_complete(conn, key_size); 3004 } 3005 break; 3006 // assert pairing complete event is emitted. 3007 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3008 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3009 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3010 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3011 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3012 // lookup connection by gap pairing addr 3013 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3014 if (conn == NULL) break; 3015 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3016 break; 3017 3018 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3019 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3020 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3021 uint8_t event[67]; 3022 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3023 event[1] = 65; 3024 (void)memset(&event[2], 0, 65); 3025 if (status == ERROR_CODE_SUCCESS){ 3026 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3027 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3028 event[2] = 3; 3029 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3030 } else { 3031 event[2] = 1; 3032 } 3033 } 3034 hci_emit_event(event, sizeof(event), 0); 3035 break; 3036 } 3037 3038 // note: only needed if user does not provide OOB data 3039 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3040 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3041 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3042 if (conn == NULL) break; 3043 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3044 break; 3045 #endif 3046 #endif 3047 #ifdef ENABLE_BLE 3048 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3049 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3050 // lookup CIG 3051 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3052 if (cig != NULL){ 3053 uint8_t i = 0; 3054 if (status == ERROR_CODE_SUCCESS){ 3055 // assign CIS handles to pre-allocated CIS 3056 btstack_linked_list_iterator_t it; 3057 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3058 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3059 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3060 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3061 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3062 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3063 iso_stream->cis_handle = cis_handle; 3064 cig->cis_con_handles[i] = cis_handle; 3065 i++; 3066 } 3067 } 3068 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3069 hci_emit_cig_created(cig, status); 3070 } else { 3071 hci_emit_cig_created(cig, status); 3072 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3073 } 3074 } 3075 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3076 break; 3077 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3078 if (status != ERROR_CODE_SUCCESS){ 3079 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3080 } 3081 break; 3082 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3083 if (status != ERROR_CODE_SUCCESS){ 3084 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3085 } 3086 break; 3087 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3088 // lookup BIG by state 3089 btstack_linked_list_iterator_t it; 3090 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3091 while (btstack_linked_list_iterator_has_next(&it)) { 3092 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3093 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3094 if (status == ERROR_CODE_SUCCESS){ 3095 big->state_vars.next_bis++; 3096 if (big->state_vars.next_bis == big->num_bis){ 3097 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3098 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3099 } else { 3100 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3101 } 3102 } else { 3103 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3104 big->state_vars.status = status; 3105 } 3106 return; 3107 } 3108 } 3109 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3110 while (btstack_linked_list_iterator_has_next(&it)) { 3111 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3112 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3113 if (status == ERROR_CODE_SUCCESS){ 3114 big_sync->state_vars.next_bis++; 3115 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3116 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3117 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3118 } else { 3119 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3120 } 3121 } else { 3122 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3123 big_sync->state_vars.status = status; 3124 } 3125 return; 3126 } 3127 } 3128 // Lookup CIS via active group operation 3129 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3130 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3131 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3132 3133 // lookup CIS by state 3134 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3135 while (btstack_linked_list_iterator_has_next(&it)){ 3136 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3137 handle = iso_stream->cis_handle; 3138 bool emit_cis_created = false; 3139 switch (iso_stream->state){ 3140 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3141 if (status != ERROR_CODE_SUCCESS){ 3142 emit_cis_created = true; 3143 break; 3144 } 3145 if (iso_stream->max_sdu_c_to_p > 0){ 3146 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3147 } else { 3148 emit_cis_created = true; 3149 } 3150 break; 3151 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3152 emit_cis_created = true; 3153 break; 3154 default: 3155 break; 3156 } 3157 if (emit_cis_created){ 3158 hci_cis_handle_created(iso_stream, status); 3159 } 3160 } 3161 } else { 3162 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3163 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3164 if (cig != NULL) { 3165 // emit cis created if all ISO Paths have been created 3166 // assume we are central 3167 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3168 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3169 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3170 // if outgoing has been setup, or incoming was setup but outgoing not required 3171 if ((cis_direction == 1) || (outgoing_needed == false)){ 3172 // lookup iso stream by cig/cis 3173 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3174 while (btstack_linked_list_iterator_has_next(&it)) { 3175 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3176 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3177 hci_cis_handle_created(iso_stream, status); 3178 } 3179 } 3180 } 3181 // next state 3182 cig->state_vars.next_cis++; 3183 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3184 } 3185 } 3186 } 3187 break; 3188 } 3189 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3190 // lookup BIG by state 3191 btstack_linked_list_iterator_t it; 3192 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3193 while (btstack_linked_list_iterator_has_next(&it)) { 3194 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3195 uint8_t big_handle = big_sync->big_handle; 3196 switch (big_sync->state){ 3197 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3198 btstack_linked_list_iterator_remove(&it); 3199 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3200 return; 3201 default: 3202 btstack_linked_list_iterator_remove(&it); 3203 hci_emit_big_sync_stopped(big_handle); 3204 return; 3205 } 3206 } 3207 break; 3208 } 3209 #endif 3210 #endif 3211 default: 3212 break; 3213 } 3214 } 3215 3216 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3217 UNUSED(size); 3218 3219 // get num cmd packets - limit to 1 to reduce complexity 3220 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3221 3222 // get opcode and command status 3223 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3224 3225 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3226 uint8_t status = hci_event_command_status_get_status(packet); 3227 #endif 3228 3229 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3230 bd_addr_type_t addr_type; 3231 bd_addr_t addr; 3232 #endif 3233 3234 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3235 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3236 #endif 3237 3238 switch (opcode){ 3239 #ifdef ENABLE_CLASSIC 3240 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3241 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3242 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3243 #endif 3244 #ifdef ENABLE_LE_CENTRAL 3245 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3246 #endif 3247 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3248 addr_type = hci_stack->outgoing_addr_type; 3249 memcpy(addr, hci_stack->outgoing_addr, 6); 3250 3251 // reset outgoing address info 3252 memset(hci_stack->outgoing_addr, 0, 6); 3253 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3254 3255 // on error 3256 if (status != ERROR_CODE_SUCCESS){ 3257 #ifdef ENABLE_LE_CENTRAL 3258 if (hci_is_le_connection_type(addr_type)){ 3259 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3260 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3261 } 3262 #endif 3263 // error => outgoing connection failed 3264 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3265 if (conn != NULL){ 3266 hci_handle_connection_failed(conn, status); 3267 } 3268 } 3269 break; 3270 #endif 3271 #ifdef ENABLE_CLASSIC 3272 case HCI_OPCODE_HCI_INQUIRY: 3273 if (status == ERROR_CODE_SUCCESS) { 3274 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3275 } else { 3276 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3277 } 3278 break; 3279 #endif 3280 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3281 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3282 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3283 if (status == ERROR_CODE_SUCCESS){ 3284 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3285 } else { 3286 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3287 } 3288 break; 3289 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3290 default: 3291 break; 3292 } 3293 } 3294 3295 #ifdef ENABLE_BLE 3296 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3297 gap_event[0] = HCI_EVENT_META_GAP; 3298 gap_event[1] = 36 - 2; 3299 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3300 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3301 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3302 memcpy(&gap_event[3], &hci_event[3], 11); 3303 memset(&gap_event[14], 0, 12); 3304 memcpy(&gap_event[26], &hci_event[14], 7); 3305 memset(&gap_event[33], 0xff, 3); 3306 break; 3307 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3308 memcpy(&gap_event[3], &hci_event[3], 30); 3309 memset(&gap_event[33], 0xff, 3); 3310 break; 3311 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3312 memcpy(&gap_event[3], &hci_event[3], 33); 3313 break; 3314 default: 3315 btstack_unreachable(); 3316 break; 3317 } 3318 } 3319 3320 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3321 bd_addr_t addr; 3322 bd_addr_type_t addr_type; 3323 hci_connection_t * conn; 3324 3325 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3326 uint8_t gap_event[36]; 3327 hci_create_gap_connection_complete_event(hci_event, gap_event); 3328 3329 // read fields 3330 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3331 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3332 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3333 3334 // Connection management 3335 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3336 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3337 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3338 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3339 3340 #ifdef ENABLE_LE_CENTRAL 3341 // handle error: error is reported only to the initiator -> outgoing connection 3342 if (status){ 3343 3344 // handle cancelled outgoing connection 3345 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3346 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3347 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3348 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3349 // reset state 3350 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3351 // get outgoing connection conn struct for direct connect 3352 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3353 conn = gap_get_outgoing_le_connection(); 3354 conn->state = SEND_CREATE_CONNECTION; 3355 } 3356 } 3357 3358 // free connection if cancelled by user (request == IDLE) 3359 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 3360 // remove entry 3361 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3362 btstack_memory_hci_connection_free( conn ); 3363 } 3364 return; 3365 } 3366 #endif 3367 3368 // on success, both hosts receive connection complete event 3369 if (role == HCI_ROLE_MASTER){ 3370 #ifdef ENABLE_LE_CENTRAL 3371 // if we're master, it was an outgoing connection 3372 // note: no hci_connection_t object exists yet for connect with whitelist 3373 3374 // if a identity addresses was used without enhanced connection complete event, 3375 // the connection complete event contains the current random address of the peer device. 3376 // This random address is needed in the case of a re-pairing 3377 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3378 conn = gap_get_outgoing_le_connection(); 3379 // if outgoing connection object is available, check if identity address was used. 3380 // if yes, track resolved random address and provide rpa 3381 // note: we don't update hci le subevent connection complete 3382 if (conn != NULL){ 3383 if (hci_is_le_identity_address_type(conn->address_type)){ 3384 memcpy(&gap_event[20], &gap_event[8], 6); 3385 gap_event[7] = conn->address_type; 3386 reverse_bd_addr(conn->address, &gap_event[8]); 3387 } 3388 } 3389 } 3390 3391 // we're done with it 3392 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3393 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3394 #endif 3395 } else { 3396 #ifdef ENABLE_LE_PERIPHERAL 3397 // if we're slave, it was an incoming connection, advertisements have stopped 3398 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3399 #endif 3400 } 3401 3402 // LE connections are auto-accepted, so just create a connection if there isn't one already 3403 if (!conn){ 3404 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3405 } 3406 3407 // no memory, sorry. 3408 if (!conn){ 3409 return; 3410 } 3411 3412 conn->state = OPEN; 3413 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3414 conn->le_connection_interval = conn_interval; 3415 3416 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3417 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3418 3419 #ifdef ENABLE_LE_PERIPHERAL 3420 if (role == HCI_ROLE_SLAVE){ 3421 hci_update_advertisements_enabled_for_current_roles(); 3422 } 3423 #endif 3424 3425 // init unenhanced att bearer mtu 3426 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3427 conn->att_connection.mtu_exchanged = false; 3428 3429 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3430 3431 // restart timer 3432 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3433 // btstack_run_loop_add_timer(&conn->timeout); 3434 3435 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3436 3437 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3438 hci_emit_event(gap_event, sizeof(gap_event), 1); 3439 3440 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3441 hci_emit_nr_connections_changed(); 3442 } 3443 #endif 3444 3445 #ifdef ENABLE_CLASSIC 3446 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){ 3447 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3448 // LEVEL_4 is tested by l2cap 3449 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3450 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3451 if (level >= LEVEL_3){ 3452 // MITM not possible without keyboard or display 3453 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3454 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3455 3456 // MITM possible if one side has keyboard and the other has keyboard or display 3457 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3458 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3459 3460 // MITM not possible if one side has only display and other side has no keyboard 3461 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3462 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3463 } 3464 // LEVEL 2 requires SSP, which is a given 3465 return true; 3466 } 3467 3468 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3469 // get requested security level 3470 gap_security_level_t requested_security_level = conn->requested_security_level; 3471 if (hci_stack->gap_secure_connections_only_mode){ 3472 requested_security_level = LEVEL_4; 3473 } 3474 3475 // assess security: LEVEL 4 requires SC 3476 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3477 if ((requested_security_level == LEVEL_4) && 3478 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3479 !hci_remote_sc_enabled(conn)){ 3480 log_info("Level 4 required, but SC not supported -> abort"); 3481 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3482 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3483 return; 3484 } 3485 3486 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3487 // - GAP/MOD/NBON/BV-02-C 3488 // - GAP/DM/NBON/BV-01-C 3489 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3490 switch (conn->io_cap_response_auth_req){ 3491 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3492 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3493 if (hci_stack->bondable == false){ 3494 log_info("Dedicated vs. non-bondable -> abort"); 3495 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3496 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3497 return; 3498 } 3499 default: 3500 break; 3501 } 3502 } 3503 3504 // assess security based on io capabilities 3505 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3506 // responder: fully validate io caps of both sides as well as OOB data 3507 bool security_possible = false; 3508 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3509 3510 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3511 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3512 // so we merge the OOB data availability 3513 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3514 if (conn->classic_oob_c_192 != NULL){ 3515 have_oob_data |= 1; 3516 } 3517 if (conn->classic_oob_c_256 != NULL){ 3518 have_oob_data |= 2; 3519 } 3520 // for up to Level 3, either P-192 as well as P-256 will do 3521 // 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 3522 // if remote does not SC, we should not receive P-256 data either 3523 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3524 security_possible = true; 3525 } 3526 // for Level 4, P-256 is needed 3527 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3528 security_possible = true; 3529 } 3530 #endif 3531 3532 if (security_possible == false){ 3533 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3534 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3535 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3536 return; 3537 } 3538 } else { 3539 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3540 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3541 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3542 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3543 log_info("Level 3+ required, but no input/output -> abort"); 3544 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3545 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3546 return; 3547 } 3548 #endif 3549 #endif 3550 } 3551 3552 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3553 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3554 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3555 } else { 3556 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3557 } 3558 #endif 3559 } 3560 3561 #endif 3562 3563 static void event_handler(uint8_t *packet, uint16_t size){ 3564 3565 uint16_t event_length = packet[1]; 3566 3567 // assert packet is complete 3568 if (size != (event_length + 2u)){ 3569 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3570 return; 3571 } 3572 3573 hci_con_handle_t handle; 3574 hci_connection_t * conn; 3575 int i; 3576 3577 #ifdef ENABLE_CLASSIC 3578 hci_link_type_t link_type; 3579 bd_addr_t addr; 3580 bd_addr_type_t addr_type; 3581 #endif 3582 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3583 hci_iso_stream_t * iso_stream; 3584 le_audio_big_t * big; 3585 le_audio_big_sync_t * big_sync; 3586 #endif 3587 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3588 btstack_linked_list_iterator_t it; 3589 #endif 3590 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3591 uint8_t advertising_handle; 3592 #endif 3593 3594 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3595 3596 switch (hci_event_packet_get_type(packet)) { 3597 3598 case HCI_EVENT_COMMAND_COMPLETE: 3599 handle_command_complete_event(packet, size); 3600 break; 3601 3602 case HCI_EVENT_COMMAND_STATUS: 3603 handle_command_status_event(packet, size); 3604 break; 3605 3606 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3607 if (size < 3) return; 3608 uint16_t num_handles = packet[2]; 3609 if (size != (3u + num_handles * 4u)) return; 3610 #ifdef ENABLE_CLASSIC 3611 bool notify_sco = false; 3612 #endif 3613 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3614 bool notify_iso = false; 3615 #endif 3616 uint16_t offset = 3; 3617 for (i=0; i<num_handles;i++){ 3618 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3619 offset += 2u; 3620 uint16_t num_packets = little_endian_read_16(packet, offset); 3621 offset += 2u; 3622 3623 conn = hci_connection_for_handle(handle); 3624 if (conn != NULL) { 3625 3626 if (conn->num_packets_sent >= num_packets) { 3627 conn->num_packets_sent -= num_packets; 3628 } else { 3629 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3630 conn->num_packets_sent = 0; 3631 } 3632 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3633 #ifdef ENABLE_CLASSIC 3634 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3635 notify_sco = true; 3636 } 3637 #endif 3638 } 3639 3640 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3641 hci_controller_dump_packets(); 3642 #endif 3643 3644 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3645 if (conn == NULL){ 3646 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3647 if (iso_stream != NULL){ 3648 if (iso_stream->num_packets_sent >= num_packets) { 3649 iso_stream->num_packets_sent -= num_packets; 3650 } else { 3651 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3652 iso_stream->num_packets_sent = 0; 3653 } 3654 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3655 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3656 if (big != NULL){ 3657 big->num_completed_timestamp_current_valid = true; 3658 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3659 } 3660 } 3661 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3662 num_packets, handle, iso_stream->num_packets_sent); 3663 notify_iso = true; 3664 } 3665 } 3666 #endif 3667 } 3668 3669 #ifdef ENABLE_CLASSIC 3670 if (notify_sco){ 3671 hci_notify_if_sco_can_send_now(); 3672 } 3673 #endif 3674 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3675 if (notify_iso){ 3676 hci_iso_notify_can_send_now(); 3677 } 3678 #endif 3679 break; 3680 } 3681 3682 #ifdef ENABLE_CLASSIC 3683 case HCI_EVENT_FLUSH_OCCURRED: 3684 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3685 handle = hci_event_flush_occurred_get_handle(packet); 3686 conn = hci_connection_for_handle(handle); 3687 if (conn) { 3688 log_info("Flush occurred, disconnect 0x%04x", handle); 3689 conn->state = SEND_DISCONNECT; 3690 } 3691 break; 3692 3693 case HCI_EVENT_INQUIRY_COMPLETE: 3694 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3695 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3696 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3697 hci_emit_event(event, sizeof(event), 1); 3698 } 3699 break; 3700 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3701 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3702 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3703 } 3704 break; 3705 case HCI_EVENT_CONNECTION_REQUEST: 3706 reverse_bd_addr(&packet[2], addr); 3707 link_type = (hci_link_type_t) packet[11]; 3708 3709 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3710 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3711 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3712 bd_addr_copy(hci_stack->decline_addr, addr); 3713 break; 3714 } 3715 3716 if (hci_stack->gap_classic_accept_callback != NULL){ 3717 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3718 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3719 bd_addr_copy(hci_stack->decline_addr, addr); 3720 break; 3721 } 3722 } 3723 3724 // TODO: eval COD 8-10 3725 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3726 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3727 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3728 if (!conn) { 3729 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3730 } 3731 if (!conn) { 3732 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3733 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3734 bd_addr_copy(hci_stack->decline_addr, addr); 3735 hci_run(); 3736 // avoid event to higher layer 3737 return; 3738 } 3739 conn->state = RECEIVED_CONNECTION_REQUEST; 3740 // store info about eSCO 3741 if (link_type == HCI_LINK_TYPE_ESCO){ 3742 conn->remote_supported_features[0] |= 1; 3743 } 3744 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3745 if (addr_type == BD_ADDR_TYPE_SCO){ 3746 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3747 // ACL exists unless fuzzing 3748 if (acl_conn != NULL) { 3749 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3750 } 3751 } 3752 hci_run(); 3753 break; 3754 3755 case HCI_EVENT_CONNECTION_COMPLETE: 3756 // Connection management 3757 reverse_bd_addr(&packet[5], addr); 3758 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3759 addr_type = BD_ADDR_TYPE_ACL; 3760 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3761 if (conn) { 3762 switch (conn->state){ 3763 // expected states 3764 case ACCEPTED_CONNECTION_REQUEST: 3765 case SENT_CREATE_CONNECTION: 3766 break; 3767 // unexpected state -> ignore 3768 default: 3769 // don't forward event to app 3770 return; 3771 } 3772 if (!packet[2]){ 3773 conn->state = OPEN; 3774 conn->con_handle = little_endian_read_16(packet, 3); 3775 3776 // trigger write supervision timeout if we're master 3777 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3778 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3779 } 3780 3781 // trigger write automatic flush timeout 3782 if (hci_stack->automatic_flush_timeout != 0){ 3783 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3784 } 3785 3786 // restart timer 3787 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3788 btstack_run_loop_add_timer(&conn->timeout); 3789 3790 // trigger remote features for dedicated bonding 3791 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3792 hci_trigger_remote_features_for_connection(conn); 3793 } 3794 3795 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3796 3797 hci_emit_nr_connections_changed(); 3798 } else { 3799 // connection failed 3800 hci_handle_connection_failed(conn, packet[2]); 3801 } 3802 } 3803 break; 3804 3805 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3806 reverse_bd_addr(&packet[5], addr); 3807 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3808 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3809 3810 // SCO exists unless fuzzer 3811 if (conn == NULL) break; 3812 3813 if (packet[2] != ERROR_CODE_SUCCESS){ 3814 // connection failed, remove entry 3815 hci_handle_connection_failed(conn, packet[2]); 3816 break; 3817 } 3818 3819 conn->state = OPEN; 3820 conn->con_handle = little_endian_read_16(packet, 3); 3821 3822 // update sco payload length for eSCO connections 3823 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3824 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3825 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3826 } 3827 3828 #ifdef ENABLE_SCO_OVER_HCI 3829 // update SCO 3830 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3831 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3832 } 3833 // trigger can send now 3834 if (hci_have_usb_transport()){ 3835 hci_stack->sco_can_send_now = true; 3836 } 3837 3838 // setup implict sco flow control 3839 conn->sco_tx_ready = 0; 3840 conn->sco_tx_active = 0; 3841 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3842 3843 #endif 3844 #ifdef HAVE_SCO_TRANSPORT 3845 // configure sco transport 3846 if (hci_stack->sco_transport != NULL){ 3847 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3848 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3849 } 3850 #endif 3851 break; 3852 3853 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3854 handle = little_endian_read_16(packet, 3); 3855 conn = hci_connection_for_handle(handle); 3856 if (!conn) break; 3857 if (!packet[2]){ 3858 const uint8_t * features = &packet[5]; 3859 hci_handle_remote_features_page_0(conn, features); 3860 3861 // read extended features if possible 3862 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3863 && ((conn->remote_supported_features[0] & 2) != 0)) { 3864 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3865 break; 3866 } 3867 } 3868 hci_handle_remote_features_received(conn); 3869 break; 3870 3871 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3872 handle = little_endian_read_16(packet, 3); 3873 conn = hci_connection_for_handle(handle); 3874 if (!conn) break; 3875 // status = ok, page = 1 3876 if (!packet[2]) { 3877 uint8_t page_number = packet[5]; 3878 uint8_t maximum_page_number = packet[6]; 3879 const uint8_t * features = &packet[7]; 3880 bool done = false; 3881 switch (page_number){ 3882 case 1: 3883 hci_handle_remote_features_page_1(conn, features); 3884 if (maximum_page_number >= 2){ 3885 // get Secure Connections (Controller) from Page 2 if available 3886 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3887 } else { 3888 // otherwise, assume SC (Controller) == SC (Host) 3889 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3890 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3891 } 3892 done = true; 3893 } 3894 break; 3895 case 2: 3896 hci_handle_remote_features_page_2(conn, features); 3897 done = true; 3898 break; 3899 default: 3900 break; 3901 } 3902 if (!done) break; 3903 } 3904 hci_handle_remote_features_received(conn); 3905 break; 3906 3907 case HCI_EVENT_LINK_KEY_REQUEST: 3908 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3909 hci_event_link_key_request_get_bd_addr(packet, addr); 3910 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3911 if (!conn) break; 3912 3913 // lookup link key in db if not cached 3914 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3915 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3916 } 3917 3918 // response sent by hci_run() 3919 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3920 #endif 3921 break; 3922 3923 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3924 hci_event_link_key_request_get_bd_addr(packet, addr); 3925 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3926 if (!conn) break; 3927 3928 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3929 3930 // CVE-2020-26555: ignore NULL link key 3931 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3932 if (btstack_is_null(&packet[8], 16)) break; 3933 3934 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3935 // Change Connection Encryption keeps link key type 3936 if (link_key_type != CHANGED_COMBINATION_KEY){ 3937 conn->link_key_type = link_key_type; 3938 } 3939 3940 // cache link key. link keys stored in little-endian format for legacy reasons 3941 memcpy(&conn->link_key, &packet[8], 16); 3942 3943 // only store link key: 3944 // - if bondable enabled 3945 if (hci_stack->bondable == false) break; 3946 // - if security level sufficient 3947 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3948 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3949 break; 3950 } 3951 3952 case HCI_EVENT_PIN_CODE_REQUEST: 3953 hci_event_pin_code_request_get_bd_addr(packet, addr); 3954 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3955 if (!conn) break; 3956 3957 hci_pairing_started(conn, false); 3958 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3959 if (!hci_stack->bondable ){ 3960 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3961 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3962 hci_run(); 3963 return; 3964 } 3965 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3966 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3967 log_info("Level 4 required, but SC not supported -> abort"); 3968 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3969 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3970 hci_run(); 3971 return; 3972 } 3973 break; 3974 3975 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3976 hci_event_io_capability_response_get_bd_addr(packet, addr); 3977 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3978 if (!conn) break; 3979 3980 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3981 hci_pairing_started(conn, true); 3982 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3983 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3984 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3985 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3986 #endif 3987 break; 3988 3989 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3990 hci_event_io_capability_response_get_bd_addr(packet, addr); 3991 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3992 if (!conn) break; 3993 3994 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3995 hci_connection_timestamp(conn); 3996 hci_pairing_started(conn, true); 3997 break; 3998 3999 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4000 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4001 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4002 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4003 if (!conn) break; 4004 4005 hci_connection_timestamp(conn); 4006 4007 hci_pairing_started(conn, true); 4008 4009 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4010 break; 4011 #endif 4012 4013 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4014 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4015 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4016 if (!conn) break; 4017 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4018 if (hci_stack->ssp_auto_accept){ 4019 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4020 }; 4021 } else { 4022 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4023 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4024 // don't forward event to app 4025 hci_run(); 4026 return; 4027 } 4028 break; 4029 4030 case HCI_EVENT_USER_PASSKEY_REQUEST: 4031 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4032 if (hci_stack->ssp_auto_accept){ 4033 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4034 }; 4035 break; 4036 4037 case HCI_EVENT_MODE_CHANGE: 4038 handle = hci_event_mode_change_get_handle(packet); 4039 conn = hci_connection_for_handle(handle); 4040 if (!conn) break; 4041 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4042 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4043 break; 4044 #endif 4045 4046 case HCI_EVENT_ENCRYPTION_CHANGE: 4047 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4048 handle = hci_event_encryption_change_get_connection_handle(packet); 4049 conn = hci_connection_for_handle(handle); 4050 if (!conn) break; 4051 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4052 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4053 if (encryption_enabled){ 4054 if (hci_is_le_connection(conn)){ 4055 // For LE, we accept connection as encrypted 4056 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4057 } 4058 #ifdef ENABLE_CLASSIC 4059 else { 4060 4061 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4062 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4063 bool connected_uses_aes_ccm = encryption_enabled == 2; 4064 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4065 #ifdef ENABLE_TESTING_SUPPORT 4066 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4067 // - GAP/SEC/SEM/BI-31-C 4068 // - GAP/SEC/SEM/BI-32-C 4069 // - GAP/SEC/SEM/BI-33-C 4070 4071 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4072 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4073 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4074 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4075 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4076 } 4077 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4078 conn->link_key_type, new_link_key_type); 4079 conn->link_key_type = new_link_key_type; 4080 #else 4081 log_info("SC during pairing, but only E0 now -> abort"); 4082 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4083 break; 4084 #endif 4085 } 4086 4087 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4088 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4089 if (connected_uses_aes_ccm){ 4090 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4091 } 4092 #else 4093 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4094 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4095 // for all operations that require any security. See BIAS attacks. 4096 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4097 #endif 4098 // validate encryption key size 4099 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4100 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4101 // already got encryption key size 4102 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4103 } else { 4104 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4105 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4106 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4107 } else { 4108 // if not, pretend everything is perfect 4109 hci_handle_read_encryption_key_size_complete(conn, 16); 4110 } 4111 } 4112 } 4113 #endif 4114 } else { 4115 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4116 } 4117 } else { 4118 #ifdef ENABLE_CLASSIC 4119 if (!hci_is_le_connection(conn)){ 4120 uint8_t status = hci_event_encryption_change_get_status(packet); 4121 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4122 conn->bonding_flags &= ~BONDING_DEDICATED; 4123 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4124 conn->bonding_status = status; 4125 } 4126 // trigger security update -> level 0 4127 hci_handle_mutual_authentication_completed(conn); 4128 } 4129 #endif 4130 } 4131 4132 break; 4133 4134 #ifdef ENABLE_CLASSIC 4135 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4136 handle = hci_event_authentication_complete_get_connection_handle(packet); 4137 conn = hci_connection_for_handle(handle); 4138 if (!conn) break; 4139 4140 // clear authentication active flag 4141 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4142 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4143 4144 // authenticated only if auth status == 0 4145 if (hci_event_authentication_complete_get_status(packet) == 0){ 4146 // authenticated 4147 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4148 4149 // If not already encrypted, start encryption 4150 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4151 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4152 break; 4153 } 4154 } 4155 4156 // emit updated security level (will be 0 if not authenticated) 4157 hci_handle_mutual_authentication_completed(conn); 4158 break; 4159 4160 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4161 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4162 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4163 if (!conn) break; 4164 4165 // treat successfully paired connection as authenticated 4166 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4167 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4168 } 4169 4170 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4171 break; 4172 #endif 4173 4174 // HCI_EVENT_DISCONNECTION_COMPLETE 4175 // has been split, to first notify stack before shutting connection down 4176 // see end of function, too. 4177 case HCI_EVENT_DISCONNECTION_COMPLETE: 4178 if (packet[2]) break; // status != 0 4179 handle = little_endian_read_16(packet, 3); 4180 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4181 if (hci_stack->acl_fragmentation_total_size > 0u) { 4182 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4183 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4184 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4185 hci_stack->acl_fragmentation_total_size = 0; 4186 hci_stack->acl_fragmentation_pos = 0; 4187 if (release_buffer){ 4188 hci_release_packet_buffer(); 4189 } 4190 } 4191 } 4192 4193 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4194 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4195 if (hci_stack->iso_fragmentation_total_size > 0u) { 4196 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4197 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4198 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4199 hci_stack->iso_fragmentation_total_size = 0; 4200 hci_stack->iso_fragmentation_pos = 0; 4201 if (release_buffer){ 4202 hci_release_packet_buffer(); 4203 } 4204 } 4205 } 4206 4207 // finalize iso stream for CIS handle 4208 iso_stream = hci_iso_stream_for_con_handle(handle); 4209 if (iso_stream != NULL){ 4210 hci_iso_stream_finalize(iso_stream); 4211 break; 4212 } 4213 4214 // finalize iso stream(s) for ACL handle 4215 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4216 while (btstack_linked_list_iterator_has_next(&it)){ 4217 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4218 if (iso_stream->acl_handle == handle ) { 4219 hci_iso_stream_finalize(iso_stream); 4220 } 4221 } 4222 #endif 4223 4224 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4225 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4226 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4227 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4228 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4229 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4230 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4231 hci_stack->num_cmd_packets = 1; 4232 } 4233 #endif 4234 4235 conn = hci_connection_for_handle(handle); 4236 if (!conn) break; 4237 #ifdef ENABLE_CLASSIC 4238 // pairing failed if it was ongoing 4239 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4240 #endif 4241 4242 // emit dedicatd bonding event 4243 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4244 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4245 } 4246 4247 // mark connection for shutdown, stop timers, reset state 4248 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4249 hci_connection_stop_timer(conn); 4250 hci_connection_init(conn); 4251 4252 #ifdef ENABLE_BLE 4253 #ifdef ENABLE_LE_PERIPHERAL 4254 // re-enable advertisements for le connections if active 4255 if (hci_is_le_connection(conn)){ 4256 hci_update_advertisements_enabled_for_current_roles(); 4257 } 4258 #endif 4259 #endif 4260 break; 4261 4262 case HCI_EVENT_HARDWARE_ERROR: 4263 log_error("Hardware Error: 0x%02x", packet[2]); 4264 if (hci_stack->hardware_error_callback){ 4265 (*hci_stack->hardware_error_callback)(packet[2]); 4266 } else { 4267 // if no special requests, just reboot stack 4268 hci_power_control_off(); 4269 hci_power_control_on(); 4270 } 4271 break; 4272 4273 #ifdef ENABLE_CLASSIC 4274 case HCI_EVENT_ROLE_CHANGE: 4275 if (packet[2]) break; // status != 0 4276 reverse_bd_addr(&packet[3], addr); 4277 addr_type = BD_ADDR_TYPE_ACL; 4278 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4279 if (!conn) break; 4280 conn->role = (hci_role_t) packet[9]; 4281 break; 4282 #endif 4283 4284 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4285 // release packet buffer only for asynchronous transport and if there are not further fragments 4286 if (hci_transport_synchronous()) { 4287 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4288 return; // instead of break: to avoid re-entering hci_run() 4289 } 4290 hci_stack->acl_fragmentation_tx_active = 0; 4291 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4292 hci_stack->iso_fragmentation_tx_active = 0; 4293 if (hci_stack->iso_fragmentation_total_size) break; 4294 #endif 4295 if (hci_stack->acl_fragmentation_total_size) break; 4296 4297 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4298 btstack_assert(hci_stack->hci_packet_buffer_reserved); 4299 hci_stack->hci_packet_buffer_reserved = false; 4300 4301 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4302 hci_iso_notify_can_send_now(); 4303 #endif 4304 // L2CAP receives this event via the hci_emit_event below 4305 4306 #ifdef ENABLE_CLASSIC 4307 // For SCO, we do the can_send_now_check here 4308 hci_notify_if_sco_can_send_now(); 4309 #endif 4310 break; 4311 4312 #ifdef ENABLE_CLASSIC 4313 case HCI_EVENT_SCO_CAN_SEND_NOW: 4314 // For SCO, we do the can_send_now_check here 4315 hci_stack->sco_can_send_now = true; 4316 hci_notify_if_sco_can_send_now(); 4317 return; 4318 4319 // explode inquriy results for easier consumption 4320 case HCI_EVENT_INQUIRY_RESULT: 4321 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4322 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4323 gap_inquiry_explode(packet, size); 4324 break; 4325 #endif 4326 4327 #ifdef ENABLE_BLE 4328 case HCI_EVENT_LE_META: 4329 switch (packet[2]){ 4330 #ifdef ENABLE_LE_CENTRAL 4331 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4332 if (!hci_stack->le_scanning_enabled) break; 4333 le_handle_advertisement_report(packet, size); 4334 break; 4335 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4336 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4337 if (!hci_stack->le_scanning_enabled) break; 4338 le_handle_extended_advertisement_report(packet, size); 4339 break; 4340 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4341 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4342 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4343 break; 4344 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4345 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4346 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4347 while (btstack_linked_list_iterator_has_next(&it)) { 4348 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4349 if (advertising_set->advertising_handle == advertising_handle){ 4350 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4351 } 4352 } 4353 break; 4354 #endif 4355 #endif 4356 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4357 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4358 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4359 hci_handle_le_connection_complete_event(packet); 4360 break; 4361 4362 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4363 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4364 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4365 conn = hci_connection_for_handle(handle); 4366 if (!conn) break; 4367 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4368 break; 4369 4370 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4371 // connection 4372 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4373 conn = hci_connection_for_handle(handle); 4374 if (conn) { 4375 // read arguments 4376 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4377 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4378 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4379 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4380 4381 // validate against current connection parameter range 4382 le_connection_parameter_range_t existing_range; 4383 gap_get_connection_parameter_range(&existing_range); 4384 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4385 if (update_parameter){ 4386 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4387 conn->le_conn_interval_min = le_conn_interval_min; 4388 conn->le_conn_interval_max = le_conn_interval_max; 4389 conn->le_conn_latency = le_conn_latency; 4390 conn->le_supervision_timeout = le_supervision_timeout; 4391 } else { 4392 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4393 } 4394 } 4395 break; 4396 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4397 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4398 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4399 conn = hci_connection_for_handle(handle); 4400 if (conn) { 4401 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4402 } 4403 break; 4404 #endif 4405 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4406 case HCI_SUBEVENT_LE_CIS_REQUEST: 4407 // incoming CIS request, allocate iso stream object and cache metadata 4408 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4409 hci_subevent_le_cis_request_get_cig_id(packet), 4410 hci_subevent_le_cis_request_get_cis_id(packet)); 4411 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4412 if (iso_stream != NULL){ 4413 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4414 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4415 } 4416 break; 4417 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4418 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4419 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4420 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4421 iso_stream = hci_iso_stream_for_con_handle(handle); 4422 btstack_assert(iso_stream != NULL); 4423 // track connection info 4424 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4425 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4426 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4427 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4428 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4429 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4430 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4431 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4432 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4433 // CIS Accept by Peripheral 4434 if (status == ERROR_CODE_SUCCESS){ 4435 if (iso_stream->max_sdu_p_to_c > 0){ 4436 // we're peripheral and we will send data 4437 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4438 } else { 4439 // we're peripheral and we will only receive data 4440 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4441 } 4442 } else { 4443 hci_cis_handle_created(iso_stream, status); 4444 } 4445 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4446 } else { 4447 // CIG Setup by Central 4448 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4449 btstack_assert(cig != NULL); 4450 // update iso stream state 4451 if (status == ERROR_CODE_SUCCESS){ 4452 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4453 } else { 4454 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4455 } 4456 // update cig state 4457 uint8_t i; 4458 for (i=0;i<cig->num_cis;i++){ 4459 if (cig->cis_con_handles[i] == handle){ 4460 cig->cis_setup_active[i] = false; 4461 if (status == ERROR_CODE_SUCCESS){ 4462 cig->cis_established[i] = true; 4463 } else { 4464 hci_cis_handle_created(iso_stream, status); 4465 } 4466 } 4467 } 4468 4469 // trigger iso path setup if complete 4470 bool cis_setup_active = false; 4471 for (i=0;i<cig->num_cis;i++){ 4472 cis_setup_active |= cig->cis_setup_active[i]; 4473 } 4474 if (cis_setup_active == false){ 4475 cig->state_vars.next_cis = 0; 4476 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4477 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4478 } 4479 } 4480 } 4481 break; 4482 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4483 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4484 big = hci_big_for_handle(packet[4]); 4485 if (big != NULL){ 4486 uint8_t status = packet[3]; 4487 if (status == ERROR_CODE_SUCCESS){ 4488 // store bis_con_handles and trigger iso path setup 4489 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4490 uint8_t i; 4491 for (i=0;i<num_bis;i++){ 4492 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4493 big->bis_con_handles[i] = bis_handle; 4494 // assign bis handle 4495 btstack_linked_list_iterator_t it; 4496 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4497 while (btstack_linked_list_iterator_has_next(&it)){ 4498 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4499 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4500 (iso_stream->group_id == big->big_handle)){ 4501 iso_stream->cis_handle = bis_handle; 4502 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4503 break; 4504 } 4505 } 4506 } 4507 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4508 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4509 big->state_vars.next_bis = 0; 4510 } 4511 } else { 4512 // create BIG failed or has been stopped by us 4513 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4514 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4515 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4516 hci_emit_big_created(big, status); 4517 } else { 4518 hci_emit_big_terminated(big); 4519 } 4520 } 4521 } 4522 break; 4523 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4524 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4525 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4526 if (big != NULL){ 4527 // finalize associated ISO streams 4528 btstack_linked_list_iterator_t it; 4529 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4530 while (btstack_linked_list_iterator_has_next(&it)){ 4531 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4532 if (iso_stream->group_id == big->big_handle){ 4533 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4534 btstack_linked_list_iterator_remove(&it); 4535 btstack_memory_hci_iso_stream_free(iso_stream); 4536 } 4537 } 4538 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4539 switch (big->state){ 4540 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4541 hci_emit_big_created(big, big->state_vars.status); 4542 break; 4543 default: 4544 hci_emit_big_terminated(big); 4545 break; 4546 } 4547 } 4548 break; 4549 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4550 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4551 big_sync = hci_big_sync_for_handle(packet[4]); 4552 if (big_sync != NULL){ 4553 uint8_t status = packet[3]; 4554 uint8_t big_handle = packet[4]; 4555 if (status == ERROR_CODE_SUCCESS){ 4556 // store bis_con_handles and trigger iso path setup 4557 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4558 uint8_t i; 4559 for (i=0;i<num_bis;i++){ 4560 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4561 big_sync->bis_con_handles[i] = bis_handle; 4562 // setup iso_stream_t 4563 btstack_linked_list_iterator_t it; 4564 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4565 while (btstack_linked_list_iterator_has_next(&it)){ 4566 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4567 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4568 (iso_stream->group_id == big_sync->big_handle)){ 4569 iso_stream->cis_handle = bis_handle; 4570 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4571 break; 4572 } 4573 } 4574 } 4575 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4576 // trigger iso path setup 4577 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4578 big_sync->state_vars.next_bis = 0; 4579 } 4580 } else { 4581 // create BIG Sync failed or has been stopped by us 4582 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4583 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4584 hci_emit_big_sync_created(big_sync, status); 4585 } else { 4586 hci_emit_big_sync_stopped(big_handle); 4587 } 4588 } 4589 } 4590 break; 4591 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4592 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4593 big_sync = hci_big_sync_for_handle(packet[4]); 4594 if (big_sync != NULL){ 4595 uint8_t big_handle = packet[4]; 4596 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4597 hci_emit_big_sync_stopped(big_handle); 4598 } 4599 break; 4600 #endif 4601 default: 4602 break; 4603 } 4604 break; 4605 #endif 4606 case HCI_EVENT_VENDOR_SPECIFIC: 4607 // Vendor specific commands often create vendor specific event instead of num completed packets 4608 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4609 switch (hci_stack->manufacturer){ 4610 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4611 hci_stack->num_cmd_packets = 1; 4612 break; 4613 default: 4614 break; 4615 } 4616 break; 4617 default: 4618 break; 4619 } 4620 4621 handle_event_for_current_stack_state(packet, size); 4622 4623 // notify upper stack 4624 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4625 4626 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4627 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4628 handle = little_endian_read_16(packet, 3); 4629 hci_connection_t * aConn = hci_connection_for_handle(handle); 4630 // discard connection if app did not trigger a reconnect in the event handler 4631 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4632 hci_shutdown_connection(aConn); 4633 } 4634 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4635 hci_controller_dump_packets(); 4636 #endif 4637 } 4638 4639 // execute main loop 4640 hci_run(); 4641 } 4642 4643 #ifdef ENABLE_CLASSIC 4644 4645 static void sco_handler(uint8_t * packet, uint16_t size){ 4646 // lookup connection struct 4647 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4648 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4649 if (!conn) return; 4650 4651 #ifdef ENABLE_SCO_OVER_HCI 4652 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4653 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4654 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4655 packet[2] = 0x3c; 4656 memmove(&packet[3], &packet[23], 63); 4657 size = 63; 4658 } 4659 } 4660 4661 if (hci_have_usb_transport()){ 4662 // Nothing to do 4663 } else { 4664 // 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); 4665 if (hci_stack->synchronous_flow_control_enabled == 0){ 4666 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4667 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4668 if (conn->sco_tx_active == 0){ 4669 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4670 conn->sco_tx_active = 1; 4671 conn->sco_tx_ready = max_sco_packets; 4672 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4673 hci_notify_if_sco_can_send_now(); 4674 } 4675 } else { 4676 if (conn->sco_tx_ready < max_sco_packets){ 4677 conn->sco_tx_ready++; 4678 } 4679 hci_notify_if_sco_can_send_now(); 4680 } 4681 } 4682 } 4683 #endif 4684 4685 // deliver to app 4686 if (hci_stack->sco_packet_handler) { 4687 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4688 } 4689 4690 #ifdef HAVE_SCO_TRANSPORT 4691 // We can send one packet for each received packet 4692 conn->sco_tx_ready++; 4693 hci_notify_if_sco_can_send_now(); 4694 #endif 4695 4696 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4697 conn->num_packets_completed++; 4698 hci_stack->host_completed_packets = 1; 4699 hci_run(); 4700 #endif 4701 } 4702 #endif 4703 4704 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4705 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4706 // propagate ISO packets received as ACL 4707 hci_iso_stream_t * iso_stream = NULL; 4708 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4709 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4710 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4711 if (iso_stream != NULL){ 4712 packet_type = HCI_ISO_DATA_PACKET; 4713 } 4714 } 4715 #endif 4716 4717 hci_dump_packet(packet_type, 1, packet, size); 4718 switch (packet_type) { 4719 case HCI_EVENT_PACKET: 4720 event_handler(packet, size); 4721 break; 4722 case HCI_ACL_DATA_PACKET: 4723 acl_handler(packet, size); 4724 break; 4725 #ifdef ENABLE_CLASSIC 4726 case HCI_SCO_DATA_PACKET: 4727 sco_handler(packet, size); 4728 break; 4729 #endif 4730 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4731 case HCI_ISO_DATA_PACKET: 4732 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4733 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4734 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4735 } 4736 hci_iso_packet_handler(iso_stream, packet, size); 4737 break; 4738 #endif 4739 default: 4740 break; 4741 } 4742 } 4743 4744 /** 4745 * @brief Add event packet handler. 4746 */ 4747 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4748 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4749 } 4750 4751 /** 4752 * @brief Remove event packet handler. 4753 */ 4754 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4755 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4756 } 4757 4758 /** Register HCI packet handlers */ 4759 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4760 hci_stack->acl_packet_handler = handler; 4761 } 4762 4763 #ifdef ENABLE_CLASSIC 4764 /** 4765 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4766 */ 4767 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4768 hci_stack->sco_packet_handler = handler; 4769 } 4770 #endif 4771 4772 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4773 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4774 hci_stack->iso_packet_handler = handler; 4775 } 4776 #endif 4777 4778 static void hci_state_reset(void){ 4779 // no connections yet 4780 hci_stack->connections = NULL; 4781 4782 // keep discoverable/connectable as this has been requested by the client(s) 4783 // hci_stack->discoverable = 0; 4784 // hci_stack->connectable = 0; 4785 // hci_stack->bondable = 1; 4786 // hci_stack->own_addr_type = 0; 4787 4788 // buffer is free 4789 hci_stack->hci_packet_buffer_reserved = false; 4790 4791 // no pending cmds 4792 hci_stack->decline_reason = 0; 4793 4794 hci_stack->secure_connections_active = false; 4795 4796 #ifdef ENABLE_CLASSIC 4797 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4798 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4799 4800 hci_stack->gap_tasks_classic = 4801 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4802 GAP_TASK_SET_CLASS_OF_DEVICE | 4803 GAP_TASK_SET_LOCAL_NAME | 4804 GAP_TASK_SET_EIR_DATA | 4805 GAP_TASK_WRITE_SCAN_ENABLE | 4806 GAP_TASK_WRITE_PAGE_TIMEOUT; 4807 #endif 4808 4809 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4810 hci_stack->classic_read_local_oob_data = false; 4811 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4812 #endif 4813 4814 // LE 4815 #ifdef ENABLE_BLE 4816 memset(hci_stack->le_random_address, 0, 6); 4817 hci_stack->le_random_address_set = 0; 4818 #endif 4819 #ifdef ENABLE_LE_CENTRAL 4820 hci_stack->le_scanning_active = false; 4821 hci_stack->le_scanning_param_update = true; 4822 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4823 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4824 hci_stack->le_whitelist_capacity = 0; 4825 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4826 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4827 #endif 4828 #endif 4829 #ifdef ENABLE_LE_PERIPHERAL 4830 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4831 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4832 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4833 } 4834 if (hci_stack->le_advertisements_data != NULL){ 4835 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4836 } 4837 #endif 4838 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4839 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4840 #endif 4841 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4842 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4843 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4844 #endif 4845 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4846 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4847 #endif 4848 } 4849 4850 #ifdef ENABLE_CLASSIC 4851 /** 4852 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4853 */ 4854 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4855 // store and open remote device db 4856 hci_stack->link_key_db = link_key_db; 4857 if (hci_stack->link_key_db) { 4858 hci_stack->link_key_db->open(); 4859 } 4860 } 4861 #endif 4862 4863 void hci_init(const hci_transport_t *transport, const void *config){ 4864 4865 #ifdef HAVE_MALLOC 4866 if (!hci_stack) { 4867 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4868 } 4869 #else 4870 hci_stack = &hci_stack_static; 4871 #endif 4872 memset(hci_stack, 0, sizeof(hci_stack_t)); 4873 4874 // reference to use transport layer implementation 4875 hci_stack->hci_transport = transport; 4876 4877 // reference to used config 4878 hci_stack->config = config; 4879 4880 // setup pointer for outgoing packet buffer 4881 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4882 4883 // max acl payload size defined in config.h 4884 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4885 4886 // register packet handlers with transport 4887 transport->register_packet_handler(&packet_handler); 4888 4889 hci_stack->state = HCI_STATE_OFF; 4890 4891 // class of device 4892 hci_stack->class_of_device = 0x007a020c; // Smartphone 4893 4894 // bondable by default 4895 hci_stack->bondable = 1; 4896 4897 #ifdef ENABLE_CLASSIC 4898 // classic name 4899 hci_stack->local_name = default_classic_name; 4900 4901 // Master slave policy 4902 hci_stack->master_slave_policy = 1; 4903 4904 // Allow Role Switch 4905 hci_stack->allow_role_switch = 1; 4906 4907 // Default / minimum security level = 2 4908 hci_stack->gap_security_level = LEVEL_2; 4909 4910 // Default Security Mode 4 4911 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4912 4913 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4914 hci_stack->gap_required_encyrption_key_size = 7; 4915 4916 // Link Supervision Timeout 4917 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4918 4919 // All ACL packet types are enabledh 4920 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4921 #endif 4922 4923 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4924 hci_stack->ssp_enable = 1; 4925 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4926 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4927 hci_stack->ssp_auto_accept = 1; 4928 4929 // Secure Connections: enable (requires support from Controller) 4930 hci_stack->secure_connections_enable = true; 4931 4932 // voice setting - signed 16 bit pcm data with CVSD over the air 4933 hci_stack->sco_voice_setting = 0x60; 4934 4935 #ifdef ENABLE_BLE 4936 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4937 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4938 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4939 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4940 hci_stack->le_connection_latency = 4; // 4 4941 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4942 hci_stack->le_minimum_ce_length = 0; // 0 ms 4943 hci_stack->le_maximum_ce_length = 0; // 0 ms 4944 #endif 4945 4946 #ifdef ENABLE_LE_CENTRAL 4947 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4948 4949 // default LE Scanning 4950 hci_stack->le_scan_type = 0x01; // active 4951 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4952 hci_stack->le_scan_window = 0x30; // 30 ms 4953 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4954 #endif 4955 4956 #ifdef ENABLE_LE_PERIPHERAL 4957 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4958 4959 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4960 hci_stack->le_advertisements_interval_min = 0x0800; 4961 hci_stack->le_advertisements_interval_max = 0x0800; 4962 hci_stack->le_advertisements_type = 0; 4963 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4964 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4965 hci_stack->le_advertisements_channel_map = 0x07; 4966 hci_stack->le_advertisements_filter_policy = 0; 4967 #endif 4968 4969 // connection parameter range used to answer connection parameter update requests in l2cap 4970 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4971 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4972 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4973 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4974 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4975 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4976 4977 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4978 hci_stack->iso_packets_to_queue = 1; 4979 #endif 4980 4981 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4982 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4983 #endif 4984 4985 hci_state_reset(); 4986 } 4987 4988 void hci_deinit(void){ 4989 btstack_run_loop_remove_timer(&hci_stack->timeout); 4990 #ifdef HAVE_MALLOC 4991 if (hci_stack) { 4992 free(hci_stack); 4993 } 4994 #endif 4995 hci_stack = NULL; 4996 4997 #ifdef ENABLE_CLASSIC 4998 disable_l2cap_timeouts = 0; 4999 #endif 5000 } 5001 5002 /** 5003 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5004 */ 5005 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5006 hci_stack->chipset = chipset_driver; 5007 5008 // reset chipset driver - init is also called on power_up 5009 if (hci_stack->chipset && hci_stack->chipset->init){ 5010 hci_stack->chipset->init(hci_stack->config); 5011 } 5012 } 5013 5014 void hci_enable_custom_pre_init(void){ 5015 hci_stack->chipset_pre_init = true; 5016 } 5017 5018 /** 5019 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5020 */ 5021 void hci_set_control(const btstack_control_t *hardware_control){ 5022 // references to used control implementation 5023 hci_stack->control = hardware_control; 5024 // init with transport config 5025 hardware_control->init(hci_stack->config); 5026 } 5027 5028 static void hci_discard_connections(void){ 5029 btstack_linked_list_iterator_t it; 5030 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5031 while (btstack_linked_list_iterator_has_next(&it)){ 5032 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5033 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5034 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5035 hci_shutdown_connection(connection); 5036 } 5037 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5038 while (hci_stack->iso_streams != NULL){ 5039 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5040 } 5041 #endif 5042 } 5043 5044 void hci_close(void){ 5045 5046 #ifdef ENABLE_CLASSIC 5047 // close remote device db 5048 if (hci_stack->link_key_db) { 5049 hci_stack->link_key_db->close(); 5050 } 5051 #endif 5052 5053 hci_discard_connections(); 5054 5055 hci_power_control(HCI_POWER_OFF); 5056 5057 #ifdef HAVE_MALLOC 5058 free(hci_stack); 5059 #endif 5060 hci_stack = NULL; 5061 } 5062 5063 #ifdef HAVE_SCO_TRANSPORT 5064 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5065 hci_stack->sco_transport = sco_transport; 5066 sco_transport->register_packet_handler(&packet_handler); 5067 } 5068 #endif 5069 5070 #ifdef ENABLE_CLASSIC 5071 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5072 // validate ranage and set 5073 if (encryption_key_size < 7) return; 5074 if (encryption_key_size > 16) return; 5075 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5076 } 5077 5078 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5079 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5080 hci_stack->gap_security_mode = security_mode; 5081 return ERROR_CODE_SUCCESS; 5082 } else { 5083 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5084 } 5085 } 5086 5087 gap_security_mode_t gap_get_security_mode(void){ 5088 return hci_stack->gap_security_mode; 5089 } 5090 5091 void gap_set_security_level(gap_security_level_t security_level){ 5092 hci_stack->gap_security_level = security_level; 5093 } 5094 5095 gap_security_level_t gap_get_security_level(void){ 5096 if (hci_stack->gap_secure_connections_only_mode){ 5097 return LEVEL_4; 5098 } 5099 return hci_stack->gap_security_level; 5100 } 5101 5102 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5103 hci_stack->gap_minimal_service_security_level = security_level; 5104 } 5105 5106 void gap_set_secure_connections_only_mode(bool enable){ 5107 hci_stack->gap_secure_connections_only_mode = enable; 5108 } 5109 5110 bool gap_get_secure_connections_only_mode(void){ 5111 return hci_stack->gap_secure_connections_only_mode; 5112 } 5113 #endif 5114 5115 #ifdef ENABLE_CLASSIC 5116 void gap_set_class_of_device(uint32_t class_of_device){ 5117 hci_stack->class_of_device = class_of_device; 5118 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5119 hci_run(); 5120 } 5121 5122 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5123 hci_stack->default_link_policy_settings = default_link_policy_settings; 5124 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5125 hci_run(); 5126 } 5127 5128 void gap_set_allow_role_switch(bool allow_role_switch){ 5129 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5130 } 5131 5132 uint8_t hci_get_allow_role_switch(void){ 5133 return hci_stack->allow_role_switch; 5134 } 5135 5136 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5137 hci_stack->link_supervision_timeout = link_supervision_timeout; 5138 } 5139 5140 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5141 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5142 } 5143 5144 uint16_t hci_automatic_flush_timeout(void){ 5145 return hci_stack->automatic_flush_timeout; 5146 } 5147 5148 void hci_disable_l2cap_timeout_check(void){ 5149 disable_l2cap_timeouts = 1; 5150 } 5151 #endif 5152 5153 #ifndef HAVE_HOST_CONTROLLER_API 5154 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5155 void hci_set_bd_addr(bd_addr_t addr){ 5156 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5157 hci_stack->custom_bd_addr_set = 1; 5158 } 5159 #endif 5160 5161 // State-Module-Driver overview 5162 // state module low-level 5163 // HCI_STATE_OFF off close 5164 // HCI_STATE_INITIALIZING, on open 5165 // HCI_STATE_WORKING, on open 5166 // HCI_STATE_HALTING, on open 5167 // HCI_STATE_SLEEPING, off/sleep close 5168 // HCI_STATE_FALLING_ASLEEP on open 5169 5170 static int hci_power_control_on(void){ 5171 5172 // power on 5173 int err = 0; 5174 if (hci_stack->control && hci_stack->control->on){ 5175 err = (*hci_stack->control->on)(); 5176 } 5177 if (err){ 5178 log_error( "POWER_ON failed"); 5179 hci_emit_hci_open_failed(); 5180 return err; 5181 } 5182 5183 // int chipset driver 5184 if (hci_stack->chipset && hci_stack->chipset->init){ 5185 hci_stack->chipset->init(hci_stack->config); 5186 } 5187 5188 // init transport 5189 if (hci_stack->hci_transport->init){ 5190 hci_stack->hci_transport->init(hci_stack->config); 5191 } 5192 5193 // open transport 5194 err = hci_stack->hci_transport->open(); 5195 if (err){ 5196 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5197 if (hci_stack->control && hci_stack->control->off){ 5198 (*hci_stack->control->off)(); 5199 } 5200 hci_emit_hci_open_failed(); 5201 return err; 5202 } 5203 return 0; 5204 } 5205 5206 static void hci_power_control_off(void){ 5207 5208 log_info("hci_power_control_off"); 5209 5210 // close low-level device 5211 hci_stack->hci_transport->close(); 5212 5213 log_info("hci_power_control_off - hci_transport closed"); 5214 5215 // power off 5216 if (hci_stack->control && hci_stack->control->off){ 5217 (*hci_stack->control->off)(); 5218 } 5219 5220 log_info("hci_power_control_off - control closed"); 5221 5222 hci_stack->state = HCI_STATE_OFF; 5223 } 5224 5225 static void hci_power_control_sleep(void){ 5226 5227 log_info("hci_power_control_sleep"); 5228 5229 #if 0 5230 // don't close serial port during sleep 5231 5232 // close low-level device 5233 hci_stack->hci_transport->close(hci_stack->config); 5234 #endif 5235 5236 // sleep mode 5237 if (hci_stack->control && hci_stack->control->sleep){ 5238 (*hci_stack->control->sleep)(); 5239 } 5240 5241 hci_stack->state = HCI_STATE_SLEEPING; 5242 } 5243 5244 static int hci_power_control_wake(void){ 5245 5246 log_info("hci_power_control_wake"); 5247 5248 // wake on 5249 if (hci_stack->control && hci_stack->control->wake){ 5250 (*hci_stack->control->wake)(); 5251 } 5252 5253 #if 0 5254 // open low-level device 5255 int err = hci_stack->hci_transport->open(hci_stack->config); 5256 if (err){ 5257 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5258 if (hci_stack->control && hci_stack->control->off){ 5259 (*hci_stack->control->off)(); 5260 } 5261 hci_emit_hci_open_failed(); 5262 return err; 5263 } 5264 #endif 5265 5266 return 0; 5267 } 5268 5269 static void hci_power_enter_initializing_state(void){ 5270 // set up state machine 5271 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5272 hci_stack->hci_packet_buffer_reserved = false; 5273 hci_stack->state = HCI_STATE_INITIALIZING; 5274 5275 #ifndef HAVE_HOST_CONTROLLER_API 5276 if (hci_stack->chipset_pre_init) { 5277 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5278 } else 5279 #endif 5280 { 5281 hci_stack->substate = HCI_INIT_SEND_RESET; 5282 } 5283 } 5284 5285 static void hci_power_enter_halting_state(void){ 5286 #ifdef ENABLE_BLE 5287 // drop entries scheduled for removal, mark others for re-adding 5288 btstack_linked_list_iterator_t it; 5289 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5290 while (btstack_linked_list_iterator_has_next(&it)){ 5291 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5292 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5293 btstack_linked_list_iterator_remove(&it); 5294 btstack_memory_whitelist_entry_free(entry); 5295 } else { 5296 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5297 } 5298 } 5299 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5300 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5301 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5302 while (btstack_linked_list_iterator_has_next(&it)){ 5303 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5304 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5305 btstack_linked_list_iterator_remove(&it); 5306 btstack_memory_periodic_advertiser_list_entry_free(entry); 5307 } else { 5308 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5309 continue; 5310 } 5311 } 5312 #endif 5313 #endif 5314 // see hci_run 5315 hci_stack->state = HCI_STATE_HALTING; 5316 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5317 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5318 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5319 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5320 btstack_run_loop_add_timer(&hci_stack->timeout); 5321 } 5322 5323 // returns error 5324 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5325 int err; 5326 switch (power_mode){ 5327 case HCI_POWER_ON: 5328 err = hci_power_control_on(); 5329 if (err != 0) { 5330 log_error("hci_power_control_on() error %d", err); 5331 return err; 5332 } 5333 hci_power_enter_initializing_state(); 5334 break; 5335 case HCI_POWER_OFF: 5336 // do nothing 5337 break; 5338 case HCI_POWER_SLEEP: 5339 // do nothing (with SLEEP == OFF) 5340 break; 5341 default: 5342 btstack_assert(false); 5343 break; 5344 } 5345 return ERROR_CODE_SUCCESS; 5346 } 5347 5348 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5349 switch (power_mode){ 5350 case HCI_POWER_ON: 5351 // do nothing 5352 break; 5353 case HCI_POWER_OFF: 5354 // no connections yet, just turn it off 5355 hci_power_control_off(); 5356 break; 5357 case HCI_POWER_SLEEP: 5358 // no connections yet, just turn it off 5359 hci_power_control_sleep(); 5360 break; 5361 default: 5362 btstack_assert(false); 5363 break; 5364 } 5365 return ERROR_CODE_SUCCESS; 5366 } 5367 5368 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5369 switch (power_mode){ 5370 case HCI_POWER_ON: 5371 // do nothing 5372 break; 5373 case HCI_POWER_OFF: 5374 hci_power_enter_halting_state(); 5375 break; 5376 case HCI_POWER_SLEEP: 5377 // see hci_run 5378 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5379 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5380 break; 5381 default: 5382 btstack_assert(false); 5383 break; 5384 } 5385 return ERROR_CODE_SUCCESS; 5386 } 5387 5388 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5389 switch (power_mode){ 5390 case HCI_POWER_ON: 5391 hci_power_enter_initializing_state(); 5392 break; 5393 case HCI_POWER_OFF: 5394 // do nothing 5395 break; 5396 case HCI_POWER_SLEEP: 5397 // see hci_run 5398 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5399 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5400 break; 5401 default: 5402 btstack_assert(false); 5403 break; 5404 } 5405 return ERROR_CODE_SUCCESS; 5406 } 5407 5408 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5409 switch (power_mode){ 5410 case HCI_POWER_ON: 5411 hci_power_enter_initializing_state(); 5412 break; 5413 case HCI_POWER_OFF: 5414 hci_power_enter_halting_state(); 5415 break; 5416 case HCI_POWER_SLEEP: 5417 // do nothing 5418 break; 5419 default: 5420 btstack_assert(false); 5421 break; 5422 } 5423 return ERROR_CODE_SUCCESS; 5424 } 5425 5426 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5427 int err; 5428 switch (power_mode){ 5429 case HCI_POWER_ON: 5430 err = hci_power_control_wake(); 5431 if (err) return err; 5432 hci_power_enter_initializing_state(); 5433 break; 5434 case HCI_POWER_OFF: 5435 hci_power_enter_halting_state(); 5436 break; 5437 case HCI_POWER_SLEEP: 5438 // do nothing 5439 break; 5440 default: 5441 btstack_assert(false); 5442 break; 5443 } 5444 return ERROR_CODE_SUCCESS; 5445 } 5446 5447 int hci_power_control(HCI_POWER_MODE power_mode){ 5448 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5449 btstack_run_loop_remove_timer(&hci_stack->timeout); 5450 int err = 0; 5451 switch (hci_stack->state){ 5452 case HCI_STATE_OFF: 5453 err = hci_power_control_state_off(power_mode); 5454 break; 5455 case HCI_STATE_INITIALIZING: 5456 err = hci_power_control_state_initializing(power_mode); 5457 break; 5458 case HCI_STATE_WORKING: 5459 err = hci_power_control_state_working(power_mode); 5460 break; 5461 case HCI_STATE_HALTING: 5462 err = hci_power_control_state_halting(power_mode); 5463 break; 5464 case HCI_STATE_FALLING_ASLEEP: 5465 err = hci_power_control_state_falling_asleep(power_mode); 5466 break; 5467 case HCI_STATE_SLEEPING: 5468 err = hci_power_control_state_sleeping(power_mode); 5469 break; 5470 default: 5471 btstack_assert(false); 5472 break; 5473 } 5474 if (err != 0){ 5475 return err; 5476 } 5477 5478 // create internal event 5479 hci_emit_state(); 5480 5481 // trigger next/first action 5482 hci_run(); 5483 5484 return 0; 5485 } 5486 5487 5488 static void hci_halting_run(void) { 5489 5490 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5491 5492 hci_connection_t *connection; 5493 #ifdef ENABLE_BLE 5494 #ifdef ENABLE_LE_PERIPHERAL 5495 bool stop_advertismenets; 5496 #endif 5497 #endif 5498 5499 switch (hci_stack->substate) { 5500 case HCI_HALTING_CLASSIC_STOP: 5501 #ifdef ENABLE_CLASSIC 5502 if (!hci_can_send_command_packet_now()) return; 5503 5504 if (hci_stack->connectable || hci_stack->discoverable){ 5505 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5506 hci_send_cmd(&hci_write_scan_enable, 0); 5507 return; 5508 } 5509 #endif 5510 /* fall through */ 5511 5512 case HCI_HALTING_LE_ADV_STOP: 5513 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5514 5515 #ifdef ENABLE_BLE 5516 #ifdef ENABLE_LE_PERIPHERAL 5517 if (!hci_can_send_command_packet_now()) return; 5518 5519 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5520 5521 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5522 if (hci_le_extended_advertising_supported()){ 5523 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5524 btstack_linked_list_iterator_t it; 5525 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5526 // stop all periodic advertisements and check if an extended set is active 5527 while (btstack_linked_list_iterator_has_next(&it)){ 5528 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5529 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5530 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5531 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5532 return; 5533 } 5534 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5535 stop_advertismenets = true; 5536 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5537 } 5538 } 5539 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5540 if (stop_advertismenets){ 5541 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5542 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5543 return; 5544 } 5545 } else 5546 #else /* ENABLE_LE_PERIPHERAL */ 5547 { 5548 if (stop_advertismenets) { 5549 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5550 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5551 return; 5552 } 5553 } 5554 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5555 #endif /* ENABLE_LE_PERIPHERAL */ 5556 #endif /* ENABLE_BLE */ 5557 5558 /* fall through */ 5559 5560 case HCI_HALTING_LE_SCAN_STOP: 5561 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5562 if (!hci_can_send_command_packet_now()) return; 5563 5564 #ifdef ENABLE_BLE 5565 #ifdef ENABLE_LE_CENTRAL 5566 if (hci_stack->le_scanning_active){ 5567 hci_le_scan_stop(); 5568 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5569 return; 5570 } 5571 #endif 5572 #endif 5573 5574 /* fall through */ 5575 5576 case HCI_HALTING_DISCONNECT_ALL: 5577 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5578 if (!hci_can_send_command_packet_now()) return; 5579 5580 // close all open connections 5581 connection = (hci_connection_t *) hci_stack->connections; 5582 if (connection) { 5583 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5584 5585 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5586 5587 // check state 5588 switch(connection->state) { 5589 case SENT_DISCONNECT: 5590 case RECEIVED_DISCONNECTION_COMPLETE: 5591 // wait until connection is gone 5592 return; 5593 default: 5594 break; 5595 } 5596 5597 // finally, send the disconnect command 5598 connection->state = SENT_DISCONNECT; 5599 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5600 return; 5601 } 5602 5603 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5604 // stop BIGs and BIG Syncs 5605 if (hci_stack->le_audio_bigs != NULL){ 5606 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5607 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5608 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5609 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5610 return; 5611 } 5612 if (hci_stack->le_audio_big_syncs != NULL){ 5613 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5614 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5615 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5616 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5617 return; 5618 } 5619 #endif 5620 5621 btstack_run_loop_remove_timer(&hci_stack->timeout); 5622 5623 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5624 log_info("HCI_STATE_HALTING: wait 50 ms"); 5625 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5626 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5627 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5628 btstack_run_loop_add_timer(&hci_stack->timeout); 5629 break; 5630 5631 case HCI_HALTING_W4_CLOSE_TIMER: 5632 // keep waiting 5633 break; 5634 5635 case HCI_HALTING_CLOSE: 5636 // close left over connections (that had not been properly closed before) 5637 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5638 hci_discard_connections(); 5639 5640 log_info("HCI_STATE_HALTING, calling off"); 5641 5642 // switch mode 5643 hci_power_control_off(); 5644 5645 log_info("HCI_STATE_HALTING, emitting state"); 5646 hci_emit_state(); 5647 log_info("HCI_STATE_HALTING, done"); 5648 break; 5649 5650 default: 5651 break; 5652 } 5653 }; 5654 5655 static void hci_falling_asleep_run(void){ 5656 hci_connection_t * connection; 5657 switch(hci_stack->substate) { 5658 case HCI_FALLING_ASLEEP_DISCONNECT: 5659 log_info("HCI_STATE_FALLING_ASLEEP"); 5660 // close all open connections 5661 connection = (hci_connection_t *) hci_stack->connections; 5662 if (connection){ 5663 5664 // send disconnect 5665 if (!hci_can_send_command_packet_now()) return; 5666 5667 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5668 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5669 5670 // send disconnected event right away - causes higher layer connections to get closed, too. 5671 hci_shutdown_connection(connection); 5672 return; 5673 } 5674 5675 if (hci_classic_supported()){ 5676 // disable page and inquiry scan 5677 if (!hci_can_send_command_packet_now()) return; 5678 5679 log_info("HCI_STATE_HALTING, disabling inq scans"); 5680 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5681 5682 // continue in next sub state 5683 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5684 break; 5685 } 5686 5687 /* fall through */ 5688 5689 case HCI_FALLING_ASLEEP_COMPLETE: 5690 log_info("HCI_STATE_HALTING, calling sleep"); 5691 // switch mode 5692 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5693 hci_emit_state(); 5694 break; 5695 5696 default: 5697 break; 5698 } 5699 } 5700 5701 #ifdef ENABLE_CLASSIC 5702 5703 static void hci_update_scan_enable(void){ 5704 // 2 = page scan, 1 = inq scan 5705 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5706 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5707 hci_run(); 5708 } 5709 5710 void gap_discoverable_control(uint8_t enable){ 5711 if (enable) enable = 1; // normalize argument 5712 5713 if (hci_stack->discoverable == enable){ 5714 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5715 return; 5716 } 5717 5718 hci_stack->discoverable = enable; 5719 hci_update_scan_enable(); 5720 } 5721 5722 void gap_connectable_control(uint8_t enable){ 5723 if (enable) enable = 1; // normalize argument 5724 5725 // don't emit event 5726 if (hci_stack->connectable == enable) return; 5727 5728 hci_stack->connectable = enable; 5729 hci_update_scan_enable(); 5730 } 5731 #endif 5732 5733 void gap_local_bd_addr(bd_addr_t address_buffer){ 5734 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5735 } 5736 5737 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5738 static void hci_host_num_completed_packets(void){ 5739 5740 // create packet manually as arrays are not supported and num_commands should not get reduced 5741 hci_reserve_packet_buffer(); 5742 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5743 5744 uint16_t size = 0; 5745 uint16_t num_handles = 0; 5746 packet[size++] = 0x35; 5747 packet[size++] = 0x0c; 5748 size++; // skip param len 5749 size++; // skip num handles 5750 5751 // add { handle, packets } entries 5752 btstack_linked_item_t * it; 5753 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5754 hci_connection_t * connection = (hci_connection_t *) it; 5755 if (connection->num_packets_completed){ 5756 little_endian_store_16(packet, size, connection->con_handle); 5757 size += 2; 5758 little_endian_store_16(packet, size, connection->num_packets_completed); 5759 size += 2; 5760 // 5761 num_handles++; 5762 connection->num_packets_completed = 0; 5763 } 5764 } 5765 5766 packet[2] = size - 3; 5767 packet[3] = num_handles; 5768 5769 hci_stack->host_completed_packets = 0; 5770 5771 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5772 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5773 5774 // release packet buffer for synchronous transport implementations 5775 if (hci_transport_synchronous()){ 5776 hci_release_packet_buffer(); 5777 hci_emit_transport_packet_sent(); 5778 } 5779 } 5780 #endif 5781 5782 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5783 UNUSED(ds); 5784 hci_stack->substate = HCI_HALTING_CLOSE; 5785 hci_halting_run(); 5786 } 5787 5788 static bool hci_run_acl_fragments(void){ 5789 if (hci_stack->acl_fragmentation_total_size > 0u) { 5790 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5791 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5792 if (connection) { 5793 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5794 hci_send_acl_packet_fragments(connection); 5795 return true; 5796 } 5797 } else { 5798 // connection gone -> discard further fragments 5799 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5800 hci_stack->acl_fragmentation_total_size = 0; 5801 hci_stack->acl_fragmentation_pos = 0; 5802 } 5803 } 5804 return false; 5805 } 5806 5807 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5808 static bool hci_run_iso_fragments(void){ 5809 if (hci_stack->iso_fragmentation_total_size > 0u) { 5810 // TODO: flow control 5811 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5812 hci_send_iso_packet_fragments(); 5813 return true; 5814 } 5815 } 5816 return false; 5817 } 5818 #endif 5819 5820 #ifdef ENABLE_CLASSIC 5821 5822 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5823 static bool hci_classic_operation_active(void) { 5824 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5825 return true; 5826 } 5827 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5828 return true; 5829 } 5830 btstack_linked_item_t * it; 5831 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5832 hci_connection_t *connection = (hci_connection_t *) it; 5833 switch (connection->state) { 5834 case SENT_CREATE_CONNECTION: 5835 case SENT_CANCEL_CONNECTION: 5836 case SENT_DISCONNECT: 5837 return true; 5838 default: 5839 break; 5840 } 5841 } 5842 return false; 5843 } 5844 #endif 5845 5846 static bool hci_run_general_gap_classic(void){ 5847 5848 // assert stack is working and classic is active 5849 if (hci_classic_supported() == false) return false; 5850 if (hci_stack->state != HCI_STATE_WORKING) return false; 5851 5852 // decline incoming connections 5853 if (hci_stack->decline_reason){ 5854 uint8_t reason = hci_stack->decline_reason; 5855 hci_stack->decline_reason = 0; 5856 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5857 return true; 5858 } 5859 5860 if (hci_stack->gap_tasks_classic != 0){ 5861 hci_run_gap_tasks_classic(); 5862 return true; 5863 } 5864 5865 // start/stop inquiry 5866 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5867 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5868 if (hci_classic_operation_active() == false) 5869 #endif 5870 { 5871 uint8_t duration = hci_stack->inquiry_state; 5872 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5873 if (hci_stack->inquiry_max_period_length != 0){ 5874 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); 5875 } else { 5876 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5877 } 5878 return true; 5879 } 5880 } 5881 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5882 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5883 hci_send_cmd(&hci_inquiry_cancel); 5884 return true; 5885 } 5886 5887 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5888 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5889 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5890 return true; 5891 } 5892 5893 // remote name request 5894 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5895 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5896 if (hci_classic_operation_active() == false) 5897 #endif 5898 { 5899 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5900 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5901 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5902 return true; 5903 } 5904 } 5905 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5906 // Local OOB data 5907 if (hci_stack->classic_read_local_oob_data){ 5908 hci_stack->classic_read_local_oob_data = false; 5909 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5910 hci_send_cmd(&hci_read_local_extended_oob_data); 5911 } else { 5912 hci_send_cmd(&hci_read_local_oob_data); 5913 } 5914 } 5915 #endif 5916 // pairing 5917 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5918 uint8_t state = hci_stack->gap_pairing_state; 5919 uint8_t pin_code[PIN_CODE_LEN]; 5920 switch (state){ 5921 case GAP_PAIRING_STATE_SEND_PIN: 5922 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5923 memset(pin_code, 0, 16); 5924 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5925 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5926 break; 5927 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5928 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5929 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5930 break; 5931 case GAP_PAIRING_STATE_SEND_PASSKEY: 5932 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5933 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5934 break; 5935 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5936 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5937 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5938 break; 5939 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5940 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5941 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5942 break; 5943 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5944 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5945 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5946 break; 5947 default: 5948 break; 5949 } 5950 return true; 5951 } 5952 return false; 5953 } 5954 #endif 5955 5956 #ifdef ENABLE_BLE 5957 5958 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5959 static uint8_t hci_le_num_phys(uint8_t phys){ 5960 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5961 btstack_assert(phys); 5962 return num_bits_set[phys]; 5963 } 5964 #endif 5965 5966 #ifdef ENABLE_LE_CENTRAL 5967 static void hci_le_scan_stop(void){ 5968 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5969 if (hci_le_extended_advertising_supported()) { 5970 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5971 } else 5972 #endif 5973 { 5974 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5975 } 5976 } 5977 5978 static void 5979 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5980 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5981 if (hci_le_extended_advertising_supported()) { 5982 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5983 uint16_t le_connection_scan_interval[3]; 5984 uint16_t le_connection_scan_window[3]; 5985 uint16_t le_connection_interval_min[3]; 5986 uint16_t le_connection_interval_max[3]; 5987 uint16_t le_connection_latency[3]; 5988 uint16_t le_supervision_timeout[3]; 5989 uint16_t le_minimum_ce_length[3]; 5990 uint16_t le_maximum_ce_length[3]; 5991 5992 uint8_t i; 5993 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5994 for (i=0;i<num_phys;i++){ 5995 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5996 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5997 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5998 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5999 le_connection_latency[i] = hci_stack->le_connection_latency; 6000 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6001 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6002 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6003 } 6004 hci_send_cmd(&hci_le_extended_create_connection, 6005 initiator_filter_policy, 6006 hci_stack->le_connection_own_addr_type, // our addr type: 6007 address_type, // peer address type 6008 address, // peer bd addr 6009 hci_stack->le_connection_phys, // initiating PHY 6010 le_connection_scan_interval, // conn scan interval 6011 le_connection_scan_window, // conn scan windows 6012 le_connection_interval_min, // conn interval min 6013 le_connection_interval_max, // conn interval max 6014 le_connection_latency, // conn latency 6015 le_supervision_timeout, // conn latency 6016 le_minimum_ce_length, // min ce length 6017 le_maximum_ce_length // max ce length 6018 ); 6019 } else 6020 #endif 6021 { 6022 hci_send_cmd(&hci_le_create_connection, 6023 hci_stack->le_connection_scan_interval, // conn scan interval 6024 hci_stack->le_connection_scan_window, // conn scan windows 6025 initiator_filter_policy, // don't use whitelist 6026 address_type, // peer address type 6027 address, // peer bd addr 6028 hci_stack->le_connection_own_addr_type, // our addr type: 6029 hci_stack->le_connection_interval_min, // conn interval min 6030 hci_stack->le_connection_interval_max, // conn interval max 6031 hci_stack->le_connection_latency, // conn latency 6032 hci_stack->le_supervision_timeout, // conn latency 6033 hci_stack->le_minimum_ce_length, // min ce length 6034 hci_stack->le_maximum_ce_length // max ce length 6035 ); 6036 } 6037 } 6038 #endif 6039 6040 #ifdef ENABLE_LE_PERIPHERAL 6041 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6042 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6043 uint8_t operation = 0; 6044 if (pos == 0){ 6045 // first fragment or complete data 6046 operation |= 1; 6047 } 6048 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6049 // last fragment or complete data 6050 operation |= 2; 6051 } 6052 return operation; 6053 } 6054 #endif 6055 #endif 6056 6057 static bool hci_run_general_gap_le(void){ 6058 6059 btstack_linked_list_iterator_t lit; 6060 6061 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6062 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6063 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6064 hci_stack->le_resolvable_private_address_update_s = 0; 6065 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6066 return true; 6067 } 6068 #endif 6069 6070 // Phase 1: collect what to stop 6071 6072 #ifdef ENABLE_LE_CENTRAL 6073 bool scanning_stop = false; 6074 bool connecting_stop = false; 6075 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6076 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6077 bool periodic_sync_stop = false; 6078 #endif 6079 #endif 6080 #endif 6081 6082 #ifdef ENABLE_LE_PERIPHERAL 6083 bool advertising_stop = false; 6084 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6085 le_advertising_set_t * advertising_stop_set = NULL; 6086 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6087 bool periodic_advertising_stop = false; 6088 #endif 6089 #endif 6090 #endif 6091 6092 // check if own address changes 6093 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6094 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6095 6096 // check if whitelist needs modification 6097 bool whitelist_modification_pending = false; 6098 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6099 while (btstack_linked_list_iterator_has_next(&lit)){ 6100 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6101 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6102 whitelist_modification_pending = true; 6103 break; 6104 } 6105 } 6106 6107 // check if resolving list needs modification 6108 bool resolving_list_modification_pending = false; 6109 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6110 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6111 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6112 resolving_list_modification_pending = true; 6113 } 6114 #endif 6115 6116 #ifdef ENABLE_LE_CENTRAL 6117 6118 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6119 // check if periodic advertiser list needs modification 6120 bool periodic_list_modification_pending = false; 6121 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6122 while (btstack_linked_list_iterator_has_next(&lit)){ 6123 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6124 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6125 periodic_list_modification_pending = true; 6126 break; 6127 } 6128 } 6129 #endif 6130 6131 // scanning control 6132 if (hci_stack->le_scanning_active) { 6133 // stop if: 6134 // - parameter change required 6135 // - it's disabled 6136 // - whitelist change required but used for scanning 6137 // - resolving list modified 6138 // - own address changes 6139 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6140 if ((hci_stack->le_scanning_param_update) || 6141 !hci_stack->le_scanning_enabled || 6142 (scanning_uses_whitelist && whitelist_modification_pending) || 6143 resolving_list_modification_pending || 6144 random_address_change){ 6145 6146 scanning_stop = true; 6147 } 6148 } 6149 6150 // connecting control 6151 bool connecting_with_whitelist; 6152 switch (hci_stack->le_connecting_state){ 6153 case LE_CONNECTING_DIRECT: 6154 case LE_CONNECTING_WHITELIST: 6155 // stop connecting if: 6156 // - connecting uses white and whitelist modification pending 6157 // - if it got disabled 6158 // - resolving list modified 6159 // - own address changes 6160 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6161 if ((connecting_with_whitelist && whitelist_modification_pending) || 6162 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6163 resolving_list_modification_pending || 6164 random_address_change) { 6165 6166 connecting_stop = true; 6167 } 6168 break; 6169 default: 6170 break; 6171 } 6172 6173 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6174 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6175 // periodic sync control 6176 bool sync_with_advertiser_list; 6177 switch(hci_stack->le_periodic_sync_state){ 6178 case LE_CONNECTING_DIRECT: 6179 case LE_CONNECTING_WHITELIST: 6180 // stop sync if: 6181 // - sync with advertiser list and advertiser list modification pending 6182 // - if it got disabled 6183 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6184 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6185 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6186 periodic_sync_stop = true; 6187 } 6188 break; 6189 default: 6190 break; 6191 } 6192 #endif 6193 #endif 6194 6195 #endif /* ENABLE_LE_CENTRAL */ 6196 6197 #ifdef ENABLE_LE_PERIPHERAL 6198 // le advertisement control 6199 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6200 // stop if: 6201 // - parameter change required 6202 // - random address used in advertising and changes 6203 // - it's disabled 6204 // - whitelist change required but used for advertisement filter policy 6205 // - resolving list modified 6206 // - own address changes 6207 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6208 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6209 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6210 if (advertising_change || 6211 (advertising_uses_random_address && random_address_change) || 6212 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6213 (advertising_uses_whitelist && whitelist_modification_pending) || 6214 resolving_list_modification_pending || 6215 random_address_change) { 6216 6217 advertising_stop = true; 6218 } 6219 } 6220 6221 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6222 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6223 btstack_linked_list_iterator_t it; 6224 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6225 while (btstack_linked_list_iterator_has_next(&it)){ 6226 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6227 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6228 // stop if: 6229 // - parameter change required 6230 // - random address used in connectable advertising and changes 6231 // - it's disabled 6232 // - whitelist change required but used for advertisement filter policy 6233 // - resolving list modified 6234 // - own address changes 6235 // - advertisement set will be removed 6236 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6237 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6238 bool advertising_uses_random_address = 6239 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6240 advertising_connectable; 6241 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6242 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6243 bool advertising_set_random_address_change = 6244 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6245 bool advertising_set_will_be_removed = 6246 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6247 if (advertising_parameter_change || 6248 (advertising_uses_random_address && advertising_set_random_address_change) || 6249 (advertising_enabled == false) || 6250 (advertising_uses_whitelist && whitelist_modification_pending) || 6251 resolving_list_modification_pending || 6252 advertising_set_will_be_removed) { 6253 6254 advertising_stop = true; 6255 advertising_stop_set = advertising_set; 6256 break; 6257 } 6258 } 6259 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6260 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6261 // stop if: 6262 // - it's disabled 6263 // - parameter change required 6264 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6265 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6266 if ((periodic_enabled == false) || periodic_parameter_change){ 6267 periodic_advertising_stop = true; 6268 advertising_stop_set = advertising_set; 6269 } 6270 } 6271 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6272 } 6273 } 6274 #endif 6275 6276 #endif 6277 6278 6279 // Phase 2: stop everything that should be off during modifications 6280 6281 6282 // 2.1 Outgoing connection 6283 #ifdef ENABLE_LE_CENTRAL 6284 if (connecting_stop){ 6285 hci_send_cmd(&hci_le_create_connection_cancel); 6286 return true; 6287 } 6288 #endif 6289 6290 // 2.2 Scanning 6291 #ifdef ENABLE_LE_CENTRAL 6292 if (scanning_stop){ 6293 hci_stack->le_scanning_active = false; 6294 hci_le_scan_stop(); 6295 return true; 6296 } 6297 6298 // 2.3 Periodic Sync 6299 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6300 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6301 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6302 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6303 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6304 return true; 6305 } 6306 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6307 if (periodic_sync_stop){ 6308 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6309 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6310 return true; 6311 } 6312 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6313 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6314 #endif /* ENABLE_LE_CENTRAL */ 6315 6316 // 2.4 Advertising: legacy, extended, periodic 6317 #ifdef ENABLE_LE_PERIPHERAL 6318 if (advertising_stop){ 6319 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6320 if (hci_le_extended_advertising_supported()) { 6321 uint8_t advertising_stop_handle; 6322 if (advertising_stop_set != NULL){ 6323 advertising_stop_handle = advertising_stop_set->advertising_handle; 6324 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6325 } else { 6326 advertising_stop_handle = 0; 6327 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6328 } 6329 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6330 const uint16_t durations[] = { 0 }; 6331 const uint16_t max_events[] = { 0 }; 6332 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6333 } else 6334 #endif 6335 { 6336 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6337 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6338 } 6339 return true; 6340 } 6341 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6342 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6343 if (periodic_advertising_stop){ 6344 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6345 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6346 return true; 6347 } 6348 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6349 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6350 #endif /* ENABLE_LE_PERIPHERAL */ 6351 6352 6353 // Phase 3: modify 6354 6355 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6356 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6357 // GAP Privacy, notify clients upon upcoming random address change 6358 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6359 gap_privacy_clients_notify(hci_stack->le_random_address); 6360 } 6361 6362 // - wait until privacy update completed 6363 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6364 return false; 6365 } 6366 6367 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6368 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6369 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6370 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6371 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6372 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6373 #endif 6374 return true; 6375 } 6376 6377 #ifdef ENABLE_LE_CENTRAL 6378 if (hci_stack->le_scanning_param_update){ 6379 hci_stack->le_scanning_param_update = false; 6380 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6381 if (hci_le_extended_advertising_supported()){ 6382 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6383 uint8_t scan_types[2]; 6384 uint16_t scan_intervals[2]; 6385 uint16_t scan_windows[2]; 6386 6387 uint8_t i; 6388 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6389 for (i=0;i<num_phys;i++){ 6390 scan_types[i] = hci_stack->le_scan_type; 6391 scan_intervals[i] = hci_stack->le_scan_interval; 6392 scan_windows[i] = hci_stack->le_scan_window; 6393 } 6394 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6395 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6396 } else 6397 #endif 6398 { 6399 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6400 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6401 } 6402 return true; 6403 } 6404 #endif 6405 6406 #ifdef ENABLE_LE_PERIPHERAL 6407 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6408 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6409 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6410 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6411 if (hci_le_extended_advertising_supported()){ 6412 // map advertisment type to advertising event properties 6413 uint16_t adv_event_properties = 0; 6414 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6415 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6416 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6417 } 6418 hci_stack->le_advertising_set_in_current_command = 0; 6419 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6420 0, 6421 adv_event_properties, 6422 hci_stack->le_advertisements_interval_min, 6423 hci_stack->le_advertisements_interval_max, 6424 hci_stack->le_advertisements_channel_map, 6425 hci_stack->le_advertisements_own_addr_type, 6426 hci_stack->le_advertisements_direct_address_type, 6427 hci_stack->le_advertisements_direct_address, 6428 hci_stack->le_advertisements_filter_policy, 6429 0x7f, // tx power: no preference 6430 0x01, // primary adv phy: LE 1M 6431 0, // secondary adv max skip 6432 0x01, // secondary adv phy 6433 0, // adv sid 6434 0 // scan request notification 6435 ); 6436 } else 6437 #endif 6438 { 6439 hci_send_cmd(&hci_le_set_advertising_parameters, 6440 hci_stack->le_advertisements_interval_min, 6441 hci_stack->le_advertisements_interval_max, 6442 hci_stack->le_advertisements_type, 6443 hci_stack->le_advertisements_own_addr_type, 6444 hci_stack->le_advertisements_direct_address_type, 6445 hci_stack->le_advertisements_direct_address, 6446 hci_stack->le_advertisements_channel_map, 6447 hci_stack->le_advertisements_filter_policy); 6448 } 6449 return true; 6450 } 6451 6452 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6453 // assumption: only set if extended advertising is supported 6454 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6455 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6456 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6457 return true; 6458 } 6459 #endif 6460 6461 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6462 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6463 uint8_t adv_data_clean[31]; 6464 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6465 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6466 hci_stack->le_advertisements_data_len); 6467 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6468 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6469 if (hci_le_extended_advertising_supported()){ 6470 hci_stack->le_advertising_set_in_current_command = 0; 6471 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6472 } else 6473 #endif 6474 { 6475 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6476 } 6477 return true; 6478 } 6479 6480 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6481 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6482 uint8_t scan_data_clean[31]; 6483 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6484 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6485 hci_stack->le_scan_response_data_len); 6486 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6487 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6488 if (hci_le_extended_advertising_supported()){ 6489 hci_stack->le_advertising_set_in_current_command = 0; 6490 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6491 } else 6492 #endif 6493 { 6494 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6495 } 6496 return true; 6497 } 6498 6499 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6500 if (hci_le_extended_advertising_supported()) { 6501 btstack_linked_list_iterator_t it; 6502 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6503 while (btstack_linked_list_iterator_has_next(&it)){ 6504 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6505 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6506 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6507 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6508 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6509 return true; 6510 } 6511 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6512 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6513 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6514 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6515 advertising_set->advertising_handle, 6516 advertising_set->extended_params.advertising_event_properties, 6517 advertising_set->extended_params.primary_advertising_interval_min, 6518 advertising_set->extended_params.primary_advertising_interval_max, 6519 advertising_set->extended_params.primary_advertising_channel_map, 6520 advertising_set->extended_params.own_address_type, 6521 advertising_set->extended_params.peer_address_type, 6522 advertising_set->extended_params.peer_address, 6523 advertising_set->extended_params.advertising_filter_policy, 6524 advertising_set->extended_params.advertising_tx_power, 6525 advertising_set->extended_params.primary_advertising_phy, 6526 advertising_set->extended_params.secondary_advertising_max_skip, 6527 advertising_set->extended_params.secondary_advertising_phy, 6528 advertising_set->extended_params.advertising_sid, 6529 advertising_set->extended_params.scan_request_notification_enable 6530 ); 6531 return true; 6532 } 6533 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6534 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6535 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6536 return true; 6537 } 6538 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6539 uint16_t pos = advertising_set->adv_data_pos; 6540 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6541 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6542 if ((operation & 0x02) != 0){ 6543 // last fragment or complete data 6544 operation |= 2; 6545 advertising_set->adv_data_pos = 0; 6546 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6547 } else { 6548 advertising_set->adv_data_pos += data_to_upload; 6549 } 6550 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6551 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6552 return true; 6553 } 6554 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6555 uint16_t pos = advertising_set->scan_data_pos; 6556 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6557 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6558 if ((operation & 0x02) != 0){ 6559 advertising_set->scan_data_pos = 0; 6560 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6561 } else { 6562 advertising_set->scan_data_pos += data_to_upload; 6563 } 6564 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6565 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6566 return true; 6567 } 6568 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6569 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6570 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6571 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6572 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6573 advertising_set->advertising_handle, 6574 advertising_set->periodic_params.periodic_advertising_interval_min, 6575 advertising_set->periodic_params.periodic_advertising_interval_max, 6576 advertising_set->periodic_params.periodic_advertising_properties); 6577 return true; 6578 } 6579 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6580 uint16_t pos = advertising_set->periodic_data_pos; 6581 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6582 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6583 if ((operation & 0x02) != 0){ 6584 // last fragment or complete data 6585 operation |= 2; 6586 advertising_set->periodic_data_pos = 0; 6587 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6588 } else { 6589 advertising_set->periodic_data_pos += data_to_upload; 6590 } 6591 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6592 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6593 return true; 6594 } 6595 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6596 } 6597 } 6598 #endif 6599 6600 #endif 6601 6602 #ifdef ENABLE_LE_CENTRAL 6603 // if connect with whitelist was active and is not cancelled yet, wait until next time 6604 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6605 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6606 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6607 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6608 #endif 6609 #endif 6610 6611 // LE Whitelist Management 6612 if (whitelist_modification_pending){ 6613 // add/remove entries 6614 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6615 while (btstack_linked_list_iterator_has_next(&lit)){ 6616 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6617 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6618 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6619 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6620 bd_addr_type_t address_type = entry->address_type; 6621 bd_addr_t address; 6622 memcpy(address, entry->address, 6); 6623 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6624 // remove from whitelist if not scheduled for re-addition 6625 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6626 btstack_memory_whitelist_entry_free(entry); 6627 } 6628 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6629 return true; 6630 } 6631 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6632 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6633 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6634 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6635 return true; 6636 } 6637 } 6638 } 6639 6640 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6641 // LE Resolving List Management 6642 if (resolving_list_modification_pending) { 6643 uint16_t i; 6644 uint8_t null_16[16]; 6645 uint8_t local_irk_flipped[16]; 6646 const uint8_t *local_irk; 6647 switch (hci_stack->le_resolving_list_state) { 6648 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6649 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6650 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6651 return true; 6652 case LE_RESOLVING_LIST_READ_SIZE: 6653 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6654 hci_send_cmd(&hci_le_read_resolving_list_size); 6655 return true; 6656 case LE_RESOLVING_LIST_SEND_CLEAR: 6657 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6658 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6659 sizeof(hci_stack->le_resolving_list_add_entries)); 6660 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6661 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6662 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6663 sizeof(hci_stack->le_resolving_list_remove_entries)); 6664 hci_send_cmd(&hci_le_clear_resolving_list); 6665 return true; 6666 case LE_RESOLVING_LIST_SET_IRK: 6667 // set IRK used by RPA for undirected advertising 6668 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6669 local_irk = gap_get_persistent_irk(); 6670 reverse_128(local_irk, local_irk_flipped); 6671 memset(null_16, 0, sizeof(null_16)); 6672 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6673 null_16, local_irk_flipped); 6674 return true; 6675 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6676 // first remove old entries 6677 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6678 uint8_t offset = i >> 3; 6679 uint8_t mask = 1 << (i & 7); 6680 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6681 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6682 bd_addr_t peer_identity_addreses; 6683 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6684 sm_key_t peer_irk; 6685 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6686 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6687 6688 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6689 // trigger whitelist entry 'update' (work around for controller bug) 6690 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6691 while (btstack_linked_list_iterator_has_next(&lit)) { 6692 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6693 if (entry->address_type != peer_identity_addr_type) continue; 6694 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6695 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6696 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6697 } 6698 #endif 6699 6700 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6701 peer_identity_addreses); 6702 return true; 6703 } 6704 6705 // then add new entries 6706 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6707 uint8_t offset = i >> 3; 6708 uint8_t mask = 1 << (i & 7); 6709 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6710 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6711 bd_addr_t peer_identity_addreses; 6712 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6713 sm_key_t peer_irk; 6714 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6715 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6716 if (btstack_is_null(peer_irk, 16)) continue; 6717 local_irk = gap_get_persistent_irk(); 6718 // command uses format specifier 'P' that stores 16-byte value without flip 6719 uint8_t peer_irk_flipped[16]; 6720 reverse_128(local_irk, local_irk_flipped); 6721 reverse_128(peer_irk, peer_irk_flipped); 6722 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6723 peer_irk_flipped, local_irk_flipped); 6724 return true; 6725 } 6726 6727 // finally, set privacy mode 6728 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6729 uint8_t offset = i >> 3; 6730 uint8_t mask = 1 << (i & 7); 6731 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6732 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6733 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6734 // Network Privacy Mode is default 6735 continue; 6736 } 6737 bd_addr_t peer_identity_address; 6738 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6739 sm_key_t peer_irk; 6740 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6741 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6742 if (btstack_is_null(peer_irk, 16)) continue; 6743 // command uses format specifier 'P' that stores 16-byte value without flip 6744 uint8_t peer_irk_flipped[16]; 6745 reverse_128(peer_irk, peer_irk_flipped); 6746 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6747 return true; 6748 } 6749 break; 6750 6751 default: 6752 break; 6753 } 6754 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6755 } 6756 #endif 6757 6758 #ifdef ENABLE_LE_CENTRAL 6759 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6760 // LE Whitelist Management 6761 if (periodic_list_modification_pending){ 6762 // add/remove entries 6763 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6764 while (btstack_linked_list_iterator_has_next(&lit)){ 6765 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6766 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6767 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6768 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6769 return true; 6770 } 6771 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6772 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6773 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6774 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6775 return true; 6776 } 6777 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6778 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6779 btstack_memory_periodic_advertiser_list_entry_free(entry); 6780 } 6781 } 6782 } 6783 #endif 6784 #endif 6785 6786 #ifdef ENABLE_LE_CENTRAL 6787 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6788 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6789 if (hci_stack->le_past_set_default_params){ 6790 hci_stack->le_past_set_default_params = false; 6791 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6792 hci_stack->le_past_mode, 6793 hci_stack->le_past_skip, 6794 hci_stack->le_past_sync_timeout, 6795 hci_stack->le_past_cte_type); 6796 return true; 6797 } 6798 #endif 6799 #endif 6800 #endif 6801 6802 // post-pone all actions until stack is fully working 6803 if (hci_stack->state != HCI_STATE_WORKING) return false; 6804 6805 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6806 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6807 6808 // Phase 4: restore state 6809 6810 #ifdef ENABLE_LE_CENTRAL 6811 // re-start scanning 6812 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6813 hci_stack->le_scanning_active = true; 6814 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6815 if (hci_le_extended_advertising_supported()){ 6816 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6817 } else 6818 #endif 6819 { 6820 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6821 } 6822 return true; 6823 } 6824 #endif 6825 6826 #ifdef ENABLE_LE_CENTRAL 6827 // re-start connecting 6828 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6829 bd_addr_t null_addr; 6830 memset(null_addr, 0, 6); 6831 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6832 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6833 hci_send_le_create_connection(1, 0, null_addr); 6834 return true; 6835 } 6836 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6837 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6838 switch(hci_stack->le_periodic_sync_request){ 6839 case LE_CONNECTING_DIRECT: 6840 case LE_CONNECTING_WHITELIST: 6841 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6842 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6843 hci_stack->le_periodic_sync_options, 6844 hci_stack->le_periodic_sync_advertising_sid, 6845 hci_stack->le_periodic_sync_advertiser_address_type, 6846 hci_stack->le_periodic_sync_advertiser_address, 6847 hci_stack->le_periodic_sync_skip, 6848 hci_stack->le_periodic_sync_timeout, 6849 hci_stack->le_periodic_sync_cte_type); 6850 return true; 6851 default: 6852 break; 6853 } 6854 } 6855 #endif 6856 #endif 6857 6858 #ifdef ENABLE_LE_PERIPHERAL 6859 // re-start advertising 6860 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6861 // check if advertisements should be enabled given 6862 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6863 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6864 6865 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6866 if (hci_le_extended_advertising_supported()){ 6867 const uint8_t advertising_handles[] = { 0 }; 6868 const uint16_t durations[] = { 0 }; 6869 const uint16_t max_events[] = { 0 }; 6870 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6871 } else 6872 #endif 6873 { 6874 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6875 } 6876 return true; 6877 } 6878 6879 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6880 if (hci_le_extended_advertising_supported()) { 6881 btstack_linked_list_iterator_t it; 6882 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6883 while (btstack_linked_list_iterator_has_next(&it)) { 6884 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6885 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6886 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6887 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6888 const uint16_t durations[] = { advertising_set->enable_timeout }; 6889 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6890 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6891 return true; 6892 } 6893 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6894 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6895 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6896 uint8_t enable = 1; 6897 if (advertising_set->periodic_include_adi){ 6898 enable |= 2; 6899 } 6900 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6901 return true; 6902 } 6903 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6904 } 6905 } 6906 #endif 6907 #endif 6908 6909 return false; 6910 } 6911 6912 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6913 static bool hci_run_iso_tasks(void){ 6914 btstack_linked_list_iterator_t it; 6915 6916 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6917 return false; 6918 } 6919 6920 // BIG 6921 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6922 while (btstack_linked_list_iterator_has_next(&it)){ 6923 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6924 switch (big->state){ 6925 case LE_AUDIO_BIG_STATE_CREATE: 6926 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6927 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6928 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6929 hci_send_cmd(&hci_le_create_big, 6930 big->params->big_handle, 6931 big->params->advertising_handle, 6932 big->params->num_bis, 6933 big->params->sdu_interval_us, 6934 big->params->max_sdu, 6935 big->params->max_transport_latency_ms, 6936 big->params->rtn, 6937 big->params->phy, 6938 big->params->packing, 6939 big->params->framing, 6940 big->params->encryption, 6941 big->params->broadcast_code); 6942 return true; 6943 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6944 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6945 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); 6946 return true; 6947 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6948 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6949 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6950 return true; 6951 case LE_AUDIO_BIG_STATE_TERMINATE: 6952 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6953 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6954 return true; 6955 default: 6956 break; 6957 } 6958 } 6959 6960 // BIG Sync 6961 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6962 while (btstack_linked_list_iterator_has_next(&it)){ 6963 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6964 switch (big_sync->state){ 6965 case LE_AUDIO_BIG_STATE_CREATE: 6966 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6967 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6968 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6969 hci_send_cmd(&hci_le_big_create_sync, 6970 big_sync->params->big_handle, 6971 big_sync->params->sync_handle, 6972 big_sync->params->encryption, 6973 big_sync->params->broadcast_code, 6974 big_sync->params->mse, 6975 big_sync->params->big_sync_timeout_10ms, 6976 big_sync->params->num_bis, 6977 big_sync->params->bis_indices); 6978 return true; 6979 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6980 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6981 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); 6982 return true; 6983 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6984 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6985 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6986 return true; 6987 case LE_AUDIO_BIG_STATE_TERMINATE: 6988 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6989 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6990 return true; 6991 default: 6992 break; 6993 } 6994 } 6995 6996 // CIG 6997 bool cig_active; 6998 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6999 while (btstack_linked_list_iterator_has_next(&it)) { 7000 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7001 uint8_t i; 7002 // Set CIG Parameters 7003 uint8_t cis_id[MAX_NR_CIS]; 7004 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7005 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7006 uint8_t phy_c_to_p[MAX_NR_CIS]; 7007 uint8_t phy_p_to_c[MAX_NR_CIS]; 7008 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7009 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7010 switch (cig->state) { 7011 case LE_AUDIO_CIG_STATE_CREATE: 7012 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7013 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7014 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7015 le_audio_cig_params_t * params = cig->params; 7016 for (i = 0; i < params->num_cis; i++) { 7017 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7018 cis_id[i] = cis_params->cis_id; 7019 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7020 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7021 phy_c_to_p[i] = cis_params->phy_c_to_p; 7022 phy_p_to_c[i] = cis_params->phy_p_to_c; 7023 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7024 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7025 } 7026 hci_send_cmd(&hci_le_set_cig_parameters, 7027 cig->cig_id, 7028 params->sdu_interval_c_to_p, 7029 params->sdu_interval_p_to_c, 7030 params->worst_case_sca, 7031 params->packing, 7032 params->framing, 7033 params->max_transport_latency_c_to_p, 7034 params->max_transport_latency_p_to_c, 7035 params->num_cis, 7036 cis_id, 7037 max_sdu_c_to_p, 7038 max_sdu_p_to_c, 7039 phy_c_to_p, 7040 phy_p_to_c, 7041 rtn_c_to_p, 7042 rtn_p_to_c 7043 ); 7044 return true; 7045 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7046 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7047 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7048 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7049 for (i=0;i<cig->num_cis;i++){ 7050 cig->cis_setup_active[i] = true; 7051 } 7052 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7053 return true; 7054 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7055 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7056 // find next path to setup 7057 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7058 if (cig->cis_established[cis_index] == false) { 7059 continue; 7060 } 7061 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7062 bool setup = true; 7063 if (cis_direction == 0){ 7064 // 0 - input - host to controller 7065 // we are central => central to peripheral 7066 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7067 } else { 7068 // 1 - output - controller to host 7069 // we are central => peripheral to central 7070 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7071 } 7072 if (setup){ 7073 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7074 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7075 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7076 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); 7077 return true; 7078 } 7079 cig->state_vars.next_cis++; 7080 } 7081 // emit done 7082 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7083 break; 7084 case LE_AUDIO_CIG_STATE_REMOVE: 7085 // check if CIG Active 7086 cig_active = false; 7087 for (i = 0; i < cig->num_cis; i++) { 7088 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7089 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7090 if (stream != NULL){ 7091 cig_active = true; 7092 break; 7093 } 7094 } 7095 } 7096 if (cig_active == false){ 7097 btstack_linked_list_iterator_remove(&it); 7098 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7099 return true; 7100 } 7101 default: 7102 break; 7103 } 7104 } 7105 7106 // CIS Accept/Reject/Setup ISO Path/Close 7107 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7108 while (btstack_linked_list_iterator_has_next(&it)) { 7109 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7110 hci_con_handle_t con_handle; 7111 switch (iso_stream->state){ 7112 case HCI_ISO_STREAM_W2_ACCEPT: 7113 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7114 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7115 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7116 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7117 return true; 7118 case HCI_ISO_STREAM_W2_REJECT: 7119 con_handle = iso_stream->cis_handle; 7120 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7121 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7122 hci_iso_stream_finalize(iso_stream); 7123 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7124 return true; 7125 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7126 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7127 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7128 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7129 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); 7130 break; 7131 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7132 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7133 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7134 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7135 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); 7136 break; 7137 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7138 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7139 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7140 break; 7141 default: 7142 break; 7143 } 7144 } 7145 7146 return false; 7147 } 7148 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7149 #endif 7150 7151 static bool hci_run_general_pending_commands(void){ 7152 btstack_linked_item_t * it; 7153 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7154 hci_connection_t * connection = (hci_connection_t *) it; 7155 7156 switch(connection->state){ 7157 case SEND_CREATE_CONNECTION: 7158 switch(connection->address_type){ 7159 #ifdef ENABLE_CLASSIC 7160 case BD_ADDR_TYPE_ACL: 7161 log_info("sending hci_create_connection"); 7162 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7163 break; 7164 #endif 7165 default: 7166 #ifdef ENABLE_BLE 7167 #ifdef ENABLE_LE_CENTRAL 7168 log_info("sending hci_le_create_connection"); 7169 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7170 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7171 hci_send_le_create_connection(0, connection->address_type, connection->address); 7172 connection->state = SENT_CREATE_CONNECTION; 7173 #endif 7174 #endif 7175 break; 7176 } 7177 return true; 7178 7179 #ifdef ENABLE_CLASSIC 7180 case RECEIVED_CONNECTION_REQUEST: 7181 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7182 log_info("sending hci_accept_connection_request"); 7183 connection->state = ACCEPTED_CONNECTION_REQUEST; 7184 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7185 return true; 7186 } 7187 break; 7188 #endif 7189 case SEND_DISCONNECT: 7190 connection->state = SENT_DISCONNECT; 7191 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7192 return true; 7193 7194 default: 7195 break; 7196 } 7197 7198 // no further commands if connection is about to get shut down 7199 if (connection->state == SENT_DISCONNECT) continue; 7200 7201 #ifdef ENABLE_CLASSIC 7202 7203 // Handling link key request requires remote supported features 7204 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7205 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7206 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7207 7208 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7209 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7210 if (have_link_key && security_level_sufficient){ 7211 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7212 } else { 7213 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7214 } 7215 return true; 7216 } 7217 7218 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7219 log_info("denying to pin request"); 7220 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7221 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7222 return true; 7223 } 7224 7225 // security assessment requires remote features 7226 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7227 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7228 hci_ssp_assess_security_on_io_cap_request(connection); 7229 // 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 7230 } 7231 7232 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7233 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7234 // set authentication requirements: 7235 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7236 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7237 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7238 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7239 authreq |= 1; 7240 } 7241 bool bonding = hci_stack->bondable; 7242 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7243 // if we have received IO Cap Response, we're in responder role 7244 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7245 if (bonding && !remote_bonding){ 7246 log_info("Remote not bonding, dropping local flag"); 7247 bonding = false; 7248 } 7249 } 7250 if (bonding){ 7251 if (connection->bonding_flags & BONDING_DEDICATED){ 7252 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7253 } else { 7254 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7255 } 7256 } 7257 uint8_t have_oob_data = 0; 7258 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7259 if (connection->classic_oob_c_192 != NULL){ 7260 have_oob_data |= 1; 7261 } 7262 if (connection->classic_oob_c_256 != NULL){ 7263 have_oob_data |= 2; 7264 } 7265 #endif 7266 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7267 return true; 7268 } 7269 7270 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7271 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7272 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7273 return true; 7274 } 7275 7276 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7277 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7278 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7279 const uint8_t zero[16] = { 0 }; 7280 const uint8_t * r_192 = zero; 7281 const uint8_t * c_192 = zero; 7282 const uint8_t * r_256 = zero; 7283 const uint8_t * c_256 = zero; 7284 // verify P-256 OOB 7285 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7286 c_256 = connection->classic_oob_c_256; 7287 if (connection->classic_oob_r_256 != NULL) { 7288 r_256 = connection->classic_oob_r_256; 7289 } 7290 } 7291 // verify P-192 OOB 7292 if ((connection->classic_oob_c_192 != NULL)) { 7293 c_192 = connection->classic_oob_c_192; 7294 if (connection->classic_oob_r_192 != NULL) { 7295 r_192 = connection->classic_oob_r_192; 7296 } 7297 } 7298 7299 // assess security 7300 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7301 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7302 if (need_level_4 && !can_reach_level_4){ 7303 log_info("Level 4 required, but not possible -> abort"); 7304 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7305 // send oob negative reply 7306 c_256 = NULL; 7307 c_192 = NULL; 7308 } 7309 7310 // Reply 7311 if (c_256 != zero) { 7312 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7313 } else if (c_192 != zero){ 7314 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7315 } else { 7316 hci_stack->classic_oob_con_handle = connection->con_handle; 7317 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7318 } 7319 return true; 7320 } 7321 #endif 7322 7323 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7324 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7325 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7326 return true; 7327 } 7328 7329 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7330 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7331 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7332 return true; 7333 } 7334 7335 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7336 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7337 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7338 return true; 7339 } 7340 7341 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7342 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7343 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7344 connection->state = SENT_DISCONNECT; 7345 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7346 return true; 7347 } 7348 7349 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7350 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7351 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7352 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7353 return true; 7354 } 7355 7356 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7357 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7358 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7359 return true; 7360 } 7361 7362 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7363 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7364 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7365 return true; 7366 } 7367 7368 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7369 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7370 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7371 return true; 7372 } 7373 7374 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7375 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7376 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7377 return true; 7378 } 7379 7380 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7381 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7382 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7383 return true; 7384 } 7385 #endif 7386 7387 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7388 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7389 #ifdef ENABLE_CLASSIC 7390 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7391 #endif 7392 if (connection->state != SENT_DISCONNECT){ 7393 connection->state = SENT_DISCONNECT; 7394 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7395 return true; 7396 } 7397 } 7398 7399 #ifdef ENABLE_CLASSIC 7400 uint16_t sniff_min_interval; 7401 switch (connection->sniff_min_interval){ 7402 case 0: 7403 break; 7404 case 0xffff: 7405 connection->sniff_min_interval = 0; 7406 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7407 return true; 7408 default: 7409 sniff_min_interval = connection->sniff_min_interval; 7410 connection->sniff_min_interval = 0; 7411 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7412 return true; 7413 } 7414 7415 if (connection->sniff_subrating_max_latency != 0xffff){ 7416 uint16_t max_latency = connection->sniff_subrating_max_latency; 7417 connection->sniff_subrating_max_latency = 0; 7418 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7419 return true; 7420 } 7421 7422 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7423 uint8_t service_type = (uint8_t) connection->qos_service_type; 7424 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7425 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); 7426 return true; 7427 } 7428 7429 if (connection->request_role != HCI_ROLE_INVALID){ 7430 hci_role_t role = connection->request_role; 7431 connection->request_role = HCI_ROLE_INVALID; 7432 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7433 return true; 7434 } 7435 #endif 7436 7437 if (connection->gap_connection_tasks != 0){ 7438 #ifdef ENABLE_CLASSIC 7439 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7440 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7441 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7442 return true; 7443 } 7444 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7445 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7446 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7447 return true; 7448 } 7449 #endif 7450 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7451 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7452 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7453 return true; 7454 } 7455 #ifdef ENABLE_BLE 7456 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7457 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7458 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7459 return true; 7460 } 7461 #endif 7462 } 7463 7464 #ifdef ENABLE_BLE 7465 switch (connection->le_con_parameter_update_state){ 7466 // response to L2CAP CON PARAMETER UPDATE REQUEST 7467 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7468 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7469 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7470 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7471 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7472 return true; 7473 case CON_PARAMETER_UPDATE_REPLY: 7474 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7475 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7476 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7477 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7478 return true; 7479 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7480 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7481 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7482 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7483 return true; 7484 default: 7485 break; 7486 } 7487 if (connection->le_phy_update_all_phys != 0xffu){ 7488 uint8_t all_phys = connection->le_phy_update_all_phys; 7489 connection->le_phy_update_all_phys = 0xff; 7490 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); 7491 return true; 7492 } 7493 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7494 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7495 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7496 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7497 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7498 return true; 7499 } 7500 if (connection->le_past_advertising_handle != 0xff){ 7501 uint8_t advertising_handle = connection->le_past_advertising_handle; 7502 connection->le_past_advertising_handle = 0xff; 7503 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7504 return true; 7505 } 7506 #endif 7507 #endif 7508 } 7509 return false; 7510 } 7511 7512 static void hci_run(void){ 7513 7514 // stack state sub statemachines 7515 switch (hci_stack->state) { 7516 case HCI_STATE_INITIALIZING: 7517 hci_initializing_run(); 7518 break; 7519 case HCI_STATE_HALTING: 7520 hci_halting_run(); 7521 break; 7522 case HCI_STATE_FALLING_ASLEEP: 7523 hci_falling_asleep_run(); 7524 break; 7525 default: 7526 break; 7527 } 7528 7529 // allow to run after initialization to working transition 7530 if (hci_stack->state != HCI_STATE_WORKING){ 7531 return; 7532 } 7533 7534 bool done; 7535 7536 // send continuation fragments first, as they block the prepared packet buffer 7537 done = hci_run_acl_fragments(); 7538 if (done) return; 7539 7540 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7541 done = hci_run_iso_fragments(); 7542 if (done) return; 7543 #endif 7544 7545 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7546 // send host num completed packets next as they don't require num_cmd_packets > 0 7547 if (!hci_can_send_comand_packet_transport()) return; 7548 if (hci_stack->host_completed_packets){ 7549 hci_host_num_completed_packets(); 7550 return; 7551 } 7552 #endif 7553 7554 if (!hci_can_send_command_packet_now()) return; 7555 7556 // global/non-connection oriented commands 7557 7558 7559 #ifdef ENABLE_CLASSIC 7560 // general gap classic 7561 done = hci_run_general_gap_classic(); 7562 if (done) return; 7563 #endif 7564 7565 #ifdef ENABLE_BLE 7566 // general gap le 7567 done = hci_run_general_gap_le(); 7568 if (done) return; 7569 7570 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7571 // ISO related tasks, e.g. BIG create/terminate/sync 7572 done = hci_run_iso_tasks(); 7573 if (done) return; 7574 #endif 7575 #endif 7576 7577 // send pending HCI commands 7578 hci_run_general_pending_commands(); 7579 } 7580 7581 #ifdef ENABLE_CLASSIC 7582 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7583 // bits 6-9 are 'don't use' 7584 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7585 7586 // restrict packet types to local and remote supported 7587 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7588 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7589 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7590 } 7591 #endif 7592 7593 // funnel for sending cmd packet using single outgoing buffer 7594 static uint8_t hci_send_prepared_cmd_packet() { 7595 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7596 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7597 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7598 // release packet buffer on error or for synchronous transport implementations 7599 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7600 hci_release_packet_buffer(); 7601 } 7602 return status; 7603 } 7604 7605 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7606 // house-keeping 7607 7608 #ifdef ENABLE_CLASSIC 7609 bd_addr_t addr; 7610 hci_connection_t * conn; 7611 #endif 7612 #ifdef ENABLE_LE_CENTRAL 7613 uint8_t initiator_filter_policy; 7614 #endif 7615 7616 uint16_t opcode = little_endian_read_16(packet, 0); 7617 switch (opcode) { 7618 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7619 hci_stack->loopback_mode = packet[3]; 7620 break; 7621 7622 #ifdef ENABLE_CLASSIC 7623 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7624 reverse_bd_addr(&packet[3], addr); 7625 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7626 7627 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7628 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7629 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7630 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7631 } 7632 7633 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7634 if (!conn) { 7635 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7636 if (!conn) { 7637 // notify client that alloc failed 7638 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7639 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7640 } 7641 conn->state = SEND_CREATE_CONNECTION; 7642 } 7643 7644 log_info("conn state %u", conn->state); 7645 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7646 switch (conn->state) { 7647 // if connection active exists 7648 case OPEN: 7649 // and OPEN, emit connection complete command 7650 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7651 // packet not sent to controller 7652 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7653 case RECEIVED_DISCONNECTION_COMPLETE: 7654 // create connection triggered in disconnect complete event, let's do it now 7655 break; 7656 case SEND_CREATE_CONNECTION: 7657 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7658 if (hci_classic_operation_active()){ 7659 return ERROR_CODE_SUCCESS; 7660 } 7661 #endif 7662 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7663 break; 7664 default: 7665 // otherwise, just ignore as it is already in the open process 7666 // packet not sent to controller 7667 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7668 } 7669 conn->state = SENT_CREATE_CONNECTION; 7670 7671 // track outgoing connection 7672 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7673 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7674 break; 7675 7676 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7677 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7678 if (conn == NULL) { 7679 // neither SCO nor ACL connection for con handle 7680 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7681 } else { 7682 uint16_t remote_supported_sco_packets; 7683 switch (conn->address_type){ 7684 case BD_ADDR_TYPE_ACL: 7685 // assert SCO connection does not exit 7686 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7687 return ERROR_CODE_COMMAND_DISALLOWED; 7688 } 7689 // cache remote sco packet types 7690 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7691 7692 // allocate connection struct 7693 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7694 HCI_ROLE_MASTER); 7695 if (!conn) { 7696 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7697 } 7698 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7699 break; 7700 case BD_ADDR_TYPE_SCO: 7701 // update of existing SCO connection 7702 break; 7703 default: 7704 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7705 } 7706 } 7707 7708 // conn refers to hci connection of type sco now 7709 7710 conn->state = SENT_CREATE_CONNECTION; 7711 7712 // track outgoing connection to handle command status with error 7713 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7714 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7715 7716 // setup_synchronous_connection? Voice setting at offset 22 7717 // TODO: compare to current setting if sco connection already active 7718 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7719 7720 // derive sco payload length from packet types 7721 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7722 break; 7723 7724 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7725 // get SCO connection 7726 reverse_bd_addr(&packet[3], addr); 7727 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7728 if (conn == NULL){ 7729 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7730 } 7731 7732 conn->state = ACCEPTED_CONNECTION_REQUEST; 7733 7734 // track outgoing connection to handle command status with error 7735 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7736 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7737 7738 // accept_synchronous_connection? Voice setting at offset 18 7739 // TODO: compare to current setting if sco connection already active 7740 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7741 7742 // derive sco payload length from packet types 7743 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7744 break; 7745 #endif 7746 7747 #ifdef ENABLE_BLE 7748 #ifdef ENABLE_LE_CENTRAL 7749 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7750 // white list used? 7751 initiator_filter_policy = packet[7]; 7752 switch (initiator_filter_policy) { 7753 case 0: 7754 // whitelist not used 7755 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7756 break; 7757 case 1: 7758 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7759 break; 7760 default: 7761 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7762 break; 7763 } 7764 // track outgoing connection 7765 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7766 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7767 break; 7768 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7769 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7770 // white list used? 7771 initiator_filter_policy = packet[3]; 7772 switch (initiator_filter_policy) { 7773 case 0: 7774 // whitelist not used 7775 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7776 break; 7777 case 1: 7778 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7779 break; 7780 default: 7781 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7782 break; 7783 } 7784 // track outgoing connection 7785 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7786 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7787 break; 7788 #endif 7789 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7790 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7791 break; 7792 #endif 7793 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7794 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7795 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7796 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7797 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7798 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7799 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7800 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7801 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7802 case HCI_OPCODE_HCI_LE_READ_PHY: 7803 case HCI_OPCODE_HCI_LE_SET_PHY: 7804 // conection handle is first command parameter 7805 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7806 break; 7807 #endif 7808 #endif /* ENABLE_BLE */ 7809 default: 7810 break; 7811 } 7812 7813 hci_stack->num_cmd_packets--; 7814 7815 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7816 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7817 if (err != 0){ 7818 return ERROR_CODE_HARDWARE_FAILURE; 7819 } 7820 return ERROR_CODE_SUCCESS; 7821 } 7822 7823 // disconnect because of security block 7824 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7825 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7826 if (!connection) return; 7827 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7828 } 7829 7830 7831 // Configure Secure Simple Pairing 7832 7833 #ifdef ENABLE_CLASSIC 7834 7835 // enable will enable SSP during init 7836 void gap_ssp_set_enable(int enable){ 7837 hci_stack->ssp_enable = enable; 7838 } 7839 7840 static int hci_local_ssp_activated(void){ 7841 return gap_ssp_supported() && hci_stack->ssp_enable; 7842 } 7843 7844 // if set, BTstack will respond to io capability request using authentication requirement 7845 void gap_ssp_set_io_capability(int io_capability){ 7846 hci_stack->ssp_io_capability = io_capability; 7847 } 7848 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7849 hci_stack->ssp_authentication_requirement = authentication_requirement; 7850 } 7851 7852 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7853 void gap_ssp_set_auto_accept(int auto_accept){ 7854 hci_stack->ssp_auto_accept = auto_accept; 7855 } 7856 7857 void gap_secure_connections_enable(bool enable){ 7858 hci_stack->secure_connections_enable = enable; 7859 } 7860 bool gap_secure_connections_active(void){ 7861 return hci_stack->secure_connections_active; 7862 } 7863 7864 #endif 7865 7866 // va_list part of hci_send_cmd 7867 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7868 if (!hci_can_send_command_packet_now()){ 7869 log_error("hci_send_cmd called but cannot send packet now"); 7870 return ERROR_CODE_COMMAND_DISALLOWED; 7871 } 7872 7873 // for HCI INITIALIZATION 7874 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7875 hci_stack->last_cmd_opcode = cmd->opcode; 7876 7877 hci_reserve_packet_buffer(); 7878 uint8_t * packet = hci_stack->hci_packet_buffer; 7879 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7880 return hci_send_prepared_cmd_packet(); 7881 } 7882 7883 /** 7884 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7885 */ 7886 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7887 va_list argptr; 7888 va_start(argptr, cmd); 7889 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7890 va_end(argptr); 7891 return status; 7892 } 7893 7894 // Create various non-HCI events. 7895 // TODO: generalize, use table similar to hci_create_command 7896 7897 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7898 // dump packet 7899 if (dump) { 7900 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7901 } 7902 7903 // dispatch to all event handlers 7904 btstack_linked_list_iterator_t it; 7905 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7906 while (btstack_linked_list_iterator_has_next(&it)){ 7907 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7908 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7909 } 7910 } 7911 7912 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7913 if (!hci_stack->acl_packet_handler) return; 7914 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7915 } 7916 7917 #ifdef ENABLE_CLASSIC 7918 static void hci_notify_if_sco_can_send_now(void){ 7919 // notify SCO sender if waiting 7920 if (!hci_stack->sco_waiting_for_can_send_now) return; 7921 if (hci_can_send_sco_packet_now()){ 7922 hci_stack->sco_waiting_for_can_send_now = 0; 7923 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7924 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7925 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7926 } 7927 } 7928 7929 // parsing end emitting has been merged to reduce code size 7930 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7931 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7932 7933 uint8_t * eir_data; 7934 ad_context_t context; 7935 const uint8_t * name; 7936 uint8_t name_len; 7937 7938 if (size < 3) return; 7939 7940 int event_type = hci_event_packet_get_type(packet); 7941 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7942 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7943 7944 switch (event_type){ 7945 case HCI_EVENT_INQUIRY_RESULT: 7946 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7947 if (size != (3 + (num_responses * 14))) return; 7948 break; 7949 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7950 if (size != 257) return; 7951 if (num_responses != 1) return; 7952 break; 7953 default: 7954 return; 7955 } 7956 7957 // event[1] is set at the end 7958 int i; 7959 for (i=0; i<num_responses;i++){ 7960 memset(event, 0, sizeof(event)); 7961 event[0] = GAP_EVENT_INQUIRY_RESULT; 7962 uint8_t event_size = 27; // if name is not set by EIR 7963 7964 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7965 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7966 (void)memcpy(&event[9], 7967 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7968 3); // class of device 7969 (void)memcpy(&event[12], 7970 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7971 2); // clock offset 7972 7973 switch (event_type){ 7974 case HCI_EVENT_INQUIRY_RESULT: 7975 // 14,15,16,17 = 0, size 18 7976 break; 7977 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7978 event[14] = 1; 7979 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7980 // 16,17 = 0, size 18 7981 break; 7982 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7983 event[14] = 1; 7984 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7985 // EIR packets only contain a single inquiry response 7986 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7987 name = NULL; 7988 // Iterate over EIR data 7989 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7990 uint8_t data_type = ad_iterator_get_data_type(&context); 7991 uint8_t data_size = ad_iterator_get_data_len(&context); 7992 const uint8_t * data = ad_iterator_get_data(&context); 7993 // Prefer Complete Local Name over Shortened Local Name 7994 switch (data_type){ 7995 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7996 if (name) continue; 7997 /* fall through */ 7998 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7999 name = data; 8000 name_len = data_size; 8001 break; 8002 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8003 if (data_size != 8) break; 8004 event[16] = 1; 8005 memcpy(&event[17], data, 8); 8006 break; 8007 default: 8008 break; 8009 } 8010 } 8011 if (name){ 8012 event[25] = 1; 8013 // truncate name if needed 8014 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8015 event[26] = len; 8016 (void)memcpy(&event[27], name, len); 8017 event_size += len; 8018 } 8019 break; 8020 default: 8021 return; 8022 } 8023 event[1] = event_size - 2; 8024 hci_emit_event(event, event_size, 1); 8025 } 8026 } 8027 #endif 8028 8029 void hci_emit_state(void){ 8030 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8031 uint8_t event[3]; 8032 event[0] = BTSTACK_EVENT_STATE; 8033 event[1] = sizeof(event) - 2u; 8034 event[2] = hci_stack->state; 8035 hci_emit_event(event, sizeof(event), 1); 8036 } 8037 8038 #ifdef ENABLE_CLASSIC 8039 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8040 uint8_t event[13]; 8041 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8042 event[1] = sizeof(event) - 2; 8043 event[2] = status; 8044 little_endian_store_16(event, 3, con_handle); 8045 reverse_bd_addr(address, &event[5]); 8046 event[11] = 1; // ACL connection 8047 event[12] = 0; // encryption disabled 8048 hci_emit_event(event, sizeof(event), 1); 8049 } 8050 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8051 if (disable_l2cap_timeouts) return; 8052 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8053 uint8_t event[4]; 8054 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8055 event[1] = sizeof(event) - 2; 8056 little_endian_store_16(event, 2, conn->con_handle); 8057 hci_emit_event(event, sizeof(event), 1); 8058 } 8059 #endif 8060 8061 #ifdef ENABLE_BLE 8062 #ifdef ENABLE_LE_CENTRAL 8063 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){ 8064 uint8_t hci_event[21]; 8065 hci_event[0] = HCI_EVENT_LE_META; 8066 hci_event[1] = sizeof(hci_event) - 2u; 8067 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8068 hci_event[3] = status; 8069 little_endian_store_16(hci_event, 4, con_handle); 8070 hci_event[6] = 0; // TODO: role 8071 hci_event[7] = address_type; 8072 reverse_bd_addr(address, &hci_event[8]); 8073 little_endian_store_16(hci_event, 14, 0); // interval 8074 little_endian_store_16(hci_event, 16, 0); // latency 8075 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8076 hci_event[20] = 0; // master clock accuracy 8077 hci_emit_event(hci_event, sizeof(hci_event), 1); 8078 // emit GAP event, too 8079 uint8_t gap_event[36]; 8080 hci_create_gap_connection_complete_event(hci_event, gap_event); 8081 hci_emit_event(gap_event, sizeof(gap_event), 1); 8082 } 8083 #endif 8084 #endif 8085 8086 static void hci_emit_transport_packet_sent(void){ 8087 // notify upper stack that it might be possible to send again 8088 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8089 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8090 } 8091 8092 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8093 uint8_t event[6]; 8094 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8095 event[1] = sizeof(event) - 2u; 8096 event[2] = 0; // status = OK 8097 little_endian_store_16(event, 3, con_handle); 8098 event[5] = reason; 8099 hci_emit_event(event, sizeof(event), 1); 8100 } 8101 8102 static void hci_emit_nr_connections_changed(void){ 8103 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8104 uint8_t event[3]; 8105 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8106 event[1] = sizeof(event) - 2u; 8107 event[2] = nr_hci_connections(); 8108 hci_emit_event(event, sizeof(event), 1); 8109 } 8110 8111 static void hci_emit_hci_open_failed(void){ 8112 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8113 uint8_t event[2]; 8114 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8115 event[1] = sizeof(event) - 2u; 8116 hci_emit_event(event, sizeof(event), 1); 8117 } 8118 8119 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8120 log_info("hci_emit_dedicated_bonding_result %u ", status); 8121 uint8_t event[9]; 8122 int pos = 0; 8123 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8124 event[pos++] = sizeof(event) - 2u; 8125 event[pos++] = status; 8126 reverse_bd_addr(address, &event[pos]); 8127 hci_emit_event(event, sizeof(event), 1); 8128 } 8129 8130 8131 #ifdef ENABLE_CLASSIC 8132 8133 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8134 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8135 uint8_t event[5]; 8136 int pos = 0; 8137 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8138 event[pos++] = sizeof(event) - 2; 8139 little_endian_store_16(event, 2, con_handle); 8140 pos += 2; 8141 event[pos++] = level; 8142 hci_emit_event(event, sizeof(event), 1); 8143 } 8144 8145 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8146 if (!connection) return LEVEL_0; 8147 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8148 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8149 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8150 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8151 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8152 // LEVEL 4 always requires 128 bit encrytion key size 8153 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8154 security_level = LEVEL_3; 8155 } 8156 return security_level; 8157 } 8158 8159 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8160 uint8_t event[4]; 8161 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8162 event[1] = sizeof(event) - 2; 8163 event[2] = discoverable; 8164 event[3] = connectable; 8165 hci_emit_event(event, sizeof(event), 1); 8166 } 8167 8168 // query if remote side supports eSCO 8169 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8170 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8171 if (!connection) return false; 8172 return (connection->remote_supported_features[0] & 1) != 0; 8173 } 8174 8175 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8176 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8177 if (!connection) return 0; 8178 return connection->remote_supported_sco_packets; 8179 } 8180 8181 static bool hci_ssp_supported(hci_connection_t * connection){ 8182 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8183 return (connection->bonding_flags & mask) == mask; 8184 } 8185 8186 // query if remote side supports SSP 8187 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8188 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8189 if (!connection) return false; 8190 return hci_ssp_supported(connection) ? 1 : 0; 8191 } 8192 8193 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8194 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8195 } 8196 8197 /** 8198 * Check if remote supported features query has completed 8199 */ 8200 bool hci_remote_features_available(hci_con_handle_t handle){ 8201 hci_connection_t * connection = hci_connection_for_handle(handle); 8202 if (!connection) return false; 8203 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8204 } 8205 8206 /** 8207 * Trigger remote supported features query 8208 */ 8209 8210 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8211 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8212 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8213 } 8214 } 8215 8216 void hci_remote_features_query(hci_con_handle_t con_handle){ 8217 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8218 if (!connection) return; 8219 hci_trigger_remote_features_for_connection(connection); 8220 hci_run(); 8221 } 8222 8223 // GAP API 8224 /** 8225 * @bbrief enable/disable bonding. default is enabled 8226 * @praram enabled 8227 */ 8228 void gap_set_bondable_mode(int enable){ 8229 hci_stack->bondable = enable ? 1 : 0; 8230 } 8231 /** 8232 * @brief Get bondable mode. 8233 * @return 1 if bondable 8234 */ 8235 int gap_get_bondable_mode(void){ 8236 return hci_stack->bondable; 8237 } 8238 8239 /** 8240 * @brief map link keys to security levels 8241 */ 8242 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8243 switch (link_key_type){ 8244 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8245 return LEVEL_4; 8246 case COMBINATION_KEY: 8247 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8248 return LEVEL_3; 8249 default: 8250 return LEVEL_2; 8251 } 8252 } 8253 8254 /** 8255 * @brief map link keys to secure connection yes/no 8256 */ 8257 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8258 switch (link_key_type){ 8259 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8260 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8261 return true; 8262 default: 8263 return false; 8264 } 8265 } 8266 8267 /** 8268 * @brief map link keys to authenticated 8269 */ 8270 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8271 switch (link_key_type){ 8272 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8273 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8274 return true; 8275 default: 8276 return false; 8277 } 8278 } 8279 8280 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8281 log_info("gap_mitm_protection_required_for_security_level %u", level); 8282 return level > LEVEL_2; 8283 } 8284 8285 /** 8286 * @brief get current security level 8287 */ 8288 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8289 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8290 if (!connection) return LEVEL_0; 8291 return gap_security_level_for_connection(connection); 8292 } 8293 8294 /** 8295 * @brief request connection to device to 8296 * @result GAP_AUTHENTICATION_RESULT 8297 */ 8298 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8299 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8300 if (!connection){ 8301 hci_emit_security_level(con_handle, LEVEL_0); 8302 return; 8303 } 8304 8305 btstack_assert(hci_is_le_connection(connection) == false); 8306 8307 // 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) 8308 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8309 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8310 requested_level = LEVEL_4; 8311 } 8312 8313 gap_security_level_t current_level = gap_security_level(con_handle); 8314 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8315 requested_level, connection->requested_security_level, current_level); 8316 8317 // authentication active if authentication request was sent or planned level > 0 8318 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8319 if (authentication_active){ 8320 // authentication already active 8321 if (connection->requested_security_level < requested_level){ 8322 // increase requested level as new level is higher 8323 // TODO: handle re-authentication when done 8324 connection->requested_security_level = requested_level; 8325 } 8326 } else { 8327 // no request active, notify if security sufficient 8328 if (requested_level <= current_level){ 8329 hci_emit_security_level(con_handle, current_level); 8330 return; 8331 } 8332 8333 // store request 8334 connection->requested_security_level = requested_level; 8335 8336 // start to authenticate connection 8337 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8338 8339 // request remote features if not already active, also trigger hci_run 8340 hci_remote_features_query(con_handle); 8341 } 8342 } 8343 8344 /** 8345 * @brief start dedicated bonding with device. disconnect after bonding 8346 * @param device 8347 * @param request MITM protection 8348 * @result GAP_DEDICATED_BONDING_COMPLETE 8349 */ 8350 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8351 8352 // create connection state machine 8353 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8354 8355 if (!connection){ 8356 return BTSTACK_MEMORY_ALLOC_FAILED; 8357 } 8358 8359 // delete link key 8360 gap_drop_link_key_for_bd_addr(device); 8361 8362 // configure LEVEL_2/3, dedicated bonding 8363 connection->state = SEND_CREATE_CONNECTION; 8364 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8365 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8366 connection->bonding_flags = BONDING_DEDICATED; 8367 8368 hci_run(); 8369 8370 return 0; 8371 } 8372 8373 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8374 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8375 if (connection == NULL){ 8376 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8377 } 8378 if (defer){ 8379 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8380 } else { 8381 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8382 // trigger disconnect 8383 hci_run(); 8384 } 8385 return ERROR_CODE_SUCCESS; 8386 } 8387 8388 void gap_set_local_name(const char * local_name){ 8389 hci_stack->local_name = local_name; 8390 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8391 // also update EIR if not set by user 8392 if (hci_stack->eir_data == NULL){ 8393 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8394 } 8395 hci_run(); 8396 } 8397 #endif 8398 8399 8400 #ifdef ENABLE_BLE 8401 8402 #ifdef ENABLE_LE_CENTRAL 8403 void gap_start_scan(void){ 8404 hci_stack->le_scanning_enabled = true; 8405 hci_run(); 8406 } 8407 8408 void gap_stop_scan(void){ 8409 hci_stack->le_scanning_enabled = false; 8410 hci_run(); 8411 } 8412 8413 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8414 hci_stack->le_scan_type = scan_type; 8415 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8416 hci_stack->le_scan_interval = scan_interval; 8417 hci_stack->le_scan_window = scan_window; 8418 hci_stack->le_scanning_param_update = true; 8419 hci_run(); 8420 } 8421 8422 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8423 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8424 } 8425 8426 void gap_set_scan_duplicate_filter(bool enabled){ 8427 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8428 } 8429 8430 void gap_set_scan_phys(uint8_t phys){ 8431 // LE Coded and LE 1M PHY 8432 hci_stack->le_scan_phys = phys & 0x05; 8433 } 8434 8435 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8436 // disallow le connection if outgoing already active 8437 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8438 log_error("le connect already active"); 8439 return ERROR_CODE_COMMAND_DISALLOWED; 8440 } 8441 8442 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8443 if (conn == NULL) { 8444 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8445 if (conn == false){ 8446 // alloc failed 8447 log_info("gap_connect: failed to alloc hci_connection_t"); 8448 return BTSTACK_MEMORY_ALLOC_FAILED; 8449 } 8450 } else { 8451 switch (conn->state) { 8452 case RECEIVED_DISCONNECTION_COMPLETE: 8453 // connection was just disconnected, reset state and allow re-connect 8454 conn->role = HCI_ROLE_MASTER; 8455 break; 8456 default: 8457 return ERROR_CODE_COMMAND_DISALLOWED; 8458 } 8459 } 8460 8461 // set le connecting state 8462 if (hci_is_le_connection_type(addr_type)){ 8463 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8464 } 8465 8466 // trigger connect 8467 log_info("gap_connect: send create connection next"); 8468 conn->state = SEND_CREATE_CONNECTION; 8469 hci_run(); 8470 return ERROR_CODE_SUCCESS; 8471 } 8472 8473 // @assumption: only a single outgoing LE Connection exists 8474 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8475 btstack_linked_item_t *it; 8476 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8477 hci_connection_t * conn = (hci_connection_t *) it; 8478 if (hci_is_le_connection(conn)){ 8479 switch (conn->state){ 8480 case SEND_CREATE_CONNECTION: 8481 case SENT_CREATE_CONNECTION: 8482 return conn; 8483 default: 8484 break; 8485 }; 8486 } 8487 } 8488 return NULL; 8489 } 8490 8491 uint8_t gap_connect_cancel(void){ 8492 hci_connection_t * conn; 8493 switch (hci_stack->le_connecting_request){ 8494 case LE_CONNECTING_IDLE: 8495 break; 8496 case LE_CONNECTING_WHITELIST: 8497 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8498 hci_run(); 8499 break; 8500 case LE_CONNECTING_DIRECT: 8501 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8502 conn = gap_get_outgoing_le_connection(); 8503 if (conn == NULL){ 8504 hci_run(); 8505 } else { 8506 switch (conn->state){ 8507 case SEND_CREATE_CONNECTION: 8508 // skip sending create connection and emit event instead 8509 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8510 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8511 btstack_memory_hci_connection_free( conn ); 8512 break; 8513 case SENT_CREATE_CONNECTION: 8514 // let hci_run_general_gap_le cancel outgoing connection 8515 hci_run(); 8516 break; 8517 default: 8518 break; 8519 } 8520 } 8521 break; 8522 default: 8523 btstack_unreachable(); 8524 break; 8525 } 8526 return ERROR_CODE_SUCCESS; 8527 } 8528 8529 /** 8530 * @brief Set connection parameters for outgoing connections 8531 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8532 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8533 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8534 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8535 * @param conn_latency, default: 4 8536 * @param supervision_timeout (unit: 10ms), default: 720 ms 8537 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8538 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8539 */ 8540 8541 void gap_set_connection_phys(uint8_t phys){ 8542 // LE Coded, LE 1M, LE 2M PHY 8543 hci_stack->le_connection_phys = phys & 7; 8544 } 8545 8546 #endif 8547 8548 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8549 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8550 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8551 hci_stack->le_connection_scan_interval = conn_scan_interval; 8552 hci_stack->le_connection_scan_window = conn_scan_window; 8553 hci_stack->le_connection_interval_min = conn_interval_min; 8554 hci_stack->le_connection_interval_max = conn_interval_max; 8555 hci_stack->le_connection_latency = conn_latency; 8556 hci_stack->le_supervision_timeout = supervision_timeout; 8557 hci_stack->le_minimum_ce_length = min_ce_length; 8558 hci_stack->le_maximum_ce_length = max_ce_length; 8559 } 8560 8561 /** 8562 * @brief Updates the connection parameters for a given LE connection 8563 * @param handle 8564 * @param conn_interval_min (unit: 1.25ms) 8565 * @param conn_interval_max (unit: 1.25ms) 8566 * @param conn_latency 8567 * @param supervision_timeout (unit: 10ms) 8568 * @return 0 if ok 8569 */ 8570 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8571 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8572 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8573 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8574 connection->le_conn_interval_min = conn_interval_min; 8575 connection->le_conn_interval_max = conn_interval_max; 8576 connection->le_conn_latency = conn_latency; 8577 connection->le_supervision_timeout = supervision_timeout; 8578 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8579 hci_run(); 8580 return 0; 8581 } 8582 8583 /** 8584 * @brief Request an update of the connection parameter for a given LE connection 8585 * @param handle 8586 * @param conn_interval_min (unit: 1.25ms) 8587 * @param conn_interval_max (unit: 1.25ms) 8588 * @param conn_latency 8589 * @param supervision_timeout (unit: 10ms) 8590 * @return 0 if ok 8591 */ 8592 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8593 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8594 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8595 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8596 connection->le_conn_interval_min = conn_interval_min; 8597 connection->le_conn_interval_max = conn_interval_max; 8598 connection->le_conn_latency = conn_latency; 8599 connection->le_supervision_timeout = supervision_timeout; 8600 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8601 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8602 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8603 return 0; 8604 } 8605 8606 #ifdef ENABLE_LE_PERIPHERAL 8607 8608 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8609 static void hci_assert_advertisement_set_0_ready(void){ 8610 // force advertising set creation for legacy LE Advertising 8611 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8612 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8613 } 8614 } 8615 #endif 8616 8617 /** 8618 * @brief Set Advertisement Data 8619 * @param advertising_data_length 8620 * @param advertising_data (max 31 octets) 8621 * @note data is not copied, pointer has to stay valid 8622 */ 8623 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8624 hci_stack->le_advertisements_data_len = advertising_data_length; 8625 hci_stack->le_advertisements_data = advertising_data; 8626 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8627 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8628 hci_assert_advertisement_set_0_ready(); 8629 #endif 8630 hci_run(); 8631 } 8632 8633 /** 8634 * @brief Set Scan Response Data 8635 * @param advertising_data_length 8636 * @param advertising_data (max 31 octets) 8637 * @note data is not copied, pointer has to stay valid 8638 */ 8639 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8640 hci_stack->le_scan_response_data_len = scan_response_data_length; 8641 hci_stack->le_scan_response_data = scan_response_data; 8642 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8643 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8644 hci_assert_advertisement_set_0_ready(); 8645 #endif 8646 hci_run(); 8647 } 8648 8649 /** 8650 * @brief Set Advertisement Parameters 8651 * @param adv_int_min 8652 * @param adv_int_max 8653 * @param adv_type 8654 * @param direct_address_type 8655 * @param direct_address 8656 * @param channel_map 8657 * @param filter_policy 8658 * 8659 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8660 */ 8661 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8662 uint8_t direct_address_typ, bd_addr_t direct_address, 8663 uint8_t channel_map, uint8_t filter_policy) { 8664 8665 hci_stack->le_advertisements_interval_min = adv_int_min; 8666 hci_stack->le_advertisements_interval_max = adv_int_max; 8667 hci_stack->le_advertisements_type = adv_type; 8668 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8669 hci_stack->le_advertisements_channel_map = channel_map; 8670 hci_stack->le_advertisements_filter_policy = filter_policy; 8671 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8672 6); 8673 8674 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8675 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8676 hci_run(); 8677 } 8678 8679 /** 8680 * @brief Enable/Disable Advertisements 8681 * @param enabled 8682 */ 8683 void gap_advertisements_enable(int enabled){ 8684 if (enabled == 0){ 8685 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8686 } else { 8687 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8688 } 8689 hci_update_advertisements_enabled_for_current_roles(); 8690 hci_run(); 8691 } 8692 8693 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8694 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8695 btstack_linked_list_iterator_t it; 8696 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8697 while (btstack_linked_list_iterator_has_next(&it)){ 8698 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8699 if ( item->advertising_handle == advertising_handle ) { 8700 return item; 8701 } 8702 } 8703 return NULL; 8704 } 8705 8706 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8707 hci_stack->le_resolvable_private_address_update_s = update_s; 8708 hci_run(); 8709 return ERROR_CODE_SUCCESS; 8710 } 8711 8712 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8713 // find free advertisement handle 8714 uint8_t advertisement_handle; 8715 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8716 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8717 } 8718 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8719 // clear 8720 memset(storage, 0, sizeof(le_advertising_set_t)); 8721 // copy params 8722 storage->advertising_handle = advertisement_handle; 8723 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8724 // add to list 8725 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8726 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8727 *out_advertising_handle = advertisement_handle; 8728 // set tasks and start 8729 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8730 hci_run(); 8731 return ERROR_CODE_SUCCESS; 8732 } 8733 8734 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8735 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8736 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8737 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8738 // set tasks and start 8739 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8740 hci_run(); 8741 return ERROR_CODE_SUCCESS; 8742 } 8743 8744 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8745 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8746 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8747 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8748 return ERROR_CODE_SUCCESS; 8749 } 8750 8751 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8752 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8753 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8754 memcpy(advertising_set->random_address, random_address, 6); 8755 // set tasks and start 8756 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8757 hci_run(); 8758 return ERROR_CODE_SUCCESS; 8759 } 8760 8761 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8762 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8763 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8764 advertising_set->adv_data = advertising_data; 8765 advertising_set->adv_data_len = advertising_data_length; 8766 // set tasks and start 8767 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8768 hci_run(); 8769 return ERROR_CODE_SUCCESS; 8770 } 8771 8772 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){ 8773 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8774 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8775 advertising_set->scan_data = scan_response_data; 8776 advertising_set->scan_data_len = scan_response_data_length; 8777 // set tasks and start 8778 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8779 hci_run(); 8780 return ERROR_CODE_SUCCESS; 8781 } 8782 8783 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8784 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8785 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8786 advertising_set->enable_timeout = timeout; 8787 advertising_set->enable_max_scan_events = num_extended_advertising_events; 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_stop(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->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8799 hci_run(); 8800 return ERROR_CODE_SUCCESS; 8801 } 8802 8803 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8804 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8805 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8806 // set tasks and start 8807 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8808 hci_run(); 8809 return ERROR_CODE_SUCCESS; 8810 } 8811 8812 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8813 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8814 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8815 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8816 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8817 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8818 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8819 // set tasks and start 8820 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8821 hci_run(); 8822 return ERROR_CODE_SUCCESS; 8823 } 8824 8825 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8826 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8827 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8828 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8829 return ERROR_CODE_SUCCESS; 8830 } 8831 8832 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8833 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8834 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8835 advertising_set->periodic_data = periodic_data; 8836 advertising_set->periodic_data_len = periodic_data_length; 8837 // set tasks and start 8838 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8839 hci_run(); 8840 return ERROR_CODE_SUCCESS; 8841 } 8842 8843 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8844 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8845 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8846 // set tasks and start 8847 advertising_set->periodic_include_adi = include_adi; 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_stop(uint8_t advertising_handle){ 8854 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8855 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8856 // set tasks and start 8857 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8858 hci_run(); 8859 return ERROR_CODE_SUCCESS; 8860 } 8861 8862 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8863 hci_stack->le_past_mode = mode; 8864 hci_stack->le_past_skip = skip; 8865 hci_stack->le_past_sync_timeout = sync_timeout; 8866 hci_stack->le_past_cte_type = cte_type; 8867 hci_stack->le_past_set_default_params = true; 8868 hci_run(); 8869 return ERROR_CODE_SUCCESS; 8870 } 8871 8872 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8873 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8874 if (hci_connection == NULL){ 8875 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8876 } 8877 hci_connection->le_past_sync_handle = sync_handle; 8878 hci_connection->le_past_service_data = service_data; 8879 hci_run(); 8880 return ERROR_CODE_SUCCESS; 8881 } 8882 8883 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8884 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8885 if (hci_connection == NULL){ 8886 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8887 } 8888 hci_connection->le_past_advertising_handle = advertising_handle; 8889 hci_connection->le_past_service_data = service_data; 8890 hci_run(); 8891 return ERROR_CODE_SUCCESS; 8892 } 8893 8894 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8895 8896 #endif 8897 8898 #endif 8899 8900 void hci_le_set_own_address_type(uint8_t own_address_type){ 8901 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8902 if (own_address_type == hci_stack->le_own_addr_type) return; 8903 hci_stack->le_own_addr_type = own_address_type; 8904 8905 #ifdef ENABLE_LE_PERIPHERAL 8906 // update advertisement parameters, too 8907 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8908 hci_run(); 8909 #endif 8910 #ifdef ENABLE_LE_CENTRAL 8911 // note: we don't update scan parameters or modify ongoing connection attempts 8912 #endif 8913 } 8914 8915 void hci_le_random_address_set(const bd_addr_t random_address){ 8916 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8917 memcpy(hci_stack->le_random_address, random_address, 6); 8918 hci_stack->le_random_address_set = true; 8919 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8920 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8921 if (hci_le_extended_advertising_supported()){ 8922 hci_assert_advertisement_set_0_ready(); 8923 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8924 } 8925 #endif 8926 hci_run(); 8927 } 8928 8929 #endif 8930 8931 uint8_t gap_disconnect(hci_con_handle_t handle){ 8932 hci_connection_t * conn = hci_connection_for_handle(handle); 8933 if (!conn){ 8934 hci_emit_disconnection_complete(handle, 0); 8935 return 0; 8936 } 8937 // ignore if already disconnected 8938 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8939 return 0; 8940 } 8941 conn->state = SEND_DISCONNECT; 8942 hci_run(); 8943 return 0; 8944 } 8945 8946 int gap_read_rssi(hci_con_handle_t con_handle){ 8947 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8948 if (hci_connection == NULL) return 0; 8949 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8950 hci_run(); 8951 return 1; 8952 } 8953 8954 /** 8955 * @brief Get connection type 8956 * @param con_handle 8957 * @result connection_type 8958 */ 8959 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8960 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8961 if (!conn) return GAP_CONNECTION_INVALID; 8962 switch (conn->address_type){ 8963 case BD_ADDR_TYPE_LE_PUBLIC: 8964 case BD_ADDR_TYPE_LE_RANDOM: 8965 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8966 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8967 return GAP_CONNECTION_LE; 8968 case BD_ADDR_TYPE_SCO: 8969 return GAP_CONNECTION_SCO; 8970 case BD_ADDR_TYPE_ACL: 8971 return GAP_CONNECTION_ACL; 8972 default: 8973 return GAP_CONNECTION_INVALID; 8974 } 8975 } 8976 8977 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8978 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8979 if (!conn) return HCI_ROLE_INVALID; 8980 return (hci_role_t) conn->role; 8981 } 8982 8983 8984 #ifdef ENABLE_CLASSIC 8985 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8986 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8987 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8988 conn->request_role = role; 8989 hci_run(); 8990 return ERROR_CODE_SUCCESS; 8991 } 8992 #endif 8993 8994 #ifdef ENABLE_BLE 8995 8996 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){ 8997 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8998 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8999 9000 conn->le_phy_update_all_phys = all_phys; 9001 conn->le_phy_update_tx_phys = tx_phys; 9002 conn->le_phy_update_rx_phys = rx_phys; 9003 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9004 9005 hci_run(); 9006 9007 return 0; 9008 } 9009 9010 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9011 9012 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9013 // incorrect configuration: 9014 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9015 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9016 btstack_assert(false); 9017 #endif 9018 9019 // check if already in list 9020 btstack_linked_list_iterator_t it; 9021 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9022 while (btstack_linked_list_iterator_has_next(&it)) { 9023 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9024 if (entry->address_type != address_type) { 9025 continue; 9026 } 9027 if (memcmp(entry->address, address, 6) != 0) { 9028 continue; 9029 } 9030 9031 // if already on controller: 9032 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9033 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9034 // drop remove request 9035 entry->state = LE_WHITELIST_ON_CONTROLLER; 9036 return ERROR_CODE_SUCCESS; 9037 } else { 9038 // disallow as already on controller 9039 return ERROR_CODE_COMMAND_DISALLOWED; 9040 } 9041 } 9042 9043 // assume scheduled to add 9044 return ERROR_CODE_COMMAND_DISALLOWED; 9045 } 9046 9047 // alloc and add to list 9048 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9049 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9050 entry->address_type = address_type; 9051 (void)memcpy(entry->address, address, 6); 9052 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9053 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9054 return ERROR_CODE_SUCCESS; 9055 } 9056 9057 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9058 btstack_linked_list_iterator_t it; 9059 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9060 while (btstack_linked_list_iterator_has_next(&it)){ 9061 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9062 if (entry->address_type != address_type) { 9063 continue; 9064 } 9065 if (memcmp(entry->address, address, 6) != 0) { 9066 continue; 9067 } 9068 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9069 // remove from controller if already present 9070 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9071 } else { 9072 // directly remove entry from whitelist 9073 btstack_linked_list_iterator_remove(&it); 9074 btstack_memory_whitelist_entry_free(entry); 9075 } 9076 return ERROR_CODE_SUCCESS; 9077 } 9078 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9079 } 9080 9081 static void hci_whitelist_clear(void){ 9082 btstack_linked_list_iterator_t it; 9083 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9084 while (btstack_linked_list_iterator_has_next(&it)){ 9085 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9086 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9087 // remove from controller if already present 9088 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9089 continue; 9090 } 9091 // directly remove entry from whitelist 9092 btstack_linked_list_iterator_remove(&it); 9093 btstack_memory_whitelist_entry_free(entry); 9094 } 9095 } 9096 9097 /** 9098 * @brief Clear Whitelist 9099 * @return 0 if ok 9100 */ 9101 uint8_t gap_whitelist_clear(void){ 9102 hci_whitelist_clear(); 9103 hci_run(); 9104 return ERROR_CODE_SUCCESS; 9105 } 9106 9107 /** 9108 * @brief Add Device to Whitelist 9109 * @param address_typ 9110 * @param address 9111 * @return 0 if ok 9112 */ 9113 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9114 uint8_t status = hci_whitelist_add(address_type, address); 9115 if (status){ 9116 return status; 9117 } 9118 hci_run(); 9119 return ERROR_CODE_SUCCESS; 9120 } 9121 9122 /** 9123 * @brief Remove Device from Whitelist 9124 * @param address_typ 9125 * @param address 9126 * @return 0 if ok 9127 */ 9128 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9129 uint8_t status = hci_whitelist_remove(address_type, address); 9130 if (status){ 9131 return status; 9132 } 9133 hci_run(); 9134 return ERROR_CODE_SUCCESS; 9135 } 9136 9137 #ifdef ENABLE_LE_CENTRAL 9138 /** 9139 * @brief Connect with Whitelist 9140 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9141 * @return - if ok 9142 */ 9143 uint8_t gap_connect_with_whitelist(void){ 9144 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9145 return ERROR_CODE_COMMAND_DISALLOWED; 9146 } 9147 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9148 hci_run(); 9149 return ERROR_CODE_SUCCESS; 9150 } 9151 9152 /** 9153 * @brief Auto Connection Establishment - Start Connecting to device 9154 * @param address_typ 9155 * @param address 9156 * @return 0 if ok 9157 */ 9158 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9159 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9160 return ERROR_CODE_COMMAND_DISALLOWED; 9161 } 9162 9163 uint8_t status = hci_whitelist_add(address_type, address); 9164 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9165 return status; 9166 } 9167 9168 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9169 9170 hci_run(); 9171 return ERROR_CODE_SUCCESS; 9172 } 9173 9174 /** 9175 * @brief Auto Connection Establishment - Stop Connecting to device 9176 * @param address_typ 9177 * @param address 9178 * @return 0 if ok 9179 */ 9180 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9181 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9182 return ERROR_CODE_COMMAND_DISALLOWED; 9183 } 9184 9185 hci_whitelist_remove(address_type, address); 9186 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9187 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9188 } 9189 hci_run(); 9190 return 0; 9191 } 9192 9193 /** 9194 * @brief Auto Connection Establishment - Stop everything 9195 * @note Convenience function to stop all active auto connection attempts 9196 */ 9197 uint8_t gap_auto_connection_stop_all(void){ 9198 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9199 return ERROR_CODE_COMMAND_DISALLOWED; 9200 } 9201 hci_whitelist_clear(); 9202 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9203 hci_run(); 9204 return ERROR_CODE_SUCCESS; 9205 } 9206 9207 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9208 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9209 if (!conn) return 0; 9210 return conn->le_connection_interval; 9211 } 9212 #endif 9213 #endif 9214 9215 #ifdef ENABLE_CLASSIC 9216 /** 9217 * @brief Set Extended Inquiry Response data 9218 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9219 * @note has to be done before stack starts up 9220 */ 9221 void gap_set_extended_inquiry_response(const uint8_t * data){ 9222 hci_stack->eir_data = data; 9223 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9224 hci_run(); 9225 } 9226 9227 /** 9228 * @brief Start GAP Classic Inquiry 9229 * @param duration in 1.28s units 9230 * @return 0 if ok 9231 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9232 */ 9233 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9234 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9235 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9236 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9237 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9238 } 9239 hci_stack->inquiry_state = duration_in_1280ms_units; 9240 hci_stack->inquiry_max_period_length = 0; 9241 hci_stack->inquiry_min_period_length = 0; 9242 hci_run(); 9243 return 0; 9244 } 9245 9246 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9247 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9248 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9249 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9250 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9251 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9252 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9253 9254 hci_stack->inquiry_state = duration; 9255 hci_stack->inquiry_max_period_length = max_period_length; 9256 hci_stack->inquiry_min_period_length = min_period_length; 9257 hci_run(); 9258 return 0; 9259 } 9260 9261 /** 9262 * @brief Stop GAP Classic Inquiry 9263 * @return 0 if ok 9264 */ 9265 int gap_inquiry_stop(void){ 9266 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9267 // emit inquiry complete event, before it even started 9268 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9269 hci_emit_event(event, sizeof(event), 1); 9270 return 0; 9271 } 9272 switch (hci_stack->inquiry_state){ 9273 case GAP_INQUIRY_STATE_ACTIVE: 9274 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9275 hci_run(); 9276 return ERROR_CODE_SUCCESS; 9277 case GAP_INQUIRY_STATE_PERIODIC: 9278 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9279 hci_run(); 9280 return ERROR_CODE_SUCCESS; 9281 default: 9282 return ERROR_CODE_COMMAND_DISALLOWED; 9283 } 9284 } 9285 9286 void gap_inquiry_set_lap(uint32_t lap){ 9287 hci_stack->inquiry_lap = lap; 9288 } 9289 9290 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9291 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9292 hci_stack->inquiry_scan_window = inquiry_scan_window; 9293 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9294 hci_run(); 9295 } 9296 9297 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9298 { 9299 hci_stack->inquiry_tx_power_level = tx_power; 9300 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9301 hci_run(); 9302 } 9303 9304 9305 /** 9306 * @brief Remote Name Request 9307 * @param addr 9308 * @param page_scan_repetition_mode 9309 * @param clock_offset only used when bit 15 is set 9310 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9311 */ 9312 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9313 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9314 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9315 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9316 hci_stack->remote_name_clock_offset = clock_offset; 9317 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9318 hci_run(); 9319 return 0; 9320 } 9321 9322 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9323 hci_stack->gap_pairing_state = state; 9324 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9325 hci_run(); 9326 return 0; 9327 } 9328 9329 /** 9330 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9331 * @param addr 9332 * @param pin_data 9333 * @param pin_len 9334 * @return 0 if ok 9335 */ 9336 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9337 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9338 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9339 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9340 hci_stack->gap_pairing_pin_len = pin_len; 9341 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9342 } 9343 9344 /** 9345 * @brief Legacy Pairing Pin Code Response 9346 * @param addr 9347 * @param pin 9348 * @return 0 if ok 9349 */ 9350 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9351 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9352 } 9353 9354 /** 9355 * @brief Abort Legacy Pairing 9356 * @param addr 9357 * @param pin 9358 * @return 0 if ok 9359 */ 9360 int gap_pin_code_negative(bd_addr_t addr){ 9361 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9362 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9363 } 9364 9365 /** 9366 * @brief SSP Passkey Response 9367 * @param addr 9368 * @param passkey 9369 * @return 0 if ok 9370 */ 9371 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9372 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9373 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9374 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9375 } 9376 9377 /** 9378 * @brief Abort SSP Passkey Entry/Pairing 9379 * @param addr 9380 * @param pin 9381 * @return 0 if ok 9382 */ 9383 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9384 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9385 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9386 } 9387 9388 /** 9389 * @brief Accept SSP Numeric Comparison 9390 * @param addr 9391 * @param passkey 9392 * @return 0 if ok 9393 */ 9394 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9395 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9396 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9397 } 9398 9399 /** 9400 * @brief Abort SSP Numeric Comparison/Pairing 9401 * @param addr 9402 * @param pin 9403 * @return 0 if ok 9404 */ 9405 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9406 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9407 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9408 } 9409 9410 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9411 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9412 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9413 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9414 connectionSetAuthenticationFlags(conn, flag); 9415 hci_run(); 9416 return ERROR_CODE_SUCCESS; 9417 } 9418 #endif 9419 9420 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9421 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9422 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9423 } 9424 9425 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9426 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9427 } 9428 #endif 9429 9430 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9431 /** 9432 * @brief Report Remote OOB Data 9433 * @param bd_addr 9434 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9435 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9436 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9437 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9438 */ 9439 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){ 9440 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9441 if (connection == NULL) { 9442 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9443 } 9444 connection->classic_oob_c_192 = c_192; 9445 connection->classic_oob_r_192 = r_192; 9446 9447 // ignore P-256 if not supported by us 9448 if (hci_stack->secure_connections_active){ 9449 connection->classic_oob_c_256 = c_256; 9450 connection->classic_oob_r_256 = r_256; 9451 } 9452 9453 return ERROR_CODE_SUCCESS; 9454 } 9455 /** 9456 * @brief Generate new OOB data 9457 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9458 */ 9459 void gap_ssp_generate_oob_data(void){ 9460 hci_stack->classic_read_local_oob_data = true; 9461 hci_run(); 9462 } 9463 9464 #endif 9465 9466 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9467 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9468 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9469 if (connection == NULL) { 9470 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9471 } 9472 9473 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9474 connection->link_key_type = type; 9475 9476 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9477 } 9478 9479 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9480 /** 9481 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9482 * @param inquiry_mode see bluetooth_defines.h 9483 */ 9484 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9485 hci_stack->inquiry_mode = inquiry_mode; 9486 } 9487 9488 /** 9489 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9490 */ 9491 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9492 hci_stack->sco_voice_setting = voice_setting; 9493 } 9494 9495 /** 9496 * @brief Get SCO Voice Setting 9497 * @return current voice setting 9498 */ 9499 uint16_t hci_get_sco_voice_setting(void){ 9500 return hci_stack->sco_voice_setting; 9501 } 9502 9503 static int hci_have_usb_transport(void){ 9504 if (!hci_stack->hci_transport) return 0; 9505 const char * transport_name = hci_stack->hci_transport->name; 9506 if (!transport_name) return 0; 9507 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9508 } 9509 9510 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9511 uint16_t sco_packet_length = 0; 9512 9513 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9514 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9515 int multiplier; 9516 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9517 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9518 multiplier = 2; 9519 } else { 9520 multiplier = 1; 9521 } 9522 #endif 9523 9524 #ifdef ENABLE_SCO_OVER_HCI 9525 if (hci_have_usb_transport()){ 9526 // see Core Spec for H2 USB Transfer. 9527 // 3 byte SCO header + 24 bytes per connection 9528 // @note multiple sco connections not supported currently 9529 sco_packet_length = 3 + 24 * multiplier; 9530 } else { 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 } 9538 #endif 9539 #ifdef HAVE_SCO_TRANSPORT 9540 // 3 byte SCO header + SCO packet length over the air 9541 sco_packet_length = 3 + payload_size * multiplier; 9542 // assert that it still fits inside an SCO buffer 9543 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9544 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9545 } 9546 #endif 9547 return sco_packet_length; 9548 } 9549 9550 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9551 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9552 if (connection != NULL){ 9553 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9554 } 9555 return 0; 9556 } 9557 9558 uint16_t hci_get_sco_packet_length(void){ 9559 btstack_linked_list_iterator_t it; 9560 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9561 while (btstack_linked_list_iterator_has_next(&it)){ 9562 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9563 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9564 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9565 } 9566 } 9567 return 0; 9568 } 9569 9570 /** 9571 * @brief Sets the master/slave policy 9572 * @param policy (0: attempt to become master, 1: let connecting device decide) 9573 */ 9574 void hci_set_master_slave_policy(uint8_t policy){ 9575 hci_stack->master_slave_policy = policy; 9576 } 9577 9578 #endif 9579 9580 HCI_STATE hci_get_state(void){ 9581 return hci_stack->state; 9582 } 9583 9584 #ifdef ENABLE_CLASSIC 9585 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9586 hci_stack->gap_classic_accept_callback = accept_callback; 9587 } 9588 #endif 9589 9590 /** 9591 * @brief Set callback for Bluetooth Hardware Error 9592 */ 9593 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9594 hci_stack->hardware_error_callback = fn; 9595 } 9596 9597 void hci_disconnect_all(void){ 9598 btstack_linked_list_iterator_t it; 9599 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9600 while (btstack_linked_list_iterator_has_next(&it)){ 9601 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9602 if (con->state == SENT_DISCONNECT) continue; 9603 con->state = SEND_DISCONNECT; 9604 } 9605 hci_run(); 9606 } 9607 9608 uint16_t hci_get_manufacturer(void){ 9609 return hci_stack->manufacturer; 9610 } 9611 9612 #ifdef ENABLE_BLE 9613 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9614 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9615 if (!hci_con) return NULL; 9616 return &hci_con->sm_connection; 9617 } 9618 9619 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9620 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9621 #endif 9622 9623 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9624 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9625 if (hci_connection == NULL) return 0; 9626 if (hci_is_le_connection(hci_connection)){ 9627 #ifdef ENABLE_BLE 9628 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9629 if (sm_conn->sm_connection_encrypted != 0u) { 9630 return sm_conn->sm_actual_encryption_key_size; 9631 } 9632 #endif 9633 } else { 9634 #ifdef ENABLE_CLASSIC 9635 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9636 return hci_connection->encryption_key_size; 9637 } 9638 #endif 9639 } 9640 return 0; 9641 } 9642 9643 bool gap_authenticated(hci_con_handle_t con_handle){ 9644 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9645 if (hci_connection == NULL) return false; 9646 9647 switch (hci_connection->address_type){ 9648 #ifdef ENABLE_BLE 9649 case BD_ADDR_TYPE_LE_PUBLIC: 9650 case BD_ADDR_TYPE_LE_RANDOM: 9651 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9652 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9653 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9654 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9655 #endif 9656 #ifdef ENABLE_CLASSIC 9657 case BD_ADDR_TYPE_SCO: 9658 case BD_ADDR_TYPE_ACL: 9659 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9660 #endif 9661 default: 9662 return false; 9663 } 9664 } 9665 9666 bool gap_secure_connection(hci_con_handle_t con_handle){ 9667 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9668 if (hci_connection == NULL) return 0; 9669 9670 switch (hci_connection->address_type){ 9671 #ifdef ENABLE_BLE 9672 case BD_ADDR_TYPE_LE_PUBLIC: 9673 case BD_ADDR_TYPE_LE_RANDOM: 9674 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9675 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9676 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9677 return hci_connection->sm_connection.sm_connection_sc; 9678 #endif 9679 #ifdef ENABLE_CLASSIC 9680 case BD_ADDR_TYPE_SCO: 9681 case BD_ADDR_TYPE_ACL: 9682 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9683 #endif 9684 default: 9685 return false; 9686 } 9687 } 9688 9689 bool gap_bonded(hci_con_handle_t con_handle){ 9690 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9691 if (hci_connection == NULL) return 0; 9692 9693 #ifdef ENABLE_CLASSIC 9694 link_key_t link_key; 9695 link_key_type_t link_key_type; 9696 #endif 9697 switch (hci_connection->address_type){ 9698 #ifdef ENABLE_BLE 9699 case BD_ADDR_TYPE_LE_PUBLIC: 9700 case BD_ADDR_TYPE_LE_RANDOM: 9701 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9702 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9703 return hci_connection->sm_connection.sm_le_db_index >= 0; 9704 #endif 9705 #ifdef ENABLE_CLASSIC 9706 case BD_ADDR_TYPE_SCO: 9707 case BD_ADDR_TYPE_ACL: 9708 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9709 #endif 9710 default: 9711 return false; 9712 } 9713 } 9714 9715 #ifdef ENABLE_BLE 9716 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9717 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9718 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9719 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9720 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9721 return sm_conn->sm_connection_authorization_state; 9722 } 9723 #endif 9724 9725 #ifdef ENABLE_CLASSIC 9726 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){ 9727 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9728 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9729 conn->sniff_min_interval = sniff_min_interval; 9730 conn->sniff_max_interval = sniff_max_interval; 9731 conn->sniff_attempt = sniff_attempt; 9732 conn->sniff_timeout = sniff_timeout; 9733 hci_run(); 9734 return 0; 9735 } 9736 9737 /** 9738 * @brief Exit Sniff mode 9739 * @param con_handle 9740 @ @return 0 if ok 9741 */ 9742 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9743 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9744 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9745 conn->sniff_min_interval = 0xffff; 9746 hci_run(); 9747 return 0; 9748 } 9749 9750 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){ 9751 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9752 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9753 conn->sniff_subrating_max_latency = max_latency; 9754 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9755 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9756 hci_run(); 9757 return ERROR_CODE_SUCCESS; 9758 } 9759 9760 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){ 9761 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9762 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9763 conn->qos_service_type = service_type; 9764 conn->qos_token_rate = token_rate; 9765 conn->qos_peak_bandwidth = peak_bandwidth; 9766 conn->qos_latency = latency; 9767 conn->qos_delay_variation = delay_variation; 9768 hci_run(); 9769 return ERROR_CODE_SUCCESS; 9770 } 9771 9772 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9773 hci_stack->new_page_scan_interval = page_scan_interval; 9774 hci_stack->new_page_scan_window = page_scan_window; 9775 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9776 hci_run(); 9777 } 9778 9779 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9780 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9781 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9782 hci_run(); 9783 } 9784 9785 void gap_set_page_timeout(uint16_t page_timeout){ 9786 hci_stack->page_timeout = page_timeout; 9787 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9788 hci_run(); 9789 } 9790 9791 #endif 9792 9793 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9794 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9795 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9796 if (le_device_db_index >= le_device_db_max_count()) return; 9797 uint8_t offset = le_device_db_index >> 3; 9798 uint8_t mask = 1 << (le_device_db_index & 7); 9799 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9800 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9801 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9802 // note: go back to remove entries, otherwise, a remove + add will skip the add 9803 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9804 } 9805 } 9806 9807 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9808 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9809 if (le_device_db_index >= le_device_db_max_count()) return; 9810 uint8_t offset = le_device_db_index >> 3; 9811 uint8_t mask = 1 << (le_device_db_index & 7); 9812 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9813 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9814 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9815 } 9816 } 9817 9818 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9819 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9820 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9821 } 9822 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9823 // restart le resolving list update 9824 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9825 } 9826 return ERROR_CODE_SUCCESS; 9827 } 9828 9829 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9830 hci_stack->le_privacy_mode = privacy_mode; 9831 } 9832 #endif 9833 9834 #ifdef ENABLE_BLE 9835 #ifdef ENABLE_LE_CENTRAL 9836 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9837 9838 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9839 9840 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9841 // incorrect configuration: 9842 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9843 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9844 btstack_assert(false); 9845 #endif 9846 9847 // check if already in list 9848 btstack_linked_list_iterator_t it; 9849 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9850 while (btstack_linked_list_iterator_has_next(&it)) { 9851 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9852 if (entry->sid != advertising_sid) { 9853 continue; 9854 } 9855 if (entry->address_type != address_type) { 9856 continue; 9857 } 9858 if (memcmp(entry->address, address, 6) != 0) { 9859 continue; 9860 } 9861 // disallow if already scheduled to add 9862 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9863 return ERROR_CODE_COMMAND_DISALLOWED; 9864 } 9865 // still on controller, but scheduled to remove -> re-add 9866 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9867 return ERROR_CODE_SUCCESS; 9868 } 9869 // alloc and add to list 9870 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9871 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9872 entry->sid = advertising_sid; 9873 entry->address_type = address_type; 9874 (void)memcpy(entry->address, address, 6); 9875 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9876 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9877 return ERROR_CODE_SUCCESS; 9878 } 9879 9880 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9881 btstack_linked_list_iterator_t it; 9882 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9883 while (btstack_linked_list_iterator_has_next(&it)){ 9884 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9885 if (entry->sid != advertising_sid) { 9886 continue; 9887 } 9888 if (entry->address_type != address_type) { 9889 continue; 9890 } 9891 if (memcmp(entry->address, address, 6) != 0) { 9892 continue; 9893 } 9894 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9895 // remove from controller if already present 9896 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9897 } else { 9898 // directly remove entry from whitelist 9899 btstack_linked_list_iterator_remove(&it); 9900 btstack_memory_periodic_advertiser_list_entry_free(entry); 9901 } 9902 return ERROR_CODE_SUCCESS; 9903 } 9904 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9905 } 9906 9907 static void hci_periodic_advertiser_list_clear(void){ 9908 btstack_linked_list_iterator_t it; 9909 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9910 while (btstack_linked_list_iterator_has_next(&it)){ 9911 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9912 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9913 // remove from controller if already present 9914 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9915 continue; 9916 } 9917 // directly remove entry from whitelist 9918 btstack_linked_list_iterator_remove(&it); 9919 btstack_memory_periodic_advertiser_list_entry_free(entry); 9920 } 9921 } 9922 9923 uint8_t gap_periodic_advertiser_list_clear(void){ 9924 hci_periodic_advertiser_list_clear(); 9925 hci_run(); 9926 return ERROR_CODE_SUCCESS; 9927 } 9928 9929 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9930 uint8_t status = hci_periodic_advertiser_list_add(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_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9939 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9940 if (status){ 9941 return status; 9942 } 9943 hci_run(); 9944 return ERROR_CODE_SUCCESS; 9945 } 9946 9947 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9948 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9949 // abort if already active 9950 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9951 return ERROR_CODE_COMMAND_DISALLOWED; 9952 } 9953 // store request 9954 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9955 hci_stack->le_periodic_sync_options = options; 9956 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9957 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9958 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9959 hci_stack->le_periodic_sync_skip = skip; 9960 hci_stack->le_periodic_sync_timeout = sync_timeout; 9961 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9962 9963 hci_run(); 9964 return ERROR_CODE_SUCCESS; 9965 } 9966 9967 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9968 // abort if not requested 9969 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9970 return ERROR_CODE_COMMAND_DISALLOWED; 9971 } 9972 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9973 hci_run(); 9974 return ERROR_CODE_SUCCESS; 9975 } 9976 9977 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9978 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9979 return ERROR_CODE_COMMAND_DISALLOWED; 9980 } 9981 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9982 hci_run(); 9983 return ERROR_CODE_SUCCESS; 9984 } 9985 9986 #endif 9987 #endif 9988 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9989 static hci_iso_stream_t * 9990 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9991 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9992 if (iso_stream != NULL){ 9993 iso_stream->iso_type = iso_type; 9994 iso_stream->state = state; 9995 iso_stream->group_id = group_id; 9996 iso_stream->stream_id = stream_id; 9997 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9998 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9999 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10000 } 10001 return iso_stream; 10002 } 10003 10004 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10005 btstack_linked_list_iterator_t it; 10006 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10007 while (btstack_linked_list_iterator_has_next(&it)){ 10008 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10009 if (iso_stream->cis_handle == con_handle ) { 10010 return iso_stream; 10011 } 10012 } 10013 return NULL; 10014 } 10015 10016 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10017 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10018 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10019 btstack_memory_hci_iso_stream_free(iso_stream); 10020 } 10021 10022 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10023 btstack_linked_list_iterator_t it; 10024 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10025 while (btstack_linked_list_iterator_has_next(&it)){ 10026 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10027 if ((iso_stream->group_id == group_id) && 10028 (iso_stream->iso_type == iso_type)){ 10029 btstack_linked_list_iterator_remove(&it); 10030 btstack_memory_hci_iso_stream_free(iso_stream); 10031 } 10032 } 10033 } 10034 10035 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10036 btstack_linked_list_iterator_t it; 10037 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10038 while (btstack_linked_list_iterator_has_next(&it)){ 10039 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10040 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10041 (iso_stream->group_id == group_id)){ 10042 btstack_linked_list_iterator_remove(&it); 10043 btstack_memory_hci_iso_stream_free(iso_stream); 10044 } 10045 } 10046 } 10047 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10048 btstack_linked_list_iterator_t it; 10049 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10050 while (btstack_linked_list_iterator_has_next(&it)){ 10051 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10052 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10053 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10054 } 10055 } 10056 } 10057 10058 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10059 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10060 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10061 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10062 return (sdu_len_offset + 2 + sdu_len) == size; 10063 } 10064 10065 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10066 if (iso_stream == NULL){ 10067 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10068 return; 10069 } 10070 10071 if (hci_stack->iso_packet_handler == NULL) { 10072 return; 10073 } 10074 10075 // parse header 10076 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10077 uint16_t data_total_length = little_endian_read_16(packet, 2); 10078 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10079 10080 // assert packet is complete 10081 if ((data_total_length + 4u) != size){ 10082 return; 10083 } 10084 10085 if ((pb_flag & 0x01) == 0){ 10086 if (pb_flag == 0x02){ 10087 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10088 if (hci_iso_sdu_complete(packet, size)) { 10089 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10090 } 10091 } else { 10092 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10093 if (size > sizeof(iso_stream->reassembly_buffer)){ 10094 return; 10095 } 10096 memcpy(iso_stream->reassembly_buffer, packet, size); 10097 // fix pb_flag 10098 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10099 iso_stream->reassembly_pos = size; 10100 } 10101 } else { 10102 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10103 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10104 if (ts_flag != 0){ 10105 return; 10106 } 10107 // append fragment 10108 if (iso_stream->reassembly_pos == 0){ 10109 return; 10110 } 10111 10112 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10113 // reset reassembly buffer 10114 iso_stream->reassembly_pos = 0; 10115 return; 10116 } 10117 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10118 iso_stream->reassembly_pos += data_total_length; 10119 10120 // deliver if last fragment and SDU complete 10121 if (pb_flag == 0x03){ 10122 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10123 // fix data_total_length 10124 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10125 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10126 } 10127 // reset reassembly buffer 10128 iso_stream->reassembly_pos = 0; 10129 } 10130 } 10131 } 10132 10133 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10134 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10135 uint16_t pos = 0; 10136 event[pos++] = HCI_EVENT_META_GAP; 10137 event[pos++] = 4 + (2 * big->num_bis); 10138 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10139 event[pos++] = status; 10140 event[pos++] = big->big_handle; 10141 event[pos++] = big->num_bis; 10142 uint8_t i; 10143 for (i=0;i<big->num_bis;i++){ 10144 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10145 pos += 2; 10146 } 10147 hci_emit_event(event, pos, 0); 10148 } 10149 10150 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10151 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10152 uint16_t pos = 0; 10153 event[pos++] = HCI_EVENT_META_GAP; 10154 event[pos++] = 4 + (2 * cig->num_cis); 10155 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10156 event[pos++] = status; 10157 event[pos++] = cig->cig_id; 10158 event[pos++] = cig->num_cis; 10159 uint8_t i; 10160 for (i=0;i<cig->num_cis;i++){ 10161 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10162 pos += 2; 10163 } 10164 hci_emit_event(event, pos, 0); 10165 } 10166 10167 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10168 uint16_t pos = 0; 10169 event[pos++] = HCI_EVENT_META_GAP; 10170 event[pos++] = 8; 10171 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10172 event[pos++] = status; 10173 event[pos++] = iso_stream->group_id; 10174 event[pos++] = iso_stream->stream_id; 10175 little_endian_store_16(event, pos, iso_stream->cis_handle); 10176 pos += 2; 10177 little_endian_store_16(event, pos, iso_stream->acl_handle); 10178 pos += 2; 10179 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10180 pos += 2; 10181 event[pos++] = iso_stream->number_of_subevents; 10182 event[pos++] = iso_stream->burst_number_c_to_p; 10183 event[pos++] = iso_stream->burst_number_p_to_c; 10184 event[pos++] = iso_stream->flush_timeout_c_to_p; 10185 event[pos++] = iso_stream->flush_timeout_p_to_c; 10186 return pos; 10187 } 10188 10189 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10190 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10191 // cache data before finalizing struct 10192 uint8_t event [17]; 10193 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10194 btstack_assert(pos <= sizeof(event)); 10195 if (status != ERROR_CODE_SUCCESS){ 10196 hci_iso_stream_finalize(iso_stream); 10197 } 10198 hci_emit_event(event, pos, 0); 10199 } 10200 10201 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10202 uint8_t event [4]; 10203 uint16_t pos = 0; 10204 event[pos++] = HCI_EVENT_META_GAP; 10205 event[pos++] = 2; 10206 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10207 event[pos++] = big->big_handle; 10208 hci_emit_event(event, pos, 0); 10209 } 10210 10211 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10212 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10213 uint16_t pos = 0; 10214 event[pos++] = HCI_EVENT_META_GAP; 10215 event[pos++] = 4; 10216 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10217 event[pos++] = status; 10218 event[pos++] = big_sync->big_handle; 10219 event[pos++] = big_sync->num_bis; 10220 uint8_t i; 10221 for (i=0;i<big_sync->num_bis;i++){ 10222 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10223 pos += 2; 10224 } 10225 hci_emit_event(event, pos, 0); 10226 } 10227 10228 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10229 uint8_t event [4]; 10230 uint16_t pos = 0; 10231 event[pos++] = HCI_EVENT_META_GAP; 10232 event[pos++] = 2; 10233 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10234 event[pos++] = big_handle; 10235 hci_emit_event(event, pos, 0); 10236 } 10237 10238 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10239 uint8_t event[6]; 10240 uint16_t pos = 0; 10241 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10242 event[pos++] = sizeof(event) - 2; 10243 event[pos++] = big->big_handle; 10244 event[pos++] = bis_index; 10245 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10246 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10247 } 10248 10249 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10250 uint8_t event[4]; 10251 uint16_t pos = 0; 10252 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10253 event[pos++] = sizeof(event) - 2; 10254 little_endian_store_16(event, pos, cis_con_handle); 10255 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10256 } 10257 10258 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10259 btstack_linked_list_iterator_t it; 10260 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10261 while (btstack_linked_list_iterator_has_next(&it)){ 10262 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10263 if ( big->big_handle == big_handle ) { 10264 return big; 10265 } 10266 } 10267 return NULL; 10268 } 10269 10270 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10271 btstack_linked_list_iterator_t it; 10272 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10273 while (btstack_linked_list_iterator_has_next(&it)){ 10274 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10275 if ( big_sync->big_handle == big_handle ) { 10276 return big_sync; 10277 } 10278 } 10279 return NULL; 10280 } 10281 10282 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10283 hci_stack->iso_packets_to_queue = num_packets; 10284 } 10285 10286 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10287 btstack_linked_list_iterator_t it; 10288 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10289 while (btstack_linked_list_iterator_has_next(&it)){ 10290 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10291 if ( cig->cig_id == cig_id ) { 10292 return cig; 10293 } 10294 } 10295 return NULL; 10296 } 10297 10298 static void hci_iso_notify_can_send_now(void){ 10299 10300 // BIG 10301 10302 btstack_linked_list_iterator_t it; 10303 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10304 while (btstack_linked_list_iterator_has_next(&it)){ 10305 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10306 // track number completed packet timestamps 10307 if (big->num_completed_timestamp_current_valid){ 10308 big->num_completed_timestamp_current_valid = false; 10309 if (big->num_completed_timestamp_previous_valid){ 10310 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10311 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10312 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10313 big->num_completed_timestamp_previous_ms); 10314 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10315 // to catch up, skip packet on all BIS 10316 uint8_t i; 10317 for (i=0;i<big->num_bis;i++){ 10318 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10319 if (iso_stream){ 10320 iso_stream->num_packets_to_skip++; 10321 } 10322 } 10323 } 10324 } 10325 big->num_completed_timestamp_previous_valid = true; 10326 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10327 } 10328 10329 if (big->can_send_now_requested){ 10330 // check if no outgoing iso packets pending and no can send now have to be emitted 10331 uint8_t i; 10332 bool can_send = true; 10333 uint8_t num_iso_queued_minimum = 0; 10334 for (i=0;i<big->num_bis;i++){ 10335 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10336 if (iso_stream == NULL) continue; 10337 // handle case where individual ISO packet was sent too late: 10338 // for each additionally queued packet, a new one needs to get skipped 10339 if (i==0){ 10340 num_iso_queued_minimum = iso_stream->num_packets_sent; 10341 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10342 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10343 iso_stream->num_packets_to_skip += num_packets_to_skip; 10344 iso_stream->num_packets_sent -= num_packets_to_skip; 10345 } 10346 // check if we can send now 10347 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10348 can_send = false; 10349 break; 10350 } 10351 } 10352 if (can_send){ 10353 // propagate can send now to individual streams 10354 big->can_send_now_requested = false; 10355 for (i=0;i<big->num_bis;i++){ 10356 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10357 iso_stream->emit_ready_to_send = true; 10358 } 10359 } 10360 } 10361 } 10362 10363 if (hci_stack->hci_packet_buffer_reserved) return; 10364 10365 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10366 while (btstack_linked_list_iterator_has_next(&it)){ 10367 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10368 // report bis ready 10369 uint8_t i; 10370 for (i=0;i<big->num_bis;i++){ 10371 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10372 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10373 iso_stream->emit_ready_to_send = false; 10374 hci_emit_bis_can_send_now(big, i); 10375 break; 10376 } 10377 } 10378 } 10379 10380 // CIS 10381 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10382 while (btstack_linked_list_iterator_has_next(&it)) { 10383 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10384 if ((iso_stream->can_send_now_requested) && 10385 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10386 iso_stream->can_send_now_requested = false; 10387 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10388 } 10389 } 10390 } 10391 10392 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10393 // make big handle unique and usuable for big and big sync 10394 if (hci_big_for_handle(big_handle) != NULL){ 10395 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10396 } 10397 if (hci_big_sync_for_handle(big_handle) != NULL){ 10398 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10399 } 10400 if (num_bis == 0){ 10401 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10402 } 10403 if (num_bis > MAX_NR_BIS){ 10404 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10405 } 10406 10407 // reserve ISO Streams 10408 uint8_t i; 10409 uint8_t status = ERROR_CODE_SUCCESS; 10410 for (i=0;i<num_bis;i++){ 10411 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10412 if (iso_stream == NULL) { 10413 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10414 break; 10415 } 10416 } 10417 10418 // free structs on error 10419 if (status != ERROR_CODE_SUCCESS){ 10420 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10421 } 10422 10423 return status; 10424 } 10425 10426 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10427 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10428 if (status != ERROR_CODE_SUCCESS){ 10429 return status; 10430 } 10431 10432 le_audio_big_t * big = storage; 10433 big->big_handle = big_params->big_handle; 10434 big->params = big_params; 10435 big->state = LE_AUDIO_BIG_STATE_CREATE; 10436 big->num_bis = big_params->num_bis; 10437 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10438 10439 hci_run(); 10440 10441 return ERROR_CODE_SUCCESS; 10442 } 10443 10444 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10445 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10446 if (status != ERROR_CODE_SUCCESS){ 10447 return status; 10448 } 10449 10450 le_audio_big_sync_t * big_sync = storage; 10451 big_sync->big_handle = big_sync_params->big_handle; 10452 big_sync->params = big_sync_params; 10453 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10454 big_sync->num_bis = big_sync_params->num_bis; 10455 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10456 10457 hci_run(); 10458 10459 return ERROR_CODE_SUCCESS; 10460 } 10461 10462 uint8_t gap_big_terminate(uint8_t big_handle){ 10463 le_audio_big_t * big = hci_big_for_handle(big_handle); 10464 if (big == NULL){ 10465 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10466 } 10467 switch (big->state){ 10468 case LE_AUDIO_BIG_STATE_CREATE: 10469 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10470 hci_emit_big_terminated(big); 10471 break; 10472 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10473 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10474 break; 10475 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10476 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10477 case LE_AUDIO_BIG_STATE_ACTIVE: 10478 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10479 hci_run(); 10480 break; 10481 default: 10482 return ERROR_CODE_COMMAND_DISALLOWED; 10483 } 10484 return ERROR_CODE_SUCCESS; 10485 } 10486 10487 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10488 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10489 if (big_sync == NULL){ 10490 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10491 } 10492 switch (big_sync->state){ 10493 case LE_AUDIO_BIG_STATE_CREATE: 10494 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10495 hci_emit_big_sync_stopped(big_handle); 10496 break; 10497 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10498 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10499 break; 10500 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10501 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10502 case LE_AUDIO_BIG_STATE_ACTIVE: 10503 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10504 hci_run(); 10505 break; 10506 default: 10507 return ERROR_CODE_COMMAND_DISALLOWED; 10508 } 10509 return ERROR_CODE_SUCCESS; 10510 } 10511 10512 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10513 le_audio_big_t * big = hci_big_for_handle(big_handle); 10514 if (big == NULL){ 10515 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10516 } 10517 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10518 return ERROR_CODE_COMMAND_DISALLOWED; 10519 } 10520 big->can_send_now_requested = true; 10521 hci_iso_notify_can_send_now(); 10522 return ERROR_CODE_SUCCESS; 10523 } 10524 10525 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10526 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10527 if (iso_stream == NULL){ 10528 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10529 } 10530 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10531 return ERROR_CODE_COMMAND_DISALLOWED; 10532 } 10533 iso_stream->can_send_now_requested = true; 10534 hci_iso_notify_can_send_now(); 10535 return ERROR_CODE_SUCCESS; 10536 } 10537 10538 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10539 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10540 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10541 } 10542 if (cig_params->num_cis == 0){ 10543 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10544 } 10545 if (cig_params->num_cis > MAX_NR_CIS){ 10546 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10547 } 10548 10549 // reserve ISO Streams 10550 uint8_t i; 10551 uint8_t status = ERROR_CODE_SUCCESS; 10552 for (i=0;i<cig_params->num_cis;i++){ 10553 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10554 if (iso_stream == NULL) { 10555 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10556 break; 10557 } 10558 } 10559 10560 // free structs on error 10561 if (status != ERROR_CODE_SUCCESS){ 10562 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10563 return status; 10564 } 10565 10566 le_audio_cig_t * cig = storage; 10567 cig->cig_id = cig_params->cig_id; 10568 cig->num_cis = cig_params->num_cis; 10569 cig->params = cig_params; 10570 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10571 for (i=0;i<cig->num_cis;i++){ 10572 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10573 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10574 cig->cis_setup_active[i] = false; 10575 cig->cis_established[i] = false; 10576 } 10577 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10578 10579 hci_run(); 10580 10581 return ERROR_CODE_SUCCESS; 10582 } 10583 10584 uint8_t gap_cig_remove(uint8_t cig_id){ 10585 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10586 if (cig == NULL){ 10587 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10588 } 10589 10590 // close active CIS 10591 uint8_t i; 10592 for (i=0;i<cig->num_cis;i++){ 10593 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10594 if (stream != NULL){ 10595 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10596 } 10597 } 10598 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10599 10600 hci_run(); 10601 10602 return ERROR_CODE_SUCCESS; 10603 } 10604 10605 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10606 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10607 if (cig == NULL){ 10608 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10609 } 10610 10611 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10612 return ERROR_CODE_COMMAND_DISALLOWED; 10613 } 10614 10615 // store ACL Connection Handles 10616 uint8_t i; 10617 for (i=0;i<cig->num_cis;i++){ 10618 // check that all con handles exist and store 10619 hci_con_handle_t cis_handle = cis_con_handles[i]; 10620 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10621 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10622 } 10623 uint8_t j; 10624 bool found = false; 10625 for (j=0;j<cig->num_cis;j++){ 10626 if (cig->cis_con_handles[j] == cis_handle){ 10627 cig->acl_con_handles[j] = acl_con_handles[j]; 10628 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10629 btstack_assert(iso_stream != NULL); 10630 iso_stream->acl_handle = acl_con_handles[j]; 10631 found = true; 10632 break; 10633 } 10634 } 10635 if (!found){ 10636 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10637 } 10638 } 10639 10640 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10641 hci_run(); 10642 10643 return ERROR_CODE_SUCCESS; 10644 } 10645 10646 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10647 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10648 if (iso_stream == NULL){ 10649 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10650 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10651 } 10652 10653 // set next state and continue 10654 iso_stream->state = state; 10655 hci_run(); 10656 return ERROR_CODE_SUCCESS; 10657 } 10658 10659 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10660 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10661 } 10662 10663 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10664 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10665 } 10666 10667 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10668 10669 // GAP Privacy - notify clients before random address update 10670 10671 static bool gap_privacy_client_all_ready(void){ 10672 // check if all ready 10673 btstack_linked_list_iterator_t it; 10674 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10675 while (btstack_linked_list_iterator_has_next(&it)) { 10676 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10677 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10678 return false; 10679 } 10680 } 10681 return true; 10682 } 10683 10684 static void gap_privacy_clients_handle_ready(void){ 10685 // clear 'ready' 10686 btstack_linked_list_iterator_t it; 10687 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10688 while (btstack_linked_list_iterator_has_next(&it)) { 10689 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10690 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10691 } 10692 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10693 hci_run(); 10694 } 10695 10696 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10697 btstack_linked_list_iterator_t it; 10698 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10699 while (btstack_linked_list_iterator_has_next(&it)) { 10700 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10701 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10702 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10703 (*client->callback)(client, new_random_address); 10704 } 10705 } 10706 if (gap_privacy_client_all_ready()){ 10707 gap_privacy_clients_handle_ready(); 10708 } 10709 } 10710 10711 void gap_privacy_client_register(gap_privacy_client_t * client){ 10712 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10713 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10714 } 10715 10716 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10717 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10718 if (gap_privacy_client_all_ready()){ 10719 gap_privacy_clients_handle_ready(); 10720 } 10721 } 10722 10723 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10724 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10725 } 10726 10727 #endif /* ENABLE_BLE */ 10728 10729 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10730 void hci_setup_test_connections_fuzz(void){ 10731 hci_connection_t * conn; 10732 10733 // default address: 66:55:44:33:00:01 10734 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10735 10736 // setup Controller info 10737 hci_stack->num_cmd_packets = 255; 10738 hci_stack->acl_packets_total_num = 255; 10739 10740 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10741 addr[5] = 0x01; 10742 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10743 conn->con_handle = addr[5]; 10744 conn->state = RECEIVED_CONNECTION_REQUEST; 10745 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10746 10747 // setup incoming Classic SCO connection with con handle 0x0002 10748 addr[5] = 0x02; 10749 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10750 conn->con_handle = addr[5]; 10751 conn->state = RECEIVED_CONNECTION_REQUEST; 10752 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10753 10754 // setup ready Classic ACL connection with con handle 0x0003 10755 addr[5] = 0x03; 10756 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10757 conn->con_handle = addr[5]; 10758 conn->state = OPEN; 10759 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10760 10761 // setup ready Classic SCO connection with con handle 0x0004 10762 addr[5] = 0x04; 10763 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10764 conn->con_handle = addr[5]; 10765 conn->state = OPEN; 10766 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10767 10768 // setup ready LE ACL connection with con handle 0x005 and public address 10769 addr[5] = 0x05; 10770 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10771 conn->con_handle = addr[5]; 10772 conn->state = OPEN; 10773 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10774 conn->sm_connection.sm_connection_encrypted = 1; 10775 } 10776 10777 void hci_free_connections_fuzz(void){ 10778 btstack_linked_list_iterator_t it; 10779 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10780 while (btstack_linked_list_iterator_has_next(&it)){ 10781 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10782 btstack_linked_list_iterator_remove(&it); 10783 btstack_memory_hci_connection_free(con); 10784 } 10785 } 10786 void hci_simulate_working_fuzz(void){ 10787 hci_stack->le_scanning_param_update = false; 10788 hci_init_done(); 10789 hci_stack->num_cmd_packets = 255; 10790 } 10791 #endif 10792