1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 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); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 308 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 309 conn->le_past_advertising_handle = 0xff; 310 #endif 311 } 312 313 /** 314 * create connection for given address 315 * 316 * @return connection OR NULL, if no memory left 317 */ 318 static hci_connection_t * 319 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 320 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 321 322 hci_connection_t * conn = btstack_memory_hci_connection_get(); 323 if (!conn) return NULL; 324 hci_connection_init(conn); 325 326 bd_addr_copy(conn->address, addr); 327 conn->address_type = addr_type; 328 conn->con_handle = HCI_CON_HANDLE_INVALID; 329 conn->role = role; 330 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 331 332 return conn; 333 } 334 335 336 /** 337 * get le connection parameter range 338 * 339 * @return le connection parameter range struct 340 */ 341 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 342 *range = hci_stack->le_connection_parameter_range; 343 } 344 345 /** 346 * set le connection parameter range 347 * 348 */ 349 350 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 351 hci_stack->le_connection_parameter_range = *range; 352 } 353 354 /** 355 * @brief Test if connection parameters are inside in existing rage 356 * @param conn_interval_min (unit: 1.25ms) 357 * @param conn_interval_max (unit: 1.25ms) 358 * @param conn_latency 359 * @param supervision_timeout (unit: 10ms) 360 * @return 1 if included 361 */ 362 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){ 363 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 364 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 365 366 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 367 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 368 369 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 370 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 371 372 return 1; 373 } 374 375 /** 376 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 377 * @note: default: 1 378 * @param max_peripheral_connections 379 */ 380 #ifdef ENABLE_LE_PERIPHERAL 381 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 382 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 383 } 384 #endif 385 386 /** 387 * get hci connections iterator 388 * 389 * @return hci connections iterator 390 */ 391 392 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 393 btstack_linked_list_iterator_init(it, &hci_stack->connections); 394 } 395 396 /** 397 * get connection for a given handle 398 * 399 * @return connection OR NULL, if not found 400 */ 401 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 402 btstack_linked_list_iterator_t it; 403 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 404 while (btstack_linked_list_iterator_has_next(&it)){ 405 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 406 if ( item->con_handle == con_handle ) { 407 return item; 408 } 409 } 410 return NULL; 411 } 412 413 /** 414 * get connection for given address 415 * 416 * @return connection OR NULL, if not found 417 */ 418 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 419 btstack_linked_list_iterator_t it; 420 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 421 while (btstack_linked_list_iterator_has_next(&it)){ 422 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 423 if (connection->address_type != addr_type) continue; 424 if (memcmp(addr, connection->address, 6) != 0) continue; 425 return connection; 426 } 427 return NULL; 428 } 429 430 #ifdef ENABLE_CLASSIC 431 432 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 433 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 434 } 435 436 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 437 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 438 } 439 440 #ifdef ENABLE_SCO_OVER_HCI 441 static int hci_number_sco_connections(void){ 442 int connections = 0; 443 btstack_linked_list_iterator_t it; 444 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 445 while (btstack_linked_list_iterator_has_next(&it)){ 446 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 447 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 448 connections++; 449 } 450 return connections; 451 } 452 #endif 453 454 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 455 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 456 #ifdef HAVE_EMBEDDED_TICK 457 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 458 // connections might be timed out 459 hci_emit_l2cap_check_timeout(connection); 460 } 461 #else 462 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 463 // connections might be timed out 464 hci_emit_l2cap_check_timeout(connection); 465 } 466 #endif 467 } 468 469 static void hci_connection_timestamp(hci_connection_t *connection){ 470 #ifdef HAVE_EMBEDDED_TICK 471 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 472 #else 473 connection->timestamp = btstack_run_loop_get_time_ms(); 474 #endif 475 } 476 477 /** 478 * add authentication flags and reset timer 479 * @note: assumes classic connection 480 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 481 */ 482 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 483 bd_addr_t addr; 484 reverse_bd_addr(bd_addr, addr); 485 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 486 if (conn) { 487 connectionSetAuthenticationFlags(conn, flags); 488 hci_connection_timestamp(conn); 489 } 490 } 491 492 static bool hci_pairing_active(hci_connection_t * hci_connection){ 493 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 494 } 495 496 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 497 if (hci_pairing_active(hci_connection)) return; 498 if (ssp){ 499 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 500 } else { 501 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 502 } 503 // if we are initiator, we have sent an HCI Authenticate Request 504 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 505 506 // if we are responder, use minimal service security level as required level 507 if (!initiator){ 508 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); 509 } 510 511 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 512 513 uint8_t event[12]; 514 event[0] = GAP_EVENT_PAIRING_STARTED; 515 event[1] = 10; 516 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 517 reverse_bd_addr(hci_connection->address, &event[4]); 518 event[10] = (uint8_t) ssp; 519 event[11] = (uint8_t) initiator; 520 hci_emit_event(event, sizeof(event), 1); 521 } 522 523 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 524 hci_connection->requested_security_level = LEVEL_0; 525 if (!hci_pairing_active(hci_connection)) return; 526 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 527 #ifdef ENABLE_CLASSIC_PAIRING_OOB 528 hci_connection->classic_oob_c_192 = NULL; 529 hci_connection->classic_oob_r_192 = NULL; 530 hci_connection->classic_oob_c_256 = NULL; 531 hci_connection->classic_oob_r_256 = NULL; 532 #endif 533 log_info("pairing complete, status %02x", status); 534 535 uint8_t event[11]; 536 event[0] = GAP_EVENT_PAIRING_COMPLETE; 537 event[1] = 9; 538 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 539 reverse_bd_addr(hci_connection->address, &event[4]); 540 event[10] = status; 541 hci_emit_event(event, sizeof(event), 1); 542 543 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 544 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 545 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 546 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 547 hci_connection->bonding_status = status; 548 } 549 } 550 551 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 552 hci_connection_t * conn = hci_connection_for_handle(handle); 553 if (!conn) return false; 554 return hci_pairing_active(conn); 555 } 556 557 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 558 if (!hci_stack->link_key_db) return; 559 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 560 hci_stack->link_key_db->delete_link_key(addr); 561 } 562 563 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 566 hci_stack->link_key_db->put_link_key(addr, link_key, type); 567 } 568 569 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 570 if (!hci_stack->link_key_db) return false; 571 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 572 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 573 return result; 574 } 575 576 void gap_delete_all_link_keys(void){ 577 bd_addr_t addr; 578 link_key_t link_key; 579 link_key_type_t type; 580 btstack_link_key_iterator_t it; 581 int ok = gap_link_key_iterator_init(&it); 582 if (!ok) { 583 log_error("could not initialize iterator"); 584 return; 585 } 586 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 587 gap_drop_link_key_for_bd_addr(addr); 588 } 589 gap_link_key_iterator_done(&it); 590 } 591 592 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 593 if (!hci_stack->link_key_db) return 0; 594 if (!hci_stack->link_key_db->iterator_init) return 0; 595 return hci_stack->link_key_db->iterator_init(it); 596 } 597 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){ 598 if (!hci_stack->link_key_db) return 0; 599 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 600 } 601 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 602 if (!hci_stack->link_key_db) return; 603 hci_stack->link_key_db->iterator_done(it); 604 } 605 #endif 606 607 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 608 switch (address_type){ 609 case BD_ADDR_TYPE_LE_PUBLIC: 610 case BD_ADDR_TYPE_LE_RANDOM: 611 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 612 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 613 return true; 614 default: 615 return false; 616 } 617 } 618 619 static bool hci_is_le_connection(hci_connection_t * connection){ 620 return hci_is_le_connection_type(connection->address_type); 621 } 622 623 /** 624 * count connections 625 */ 626 static int nr_hci_connections(void){ 627 int count = 0; 628 btstack_linked_item_t *it; 629 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 630 count++; 631 } 632 return count; 633 } 634 635 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 636 637 unsigned int num_packets_sent_classic = 0; 638 unsigned int num_packets_sent_le = 0; 639 640 btstack_linked_item_t *it; 641 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 642 hci_connection_t * connection = (hci_connection_t *) it; 643 if (hci_is_le_connection(connection)){ 644 num_packets_sent_le += connection->num_packets_sent; 645 } 646 if (connection->address_type == BD_ADDR_TYPE_ACL){ 647 num_packets_sent_classic += connection->num_packets_sent; 648 } 649 } 650 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 651 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 652 int free_slots_le = 0; 653 654 if (free_slots_classic < 0){ 655 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); 656 return 0; 657 } 658 659 if (hci_stack->le_acl_packets_total_num){ 660 // if we have LE slots, they are used 661 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 662 if (free_slots_le < 0){ 663 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); 664 return 0; 665 } 666 } else { 667 // otherwise, classic slots are used for LE, too 668 free_slots_classic -= num_packets_sent_le; 669 if (free_slots_classic < 0){ 670 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); 671 return 0; 672 } 673 } 674 675 switch (address_type){ 676 case BD_ADDR_TYPE_UNKNOWN: 677 log_error("hci_number_free_acl_slots: unknown address type"); 678 return 0; 679 680 case BD_ADDR_TYPE_ACL: 681 return (uint16_t) free_slots_classic; 682 683 default: 684 if (hci_stack->le_acl_packets_total_num > 0){ 685 return (uint16_t) free_slots_le; 686 } 687 return (uint16_t) free_slots_classic; 688 } 689 } 690 691 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 692 // get connection type 693 hci_connection_t * connection = hci_connection_for_handle(con_handle); 694 if (!connection){ 695 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 696 return 0; 697 } 698 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 699 } 700 701 #ifdef ENABLE_CLASSIC 702 static int hci_number_free_sco_slots(void){ 703 unsigned int num_sco_packets_sent = 0; 704 btstack_linked_item_t *it; 705 if (hci_stack->synchronous_flow_control_enabled){ 706 // explicit flow control 707 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 708 hci_connection_t * connection = (hci_connection_t *) it; 709 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 710 num_sco_packets_sent += connection->num_packets_sent; 711 } 712 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 713 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 714 return 0; 715 } 716 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 717 } else { 718 // implicit flow control 719 int num_ready = 0; 720 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 721 hci_connection_t * connection = (hci_connection_t *) it; 722 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 723 if (connection->sco_tx_ready == 0) continue; 724 num_ready++; 725 } 726 return num_ready; 727 } 728 } 729 #endif 730 731 // only used to send HCI Host Number Completed Packets 732 static int hci_can_send_comand_packet_transport(void){ 733 if (hci_stack->hci_packet_buffer_reserved) return 0; 734 735 // check for async hci transport implementations 736 if (hci_stack->hci_transport->can_send_packet_now){ 737 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 738 return 0; 739 } 740 } 741 return 1; 742 } 743 744 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 745 bool hci_can_send_command_packet_now(void){ 746 if (hci_can_send_comand_packet_transport() == 0) return false; 747 return hci_stack->num_cmd_packets > 0u; 748 } 749 750 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 751 // check for async hci transport implementations 752 if (!hci_stack->hci_transport->can_send_packet_now) return true; 753 return hci_stack->hci_transport->can_send_packet_now(packet_type); 754 } 755 756 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 757 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 758 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 759 } 760 761 bool hci_can_send_acl_le_packet_now(void){ 762 if (hci_stack->hci_packet_buffer_reserved) return false; 763 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 764 } 765 766 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 767 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 768 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 769 } 770 771 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 772 if (hci_stack->hci_packet_buffer_reserved) return false; 773 return hci_can_send_prepared_acl_packet_now(con_handle); 774 } 775 776 #ifdef ENABLE_CLASSIC 777 bool hci_can_send_acl_classic_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 780 } 781 782 bool hci_can_send_prepared_sco_packet_now(void){ 783 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 784 if (hci_have_usb_transport()){ 785 return hci_stack->sco_can_send_now; 786 } else { 787 return hci_number_free_sco_slots() > 0; 788 } 789 } 790 791 bool hci_can_send_sco_packet_now(void){ 792 if (hci_stack->hci_packet_buffer_reserved) return false; 793 return hci_can_send_prepared_sco_packet_now(); 794 } 795 796 void hci_request_sco_can_send_now_event(void){ 797 hci_stack->sco_waiting_for_can_send_now = 1; 798 hci_notify_if_sco_can_send_now(); 799 } 800 #endif 801 802 // used for internal checks in l2cap.c 803 bool hci_is_packet_buffer_reserved(void){ 804 return hci_stack->hci_packet_buffer_reserved; 805 } 806 807 // reserves outgoing packet buffer. 808 // @return 1 if successful 809 bool hci_reserve_packet_buffer(void){ 810 if (hci_stack->hci_packet_buffer_reserved) { 811 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 812 return false; 813 } 814 hci_stack->hci_packet_buffer_reserved = true; 815 return true; 816 } 817 818 void hci_release_packet_buffer(void){ 819 hci_stack->hci_packet_buffer_reserved = false; 820 } 821 822 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 823 static int hci_transport_synchronous(void){ 824 return hci_stack->hci_transport->can_send_packet_now == NULL; 825 } 826 827 // used for debugging 828 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 829 static void hci_controller_dump_packets(void){ 830 // format: "{handle:04x}:{count:02d} " 831 char summaries[3][7 * 8 + 1]; 832 uint16_t totals[3]; 833 uint8_t index; 834 for (index = 0 ; index < 3 ; index++){ 835 summaries[index][0] = 0; 836 totals[index] = 0; 837 } 838 btstack_linked_item_t *it; 839 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 840 hci_connection_t * connection = (hci_connection_t *) it; 841 switch (connection->address_type){ 842 case BD_ADDR_TYPE_ACL: 843 index = 0; 844 break; 845 case BD_ADDR_TYPE_SCO: 846 index = 2; 847 break; 848 default: 849 index = 1; 850 break; 851 } 852 totals[index] += connection->num_packets_sent; 853 char item_text[10]; 854 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 855 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 856 } 857 for (index = 0 ; index < 3 ; index++){ 858 if (summaries[index][0] == 0){ 859 summaries[index][0] = '-'; 860 summaries[index][1] = 0; 861 } 862 } 863 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]); 864 } 865 #endif 866 867 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 868 869 // 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); 870 871 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 872 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 873 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 874 max_acl_data_packet_length = hci_stack->le_data_packets_length; 875 } 876 877 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 878 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 879 max_acl_data_packet_length = connection->le_max_tx_octets; 880 } 881 #endif 882 883 log_debug("hci_send_acl_packet_fragments entered"); 884 885 uint8_t status = ERROR_CODE_SUCCESS; 886 // multiple packets could be send on a synchronous HCI transport 887 while (true){ 888 889 log_debug("hci_send_acl_packet_fragments loop entered"); 890 891 // get current data 892 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 893 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 894 bool more_fragments = false; 895 896 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 897 if (current_acl_data_packet_length > max_acl_data_packet_length){ 898 more_fragments = true; 899 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 900 } 901 902 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 903 if (acl_header_pos > 0u){ 904 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 905 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 906 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 907 } 908 909 // update header len 910 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 911 912 // count packet 913 connection->num_packets_sent++; 914 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 915 916 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 917 if (more_fragments){ 918 // update start of next fragment to send 919 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 920 } else { 921 // done 922 hci_stack->acl_fragmentation_pos = 0; 923 hci_stack->acl_fragmentation_total_size = 0; 924 } 925 926 // send packet 927 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 928 const int size = current_acl_data_packet_length + 4; 929 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 930 hci_stack->acl_fragmentation_tx_active = 1; 931 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 932 if (err != 0){ 933 // no error from HCI Transport expected 934 status = ERROR_CODE_HARDWARE_FAILURE; 935 } 936 937 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 938 hci_controller_dump_packets(); 939 #endif 940 941 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 942 943 // done yet? 944 if (!more_fragments) break; 945 946 // can send more? 947 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 948 } 949 950 log_debug("hci_send_acl_packet_fragments loop over"); 951 952 // release buffer now for synchronous transport 953 if (hci_transport_synchronous()){ 954 hci_stack->acl_fragmentation_tx_active = 0; 955 hci_release_packet_buffer(); 956 hci_emit_transport_packet_sent(); 957 } 958 959 return status; 960 } 961 962 // pre: caller has reserved the packet buffer 963 uint8_t hci_send_acl_packet_buffer(int size){ 964 btstack_assert(hci_stack->hci_packet_buffer_reserved); 965 966 uint8_t * packet = hci_stack->hci_packet_buffer; 967 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 968 969 hci_connection_t *connection = hci_connection_for_handle( con_handle); 970 if (!connection) { 971 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 972 hci_release_packet_buffer(); 973 hci_emit_transport_packet_sent(); 974 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 975 } 976 977 // check for free places on Bluetooth module 978 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 979 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 980 hci_release_packet_buffer(); 981 hci_emit_transport_packet_sent(); 982 return BTSTACK_ACL_BUFFERS_FULL; 983 } 984 985 #ifdef ENABLE_CLASSIC 986 hci_connection_timestamp(connection); 987 #endif 988 989 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 990 991 // setup data 992 hci_stack->acl_fragmentation_total_size = size; 993 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 994 995 return hci_send_acl_packet_fragments(connection); 996 } 997 998 #ifdef ENABLE_CLASSIC 999 // pre: caller has reserved the packet buffer 1000 uint8_t hci_send_sco_packet_buffer(int size){ 1001 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1002 1003 uint8_t * packet = hci_stack->hci_packet_buffer; 1004 1005 // skip checks in loopback mode 1006 if (!hci_stack->loopback_mode){ 1007 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1008 1009 // check for free places on Bluetooth module 1010 if (!hci_can_send_prepared_sco_packet_now()) { 1011 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1012 hci_release_packet_buffer(); 1013 hci_emit_transport_packet_sent(); 1014 return BTSTACK_ACL_BUFFERS_FULL; 1015 } 1016 1017 // track send packet in connection struct 1018 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1019 if (!connection) { 1020 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1021 hci_release_packet_buffer(); 1022 hci_emit_transport_packet_sent(); 1023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1024 } 1025 1026 if (hci_have_usb_transport()){ 1027 // token used 1028 hci_stack->sco_can_send_now = false; 1029 } else { 1030 if (hci_stack->synchronous_flow_control_enabled){ 1031 connection->num_packets_sent++; 1032 } else { 1033 connection->sco_tx_ready--; 1034 } 1035 } 1036 } 1037 1038 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1039 1040 #ifdef HAVE_SCO_TRANSPORT 1041 hci_stack->sco_transport->send_packet(packet, size); 1042 hci_release_packet_buffer(); 1043 hci_emit_transport_packet_sent(); 1044 1045 return 0; 1046 #else 1047 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1048 if (hci_transport_synchronous()){ 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 } 1052 1053 if (err != 0){ 1054 return ERROR_CODE_HARDWARE_FAILURE; 1055 } 1056 return ERROR_CODE_SUCCESS; 1057 #endif 1058 } 1059 #endif 1060 1061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1062 static uint8_t hci_send_iso_packet_fragments(void){ 1063 1064 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1065 uint8_t status = ERROR_CODE_SUCCESS; 1066 // multiple packets could be send on a synchronous HCI transport 1067 while (true){ 1068 1069 // get current data 1070 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1071 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1072 bool more_fragments = false; 1073 1074 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1075 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1076 more_fragments = true; 1077 current_iso_data_packet_length = max_iso_data_packet_length; 1078 } 1079 1080 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1081 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1082 uint8_t pb_flags; 1083 if (iso_header_pos == 0u){ 1084 // first fragment, keep TS field 1085 pb_flags = more_fragments ? 0x00 : 0x02; 1086 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1087 } else { 1088 // later fragment, drop TS field 1089 pb_flags = more_fragments ? 0x01 : 0x03; 1090 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1091 } 1092 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1093 1094 // update header len 1095 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1096 1097 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1098 if (more_fragments){ 1099 // update start of next fragment to send 1100 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1101 } else { 1102 // done 1103 hci_stack->iso_fragmentation_pos = 0; 1104 hci_stack->iso_fragmentation_total_size = 0; 1105 } 1106 1107 // send packet 1108 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1109 const int size = current_iso_data_packet_length + 4; 1110 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1111 hci_stack->iso_fragmentation_tx_active = true; 1112 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1113 if (err != 0){ 1114 // no error from HCI Transport expected 1115 status = ERROR_CODE_HARDWARE_FAILURE; 1116 } 1117 1118 // done yet? 1119 if (!more_fragments) break; 1120 1121 // can send more? 1122 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1123 } 1124 1125 // release buffer now for synchronous transport 1126 if (hci_transport_synchronous()){ 1127 hci_stack->iso_fragmentation_tx_active = false; 1128 hci_release_packet_buffer(); 1129 hci_emit_transport_packet_sent(); 1130 } 1131 1132 return status; 1133 } 1134 1135 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1136 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1137 1138 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1139 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1140 if (iso_stream == NULL){ 1141 hci_release_packet_buffer(); 1142 hci_iso_notify_can_send_now(); 1143 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1144 } 1145 1146 // TODO: check for space on controller 1147 1148 // skip iso packets if needed 1149 if (iso_stream->num_packets_to_skip > 0){ 1150 iso_stream->num_packets_to_skip--; 1151 // pretend it was processed and trigger next one 1152 hci_release_packet_buffer(); 1153 hci_iso_notify_can_send_now(); 1154 return ERROR_CODE_SUCCESS; 1155 } 1156 1157 // track outgoing packet sent 1158 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1159 iso_stream->num_packets_sent++; 1160 1161 // setup data 1162 hci_stack->iso_fragmentation_total_size = size; 1163 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1164 1165 return hci_send_iso_packet_fragments(); 1166 } 1167 #endif 1168 1169 static void acl_handler(uint8_t *packet, uint16_t size){ 1170 1171 // get info 1172 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1173 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1174 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1175 uint16_t acl_length = READ_ACL_LENGTH(packet); 1176 1177 // ignore non-registered handle 1178 if (!conn){ 1179 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1180 return; 1181 } 1182 1183 // assert packet is complete 1184 if ((acl_length + 4u) != size){ 1185 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1186 return; 1187 } 1188 1189 #ifdef ENABLE_CLASSIC 1190 // update idle timestamp 1191 hci_connection_timestamp(conn); 1192 #endif 1193 1194 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1195 hci_stack->host_completed_packets = 1; 1196 conn->num_packets_completed++; 1197 #endif 1198 1199 // handle different packet types 1200 switch (acl_flags & 0x03u) { 1201 1202 case 0x01: // continuation fragment 1203 1204 // sanity checks 1205 if (conn->acl_recombination_pos == 0u) { 1206 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1207 return; 1208 } 1209 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1210 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1211 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1212 conn->acl_recombination_pos = 0; 1213 return; 1214 } 1215 1216 // append fragment payload (header already stored) 1217 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1218 &packet[4], acl_length); 1219 conn->acl_recombination_pos += acl_length; 1220 1221 // forward complete L2CAP packet if complete. 1222 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1223 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1224 // reset recombination buffer 1225 conn->acl_recombination_length = 0; 1226 conn->acl_recombination_pos = 0; 1227 } 1228 break; 1229 1230 case 0x02: { // first fragment 1231 1232 // sanity check 1233 if (conn->acl_recombination_pos) { 1234 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1235 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1236 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1237 } 1238 conn->acl_recombination_pos = 0; 1239 } 1240 1241 // peek into L2CAP packet! 1242 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1243 1244 // compare fragment size to L2CAP packet size 1245 if (acl_length >= (l2cap_length + 4u)){ 1246 // forward fragment as L2CAP packet 1247 hci_emit_acl_packet(packet, acl_length + 4u); 1248 } else { 1249 1250 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1251 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1252 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1253 return; 1254 } 1255 1256 // store first fragment and tweak acl length for complete package 1257 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1258 packet, acl_length + 4u); 1259 conn->acl_recombination_pos = acl_length + 4u; 1260 conn->acl_recombination_length = l2cap_length; 1261 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1262 } 1263 break; 1264 1265 } 1266 default: 1267 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1268 return; 1269 } 1270 1271 // execute main loop 1272 hci_run(); 1273 } 1274 1275 static void hci_connection_stop_timer(hci_connection_t * conn){ 1276 btstack_run_loop_remove_timer(&conn->timeout); 1277 #ifdef ENABLE_CLASSIC 1278 btstack_run_loop_remove_timer(&conn->timeout_sco); 1279 #endif 1280 } 1281 1282 static void hci_shutdown_connection(hci_connection_t *conn){ 1283 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1284 1285 #ifdef ENABLE_CLASSIC 1286 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1287 bd_addr_type_t addr_type = conn->address_type; 1288 #endif 1289 #ifdef HAVE_SCO_TRANSPORT 1290 hci_con_handle_t con_handle = conn->con_handle; 1291 #endif 1292 #endif 1293 1294 hci_connection_stop_timer(conn); 1295 1296 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1297 btstack_memory_hci_connection_free( conn ); 1298 1299 // now it's gone 1300 hci_emit_nr_connections_changed(); 1301 1302 #ifdef ENABLE_CLASSIC 1303 #ifdef ENABLE_SCO_OVER_HCI 1304 // update SCO 1305 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1306 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1307 } 1308 #endif 1309 #ifdef HAVE_SCO_TRANSPORT 1310 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1311 hci_stack->sco_transport->close(con_handle); 1312 } 1313 #endif 1314 #endif 1315 } 1316 1317 #ifdef ENABLE_CLASSIC 1318 1319 static const uint16_t hci_acl_packet_type_sizes[] = { 1320 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1321 HCI_ACL_DH1_SIZE, 0, 0, 0, 1322 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1323 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1324 }; 1325 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1326 0, // 3 slot packets 1327 1, // 5 slot packets 1328 25, // EDR 2 mpbs 1329 26, // EDR 3 mbps 1330 39, // 3 slot EDR packts 1331 40, // 5 slot EDR packet 1332 }; 1333 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1334 0x0f00, // 3 slot packets 1335 0xf000, // 5 slot packets 1336 0x1102, // EDR 2 mpbs 1337 0x2204, // EDR 3 mbps 1338 0x0300, // 3 slot EDR packts 1339 0x3000, // 5 slot EDR packet 1340 }; 1341 1342 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1343 // enable packet types based on size 1344 uint16_t packet_types = 0; 1345 unsigned int i; 1346 for (i=0;i<16;i++){ 1347 if (hci_acl_packet_type_sizes[i] == 0) continue; 1348 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1349 packet_types |= 1 << i; 1350 } 1351 } 1352 // disable packet types due to missing local supported features 1353 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1354 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1355 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1356 if (feature_set) continue; 1357 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1358 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1359 } 1360 return packet_types; 1361 } 1362 1363 uint16_t hci_usable_acl_packet_types(void){ 1364 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1365 // flip bits for "may not be used" 1366 return active_packet_types ^ 0x3306; 1367 } 1368 1369 void hci_enable_acl_packet_types(uint16_t packet_types){ 1370 hci_stack->enabled_packet_types_acl = packet_types; 1371 } 1372 1373 static const struct { 1374 uint8_t feature_index; 1375 uint16_t feature_packet_mask; 1376 } hci_sco_packet_type_feature_requirements[] = { 1377 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1378 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1379 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1380 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1381 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1382 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1383 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1384 }; 1385 1386 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1387 static const struct { 1388 uint16_t type; 1389 uint16_t payload_length; 1390 } hci_sco_packet_type_to_payload_length[] = { 1391 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1392 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1393 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1394 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1395 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1396 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1397 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1398 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1399 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1400 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1401 }; 1402 1403 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1404 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1405 unsigned int i; 1406 // disable packet types due to missing local supported features 1407 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1408 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1409 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1410 if (feature_set) continue; 1411 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); 1412 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1413 } 1414 return packet_types; 1415 } 1416 1417 uint16_t hci_usable_sco_packet_types(void){ 1418 return hci_stack->usable_packet_types_sco; 1419 } 1420 1421 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1422 uint8_t i; 1423 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1424 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1425 return hci_sco_packet_type_to_payload_length[i].payload_length; 1426 } 1427 } 1428 return 0; 1429 } 1430 1431 #endif 1432 1433 uint8_t* hci_get_outgoing_packet_buffer(void){ 1434 // hci packet buffer is >= acl data packet length 1435 return hci_stack->hci_packet_buffer; 1436 } 1437 1438 uint16_t hci_max_acl_data_packet_length(void){ 1439 return hci_stack->acl_data_packet_length; 1440 } 1441 1442 #ifdef ENABLE_CLASSIC 1443 bool hci_extended_sco_link_supported(void){ 1444 // No. 31, byte 3, bit 7 1445 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1446 } 1447 #endif 1448 1449 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1450 // No. 54, byte 6, bit 6 1451 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1452 } 1453 1454 #ifdef ENABLE_CLASSIC 1455 static bool gap_ssp_supported(void){ 1456 // No. 51, byte 6, bit 3 1457 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1458 } 1459 #endif 1460 1461 bool hci_classic_supported(void){ 1462 #ifdef ENABLE_CLASSIC 1463 // No. 37, byte 4, bit 5, = No BR/EDR Support 1464 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1465 #else 1466 return false; 1467 #endif 1468 } 1469 1470 bool hci_le_supported(void){ 1471 #ifdef ENABLE_BLE 1472 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1473 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1474 #else 1475 return false; 1476 #endif 1477 } 1478 1479 static bool hci_command_supported(uint8_t command_index){ 1480 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1481 } 1482 1483 #ifdef ENABLE_BLE 1484 1485 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1486 static bool hci_extended_advertising_supported(void){ 1487 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1488 } 1489 #endif 1490 1491 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1492 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1493 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1494 } else { 1495 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1496 } 1497 } 1498 1499 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1500 *addr_type = hci_stack->le_own_addr_type; 1501 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1502 } 1503 1504 #ifdef ENABLE_LE_PERIPHERAL 1505 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1506 *addr_type = hci_stack->le_advertisements_own_addr_type; 1507 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1508 }; 1509 #endif 1510 1511 #ifdef ENABLE_LE_CENTRAL 1512 1513 /** 1514 * @brief Get own addr type and address used for LE connections (Central) 1515 */ 1516 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1517 *addr_type = hci_stack->le_connection_own_addr_type; 1518 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1519 } 1520 1521 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1522 1523 uint16_t offset = 3; 1524 uint8_t num_reports = packet[offset]; 1525 offset += 1; 1526 1527 uint16_t i; 1528 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1529 for (i=0; (i<num_reports) && (offset < size);i++){ 1530 // sanity checks on data_length: 1531 uint8_t data_length = packet[offset + 8]; 1532 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1533 if ((offset + 9u + data_length + 1u) > size) return; 1534 // setup event 1535 uint8_t event_size = 10u + data_length; 1536 uint16_t pos = 0; 1537 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1538 event[pos++] = event_size; 1539 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1540 offset += 8; 1541 pos += 8; 1542 event[pos++] = packet[offset + 1 + data_length]; // rssi 1543 event[pos++] = data_length; 1544 offset++; 1545 (void)memcpy(&event[pos], &packet[offset], data_length); 1546 pos += data_length; 1547 offset += data_length + 1u; // rssi 1548 hci_emit_event(event, pos, 1); 1549 } 1550 } 1551 1552 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1553 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1554 uint16_t offset = 3; 1555 uint8_t num_reports = packet[offset++]; 1556 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1557 uint8_t i; 1558 for (i=0; (i<num_reports) && (offset < size);i++){ 1559 // sanity checks on data_length: 1560 uint16_t data_length = packet[offset + 23]; 1561 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1562 if ((offset + 24u + data_length) > size) return; 1563 uint16_t event_type = little_endian_read_16(packet, offset); 1564 offset += 2; 1565 if ((event_type & 0x10) != 0) { 1566 // setup legacy event 1567 uint8_t legacy_event_type; 1568 switch (event_type){ 1569 case 0b0010011: 1570 // ADV_IND 1571 legacy_event_type = 0; 1572 break; 1573 case 0b0010101: 1574 // ADV_DIRECT_IND 1575 legacy_event_type = 1; 1576 break; 1577 case 0b0010010: 1578 // ADV_SCAN_IND 1579 legacy_event_type = 2; 1580 break; 1581 case 0b0010000: 1582 // ADV_NONCONN_IND 1583 legacy_event_type = 3; 1584 break; 1585 case 0b0011011: 1586 case 0b0011010: 1587 // SCAN_RSP 1588 legacy_event_type = 4; 1589 break; 1590 default: 1591 legacy_event_type = 0; 1592 break; 1593 } 1594 uint16_t pos = 0; 1595 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1596 event[pos++] = 10u + data_length; 1597 event[pos++] = legacy_event_type; 1598 // copy address type + address 1599 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1600 offset += 7; 1601 pos += 7; 1602 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1603 offset += 4; 1604 // copy rssi 1605 event[pos++] = packet[offset++]; 1606 // skip periodic advertising interval and direct address 1607 offset += 9; 1608 // copy data len + data; 1609 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1610 pos += 1 +data_length; 1611 offset += 1+ data_length; 1612 hci_emit_event(event, pos, 1); 1613 } else { 1614 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1615 uint8_t report_len = 24 + data_length; 1616 event[1] = report_len; 1617 little_endian_store_16(event, 2, event_type); 1618 memcpy(&event[4], &packet[offset], report_len); 1619 offset += report_len; 1620 hci_emit_event(event, 2 + report_len, 1); 1621 } 1622 } 1623 } 1624 #endif 1625 1626 #endif 1627 #endif 1628 1629 #ifdef ENABLE_BLE 1630 #ifdef ENABLE_LE_PERIPHERAL 1631 static void hci_update_advertisements_enabled_for_current_roles(void){ 1632 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1633 // get number of active le slave connections 1634 int num_slave_connections = 0; 1635 btstack_linked_list_iterator_t it; 1636 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1637 while (btstack_linked_list_iterator_has_next(&it)){ 1638 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1639 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1640 if (con->state != OPEN) continue; 1641 if (con->role != HCI_ROLE_SLAVE) continue; 1642 if (!hci_is_le_connection(con)) continue; 1643 num_slave_connections++; 1644 } 1645 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1646 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1647 } else { 1648 hci_stack->le_advertisements_enabled_for_current_roles = false; 1649 } 1650 } 1651 #endif 1652 #endif 1653 1654 #ifdef ENABLE_CLASSIC 1655 static void gap_run_set_local_name(void){ 1656 hci_reserve_packet_buffer(); 1657 uint8_t * packet = hci_stack->hci_packet_buffer; 1658 // construct HCI Command and send 1659 uint16_t opcode = hci_write_local_name.opcode; 1660 hci_stack->last_cmd_opcode = opcode; 1661 packet[0] = opcode & 0xff; 1662 packet[1] = opcode >> 8; 1663 packet[2] = DEVICE_NAME_LEN; 1664 memset(&packet[3], 0, DEVICE_NAME_LEN); 1665 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1666 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1667 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1668 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1669 // expand '00:00:00:00:00:00' in name with bd_addr 1670 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1671 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1672 } 1673 1674 static void gap_run_set_eir_data(void){ 1675 hci_reserve_packet_buffer(); 1676 uint8_t * packet = hci_stack->hci_packet_buffer; 1677 // construct HCI Command in-place and send 1678 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1679 hci_stack->last_cmd_opcode = opcode; 1680 uint16_t offset = 0; 1681 packet[offset++] = opcode & 0xff; 1682 packet[offset++] = opcode >> 8; 1683 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1684 packet[offset++] = 0; // FEC not required 1685 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1686 if (hci_stack->eir_data){ 1687 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1688 ad_context_t context; 1689 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1690 uint8_t data_type = ad_iterator_get_data_type(&context); 1691 uint8_t size = ad_iterator_get_data_len(&context); 1692 const uint8_t *data = ad_iterator_get_data(&context); 1693 // copy item 1694 packet[offset++] = size + 1; 1695 packet[offset++] = data_type; 1696 memcpy(&packet[offset], data, size); 1697 // update name item 1698 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1699 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1700 } 1701 offset += size; 1702 } 1703 } else { 1704 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1705 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1706 packet[offset++] = bytes_to_copy + 1; 1707 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1708 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1709 // expand '00:00:00:00:00:00' in name with bd_addr 1710 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1711 } 1712 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1713 } 1714 1715 static void hci_run_gap_tasks_classic(void){ 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1718 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1719 return; 1720 } 1721 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1722 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1723 gap_run_set_local_name(); 1724 return; 1725 } 1726 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1727 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1728 gap_run_set_eir_data(); 1729 return; 1730 } 1731 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1732 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1733 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1734 return; 1735 } 1736 // write page scan activity 1737 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1738 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1739 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1740 return; 1741 } 1742 // write page scan type 1743 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1744 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1745 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1746 return; 1747 } 1748 // write page timeout 1749 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1750 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1751 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1752 return; 1753 } 1754 // send scan enable 1755 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1756 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1757 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1758 return; 1759 } 1760 // send write scan activity 1761 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1762 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1763 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1764 return; 1765 } 1766 // send write inquiry transmit power level 1767 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1768 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1769 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1770 return; 1771 } 1772 } 1773 #endif 1774 1775 #ifndef HAVE_HOST_CONTROLLER_API 1776 1777 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1778 if (!hci_stack->config) return 0; 1779 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1780 // Limit baud rate for Broadcom chipsets to 3 mbps 1781 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1782 baud_rate = 3000000; 1783 } 1784 return baud_rate; 1785 } 1786 1787 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1788 UNUSED(ds); 1789 1790 switch (hci_stack->substate){ 1791 case HCI_INIT_W4_SEND_RESET: 1792 log_info("Resend HCI Reset"); 1793 hci_stack->substate = HCI_INIT_SEND_RESET; 1794 hci_stack->num_cmd_packets = 1; 1795 hci_run(); 1796 break; 1797 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1798 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1799 if (hci_stack->hci_transport->reset_link){ 1800 hci_stack->hci_transport->reset_link(); 1801 } 1802 1803 /* fall through */ 1804 1805 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1806 log_info("Resend HCI Reset - CSR Warm Boot"); 1807 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1808 hci_stack->num_cmd_packets = 1; 1809 hci_run(); 1810 break; 1811 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1812 if (hci_stack->hci_transport->set_baudrate){ 1813 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1814 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1815 hci_stack->hci_transport->set_baudrate(baud_rate); 1816 } 1817 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1818 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1819 if (hci_stack->hci_transport->reset_link){ 1820 log_info("Link Reset"); 1821 hci_stack->hci_transport->reset_link(); 1822 } 1823 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1824 hci_run(); 1825 } 1826 break; 1827 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1828 // otherwise continue 1829 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1830 hci_send_cmd(&hci_read_local_supported_commands); 1831 break; 1832 default: 1833 break; 1834 } 1835 } 1836 #endif 1837 1838 static void hci_initializing_next_state(void){ 1839 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1840 } 1841 1842 static void hci_init_done(void){ 1843 // done. tell the app 1844 log_info("hci_init_done -> HCI_STATE_WORKING"); 1845 hci_stack->state = HCI_STATE_WORKING; 1846 hci_emit_state(); 1847 } 1848 1849 // assumption: hci_can_send_command_packet_now() == true 1850 static void hci_initializing_run(void){ 1851 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1852 1853 if (!hci_can_send_command_packet_now()) return; 1854 1855 #ifndef HAVE_HOST_CONTROLLER_API 1856 bool need_baud_change = hci_stack->config 1857 && hci_stack->chipset 1858 && hci_stack->chipset->set_baudrate_command 1859 && hci_stack->hci_transport->set_baudrate 1860 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1861 #endif 1862 1863 switch (hci_stack->substate){ 1864 case HCI_INIT_SEND_RESET: 1865 hci_state_reset(); 1866 1867 #ifndef HAVE_HOST_CONTROLLER_API 1868 // prepare reset if command complete not received in 100ms 1869 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1870 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1871 btstack_run_loop_add_timer(&hci_stack->timeout); 1872 #endif 1873 // send command 1874 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1875 hci_send_cmd(&hci_reset); 1876 break; 1877 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1878 hci_send_cmd(&hci_read_local_version_information); 1879 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1880 break; 1881 1882 #ifndef HAVE_HOST_CONTROLLER_API 1883 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1884 hci_state_reset(); 1885 // prepare reset if command complete not received in 100ms 1886 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1887 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1888 btstack_run_loop_add_timer(&hci_stack->timeout); 1889 // send command 1890 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1891 hci_send_cmd(&hci_reset); 1892 break; 1893 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1894 hci_state_reset(); 1895 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1896 hci_send_cmd(&hci_reset); 1897 break; 1898 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1899 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1900 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1901 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1902 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1903 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1904 break; 1905 } 1906 case HCI_INIT_SET_BD_ADDR: 1907 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1908 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1909 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1910 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1911 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1912 break; 1913 case HCI_INIT_SEND_READ_LOCAL_NAME: 1914 #ifdef ENABLE_CLASSIC 1915 hci_send_cmd(&hci_read_local_name); 1916 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1917 break; 1918 #endif 1919 /* fall through */ 1920 1921 case HCI_INIT_SEND_BAUD_CHANGE: 1922 if (need_baud_change) { 1923 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1924 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1925 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1926 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1927 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1928 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1929 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1930 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1931 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1932 btstack_run_loop_add_timer(&hci_stack->timeout); 1933 } 1934 break; 1935 } 1936 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1937 1938 /* fall through */ 1939 1940 case HCI_INIT_CUSTOM_INIT: 1941 case HCI_INIT_CUSTOM_PRE_INIT: 1942 // Custom initialization 1943 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1944 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1945 bool send_cmd = false; 1946 switch (hci_stack->chipset_result){ 1947 case BTSTACK_CHIPSET_VALID_COMMAND: 1948 send_cmd = true; 1949 switch (hci_stack->substate){ 1950 case HCI_INIT_CUSTOM_INIT: 1951 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1952 break; 1953 case HCI_INIT_CUSTOM_PRE_INIT: 1954 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1955 break; 1956 default: 1957 btstack_assert(false); 1958 break; 1959 } 1960 break; 1961 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1962 send_cmd = true; 1963 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1964 log_info("CSR Warm Boot"); 1965 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1966 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1967 btstack_run_loop_add_timer(&hci_stack->timeout); 1968 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1969 && hci_stack->config 1970 && hci_stack->chipset 1971 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1972 && hci_stack->hci_transport->set_baudrate 1973 && hci_transport_uart_get_main_baud_rate()){ 1974 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1975 } else { 1976 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1977 } 1978 break; 1979 default: 1980 break; 1981 } 1982 1983 if (send_cmd){ 1984 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1985 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1986 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1987 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1988 break; 1989 } 1990 log_info("Init script done"); 1991 1992 // Custom Pre-Init complete, start regular init with HCI Reset 1993 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1994 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1995 hci_send_cmd(&hci_reset); 1996 break; 1997 } 1998 1999 // Init script download on Broadcom chipsets causes: 2000 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2001 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2002 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2003 2004 // - baud rate to reset, restore UART baud rate if needed 2005 if (need_baud_change) { 2006 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2007 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2008 hci_stack->hci_transport->set_baudrate(baud_rate); 2009 } 2010 2011 uint16_t bcm_delay_ms = 300; 2012 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2013 // -> Work around: wait here. 2014 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2015 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2016 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2017 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2018 btstack_run_loop_add_timer(&hci_stack->timeout); 2019 break; 2020 } 2021 } 2022 #endif 2023 /* fall through */ 2024 2025 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2026 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2027 hci_send_cmd(&hci_read_local_supported_commands); 2028 break; 2029 case HCI_INIT_READ_BD_ADDR: 2030 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2031 hci_send_cmd(&hci_read_bd_addr); 2032 break; 2033 case HCI_INIT_READ_BUFFER_SIZE: 2034 // only read buffer size if supported 2035 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2036 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2037 hci_send_cmd(&hci_read_buffer_size); 2038 break; 2039 } 2040 2041 /* fall through */ 2042 2043 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2044 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2045 hci_send_cmd(&hci_read_local_supported_features); 2046 break; 2047 2048 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2049 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2050 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2051 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2052 break; 2053 case HCI_INIT_HOST_BUFFER_SIZE: 2054 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2055 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2056 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2057 break; 2058 #endif 2059 2060 case HCI_INIT_SET_EVENT_MASK: 2061 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2062 if (hci_le_supported()){ 2063 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2064 } else { 2065 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2066 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2067 } 2068 break; 2069 2070 case HCI_INIT_SET_EVENT_MASK_2: 2071 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2072 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2073 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2074 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2075 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2076 // Encryption Change Event v2 - bit 25 2077 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2078 break; 2079 } 2080 2081 #ifdef ENABLE_CLASSIC 2082 /* fall through */ 2083 2084 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2085 if (hci_classic_supported() && gap_ssp_supported()){ 2086 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2087 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2088 break; 2089 } 2090 2091 /* fall through */ 2092 2093 case HCI_INIT_WRITE_INQUIRY_MODE: 2094 if (hci_classic_supported()){ 2095 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2096 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2097 break; 2098 } 2099 2100 /* fall through */ 2101 2102 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2103 // skip write secure connections host support if not supported or disabled 2104 if (hci_classic_supported() && hci_stack->secure_connections_enable 2105 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2106 hci_stack->secure_connections_active = true; 2107 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2108 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2109 break; 2110 } 2111 2112 /* fall through */ 2113 2114 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2115 // skip set min encryption key size 2116 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2117 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2118 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2119 break; 2120 } 2121 2122 #ifdef ENABLE_SCO_OVER_HCI 2123 /* fall through */ 2124 2125 // only sent if ENABLE_SCO_OVER_HCI is defined 2126 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2127 // skip write synchronous flow control if not supported 2128 if (hci_classic_supported() 2129 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2130 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2131 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2132 break; 2133 } 2134 /* fall through */ 2135 2136 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2137 // skip write default erroneous data reporting if not supported 2138 if (hci_classic_supported() 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2140 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2141 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2142 break; 2143 } 2144 #endif 2145 2146 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2147 /* fall through */ 2148 2149 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2150 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2151 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2152 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2153 #ifdef ENABLE_SCO_OVER_HCI 2154 log_info("BCM: Route SCO data via HCI transport"); 2155 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2156 #endif 2157 #ifdef ENABLE_SCO_OVER_PCM 2158 log_info("BCM: Route SCO data via PCM interface"); 2159 #ifdef ENABLE_BCM_PCM_WBS 2160 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2161 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2162 #else 2163 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2164 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2165 #endif 2166 #endif 2167 break; 2168 } 2169 #endif 2170 2171 #ifdef ENABLE_SCO_OVER_PCM 2172 /* fall through */ 2173 2174 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2175 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2176 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2177 log_info("BCM: Config PCM interface for I2S"); 2178 #ifdef ENABLE_BCM_PCM_WBS 2179 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2180 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2181 #else 2182 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2183 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2184 #endif 2185 break; 2186 } 2187 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2188 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2189 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2190 log_info("BCM: Config PCM Data format"); 2191 // msb first, fill bits 0, left justified 2192 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2193 break; 2194 } 2195 #ifdef HAVE_BCM_PCM2 2196 case HCI_INIT_BCM_PCM2_SETUP: 2197 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2198 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2199 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2200 uint32_t pcm_clock_freq; 2201 uint8_t ch_0_period; 2202 #ifdef ENABLE_BCM_PCM_WBS 2203 // 512 kHz, resample 8 kHz to 16 khz 2204 pcm_clock_freq = 512000; 2205 ch_0_period = 1; 2206 #else 2207 // 256 khz, 8 khz output 2208 pcm_clock_freq = 256000; 2209 ch_0_period = 0; 2210 #endif 2211 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2212 hci_send_cmd(&hci_bcm_pcm2_setup, 2213 0x00, // Action = Write 2214 0x00, // Test_Options = None 2215 op_mode, // Op_Mode 2216 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2217 pcm_clock_freq, // PCM_Clock_Freq 2218 0x01, // Sync_Signal_Width 2219 0x0F, // Slot_Width 2220 0x01, // NumberOfSlots 2221 0x00, // Bank_0_Fill_Mode = 0s 2222 0x00, // Bank_0_Number_of_Fill_Bits 2223 0x00, // Bank_0_Programmable_Fill_Data 2224 0x00, // Bank_1_Fill_Mode = 0s 2225 0x00, // Bank_1_Number_of_Fill_Bits 2226 0x00, // Bank_1_Programmable_Fill_Data 2227 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2228 0x00, // Ch_0_Slot_Number 2229 0x01, // Ch_1_Slot_Number 2230 0x02, // Ch_2_Slot_Number 2231 0x03, // Ch_3_Slot_Number 2232 0x04, // Ch_4_Slot_Number 2233 ch_0_period, // Ch_0_Period 2234 0x00, // Ch_1_Period 2235 0x00 // Ch_2_Period 2236 ); 2237 break; 2238 } 2239 #endif 2240 #endif /* ENABLE_SCO_OVER_PCM */ 2241 #endif /* ENABLE_CLASSIC */ 2242 2243 #ifdef ENABLE_BLE 2244 /* fall through */ 2245 2246 // LE INIT 2247 case HCI_INIT_LE_READ_BUFFER_SIZE: 2248 if (hci_le_supported()){ 2249 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2250 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2251 hci_send_cmd(&hci_le_read_buffer_size_v2); 2252 } else { 2253 hci_send_cmd(&hci_le_read_buffer_size); 2254 } 2255 break; 2256 } 2257 2258 /* fall through */ 2259 2260 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2261 // skip write le host if not supported (e.g. on LE only EM9301) 2262 if (hci_le_supported() 2263 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2264 // LE Supported Host = 1, Simultaneous Host = 0 2265 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2266 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2267 break; 2268 } 2269 2270 /* fall through */ 2271 2272 case HCI_INIT_LE_SET_EVENT_MASK: 2273 if (hci_le_supported()){ 2274 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2275 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2276 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2277 #else 2278 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2279 #endif 2280 break; 2281 } 2282 #endif 2283 2284 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2285 /* fall through */ 2286 2287 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2288 if (hci_le_supported() 2289 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2290 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2291 hci_send_cmd(&hci_le_read_maximum_data_length); 2292 break; 2293 } 2294 2295 /* fall through */ 2296 2297 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2298 if (hci_le_supported() 2299 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2300 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2301 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2302 break; 2303 } 2304 #endif 2305 2306 #ifdef ENABLE_LE_CENTRAL 2307 /* fall through */ 2308 2309 case HCI_INIT_READ_WHITE_LIST_SIZE: 2310 if (hci_le_supported()){ 2311 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2312 hci_send_cmd(&hci_le_read_white_list_size); 2313 break; 2314 } 2315 2316 #endif 2317 2318 #ifdef ENABLE_LE_PERIPHERAL 2319 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2320 /* fall through */ 2321 2322 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2323 if (hci_extended_advertising_supported()){ 2324 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2325 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2326 break; 2327 } 2328 #endif 2329 #endif 2330 /* fall through */ 2331 2332 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2333 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2334 if (hci_le_supported()) { 2335 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2336 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2337 break; 2338 } 2339 #endif 2340 2341 /* fall through */ 2342 2343 case HCI_INIT_DONE: 2344 hci_stack->substate = HCI_INIT_DONE; 2345 // main init sequence complete 2346 #ifdef ENABLE_CLASSIC 2347 // check if initial Classic GAP Tasks are completed 2348 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2349 hci_run_gap_tasks_classic(); 2350 break; 2351 } 2352 #endif 2353 #ifdef ENABLE_BLE 2354 #ifdef ENABLE_LE_CENTRAL 2355 // check if initial LE GAP Tasks are completed 2356 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2357 hci_run_general_gap_le(); 2358 break; 2359 } 2360 #endif 2361 #endif 2362 hci_init_done(); 2363 break; 2364 2365 default: 2366 return; 2367 } 2368 } 2369 2370 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2371 bool command_completed = false; 2372 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2373 uint16_t opcode = little_endian_read_16(packet,3); 2374 if (opcode == hci_stack->last_cmd_opcode){ 2375 command_completed = true; 2376 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2377 } else { 2378 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2379 } 2380 } 2381 2382 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2383 uint8_t status = packet[2]; 2384 uint16_t opcode = little_endian_read_16(packet,4); 2385 if (opcode == hci_stack->last_cmd_opcode){ 2386 if (status){ 2387 command_completed = true; 2388 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2389 } else { 2390 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2391 } 2392 } else { 2393 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2394 } 2395 } 2396 #ifndef HAVE_HOST_CONTROLLER_API 2397 // Vendor == CSR 2398 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2399 // TODO: track actual command 2400 command_completed = true; 2401 } 2402 2403 // Vendor == Toshiba 2404 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2405 // TODO: track actual command 2406 command_completed = true; 2407 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2408 hci_stack->num_cmd_packets = 1; 2409 } 2410 #endif 2411 2412 return command_completed; 2413 } 2414 2415 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2416 2417 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2418 2419 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2420 2421 #ifndef HAVE_HOST_CONTROLLER_API 2422 2423 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2424 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2425 // 2426 // HCI Reset 2427 // Timeout 100 ms 2428 // HCI Reset 2429 // Command Complete Reset 2430 // HCI Read Local Version Information 2431 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2432 // hang... 2433 // 2434 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2435 if (!command_completed 2436 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2437 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2438 2439 uint16_t opcode = little_endian_read_16(packet,3); 2440 if (opcode == hci_reset.opcode){ 2441 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2442 return; 2443 } 2444 } 2445 2446 // CSR & H5 2447 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2448 if (!command_completed 2449 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2450 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2451 2452 uint16_t opcode = little_endian_read_16(packet,3); 2453 if (opcode == hci_reset.opcode){ 2454 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2455 return; 2456 } 2457 } 2458 2459 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2460 // fix: Correct substate and behave as command below 2461 if (command_completed){ 2462 switch (hci_stack->substate){ 2463 case HCI_INIT_SEND_RESET: 2464 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2465 break; 2466 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2467 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2468 break; 2469 default: 2470 break; 2471 } 2472 } 2473 2474 #endif 2475 2476 if (!command_completed) return; 2477 2478 bool need_baud_change = false; 2479 bool need_addr_change = false; 2480 2481 #ifndef HAVE_HOST_CONTROLLER_API 2482 need_baud_change = hci_stack->config 2483 && hci_stack->chipset 2484 && hci_stack->chipset->set_baudrate_command 2485 && hci_stack->hci_transport->set_baudrate 2486 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2487 2488 need_addr_change = hci_stack->custom_bd_addr_set 2489 && hci_stack->chipset 2490 && hci_stack->chipset->set_bd_addr_command; 2491 #endif 2492 2493 switch(hci_stack->substate){ 2494 2495 #ifndef HAVE_HOST_CONTROLLER_API 2496 case HCI_INIT_SEND_RESET: 2497 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2498 // fix: just correct substate and behave as command below 2499 2500 /* fall through */ 2501 #endif 2502 2503 case HCI_INIT_W4_SEND_RESET: 2504 btstack_run_loop_remove_timer(&hci_stack->timeout); 2505 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2506 return; 2507 2508 #ifndef HAVE_HOST_CONTROLLER_API 2509 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2510 // for STLC2500D, baud rate change already happened. 2511 // for others, baud rate gets changed now 2512 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2513 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2514 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2515 hci_stack->hci_transport->set_baudrate(baud_rate); 2516 } 2517 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2518 return; 2519 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2520 btstack_run_loop_remove_timer(&hci_stack->timeout); 2521 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2522 return; 2523 case HCI_INIT_W4_CUSTOM_INIT: 2524 // repeat custom init 2525 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2526 return; 2527 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2528 // repeat custom init 2529 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2530 return; 2531 #endif 2532 2533 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2534 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2535 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2536 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2537 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2538 return; 2539 } 2540 if (need_addr_change){ 2541 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2542 return; 2543 } 2544 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2545 return; 2546 #ifndef HAVE_HOST_CONTROLLER_API 2547 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2548 if (need_baud_change){ 2549 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2550 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2551 hci_stack->hci_transport->set_baudrate(baud_rate); 2552 } 2553 if (need_addr_change){ 2554 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2555 return; 2556 } 2557 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2558 return; 2559 case HCI_INIT_W4_SET_BD_ADDR: 2560 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2561 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2562 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2563 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2564 return; 2565 } 2566 // skipping st warm boot 2567 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2568 return; 2569 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2570 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2571 return; 2572 #endif 2573 2574 case HCI_INIT_DONE: 2575 // set state if we came here by fall through 2576 hci_stack->substate = HCI_INIT_DONE; 2577 return; 2578 2579 default: 2580 break; 2581 } 2582 hci_initializing_next_state(); 2583 } 2584 2585 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2586 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2587 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2588 // check if we have been aware of the HCI connection 2589 switch (conn->state){ 2590 case SENT_CREATE_CONNECTION: 2591 case RECEIVED_CONNECTION_REQUEST: 2592 case ACCEPTED_CONNECTION_REQUEST: 2593 break; 2594 default: 2595 return; 2596 } 2597 2598 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2599 bd_addr_t bd_address; 2600 (void)memcpy(&bd_address, conn->address, 6); 2601 2602 #ifdef ENABLE_CLASSIC 2603 // cache needed data 2604 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2605 #endif 2606 2607 // connection failed, remove entry 2608 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2609 btstack_memory_hci_connection_free( conn ); 2610 2611 #ifdef ENABLE_CLASSIC 2612 // notify client if dedicated bonding 2613 if (notify_dedicated_bonding_failed){ 2614 log_info("hci notify_dedicated_bonding_failed"); 2615 hci_emit_dedicated_bonding_result(bd_address, status); 2616 } 2617 2618 // if authentication error, also delete link key 2619 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2620 gap_drop_link_key_for_bd_addr(bd_address); 2621 } 2622 #else 2623 UNUSED(status); 2624 #endif 2625 } 2626 2627 #ifdef ENABLE_CLASSIC 2628 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2629 // SSP Controller 2630 if (features[6] & (1 << 3)){ 2631 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2632 } 2633 // eSCO 2634 if (features[3] & (1<<7)){ 2635 conn->remote_supported_features[0] |= 1; 2636 } 2637 // Extended features 2638 if (features[7] & (1<<7)){ 2639 conn->remote_supported_features[0] |= 2; 2640 } 2641 // SCO packet types 2642 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2643 } 2644 2645 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2646 // SSP Host 2647 if (features[0] & (1 << 0)){ 2648 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2649 } 2650 // SC Host 2651 if (features[0] & (1 << 3)){ 2652 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2653 } 2654 } 2655 2656 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2657 // SC Controller 2658 if (features[1] & (1 << 0)){ 2659 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2660 } 2661 } 2662 2663 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2664 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2665 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2666 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2667 if (conn->bonding_flags & BONDING_DEDICATED){ 2668 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2669 } 2670 } 2671 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2672 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2673 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2674 } 2675 2676 #endif 2677 2678 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2679 // handle BT initialization 2680 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2681 hci_initializing_event_handler(packet, size); 2682 } 2683 2684 // help with BT sleep 2685 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2686 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2687 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2688 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2689 hci_initializing_next_state(); 2690 } 2691 } 2692 2693 #ifdef ENABLE_CLASSIC 2694 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2695 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2696 conn->requested_security_level = LEVEL_0; 2697 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2698 hci_emit_security_level(conn->con_handle, security_level); 2699 2700 // dedicated bonding 2701 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2702 conn->bonding_flags &= ~BONDING_DEDICATED; 2703 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2704 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2705 // emit dedicated bonding complete, don't disconnect 2706 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2707 #else 2708 // request disconnect, event is emitted after disconnect 2709 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2710 #endif 2711 } 2712 } 2713 2714 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2715 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2716 conn->encryption_key_size = encryption_key_size; 2717 2718 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2719 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2720 hci_handle_mutual_authentication_completed(conn); 2721 } else { 2722 // otherwise trigger remote feature request and send authentication request 2723 hci_trigger_remote_features_for_connection(conn); 2724 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2725 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2726 } 2727 } 2728 } 2729 #endif 2730 2731 static void hci_store_local_supported_commands(const uint8_t * packet){ 2732 // create mapping table 2733 #define X(name, offset, bit) { offset, bit }, 2734 static struct { 2735 uint8_t byte_offset; 2736 uint8_t bit_position; 2737 } supported_hci_commands_map [] = { 2738 SUPPORTED_HCI_COMMANDS 2739 }; 2740 #undef X 2741 2742 // create names for debug purposes 2743 #ifdef ENABLE_LOG_DEBUG 2744 #define X(name, offset, bit) #name, 2745 static const char * command_names[] = { 2746 SUPPORTED_HCI_COMMANDS 2747 }; 2748 #undef X 2749 #endif 2750 2751 hci_stack->local_supported_commands = 0; 2752 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2753 uint16_t i; 2754 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2755 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2756 #ifdef ENABLE_LOG_DEBUG 2757 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); 2758 #else 2759 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2760 #endif 2761 hci_stack->local_supported_commands |= (1LU << i); 2762 } 2763 } 2764 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2765 } 2766 2767 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2768 UNUSED(size); 2769 2770 uint8_t status = 0; 2771 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2772 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2773 } 2774 uint16_t manufacturer; 2775 #ifdef ENABLE_CLASSIC 2776 hci_connection_t * conn; 2777 #endif 2778 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2779 hci_con_handle_t handle; 2780 #endif 2781 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2782 le_audio_cig_t * cig; 2783 #endif 2784 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2785 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2786 #endif 2787 2788 // get num cmd packets - limit to 1 to reduce complexity 2789 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2790 2791 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2792 switch (opcode){ 2793 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2794 if (status) break; 2795 // terminate, name 248 chars 2796 packet[6+248] = 0; 2797 log_info("local name: %s", &packet[6]); 2798 break; 2799 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2800 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2801 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2802 uint16_t acl_len = little_endian_read_16(packet, 6); 2803 uint16_t sco_len = packet[8]; 2804 2805 // determine usable ACL/SCO payload size 2806 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2807 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2808 2809 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2810 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2811 2812 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2813 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2814 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2815 } 2816 break; 2817 case HCI_OPCODE_HCI_READ_RSSI: 2818 if (status == ERROR_CODE_SUCCESS){ 2819 uint8_t event[5]; 2820 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2821 event[1] = 3; 2822 (void)memcpy(&event[2], &packet[6], 3); 2823 hci_emit_event(event, sizeof(event), 1); 2824 } 2825 break; 2826 #ifdef ENABLE_BLE 2827 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2828 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2829 hci_stack->le_iso_packets_total_num = packet[11]; 2830 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2831 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2832 2833 /* fall through */ 2834 2835 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2836 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2837 hci_stack->le_acl_packets_total_num = packet[8]; 2838 // determine usable ACL payload size 2839 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2840 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2841 } 2842 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); 2843 break; 2844 #endif 2845 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2846 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2847 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2848 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2849 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); 2850 break; 2851 #endif 2852 #ifdef ENABLE_LE_CENTRAL 2853 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2854 hci_stack->le_whitelist_capacity = packet[6]; 2855 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2856 break; 2857 #endif 2858 #ifdef ENABLE_LE_PERIPHERAL 2859 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2860 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2861 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2862 break; 2863 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2864 if (hci_stack->le_advertising_set_in_current_command != 0) { 2865 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2866 hci_stack->le_advertising_set_in_current_command = 0; 2867 if (advertising_set == NULL) break; 2868 uint8_t adv_status = packet[6]; 2869 uint8_t tx_power = packet[7]; 2870 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 }; 2871 if (adv_status == 0){ 2872 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2873 } 2874 hci_emit_event(event, sizeof(event), 1); 2875 } 2876 break; 2877 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2878 if (hci_stack->le_advertising_set_in_current_command != 0) { 2879 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2880 hci_stack->le_advertising_set_in_current_command = 0; 2881 if (advertising_set == NULL) break; 2882 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2883 if (status == 0){ 2884 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2885 } 2886 hci_emit_event(event, sizeof(event), 1); 2887 } 2888 break; 2889 #endif 2890 #endif 2891 case HCI_OPCODE_HCI_READ_BD_ADDR: 2892 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2893 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2894 #ifdef ENABLE_CLASSIC 2895 if (hci_stack->link_key_db){ 2896 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2897 } 2898 #endif 2899 break; 2900 #ifdef ENABLE_CLASSIC 2901 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2902 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2903 break; 2904 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2905 if (status == ERROR_CODE_SUCCESS) { 2906 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2907 } else { 2908 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2909 } 2910 break; 2911 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2912 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2913 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2914 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2915 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2916 hci_emit_event(event, sizeof(event), 1); 2917 } 2918 break; 2919 #endif 2920 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2921 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2922 2923 #ifdef ENABLE_CLASSIC 2924 // determine usable ACL packet types based on host buffer size and supported features 2925 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]); 2926 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2927 // determine usable SCO packet types based on supported features 2928 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2929 &hci_stack->local_supported_features[0]); 2930 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2931 #endif 2932 // Classic/LE 2933 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2934 break; 2935 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2936 manufacturer = little_endian_read_16(packet, 10); 2937 // map Cypress & Infineon to Broadcom 2938 switch (manufacturer){ 2939 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2940 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2941 log_info("Treat Cypress/Infineon as Broadcom"); 2942 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2943 little_endian_store_16(packet, 10, manufacturer); 2944 break; 2945 default: 2946 break; 2947 } 2948 hci_stack->manufacturer = manufacturer; 2949 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2950 break; 2951 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2952 hci_store_local_supported_commands(packet); 2953 break; 2954 #ifdef ENABLE_CLASSIC 2955 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2956 if (status) return; 2957 hci_stack->synchronous_flow_control_enabled = 1; 2958 break; 2959 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2960 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2961 conn = hci_connection_for_handle(handle); 2962 if (conn != NULL) { 2963 uint8_t key_size = 0; 2964 if (status == 0){ 2965 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2966 log_info("Handle %04x key Size: %u", handle, key_size); 2967 } else { 2968 key_size = 1; 2969 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2970 } 2971 hci_handle_read_encryption_key_size_complete(conn, key_size); 2972 } 2973 break; 2974 // assert pairing complete event is emitted. 2975 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2976 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2977 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2978 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2979 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2980 // lookup connection by gap pairing addr 2981 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2982 if (conn == NULL) break; 2983 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2984 break; 2985 2986 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2987 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2988 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2989 uint8_t event[67]; 2990 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2991 event[1] = 65; 2992 (void)memset(&event[2], 0, 65); 2993 if (status == ERROR_CODE_SUCCESS){ 2994 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2995 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2996 event[2] = 3; 2997 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2998 } else { 2999 event[2] = 1; 3000 } 3001 } 3002 hci_emit_event(event, sizeof(event), 0); 3003 break; 3004 } 3005 3006 // note: only needed if user does not provide OOB data 3007 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3008 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3009 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3010 if (conn == NULL) break; 3011 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3012 break; 3013 #endif 3014 #endif 3015 #ifdef ENABLE_BLE 3016 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3017 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3018 // lookup CIG 3019 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3020 if (cig != NULL){ 3021 uint8_t i = 0; 3022 if (status == ERROR_CODE_SUCCESS){ 3023 // assign CIS handles to pre-allocated CIS 3024 btstack_linked_list_iterator_t it; 3025 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3026 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3027 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3028 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3029 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3030 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3031 iso_stream->cis_handle = cis_handle; 3032 cig->cis_con_handles[i] = cis_handle; 3033 i++; 3034 } 3035 } 3036 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3037 hci_emit_cig_created(cig, status); 3038 } else { 3039 hci_emit_cig_created(cig, status); 3040 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3041 } 3042 } 3043 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3044 break; 3045 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3046 if (status != ERROR_CODE_SUCCESS){ 3047 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3048 } 3049 break; 3050 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3051 if (status != ERROR_CODE_SUCCESS){ 3052 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3053 } 3054 break; 3055 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3056 // lookup BIG by state 3057 btstack_linked_list_iterator_t it; 3058 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3059 while (btstack_linked_list_iterator_has_next(&it)) { 3060 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3061 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3062 if (status == ERROR_CODE_SUCCESS){ 3063 big->state_vars.next_bis++; 3064 if (big->state_vars.next_bis == big->num_bis){ 3065 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3066 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3067 } else { 3068 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3069 } 3070 } else { 3071 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3072 big->state_vars.status = status; 3073 } 3074 return; 3075 } 3076 } 3077 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3078 while (btstack_linked_list_iterator_has_next(&it)) { 3079 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3080 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3081 if (status == ERROR_CODE_SUCCESS){ 3082 big_sync->state_vars.next_bis++; 3083 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3084 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3085 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3086 } else { 3087 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3088 } 3089 } else { 3090 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3091 big_sync->state_vars.status = status; 3092 } 3093 return; 3094 } 3095 } 3096 // Lookup CIS via active group operation 3097 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3098 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3099 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3100 3101 // lookup CIS by state 3102 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3103 while (btstack_linked_list_iterator_has_next(&it)){ 3104 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3105 handle = iso_stream->cis_handle; 3106 bool emit_cis_created = false; 3107 switch (iso_stream->state){ 3108 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3109 if (status != ERROR_CODE_SUCCESS){ 3110 emit_cis_created = true; 3111 break; 3112 } 3113 if (iso_stream->max_sdu_c_to_p > 0){ 3114 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3115 } else { 3116 emit_cis_created = true; 3117 } 3118 break; 3119 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3120 emit_cis_created = true; 3121 break; 3122 default: 3123 break; 3124 } 3125 if (emit_cis_created){ 3126 hci_cis_handle_created(iso_stream, status); 3127 } 3128 } 3129 } else { 3130 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3131 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3132 if (cig != NULL) { 3133 // emit cis created if all ISO Paths have been created 3134 // assume we are central 3135 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3136 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3137 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3138 // if outgoing has been setup, or incoming was setup but outgoing not required 3139 if ((cis_direction == 1) || (outgoing_needed == false)){ 3140 // lookup iso stream by cig/cis 3141 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3142 while (btstack_linked_list_iterator_has_next(&it)) { 3143 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3144 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3145 hci_cis_handle_created(iso_stream, status); 3146 } 3147 } 3148 } 3149 // next state 3150 cig->state_vars.next_cis++; 3151 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3152 } 3153 } 3154 } 3155 break; 3156 } 3157 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3158 // lookup BIG by state 3159 btstack_linked_list_iterator_t it; 3160 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3161 while (btstack_linked_list_iterator_has_next(&it)) { 3162 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3163 uint8_t big_handle = big_sync->big_handle; 3164 switch (big_sync->state){ 3165 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3166 btstack_linked_list_iterator_remove(&it); 3167 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3168 return; 3169 default: 3170 btstack_linked_list_iterator_remove(&it); 3171 hci_emit_big_sync_stopped(big_handle); 3172 return; 3173 } 3174 } 3175 break; 3176 } 3177 #endif 3178 #endif 3179 default: 3180 break; 3181 } 3182 } 3183 3184 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3185 UNUSED(size); 3186 3187 // get num cmd packets - limit to 1 to reduce complexity 3188 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3189 3190 // get opcode and command status 3191 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3192 3193 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3194 uint8_t status = hci_event_command_status_get_status(packet); 3195 #endif 3196 3197 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3198 bd_addr_type_t addr_type; 3199 bd_addr_t addr; 3200 #endif 3201 3202 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3203 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3204 #endif 3205 3206 switch (opcode){ 3207 #ifdef ENABLE_CLASSIC 3208 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3209 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3210 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3211 #endif 3212 #ifdef ENABLE_LE_CENTRAL 3213 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3214 #endif 3215 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3216 addr_type = hci_stack->outgoing_addr_type; 3217 memcpy(addr, hci_stack->outgoing_addr, 6); 3218 3219 // reset outgoing address info 3220 memset(hci_stack->outgoing_addr, 0, 6); 3221 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3222 3223 // on error 3224 if (status != ERROR_CODE_SUCCESS){ 3225 #ifdef ENABLE_LE_CENTRAL 3226 if (hci_is_le_connection_type(addr_type)){ 3227 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3228 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3229 } 3230 #endif 3231 // error => outgoing connection failed 3232 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3233 if (conn != NULL){ 3234 hci_handle_connection_failed(conn, status); 3235 } 3236 } 3237 break; 3238 #endif 3239 #ifdef ENABLE_CLASSIC 3240 case HCI_OPCODE_HCI_INQUIRY: 3241 if (status == ERROR_CODE_SUCCESS) { 3242 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3243 } else { 3244 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3245 } 3246 break; 3247 #endif 3248 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3249 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3250 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3251 if (status == ERROR_CODE_SUCCESS){ 3252 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3253 } else { 3254 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3255 } 3256 break; 3257 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3258 default: 3259 break; 3260 } 3261 } 3262 3263 #ifdef ENABLE_BLE 3264 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3265 gap_event[0] = HCI_EVENT_META_GAP; 3266 gap_event[1] = 36 - 2; 3267 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3268 switch (hci_event[2]){ 3269 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3270 memcpy(&gap_event[3], &hci_event[3], 11); 3271 memset(&gap_event[14], 0, 12); 3272 memcpy(&gap_event[26], &hci_event[14], 7); 3273 memset(&gap_event[33], 0xff, 3); 3274 break; 3275 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3276 memcpy(&gap_event[3], &hci_event[3], 30); 3277 memset(&gap_event[33], 0xff, 3); 3278 break; 3279 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3280 memcpy(&gap_event[3], &hci_event[3], 33); 3281 break; 3282 default: 3283 btstack_unreachable(); 3284 break; 3285 } 3286 } 3287 3288 static void event_handle_le_connection_complete(const uint8_t * hci_event){ 3289 bd_addr_t addr; 3290 bd_addr_type_t addr_type; 3291 hci_connection_t * conn; 3292 3293 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3294 uint8_t gap_event[36]; 3295 hci_create_gap_connection_complete_event(hci_event, gap_event); 3296 3297 // read fields 3298 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3299 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3300 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3301 3302 // Connection management 3303 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3304 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3305 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3306 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3307 3308 #ifdef ENABLE_LE_CENTRAL 3309 // handle error: error is reported only to the initiator -> outgoing connection 3310 if (status){ 3311 3312 // handle cancelled outgoing connection 3313 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3314 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3315 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3316 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3317 // reset state 3318 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3319 // get outgoing connection conn struct for direct connect 3320 conn = gap_get_outgoing_connection(); 3321 } 3322 3323 // outgoing le connection establishment is done 3324 if (conn){ 3325 // remove entry 3326 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3327 btstack_memory_hci_connection_free( conn ); 3328 } 3329 return; 3330 } 3331 #endif 3332 3333 // on success, both hosts receive connection complete event 3334 if (role == HCI_ROLE_MASTER){ 3335 #ifdef ENABLE_LE_CENTRAL 3336 // if we're master on an le connection, it was an outgoing connection and we're done with it 3337 // note: no hci_connection_t object exists yet for connect with whitelist 3338 if (hci_is_le_connection_type(addr_type)){ 3339 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3340 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3341 } 3342 #endif 3343 } else { 3344 #ifdef ENABLE_LE_PERIPHERAL 3345 // if we're slave, it was an incoming connection, advertisements have stopped 3346 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3347 #endif 3348 } 3349 3350 // LE connections are auto-accepted, so just create a connection if there isn't one already 3351 if (!conn){ 3352 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3353 } 3354 3355 // no memory, sorry. 3356 if (!conn){ 3357 return; 3358 } 3359 3360 conn->state = OPEN; 3361 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3362 conn->le_connection_interval = conn_interval; 3363 3364 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3365 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3366 3367 #ifdef ENABLE_LE_PERIPHERAL 3368 if (role == HCI_ROLE_SLAVE){ 3369 hci_update_advertisements_enabled_for_current_roles(); 3370 } 3371 #endif 3372 3373 // init unenhanced att bearer mtu 3374 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3375 conn->att_connection.mtu_exchanged = false; 3376 3377 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3378 3379 // restart timer 3380 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3381 // btstack_run_loop_add_timer(&conn->timeout); 3382 3383 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3384 3385 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3386 hci_emit_event(gap_event, sizeof(gap_event), 1); 3387 3388 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3389 hci_emit_nr_connections_changed(); 3390 } 3391 #endif 3392 3393 #ifdef ENABLE_CLASSIC 3394 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){ 3395 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3396 // LEVEL_4 is tested by l2cap 3397 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3398 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3399 if (level >= LEVEL_3){ 3400 // MITM not possible without keyboard or display 3401 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3402 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3403 3404 // MITM possible if one side has keyboard and the other has keyboard or display 3405 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3406 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3407 3408 // MITM not possible if one side has only display and other side has no keyboard 3409 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3410 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3411 } 3412 // LEVEL 2 requires SSP, which is a given 3413 return true; 3414 } 3415 3416 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3417 // get requested security level 3418 gap_security_level_t requested_security_level = conn->requested_security_level; 3419 if (hci_stack->gap_secure_connections_only_mode){ 3420 requested_security_level = LEVEL_4; 3421 } 3422 3423 // assess security: LEVEL 4 requires SC 3424 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3425 if ((requested_security_level == LEVEL_4) && 3426 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3427 !hci_remote_sc_enabled(conn)){ 3428 log_info("Level 4 required, but SC not supported -> abort"); 3429 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3430 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3431 return; 3432 } 3433 3434 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3435 // - GAP/MOD/NBON/BV-02-C 3436 // - GAP/DM/NBON/BV-01-C 3437 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3438 switch (conn->io_cap_response_auth_req){ 3439 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3440 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3441 if (hci_stack->bondable == false){ 3442 log_info("Dedicated vs. non-bondable -> abort"); 3443 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3444 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3445 return; 3446 } 3447 default: 3448 break; 3449 } 3450 } 3451 3452 // assess security based on io capabilities 3453 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3454 // responder: fully validate io caps of both sides as well as OOB data 3455 bool security_possible = false; 3456 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3457 3458 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3459 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3460 // so we merge the OOB data availability 3461 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3462 if (conn->classic_oob_c_192 != NULL){ 3463 have_oob_data |= 1; 3464 } 3465 if (conn->classic_oob_c_256 != NULL){ 3466 have_oob_data |= 2; 3467 } 3468 // for up to Level 3, either P-192 as well as P-256 will do 3469 // 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 3470 // if remote does not SC, we should not receive P-256 data either 3471 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3472 security_possible = true; 3473 } 3474 // for Level 4, P-256 is needed 3475 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3476 security_possible = true; 3477 } 3478 #endif 3479 3480 if (security_possible == false){ 3481 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3482 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3483 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3484 return; 3485 } 3486 } else { 3487 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3488 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3489 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3490 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3491 log_info("Level 3+ required, but no input/output -> abort"); 3492 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3493 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3494 return; 3495 } 3496 #endif 3497 #endif 3498 } 3499 3500 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3501 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3502 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3503 } else { 3504 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3505 } 3506 #endif 3507 } 3508 3509 #endif 3510 3511 static void event_handler(uint8_t *packet, uint16_t size){ 3512 3513 uint16_t event_length = packet[1]; 3514 3515 // assert packet is complete 3516 if (size != (event_length + 2u)){ 3517 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3518 return; 3519 } 3520 3521 hci_con_handle_t handle; 3522 hci_connection_t * conn; 3523 int i; 3524 3525 #ifdef ENABLE_CLASSIC 3526 hci_link_type_t link_type; 3527 bd_addr_t addr; 3528 bd_addr_type_t addr_type; 3529 #endif 3530 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3531 hci_iso_stream_t * iso_stream; 3532 le_audio_big_t * big; 3533 le_audio_big_sync_t * big_sync; 3534 #endif 3535 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3536 btstack_linked_list_iterator_t it; 3537 #endif 3538 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3539 uint8_t advertising_handle; 3540 #endif 3541 3542 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3543 3544 switch (hci_event_packet_get_type(packet)) { 3545 3546 case HCI_EVENT_COMMAND_COMPLETE: 3547 handle_command_complete_event(packet, size); 3548 break; 3549 3550 case HCI_EVENT_COMMAND_STATUS: 3551 handle_command_status_event(packet, size); 3552 break; 3553 3554 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3555 if (size < 3) return; 3556 uint16_t num_handles = packet[2]; 3557 if (size != (3u + num_handles * 4u)) return; 3558 #ifdef ENABLE_CLASSIC 3559 bool notify_sco = false; 3560 #endif 3561 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3562 bool notify_iso = false; 3563 #endif 3564 uint16_t offset = 3; 3565 for (i=0; i<num_handles;i++){ 3566 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3567 offset += 2u; 3568 uint16_t num_packets = little_endian_read_16(packet, offset); 3569 offset += 2u; 3570 3571 conn = hci_connection_for_handle(handle); 3572 if (conn != NULL) { 3573 3574 if (conn->num_packets_sent >= num_packets) { 3575 conn->num_packets_sent -= num_packets; 3576 } else { 3577 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3578 conn->num_packets_sent = 0; 3579 } 3580 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3581 #ifdef ENABLE_CLASSIC 3582 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3583 notify_sco = true; 3584 } 3585 #endif 3586 } 3587 3588 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3589 hci_controller_dump_packets(); 3590 #endif 3591 3592 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3593 if (conn == NULL){ 3594 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3595 if (iso_stream != NULL){ 3596 if (iso_stream->num_packets_sent >= num_packets) { 3597 iso_stream->num_packets_sent -= num_packets; 3598 } else { 3599 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3600 iso_stream->num_packets_sent = 0; 3601 } 3602 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3603 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3604 if (big != NULL){ 3605 big->num_completed_timestamp_current_valid = true; 3606 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3607 } 3608 } 3609 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3610 num_packets, handle, iso_stream->num_packets_sent); 3611 notify_iso = true; 3612 } 3613 } 3614 #endif 3615 } 3616 3617 #ifdef ENABLE_CLASSIC 3618 if (notify_sco){ 3619 hci_notify_if_sco_can_send_now(); 3620 } 3621 #endif 3622 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3623 if (notify_iso){ 3624 hci_iso_notify_can_send_now(); 3625 } 3626 #endif 3627 break; 3628 } 3629 3630 #ifdef ENABLE_CLASSIC 3631 case HCI_EVENT_FLUSH_OCCURRED: 3632 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3633 handle = hci_event_flush_occurred_get_handle(packet); 3634 conn = hci_connection_for_handle(handle); 3635 if (conn) { 3636 log_info("Flush occurred, disconnect 0x%04x", handle); 3637 conn->state = SEND_DISCONNECT; 3638 } 3639 break; 3640 3641 case HCI_EVENT_INQUIRY_COMPLETE: 3642 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3643 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3644 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3645 hci_emit_event(event, sizeof(event), 1); 3646 } 3647 break; 3648 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3649 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3650 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3651 } 3652 break; 3653 case HCI_EVENT_CONNECTION_REQUEST: 3654 reverse_bd_addr(&packet[2], addr); 3655 link_type = (hci_link_type_t) packet[11]; 3656 3657 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3658 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3659 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3660 bd_addr_copy(hci_stack->decline_addr, addr); 3661 break; 3662 } 3663 3664 if (hci_stack->gap_classic_accept_callback != NULL){ 3665 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3666 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3667 bd_addr_copy(hci_stack->decline_addr, addr); 3668 break; 3669 } 3670 } 3671 3672 // TODO: eval COD 8-10 3673 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3674 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3675 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3676 if (!conn) { 3677 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3678 } 3679 if (!conn) { 3680 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3681 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3682 bd_addr_copy(hci_stack->decline_addr, addr); 3683 hci_run(); 3684 // avoid event to higher layer 3685 return; 3686 } 3687 conn->state = RECEIVED_CONNECTION_REQUEST; 3688 // store info about eSCO 3689 if (link_type == HCI_LINK_TYPE_ESCO){ 3690 conn->remote_supported_features[0] |= 1; 3691 } 3692 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3693 if (addr_type == BD_ADDR_TYPE_SCO){ 3694 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3695 // ACL exists unless fuzzing 3696 if (acl_conn != NULL) { 3697 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3698 } 3699 } 3700 hci_run(); 3701 break; 3702 3703 case HCI_EVENT_CONNECTION_COMPLETE: 3704 // Connection management 3705 reverse_bd_addr(&packet[5], addr); 3706 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3707 addr_type = BD_ADDR_TYPE_ACL; 3708 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3709 if (conn) { 3710 switch (conn->state){ 3711 // expected states 3712 case ACCEPTED_CONNECTION_REQUEST: 3713 case SENT_CREATE_CONNECTION: 3714 break; 3715 // unexpected state -> ignore 3716 default: 3717 // don't forward event to app 3718 return; 3719 } 3720 if (!packet[2]){ 3721 conn->state = OPEN; 3722 conn->con_handle = little_endian_read_16(packet, 3); 3723 3724 // trigger write supervision timeout if we're master 3725 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3726 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3727 } 3728 3729 // trigger write automatic flush timeout 3730 if (hci_stack->automatic_flush_timeout != 0){ 3731 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3732 } 3733 3734 // restart timer 3735 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3736 btstack_run_loop_add_timer(&conn->timeout); 3737 3738 // trigger remote features for dedicated bonding 3739 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3740 hci_trigger_remote_features_for_connection(conn); 3741 } 3742 3743 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3744 3745 hci_emit_nr_connections_changed(); 3746 } else { 3747 // connection failed 3748 hci_handle_connection_failed(conn, packet[2]); 3749 } 3750 } 3751 break; 3752 3753 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3754 reverse_bd_addr(&packet[5], addr); 3755 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3756 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3757 3758 // SCO exists unless fuzzer 3759 if (conn == NULL) break; 3760 3761 if (packet[2] != ERROR_CODE_SUCCESS){ 3762 // connection failed, remove entry 3763 hci_handle_connection_failed(conn, packet[2]); 3764 break; 3765 } 3766 3767 conn->state = OPEN; 3768 conn->con_handle = little_endian_read_16(packet, 3); 3769 3770 // update sco payload length for eSCO connections 3771 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3772 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3773 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3774 } 3775 3776 #ifdef ENABLE_SCO_OVER_HCI 3777 // update SCO 3778 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3779 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3780 } 3781 // trigger can send now 3782 if (hci_have_usb_transport()){ 3783 hci_stack->sco_can_send_now = true; 3784 } 3785 3786 // setup implict sco flow control 3787 conn->sco_tx_ready = 0; 3788 conn->sco_tx_active = 0; 3789 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3790 3791 #endif 3792 #ifdef HAVE_SCO_TRANSPORT 3793 // configure sco transport 3794 if (hci_stack->sco_transport != NULL){ 3795 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3796 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3797 } 3798 #endif 3799 break; 3800 3801 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3802 handle = little_endian_read_16(packet, 3); 3803 conn = hci_connection_for_handle(handle); 3804 if (!conn) break; 3805 if (!packet[2]){ 3806 const uint8_t * features = &packet[5]; 3807 hci_handle_remote_features_page_0(conn, features); 3808 3809 // read extended features if possible 3810 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3811 && ((conn->remote_supported_features[0] & 2) != 0)) { 3812 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3813 break; 3814 } 3815 } 3816 hci_handle_remote_features_received(conn); 3817 break; 3818 3819 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3820 handle = little_endian_read_16(packet, 3); 3821 conn = hci_connection_for_handle(handle); 3822 if (!conn) break; 3823 // status = ok, page = 1 3824 if (!packet[2]) { 3825 uint8_t page_number = packet[5]; 3826 uint8_t maximum_page_number = packet[6]; 3827 const uint8_t * features = &packet[7]; 3828 bool done = false; 3829 switch (page_number){ 3830 case 1: 3831 hci_handle_remote_features_page_1(conn, features); 3832 if (maximum_page_number >= 2){ 3833 // get Secure Connections (Controller) from Page 2 if available 3834 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3835 } else { 3836 // otherwise, assume SC (Controller) == SC (Host) 3837 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3838 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3839 } 3840 done = true; 3841 } 3842 break; 3843 case 2: 3844 hci_handle_remote_features_page_2(conn, features); 3845 done = true; 3846 break; 3847 default: 3848 break; 3849 } 3850 if (!done) break; 3851 } 3852 hci_handle_remote_features_received(conn); 3853 break; 3854 3855 case HCI_EVENT_LINK_KEY_REQUEST: 3856 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3857 hci_event_link_key_request_get_bd_addr(packet, addr); 3858 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3859 if (!conn) break; 3860 3861 // lookup link key in db if not cached 3862 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3863 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3864 } 3865 3866 // response sent by hci_run() 3867 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3868 #endif 3869 break; 3870 3871 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3872 hci_event_link_key_request_get_bd_addr(packet, addr); 3873 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3874 if (!conn) break; 3875 3876 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3877 3878 // CVE-2020-26555: ignore NULL link key 3879 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3880 if (btstack_is_null(&packet[8], 16)) break; 3881 3882 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3883 // Change Connection Encryption keeps link key type 3884 if (link_key_type != CHANGED_COMBINATION_KEY){ 3885 conn->link_key_type = link_key_type; 3886 } 3887 3888 // cache link key. link keys stored in little-endian format for legacy reasons 3889 memcpy(&conn->link_key, &packet[8], 16); 3890 3891 // only store link key: 3892 // - if bondable enabled 3893 if (hci_stack->bondable == false) break; 3894 // - if security level sufficient 3895 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3896 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3897 break; 3898 } 3899 3900 case HCI_EVENT_PIN_CODE_REQUEST: 3901 hci_event_pin_code_request_get_bd_addr(packet, addr); 3902 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3903 if (!conn) break; 3904 3905 hci_pairing_started(conn, false); 3906 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3907 if (!hci_stack->bondable ){ 3908 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3909 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3910 hci_run(); 3911 return; 3912 } 3913 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3914 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3915 log_info("Level 4 required, but SC not supported -> abort"); 3916 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3917 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3918 hci_run(); 3919 return; 3920 } 3921 break; 3922 3923 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3924 hci_event_io_capability_response_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_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3929 hci_pairing_started(conn, true); 3930 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3931 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3932 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3933 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3934 #endif 3935 break; 3936 3937 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3938 hci_event_io_capability_response_get_bd_addr(packet, addr); 3939 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3940 if (!conn) break; 3941 3942 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3943 hci_connection_timestamp(conn); 3944 hci_pairing_started(conn, true); 3945 break; 3946 3947 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3948 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3949 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3950 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3951 if (!conn) break; 3952 3953 hci_connection_timestamp(conn); 3954 3955 hci_pairing_started(conn, true); 3956 3957 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3958 break; 3959 #endif 3960 3961 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3962 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3963 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3964 if (!conn) break; 3965 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3966 if (hci_stack->ssp_auto_accept){ 3967 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3968 }; 3969 } else { 3970 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3971 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3972 // don't forward event to app 3973 hci_run(); 3974 return; 3975 } 3976 break; 3977 3978 case HCI_EVENT_USER_PASSKEY_REQUEST: 3979 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3980 if (hci_stack->ssp_auto_accept){ 3981 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3982 }; 3983 break; 3984 3985 case HCI_EVENT_MODE_CHANGE: 3986 handle = hci_event_mode_change_get_handle(packet); 3987 conn = hci_connection_for_handle(handle); 3988 if (!conn) break; 3989 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3990 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3991 break; 3992 #endif 3993 3994 case HCI_EVENT_ENCRYPTION_CHANGE: 3995 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3996 handle = hci_event_encryption_change_get_connection_handle(packet); 3997 conn = hci_connection_for_handle(handle); 3998 if (!conn) break; 3999 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4000 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4001 if (encryption_enabled){ 4002 if (hci_is_le_connection(conn)){ 4003 // For LE, we accept connection as encrypted 4004 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4005 } 4006 #ifdef ENABLE_CLASSIC 4007 else { 4008 4009 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4010 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4011 bool connected_uses_aes_ccm = encryption_enabled == 2; 4012 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4013 #ifdef ENABLE_TESTING_SUPPORT 4014 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4015 // - GAP/SEC/SEM/BI-31-C 4016 // - GAP/SEC/SEM/BI-32-C 4017 // - GAP/SEC/SEM/BI-33-C 4018 4019 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4020 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4021 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4022 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4023 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4024 } 4025 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4026 conn->link_key_type, new_link_key_type); 4027 conn->link_key_type = new_link_key_type; 4028 #else 4029 log_info("SC during pairing, but only E0 now -> abort"); 4030 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4031 break; 4032 #endif 4033 } 4034 4035 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4036 if (connected_uses_aes_ccm){ 4037 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4038 } 4039 4040 #ifdef ENABLE_TESTING_SUPPORT 4041 // work around for issue with PTS dongle 4042 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4043 #endif 4044 // validate encryption key size 4045 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4046 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4047 // already got encryption key size 4048 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4049 } else { 4050 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4051 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4052 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4053 } else { 4054 // if not, pretend everything is perfect 4055 hci_handle_read_encryption_key_size_complete(conn, 16); 4056 } 4057 } 4058 } 4059 #endif 4060 } else { 4061 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4062 } 4063 } else { 4064 #ifdef ENABLE_CLASSIC 4065 if (!hci_is_le_connection(conn)){ 4066 uint8_t status = hci_event_encryption_change_get_status(packet); 4067 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4068 conn->bonding_flags &= ~BONDING_DEDICATED; 4069 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4070 conn->bonding_status = status; 4071 } 4072 // trigger security update -> level 0 4073 hci_handle_mutual_authentication_completed(conn); 4074 } 4075 #endif 4076 } 4077 4078 break; 4079 4080 #ifdef ENABLE_CLASSIC 4081 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4082 handle = hci_event_authentication_complete_get_connection_handle(packet); 4083 conn = hci_connection_for_handle(handle); 4084 if (!conn) break; 4085 4086 // clear authentication active flag 4087 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4088 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4089 4090 // authenticated only if auth status == 0 4091 if (hci_event_authentication_complete_get_status(packet) == 0){ 4092 // authenticated 4093 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4094 4095 // If not already encrypted, start encryption 4096 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4097 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4098 break; 4099 } 4100 } 4101 4102 // emit updated security level (will be 0 if not authenticated) 4103 hci_handle_mutual_authentication_completed(conn); 4104 break; 4105 4106 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4107 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4108 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4109 if (!conn) break; 4110 4111 // treat successfully paired connection as authenticated 4112 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4113 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4114 } 4115 4116 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4117 break; 4118 #endif 4119 4120 // HCI_EVENT_DISCONNECTION_COMPLETE 4121 // has been split, to first notify stack before shutting connection down 4122 // see end of function, too. 4123 case HCI_EVENT_DISCONNECTION_COMPLETE: 4124 if (packet[2]) break; // status != 0 4125 handle = little_endian_read_16(packet, 3); 4126 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4127 if (hci_stack->acl_fragmentation_total_size > 0u) { 4128 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4129 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4130 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4131 hci_stack->acl_fragmentation_total_size = 0; 4132 hci_stack->acl_fragmentation_pos = 0; 4133 if (release_buffer){ 4134 hci_release_packet_buffer(); 4135 } 4136 } 4137 } 4138 4139 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4140 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4141 if (hci_stack->iso_fragmentation_total_size > 0u) { 4142 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4143 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4144 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4145 hci_stack->iso_fragmentation_total_size = 0; 4146 hci_stack->iso_fragmentation_pos = 0; 4147 if (release_buffer){ 4148 hci_release_packet_buffer(); 4149 } 4150 } 4151 } 4152 4153 // finalize iso stream for CIS handle 4154 iso_stream = hci_iso_stream_for_con_handle(handle); 4155 if (iso_stream != NULL){ 4156 hci_iso_stream_finalize(iso_stream); 4157 break; 4158 } 4159 4160 // finalize iso stream(s) for ACL handle 4161 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4162 while (btstack_linked_list_iterator_has_next(&it)){ 4163 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4164 if (iso_stream->acl_handle == handle ) { 4165 hci_iso_stream_finalize(iso_stream); 4166 } 4167 } 4168 #endif 4169 4170 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4171 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4172 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4173 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4174 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4175 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4176 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4177 hci_stack->num_cmd_packets = 1; 4178 } 4179 #endif 4180 4181 conn = hci_connection_for_handle(handle); 4182 if (!conn) break; 4183 #ifdef ENABLE_CLASSIC 4184 // pairing failed if it was ongoing 4185 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4186 #endif 4187 4188 // emit dedicatd bonding event 4189 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4190 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4191 } 4192 4193 // mark connection for shutdown, stop timers, reset state 4194 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4195 hci_connection_stop_timer(conn); 4196 hci_connection_init(conn); 4197 4198 #ifdef ENABLE_BLE 4199 #ifdef ENABLE_LE_PERIPHERAL 4200 // re-enable advertisements for le connections if active 4201 if (hci_is_le_connection(conn)){ 4202 hci_update_advertisements_enabled_for_current_roles(); 4203 } 4204 #endif 4205 #endif 4206 break; 4207 4208 case HCI_EVENT_HARDWARE_ERROR: 4209 log_error("Hardware Error: 0x%02x", packet[2]); 4210 if (hci_stack->hardware_error_callback){ 4211 (*hci_stack->hardware_error_callback)(packet[2]); 4212 } else { 4213 // if no special requests, just reboot stack 4214 hci_power_control_off(); 4215 hci_power_control_on(); 4216 } 4217 break; 4218 4219 #ifdef ENABLE_CLASSIC 4220 case HCI_EVENT_ROLE_CHANGE: 4221 if (packet[2]) break; // status != 0 4222 reverse_bd_addr(&packet[3], addr); 4223 addr_type = BD_ADDR_TYPE_ACL; 4224 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4225 if (!conn) break; 4226 conn->role = (hci_role_t) packet[9]; 4227 break; 4228 #endif 4229 4230 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4231 // release packet buffer only for asynchronous transport and if there are not further fragments 4232 if (hci_transport_synchronous()) { 4233 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4234 return; // instead of break: to avoid re-entering hci_run() 4235 } 4236 hci_stack->acl_fragmentation_tx_active = 0; 4237 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4238 hci_stack->iso_fragmentation_tx_active = 0; 4239 if (hci_stack->iso_fragmentation_total_size) break; 4240 #endif 4241 if (hci_stack->acl_fragmentation_total_size) break; 4242 hci_release_packet_buffer(); 4243 4244 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4245 hci_iso_notify_can_send_now(); 4246 #endif 4247 // L2CAP receives this event via the hci_emit_event below 4248 4249 #ifdef ENABLE_CLASSIC 4250 // For SCO, we do the can_send_now_check here 4251 hci_notify_if_sco_can_send_now(); 4252 #endif 4253 break; 4254 4255 #ifdef ENABLE_CLASSIC 4256 case HCI_EVENT_SCO_CAN_SEND_NOW: 4257 // For SCO, we do the can_send_now_check here 4258 hci_stack->sco_can_send_now = true; 4259 hci_notify_if_sco_can_send_now(); 4260 return; 4261 4262 // explode inquriy results for easier consumption 4263 case HCI_EVENT_INQUIRY_RESULT: 4264 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4265 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4266 gap_inquiry_explode(packet, size); 4267 break; 4268 #endif 4269 4270 #ifdef ENABLE_BLE 4271 case HCI_EVENT_LE_META: 4272 switch (packet[2]){ 4273 #ifdef ENABLE_LE_CENTRAL 4274 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4275 if (!hci_stack->le_scanning_enabled) break; 4276 le_handle_advertisement_report(packet, size); 4277 break; 4278 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4279 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4280 if (!hci_stack->le_scanning_enabled) break; 4281 le_handle_extended_advertisement_report(packet, size); 4282 break; 4283 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4284 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4285 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4286 break; 4287 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4288 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4289 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4290 while (btstack_linked_list_iterator_has_next(&it)) { 4291 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4292 if (advertising_set->advertising_handle == advertising_handle){ 4293 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4294 } 4295 } 4296 break; 4297 #endif 4298 #endif 4299 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4300 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4301 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4302 event_handle_le_connection_complete(packet); 4303 break; 4304 4305 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4306 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4307 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4308 conn = hci_connection_for_handle(handle); 4309 if (!conn) break; 4310 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4311 break; 4312 4313 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4314 // connection 4315 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4316 conn = hci_connection_for_handle(handle); 4317 if (conn) { 4318 // read arguments 4319 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4320 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4321 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4322 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4323 4324 // validate against current connection parameter range 4325 le_connection_parameter_range_t existing_range; 4326 gap_get_connection_parameter_range(&existing_range); 4327 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4328 if (update_parameter){ 4329 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4330 conn->le_conn_interval_min = le_conn_interval_min; 4331 conn->le_conn_interval_max = le_conn_interval_max; 4332 conn->le_conn_latency = le_conn_latency; 4333 conn->le_supervision_timeout = le_supervision_timeout; 4334 } else { 4335 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4336 } 4337 } 4338 break; 4339 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4340 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4341 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4342 conn = hci_connection_for_handle(handle); 4343 if (conn) { 4344 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4345 } 4346 break; 4347 #endif 4348 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4349 case HCI_SUBEVENT_LE_CIS_REQUEST: 4350 // incoming CIS request, allocate iso stream object and cache metadata 4351 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4352 hci_subevent_le_cis_request_get_cig_id(packet), 4353 hci_subevent_le_cis_request_get_cis_id(packet)); 4354 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4355 if (iso_stream != NULL){ 4356 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4357 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4358 } 4359 break; 4360 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4361 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4362 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4363 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4364 iso_stream = hci_iso_stream_for_con_handle(handle); 4365 btstack_assert(iso_stream != NULL); 4366 // track connection info 4367 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4368 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4369 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4370 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4371 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4372 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4373 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4374 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4375 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4376 // CIS Accept by Peripheral 4377 if (status == ERROR_CODE_SUCCESS){ 4378 if (iso_stream->max_sdu_p_to_c > 0){ 4379 // we're peripheral and we will send data 4380 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4381 } else { 4382 // we're peripheral and we will only receive data 4383 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4384 } 4385 } else { 4386 hci_cis_handle_created(iso_stream, status); 4387 } 4388 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4389 } else { 4390 // CIG Setup by Central 4391 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4392 btstack_assert(cig != NULL); 4393 // update iso stream state 4394 if (status == ERROR_CODE_SUCCESS){ 4395 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4396 } else { 4397 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4398 } 4399 // update cig state 4400 uint8_t i; 4401 for (i=0;i<cig->num_cis;i++){ 4402 if (cig->cis_con_handles[i] == handle){ 4403 cig->cis_setup_active[i] = false; 4404 if (status == ERROR_CODE_SUCCESS){ 4405 cig->cis_established[i] = true; 4406 } else { 4407 hci_cis_handle_created(iso_stream, status); 4408 } 4409 } 4410 } 4411 4412 // trigger iso path setup if complete 4413 bool cis_setup_active = false; 4414 for (i=0;i<cig->num_cis;i++){ 4415 cis_setup_active |= cig->cis_setup_active[i]; 4416 } 4417 if (cis_setup_active == false){ 4418 cig->state_vars.next_cis = 0; 4419 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4420 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4421 } 4422 } 4423 } 4424 break; 4425 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4426 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4427 big = hci_big_for_handle(packet[4]); 4428 if (big != NULL){ 4429 uint8_t status = packet[3]; 4430 if (status == ERROR_CODE_SUCCESS){ 4431 // store bis_con_handles and trigger iso path setup 4432 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4433 uint8_t i; 4434 for (i=0;i<num_bis;i++){ 4435 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4436 big->bis_con_handles[i] = bis_handle; 4437 // assign bis handle 4438 btstack_linked_list_iterator_t it; 4439 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4440 while (btstack_linked_list_iterator_has_next(&it)){ 4441 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4442 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4443 (iso_stream->group_id == big->big_handle)){ 4444 iso_stream->cis_handle = bis_handle; 4445 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4446 break; 4447 } 4448 } 4449 } 4450 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4451 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4452 big->state_vars.next_bis = 0; 4453 } 4454 } else { 4455 // create BIG failed or has been stopped by us 4456 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4457 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4458 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4459 hci_emit_big_created(big, status); 4460 } else { 4461 hci_emit_big_terminated(big); 4462 } 4463 } 4464 } 4465 break; 4466 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4467 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4468 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4469 if (big != NULL){ 4470 // finalize associated ISO streams 4471 btstack_linked_list_iterator_t it; 4472 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4473 while (btstack_linked_list_iterator_has_next(&it)){ 4474 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4475 if (iso_stream->group_id == big->big_handle){ 4476 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4477 btstack_linked_list_iterator_remove(&it); 4478 btstack_memory_hci_iso_stream_free(iso_stream); 4479 } 4480 } 4481 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4482 switch (big->state){ 4483 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4484 hci_emit_big_created(big, big->state_vars.status); 4485 break; 4486 default: 4487 hci_emit_big_terminated(big); 4488 break; 4489 } 4490 } 4491 break; 4492 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4493 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4494 big_sync = hci_big_sync_for_handle(packet[4]); 4495 if (big_sync != NULL){ 4496 uint8_t status = packet[3]; 4497 uint8_t big_handle = packet[4]; 4498 if (status == ERROR_CODE_SUCCESS){ 4499 // store bis_con_handles and trigger iso path setup 4500 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4501 uint8_t i; 4502 for (i=0;i<num_bis;i++){ 4503 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4504 big_sync->bis_con_handles[i] = bis_handle; 4505 // setup iso_stream_t 4506 btstack_linked_list_iterator_t it; 4507 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4508 while (btstack_linked_list_iterator_has_next(&it)){ 4509 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4510 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4511 (iso_stream->group_id == big_sync->big_handle)){ 4512 iso_stream->cis_handle = bis_handle; 4513 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4514 break; 4515 } 4516 } 4517 } 4518 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4519 // trigger iso path setup 4520 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4521 big_sync->state_vars.next_bis = 0; 4522 } 4523 } else { 4524 // create BIG Sync failed or has been stopped by us 4525 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4526 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4527 hci_emit_big_sync_created(big_sync, status); 4528 } else { 4529 hci_emit_big_sync_stopped(big_handle); 4530 } 4531 } 4532 } 4533 break; 4534 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4535 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4536 big_sync = hci_big_sync_for_handle(packet[4]); 4537 if (big_sync != NULL){ 4538 uint8_t big_handle = packet[4]; 4539 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4540 hci_emit_big_sync_stopped(big_handle); 4541 } 4542 break; 4543 #endif 4544 default: 4545 break; 4546 } 4547 break; 4548 #endif 4549 case HCI_EVENT_VENDOR_SPECIFIC: 4550 // Vendor specific commands often create vendor specific event instead of num completed packets 4551 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4552 switch (hci_stack->manufacturer){ 4553 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4554 hci_stack->num_cmd_packets = 1; 4555 break; 4556 default: 4557 break; 4558 } 4559 break; 4560 default: 4561 break; 4562 } 4563 4564 handle_event_for_current_stack_state(packet, size); 4565 4566 // notify upper stack 4567 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4568 4569 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4570 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4571 handle = little_endian_read_16(packet, 3); 4572 hci_connection_t * aConn = hci_connection_for_handle(handle); 4573 // discard connection if app did not trigger a reconnect in the event handler 4574 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4575 hci_shutdown_connection(aConn); 4576 } 4577 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4578 hci_controller_dump_packets(); 4579 #endif 4580 } 4581 4582 // execute main loop 4583 hci_run(); 4584 } 4585 4586 #ifdef ENABLE_CLASSIC 4587 4588 static void sco_handler(uint8_t * packet, uint16_t size){ 4589 // lookup connection struct 4590 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4591 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4592 if (!conn) return; 4593 4594 #ifdef ENABLE_SCO_OVER_HCI 4595 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4596 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4597 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4598 packet[2] = 0x3c; 4599 memmove(&packet[3], &packet[23], 63); 4600 size = 63; 4601 } 4602 } 4603 4604 if (hci_have_usb_transport()){ 4605 // Nothing to do 4606 } else { 4607 // 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); 4608 if (hci_stack->synchronous_flow_control_enabled == 0){ 4609 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4610 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4611 if (conn->sco_tx_active == 0){ 4612 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4613 conn->sco_tx_active = 1; 4614 conn->sco_tx_ready = max_sco_packets; 4615 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4616 hci_notify_if_sco_can_send_now(); 4617 } 4618 } else { 4619 if (conn->sco_tx_ready < max_sco_packets){ 4620 conn->sco_tx_ready++; 4621 } 4622 hci_notify_if_sco_can_send_now(); 4623 } 4624 } 4625 } 4626 #endif 4627 4628 // deliver to app 4629 if (hci_stack->sco_packet_handler) { 4630 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4631 } 4632 4633 #ifdef HAVE_SCO_TRANSPORT 4634 // We can send one packet for each received packet 4635 conn->sco_tx_ready++; 4636 hci_notify_if_sco_can_send_now(); 4637 #endif 4638 4639 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4640 conn->num_packets_completed++; 4641 hci_stack->host_completed_packets = 1; 4642 hci_run(); 4643 #endif 4644 } 4645 #endif 4646 4647 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4648 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4649 // propagate ISO packets received as ACL 4650 hci_iso_stream_t * iso_stream = NULL; 4651 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4652 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4653 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4654 if (iso_stream != NULL){ 4655 packet_type = HCI_ISO_DATA_PACKET; 4656 } 4657 } 4658 #endif 4659 4660 hci_dump_packet(packet_type, 1, packet, size); 4661 switch (packet_type) { 4662 case HCI_EVENT_PACKET: 4663 event_handler(packet, size); 4664 break; 4665 case HCI_ACL_DATA_PACKET: 4666 acl_handler(packet, size); 4667 break; 4668 #ifdef ENABLE_CLASSIC 4669 case HCI_SCO_DATA_PACKET: 4670 sco_handler(packet, size); 4671 break; 4672 #endif 4673 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4674 case HCI_ISO_DATA_PACKET: 4675 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4676 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4677 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4678 } 4679 hci_iso_packet_handler(iso_stream, packet, size); 4680 break; 4681 #endif 4682 default: 4683 break; 4684 } 4685 } 4686 4687 /** 4688 * @brief Add event packet handler. 4689 */ 4690 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4691 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4692 } 4693 4694 /** 4695 * @brief Remove event packet handler. 4696 */ 4697 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4698 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4699 } 4700 4701 /** Register HCI packet handlers */ 4702 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4703 hci_stack->acl_packet_handler = handler; 4704 } 4705 4706 #ifdef ENABLE_CLASSIC 4707 /** 4708 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4709 */ 4710 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4711 hci_stack->sco_packet_handler = handler; 4712 } 4713 #endif 4714 4715 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4716 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4717 hci_stack->iso_packet_handler = handler; 4718 } 4719 #endif 4720 4721 static void hci_state_reset(void){ 4722 // no connections yet 4723 hci_stack->connections = NULL; 4724 4725 // keep discoverable/connectable as this has been requested by the client(s) 4726 // hci_stack->discoverable = 0; 4727 // hci_stack->connectable = 0; 4728 // hci_stack->bondable = 1; 4729 // hci_stack->own_addr_type = 0; 4730 4731 // buffer is free 4732 hci_stack->hci_packet_buffer_reserved = false; 4733 4734 // no pending cmds 4735 hci_stack->decline_reason = 0; 4736 4737 hci_stack->secure_connections_active = false; 4738 4739 #ifdef ENABLE_CLASSIC 4740 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4741 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4742 4743 hci_stack->gap_tasks_classic = 4744 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4745 GAP_TASK_SET_CLASS_OF_DEVICE | 4746 GAP_TASK_SET_LOCAL_NAME | 4747 GAP_TASK_SET_EIR_DATA | 4748 GAP_TASK_WRITE_SCAN_ENABLE | 4749 GAP_TASK_WRITE_PAGE_TIMEOUT; 4750 #endif 4751 4752 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4753 hci_stack->classic_read_local_oob_data = false; 4754 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4755 #endif 4756 4757 // LE 4758 #ifdef ENABLE_BLE 4759 memset(hci_stack->le_random_address, 0, 6); 4760 hci_stack->le_random_address_set = 0; 4761 #endif 4762 #ifdef ENABLE_LE_CENTRAL 4763 hci_stack->le_scanning_active = false; 4764 hci_stack->le_scanning_param_update = true; 4765 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4766 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4767 hci_stack->le_whitelist_capacity = 0; 4768 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4769 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4770 #endif 4771 #endif 4772 #ifdef ENABLE_LE_PERIPHERAL 4773 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4774 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4775 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4776 } 4777 if (hci_stack->le_advertisements_data != NULL){ 4778 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4779 } 4780 #endif 4781 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4782 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4783 #endif 4784 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4785 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4786 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4787 #endif 4788 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4789 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4790 #endif 4791 } 4792 4793 #ifdef ENABLE_CLASSIC 4794 /** 4795 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4796 */ 4797 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4798 // store and open remote device db 4799 hci_stack->link_key_db = link_key_db; 4800 if (hci_stack->link_key_db) { 4801 hci_stack->link_key_db->open(); 4802 } 4803 } 4804 #endif 4805 4806 void hci_init(const hci_transport_t *transport, const void *config){ 4807 4808 #ifdef HAVE_MALLOC 4809 if (!hci_stack) { 4810 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4811 } 4812 #else 4813 hci_stack = &hci_stack_static; 4814 #endif 4815 memset(hci_stack, 0, sizeof(hci_stack_t)); 4816 4817 // reference to use transport layer implementation 4818 hci_stack->hci_transport = transport; 4819 4820 // reference to used config 4821 hci_stack->config = config; 4822 4823 // setup pointer for outgoing packet buffer 4824 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4825 4826 // max acl payload size defined in config.h 4827 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4828 4829 // register packet handlers with transport 4830 transport->register_packet_handler(&packet_handler); 4831 4832 hci_stack->state = HCI_STATE_OFF; 4833 4834 // class of device 4835 hci_stack->class_of_device = 0x007a020c; // Smartphone 4836 4837 // bondable by default 4838 hci_stack->bondable = 1; 4839 4840 #ifdef ENABLE_CLASSIC 4841 // classic name 4842 hci_stack->local_name = default_classic_name; 4843 4844 // Master slave policy 4845 hci_stack->master_slave_policy = 1; 4846 4847 // Allow Role Switch 4848 hci_stack->allow_role_switch = 1; 4849 4850 // Default / minimum security level = 2 4851 hci_stack->gap_security_level = LEVEL_2; 4852 4853 // Default Security Mode 4 4854 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4855 4856 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4857 hci_stack->gap_required_encyrption_key_size = 7; 4858 4859 // Link Supervision Timeout 4860 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4861 4862 // All ACL packet types are enabledh 4863 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4864 #endif 4865 4866 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4867 hci_stack->ssp_enable = 1; 4868 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4869 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4870 hci_stack->ssp_auto_accept = 1; 4871 4872 // Secure Connections: enable (requires support from Controller) 4873 hci_stack->secure_connections_enable = true; 4874 4875 // voice setting - signed 16 bit pcm data with CVSD over the air 4876 hci_stack->sco_voice_setting = 0x60; 4877 4878 #ifdef ENABLE_BLE 4879 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4880 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4881 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4882 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4883 hci_stack->le_connection_latency = 4; // 4 4884 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4885 hci_stack->le_minimum_ce_length = 0; // 0 ms 4886 hci_stack->le_maximum_ce_length = 0; // 0 ms 4887 #endif 4888 4889 #ifdef ENABLE_LE_CENTRAL 4890 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4891 4892 // default LE Scanning 4893 hci_stack->le_scan_type = 0x01; // active 4894 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4895 hci_stack->le_scan_window = 0x30; // 30 ms 4896 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4897 #endif 4898 4899 #ifdef ENABLE_LE_PERIPHERAL 4900 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4901 4902 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4903 hci_stack->le_advertisements_interval_min = 0x0800; 4904 hci_stack->le_advertisements_interval_max = 0x0800; 4905 hci_stack->le_advertisements_type = 0; 4906 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4907 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4908 hci_stack->le_advertisements_channel_map = 0x07; 4909 hci_stack->le_advertisements_filter_policy = 0; 4910 #endif 4911 4912 // connection parameter range used to answer connection parameter update requests in l2cap 4913 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4914 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4915 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4916 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4917 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4918 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4919 4920 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4921 hci_stack->iso_packets_to_queue = 1; 4922 #endif 4923 4924 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4925 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4926 #endif 4927 4928 hci_state_reset(); 4929 } 4930 4931 void hci_deinit(void){ 4932 btstack_run_loop_remove_timer(&hci_stack->timeout); 4933 #ifdef HAVE_MALLOC 4934 if (hci_stack) { 4935 free(hci_stack); 4936 } 4937 #endif 4938 hci_stack = NULL; 4939 4940 #ifdef ENABLE_CLASSIC 4941 disable_l2cap_timeouts = 0; 4942 #endif 4943 } 4944 4945 /** 4946 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4947 */ 4948 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4949 hci_stack->chipset = chipset_driver; 4950 4951 // reset chipset driver - init is also called on power_up 4952 if (hci_stack->chipset && hci_stack->chipset->init){ 4953 hci_stack->chipset->init(hci_stack->config); 4954 } 4955 } 4956 4957 void hci_enable_custom_pre_init(void){ 4958 hci_stack->chipset_pre_init = true; 4959 } 4960 4961 /** 4962 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4963 */ 4964 void hci_set_control(const btstack_control_t *hardware_control){ 4965 // references to used control implementation 4966 hci_stack->control = hardware_control; 4967 // init with transport config 4968 hardware_control->init(hci_stack->config); 4969 } 4970 4971 static void hci_discard_connections(void){ 4972 btstack_linked_list_iterator_t it; 4973 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4974 while (btstack_linked_list_iterator_has_next(&it)){ 4975 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4976 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4977 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4978 hci_shutdown_connection(connection); 4979 } 4980 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4981 while (hci_stack->iso_streams != NULL){ 4982 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4983 } 4984 #endif 4985 } 4986 4987 void hci_close(void){ 4988 4989 #ifdef ENABLE_CLASSIC 4990 // close remote device db 4991 if (hci_stack->link_key_db) { 4992 hci_stack->link_key_db->close(); 4993 } 4994 #endif 4995 4996 hci_discard_connections(); 4997 4998 hci_power_control(HCI_POWER_OFF); 4999 5000 #ifdef HAVE_MALLOC 5001 free(hci_stack); 5002 #endif 5003 hci_stack = NULL; 5004 } 5005 5006 #ifdef HAVE_SCO_TRANSPORT 5007 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5008 hci_stack->sco_transport = sco_transport; 5009 sco_transport->register_packet_handler(&packet_handler); 5010 } 5011 #endif 5012 5013 #ifdef ENABLE_CLASSIC 5014 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5015 // validate ranage and set 5016 if (encryption_key_size < 7) return; 5017 if (encryption_key_size > 16) return; 5018 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5019 } 5020 5021 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5022 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5023 hci_stack->gap_security_mode = security_mode; 5024 return ERROR_CODE_SUCCESS; 5025 } else { 5026 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5027 } 5028 } 5029 5030 gap_security_mode_t gap_get_security_mode(void){ 5031 return hci_stack->gap_security_mode; 5032 } 5033 5034 void gap_set_security_level(gap_security_level_t security_level){ 5035 hci_stack->gap_security_level = security_level; 5036 } 5037 5038 gap_security_level_t gap_get_security_level(void){ 5039 if (hci_stack->gap_secure_connections_only_mode){ 5040 return LEVEL_4; 5041 } 5042 return hci_stack->gap_security_level; 5043 } 5044 5045 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5046 hci_stack->gap_minimal_service_security_level = security_level; 5047 } 5048 5049 void gap_set_secure_connections_only_mode(bool enable){ 5050 hci_stack->gap_secure_connections_only_mode = enable; 5051 } 5052 5053 bool gap_get_secure_connections_only_mode(void){ 5054 return hci_stack->gap_secure_connections_only_mode; 5055 } 5056 #endif 5057 5058 #ifdef ENABLE_CLASSIC 5059 void gap_set_class_of_device(uint32_t class_of_device){ 5060 hci_stack->class_of_device = class_of_device; 5061 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5062 hci_run(); 5063 } 5064 5065 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5066 hci_stack->default_link_policy_settings = default_link_policy_settings; 5067 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5068 hci_run(); 5069 } 5070 5071 void gap_set_allow_role_switch(bool allow_role_switch){ 5072 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5073 } 5074 5075 uint8_t hci_get_allow_role_switch(void){ 5076 return hci_stack->allow_role_switch; 5077 } 5078 5079 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5080 hci_stack->link_supervision_timeout = link_supervision_timeout; 5081 } 5082 5083 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5084 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5085 } 5086 5087 uint16_t hci_automatic_flush_timeout(void){ 5088 return hci_stack->automatic_flush_timeout; 5089 } 5090 5091 void hci_disable_l2cap_timeout_check(void){ 5092 disable_l2cap_timeouts = 1; 5093 } 5094 #endif 5095 5096 #ifndef HAVE_HOST_CONTROLLER_API 5097 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5098 void hci_set_bd_addr(bd_addr_t addr){ 5099 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5100 hci_stack->custom_bd_addr_set = 1; 5101 } 5102 #endif 5103 5104 // State-Module-Driver overview 5105 // state module low-level 5106 // HCI_STATE_OFF off close 5107 // HCI_STATE_INITIALIZING, on open 5108 // HCI_STATE_WORKING, on open 5109 // HCI_STATE_HALTING, on open 5110 // HCI_STATE_SLEEPING, off/sleep close 5111 // HCI_STATE_FALLING_ASLEEP on open 5112 5113 static int hci_power_control_on(void){ 5114 5115 // power on 5116 int err = 0; 5117 if (hci_stack->control && hci_stack->control->on){ 5118 err = (*hci_stack->control->on)(); 5119 } 5120 if (err){ 5121 log_error( "POWER_ON failed"); 5122 hci_emit_hci_open_failed(); 5123 return err; 5124 } 5125 5126 // int chipset driver 5127 if (hci_stack->chipset && hci_stack->chipset->init){ 5128 hci_stack->chipset->init(hci_stack->config); 5129 } 5130 5131 // init transport 5132 if (hci_stack->hci_transport->init){ 5133 hci_stack->hci_transport->init(hci_stack->config); 5134 } 5135 5136 // open transport 5137 err = hci_stack->hci_transport->open(); 5138 if (err){ 5139 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5140 if (hci_stack->control && hci_stack->control->off){ 5141 (*hci_stack->control->off)(); 5142 } 5143 hci_emit_hci_open_failed(); 5144 return err; 5145 } 5146 return 0; 5147 } 5148 5149 static void hci_power_control_off(void){ 5150 5151 log_info("hci_power_control_off"); 5152 5153 // close low-level device 5154 hci_stack->hci_transport->close(); 5155 5156 log_info("hci_power_control_off - hci_transport closed"); 5157 5158 // power off 5159 if (hci_stack->control && hci_stack->control->off){ 5160 (*hci_stack->control->off)(); 5161 } 5162 5163 log_info("hci_power_control_off - control closed"); 5164 5165 hci_stack->state = HCI_STATE_OFF; 5166 } 5167 5168 static void hci_power_control_sleep(void){ 5169 5170 log_info("hci_power_control_sleep"); 5171 5172 #if 0 5173 // don't close serial port during sleep 5174 5175 // close low-level device 5176 hci_stack->hci_transport->close(hci_stack->config); 5177 #endif 5178 5179 // sleep mode 5180 if (hci_stack->control && hci_stack->control->sleep){ 5181 (*hci_stack->control->sleep)(); 5182 } 5183 5184 hci_stack->state = HCI_STATE_SLEEPING; 5185 } 5186 5187 static int hci_power_control_wake(void){ 5188 5189 log_info("hci_power_control_wake"); 5190 5191 // wake on 5192 if (hci_stack->control && hci_stack->control->wake){ 5193 (*hci_stack->control->wake)(); 5194 } 5195 5196 #if 0 5197 // open low-level device 5198 int err = hci_stack->hci_transport->open(hci_stack->config); 5199 if (err){ 5200 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5201 if (hci_stack->control && hci_stack->control->off){ 5202 (*hci_stack->control->off)(); 5203 } 5204 hci_emit_hci_open_failed(); 5205 return err; 5206 } 5207 #endif 5208 5209 return 0; 5210 } 5211 5212 static void hci_power_enter_initializing_state(void){ 5213 // set up state machine 5214 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5215 hci_stack->hci_packet_buffer_reserved = false; 5216 hci_stack->state = HCI_STATE_INITIALIZING; 5217 5218 #ifndef HAVE_HOST_CONTROLLER_API 5219 if (hci_stack->chipset_pre_init) { 5220 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5221 } else 5222 #endif 5223 { 5224 hci_stack->substate = HCI_INIT_SEND_RESET; 5225 } 5226 } 5227 5228 static void hci_power_enter_halting_state(void){ 5229 #ifdef ENABLE_BLE 5230 // drop entries scheduled for removal, mark others for re-adding 5231 btstack_linked_list_iterator_t it; 5232 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5233 while (btstack_linked_list_iterator_has_next(&it)){ 5234 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5235 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5236 btstack_linked_list_iterator_remove(&it); 5237 btstack_memory_whitelist_entry_free(entry); 5238 } else { 5239 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5240 } 5241 } 5242 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5243 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5244 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5245 while (btstack_linked_list_iterator_has_next(&it)){ 5246 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5247 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5248 btstack_linked_list_iterator_remove(&it); 5249 btstack_memory_periodic_advertiser_list_entry_free(entry); 5250 } else { 5251 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5252 continue; 5253 } 5254 } 5255 #endif 5256 #endif 5257 // see hci_run 5258 hci_stack->state = HCI_STATE_HALTING; 5259 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5260 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5261 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5262 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5263 btstack_run_loop_add_timer(&hci_stack->timeout); 5264 } 5265 5266 // returns error 5267 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5268 int err; 5269 switch (power_mode){ 5270 case HCI_POWER_ON: 5271 err = hci_power_control_on(); 5272 if (err != 0) { 5273 log_error("hci_power_control_on() error %d", err); 5274 return err; 5275 } 5276 hci_power_enter_initializing_state(); 5277 break; 5278 case HCI_POWER_OFF: 5279 // do nothing 5280 break; 5281 case HCI_POWER_SLEEP: 5282 // do nothing (with SLEEP == OFF) 5283 break; 5284 default: 5285 btstack_assert(false); 5286 break; 5287 } 5288 return ERROR_CODE_SUCCESS; 5289 } 5290 5291 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5292 switch (power_mode){ 5293 case HCI_POWER_ON: 5294 // do nothing 5295 break; 5296 case HCI_POWER_OFF: 5297 // no connections yet, just turn it off 5298 hci_power_control_off(); 5299 break; 5300 case HCI_POWER_SLEEP: 5301 // no connections yet, just turn it off 5302 hci_power_control_sleep(); 5303 break; 5304 default: 5305 btstack_assert(false); 5306 break; 5307 } 5308 return ERROR_CODE_SUCCESS; 5309 } 5310 5311 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5312 switch (power_mode){ 5313 case HCI_POWER_ON: 5314 // do nothing 5315 break; 5316 case HCI_POWER_OFF: 5317 hci_power_enter_halting_state(); 5318 break; 5319 case HCI_POWER_SLEEP: 5320 // see hci_run 5321 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5322 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5323 break; 5324 default: 5325 btstack_assert(false); 5326 break; 5327 } 5328 return ERROR_CODE_SUCCESS; 5329 } 5330 5331 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5332 switch (power_mode){ 5333 case HCI_POWER_ON: 5334 hci_power_enter_initializing_state(); 5335 break; 5336 case HCI_POWER_OFF: 5337 // do nothing 5338 break; 5339 case HCI_POWER_SLEEP: 5340 // see hci_run 5341 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5342 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5343 break; 5344 default: 5345 btstack_assert(false); 5346 break; 5347 } 5348 return ERROR_CODE_SUCCESS; 5349 } 5350 5351 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5352 switch (power_mode){ 5353 case HCI_POWER_ON: 5354 hci_power_enter_initializing_state(); 5355 break; 5356 case HCI_POWER_OFF: 5357 hci_power_enter_halting_state(); 5358 break; 5359 case HCI_POWER_SLEEP: 5360 // do nothing 5361 break; 5362 default: 5363 btstack_assert(false); 5364 break; 5365 } 5366 return ERROR_CODE_SUCCESS; 5367 } 5368 5369 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5370 int err; 5371 switch (power_mode){ 5372 case HCI_POWER_ON: 5373 err = hci_power_control_wake(); 5374 if (err) return err; 5375 hci_power_enter_initializing_state(); 5376 break; 5377 case HCI_POWER_OFF: 5378 hci_power_enter_halting_state(); 5379 break; 5380 case HCI_POWER_SLEEP: 5381 // do nothing 5382 break; 5383 default: 5384 btstack_assert(false); 5385 break; 5386 } 5387 return ERROR_CODE_SUCCESS; 5388 } 5389 5390 int hci_power_control(HCI_POWER_MODE power_mode){ 5391 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5392 btstack_run_loop_remove_timer(&hci_stack->timeout); 5393 int err = 0; 5394 switch (hci_stack->state){ 5395 case HCI_STATE_OFF: 5396 err = hci_power_control_state_off(power_mode); 5397 break; 5398 case HCI_STATE_INITIALIZING: 5399 err = hci_power_control_state_initializing(power_mode); 5400 break; 5401 case HCI_STATE_WORKING: 5402 err = hci_power_control_state_working(power_mode); 5403 break; 5404 case HCI_STATE_HALTING: 5405 err = hci_power_control_state_halting(power_mode); 5406 break; 5407 case HCI_STATE_FALLING_ASLEEP: 5408 err = hci_power_control_state_falling_asleep(power_mode); 5409 break; 5410 case HCI_STATE_SLEEPING: 5411 err = hci_power_control_state_sleeping(power_mode); 5412 break; 5413 default: 5414 btstack_assert(false); 5415 break; 5416 } 5417 if (err != 0){ 5418 return err; 5419 } 5420 5421 // create internal event 5422 hci_emit_state(); 5423 5424 // trigger next/first action 5425 hci_run(); 5426 5427 return 0; 5428 } 5429 5430 5431 static void hci_halting_run(void) { 5432 5433 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5434 5435 hci_connection_t *connection; 5436 #ifdef ENABLE_BLE 5437 #ifdef ENABLE_LE_PERIPHERAL 5438 bool stop_advertismenets; 5439 #endif 5440 #endif 5441 5442 switch (hci_stack->substate) { 5443 case HCI_HALTING_CLASSIC_STOP: 5444 #ifdef ENABLE_CLASSIC 5445 if (!hci_can_send_command_packet_now()) return; 5446 5447 if (hci_stack->connectable || hci_stack->discoverable){ 5448 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5449 hci_send_cmd(&hci_write_scan_enable, 0); 5450 return; 5451 } 5452 #endif 5453 /* fall through */ 5454 5455 case HCI_HALTING_LE_ADV_STOP: 5456 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5457 5458 #ifdef ENABLE_BLE 5459 #ifdef ENABLE_LE_PERIPHERAL 5460 if (!hci_can_send_command_packet_now()) return; 5461 5462 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5463 5464 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5465 if (hci_extended_advertising_supported()){ 5466 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5467 btstack_linked_list_iterator_t it; 5468 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5469 // stop all periodic advertisements and check if an extended set is active 5470 while (btstack_linked_list_iterator_has_next(&it)){ 5471 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5472 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5473 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5474 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5475 return; 5476 } 5477 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5478 stop_advertismenets = true; 5479 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5480 } 5481 } 5482 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5483 if (stop_advertismenets){ 5484 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5485 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5486 return; 5487 } 5488 } else 5489 #else /* ENABLE_LE_PERIPHERAL */ 5490 { 5491 if (stop_advertismenets) { 5492 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5493 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5494 return; 5495 } 5496 } 5497 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5498 #endif /* ENABLE_LE_PERIPHERAL */ 5499 #endif /* ENABLE_BLE */ 5500 5501 /* fall through */ 5502 5503 case HCI_HALTING_LE_SCAN_STOP: 5504 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5505 if (!hci_can_send_command_packet_now()) return; 5506 5507 #ifdef ENABLE_BLE 5508 #ifdef ENABLE_LE_CENTRAL 5509 if (hci_stack->le_scanning_active){ 5510 hci_le_scan_stop(); 5511 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5512 return; 5513 } 5514 #endif 5515 #endif 5516 5517 /* fall through */ 5518 5519 case HCI_HALTING_DISCONNECT_ALL: 5520 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5521 if (!hci_can_send_command_packet_now()) return; 5522 5523 // close all open connections 5524 connection = (hci_connection_t *) hci_stack->connections; 5525 if (connection) { 5526 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5527 5528 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5529 5530 // check state 5531 switch(connection->state) { 5532 case SENT_DISCONNECT: 5533 case RECEIVED_DISCONNECTION_COMPLETE: 5534 // wait until connection is gone 5535 return; 5536 default: 5537 break; 5538 } 5539 5540 // finally, send the disconnect command 5541 connection->state = SENT_DISCONNECT; 5542 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5543 return; 5544 } 5545 5546 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5547 // stop BIGs and BIG Syncs 5548 if (hci_stack->le_audio_bigs != NULL){ 5549 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5550 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5551 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5552 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5553 return; 5554 } 5555 if (hci_stack->le_audio_big_syncs != NULL){ 5556 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5557 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5558 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5559 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5560 return; 5561 } 5562 #endif 5563 5564 btstack_run_loop_remove_timer(&hci_stack->timeout); 5565 5566 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5567 log_info("HCI_STATE_HALTING: wait 50 ms"); 5568 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5569 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5570 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5571 btstack_run_loop_add_timer(&hci_stack->timeout); 5572 break; 5573 5574 case HCI_HALTING_W4_CLOSE_TIMER: 5575 // keep waiting 5576 break; 5577 5578 case HCI_HALTING_CLOSE: 5579 // close left over connections (that had not been properly closed before) 5580 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5581 hci_discard_connections(); 5582 5583 log_info("HCI_STATE_HALTING, calling off"); 5584 5585 // switch mode 5586 hci_power_control_off(); 5587 5588 log_info("HCI_STATE_HALTING, emitting state"); 5589 hci_emit_state(); 5590 log_info("HCI_STATE_HALTING, done"); 5591 break; 5592 5593 default: 5594 break; 5595 } 5596 }; 5597 5598 static void hci_falling_asleep_run(void){ 5599 hci_connection_t * connection; 5600 switch(hci_stack->substate) { 5601 case HCI_FALLING_ASLEEP_DISCONNECT: 5602 log_info("HCI_STATE_FALLING_ASLEEP"); 5603 // close all open connections 5604 connection = (hci_connection_t *) hci_stack->connections; 5605 if (connection){ 5606 5607 // send disconnect 5608 if (!hci_can_send_command_packet_now()) return; 5609 5610 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5611 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5612 5613 // send disconnected event right away - causes higher layer connections to get closed, too. 5614 hci_shutdown_connection(connection); 5615 return; 5616 } 5617 5618 if (hci_classic_supported()){ 5619 // disable page and inquiry scan 5620 if (!hci_can_send_command_packet_now()) return; 5621 5622 log_info("HCI_STATE_HALTING, disabling inq scans"); 5623 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5624 5625 // continue in next sub state 5626 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5627 break; 5628 } 5629 5630 /* fall through */ 5631 5632 case HCI_FALLING_ASLEEP_COMPLETE: 5633 log_info("HCI_STATE_HALTING, calling sleep"); 5634 // switch mode 5635 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5636 hci_emit_state(); 5637 break; 5638 5639 default: 5640 break; 5641 } 5642 } 5643 5644 #ifdef ENABLE_CLASSIC 5645 5646 static void hci_update_scan_enable(void){ 5647 // 2 = page scan, 1 = inq scan 5648 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5649 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5650 hci_run(); 5651 } 5652 5653 void gap_discoverable_control(uint8_t enable){ 5654 if (enable) enable = 1; // normalize argument 5655 5656 if (hci_stack->discoverable == enable){ 5657 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5658 return; 5659 } 5660 5661 hci_stack->discoverable = enable; 5662 hci_update_scan_enable(); 5663 } 5664 5665 void gap_connectable_control(uint8_t enable){ 5666 if (enable) enable = 1; // normalize argument 5667 5668 // don't emit event 5669 if (hci_stack->connectable == enable) return; 5670 5671 hci_stack->connectable = enable; 5672 hci_update_scan_enable(); 5673 } 5674 #endif 5675 5676 void gap_local_bd_addr(bd_addr_t address_buffer){ 5677 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5678 } 5679 5680 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5681 static void hci_host_num_completed_packets(void){ 5682 5683 // create packet manually as arrays are not supported and num_commands should not get reduced 5684 hci_reserve_packet_buffer(); 5685 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5686 5687 uint16_t size = 0; 5688 uint16_t num_handles = 0; 5689 packet[size++] = 0x35; 5690 packet[size++] = 0x0c; 5691 size++; // skip param len 5692 size++; // skip num handles 5693 5694 // add { handle, packets } entries 5695 btstack_linked_item_t * it; 5696 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5697 hci_connection_t * connection = (hci_connection_t *) it; 5698 if (connection->num_packets_completed){ 5699 little_endian_store_16(packet, size, connection->con_handle); 5700 size += 2; 5701 little_endian_store_16(packet, size, connection->num_packets_completed); 5702 size += 2; 5703 // 5704 num_handles++; 5705 connection->num_packets_completed = 0; 5706 } 5707 } 5708 5709 packet[2] = size - 3; 5710 packet[3] = num_handles; 5711 5712 hci_stack->host_completed_packets = 0; 5713 5714 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5715 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5716 5717 // release packet buffer for synchronous transport implementations 5718 if (hci_transport_synchronous()){ 5719 hci_release_packet_buffer(); 5720 hci_emit_transport_packet_sent(); 5721 } 5722 } 5723 #endif 5724 5725 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5726 UNUSED(ds); 5727 hci_stack->substate = HCI_HALTING_CLOSE; 5728 hci_halting_run(); 5729 } 5730 5731 static bool hci_run_acl_fragments(void){ 5732 if (hci_stack->acl_fragmentation_total_size > 0u) { 5733 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5734 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5735 if (connection) { 5736 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5737 hci_send_acl_packet_fragments(connection); 5738 return true; 5739 } 5740 } else { 5741 // connection gone -> discard further fragments 5742 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5743 hci_stack->acl_fragmentation_total_size = 0; 5744 hci_stack->acl_fragmentation_pos = 0; 5745 } 5746 } 5747 return false; 5748 } 5749 5750 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5751 static bool hci_run_iso_fragments(void){ 5752 if (hci_stack->iso_fragmentation_total_size > 0u) { 5753 // TODO: flow control 5754 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5755 hci_send_iso_packet_fragments(); 5756 return true; 5757 } 5758 } 5759 return false; 5760 } 5761 #endif 5762 5763 #ifdef ENABLE_CLASSIC 5764 5765 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5766 static bool hci_classic_operation_active(void) { 5767 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5768 return true; 5769 } 5770 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5771 return true; 5772 } 5773 btstack_linked_item_t * it; 5774 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5775 hci_connection_t *connection = (hci_connection_t *) it; 5776 switch (connection->state) { 5777 case SENT_CREATE_CONNECTION: 5778 case SENT_CANCEL_CONNECTION: 5779 case SENT_DISCONNECT: 5780 return true; 5781 default: 5782 break; 5783 } 5784 } 5785 return false; 5786 } 5787 #endif 5788 5789 static bool hci_run_general_gap_classic(void){ 5790 5791 // assert stack is working and classic is active 5792 if (hci_classic_supported() == false) return false; 5793 if (hci_stack->state != HCI_STATE_WORKING) return false; 5794 5795 // decline incoming connections 5796 if (hci_stack->decline_reason){ 5797 uint8_t reason = hci_stack->decline_reason; 5798 hci_stack->decline_reason = 0; 5799 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5800 return true; 5801 } 5802 5803 if (hci_stack->gap_tasks_classic != 0){ 5804 hci_run_gap_tasks_classic(); 5805 return true; 5806 } 5807 5808 // start/stop inquiry 5809 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5810 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5811 if (hci_classic_operation_active() == false) 5812 #endif 5813 { 5814 uint8_t duration = hci_stack->inquiry_state; 5815 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5816 if (hci_stack->inquiry_max_period_length != 0){ 5817 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); 5818 } else { 5819 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5820 } 5821 return true; 5822 } 5823 } 5824 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5825 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5826 hci_send_cmd(&hci_inquiry_cancel); 5827 return true; 5828 } 5829 5830 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5831 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5832 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5833 return true; 5834 } 5835 5836 // remote name request 5837 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5838 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5839 if (hci_classic_operation_active() == false) 5840 #endif 5841 { 5842 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5843 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5844 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5845 return true; 5846 } 5847 } 5848 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5849 // Local OOB data 5850 if (hci_stack->classic_read_local_oob_data){ 5851 hci_stack->classic_read_local_oob_data = false; 5852 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5853 hci_send_cmd(&hci_read_local_extended_oob_data); 5854 } else { 5855 hci_send_cmd(&hci_read_local_oob_data); 5856 } 5857 } 5858 #endif 5859 // pairing 5860 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5861 uint8_t state = hci_stack->gap_pairing_state; 5862 uint8_t pin_code[PIN_CODE_LEN]; 5863 switch (state){ 5864 case GAP_PAIRING_STATE_SEND_PIN: 5865 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5866 memset(pin_code, 0, 16); 5867 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5868 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5869 break; 5870 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5871 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5872 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5873 break; 5874 case GAP_PAIRING_STATE_SEND_PASSKEY: 5875 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5876 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5877 break; 5878 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5879 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5880 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5881 break; 5882 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5883 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5884 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5885 break; 5886 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5887 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5888 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5889 break; 5890 default: 5891 break; 5892 } 5893 return true; 5894 } 5895 return false; 5896 } 5897 #endif 5898 5899 #ifdef ENABLE_BLE 5900 5901 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5902 static uint8_t hci_le_num_phys(uint8_t phys){ 5903 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5904 btstack_assert(phys); 5905 return num_bits_set[phys]; 5906 } 5907 #endif 5908 5909 #ifdef ENABLE_LE_CENTRAL 5910 static void hci_le_scan_stop(void){ 5911 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5912 if (hci_extended_advertising_supported()) { 5913 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5914 } else 5915 #endif 5916 { 5917 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5918 } 5919 } 5920 5921 static void 5922 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5923 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5924 if (hci_extended_advertising_supported()) { 5925 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5926 uint16_t le_connection_scan_interval[3]; 5927 uint16_t le_connection_scan_window[3]; 5928 uint16_t le_connection_interval_min[3]; 5929 uint16_t le_connection_interval_max[3]; 5930 uint16_t le_connection_latency[3]; 5931 uint16_t le_supervision_timeout[3]; 5932 uint16_t le_minimum_ce_length[3]; 5933 uint16_t le_maximum_ce_length[3]; 5934 5935 uint8_t i; 5936 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5937 for (i=0;i<num_phys;i++){ 5938 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5939 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5940 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5941 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5942 le_connection_latency[i] = hci_stack->le_connection_latency; 5943 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5944 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5945 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5946 } 5947 hci_send_cmd(&hci_le_extended_create_connection, 5948 initiator_filter_policy, 5949 hci_stack->le_connection_own_addr_type, // our addr type: 5950 address_type, // peer address type 5951 address, // peer bd addr 5952 hci_stack->le_connection_phys, // initiating PHY 5953 le_connection_scan_interval, // conn scan interval 5954 le_connection_scan_window, // conn scan windows 5955 le_connection_interval_min, // conn interval min 5956 le_connection_interval_max, // conn interval max 5957 le_connection_latency, // conn latency 5958 le_supervision_timeout, // conn latency 5959 le_minimum_ce_length, // min ce length 5960 le_maximum_ce_length // max ce length 5961 ); 5962 } else 5963 #endif 5964 { 5965 hci_send_cmd(&hci_le_create_connection, 5966 hci_stack->le_connection_scan_interval, // conn scan interval 5967 hci_stack->le_connection_scan_window, // conn scan windows 5968 initiator_filter_policy, // don't use whitelist 5969 address_type, // peer address type 5970 address, // peer bd addr 5971 hci_stack->le_connection_own_addr_type, // our addr type: 5972 hci_stack->le_connection_interval_min, // conn interval min 5973 hci_stack->le_connection_interval_max, // conn interval max 5974 hci_stack->le_connection_latency, // conn latency 5975 hci_stack->le_supervision_timeout, // conn latency 5976 hci_stack->le_minimum_ce_length, // min ce length 5977 hci_stack->le_maximum_ce_length // max ce length 5978 ); 5979 } 5980 } 5981 #endif 5982 5983 #ifdef ENABLE_LE_PERIPHERAL 5984 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5985 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5986 uint8_t operation = 0; 5987 if (pos == 0){ 5988 // first fragment or complete data 5989 operation |= 1; 5990 } 5991 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5992 // last fragment or complete data 5993 operation |= 2; 5994 } 5995 return operation; 5996 } 5997 #endif 5998 #endif 5999 6000 static bool hci_run_general_gap_le(void){ 6001 6002 btstack_linked_list_iterator_t lit; 6003 6004 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6005 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6006 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6007 hci_stack->le_resolvable_private_address_update_s = 0; 6008 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6009 return true; 6010 } 6011 #endif 6012 6013 // Phase 1: collect what to stop 6014 6015 #ifdef ENABLE_LE_CENTRAL 6016 bool scanning_stop = false; 6017 bool connecting_stop = false; 6018 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6019 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6020 bool periodic_sync_stop = false; 6021 #endif 6022 #endif 6023 #endif 6024 6025 #ifdef ENABLE_LE_PERIPHERAL 6026 bool advertising_stop = false; 6027 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6028 le_advertising_set_t * advertising_stop_set = NULL; 6029 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6030 bool periodic_advertising_stop = false; 6031 #endif 6032 #endif 6033 #endif 6034 6035 // check if own address changes 6036 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6037 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6038 6039 // check if whitelist needs modification 6040 bool whitelist_modification_pending = false; 6041 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6042 while (btstack_linked_list_iterator_has_next(&lit)){ 6043 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6044 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6045 whitelist_modification_pending = true; 6046 break; 6047 } 6048 } 6049 6050 // check if resolving list needs modification 6051 bool resolving_list_modification_pending = false; 6052 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6053 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6054 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6055 resolving_list_modification_pending = true; 6056 } 6057 #endif 6058 6059 #ifdef ENABLE_LE_CENTRAL 6060 6061 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6062 // check if periodic advertiser list needs modification 6063 bool periodic_list_modification_pending = false; 6064 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6065 while (btstack_linked_list_iterator_has_next(&lit)){ 6066 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6067 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6068 periodic_list_modification_pending = true; 6069 break; 6070 } 6071 } 6072 #endif 6073 6074 // scanning control 6075 if (hci_stack->le_scanning_active) { 6076 // stop if: 6077 // - parameter change required 6078 // - it's disabled 6079 // - whitelist change required but used for scanning 6080 // - resolving list modified 6081 // - own address changes 6082 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6083 if ((hci_stack->le_scanning_param_update) || 6084 !hci_stack->le_scanning_enabled || 6085 (scanning_uses_whitelist && whitelist_modification_pending) || 6086 resolving_list_modification_pending || 6087 random_address_change){ 6088 6089 scanning_stop = true; 6090 } 6091 } 6092 6093 // connecting control 6094 bool connecting_with_whitelist; 6095 switch (hci_stack->le_connecting_state){ 6096 case LE_CONNECTING_DIRECT: 6097 case LE_CONNECTING_WHITELIST: 6098 // stop connecting if: 6099 // - connecting uses white and whitelist modification pending 6100 // - if it got disabled 6101 // - resolving list modified 6102 // - own address changes 6103 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6104 if ((connecting_with_whitelist && whitelist_modification_pending) || 6105 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6106 resolving_list_modification_pending || 6107 random_address_change) { 6108 6109 connecting_stop = true; 6110 } 6111 break; 6112 default: 6113 break; 6114 } 6115 6116 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6117 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6118 // periodic sync control 6119 bool sync_with_advertiser_list; 6120 switch(hci_stack->le_periodic_sync_state){ 6121 case LE_CONNECTING_DIRECT: 6122 case LE_CONNECTING_WHITELIST: 6123 // stop sync if: 6124 // - sync with advertiser list and advertiser list modification pending 6125 // - if it got disabled 6126 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6127 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6128 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6129 periodic_sync_stop = true; 6130 } 6131 break; 6132 default: 6133 break; 6134 } 6135 #endif 6136 #endif 6137 6138 #endif /* ENABLE_LE_CENTRAL */ 6139 6140 #ifdef ENABLE_LE_PERIPHERAL 6141 // le advertisement control 6142 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6143 // stop if: 6144 // - parameter change required 6145 // - random address used in advertising and changes 6146 // - it's disabled 6147 // - whitelist change required but used for advertisement filter policy 6148 // - resolving list modified 6149 // - own address changes 6150 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6151 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6152 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6153 if (advertising_change || 6154 (advertising_uses_random_address && random_address_change) || 6155 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6156 (advertising_uses_whitelist && whitelist_modification_pending) || 6157 resolving_list_modification_pending || 6158 random_address_change) { 6159 6160 advertising_stop = true; 6161 } 6162 } 6163 6164 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6165 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6166 btstack_linked_list_iterator_t it; 6167 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6168 while (btstack_linked_list_iterator_has_next(&it)){ 6169 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6170 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6171 // stop if: 6172 // - parameter change required 6173 // - random address used in connectable advertising and changes 6174 // - it's disabled 6175 // - whitelist change required but used for advertisement filter policy 6176 // - resolving list modified 6177 // - own address changes 6178 // - advertisement set will be removed 6179 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6180 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6181 bool advertising_uses_random_address = 6182 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6183 advertising_connectable; 6184 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6185 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6186 bool advertising_set_random_address_change = 6187 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6188 bool advertising_set_will_be_removed = 6189 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6190 if (advertising_parameter_change || 6191 (advertising_uses_random_address && advertising_set_random_address_change) || 6192 (advertising_enabled == false) || 6193 (advertising_uses_whitelist && whitelist_modification_pending) || 6194 resolving_list_modification_pending || 6195 advertising_set_will_be_removed) { 6196 6197 advertising_stop = true; 6198 advertising_stop_set = advertising_set; 6199 break; 6200 } 6201 } 6202 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6203 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6204 // stop if: 6205 // - it's disabled 6206 // - parameter change required 6207 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6208 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6209 if ((periodic_enabled == false) || periodic_parameter_change){ 6210 periodic_advertising_stop = true; 6211 advertising_stop_set = advertising_set; 6212 } 6213 } 6214 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6215 } 6216 } 6217 #endif 6218 6219 #endif 6220 6221 6222 // Phase 2: stop everything that should be off during modifications 6223 6224 6225 // 2.1 Outgoing connection 6226 #ifdef ENABLE_LE_CENTRAL 6227 if (connecting_stop){ 6228 hci_send_cmd(&hci_le_create_connection_cancel); 6229 return true; 6230 } 6231 #endif 6232 6233 // 2.2 Scanning 6234 #ifdef ENABLE_LE_CENTRAL 6235 if (scanning_stop){ 6236 hci_stack->le_scanning_active = false; 6237 hci_le_scan_stop(); 6238 return true; 6239 } 6240 6241 // 2.3 Periodic Sync 6242 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6243 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6244 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6245 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6246 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6247 return true; 6248 } 6249 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6250 if (periodic_sync_stop){ 6251 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6252 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6253 return true; 6254 } 6255 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6256 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6257 #endif /* ENABLE_LE_CENTRAL */ 6258 6259 // 2.4 Advertising: legacy, extended, periodic 6260 #ifdef ENABLE_LE_PERIPHERAL 6261 if (advertising_stop){ 6262 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6263 if (hci_extended_advertising_supported()) { 6264 uint8_t advertising_stop_handle; 6265 if (advertising_stop_set != NULL){ 6266 advertising_stop_handle = advertising_stop_set->advertising_handle; 6267 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6268 } else { 6269 advertising_stop_handle = 0; 6270 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6271 } 6272 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6273 const uint16_t durations[] = { 0 }; 6274 const uint16_t max_events[] = { 0 }; 6275 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6276 } else 6277 #endif 6278 { 6279 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6280 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6281 } 6282 return true; 6283 } 6284 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6285 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6286 if (periodic_advertising_stop){ 6287 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6288 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6289 return true; 6290 } 6291 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6292 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6293 #endif /* ENABLE_LE_PERIPHERAL */ 6294 6295 6296 // Phase 3: modify 6297 6298 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6299 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6300 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6301 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6302 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6303 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6304 #endif 6305 return true; 6306 } 6307 6308 #ifdef ENABLE_LE_CENTRAL 6309 if (hci_stack->le_scanning_param_update){ 6310 hci_stack->le_scanning_param_update = false; 6311 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6312 if (hci_extended_advertising_supported()){ 6313 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6314 uint8_t scan_types[2]; 6315 uint16_t scan_intervals[2]; 6316 uint16_t scan_windows[2]; 6317 6318 uint8_t i; 6319 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6320 for (i=0;i<num_phys;i++){ 6321 scan_types[i] = hci_stack->le_scan_type; 6322 scan_intervals[i] = hci_stack->le_scan_interval; 6323 scan_windows[i] = hci_stack->le_scan_window; 6324 } 6325 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6326 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6327 } else 6328 #endif 6329 { 6330 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6331 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6332 } 6333 return true; 6334 } 6335 #endif 6336 6337 #ifdef ENABLE_LE_PERIPHERAL 6338 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6339 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6340 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6341 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6342 if (hci_extended_advertising_supported()){ 6343 // map advertisment type to advertising event properties 6344 uint16_t adv_event_properties = 0; 6345 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6346 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6347 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6348 } 6349 hci_stack->le_advertising_set_in_current_command = 0; 6350 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6351 0, 6352 adv_event_properties, 6353 hci_stack->le_advertisements_interval_min, 6354 hci_stack->le_advertisements_interval_max, 6355 hci_stack->le_advertisements_channel_map, 6356 hci_stack->le_advertisements_own_addr_type, 6357 hci_stack->le_advertisements_direct_address_type, 6358 hci_stack->le_advertisements_direct_address, 6359 hci_stack->le_advertisements_filter_policy, 6360 0x7f, // tx power: no preference 6361 0x01, // primary adv phy: LE 1M 6362 0, // secondary adv max skip 6363 0x01, // secondary adv phy 6364 0, // adv sid 6365 0 // scan request notification 6366 ); 6367 } else 6368 #endif 6369 { 6370 hci_send_cmd(&hci_le_set_advertising_parameters, 6371 hci_stack->le_advertisements_interval_min, 6372 hci_stack->le_advertisements_interval_max, 6373 hci_stack->le_advertisements_type, 6374 hci_stack->le_advertisements_own_addr_type, 6375 hci_stack->le_advertisements_direct_address_type, 6376 hci_stack->le_advertisements_direct_address, 6377 hci_stack->le_advertisements_channel_map, 6378 hci_stack->le_advertisements_filter_policy); 6379 } 6380 return true; 6381 } 6382 6383 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6384 // assumption: only set if extended advertising is supported 6385 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6386 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6387 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6388 return true; 6389 } 6390 #endif 6391 6392 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6393 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6394 uint8_t adv_data_clean[31]; 6395 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6396 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6397 hci_stack->le_advertisements_data_len); 6398 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6399 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6400 if (hci_extended_advertising_supported()){ 6401 hci_stack->le_advertising_set_in_current_command = 0; 6402 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6403 } else 6404 #endif 6405 { 6406 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6407 } 6408 return true; 6409 } 6410 6411 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6412 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6413 uint8_t scan_data_clean[31]; 6414 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6415 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6416 hci_stack->le_scan_response_data_len); 6417 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6418 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6419 if (hci_extended_advertising_supported()){ 6420 hci_stack->le_advertising_set_in_current_command = 0; 6421 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6422 } else 6423 #endif 6424 { 6425 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6426 } 6427 return true; 6428 } 6429 6430 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6431 if (hci_extended_advertising_supported()) { 6432 btstack_linked_list_iterator_t it; 6433 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6434 while (btstack_linked_list_iterator_has_next(&it)){ 6435 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6436 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6437 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6438 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6439 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6440 return true; 6441 } 6442 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6443 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6444 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6445 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6446 advertising_set->advertising_handle, 6447 advertising_set->extended_params.advertising_event_properties, 6448 advertising_set->extended_params.primary_advertising_interval_min, 6449 advertising_set->extended_params.primary_advertising_interval_max, 6450 advertising_set->extended_params.primary_advertising_channel_map, 6451 advertising_set->extended_params.own_address_type, 6452 advertising_set->extended_params.peer_address_type, 6453 advertising_set->extended_params.peer_address, 6454 advertising_set->extended_params.advertising_filter_policy, 6455 advertising_set->extended_params.advertising_tx_power, 6456 advertising_set->extended_params.primary_advertising_phy, 6457 advertising_set->extended_params.secondary_advertising_max_skip, 6458 advertising_set->extended_params.secondary_advertising_phy, 6459 advertising_set->extended_params.advertising_sid, 6460 advertising_set->extended_params.scan_request_notification_enable 6461 ); 6462 return true; 6463 } 6464 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6465 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6466 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6467 return true; 6468 } 6469 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6470 uint16_t pos = advertising_set->adv_data_pos; 6471 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6472 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6473 if ((operation & 0x02) != 0){ 6474 // last fragment or complete data 6475 operation |= 2; 6476 advertising_set->adv_data_pos = 0; 6477 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6478 } else { 6479 advertising_set->adv_data_pos += data_to_upload; 6480 } 6481 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6482 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6483 return true; 6484 } 6485 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6486 uint16_t pos = advertising_set->scan_data_pos; 6487 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6488 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6489 if ((operation & 0x02) != 0){ 6490 advertising_set->scan_data_pos = 0; 6491 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6492 } else { 6493 advertising_set->scan_data_pos += data_to_upload; 6494 } 6495 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6496 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6497 return true; 6498 } 6499 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6500 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6501 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6502 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6503 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6504 advertising_set->advertising_handle, 6505 advertising_set->periodic_params.periodic_advertising_interval_min, 6506 advertising_set->periodic_params.periodic_advertising_interval_max, 6507 advertising_set->periodic_params.periodic_advertising_properties); 6508 return true; 6509 } 6510 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6511 uint16_t pos = advertising_set->periodic_data_pos; 6512 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6513 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6514 if ((operation & 0x02) != 0){ 6515 // last fragment or complete data 6516 operation |= 2; 6517 advertising_set->periodic_data_pos = 0; 6518 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6519 } else { 6520 advertising_set->periodic_data_pos += data_to_upload; 6521 } 6522 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6523 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6524 return true; 6525 } 6526 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6527 } 6528 } 6529 #endif 6530 6531 #endif 6532 6533 #ifdef ENABLE_LE_CENTRAL 6534 // if connect with whitelist was active and is not cancelled yet, wait until next time 6535 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6536 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6537 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6538 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6539 #endif 6540 #endif 6541 6542 // LE Whitelist Management 6543 if (whitelist_modification_pending){ 6544 // add/remove entries 6545 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6546 while (btstack_linked_list_iterator_has_next(&lit)){ 6547 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6548 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6549 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6550 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6551 bd_addr_type_t address_type = entry->address_type; 6552 bd_addr_t address; 6553 memcpy(address, entry->address, 6); 6554 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6555 // remove from whitelist if not scheduled for re-addition 6556 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6557 btstack_memory_whitelist_entry_free(entry); 6558 } 6559 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6560 return true; 6561 } 6562 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6563 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6564 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6565 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6566 return true; 6567 } 6568 } 6569 } 6570 6571 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6572 // LE Resolving List Management 6573 if (resolving_list_supported) { 6574 uint16_t i; 6575 switch (hci_stack->le_resolving_list_state) { 6576 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6577 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6578 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6579 return true; 6580 case LE_RESOLVING_LIST_READ_SIZE: 6581 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6582 hci_send_cmd(&hci_le_read_resolving_list_size); 6583 return true; 6584 case LE_RESOLVING_LIST_SEND_CLEAR: 6585 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6586 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6587 sizeof(hci_stack->le_resolving_list_add_entries)); 6588 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6589 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6590 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6591 sizeof(hci_stack->le_resolving_list_remove_entries)); 6592 hci_send_cmd(&hci_le_clear_resolving_list); 6593 return true; 6594 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6595 // first remove old entries 6596 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6597 uint8_t offset = i >> 3; 6598 uint8_t mask = 1 << (i & 7); 6599 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6600 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6601 bd_addr_t peer_identity_addreses; 6602 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6603 sm_key_t peer_irk; 6604 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6605 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6606 6607 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6608 // trigger whitelist entry 'update' (work around for controller bug) 6609 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6610 while (btstack_linked_list_iterator_has_next(&lit)) { 6611 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6612 if (entry->address_type != peer_identity_addr_type) continue; 6613 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6614 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6615 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6616 } 6617 #endif 6618 6619 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6620 peer_identity_addreses); 6621 return true; 6622 } 6623 6624 // then add new entries 6625 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6626 uint8_t offset = i >> 3; 6627 uint8_t mask = 1 << (i & 7); 6628 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6629 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6630 bd_addr_t peer_identity_addreses; 6631 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6632 sm_key_t peer_irk; 6633 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6634 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6635 if (btstack_is_null(peer_irk, 16)) continue; 6636 const uint8_t *local_irk = gap_get_persistent_irk(); 6637 // command uses format specifier 'P' that stores 16-byte value without flip 6638 uint8_t local_irk_flipped[16]; 6639 uint8_t peer_irk_flipped[16]; 6640 reverse_128(local_irk, local_irk_flipped); 6641 reverse_128(peer_irk, peer_irk_flipped); 6642 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6643 peer_irk_flipped, local_irk_flipped); 6644 return true; 6645 } 6646 6647 // finally, set privacy mode 6648 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6649 uint8_t offset = i >> 3; 6650 uint8_t mask = 1 << (i & 7); 6651 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6652 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6653 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6654 // Network Privacy Mode is default 6655 continue; 6656 } 6657 bd_addr_t peer_identity_address; 6658 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6659 sm_key_t peer_irk; 6660 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6661 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6662 if (btstack_is_null(peer_irk, 16)) continue; 6663 // command uses format specifier 'P' that stores 16-byte value without flip 6664 uint8_t peer_irk_flipped[16]; 6665 reverse_128(peer_irk, peer_irk_flipped); 6666 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6667 return true; 6668 } 6669 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6670 break; 6671 6672 default: 6673 break; 6674 } 6675 } 6676 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6677 #endif 6678 6679 #ifdef ENABLE_LE_CENTRAL 6680 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6681 // LE Whitelist Management 6682 if (periodic_list_modification_pending){ 6683 // add/remove entries 6684 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6685 while (btstack_linked_list_iterator_has_next(&lit)){ 6686 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6687 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6688 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6689 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6690 return true; 6691 } 6692 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6693 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6694 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6695 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6696 return true; 6697 } 6698 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6699 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6700 btstack_memory_periodic_advertiser_list_entry_free(entry); 6701 } 6702 } 6703 } 6704 #endif 6705 #endif 6706 6707 #ifdef ENABLE_LE_CENTRAL 6708 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6709 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6710 if (hci_stack->le_past_set_default_params){ 6711 hci_stack->le_past_set_default_params = false; 6712 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6713 hci_stack->le_past_mode, 6714 hci_stack->le_past_skip, 6715 hci_stack->le_past_sync_timeout, 6716 hci_stack->le_past_cte_type); 6717 return true; 6718 } 6719 #endif 6720 #endif 6721 #endif 6722 6723 // post-pone all actions until stack is fully working 6724 if (hci_stack->state != HCI_STATE_WORKING) return false; 6725 6726 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6727 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6728 6729 // Phase 4: restore state 6730 6731 #ifdef ENABLE_LE_CENTRAL 6732 // re-start scanning 6733 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6734 hci_stack->le_scanning_active = true; 6735 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6736 if (hci_extended_advertising_supported()){ 6737 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6738 } else 6739 #endif 6740 { 6741 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6742 } 6743 return true; 6744 } 6745 #endif 6746 6747 #ifdef ENABLE_LE_CENTRAL 6748 // re-start connecting 6749 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6750 bd_addr_t null_addr; 6751 memset(null_addr, 0, 6); 6752 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6753 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6754 hci_send_le_create_connection(1, 0, null_addr); 6755 return true; 6756 } 6757 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6758 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6759 switch(hci_stack->le_periodic_sync_request){ 6760 case LE_CONNECTING_DIRECT: 6761 case LE_CONNECTING_WHITELIST: 6762 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6763 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6764 hci_stack->le_periodic_sync_options, 6765 hci_stack->le_periodic_sync_advertising_sid, 6766 hci_stack->le_periodic_sync_advertiser_address_type, 6767 hci_stack->le_periodic_sync_advertiser_address, 6768 hci_stack->le_periodic_sync_skip, 6769 hci_stack->le_periodic_sync_timeout, 6770 hci_stack->le_periodic_sync_cte_type); 6771 return true; 6772 default: 6773 break; 6774 } 6775 } 6776 #endif 6777 #endif 6778 6779 #ifdef ENABLE_LE_PERIPHERAL 6780 // re-start advertising 6781 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6782 // check if advertisements should be enabled given 6783 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6784 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6785 6786 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6787 if (hci_extended_advertising_supported()){ 6788 const uint8_t advertising_handles[] = { 0 }; 6789 const uint16_t durations[] = { 0 }; 6790 const uint16_t max_events[] = { 0 }; 6791 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6792 } else 6793 #endif 6794 { 6795 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6796 } 6797 return true; 6798 } 6799 6800 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6801 if (hci_extended_advertising_supported()) { 6802 btstack_linked_list_iterator_t it; 6803 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6804 while (btstack_linked_list_iterator_has_next(&it)) { 6805 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6806 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6807 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6808 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6809 const uint16_t durations[] = { advertising_set->enable_timeout }; 6810 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6811 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6812 return true; 6813 } 6814 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6815 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6816 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6817 uint8_t enable = 1; 6818 if (advertising_set->periodic_include_adi){ 6819 enable |= 2; 6820 } 6821 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6822 return true; 6823 } 6824 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6825 } 6826 } 6827 #endif 6828 #endif 6829 6830 return false; 6831 } 6832 6833 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6834 static bool hci_run_iso_tasks(void){ 6835 btstack_linked_list_iterator_t it; 6836 6837 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6838 return false; 6839 } 6840 6841 // BIG 6842 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6843 while (btstack_linked_list_iterator_has_next(&it)){ 6844 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6845 switch (big->state){ 6846 case LE_AUDIO_BIG_STATE_CREATE: 6847 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6848 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6849 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6850 hci_send_cmd(&hci_le_create_big, 6851 big->params->big_handle, 6852 big->params->advertising_handle, 6853 big->params->num_bis, 6854 big->params->sdu_interval_us, 6855 big->params->max_sdu, 6856 big->params->max_transport_latency_ms, 6857 big->params->rtn, 6858 big->params->phy, 6859 big->params->packing, 6860 big->params->framing, 6861 big->params->encryption, 6862 big->params->broadcast_code); 6863 return true; 6864 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6865 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6866 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); 6867 return true; 6868 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6869 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6870 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6871 return true; 6872 case LE_AUDIO_BIG_STATE_TERMINATE: 6873 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6874 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6875 return true; 6876 default: 6877 break; 6878 } 6879 } 6880 6881 // BIG Sync 6882 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6883 while (btstack_linked_list_iterator_has_next(&it)){ 6884 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6885 switch (big_sync->state){ 6886 case LE_AUDIO_BIG_STATE_CREATE: 6887 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6888 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6889 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6890 hci_send_cmd(&hci_le_big_create_sync, 6891 big_sync->params->big_handle, 6892 big_sync->params->sync_handle, 6893 big_sync->params->encryption, 6894 big_sync->params->broadcast_code, 6895 big_sync->params->mse, 6896 big_sync->params->big_sync_timeout_10ms, 6897 big_sync->params->num_bis, 6898 big_sync->params->bis_indices); 6899 return true; 6900 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6901 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6902 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); 6903 return true; 6904 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6905 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6906 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6907 return true; 6908 case LE_AUDIO_BIG_STATE_TERMINATE: 6909 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6910 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6911 return true; 6912 default: 6913 break; 6914 } 6915 } 6916 6917 // CIG 6918 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6919 while (btstack_linked_list_iterator_has_next(&it)) { 6920 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6921 uint8_t i; 6922 // Set CIG Parameters 6923 uint8_t cis_id[MAX_NR_CIS]; 6924 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6925 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6926 uint8_t phy_c_to_p[MAX_NR_CIS]; 6927 uint8_t phy_p_to_c[MAX_NR_CIS]; 6928 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6929 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6930 switch (cig->state) { 6931 case LE_AUDIO_CIG_STATE_CREATE: 6932 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6933 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6934 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6935 le_audio_cig_params_t * params = cig->params; 6936 for (i = 0; i < params->num_cis; i++) { 6937 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6938 cis_id[i] = cis_params->cis_id; 6939 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6940 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6941 phy_c_to_p[i] = cis_params->phy_c_to_p; 6942 phy_p_to_c[i] = cis_params->phy_p_to_c; 6943 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6944 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6945 } 6946 hci_send_cmd(&hci_le_set_cig_parameters, 6947 cig->cig_id, 6948 params->sdu_interval_c_to_p, 6949 params->sdu_interval_p_to_c, 6950 params->worst_case_sca, 6951 params->packing, 6952 params->framing, 6953 params->max_transport_latency_c_to_p, 6954 params->max_transport_latency_p_to_c, 6955 params->num_cis, 6956 cis_id, 6957 max_sdu_c_to_p, 6958 max_sdu_p_to_c, 6959 phy_c_to_p, 6960 phy_p_to_c, 6961 rtn_c_to_p, 6962 rtn_p_to_c 6963 ); 6964 return true; 6965 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6966 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6967 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6968 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6969 for (i=0;i<cig->num_cis;i++){ 6970 cig->cis_setup_active[i] = true; 6971 } 6972 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6973 return true; 6974 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6975 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6976 // find next path to setup 6977 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6978 if (cig->cis_established[cis_index] == false) { 6979 continue; 6980 } 6981 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6982 bool setup = true; 6983 if (cis_direction == 0){ 6984 // 0 - input - host to controller 6985 // we are central => central to peripheral 6986 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6987 } else { 6988 // 1 - output - controller to host 6989 // we are central => peripheral to central 6990 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6991 } 6992 if (setup){ 6993 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6994 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6995 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6996 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); 6997 return true; 6998 } 6999 cig->state_vars.next_cis++; 7000 } 7001 // emit done 7002 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7003 default: 7004 break; 7005 } 7006 } 7007 7008 // CIS Accept/Reject 7009 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7010 while (btstack_linked_list_iterator_has_next(&it)) { 7011 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7012 hci_con_handle_t con_handle; 7013 switch (iso_stream->state){ 7014 case HCI_ISO_STREAM_W2_ACCEPT: 7015 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7016 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7017 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7018 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7019 return true; 7020 case HCI_ISO_STREAM_W2_REJECT: 7021 con_handle = iso_stream->cis_handle; 7022 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7023 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7024 hci_iso_stream_finalize(iso_stream); 7025 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7026 return true; 7027 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7028 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7029 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7030 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7031 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); 7032 break; 7033 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7034 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7035 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7036 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7037 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); 7038 break; 7039 default: 7040 break; 7041 } 7042 } 7043 7044 return false; 7045 } 7046 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7047 #endif 7048 7049 static bool hci_run_general_pending_commands(void){ 7050 btstack_linked_item_t * it; 7051 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7052 hci_connection_t * connection = (hci_connection_t *) it; 7053 7054 switch(connection->state){ 7055 case SEND_CREATE_CONNECTION: 7056 switch(connection->address_type){ 7057 #ifdef ENABLE_CLASSIC 7058 case BD_ADDR_TYPE_ACL: 7059 log_info("sending hci_create_connection"); 7060 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7061 break; 7062 #endif 7063 default: 7064 #ifdef ENABLE_BLE 7065 #ifdef ENABLE_LE_CENTRAL 7066 log_info("sending hci_le_create_connection"); 7067 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7068 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7069 hci_send_le_create_connection(0, connection->address_type, connection->address); 7070 connection->state = SENT_CREATE_CONNECTION; 7071 #endif 7072 #endif 7073 break; 7074 } 7075 return true; 7076 7077 #ifdef ENABLE_CLASSIC 7078 case RECEIVED_CONNECTION_REQUEST: 7079 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7080 log_info("sending hci_accept_connection_request"); 7081 connection->state = ACCEPTED_CONNECTION_REQUEST; 7082 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7083 return true; 7084 } 7085 break; 7086 #endif 7087 case SEND_DISCONNECT: 7088 connection->state = SENT_DISCONNECT; 7089 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7090 return true; 7091 7092 default: 7093 break; 7094 } 7095 7096 // no further commands if connection is about to get shut down 7097 if (connection->state == SENT_DISCONNECT) continue; 7098 7099 #ifdef ENABLE_CLASSIC 7100 7101 // Handling link key request requires remote supported features 7102 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7103 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7104 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7105 7106 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7107 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7108 if (have_link_key && security_level_sufficient){ 7109 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7110 } else { 7111 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7112 } 7113 return true; 7114 } 7115 7116 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7117 log_info("denying to pin request"); 7118 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7119 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7120 return true; 7121 } 7122 7123 // security assessment requires remote features 7124 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7125 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7126 hci_ssp_assess_security_on_io_cap_request(connection); 7127 // 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 7128 } 7129 7130 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7131 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7132 // set authentication requirements: 7133 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7134 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7135 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7136 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7137 authreq |= 1; 7138 } 7139 bool bonding = hci_stack->bondable; 7140 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7141 // if we have received IO Cap Response, we're in responder role 7142 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7143 if (bonding && !remote_bonding){ 7144 log_info("Remote not bonding, dropping local flag"); 7145 bonding = false; 7146 } 7147 } 7148 if (bonding){ 7149 if (connection->bonding_flags & BONDING_DEDICATED){ 7150 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7151 } else { 7152 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7153 } 7154 } 7155 uint8_t have_oob_data = 0; 7156 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7157 if (connection->classic_oob_c_192 != NULL){ 7158 have_oob_data |= 1; 7159 } 7160 if (connection->classic_oob_c_256 != NULL){ 7161 have_oob_data |= 2; 7162 } 7163 #endif 7164 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7165 return true; 7166 } 7167 7168 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7169 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7170 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7171 return true; 7172 } 7173 7174 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7175 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7176 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7177 const uint8_t zero[16] = { 0 }; 7178 const uint8_t * r_192 = zero; 7179 const uint8_t * c_192 = zero; 7180 const uint8_t * r_256 = zero; 7181 const uint8_t * c_256 = zero; 7182 // verify P-256 OOB 7183 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7184 c_256 = connection->classic_oob_c_256; 7185 if (connection->classic_oob_r_256 != NULL) { 7186 r_256 = connection->classic_oob_r_256; 7187 } 7188 } 7189 // verify P-192 OOB 7190 if ((connection->classic_oob_c_192 != NULL)) { 7191 c_192 = connection->classic_oob_c_192; 7192 if (connection->classic_oob_r_192 != NULL) { 7193 r_192 = connection->classic_oob_r_192; 7194 } 7195 } 7196 7197 // assess security 7198 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7199 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7200 if (need_level_4 && !can_reach_level_4){ 7201 log_info("Level 4 required, but not possible -> abort"); 7202 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7203 // send oob negative reply 7204 c_256 = NULL; 7205 c_192 = NULL; 7206 } 7207 7208 // Reply 7209 if (c_256 != zero) { 7210 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7211 } else if (c_192 != zero){ 7212 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7213 } else { 7214 hci_stack->classic_oob_con_handle = connection->con_handle; 7215 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7216 } 7217 return true; 7218 } 7219 #endif 7220 7221 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7222 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7223 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7224 return true; 7225 } 7226 7227 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7228 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7229 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7230 return true; 7231 } 7232 7233 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7234 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7235 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7236 return true; 7237 } 7238 7239 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7240 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7241 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7242 connection->state = SENT_DISCONNECT; 7243 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7244 return true; 7245 } 7246 7247 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7248 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7249 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7250 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7251 return true; 7252 } 7253 7254 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7255 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7256 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7257 return true; 7258 } 7259 7260 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7261 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7262 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7263 return true; 7264 } 7265 7266 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7267 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7268 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7269 return true; 7270 } 7271 7272 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7273 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7274 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7275 return true; 7276 } 7277 7278 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7279 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7280 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7281 return true; 7282 } 7283 #endif 7284 7285 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7286 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7287 #ifdef ENABLE_CLASSIC 7288 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7289 #endif 7290 if (connection->state != SENT_DISCONNECT){ 7291 connection->state = SENT_DISCONNECT; 7292 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7293 return true; 7294 } 7295 } 7296 7297 #ifdef ENABLE_CLASSIC 7298 uint16_t sniff_min_interval; 7299 switch (connection->sniff_min_interval){ 7300 case 0: 7301 break; 7302 case 0xffff: 7303 connection->sniff_min_interval = 0; 7304 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7305 return true; 7306 default: 7307 sniff_min_interval = connection->sniff_min_interval; 7308 connection->sniff_min_interval = 0; 7309 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7310 return true; 7311 } 7312 7313 if (connection->sniff_subrating_max_latency != 0xffff){ 7314 uint16_t max_latency = connection->sniff_subrating_max_latency; 7315 connection->sniff_subrating_max_latency = 0; 7316 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7317 return true; 7318 } 7319 7320 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7321 uint8_t service_type = (uint8_t) connection->qos_service_type; 7322 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7323 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); 7324 return true; 7325 } 7326 7327 if (connection->request_role != HCI_ROLE_INVALID){ 7328 hci_role_t role = connection->request_role; 7329 connection->request_role = HCI_ROLE_INVALID; 7330 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7331 return true; 7332 } 7333 #endif 7334 7335 if (connection->gap_connection_tasks != 0){ 7336 #ifdef ENABLE_CLASSIC 7337 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7338 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7339 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7340 return true; 7341 } 7342 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7343 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7344 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7345 return true; 7346 } 7347 #endif 7348 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7349 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7350 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7351 return true; 7352 } 7353 #ifdef ENABLE_BLE 7354 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7355 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7356 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7357 return true; 7358 } 7359 #endif 7360 } 7361 7362 #ifdef ENABLE_BLE 7363 switch (connection->le_con_parameter_update_state){ 7364 // response to L2CAP CON PARAMETER UPDATE REQUEST 7365 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7366 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7367 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7368 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7369 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7370 return true; 7371 case CON_PARAMETER_UPDATE_REPLY: 7372 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7373 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7374 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7375 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7376 return true; 7377 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7378 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7379 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7380 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7381 return true; 7382 default: 7383 break; 7384 } 7385 if (connection->le_phy_update_all_phys != 0xffu){ 7386 uint8_t all_phys = connection->le_phy_update_all_phys; 7387 connection->le_phy_update_all_phys = 0xff; 7388 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); 7389 return true; 7390 } 7391 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7392 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7393 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7394 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7395 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7396 return true; 7397 } 7398 if (connection->le_past_advertising_handle != 0xff){ 7399 uint8_t advertising_handle = connection->le_past_advertising_handle; 7400 connection->le_past_advertising_handle = 0xff; 7401 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7402 return true; 7403 } 7404 #endif 7405 #endif 7406 } 7407 return false; 7408 } 7409 7410 static void hci_run(void){ 7411 7412 // stack state sub statemachines 7413 switch (hci_stack->state) { 7414 case HCI_STATE_INITIALIZING: 7415 hci_initializing_run(); 7416 break; 7417 case HCI_STATE_HALTING: 7418 hci_halting_run(); 7419 break; 7420 case HCI_STATE_FALLING_ASLEEP: 7421 hci_falling_asleep_run(); 7422 break; 7423 default: 7424 break; 7425 } 7426 7427 // allow to run after initialization to working transition 7428 if (hci_stack->state != HCI_STATE_WORKING){ 7429 return; 7430 } 7431 7432 bool done; 7433 7434 // send continuation fragments first, as they block the prepared packet buffer 7435 done = hci_run_acl_fragments(); 7436 if (done) return; 7437 7438 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7439 done = hci_run_iso_fragments(); 7440 if (done) return; 7441 #endif 7442 7443 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7444 // send host num completed packets next as they don't require num_cmd_packets > 0 7445 if (!hci_can_send_comand_packet_transport()) return; 7446 if (hci_stack->host_completed_packets){ 7447 hci_host_num_completed_packets(); 7448 return; 7449 } 7450 #endif 7451 7452 if (!hci_can_send_command_packet_now()) return; 7453 7454 // global/non-connection oriented commands 7455 7456 7457 #ifdef ENABLE_CLASSIC 7458 // general gap classic 7459 done = hci_run_general_gap_classic(); 7460 if (done) return; 7461 #endif 7462 7463 #ifdef ENABLE_BLE 7464 // general gap le 7465 done = hci_run_general_gap_le(); 7466 if (done) return; 7467 7468 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7469 // ISO related tasks, e.g. BIG create/terminate/sync 7470 done = hci_run_iso_tasks(); 7471 if (done) return; 7472 #endif 7473 #endif 7474 7475 // send pending HCI commands 7476 hci_run_general_pending_commands(); 7477 } 7478 7479 #ifdef ENABLE_CLASSIC 7480 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7481 // bits 6-9 are 'don't use' 7482 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7483 7484 // restrict packet types to local and remote supported 7485 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7486 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7487 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7488 } 7489 #endif 7490 7491 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7492 // house-keeping 7493 7494 #ifdef ENABLE_CLASSIC 7495 bd_addr_t addr; 7496 hci_connection_t * conn; 7497 #endif 7498 #ifdef ENABLE_LE_CENTRAL 7499 uint8_t initiator_filter_policy; 7500 #endif 7501 7502 uint16_t opcode = little_endian_read_16(packet, 0); 7503 switch (opcode) { 7504 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7505 hci_stack->loopback_mode = packet[3]; 7506 break; 7507 7508 #ifdef ENABLE_CLASSIC 7509 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7510 reverse_bd_addr(&packet[3], addr); 7511 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7512 7513 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7514 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7515 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7516 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7517 } 7518 7519 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7520 if (!conn) { 7521 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7522 if (!conn) { 7523 // notify client that alloc failed 7524 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7525 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7526 } 7527 conn->state = SEND_CREATE_CONNECTION; 7528 } 7529 7530 log_info("conn state %u", conn->state); 7531 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7532 switch (conn->state) { 7533 // if connection active exists 7534 case OPEN: 7535 // and OPEN, emit connection complete command 7536 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7537 // packet not sent to controller 7538 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7539 case RECEIVED_DISCONNECTION_COMPLETE: 7540 // create connection triggered in disconnect complete event, let's do it now 7541 break; 7542 case SEND_CREATE_CONNECTION: 7543 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7544 if (hci_classic_operation_active()){ 7545 return ERROR_CODE_SUCCESS; 7546 } 7547 #endif 7548 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7549 break; 7550 default: 7551 // otherwise, just ignore as it is already in the open process 7552 // packet not sent to controller 7553 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7554 } 7555 conn->state = SENT_CREATE_CONNECTION; 7556 7557 // track outgoing connection 7558 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7559 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7560 break; 7561 7562 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7563 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7564 if (conn == NULL) { 7565 // neither SCO nor ACL connection for con handle 7566 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7567 } else { 7568 uint16_t remote_supported_sco_packets; 7569 switch (conn->address_type){ 7570 case BD_ADDR_TYPE_ACL: 7571 // assert SCO connection does not exit 7572 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7573 return ERROR_CODE_COMMAND_DISALLOWED; 7574 } 7575 // cache remote sco packet types 7576 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7577 7578 // allocate connection struct 7579 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7580 HCI_ROLE_MASTER); 7581 if (!conn) { 7582 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7583 } 7584 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7585 break; 7586 case BD_ADDR_TYPE_SCO: 7587 // update of existing SCO connection 7588 break; 7589 default: 7590 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7591 } 7592 } 7593 7594 // conn refers to hci connection of type sco now 7595 7596 conn->state = SENT_CREATE_CONNECTION; 7597 7598 // track outgoing connection to handle command status with error 7599 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7600 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7601 7602 // setup_synchronous_connection? Voice setting at offset 22 7603 // TODO: compare to current setting if sco connection already active 7604 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7605 7606 // derive sco payload length from packet types 7607 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7608 break; 7609 7610 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7611 // get SCO connection 7612 reverse_bd_addr(&packet[3], addr); 7613 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7614 if (conn == NULL){ 7615 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7616 } 7617 7618 conn->state = ACCEPTED_CONNECTION_REQUEST; 7619 7620 // track outgoing connection to handle command status with error 7621 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7622 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7623 7624 // accept_synchronous_connection? Voice setting at offset 18 7625 // TODO: compare to current setting if sco connection already active 7626 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7627 7628 // derive sco payload length from packet types 7629 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7630 break; 7631 #endif 7632 7633 #ifdef ENABLE_BLE 7634 #ifdef ENABLE_LE_CENTRAL 7635 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7636 // white list used? 7637 initiator_filter_policy = packet[7]; 7638 switch (initiator_filter_policy) { 7639 case 0: 7640 // whitelist not used 7641 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7642 break; 7643 case 1: 7644 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7645 break; 7646 default: 7647 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7648 break; 7649 } 7650 // track outgoing connection 7651 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7652 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7653 break; 7654 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7655 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7656 // white list used? 7657 initiator_filter_policy = packet[3]; 7658 switch (initiator_filter_policy) { 7659 case 0: 7660 // whitelist not used 7661 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7662 break; 7663 case 1: 7664 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7665 break; 7666 default: 7667 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7668 break; 7669 } 7670 // track outgoing connection 7671 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7672 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7673 break; 7674 #endif 7675 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7676 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7677 break; 7678 #endif 7679 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7680 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7681 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7682 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7683 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7684 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7685 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7686 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7687 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7688 case HCI_OPCODE_HCI_LE_READ_PHY: 7689 case HCI_OPCODE_HCI_LE_SET_PHY: 7690 // conection handle is first command parameter 7691 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7692 break; 7693 #endif 7694 #endif /* ENABLE_BLE */ 7695 default: 7696 break; 7697 } 7698 7699 hci_stack->num_cmd_packets--; 7700 7701 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7702 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7703 if (err != 0){ 7704 return ERROR_CODE_HARDWARE_FAILURE; 7705 } 7706 return ERROR_CODE_SUCCESS; 7707 } 7708 7709 // disconnect because of security block 7710 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7711 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7712 if (!connection) return; 7713 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7714 } 7715 7716 7717 // Configure Secure Simple Pairing 7718 7719 #ifdef ENABLE_CLASSIC 7720 7721 // enable will enable SSP during init 7722 void gap_ssp_set_enable(int enable){ 7723 hci_stack->ssp_enable = enable; 7724 } 7725 7726 static int hci_local_ssp_activated(void){ 7727 return gap_ssp_supported() && hci_stack->ssp_enable; 7728 } 7729 7730 // if set, BTstack will respond to io capability request using authentication requirement 7731 void gap_ssp_set_io_capability(int io_capability){ 7732 hci_stack->ssp_io_capability = io_capability; 7733 } 7734 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7735 hci_stack->ssp_authentication_requirement = authentication_requirement; 7736 } 7737 7738 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7739 void gap_ssp_set_auto_accept(int auto_accept){ 7740 hci_stack->ssp_auto_accept = auto_accept; 7741 } 7742 7743 void gap_secure_connections_enable(bool enable){ 7744 hci_stack->secure_connections_enable = enable; 7745 } 7746 bool gap_secure_connections_active(void){ 7747 return hci_stack->secure_connections_active; 7748 } 7749 7750 #endif 7751 7752 // va_list part of hci_send_cmd 7753 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7754 if (!hci_can_send_command_packet_now()){ 7755 log_error("hci_send_cmd called but cannot send packet now"); 7756 return ERROR_CODE_COMMAND_DISALLOWED; 7757 } 7758 7759 // for HCI INITIALIZATION 7760 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7761 hci_stack->last_cmd_opcode = cmd->opcode; 7762 7763 hci_reserve_packet_buffer(); 7764 uint8_t * packet = hci_stack->hci_packet_buffer; 7765 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7766 uint8_t status = hci_send_cmd_packet(packet, size); 7767 7768 // release packet buffer on error or for synchronous transport implementations 7769 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7770 hci_release_packet_buffer(); 7771 hci_emit_transport_packet_sent(); 7772 } 7773 7774 return status; 7775 } 7776 7777 /** 7778 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7779 */ 7780 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7781 va_list argptr; 7782 va_start(argptr, cmd); 7783 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7784 va_end(argptr); 7785 return status; 7786 } 7787 7788 // Create various non-HCI events. 7789 // TODO: generalize, use table similar to hci_create_command 7790 7791 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7792 // dump packet 7793 if (dump) { 7794 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7795 } 7796 7797 // dispatch to all event handlers 7798 btstack_linked_list_iterator_t it; 7799 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7800 while (btstack_linked_list_iterator_has_next(&it)){ 7801 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7802 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7803 } 7804 } 7805 7806 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7807 if (!hci_stack->acl_packet_handler) return; 7808 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7809 } 7810 7811 #ifdef ENABLE_CLASSIC 7812 static void hci_notify_if_sco_can_send_now(void){ 7813 // notify SCO sender if waiting 7814 if (!hci_stack->sco_waiting_for_can_send_now) return; 7815 if (hci_can_send_sco_packet_now()){ 7816 hci_stack->sco_waiting_for_can_send_now = 0; 7817 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7818 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7819 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7820 } 7821 } 7822 7823 // parsing end emitting has been merged to reduce code size 7824 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7825 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7826 7827 uint8_t * eir_data; 7828 ad_context_t context; 7829 const uint8_t * name; 7830 uint8_t name_len; 7831 7832 if (size < 3) return; 7833 7834 int event_type = hci_event_packet_get_type(packet); 7835 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7836 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7837 7838 switch (event_type){ 7839 case HCI_EVENT_INQUIRY_RESULT: 7840 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7841 if (size != (3 + (num_responses * 14))) return; 7842 break; 7843 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7844 if (size != 257) return; 7845 if (num_responses != 1) return; 7846 break; 7847 default: 7848 return; 7849 } 7850 7851 // event[1] is set at the end 7852 int i; 7853 for (i=0; i<num_responses;i++){ 7854 memset(event, 0, sizeof(event)); 7855 event[0] = GAP_EVENT_INQUIRY_RESULT; 7856 uint8_t event_size = 27; // if name is not set by EIR 7857 7858 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7859 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7860 (void)memcpy(&event[9], 7861 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7862 3); // class of device 7863 (void)memcpy(&event[12], 7864 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7865 2); // clock offset 7866 7867 switch (event_type){ 7868 case HCI_EVENT_INQUIRY_RESULT: 7869 // 14,15,16,17 = 0, size 18 7870 break; 7871 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7872 event[14] = 1; 7873 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7874 // 16,17 = 0, size 18 7875 break; 7876 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7877 event[14] = 1; 7878 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7879 // EIR packets only contain a single inquiry response 7880 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7881 name = NULL; 7882 // Iterate over EIR data 7883 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7884 uint8_t data_type = ad_iterator_get_data_type(&context); 7885 uint8_t data_size = ad_iterator_get_data_len(&context); 7886 const uint8_t * data = ad_iterator_get_data(&context); 7887 // Prefer Complete Local Name over Shortened Local Name 7888 switch (data_type){ 7889 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7890 if (name) continue; 7891 /* fall through */ 7892 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7893 name = data; 7894 name_len = data_size; 7895 break; 7896 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7897 if (data_size != 8) break; 7898 event[16] = 1; 7899 memcpy(&event[17], data, 8); 7900 break; 7901 default: 7902 break; 7903 } 7904 } 7905 if (name){ 7906 event[25] = 1; 7907 // truncate name if needed 7908 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7909 event[26] = len; 7910 (void)memcpy(&event[27], name, len); 7911 event_size += len; 7912 } 7913 break; 7914 default: 7915 return; 7916 } 7917 event[1] = event_size - 2; 7918 hci_emit_event(event, event_size, 1); 7919 } 7920 } 7921 #endif 7922 7923 void hci_emit_state(void){ 7924 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7925 uint8_t event[3]; 7926 event[0] = BTSTACK_EVENT_STATE; 7927 event[1] = sizeof(event) - 2u; 7928 event[2] = hci_stack->state; 7929 hci_emit_event(event, sizeof(event), 1); 7930 } 7931 7932 #ifdef ENABLE_CLASSIC 7933 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7934 uint8_t event[13]; 7935 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7936 event[1] = sizeof(event) - 2; 7937 event[2] = status; 7938 little_endian_store_16(event, 3, con_handle); 7939 reverse_bd_addr(address, &event[5]); 7940 event[11] = 1; // ACL connection 7941 event[12] = 0; // encryption disabled 7942 hci_emit_event(event, sizeof(event), 1); 7943 } 7944 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7945 if (disable_l2cap_timeouts) return; 7946 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7947 uint8_t event[4]; 7948 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7949 event[1] = sizeof(event) - 2; 7950 little_endian_store_16(event, 2, conn->con_handle); 7951 hci_emit_event(event, sizeof(event), 1); 7952 } 7953 #endif 7954 7955 #ifdef ENABLE_BLE 7956 #ifdef ENABLE_LE_CENTRAL 7957 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){ 7958 uint8_t hci_event[21]; 7959 hci_event[0] = HCI_EVENT_LE_META; 7960 hci_event[1] = sizeof(hci_event) - 2u; 7961 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7962 hci_event[3] = status; 7963 little_endian_store_16(hci_event, 4, con_handle); 7964 hci_event[6] = 0; // TODO: role 7965 hci_event[7] = address_type; 7966 reverse_bd_addr(address, &hci_event[8]); 7967 little_endian_store_16(hci_event, 14, 0); // interval 7968 little_endian_store_16(hci_event, 16, 0); // latency 7969 little_endian_store_16(hci_event, 18, 0); // supervision timeout 7970 hci_event[20] = 0; // master clock accuracy 7971 hci_emit_event(hci_event, sizeof(hci_event), 1); 7972 // emit GAP event, too 7973 uint8_t gap_event[36]; 7974 hci_create_gap_connection_complete_event(hci_event, gap_event); 7975 hci_emit_event(gap_event, sizeof(gap_event), 1); 7976 } 7977 #endif 7978 #endif 7979 7980 static void hci_emit_transport_packet_sent(void){ 7981 // notify upper stack that it might be possible to send again 7982 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7983 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7984 } 7985 7986 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7987 uint8_t event[6]; 7988 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7989 event[1] = sizeof(event) - 2u; 7990 event[2] = 0; // status = OK 7991 little_endian_store_16(event, 3, con_handle); 7992 event[5] = reason; 7993 hci_emit_event(event, sizeof(event), 1); 7994 } 7995 7996 static void hci_emit_nr_connections_changed(void){ 7997 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7998 uint8_t event[3]; 7999 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8000 event[1] = sizeof(event) - 2u; 8001 event[2] = nr_hci_connections(); 8002 hci_emit_event(event, sizeof(event), 1); 8003 } 8004 8005 static void hci_emit_hci_open_failed(void){ 8006 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8007 uint8_t event[2]; 8008 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8009 event[1] = sizeof(event) - 2u; 8010 hci_emit_event(event, sizeof(event), 1); 8011 } 8012 8013 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8014 log_info("hci_emit_dedicated_bonding_result %u ", status); 8015 uint8_t event[9]; 8016 int pos = 0; 8017 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8018 event[pos++] = sizeof(event) - 2u; 8019 event[pos++] = status; 8020 reverse_bd_addr(address, &event[pos]); 8021 hci_emit_event(event, sizeof(event), 1); 8022 } 8023 8024 8025 #ifdef ENABLE_CLASSIC 8026 8027 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8028 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8029 uint8_t event[5]; 8030 int pos = 0; 8031 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8032 event[pos++] = sizeof(event) - 2; 8033 little_endian_store_16(event, 2, con_handle); 8034 pos += 2; 8035 event[pos++] = level; 8036 hci_emit_event(event, sizeof(event), 1); 8037 } 8038 8039 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8040 if (!connection) return LEVEL_0; 8041 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8042 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8043 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8044 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8045 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8046 // LEVEL 4 always requires 128 bit encrytion key size 8047 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8048 security_level = LEVEL_3; 8049 } 8050 return security_level; 8051 } 8052 8053 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8054 uint8_t event[4]; 8055 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8056 event[1] = sizeof(event) - 2; 8057 event[2] = discoverable; 8058 event[3] = connectable; 8059 hci_emit_event(event, sizeof(event), 1); 8060 } 8061 8062 // query if remote side supports eSCO 8063 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8064 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8065 if (!connection) return false; 8066 return (connection->remote_supported_features[0] & 1) != 0; 8067 } 8068 8069 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8070 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8071 if (!connection) return 0; 8072 return connection->remote_supported_sco_packets; 8073 } 8074 8075 static bool hci_ssp_supported(hci_connection_t * connection){ 8076 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8077 return (connection->bonding_flags & mask) == mask; 8078 } 8079 8080 // query if remote side supports SSP 8081 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8082 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8083 if (!connection) return false; 8084 return hci_ssp_supported(connection) ? 1 : 0; 8085 } 8086 8087 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8088 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8089 } 8090 8091 /** 8092 * Check if remote supported features query has completed 8093 */ 8094 bool hci_remote_features_available(hci_con_handle_t handle){ 8095 hci_connection_t * connection = hci_connection_for_handle(handle); 8096 if (!connection) return false; 8097 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8098 } 8099 8100 /** 8101 * Trigger remote supported features query 8102 */ 8103 8104 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8105 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8106 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8107 } 8108 } 8109 8110 void hci_remote_features_query(hci_con_handle_t con_handle){ 8111 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8112 if (!connection) return; 8113 hci_trigger_remote_features_for_connection(connection); 8114 hci_run(); 8115 } 8116 8117 // GAP API 8118 /** 8119 * @bbrief enable/disable bonding. default is enabled 8120 * @praram enabled 8121 */ 8122 void gap_set_bondable_mode(int enable){ 8123 hci_stack->bondable = enable ? 1 : 0; 8124 } 8125 /** 8126 * @brief Get bondable mode. 8127 * @return 1 if bondable 8128 */ 8129 int gap_get_bondable_mode(void){ 8130 return hci_stack->bondable; 8131 } 8132 8133 /** 8134 * @brief map link keys to security levels 8135 */ 8136 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8137 switch (link_key_type){ 8138 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8139 return LEVEL_4; 8140 case COMBINATION_KEY: 8141 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8142 return LEVEL_3; 8143 default: 8144 return LEVEL_2; 8145 } 8146 } 8147 8148 /** 8149 * @brief map link keys to secure connection yes/no 8150 */ 8151 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8152 switch (link_key_type){ 8153 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8154 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8155 return true; 8156 default: 8157 return false; 8158 } 8159 } 8160 8161 /** 8162 * @brief map link keys to authenticated 8163 */ 8164 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8165 switch (link_key_type){ 8166 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8167 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8168 return true; 8169 default: 8170 return false; 8171 } 8172 } 8173 8174 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8175 log_info("gap_mitm_protection_required_for_security_level %u", level); 8176 return level > LEVEL_2; 8177 } 8178 8179 /** 8180 * @brief get current security level 8181 */ 8182 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8183 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8184 if (!connection) return LEVEL_0; 8185 return gap_security_level_for_connection(connection); 8186 } 8187 8188 /** 8189 * @brief request connection to device to 8190 * @result GAP_AUTHENTICATION_RESULT 8191 */ 8192 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8193 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8194 if (!connection){ 8195 hci_emit_security_level(con_handle, LEVEL_0); 8196 return; 8197 } 8198 8199 btstack_assert(hci_is_le_connection(connection) == false); 8200 8201 // 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) 8202 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8203 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8204 requested_level = LEVEL_4; 8205 } 8206 8207 gap_security_level_t current_level = gap_security_level(con_handle); 8208 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8209 requested_level, connection->requested_security_level, current_level); 8210 8211 // authentication active if authentication request was sent or planned level > 0 8212 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8213 if (authentication_active){ 8214 // authentication already active 8215 if (connection->requested_security_level < requested_level){ 8216 // increase requested level as new level is higher 8217 // TODO: handle re-authentication when done 8218 connection->requested_security_level = requested_level; 8219 } 8220 } else { 8221 // no request active, notify if security sufficient 8222 if (requested_level <= current_level){ 8223 hci_emit_security_level(con_handle, current_level); 8224 return; 8225 } 8226 8227 // store request 8228 connection->requested_security_level = requested_level; 8229 8230 // start to authenticate connection 8231 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8232 8233 // request remote features if not already active, also trigger hci_run 8234 hci_remote_features_query(con_handle); 8235 } 8236 } 8237 8238 /** 8239 * @brief start dedicated bonding with device. disconnect after bonding 8240 * @param device 8241 * @param request MITM protection 8242 * @result GAP_DEDICATED_BONDING_COMPLETE 8243 */ 8244 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8245 8246 // create connection state machine 8247 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8248 8249 if (!connection){ 8250 return BTSTACK_MEMORY_ALLOC_FAILED; 8251 } 8252 8253 // delete link key 8254 gap_drop_link_key_for_bd_addr(device); 8255 8256 // configure LEVEL_2/3, dedicated bonding 8257 connection->state = SEND_CREATE_CONNECTION; 8258 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8259 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8260 connection->bonding_flags = BONDING_DEDICATED; 8261 8262 hci_run(); 8263 8264 return 0; 8265 } 8266 8267 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8268 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8269 if (connection == NULL){ 8270 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8271 } 8272 if (defer){ 8273 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8274 } else { 8275 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8276 // trigger disconnect 8277 hci_run(); 8278 } 8279 return ERROR_CODE_SUCCESS; 8280 } 8281 8282 void gap_set_local_name(const char * local_name){ 8283 hci_stack->local_name = local_name; 8284 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8285 // also update EIR if not set by user 8286 if (hci_stack->eir_data == NULL){ 8287 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8288 } 8289 hci_run(); 8290 } 8291 #endif 8292 8293 8294 #ifdef ENABLE_BLE 8295 8296 #ifdef ENABLE_LE_CENTRAL 8297 void gap_start_scan(void){ 8298 hci_stack->le_scanning_enabled = true; 8299 hci_run(); 8300 } 8301 8302 void gap_stop_scan(void){ 8303 hci_stack->le_scanning_enabled = false; 8304 hci_run(); 8305 } 8306 8307 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8308 hci_stack->le_scan_type = scan_type; 8309 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8310 hci_stack->le_scan_interval = scan_interval; 8311 hci_stack->le_scan_window = scan_window; 8312 hci_stack->le_scanning_param_update = true; 8313 hci_run(); 8314 } 8315 8316 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8317 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8318 } 8319 8320 void gap_set_scan_duplicate_filter(bool enabled){ 8321 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8322 } 8323 8324 void gap_set_scan_phys(uint8_t phys){ 8325 // LE Coded and LE 1M PHY 8326 hci_stack->le_scan_phys = phys & 0x05; 8327 } 8328 8329 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8330 // disallow le connection if outgoing already active 8331 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8332 log_error("le connect already active"); 8333 return ERROR_CODE_COMMAND_DISALLOWED; 8334 } 8335 8336 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8337 if (conn == NULL) { 8338 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8339 if (conn == false){ 8340 // alloc failed 8341 log_info("gap_connect: failed to alloc hci_connection_t"); 8342 return BTSTACK_MEMORY_ALLOC_FAILED; 8343 } 8344 } else { 8345 switch (conn->state) { 8346 case RECEIVED_DISCONNECTION_COMPLETE: 8347 // connection was just disconnected, reset state and allow re-connect 8348 conn->role = HCI_ROLE_MASTER; 8349 break; 8350 default: 8351 return ERROR_CODE_COMMAND_DISALLOWED; 8352 } 8353 } 8354 8355 // set le connecting state 8356 if (hci_is_le_connection_type(addr_type)){ 8357 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8358 } 8359 8360 // trigger connect 8361 log_info("gap_connect: send create connection next"); 8362 conn->state = SEND_CREATE_CONNECTION; 8363 hci_run(); 8364 return ERROR_CODE_SUCCESS; 8365 } 8366 8367 // @assumption: only a single outgoing LE Connection exists 8368 static hci_connection_t * gap_get_outgoing_connection(void){ 8369 btstack_linked_item_t *it; 8370 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8371 hci_connection_t * conn = (hci_connection_t *) it; 8372 if (!hci_is_le_connection(conn)) continue; 8373 switch (conn->state){ 8374 case SEND_CREATE_CONNECTION: 8375 case SENT_CREATE_CONNECTION: 8376 return conn; 8377 default: 8378 break; 8379 }; 8380 } 8381 return NULL; 8382 } 8383 8384 uint8_t gap_connect_cancel(void){ 8385 hci_connection_t * conn; 8386 switch (hci_stack->le_connecting_request){ 8387 case LE_CONNECTING_IDLE: 8388 break; 8389 case LE_CONNECTING_WHITELIST: 8390 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8391 hci_run(); 8392 break; 8393 case LE_CONNECTING_DIRECT: 8394 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8395 conn = gap_get_outgoing_connection(); 8396 if (conn == NULL){ 8397 hci_run(); 8398 } else { 8399 switch (conn->state){ 8400 case SEND_CREATE_CONNECTION: 8401 // skip sending create connection and emit event instead 8402 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8403 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8404 btstack_memory_hci_connection_free( conn ); 8405 break; 8406 case SENT_CREATE_CONNECTION: 8407 // let hci_run_general_gap_le cancel outgoing connection 8408 hci_run(); 8409 break; 8410 default: 8411 break; 8412 } 8413 } 8414 break; 8415 default: 8416 btstack_unreachable(); 8417 break; 8418 } 8419 return ERROR_CODE_SUCCESS; 8420 } 8421 8422 /** 8423 * @brief Set connection parameters for outgoing connections 8424 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8425 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8426 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8427 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8428 * @param conn_latency, default: 4 8429 * @param supervision_timeout (unit: 10ms), default: 720 ms 8430 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8431 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8432 */ 8433 8434 void gap_set_connection_phys(uint8_t phys){ 8435 // LE Coded, LE 1M, LE 2M PHY 8436 hci_stack->le_connection_phys = phys & 7; 8437 } 8438 8439 #endif 8440 8441 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8442 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8443 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8444 hci_stack->le_connection_scan_interval = conn_scan_interval; 8445 hci_stack->le_connection_scan_window = conn_scan_window; 8446 hci_stack->le_connection_interval_min = conn_interval_min; 8447 hci_stack->le_connection_interval_max = conn_interval_max; 8448 hci_stack->le_connection_latency = conn_latency; 8449 hci_stack->le_supervision_timeout = supervision_timeout; 8450 hci_stack->le_minimum_ce_length = min_ce_length; 8451 hci_stack->le_maximum_ce_length = max_ce_length; 8452 } 8453 8454 /** 8455 * @brief Updates the connection parameters for a given LE connection 8456 * @param handle 8457 * @param conn_interval_min (unit: 1.25ms) 8458 * @param conn_interval_max (unit: 1.25ms) 8459 * @param conn_latency 8460 * @param supervision_timeout (unit: 10ms) 8461 * @return 0 if ok 8462 */ 8463 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8464 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8465 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8466 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8467 connection->le_conn_interval_min = conn_interval_min; 8468 connection->le_conn_interval_max = conn_interval_max; 8469 connection->le_conn_latency = conn_latency; 8470 connection->le_supervision_timeout = supervision_timeout; 8471 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8472 hci_run(); 8473 return 0; 8474 } 8475 8476 /** 8477 * @brief Request an update of the connection parameter for a given LE connection 8478 * @param handle 8479 * @param conn_interval_min (unit: 1.25ms) 8480 * @param conn_interval_max (unit: 1.25ms) 8481 * @param conn_latency 8482 * @param supervision_timeout (unit: 10ms) 8483 * @return 0 if ok 8484 */ 8485 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8486 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8487 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8488 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8489 connection->le_conn_interval_min = conn_interval_min; 8490 connection->le_conn_interval_max = conn_interval_max; 8491 connection->le_conn_latency = conn_latency; 8492 connection->le_supervision_timeout = supervision_timeout; 8493 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8494 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8495 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8496 return 0; 8497 } 8498 8499 #ifdef ENABLE_LE_PERIPHERAL 8500 8501 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8502 static void hci_assert_advertisement_set_0_ready(void){ 8503 // force advertising set creation for legacy LE Advertising 8504 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8505 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8506 } 8507 } 8508 #endif 8509 8510 /** 8511 * @brief Set Advertisement Data 8512 * @param advertising_data_length 8513 * @param advertising_data (max 31 octets) 8514 * @note data is not copied, pointer has to stay valid 8515 */ 8516 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8517 hci_stack->le_advertisements_data_len = advertising_data_length; 8518 hci_stack->le_advertisements_data = advertising_data; 8519 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8520 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8521 hci_assert_advertisement_set_0_ready(); 8522 #endif 8523 hci_run(); 8524 } 8525 8526 /** 8527 * @brief Set Scan Response Data 8528 * @param advertising_data_length 8529 * @param advertising_data (max 31 octets) 8530 * @note data is not copied, pointer has to stay valid 8531 */ 8532 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8533 hci_stack->le_scan_response_data_len = scan_response_data_length; 8534 hci_stack->le_scan_response_data = scan_response_data; 8535 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8536 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8537 hci_assert_advertisement_set_0_ready(); 8538 #endif 8539 hci_run(); 8540 } 8541 8542 /** 8543 * @brief Set Advertisement Parameters 8544 * @param adv_int_min 8545 * @param adv_int_max 8546 * @param adv_type 8547 * @param direct_address_type 8548 * @param direct_address 8549 * @param channel_map 8550 * @param filter_policy 8551 * 8552 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8553 */ 8554 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8555 uint8_t direct_address_typ, bd_addr_t direct_address, 8556 uint8_t channel_map, uint8_t filter_policy) { 8557 8558 hci_stack->le_advertisements_interval_min = adv_int_min; 8559 hci_stack->le_advertisements_interval_max = adv_int_max; 8560 hci_stack->le_advertisements_type = adv_type; 8561 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8562 hci_stack->le_advertisements_channel_map = channel_map; 8563 hci_stack->le_advertisements_filter_policy = filter_policy; 8564 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8565 6); 8566 8567 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8568 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8569 hci_run(); 8570 } 8571 8572 /** 8573 * @brief Enable/Disable Advertisements 8574 * @param enabled 8575 */ 8576 void gap_advertisements_enable(int enabled){ 8577 if (enabled == 0){ 8578 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8579 } else { 8580 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8581 } 8582 hci_update_advertisements_enabled_for_current_roles(); 8583 hci_run(); 8584 } 8585 8586 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8587 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8588 btstack_linked_list_iterator_t it; 8589 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8590 while (btstack_linked_list_iterator_has_next(&it)){ 8591 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8592 if ( item->advertising_handle == advertising_handle ) { 8593 return item; 8594 } 8595 } 8596 return NULL; 8597 } 8598 8599 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8600 hci_stack->le_resolvable_private_address_update_s = update_s; 8601 hci_run(); 8602 return ERROR_CODE_SUCCESS; 8603 } 8604 8605 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8606 // find free advertisement handle 8607 uint8_t advertisement_handle; 8608 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8609 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8610 } 8611 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8612 // clear 8613 memset(storage, 0, sizeof(le_advertising_set_t)); 8614 // copy params 8615 storage->advertising_handle = advertisement_handle; 8616 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8617 // add to list 8618 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8619 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8620 *out_advertising_handle = advertisement_handle; 8621 // set tasks and start 8622 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8623 hci_run(); 8624 return ERROR_CODE_SUCCESS; 8625 } 8626 8627 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8628 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8629 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8630 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8631 // set tasks and start 8632 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8633 hci_run(); 8634 return ERROR_CODE_SUCCESS; 8635 } 8636 8637 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8638 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8639 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8640 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8641 return ERROR_CODE_SUCCESS; 8642 } 8643 8644 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8645 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8646 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8647 memcpy(advertising_set->random_address, random_address, 6); 8648 // set tasks and start 8649 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8650 hci_run(); 8651 return ERROR_CODE_SUCCESS; 8652 } 8653 8654 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8655 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8656 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8657 advertising_set->adv_data = advertising_data; 8658 advertising_set->adv_data_len = advertising_data_length; 8659 // set tasks and start 8660 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8661 hci_run(); 8662 return ERROR_CODE_SUCCESS; 8663 } 8664 8665 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){ 8666 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8667 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8668 advertising_set->scan_data = scan_response_data; 8669 advertising_set->scan_data_len = scan_response_data_length; 8670 // set tasks and start 8671 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8672 hci_run(); 8673 return ERROR_CODE_SUCCESS; 8674 } 8675 8676 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8677 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8678 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8679 advertising_set->enable_timeout = timeout; 8680 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8681 // set tasks and start 8682 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8683 hci_run(); 8684 return ERROR_CODE_SUCCESS; 8685 } 8686 8687 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8688 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8689 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8690 // set tasks and start 8691 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8692 hci_run(); 8693 return ERROR_CODE_SUCCESS; 8694 } 8695 8696 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8697 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8698 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8699 // set tasks and start 8700 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8701 hci_run(); 8702 return ERROR_CODE_SUCCESS; 8703 } 8704 8705 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8706 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8707 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8708 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8709 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8710 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8711 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8712 // set tasks and start 8713 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8714 hci_run(); 8715 return ERROR_CODE_SUCCESS; 8716 } 8717 8718 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8719 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8720 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8721 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8722 return ERROR_CODE_SUCCESS; 8723 } 8724 8725 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8726 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8727 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8728 advertising_set->periodic_data = periodic_data; 8729 advertising_set->periodic_data_len = periodic_data_length; 8730 // set tasks and start 8731 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8732 hci_run(); 8733 return ERROR_CODE_SUCCESS; 8734 } 8735 8736 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8737 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8738 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8739 // set tasks and start 8740 advertising_set->periodic_include_adi = include_adi; 8741 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8742 hci_run(); 8743 return ERROR_CODE_SUCCESS; 8744 } 8745 8746 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8747 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8748 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8749 // set tasks and start 8750 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8751 hci_run(); 8752 return ERROR_CODE_SUCCESS; 8753 } 8754 8755 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8756 hci_stack->le_past_mode = mode; 8757 hci_stack->le_past_skip = skip; 8758 hci_stack->le_past_sync_timeout = sync_timeout; 8759 hci_stack->le_past_cte_type = cte_type; 8760 hci_stack->le_past_set_default_params = true; 8761 hci_run(); 8762 return ERROR_CODE_SUCCESS; 8763 } 8764 8765 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8766 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8767 if (hci_connection == NULL){ 8768 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8769 } 8770 hci_connection->le_past_sync_handle = sync_handle; 8771 hci_connection->le_past_service_data = service_data; 8772 hci_run(); 8773 return ERROR_CODE_SUCCESS; 8774 } 8775 8776 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8777 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8778 if (hci_connection == NULL){ 8779 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8780 } 8781 hci_connection->le_past_advertising_handle = advertising_handle; 8782 hci_connection->le_past_service_data = service_data; 8783 hci_run(); 8784 return ERROR_CODE_SUCCESS; 8785 } 8786 8787 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8788 8789 #endif 8790 8791 #endif 8792 8793 void hci_le_set_own_address_type(uint8_t own_address_type){ 8794 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8795 if (own_address_type == hci_stack->le_own_addr_type) return; 8796 hci_stack->le_own_addr_type = own_address_type; 8797 8798 #ifdef ENABLE_LE_PERIPHERAL 8799 // update advertisement parameters, too 8800 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8801 hci_run(); 8802 #endif 8803 #ifdef ENABLE_LE_CENTRAL 8804 // note: we don't update scan parameters or modify ongoing connection attempts 8805 #endif 8806 } 8807 8808 void hci_le_random_address_set(const bd_addr_t random_address){ 8809 memcpy(hci_stack->le_random_address, random_address, 6); 8810 hci_stack->le_random_address_set = true; 8811 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8812 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8813 if (hci_extended_advertising_supported()){ 8814 hci_assert_advertisement_set_0_ready(); 8815 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8816 } 8817 #endif 8818 hci_run(); 8819 } 8820 8821 #endif 8822 8823 uint8_t gap_disconnect(hci_con_handle_t handle){ 8824 hci_connection_t * conn = hci_connection_for_handle(handle); 8825 if (!conn){ 8826 hci_emit_disconnection_complete(handle, 0); 8827 return 0; 8828 } 8829 // ignore if already disconnected 8830 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8831 return 0; 8832 } 8833 conn->state = SEND_DISCONNECT; 8834 hci_run(); 8835 return 0; 8836 } 8837 8838 int gap_read_rssi(hci_con_handle_t con_handle){ 8839 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8840 if (hci_connection == NULL) return 0; 8841 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8842 hci_run(); 8843 return 1; 8844 } 8845 8846 /** 8847 * @brief Get connection type 8848 * @param con_handle 8849 * @result connection_type 8850 */ 8851 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8852 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8853 if (!conn) return GAP_CONNECTION_INVALID; 8854 switch (conn->address_type){ 8855 case BD_ADDR_TYPE_LE_PUBLIC: 8856 case BD_ADDR_TYPE_LE_RANDOM: 8857 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8858 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8859 return GAP_CONNECTION_LE; 8860 case BD_ADDR_TYPE_SCO: 8861 return GAP_CONNECTION_SCO; 8862 case BD_ADDR_TYPE_ACL: 8863 return GAP_CONNECTION_ACL; 8864 default: 8865 return GAP_CONNECTION_INVALID; 8866 } 8867 } 8868 8869 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8870 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8871 if (!conn) return HCI_ROLE_INVALID; 8872 return (hci_role_t) conn->role; 8873 } 8874 8875 8876 #ifdef ENABLE_CLASSIC 8877 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8878 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8879 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8880 conn->request_role = role; 8881 hci_run(); 8882 return ERROR_CODE_SUCCESS; 8883 } 8884 #endif 8885 8886 #ifdef ENABLE_BLE 8887 8888 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){ 8889 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8890 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8891 8892 conn->le_phy_update_all_phys = all_phys; 8893 conn->le_phy_update_tx_phys = tx_phys; 8894 conn->le_phy_update_rx_phys = rx_phys; 8895 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8896 8897 hci_run(); 8898 8899 return 0; 8900 } 8901 8902 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8903 8904 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 8905 // incorrect configuration: 8906 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 8907 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 8908 btstack_assert(false); 8909 #endif 8910 8911 // check if already in list 8912 btstack_linked_list_iterator_t it; 8913 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8914 while (btstack_linked_list_iterator_has_next(&it)) { 8915 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8916 if (entry->address_type != address_type) { 8917 continue; 8918 } 8919 if (memcmp(entry->address, address, 6) != 0) { 8920 continue; 8921 } 8922 8923 // if already on controller: 8924 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8925 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8926 // drop remove request 8927 entry->state = LE_WHITELIST_ON_CONTROLLER; 8928 return ERROR_CODE_SUCCESS; 8929 } else { 8930 // disallow as already on controller 8931 return ERROR_CODE_COMMAND_DISALLOWED; 8932 } 8933 } 8934 8935 // assume scheduled to add 8936 return ERROR_CODE_COMMAND_DISALLOWED; 8937 } 8938 8939 // alloc and add to list 8940 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8941 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8942 entry->address_type = address_type; 8943 (void)memcpy(entry->address, address, 6); 8944 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8945 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8946 return ERROR_CODE_SUCCESS; 8947 } 8948 8949 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8950 btstack_linked_list_iterator_t it; 8951 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8952 while (btstack_linked_list_iterator_has_next(&it)){ 8953 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8954 if (entry->address_type != address_type) { 8955 continue; 8956 } 8957 if (memcmp(entry->address, address, 6) != 0) { 8958 continue; 8959 } 8960 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8961 // remove from controller if already present 8962 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8963 } else { 8964 // directly remove entry from whitelist 8965 btstack_linked_list_iterator_remove(&it); 8966 btstack_memory_whitelist_entry_free(entry); 8967 } 8968 return ERROR_CODE_SUCCESS; 8969 } 8970 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8971 } 8972 8973 static void hci_whitelist_clear(void){ 8974 btstack_linked_list_iterator_t it; 8975 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8976 while (btstack_linked_list_iterator_has_next(&it)){ 8977 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8978 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8979 // remove from controller if already present 8980 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8981 continue; 8982 } 8983 // directly remove entry from whitelist 8984 btstack_linked_list_iterator_remove(&it); 8985 btstack_memory_whitelist_entry_free(entry); 8986 } 8987 } 8988 8989 /** 8990 * @brief Clear Whitelist 8991 * @return 0 if ok 8992 */ 8993 uint8_t gap_whitelist_clear(void){ 8994 hci_whitelist_clear(); 8995 hci_run(); 8996 return ERROR_CODE_SUCCESS; 8997 } 8998 8999 /** 9000 * @brief Add Device to Whitelist 9001 * @param address_typ 9002 * @param address 9003 * @return 0 if ok 9004 */ 9005 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9006 uint8_t status = hci_whitelist_add(address_type, address); 9007 if (status){ 9008 return status; 9009 } 9010 hci_run(); 9011 return ERROR_CODE_SUCCESS; 9012 } 9013 9014 /** 9015 * @brief Remove Device from Whitelist 9016 * @param address_typ 9017 * @param address 9018 * @return 0 if ok 9019 */ 9020 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9021 uint8_t status = hci_whitelist_remove(address_type, address); 9022 if (status){ 9023 return status; 9024 } 9025 hci_run(); 9026 return ERROR_CODE_SUCCESS; 9027 } 9028 9029 #ifdef ENABLE_LE_CENTRAL 9030 /** 9031 * @brief Connect with Whitelist 9032 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9033 * @return - if ok 9034 */ 9035 uint8_t gap_connect_with_whitelist(void){ 9036 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9037 return ERROR_CODE_COMMAND_DISALLOWED; 9038 } 9039 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9040 hci_run(); 9041 return ERROR_CODE_SUCCESS; 9042 } 9043 9044 /** 9045 * @brief Auto Connection Establishment - Start Connecting to device 9046 * @param address_typ 9047 * @param address 9048 * @return 0 if ok 9049 */ 9050 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9051 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9052 return ERROR_CODE_COMMAND_DISALLOWED; 9053 } 9054 9055 uint8_t status = hci_whitelist_add(address_type, address); 9056 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9057 return status; 9058 } 9059 9060 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9061 9062 hci_run(); 9063 return ERROR_CODE_SUCCESS; 9064 } 9065 9066 /** 9067 * @brief Auto Connection Establishment - Stop Connecting to device 9068 * @param address_typ 9069 * @param address 9070 * @return 0 if ok 9071 */ 9072 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9073 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9074 return ERROR_CODE_COMMAND_DISALLOWED; 9075 } 9076 9077 hci_whitelist_remove(address_type, address); 9078 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9079 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9080 } 9081 hci_run(); 9082 return 0; 9083 } 9084 9085 /** 9086 * @brief Auto Connection Establishment - Stop everything 9087 * @note Convenience function to stop all active auto connection attempts 9088 */ 9089 uint8_t gap_auto_connection_stop_all(void){ 9090 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9091 return ERROR_CODE_COMMAND_DISALLOWED; 9092 } 9093 hci_whitelist_clear(); 9094 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9095 hci_run(); 9096 return ERROR_CODE_SUCCESS; 9097 } 9098 9099 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9100 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9101 if (!conn) return 0; 9102 return conn->le_connection_interval; 9103 } 9104 #endif 9105 #endif 9106 9107 #ifdef ENABLE_CLASSIC 9108 /** 9109 * @brief Set Extended Inquiry Response data 9110 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9111 * @note has to be done before stack starts up 9112 */ 9113 void gap_set_extended_inquiry_response(const uint8_t * data){ 9114 hci_stack->eir_data = data; 9115 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9116 hci_run(); 9117 } 9118 9119 /** 9120 * @brief Start GAP Classic Inquiry 9121 * @param duration in 1.28s units 9122 * @return 0 if ok 9123 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9124 */ 9125 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9126 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9127 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9128 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9129 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9130 } 9131 hci_stack->inquiry_state = duration_in_1280ms_units; 9132 hci_stack->inquiry_max_period_length = 0; 9133 hci_stack->inquiry_min_period_length = 0; 9134 hci_run(); 9135 return 0; 9136 } 9137 9138 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9139 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9140 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9141 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9142 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9143 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9144 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9145 9146 hci_stack->inquiry_state = duration; 9147 hci_stack->inquiry_max_period_length = max_period_length; 9148 hci_stack->inquiry_min_period_length = min_period_length; 9149 hci_run(); 9150 return 0; 9151 } 9152 9153 /** 9154 * @brief Stop GAP Classic Inquiry 9155 * @return 0 if ok 9156 */ 9157 int gap_inquiry_stop(void){ 9158 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9159 // emit inquiry complete event, before it even started 9160 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9161 hci_emit_event(event, sizeof(event), 1); 9162 return 0; 9163 } 9164 switch (hci_stack->inquiry_state){ 9165 case GAP_INQUIRY_STATE_ACTIVE: 9166 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9167 hci_run(); 9168 return ERROR_CODE_SUCCESS; 9169 case GAP_INQUIRY_STATE_PERIODIC: 9170 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9171 hci_run(); 9172 return ERROR_CODE_SUCCESS; 9173 default: 9174 return ERROR_CODE_COMMAND_DISALLOWED; 9175 } 9176 } 9177 9178 void gap_inquiry_set_lap(uint32_t lap){ 9179 hci_stack->inquiry_lap = lap; 9180 } 9181 9182 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9183 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9184 hci_stack->inquiry_scan_window = inquiry_scan_window; 9185 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9186 hci_run(); 9187 } 9188 9189 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9190 { 9191 hci_stack->inquiry_tx_power_level = tx_power; 9192 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9193 hci_run(); 9194 } 9195 9196 9197 /** 9198 * @brief Remote Name Request 9199 * @param addr 9200 * @param page_scan_repetition_mode 9201 * @param clock_offset only used when bit 15 is set 9202 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9203 */ 9204 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9205 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9206 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9207 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9208 hci_stack->remote_name_clock_offset = clock_offset; 9209 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9210 hci_run(); 9211 return 0; 9212 } 9213 9214 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9215 hci_stack->gap_pairing_state = state; 9216 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9217 hci_run(); 9218 return 0; 9219 } 9220 9221 /** 9222 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9223 * @param addr 9224 * @param pin_data 9225 * @param pin_len 9226 * @return 0 if ok 9227 */ 9228 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9229 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9230 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9231 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9232 hci_stack->gap_pairing_pin_len = pin_len; 9233 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9234 } 9235 9236 /** 9237 * @brief Legacy Pairing Pin Code Response 9238 * @param addr 9239 * @param pin 9240 * @return 0 if ok 9241 */ 9242 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9243 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9244 } 9245 9246 /** 9247 * @brief Abort Legacy Pairing 9248 * @param addr 9249 * @param pin 9250 * @return 0 if ok 9251 */ 9252 int gap_pin_code_negative(bd_addr_t addr){ 9253 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9254 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9255 } 9256 9257 /** 9258 * @brief SSP Passkey Response 9259 * @param addr 9260 * @param passkey 9261 * @return 0 if ok 9262 */ 9263 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9264 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9265 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9266 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9267 } 9268 9269 /** 9270 * @brief Abort SSP Passkey Entry/Pairing 9271 * @param addr 9272 * @param pin 9273 * @return 0 if ok 9274 */ 9275 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9276 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9277 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9278 } 9279 9280 /** 9281 * @brief Accept SSP Numeric Comparison 9282 * @param addr 9283 * @param passkey 9284 * @return 0 if ok 9285 */ 9286 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9287 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9288 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9289 } 9290 9291 /** 9292 * @brief Abort SSP Numeric Comparison/Pairing 9293 * @param addr 9294 * @param pin 9295 * @return 0 if ok 9296 */ 9297 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9298 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9299 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9300 } 9301 9302 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9303 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9304 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9305 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9306 connectionSetAuthenticationFlags(conn, flag); 9307 hci_run(); 9308 return ERROR_CODE_SUCCESS; 9309 } 9310 #endif 9311 9312 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9313 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9314 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9315 } 9316 9317 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9318 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9319 } 9320 #endif 9321 9322 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9323 /** 9324 * @brief Report Remote OOB Data 9325 * @param bd_addr 9326 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9327 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9328 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9329 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9330 */ 9331 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){ 9332 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9333 if (connection == NULL) { 9334 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9335 } 9336 connection->classic_oob_c_192 = c_192; 9337 connection->classic_oob_r_192 = r_192; 9338 9339 // ignore P-256 if not supported by us 9340 if (hci_stack->secure_connections_active){ 9341 connection->classic_oob_c_256 = c_256; 9342 connection->classic_oob_r_256 = r_256; 9343 } 9344 9345 return ERROR_CODE_SUCCESS; 9346 } 9347 /** 9348 * @brief Generate new OOB data 9349 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9350 */ 9351 void gap_ssp_generate_oob_data(void){ 9352 hci_stack->classic_read_local_oob_data = true; 9353 hci_run(); 9354 } 9355 9356 #endif 9357 9358 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9359 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9360 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9361 if (connection == NULL) { 9362 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9363 } 9364 9365 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9366 connection->link_key_type = type; 9367 9368 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9369 } 9370 9371 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9372 /** 9373 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9374 * @param inquiry_mode see bluetooth_defines.h 9375 */ 9376 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9377 hci_stack->inquiry_mode = inquiry_mode; 9378 } 9379 9380 /** 9381 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9382 */ 9383 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9384 hci_stack->sco_voice_setting = voice_setting; 9385 } 9386 9387 /** 9388 * @brief Get SCO Voice Setting 9389 * @return current voice setting 9390 */ 9391 uint16_t hci_get_sco_voice_setting(void){ 9392 return hci_stack->sco_voice_setting; 9393 } 9394 9395 static int hci_have_usb_transport(void){ 9396 if (!hci_stack->hci_transport) return 0; 9397 const char * transport_name = hci_stack->hci_transport->name; 9398 if (!transport_name) return 0; 9399 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9400 } 9401 9402 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9403 uint16_t sco_packet_length = 0; 9404 9405 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9406 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9407 int multiplier; 9408 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9409 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9410 multiplier = 2; 9411 } else { 9412 multiplier = 1; 9413 } 9414 #endif 9415 9416 #ifdef ENABLE_SCO_OVER_HCI 9417 if (hci_have_usb_transport()){ 9418 // see Core Spec for H2 USB Transfer. 9419 // 3 byte SCO header + 24 bytes per connection 9420 // @note multiple sco connections not supported currently 9421 sco_packet_length = 3 + 24 * multiplier; 9422 } else { 9423 // 3 byte SCO header + SCO packet length over the air 9424 sco_packet_length = 3 + payload_size * multiplier; 9425 // assert that it still fits inside an SCO buffer 9426 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9427 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9428 } 9429 } 9430 #endif 9431 #ifdef HAVE_SCO_TRANSPORT 9432 // 3 byte SCO header + SCO packet length over the air 9433 sco_packet_length = 3 + payload_size * multiplier; 9434 // assert that it still fits inside an SCO buffer 9435 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9436 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9437 } 9438 #endif 9439 return sco_packet_length; 9440 } 9441 9442 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9443 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9444 if (connection != NULL){ 9445 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9446 } 9447 return 0; 9448 } 9449 9450 uint16_t hci_get_sco_packet_length(void){ 9451 btstack_linked_list_iterator_t it; 9452 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9453 while (btstack_linked_list_iterator_has_next(&it)){ 9454 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9455 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9456 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9457 } 9458 } 9459 return 0; 9460 } 9461 9462 /** 9463 * @brief Sets the master/slave policy 9464 * @param policy (0: attempt to become master, 1: let connecting device decide) 9465 */ 9466 void hci_set_master_slave_policy(uint8_t policy){ 9467 hci_stack->master_slave_policy = policy; 9468 } 9469 9470 #endif 9471 9472 HCI_STATE hci_get_state(void){ 9473 return hci_stack->state; 9474 } 9475 9476 #ifdef ENABLE_CLASSIC 9477 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9478 hci_stack->gap_classic_accept_callback = accept_callback; 9479 } 9480 #endif 9481 9482 /** 9483 * @brief Set callback for Bluetooth Hardware Error 9484 */ 9485 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9486 hci_stack->hardware_error_callback = fn; 9487 } 9488 9489 void hci_disconnect_all(void){ 9490 btstack_linked_list_iterator_t it; 9491 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9492 while (btstack_linked_list_iterator_has_next(&it)){ 9493 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9494 if (con->state == SENT_DISCONNECT) continue; 9495 con->state = SEND_DISCONNECT; 9496 } 9497 hci_run(); 9498 } 9499 9500 uint16_t hci_get_manufacturer(void){ 9501 return hci_stack->manufacturer; 9502 } 9503 9504 #ifdef ENABLE_BLE 9505 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9506 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9507 if (!hci_con) return NULL; 9508 return &hci_con->sm_connection; 9509 } 9510 9511 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9512 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9513 #endif 9514 9515 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9516 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9517 if (hci_connection == NULL) return 0; 9518 if (hci_is_le_connection(hci_connection)){ 9519 #ifdef ENABLE_BLE 9520 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9521 if (sm_conn->sm_connection_encrypted != 0u) { 9522 return sm_conn->sm_actual_encryption_key_size; 9523 } 9524 #endif 9525 } else { 9526 #ifdef ENABLE_CLASSIC 9527 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9528 return hci_connection->encryption_key_size; 9529 } 9530 #endif 9531 } 9532 return 0; 9533 } 9534 9535 bool gap_authenticated(hci_con_handle_t con_handle){ 9536 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9537 if (hci_connection == NULL) return false; 9538 9539 switch (hci_connection->address_type){ 9540 #ifdef ENABLE_BLE 9541 case BD_ADDR_TYPE_LE_PUBLIC: 9542 case BD_ADDR_TYPE_LE_RANDOM: 9543 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9544 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9545 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9546 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9547 #endif 9548 #ifdef ENABLE_CLASSIC 9549 case BD_ADDR_TYPE_SCO: 9550 case BD_ADDR_TYPE_ACL: 9551 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9552 #endif 9553 default: 9554 return false; 9555 } 9556 } 9557 9558 bool gap_secure_connection(hci_con_handle_t con_handle){ 9559 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9560 if (hci_connection == NULL) return 0; 9561 9562 switch (hci_connection->address_type){ 9563 #ifdef ENABLE_BLE 9564 case BD_ADDR_TYPE_LE_PUBLIC: 9565 case BD_ADDR_TYPE_LE_RANDOM: 9566 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9567 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9568 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9569 return hci_connection->sm_connection.sm_connection_sc; 9570 #endif 9571 #ifdef ENABLE_CLASSIC 9572 case BD_ADDR_TYPE_SCO: 9573 case BD_ADDR_TYPE_ACL: 9574 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9575 #endif 9576 default: 9577 return false; 9578 } 9579 } 9580 9581 bool gap_bonded(hci_con_handle_t con_handle){ 9582 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9583 if (hci_connection == NULL) return 0; 9584 9585 #ifdef ENABLE_CLASSIC 9586 link_key_t link_key; 9587 link_key_type_t link_key_type; 9588 #endif 9589 switch (hci_connection->address_type){ 9590 #ifdef ENABLE_BLE 9591 case BD_ADDR_TYPE_LE_PUBLIC: 9592 case BD_ADDR_TYPE_LE_RANDOM: 9593 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9594 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9595 return hci_connection->sm_connection.sm_le_db_index >= 0; 9596 #endif 9597 #ifdef ENABLE_CLASSIC 9598 case BD_ADDR_TYPE_SCO: 9599 case BD_ADDR_TYPE_ACL: 9600 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9601 #endif 9602 default: 9603 return false; 9604 } 9605 } 9606 9607 #ifdef ENABLE_BLE 9608 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9609 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9610 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9611 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9612 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9613 return sm_conn->sm_connection_authorization_state; 9614 } 9615 #endif 9616 9617 #ifdef ENABLE_CLASSIC 9618 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){ 9619 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9620 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9621 conn->sniff_min_interval = sniff_min_interval; 9622 conn->sniff_max_interval = sniff_max_interval; 9623 conn->sniff_attempt = sniff_attempt; 9624 conn->sniff_timeout = sniff_timeout; 9625 hci_run(); 9626 return 0; 9627 } 9628 9629 /** 9630 * @brief Exit Sniff mode 9631 * @param con_handle 9632 @ @return 0 if ok 9633 */ 9634 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9635 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9636 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9637 conn->sniff_min_interval = 0xffff; 9638 hci_run(); 9639 return 0; 9640 } 9641 9642 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){ 9643 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9644 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9645 conn->sniff_subrating_max_latency = max_latency; 9646 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9647 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9648 hci_run(); 9649 return ERROR_CODE_SUCCESS; 9650 } 9651 9652 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){ 9653 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9654 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9655 conn->qos_service_type = service_type; 9656 conn->qos_token_rate = token_rate; 9657 conn->qos_peak_bandwidth = peak_bandwidth; 9658 conn->qos_latency = latency; 9659 conn->qos_delay_variation = delay_variation; 9660 hci_run(); 9661 return ERROR_CODE_SUCCESS; 9662 } 9663 9664 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9665 hci_stack->new_page_scan_interval = page_scan_interval; 9666 hci_stack->new_page_scan_window = page_scan_window; 9667 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9668 hci_run(); 9669 } 9670 9671 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9672 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9673 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9674 hci_run(); 9675 } 9676 9677 void gap_set_page_timeout(uint16_t page_timeout){ 9678 hci_stack->page_timeout = page_timeout; 9679 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9680 hci_run(); 9681 } 9682 9683 #endif 9684 9685 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9686 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9687 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9688 if (le_device_db_index >= le_device_db_max_count()) return; 9689 uint8_t offset = le_device_db_index >> 3; 9690 uint8_t mask = 1 << (le_device_db_index & 7); 9691 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9692 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9693 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9694 // note: go back to remove entries, otherwise, a remove + add will skip the add 9695 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9696 } 9697 } 9698 9699 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9700 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9701 if (le_device_db_index >= le_device_db_max_count()) return; 9702 uint8_t offset = le_device_db_index >> 3; 9703 uint8_t mask = 1 << (le_device_db_index & 7); 9704 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9705 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9706 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9707 } 9708 } 9709 9710 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9711 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9712 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9713 } 9714 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9715 // restart le resolving list update 9716 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9717 } 9718 return ERROR_CODE_SUCCESS; 9719 } 9720 9721 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9722 hci_stack->le_privacy_mode = privacy_mode; 9723 } 9724 #endif 9725 9726 #ifdef ENABLE_BLE 9727 #ifdef ENABLE_LE_CENTRAL 9728 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9729 9730 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9731 9732 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9733 // incorrect configuration: 9734 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9735 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9736 btstack_assert(false); 9737 #endif 9738 9739 // check if already in list 9740 btstack_linked_list_iterator_t it; 9741 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9742 while (btstack_linked_list_iterator_has_next(&it)) { 9743 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9744 if (entry->sid != advertising_sid) { 9745 continue; 9746 } 9747 if (entry->address_type != address_type) { 9748 continue; 9749 } 9750 if (memcmp(entry->address, address, 6) != 0) { 9751 continue; 9752 } 9753 // disallow if already scheduled to add 9754 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9755 return ERROR_CODE_COMMAND_DISALLOWED; 9756 } 9757 // still on controller, but scheduled to remove -> re-add 9758 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9759 return ERROR_CODE_SUCCESS; 9760 } 9761 // alloc and add to list 9762 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9763 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9764 entry->sid = advertising_sid; 9765 entry->address_type = address_type; 9766 (void)memcpy(entry->address, address, 6); 9767 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9768 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9769 return ERROR_CODE_SUCCESS; 9770 } 9771 9772 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9773 btstack_linked_list_iterator_t it; 9774 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9775 while (btstack_linked_list_iterator_has_next(&it)){ 9776 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9777 if (entry->sid != advertising_sid) { 9778 continue; 9779 } 9780 if (entry->address_type != address_type) { 9781 continue; 9782 } 9783 if (memcmp(entry->address, address, 6) != 0) { 9784 continue; 9785 } 9786 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9787 // remove from controller if already present 9788 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9789 } else { 9790 // directly remove entry from whitelist 9791 btstack_linked_list_iterator_remove(&it); 9792 btstack_memory_periodic_advertiser_list_entry_free(entry); 9793 } 9794 return ERROR_CODE_SUCCESS; 9795 } 9796 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9797 } 9798 9799 static void hci_periodic_advertiser_list_clear(void){ 9800 btstack_linked_list_iterator_t it; 9801 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9802 while (btstack_linked_list_iterator_has_next(&it)){ 9803 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9804 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9805 // remove from controller if already present 9806 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9807 continue; 9808 } 9809 // directly remove entry from whitelist 9810 btstack_linked_list_iterator_remove(&it); 9811 btstack_memory_periodic_advertiser_list_entry_free(entry); 9812 } 9813 } 9814 9815 uint8_t gap_periodic_advertiser_list_clear(void){ 9816 hci_periodic_advertiser_list_clear(); 9817 hci_run(); 9818 return ERROR_CODE_SUCCESS; 9819 } 9820 9821 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9822 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9823 if (status){ 9824 return status; 9825 } 9826 hci_run(); 9827 return ERROR_CODE_SUCCESS; 9828 } 9829 9830 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9831 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9832 if (status){ 9833 return status; 9834 } 9835 hci_run(); 9836 return ERROR_CODE_SUCCESS; 9837 } 9838 9839 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9840 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9841 // abort if already active 9842 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9843 return ERROR_CODE_COMMAND_DISALLOWED; 9844 } 9845 // store request 9846 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9847 hci_stack->le_periodic_sync_options = options; 9848 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9849 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9850 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9851 hci_stack->le_periodic_sync_skip = skip; 9852 hci_stack->le_periodic_sync_timeout = sync_timeout; 9853 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9854 9855 hci_run(); 9856 return ERROR_CODE_SUCCESS; 9857 } 9858 9859 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9860 // abort if not requested 9861 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9862 return ERROR_CODE_COMMAND_DISALLOWED; 9863 } 9864 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9865 hci_run(); 9866 return ERROR_CODE_SUCCESS; 9867 } 9868 9869 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9870 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9871 return ERROR_CODE_COMMAND_DISALLOWED; 9872 } 9873 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9874 hci_run(); 9875 return ERROR_CODE_SUCCESS; 9876 } 9877 9878 #endif 9879 #endif 9880 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9881 static hci_iso_stream_t * 9882 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9883 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9884 if (iso_stream != NULL){ 9885 iso_stream->iso_type = iso_type; 9886 iso_stream->state = state; 9887 iso_stream->group_id = group_id; 9888 iso_stream->stream_id = stream_id; 9889 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9890 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9891 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9892 } 9893 return iso_stream; 9894 } 9895 9896 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9897 btstack_linked_list_iterator_t it; 9898 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9899 while (btstack_linked_list_iterator_has_next(&it)){ 9900 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9901 if (iso_stream->cis_handle == con_handle ) { 9902 return iso_stream; 9903 } 9904 } 9905 return NULL; 9906 } 9907 9908 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9909 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9910 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9911 btstack_memory_hci_iso_stream_free(iso_stream); 9912 } 9913 9914 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9915 btstack_linked_list_iterator_t it; 9916 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9917 while (btstack_linked_list_iterator_has_next(&it)){ 9918 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9919 if ((iso_stream->group_id == group_id) && 9920 (iso_stream->iso_type == iso_type)){ 9921 btstack_linked_list_iterator_remove(&it); 9922 btstack_memory_hci_iso_stream_free(iso_stream); 9923 } 9924 } 9925 } 9926 9927 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9928 btstack_linked_list_iterator_t it; 9929 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9930 while (btstack_linked_list_iterator_has_next(&it)){ 9931 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9932 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9933 (iso_stream->group_id == group_id)){ 9934 btstack_linked_list_iterator_remove(&it); 9935 btstack_memory_hci_iso_stream_free(iso_stream); 9936 } 9937 } 9938 } 9939 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9940 btstack_linked_list_iterator_t it; 9941 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9942 while (btstack_linked_list_iterator_has_next(&it)){ 9943 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9944 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9945 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9946 } 9947 } 9948 } 9949 9950 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9951 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9952 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9953 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9954 return (sdu_len_offset + 2 + sdu_len) == size; 9955 } 9956 9957 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 9958 if (iso_stream == NULL){ 9959 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 9960 return; 9961 } 9962 9963 if (hci_stack->iso_packet_handler == NULL) { 9964 return; 9965 } 9966 9967 // parse header 9968 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 9969 uint16_t data_total_length = little_endian_read_16(packet, 2); 9970 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 9971 9972 // assert packet is complete 9973 if ((data_total_length + 4u) != size){ 9974 return; 9975 } 9976 9977 if ((pb_flag & 0x01) == 0){ 9978 if (pb_flag == 0x02){ 9979 // The ISO_SDU_Fragment field contains a header and a complete SDU. 9980 if (hci_iso_sdu_complete(packet, size)) { 9981 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9982 } 9983 } else { 9984 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9985 if (size > sizeof(iso_stream->reassembly_buffer)){ 9986 return; 9987 } 9988 memcpy(iso_stream->reassembly_buffer, packet, size); 9989 // fix pb_flag 9990 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9991 iso_stream->reassembly_pos = size; 9992 } 9993 } else { 9994 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 9995 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 9996 if (ts_flag != 0){ 9997 return; 9998 } 9999 // append fragment 10000 if (iso_stream->reassembly_pos == 0){ 10001 return; 10002 } 10003 10004 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10005 // reset reassembly buffer 10006 iso_stream->reassembly_pos = 0; 10007 return; 10008 } 10009 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10010 iso_stream->reassembly_pos += data_total_length; 10011 10012 // deliver if last fragment and SDU complete 10013 if (pb_flag == 0x03){ 10014 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10015 // fix data_total_length 10016 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10017 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10018 } 10019 // reset reassembly buffer 10020 iso_stream->reassembly_pos = 0; 10021 } 10022 } 10023 } 10024 10025 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10026 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10027 uint16_t pos = 0; 10028 event[pos++] = HCI_EVENT_META_GAP; 10029 event[pos++] = 4 + (2 * big->num_bis); 10030 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10031 event[pos++] = status; 10032 event[pos++] = big->big_handle; 10033 event[pos++] = big->num_bis; 10034 uint8_t i; 10035 for (i=0;i<big->num_bis;i++){ 10036 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10037 pos += 2; 10038 } 10039 hci_emit_event(event, pos, 0); 10040 } 10041 10042 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10043 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10044 uint16_t pos = 0; 10045 event[pos++] = HCI_EVENT_META_GAP; 10046 event[pos++] = 4 + (2 * cig->num_cis); 10047 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10048 event[pos++] = status; 10049 event[pos++] = cig->cig_id; 10050 event[pos++] = cig->num_cis; 10051 uint8_t i; 10052 for (i=0;i<cig->num_cis;i++){ 10053 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10054 pos += 2; 10055 } 10056 hci_emit_event(event, pos, 0); 10057 } 10058 10059 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10060 uint16_t pos = 0; 10061 event[pos++] = HCI_EVENT_META_GAP; 10062 event[pos++] = 8; 10063 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10064 event[pos++] = status; 10065 event[pos++] = iso_stream->group_id; 10066 event[pos++] = iso_stream->stream_id; 10067 little_endian_store_16(event, pos, iso_stream->cis_handle); 10068 pos += 2; 10069 little_endian_store_16(event, pos, iso_stream->acl_handle); 10070 pos += 2; 10071 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10072 pos += 2; 10073 event[pos++] = iso_stream->number_of_subevents; 10074 event[pos++] = iso_stream->burst_number_c_to_p; 10075 event[pos++] = iso_stream->burst_number_p_to_c; 10076 event[pos++] = iso_stream->flush_timeout_c_to_p; 10077 event[pos++] = iso_stream->flush_timeout_p_to_c; 10078 return pos; 10079 } 10080 10081 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10082 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10083 // cache data before finalizing struct 10084 uint8_t event [17]; 10085 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10086 btstack_assert(pos <= sizeof(event)); 10087 if (status != ERROR_CODE_SUCCESS){ 10088 hci_iso_stream_finalize(iso_stream); 10089 } 10090 hci_emit_event(event, pos, 0); 10091 } 10092 10093 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10094 uint8_t event [4]; 10095 uint16_t pos = 0; 10096 event[pos++] = HCI_EVENT_META_GAP; 10097 event[pos++] = 2; 10098 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10099 event[pos++] = big->big_handle; 10100 hci_emit_event(event, pos, 0); 10101 } 10102 10103 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10104 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10105 uint16_t pos = 0; 10106 event[pos++] = HCI_EVENT_META_GAP; 10107 event[pos++] = 4; 10108 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10109 event[pos++] = status; 10110 event[pos++] = big_sync->big_handle; 10111 event[pos++] = big_sync->num_bis; 10112 uint8_t i; 10113 for (i=0;i<big_sync->num_bis;i++){ 10114 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10115 pos += 2; 10116 } 10117 hci_emit_event(event, pos, 0); 10118 } 10119 10120 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10121 uint8_t event [4]; 10122 uint16_t pos = 0; 10123 event[pos++] = HCI_EVENT_META_GAP; 10124 event[pos++] = 2; 10125 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10126 event[pos++] = big_handle; 10127 hci_emit_event(event, pos, 0); 10128 } 10129 10130 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10131 uint8_t event[6]; 10132 uint16_t pos = 0; 10133 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10134 event[pos++] = sizeof(event) - 2; 10135 event[pos++] = big->big_handle; 10136 event[pos++] = bis_index; 10137 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10138 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10139 } 10140 10141 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10142 uint8_t event[4]; 10143 uint16_t pos = 0; 10144 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10145 event[pos++] = sizeof(event) - 2; 10146 little_endian_store_16(event, pos, cis_con_handle); 10147 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10148 } 10149 10150 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10151 btstack_linked_list_iterator_t it; 10152 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10153 while (btstack_linked_list_iterator_has_next(&it)){ 10154 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10155 if ( big->big_handle == big_handle ) { 10156 return big; 10157 } 10158 } 10159 return NULL; 10160 } 10161 10162 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10163 btstack_linked_list_iterator_t it; 10164 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10165 while (btstack_linked_list_iterator_has_next(&it)){ 10166 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10167 if ( big_sync->big_handle == big_handle ) { 10168 return big_sync; 10169 } 10170 } 10171 return NULL; 10172 } 10173 10174 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10175 hci_stack->iso_packets_to_queue = num_packets; 10176 } 10177 10178 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10179 btstack_linked_list_iterator_t it; 10180 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10181 while (btstack_linked_list_iterator_has_next(&it)){ 10182 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10183 if ( cig->cig_id == cig_id ) { 10184 return cig; 10185 } 10186 } 10187 return NULL; 10188 } 10189 10190 static void hci_iso_notify_can_send_now(void){ 10191 10192 // BIG 10193 10194 btstack_linked_list_iterator_t it; 10195 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10196 while (btstack_linked_list_iterator_has_next(&it)){ 10197 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10198 // track number completed packet timestamps 10199 if (big->num_completed_timestamp_current_valid){ 10200 big->num_completed_timestamp_current_valid = false; 10201 if (big->num_completed_timestamp_previous_valid){ 10202 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10203 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10204 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10205 big->num_completed_timestamp_previous_ms); 10206 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10207 // to catch up, skip packet on all BIS 10208 uint8_t i; 10209 for (i=0;i<big->num_bis;i++){ 10210 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10211 if (iso_stream){ 10212 iso_stream->num_packets_to_skip++; 10213 } 10214 } 10215 } 10216 } 10217 big->num_completed_timestamp_previous_valid = true; 10218 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10219 } 10220 10221 if (big->can_send_now_requested){ 10222 // check if no outgoing iso packets pending and no can send now have to be emitted 10223 uint8_t i; 10224 bool can_send = true; 10225 uint8_t num_iso_queued_minimum = 0; 10226 for (i=0;i<big->num_bis;i++){ 10227 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10228 if (iso_stream == NULL) continue; 10229 // handle case where individual ISO packet was sent too late: 10230 // for each additionally queued packet, a new one needs to get skipped 10231 if (i==0){ 10232 num_iso_queued_minimum = iso_stream->num_packets_sent; 10233 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10234 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10235 iso_stream->num_packets_to_skip += num_packets_to_skip; 10236 iso_stream->num_packets_sent -= num_packets_to_skip; 10237 } 10238 // check if we can send now 10239 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10240 can_send = false; 10241 break; 10242 } 10243 } 10244 if (can_send){ 10245 // propagate can send now to individual streams 10246 big->can_send_now_requested = false; 10247 for (i=0;i<big->num_bis;i++){ 10248 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10249 iso_stream->emit_ready_to_send = true; 10250 } 10251 } 10252 } 10253 } 10254 10255 if (hci_stack->hci_packet_buffer_reserved) return; 10256 10257 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10258 while (btstack_linked_list_iterator_has_next(&it)){ 10259 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10260 // report bis ready 10261 uint8_t i; 10262 for (i=0;i<big->num_bis;i++){ 10263 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10264 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10265 iso_stream->emit_ready_to_send = false; 10266 hci_emit_bis_can_send_now(big, i); 10267 break; 10268 } 10269 } 10270 } 10271 10272 // CIS 10273 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10274 while (btstack_linked_list_iterator_has_next(&it)) { 10275 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10276 if ((iso_stream->can_send_now_requested) && 10277 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10278 iso_stream->can_send_now_requested = false; 10279 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10280 } 10281 } 10282 } 10283 10284 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10285 // make big handle unique and usuable for big and big sync 10286 if (hci_big_for_handle(big_handle) != NULL){ 10287 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10288 } 10289 if (hci_big_sync_for_handle(big_handle) != NULL){ 10290 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10291 } 10292 if (num_bis == 0){ 10293 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10294 } 10295 if (num_bis > MAX_NR_BIS){ 10296 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10297 } 10298 10299 // reserve ISO Streams 10300 uint8_t i; 10301 uint8_t status = ERROR_CODE_SUCCESS; 10302 for (i=0;i<num_bis;i++){ 10303 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10304 if (iso_stream == NULL) { 10305 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10306 break; 10307 } 10308 } 10309 10310 // free structs on error 10311 if (status != ERROR_CODE_SUCCESS){ 10312 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10313 } 10314 10315 return status; 10316 } 10317 10318 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10319 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10320 if (status != ERROR_CODE_SUCCESS){ 10321 return status; 10322 } 10323 10324 le_audio_big_t * big = storage; 10325 big->big_handle = big_params->big_handle; 10326 big->params = big_params; 10327 big->state = LE_AUDIO_BIG_STATE_CREATE; 10328 big->num_bis = big_params->num_bis; 10329 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10330 10331 hci_run(); 10332 10333 return ERROR_CODE_SUCCESS; 10334 } 10335 10336 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10337 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10338 if (status != ERROR_CODE_SUCCESS){ 10339 return status; 10340 } 10341 10342 le_audio_big_sync_t * big_sync = storage; 10343 big_sync->big_handle = big_sync_params->big_handle; 10344 big_sync->params = big_sync_params; 10345 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10346 big_sync->num_bis = big_sync_params->num_bis; 10347 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10348 10349 hci_run(); 10350 10351 return ERROR_CODE_SUCCESS; 10352 } 10353 10354 uint8_t gap_big_terminate(uint8_t big_handle){ 10355 le_audio_big_t * big = hci_big_for_handle(big_handle); 10356 if (big == NULL){ 10357 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10358 } 10359 switch (big->state){ 10360 case LE_AUDIO_BIG_STATE_CREATE: 10361 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10362 hci_emit_big_terminated(big); 10363 break; 10364 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10365 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10366 break; 10367 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10368 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10369 case LE_AUDIO_BIG_STATE_ACTIVE: 10370 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10371 hci_run(); 10372 break; 10373 default: 10374 return ERROR_CODE_COMMAND_DISALLOWED; 10375 } 10376 return ERROR_CODE_SUCCESS; 10377 } 10378 10379 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10380 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10381 if (big_sync == NULL){ 10382 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10383 } 10384 switch (big_sync->state){ 10385 case LE_AUDIO_BIG_STATE_CREATE: 10386 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10387 hci_emit_big_sync_stopped(big_handle); 10388 break; 10389 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10390 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10391 break; 10392 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10393 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10394 case LE_AUDIO_BIG_STATE_ACTIVE: 10395 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10396 hci_run(); 10397 break; 10398 default: 10399 return ERROR_CODE_COMMAND_DISALLOWED; 10400 } 10401 return ERROR_CODE_SUCCESS; 10402 } 10403 10404 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10405 le_audio_big_t * big = hci_big_for_handle(big_handle); 10406 if (big == NULL){ 10407 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10408 } 10409 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10410 return ERROR_CODE_COMMAND_DISALLOWED; 10411 } 10412 big->can_send_now_requested = true; 10413 hci_iso_notify_can_send_now(); 10414 return ERROR_CODE_SUCCESS; 10415 } 10416 10417 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10418 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10419 if (iso_stream == NULL){ 10420 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10421 } 10422 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10423 return ERROR_CODE_COMMAND_DISALLOWED; 10424 } 10425 iso_stream->can_send_now_requested = true; 10426 hci_iso_notify_can_send_now(); 10427 return ERROR_CODE_SUCCESS; 10428 } 10429 10430 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10431 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10432 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10433 } 10434 if (cig_params->num_cis == 0){ 10435 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10436 } 10437 if (cig_params->num_cis > MAX_NR_CIS){ 10438 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10439 } 10440 10441 // reserve ISO Streams 10442 uint8_t i; 10443 uint8_t status = ERROR_CODE_SUCCESS; 10444 for (i=0;i<cig_params->num_cis;i++){ 10445 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10446 if (iso_stream == NULL) { 10447 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10448 break; 10449 } 10450 } 10451 10452 // free structs on error 10453 if (status != ERROR_CODE_SUCCESS){ 10454 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10455 return status; 10456 } 10457 10458 le_audio_cig_t * cig = storage; 10459 cig->cig_id = cig_params->cig_id; 10460 cig->num_cis = cig_params->num_cis; 10461 cig->params = cig_params; 10462 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10463 for (i=0;i<cig->num_cis;i++){ 10464 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10465 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10466 cig->cis_setup_active[i] = false; 10467 cig->cis_established[i] = false; 10468 } 10469 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10470 10471 hci_run(); 10472 10473 return ERROR_CODE_SUCCESS; 10474 } 10475 10476 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10477 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10478 if (cig == NULL){ 10479 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10480 } 10481 10482 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10483 return ERROR_CODE_COMMAND_DISALLOWED; 10484 } 10485 10486 // store ACL Connection Handles 10487 uint8_t i; 10488 for (i=0;i<cig->num_cis;i++){ 10489 // check that all con handles exist and store 10490 hci_con_handle_t cis_handle = cis_con_handles[i]; 10491 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10492 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10493 } 10494 uint8_t j; 10495 bool found = false; 10496 for (j=0;j<cig->num_cis;j++){ 10497 if (cig->cis_con_handles[j] == cis_handle){ 10498 cig->acl_con_handles[j] = acl_con_handles[j]; 10499 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10500 btstack_assert(iso_stream != NULL); 10501 iso_stream->acl_handle = acl_con_handles[j]; 10502 found = true; 10503 break; 10504 } 10505 } 10506 if (!found){ 10507 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10508 } 10509 } 10510 10511 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10512 hci_run(); 10513 10514 return ERROR_CODE_SUCCESS; 10515 } 10516 10517 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10518 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10519 if (iso_stream == NULL){ 10520 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10521 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10522 } 10523 10524 // set next state and continue 10525 iso_stream->state = state; 10526 hci_run(); 10527 return ERROR_CODE_SUCCESS; 10528 } 10529 10530 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10531 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10532 } 10533 10534 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10535 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10536 } 10537 10538 10539 #endif 10540 #endif /* ENABLE_BLE */ 10541 10542 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10543 void hci_setup_test_connections_fuzz(void){ 10544 hci_connection_t * conn; 10545 10546 // default address: 66:55:44:33:00:01 10547 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10548 10549 // setup Controller info 10550 hci_stack->num_cmd_packets = 255; 10551 hci_stack->acl_packets_total_num = 255; 10552 10553 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10554 addr[5] = 0x01; 10555 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10556 conn->con_handle = addr[5]; 10557 conn->state = RECEIVED_CONNECTION_REQUEST; 10558 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10559 10560 // setup incoming Classic SCO connection with con handle 0x0002 10561 addr[5] = 0x02; 10562 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10563 conn->con_handle = addr[5]; 10564 conn->state = RECEIVED_CONNECTION_REQUEST; 10565 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10566 10567 // setup ready Classic ACL connection with con handle 0x0003 10568 addr[5] = 0x03; 10569 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10570 conn->con_handle = addr[5]; 10571 conn->state = OPEN; 10572 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10573 10574 // setup ready Classic SCO connection with con handle 0x0004 10575 addr[5] = 0x04; 10576 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10577 conn->con_handle = addr[5]; 10578 conn->state = OPEN; 10579 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10580 10581 // setup ready LE ACL connection with con handle 0x005 and public address 10582 addr[5] = 0x05; 10583 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10584 conn->con_handle = addr[5]; 10585 conn->state = OPEN; 10586 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10587 conn->sm_connection.sm_connection_encrypted = 1; 10588 } 10589 10590 void hci_free_connections_fuzz(void){ 10591 btstack_linked_list_iterator_t it; 10592 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10593 while (btstack_linked_list_iterator_has_next(&it)){ 10594 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10595 btstack_linked_list_iterator_remove(&it); 10596 btstack_memory_hci_connection_free(con); 10597 } 10598 } 10599 void hci_simulate_working_fuzz(void){ 10600 hci_stack->le_scanning_param_update = false; 10601 hci_init_done(); 10602 hci_stack->num_cmd_packets = 255; 10603 } 10604 #endif 10605