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_le_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 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 620 switch (address_type){ 621 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 622 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 623 return true; 624 default: 625 return false; 626 } 627 } 628 629 static bool hci_is_le_connection(hci_connection_t * connection){ 630 return hci_is_le_connection_type(connection->address_type); 631 } 632 633 /** 634 * count connections 635 */ 636 static int nr_hci_connections(void){ 637 int count = 0; 638 btstack_linked_item_t *it; 639 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 640 count++; 641 } 642 return count; 643 } 644 645 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 646 647 unsigned int num_packets_sent_classic = 0; 648 unsigned int num_packets_sent_le = 0; 649 650 btstack_linked_item_t *it; 651 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 652 hci_connection_t * connection = (hci_connection_t *) it; 653 if (hci_is_le_connection(connection)){ 654 num_packets_sent_le += connection->num_packets_sent; 655 } 656 if (connection->address_type == BD_ADDR_TYPE_ACL){ 657 num_packets_sent_classic += connection->num_packets_sent; 658 } 659 } 660 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 661 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 662 int free_slots_le = 0; 663 664 if (free_slots_classic < 0){ 665 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); 666 return 0; 667 } 668 669 if (hci_stack->le_acl_packets_total_num){ 670 // if we have LE slots, they are used 671 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 672 if (free_slots_le < 0){ 673 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); 674 return 0; 675 } 676 } else { 677 // otherwise, classic slots are used for LE, too 678 free_slots_classic -= num_packets_sent_le; 679 if (free_slots_classic < 0){ 680 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); 681 return 0; 682 } 683 } 684 685 switch (address_type){ 686 case BD_ADDR_TYPE_UNKNOWN: 687 log_error("hci_number_free_acl_slots: unknown address type"); 688 return 0; 689 690 case BD_ADDR_TYPE_ACL: 691 return (uint16_t) free_slots_classic; 692 693 default: 694 if (hci_stack->le_acl_packets_total_num > 0){ 695 return (uint16_t) free_slots_le; 696 } 697 return (uint16_t) free_slots_classic; 698 } 699 } 700 701 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 702 // get connection type 703 hci_connection_t * connection = hci_connection_for_handle(con_handle); 704 if (!connection){ 705 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 706 return 0; 707 } 708 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 709 } 710 711 #ifdef ENABLE_CLASSIC 712 static int hci_number_free_sco_slots(void){ 713 unsigned int num_sco_packets_sent = 0; 714 btstack_linked_item_t *it; 715 if (hci_stack->synchronous_flow_control_enabled){ 716 // explicit flow control 717 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 718 hci_connection_t * connection = (hci_connection_t *) it; 719 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 720 num_sco_packets_sent += connection->num_packets_sent; 721 } 722 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 723 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 724 return 0; 725 } 726 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 727 } else { 728 // implicit flow control 729 int num_ready = 0; 730 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 731 hci_connection_t * connection = (hci_connection_t *) it; 732 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 733 if (connection->sco_tx_ready == 0) continue; 734 num_ready++; 735 } 736 return num_ready; 737 } 738 } 739 #endif 740 741 // only used to send HCI Host Number Completed Packets 742 static int hci_can_send_comand_packet_transport(void){ 743 if (hci_stack->hci_packet_buffer_reserved) return 0; 744 745 // check for async hci transport implementations 746 if (hci_stack->hci_transport->can_send_packet_now){ 747 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 748 return 0; 749 } 750 } 751 return 1; 752 } 753 754 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 755 bool hci_can_send_command_packet_now(void){ 756 if (hci_can_send_comand_packet_transport() == 0) return false; 757 return hci_stack->num_cmd_packets > 0u; 758 } 759 760 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 761 // check for async hci transport implementations 762 if (!hci_stack->hci_transport->can_send_packet_now) return true; 763 return hci_stack->hci_transport->can_send_packet_now(packet_type); 764 } 765 766 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 767 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 768 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 769 } 770 771 bool hci_can_send_acl_le_packet_now(void){ 772 if (hci_stack->hci_packet_buffer_reserved) return false; 773 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 774 } 775 776 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 777 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 778 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 779 } 780 781 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 782 if (hci_stack->hci_packet_buffer_reserved) return false; 783 return hci_can_send_prepared_acl_packet_now(con_handle); 784 } 785 786 #ifdef ENABLE_CLASSIC 787 bool hci_can_send_acl_classic_packet_now(void){ 788 if (hci_stack->hci_packet_buffer_reserved) return false; 789 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 790 } 791 792 bool hci_can_send_prepared_sco_packet_now(void){ 793 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 794 if (hci_have_usb_transport()){ 795 return hci_stack->sco_can_send_now; 796 } else { 797 return hci_number_free_sco_slots() > 0; 798 } 799 } 800 801 bool hci_can_send_sco_packet_now(void){ 802 if (hci_stack->hci_packet_buffer_reserved) return false; 803 return hci_can_send_prepared_sco_packet_now(); 804 } 805 806 void hci_request_sco_can_send_now_event(void){ 807 hci_stack->sco_waiting_for_can_send_now = 1; 808 hci_notify_if_sco_can_send_now(); 809 } 810 #endif 811 812 // used for internal checks in l2cap.c 813 bool hci_is_packet_buffer_reserved(void){ 814 return hci_stack->hci_packet_buffer_reserved; 815 } 816 817 // reserves outgoing packet buffer. 818 // @return 1 if successful 819 bool hci_reserve_packet_buffer(void){ 820 if (hci_stack->hci_packet_buffer_reserved) { 821 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 822 return false; 823 } 824 hci_stack->hci_packet_buffer_reserved = true; 825 return true; 826 } 827 828 void hci_release_packet_buffer(void){ 829 hci_stack->hci_packet_buffer_reserved = false; 830 } 831 832 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 833 static int hci_transport_synchronous(void){ 834 return hci_stack->hci_transport->can_send_packet_now == NULL; 835 } 836 837 // used for debugging 838 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 839 static void hci_controller_dump_packets(void){ 840 // format: "{handle:04x}:{count:02d} " 841 char summaries[3][7 * 8 + 1]; 842 uint16_t totals[3]; 843 uint8_t index; 844 for (index = 0 ; index < 3 ; index++){ 845 summaries[index][0] = 0; 846 totals[index] = 0; 847 } 848 btstack_linked_item_t *it; 849 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 850 hci_connection_t * connection = (hci_connection_t *) it; 851 switch (connection->address_type){ 852 case BD_ADDR_TYPE_ACL: 853 index = 0; 854 break; 855 case BD_ADDR_TYPE_SCO: 856 index = 2; 857 break; 858 default: 859 index = 1; 860 break; 861 } 862 totals[index] += connection->num_packets_sent; 863 char item_text[10]; 864 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 865 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 866 } 867 for (index = 0 ; index < 3 ; index++){ 868 if (summaries[index][0] == 0){ 869 summaries[index][0] = '-'; 870 summaries[index][1] = 0; 871 } 872 } 873 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]); 874 } 875 #endif 876 877 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 878 879 // 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); 880 881 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 882 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 883 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 884 max_acl_data_packet_length = hci_stack->le_data_packets_length; 885 } 886 887 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 888 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 889 max_acl_data_packet_length = connection->le_max_tx_octets; 890 } 891 #endif 892 893 log_debug("hci_send_acl_packet_fragments entered"); 894 895 uint8_t status = ERROR_CODE_SUCCESS; 896 // multiple packets could be send on a synchronous HCI transport 897 while (true){ 898 899 log_debug("hci_send_acl_packet_fragments loop entered"); 900 901 // get current data 902 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 903 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 904 bool more_fragments = false; 905 906 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 907 if (current_acl_data_packet_length > max_acl_data_packet_length){ 908 more_fragments = true; 909 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 910 } 911 912 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 913 if (acl_header_pos > 0u){ 914 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 915 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 916 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 917 } 918 919 // update header len 920 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 921 922 // count packet 923 connection->num_packets_sent++; 924 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 925 926 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 927 if (more_fragments){ 928 // update start of next fragment to send 929 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 930 } else { 931 // done 932 hci_stack->acl_fragmentation_pos = 0; 933 hci_stack->acl_fragmentation_total_size = 0; 934 } 935 936 // send packet 937 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 938 const int size = current_acl_data_packet_length + 4; 939 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 940 hci_stack->acl_fragmentation_tx_active = 1; 941 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 942 if (err != 0){ 943 // no error from HCI Transport expected 944 status = ERROR_CODE_HARDWARE_FAILURE; 945 } 946 947 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 948 hci_controller_dump_packets(); 949 #endif 950 951 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 952 953 // done yet? 954 if (!more_fragments) break; 955 956 // can send more? 957 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 958 } 959 960 log_debug("hci_send_acl_packet_fragments loop over"); 961 962 // release buffer now for synchronous transport 963 if (hci_transport_synchronous()){ 964 hci_stack->acl_fragmentation_tx_active = 0; 965 hci_release_packet_buffer(); 966 hci_emit_transport_packet_sent(); 967 } 968 969 return status; 970 } 971 972 // pre: caller has reserved the packet buffer 973 uint8_t hci_send_acl_packet_buffer(int size){ 974 btstack_assert(hci_stack->hci_packet_buffer_reserved); 975 976 uint8_t * packet = hci_stack->hci_packet_buffer; 977 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 978 979 hci_connection_t *connection = hci_connection_for_handle( con_handle); 980 if (!connection) { 981 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 982 hci_release_packet_buffer(); 983 hci_emit_transport_packet_sent(); 984 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 985 } 986 987 // check for free places on Bluetooth module 988 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 989 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 990 hci_release_packet_buffer(); 991 hci_emit_transport_packet_sent(); 992 return BTSTACK_ACL_BUFFERS_FULL; 993 } 994 995 #ifdef ENABLE_CLASSIC 996 hci_connection_timestamp(connection); 997 #endif 998 999 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 1000 1001 // setup data 1002 hci_stack->acl_fragmentation_total_size = size; 1003 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1004 1005 return hci_send_acl_packet_fragments(connection); 1006 } 1007 1008 #ifdef ENABLE_CLASSIC 1009 // pre: caller has reserved the packet buffer 1010 uint8_t hci_send_sco_packet_buffer(int size){ 1011 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1012 1013 uint8_t * packet = hci_stack->hci_packet_buffer; 1014 1015 // skip checks in loopback mode 1016 if (!hci_stack->loopback_mode){ 1017 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1018 1019 // check for free places on Bluetooth module 1020 if (!hci_can_send_prepared_sco_packet_now()) { 1021 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1022 hci_release_packet_buffer(); 1023 hci_emit_transport_packet_sent(); 1024 return BTSTACK_ACL_BUFFERS_FULL; 1025 } 1026 1027 // track send packet in connection struct 1028 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1029 if (!connection) { 1030 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1031 hci_release_packet_buffer(); 1032 hci_emit_transport_packet_sent(); 1033 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1034 } 1035 1036 if (hci_have_usb_transport()){ 1037 // token used 1038 hci_stack->sco_can_send_now = false; 1039 } else { 1040 if (hci_stack->synchronous_flow_control_enabled){ 1041 connection->num_packets_sent++; 1042 } else { 1043 connection->sco_tx_ready--; 1044 } 1045 } 1046 } 1047 1048 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1049 1050 #ifdef HAVE_SCO_TRANSPORT 1051 hci_stack->sco_transport->send_packet(packet, size); 1052 hci_release_packet_buffer(); 1053 hci_emit_transport_packet_sent(); 1054 1055 return 0; 1056 #else 1057 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1058 if (hci_transport_synchronous()){ 1059 hci_release_packet_buffer(); 1060 hci_emit_transport_packet_sent(); 1061 } 1062 1063 if (err != 0){ 1064 return ERROR_CODE_HARDWARE_FAILURE; 1065 } 1066 return ERROR_CODE_SUCCESS; 1067 #endif 1068 } 1069 #endif 1070 1071 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1072 static uint8_t hci_send_iso_packet_fragments(void){ 1073 1074 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1075 uint8_t status = ERROR_CODE_SUCCESS; 1076 // multiple packets could be send on a synchronous HCI transport 1077 while (true){ 1078 1079 // get current data 1080 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1081 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1082 bool more_fragments = false; 1083 1084 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1085 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1086 more_fragments = true; 1087 current_iso_data_packet_length = max_iso_data_packet_length; 1088 } 1089 1090 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1091 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1092 uint8_t pb_flags; 1093 if (iso_header_pos == 0u){ 1094 // first fragment, keep TS field 1095 pb_flags = more_fragments ? 0x00 : 0x02; 1096 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1097 } else { 1098 // later fragment, drop TS field 1099 pb_flags = more_fragments ? 0x01 : 0x03; 1100 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1101 } 1102 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1103 1104 // update header len 1105 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1106 1107 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1108 if (more_fragments){ 1109 // update start of next fragment to send 1110 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1111 } else { 1112 // done 1113 hci_stack->iso_fragmentation_pos = 0; 1114 hci_stack->iso_fragmentation_total_size = 0; 1115 } 1116 1117 // send packet 1118 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1119 const int size = current_iso_data_packet_length + 4; 1120 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1121 hci_stack->iso_fragmentation_tx_active = true; 1122 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1123 if (err != 0){ 1124 // no error from HCI Transport expected 1125 status = ERROR_CODE_HARDWARE_FAILURE; 1126 } 1127 1128 // done yet? 1129 if (!more_fragments) break; 1130 1131 // can send more? 1132 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1133 } 1134 1135 // release buffer now for synchronous transport 1136 if (hci_transport_synchronous()){ 1137 hci_stack->iso_fragmentation_tx_active = false; 1138 hci_release_packet_buffer(); 1139 hci_emit_transport_packet_sent(); 1140 } 1141 1142 return status; 1143 } 1144 1145 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1146 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1147 1148 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1149 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1150 if (iso_stream == NULL){ 1151 hci_release_packet_buffer(); 1152 hci_iso_notify_can_send_now(); 1153 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1154 } 1155 1156 // TODO: check for space on controller 1157 1158 // skip iso packets if needed 1159 if (iso_stream->num_packets_to_skip > 0){ 1160 iso_stream->num_packets_to_skip--; 1161 // pretend it was processed and trigger next one 1162 hci_release_packet_buffer(); 1163 hci_iso_notify_can_send_now(); 1164 return ERROR_CODE_SUCCESS; 1165 } 1166 1167 // track outgoing packet sent 1168 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1169 iso_stream->num_packets_sent++; 1170 1171 // setup data 1172 hci_stack->iso_fragmentation_total_size = size; 1173 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1174 1175 return hci_send_iso_packet_fragments(); 1176 } 1177 #endif 1178 1179 static void acl_handler(uint8_t *packet, uint16_t size){ 1180 1181 // get info 1182 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1183 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1184 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1185 uint16_t acl_length = READ_ACL_LENGTH(packet); 1186 1187 // ignore non-registered handle 1188 if (!conn){ 1189 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1190 return; 1191 } 1192 1193 // assert packet is complete 1194 if ((acl_length + 4u) != size){ 1195 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1196 return; 1197 } 1198 1199 #ifdef ENABLE_CLASSIC 1200 // update idle timestamp 1201 hci_connection_timestamp(conn); 1202 #endif 1203 1204 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1205 hci_stack->host_completed_packets = 1; 1206 conn->num_packets_completed++; 1207 #endif 1208 1209 // handle different packet types 1210 switch (acl_flags & 0x03u) { 1211 1212 case 0x01: // continuation fragment 1213 1214 // sanity checks 1215 if (conn->acl_recombination_pos == 0u) { 1216 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1217 return; 1218 } 1219 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1220 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1221 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1222 conn->acl_recombination_pos = 0; 1223 return; 1224 } 1225 1226 // append fragment payload (header already stored) 1227 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1228 &packet[4], acl_length); 1229 conn->acl_recombination_pos += acl_length; 1230 1231 // forward complete L2CAP packet if complete. 1232 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1233 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1234 // reset recombination buffer 1235 conn->acl_recombination_length = 0; 1236 conn->acl_recombination_pos = 0; 1237 } 1238 break; 1239 1240 case 0x02: { // first fragment 1241 1242 // sanity check 1243 if (conn->acl_recombination_pos) { 1244 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1245 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1246 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1247 } 1248 conn->acl_recombination_pos = 0; 1249 } 1250 1251 // peek into L2CAP packet! 1252 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1253 1254 // compare fragment size to L2CAP packet size 1255 if (acl_length >= (l2cap_length + 4u)){ 1256 // forward fragment as L2CAP packet 1257 hci_emit_acl_packet(packet, acl_length + 4u); 1258 } else { 1259 1260 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1261 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1262 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1263 return; 1264 } 1265 1266 // store first fragment and tweak acl length for complete package 1267 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1268 packet, acl_length + 4u); 1269 conn->acl_recombination_pos = acl_length + 4u; 1270 conn->acl_recombination_length = l2cap_length; 1271 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1272 } 1273 break; 1274 1275 } 1276 default: 1277 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1278 return; 1279 } 1280 1281 // execute main loop 1282 hci_run(); 1283 } 1284 1285 static void hci_connection_stop_timer(hci_connection_t * conn){ 1286 btstack_run_loop_remove_timer(&conn->timeout); 1287 #ifdef ENABLE_CLASSIC 1288 btstack_run_loop_remove_timer(&conn->timeout_sco); 1289 #endif 1290 } 1291 1292 static void hci_shutdown_connection(hci_connection_t *conn){ 1293 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1294 1295 #ifdef ENABLE_CLASSIC 1296 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1297 bd_addr_type_t addr_type = conn->address_type; 1298 #endif 1299 #ifdef HAVE_SCO_TRANSPORT 1300 hci_con_handle_t con_handle = conn->con_handle; 1301 #endif 1302 #endif 1303 1304 hci_connection_stop_timer(conn); 1305 1306 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1307 btstack_memory_hci_connection_free( conn ); 1308 1309 // now it's gone 1310 hci_emit_nr_connections_changed(); 1311 1312 #ifdef ENABLE_CLASSIC 1313 #ifdef ENABLE_SCO_OVER_HCI 1314 // update SCO 1315 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1316 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1317 } 1318 #endif 1319 #ifdef HAVE_SCO_TRANSPORT 1320 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1321 hci_stack->sco_transport->close(con_handle); 1322 } 1323 #endif 1324 #endif 1325 } 1326 1327 #ifdef ENABLE_CLASSIC 1328 1329 static const uint16_t hci_acl_packet_type_sizes[] = { 1330 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1331 HCI_ACL_DH1_SIZE, 0, 0, 0, 1332 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1333 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1334 }; 1335 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1336 0, // 3 slot packets 1337 1, // 5 slot packets 1338 25, // EDR 2 mpbs 1339 26, // EDR 3 mbps 1340 39, // 3 slot EDR packts 1341 40, // 5 slot EDR packet 1342 }; 1343 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1344 0x0f00, // 3 slot packets 1345 0xf000, // 5 slot packets 1346 0x1102, // EDR 2 mpbs 1347 0x2204, // EDR 3 mbps 1348 0x0300, // 3 slot EDR packts 1349 0x3000, // 5 slot EDR packet 1350 }; 1351 1352 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1353 // enable packet types based on size 1354 uint16_t packet_types = 0; 1355 unsigned int i; 1356 for (i=0;i<16;i++){ 1357 if (hci_acl_packet_type_sizes[i] == 0) continue; 1358 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1359 packet_types |= 1 << i; 1360 } 1361 } 1362 // disable packet types due to missing local supported features 1363 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1364 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1365 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1366 if (feature_set) continue; 1367 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1368 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1369 } 1370 return packet_types; 1371 } 1372 1373 uint16_t hci_usable_acl_packet_types(void){ 1374 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1375 // flip bits for "may not be used" 1376 return active_packet_types ^ 0x3306; 1377 } 1378 1379 void hci_enable_acl_packet_types(uint16_t packet_types){ 1380 hci_stack->enabled_packet_types_acl = packet_types; 1381 } 1382 1383 static const struct { 1384 uint8_t feature_index; 1385 uint16_t feature_packet_mask; 1386 } hci_sco_packet_type_feature_requirements[] = { 1387 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1388 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1389 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1390 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1391 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1392 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1393 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1394 }; 1395 1396 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1397 static const struct { 1398 uint16_t type; 1399 uint16_t payload_length; 1400 } hci_sco_packet_type_to_payload_length[] = { 1401 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1402 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1403 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1404 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1405 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1406 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1407 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1408 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1409 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1410 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1411 }; 1412 1413 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1414 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1415 unsigned int i; 1416 // disable packet types due to missing local supported features 1417 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1418 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1419 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1420 if (feature_set) continue; 1421 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); 1422 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1423 } 1424 return packet_types; 1425 } 1426 1427 uint16_t hci_usable_sco_packet_types(void){ 1428 return hci_stack->usable_packet_types_sco; 1429 } 1430 1431 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1432 uint8_t i; 1433 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1434 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1435 return hci_sco_packet_type_to_payload_length[i].payload_length; 1436 } 1437 } 1438 return 0; 1439 } 1440 1441 #endif 1442 1443 uint8_t* hci_get_outgoing_packet_buffer(void){ 1444 // hci packet buffer is >= acl data packet length 1445 return hci_stack->hci_packet_buffer; 1446 } 1447 1448 uint16_t hci_max_acl_data_packet_length(void){ 1449 return hci_stack->acl_data_packet_length; 1450 } 1451 1452 #ifdef ENABLE_CLASSIC 1453 bool hci_extended_sco_link_supported(void){ 1454 // No. 31, byte 3, bit 7 1455 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1456 } 1457 #endif 1458 1459 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1460 // No. 54, byte 6, bit 6 1461 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1462 } 1463 1464 #ifdef ENABLE_CLASSIC 1465 static bool gap_ssp_supported(void){ 1466 // No. 51, byte 6, bit 3 1467 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1468 } 1469 #endif 1470 1471 bool hci_classic_supported(void){ 1472 #ifdef ENABLE_CLASSIC 1473 // No. 37, byte 4, bit 5, = No BR/EDR Support 1474 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1475 #else 1476 return false; 1477 #endif 1478 } 1479 1480 bool hci_le_supported(void){ 1481 #ifdef ENABLE_BLE 1482 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1483 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1484 #else 1485 return false; 1486 #endif 1487 } 1488 1489 static bool hci_command_supported(uint8_t command_index){ 1490 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1491 } 1492 1493 #ifdef ENABLE_BLE 1494 1495 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1496 static bool hci_extended_advertising_supported(void){ 1497 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1498 } 1499 #endif 1500 1501 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1502 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1503 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1504 } else { 1505 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1506 } 1507 } 1508 1509 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1510 *addr_type = hci_stack->le_own_addr_type; 1511 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1512 } 1513 1514 #ifdef ENABLE_LE_PERIPHERAL 1515 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1516 *addr_type = hci_stack->le_advertisements_own_addr_type; 1517 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1518 }; 1519 #endif 1520 1521 #ifdef ENABLE_LE_CENTRAL 1522 1523 /** 1524 * @brief Get own addr type and address used for LE connections (Central) 1525 */ 1526 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1527 *addr_type = hci_stack->le_connection_own_addr_type; 1528 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1529 } 1530 1531 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1532 1533 uint16_t offset = 3; 1534 uint8_t num_reports = packet[offset]; 1535 offset += 1; 1536 1537 uint16_t i; 1538 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1539 for (i=0; (i<num_reports) && (offset < size);i++){ 1540 // sanity checks on data_length: 1541 uint8_t data_length = packet[offset + 8]; 1542 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1543 if ((offset + 9u + data_length + 1u) > size) return; 1544 // setup event 1545 uint8_t event_size = 10u + data_length; 1546 uint16_t pos = 0; 1547 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1548 event[pos++] = event_size; 1549 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1550 offset += 8; 1551 pos += 8; 1552 event[pos++] = packet[offset + 1 + data_length]; // rssi 1553 event[pos++] = data_length; 1554 offset++; 1555 (void)memcpy(&event[pos], &packet[offset], data_length); 1556 pos += data_length; 1557 offset += data_length + 1u; // rssi 1558 hci_emit_event(event, pos, 1); 1559 } 1560 } 1561 1562 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1563 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1564 uint16_t offset = 3; 1565 uint8_t num_reports = packet[offset++]; 1566 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1567 uint8_t i; 1568 for (i=0; (i<num_reports) && (offset < size);i++){ 1569 // sanity checks on data_length: 1570 uint16_t data_length = packet[offset + 23]; 1571 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1572 if ((offset + 24u + data_length) > size) return; 1573 uint16_t event_type = little_endian_read_16(packet, offset); 1574 offset += 2; 1575 if ((event_type & 0x10) != 0) { 1576 // setup legacy event 1577 uint8_t legacy_event_type; 1578 switch (event_type){ 1579 case 0b0010011: 1580 // ADV_IND 1581 legacy_event_type = 0; 1582 break; 1583 case 0b0010101: 1584 // ADV_DIRECT_IND 1585 legacy_event_type = 1; 1586 break; 1587 case 0b0010010: 1588 // ADV_SCAN_IND 1589 legacy_event_type = 2; 1590 break; 1591 case 0b0010000: 1592 // ADV_NONCONN_IND 1593 legacy_event_type = 3; 1594 break; 1595 case 0b0011011: 1596 case 0b0011010: 1597 // SCAN_RSP 1598 legacy_event_type = 4; 1599 break; 1600 default: 1601 legacy_event_type = 0; 1602 break; 1603 } 1604 uint16_t pos = 0; 1605 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1606 event[pos++] = 10u + data_length; 1607 event[pos++] = legacy_event_type; 1608 // copy address type + address 1609 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1610 offset += 7; 1611 pos += 7; 1612 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1613 offset += 4; 1614 // copy rssi 1615 event[pos++] = packet[offset++]; 1616 // skip periodic advertising interval and direct address 1617 offset += 9; 1618 // copy data len + data; 1619 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1620 pos += 1 +data_length; 1621 offset += 1+ data_length; 1622 hci_emit_event(event, pos, 1); 1623 } else { 1624 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1625 uint8_t report_len = 24 + data_length; 1626 event[1] = report_len; 1627 little_endian_store_16(event, 2, event_type); 1628 memcpy(&event[4], &packet[offset], report_len); 1629 offset += report_len; 1630 hci_emit_event(event, 2 + report_len, 1); 1631 } 1632 } 1633 } 1634 #endif 1635 1636 #endif 1637 #endif 1638 1639 #ifdef ENABLE_BLE 1640 #ifdef ENABLE_LE_PERIPHERAL 1641 static void hci_update_advertisements_enabled_for_current_roles(void){ 1642 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1643 // get number of active le slave connections 1644 int num_slave_connections = 0; 1645 btstack_linked_list_iterator_t it; 1646 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1647 while (btstack_linked_list_iterator_has_next(&it)){ 1648 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1649 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1650 if (con->state != OPEN) continue; 1651 if (con->role != HCI_ROLE_SLAVE) continue; 1652 if (!hci_is_le_connection(con)) continue; 1653 num_slave_connections++; 1654 } 1655 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1656 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1657 } else { 1658 hci_stack->le_advertisements_enabled_for_current_roles = false; 1659 } 1660 } 1661 #endif 1662 #endif 1663 1664 #ifdef ENABLE_CLASSIC 1665 static void gap_run_set_local_name(void){ 1666 hci_reserve_packet_buffer(); 1667 uint8_t * packet = hci_stack->hci_packet_buffer; 1668 // construct HCI Command and send 1669 uint16_t opcode = hci_write_local_name.opcode; 1670 hci_stack->last_cmd_opcode = opcode; 1671 packet[0] = opcode & 0xff; 1672 packet[1] = opcode >> 8; 1673 packet[2] = DEVICE_NAME_LEN; 1674 memset(&packet[3], 0, DEVICE_NAME_LEN); 1675 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1676 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1677 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1678 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1679 // expand '00:00:00:00:00:00' in name with bd_addr 1680 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1681 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1682 } 1683 1684 static void gap_run_set_eir_data(void){ 1685 hci_reserve_packet_buffer(); 1686 uint8_t * packet = hci_stack->hci_packet_buffer; 1687 // construct HCI Command in-place and send 1688 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1689 hci_stack->last_cmd_opcode = opcode; 1690 uint16_t offset = 0; 1691 packet[offset++] = opcode & 0xff; 1692 packet[offset++] = opcode >> 8; 1693 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1694 packet[offset++] = 0; // FEC not required 1695 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1696 if (hci_stack->eir_data){ 1697 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1698 ad_context_t context; 1699 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1700 uint8_t data_type = ad_iterator_get_data_type(&context); 1701 uint8_t size = ad_iterator_get_data_len(&context); 1702 const uint8_t *data = ad_iterator_get_data(&context); 1703 // copy item 1704 packet[offset++] = size + 1; 1705 packet[offset++] = data_type; 1706 memcpy(&packet[offset], data, size); 1707 // update name item 1708 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1709 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1710 } 1711 offset += size; 1712 } 1713 } else { 1714 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1715 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1716 packet[offset++] = bytes_to_copy + 1; 1717 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1718 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1719 // expand '00:00:00:00:00:00' in name with bd_addr 1720 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1721 } 1722 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1723 } 1724 1725 static void hci_run_gap_tasks_classic(void){ 1726 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1727 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1728 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1729 return; 1730 } 1731 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1732 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1733 gap_run_set_local_name(); 1734 return; 1735 } 1736 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1737 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1738 gap_run_set_eir_data(); 1739 return; 1740 } 1741 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1742 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1743 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1744 return; 1745 } 1746 // write page scan activity 1747 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1748 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1749 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1750 return; 1751 } 1752 // write page scan type 1753 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1754 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1755 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1756 return; 1757 } 1758 // write page timeout 1759 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1760 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1761 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1762 return; 1763 } 1764 // send scan enable 1765 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1766 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1767 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1768 return; 1769 } 1770 // send write scan activity 1771 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1772 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1773 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1774 return; 1775 } 1776 // send write inquiry transmit power level 1777 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1778 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1779 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1780 return; 1781 } 1782 } 1783 #endif 1784 1785 #ifndef HAVE_HOST_CONTROLLER_API 1786 1787 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1788 if (!hci_stack->config) return 0; 1789 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1790 // Limit baud rate for Broadcom chipsets to 3 mbps 1791 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1792 baud_rate = 3000000; 1793 } 1794 return baud_rate; 1795 } 1796 1797 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1798 UNUSED(ds); 1799 1800 switch (hci_stack->substate){ 1801 case HCI_INIT_W4_SEND_RESET: 1802 log_info("Resend HCI Reset"); 1803 hci_stack->substate = HCI_INIT_SEND_RESET; 1804 hci_stack->num_cmd_packets = 1; 1805 hci_run(); 1806 break; 1807 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1808 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1809 if (hci_stack->hci_transport->reset_link){ 1810 hci_stack->hci_transport->reset_link(); 1811 } 1812 1813 /* fall through */ 1814 1815 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1816 log_info("Resend HCI Reset - CSR Warm Boot"); 1817 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1818 hci_stack->num_cmd_packets = 1; 1819 hci_run(); 1820 break; 1821 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1822 if (hci_stack->hci_transport->set_baudrate){ 1823 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1824 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1825 hci_stack->hci_transport->set_baudrate(baud_rate); 1826 } 1827 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1828 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1829 if (hci_stack->hci_transport->reset_link){ 1830 log_info("Link Reset"); 1831 hci_stack->hci_transport->reset_link(); 1832 } 1833 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1834 hci_run(); 1835 } 1836 break; 1837 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1838 // otherwise continue 1839 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1840 hci_send_cmd(&hci_read_local_supported_commands); 1841 break; 1842 default: 1843 break; 1844 } 1845 } 1846 #endif 1847 1848 static void hci_initializing_next_state(void){ 1849 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1850 } 1851 1852 static void hci_init_done(void){ 1853 // done. tell the app 1854 log_info("hci_init_done -> HCI_STATE_WORKING"); 1855 hci_stack->state = HCI_STATE_WORKING; 1856 hci_emit_state(); 1857 } 1858 1859 // assumption: hci_can_send_command_packet_now() == true 1860 static void hci_initializing_run(void){ 1861 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1862 1863 if (!hci_can_send_command_packet_now()) return; 1864 1865 #ifndef HAVE_HOST_CONTROLLER_API 1866 bool need_baud_change = hci_stack->config 1867 && hci_stack->chipset 1868 && hci_stack->chipset->set_baudrate_command 1869 && hci_stack->hci_transport->set_baudrate 1870 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1871 #endif 1872 1873 switch (hci_stack->substate){ 1874 case HCI_INIT_SEND_RESET: 1875 hci_state_reset(); 1876 1877 #ifndef HAVE_HOST_CONTROLLER_API 1878 // prepare reset if command complete not received in 100ms 1879 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1880 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1881 btstack_run_loop_add_timer(&hci_stack->timeout); 1882 #endif 1883 // send command 1884 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1885 hci_send_cmd(&hci_reset); 1886 break; 1887 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1888 hci_send_cmd(&hci_read_local_version_information); 1889 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1890 break; 1891 1892 #ifndef HAVE_HOST_CONTROLLER_API 1893 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1894 hci_state_reset(); 1895 // prepare reset if command complete not received in 100ms 1896 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1897 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1898 btstack_run_loop_add_timer(&hci_stack->timeout); 1899 // send command 1900 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1901 hci_send_cmd(&hci_reset); 1902 break; 1903 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1904 hci_state_reset(); 1905 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1906 hci_send_cmd(&hci_reset); 1907 break; 1908 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1909 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1910 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1911 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1912 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1913 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1914 break; 1915 } 1916 case HCI_INIT_SET_BD_ADDR: 1917 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1918 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1919 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1920 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1921 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1922 break; 1923 case HCI_INIT_SEND_READ_LOCAL_NAME: 1924 #ifdef ENABLE_CLASSIC 1925 hci_send_cmd(&hci_read_local_name); 1926 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1927 break; 1928 #endif 1929 /* fall through */ 1930 1931 case HCI_INIT_SEND_BAUD_CHANGE: 1932 if (need_baud_change) { 1933 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1934 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1935 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1936 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1937 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1938 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1939 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1940 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1941 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1942 btstack_run_loop_add_timer(&hci_stack->timeout); 1943 } 1944 break; 1945 } 1946 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1947 1948 /* fall through */ 1949 1950 case HCI_INIT_CUSTOM_INIT: 1951 case HCI_INIT_CUSTOM_PRE_INIT: 1952 // Custom initialization 1953 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1954 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1955 bool send_cmd = false; 1956 switch (hci_stack->chipset_result){ 1957 case BTSTACK_CHIPSET_VALID_COMMAND: 1958 send_cmd = true; 1959 switch (hci_stack->substate){ 1960 case HCI_INIT_CUSTOM_INIT: 1961 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1962 break; 1963 case HCI_INIT_CUSTOM_PRE_INIT: 1964 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1965 break; 1966 default: 1967 btstack_assert(false); 1968 break; 1969 } 1970 break; 1971 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1972 send_cmd = true; 1973 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1974 log_info("CSR Warm Boot"); 1975 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1976 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1977 btstack_run_loop_add_timer(&hci_stack->timeout); 1978 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1979 && hci_stack->config 1980 && hci_stack->chipset 1981 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1982 && hci_stack->hci_transport->set_baudrate 1983 && hci_transport_uart_get_main_baud_rate()){ 1984 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1985 } else { 1986 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1987 } 1988 break; 1989 default: 1990 break; 1991 } 1992 1993 if (send_cmd){ 1994 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1995 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1996 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1997 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1998 break; 1999 } 2000 log_info("Init script done"); 2001 2002 // Custom Pre-Init complete, start regular init with HCI Reset 2003 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2004 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2005 hci_send_cmd(&hci_reset); 2006 break; 2007 } 2008 2009 // Init script download on Broadcom chipsets causes: 2010 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2011 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2012 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2013 2014 // - baud rate to reset, restore UART baud rate if needed 2015 if (need_baud_change) { 2016 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2017 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2018 hci_stack->hci_transport->set_baudrate(baud_rate); 2019 } 2020 2021 uint16_t bcm_delay_ms = 300; 2022 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2023 // -> Work around: wait here. 2024 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2025 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2026 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2027 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2028 btstack_run_loop_add_timer(&hci_stack->timeout); 2029 break; 2030 } 2031 } 2032 #endif 2033 /* fall through */ 2034 2035 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2036 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2037 hci_send_cmd(&hci_read_local_supported_commands); 2038 break; 2039 case HCI_INIT_READ_BD_ADDR: 2040 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2041 hci_send_cmd(&hci_read_bd_addr); 2042 break; 2043 case HCI_INIT_READ_BUFFER_SIZE: 2044 // only read buffer size if supported 2045 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2046 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2047 hci_send_cmd(&hci_read_buffer_size); 2048 break; 2049 } 2050 2051 /* fall through */ 2052 2053 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2054 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2055 hci_send_cmd(&hci_read_local_supported_features); 2056 break; 2057 2058 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2059 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2060 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2061 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2062 break; 2063 case HCI_INIT_HOST_BUFFER_SIZE: 2064 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2065 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2066 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2067 break; 2068 #endif 2069 2070 case HCI_INIT_SET_EVENT_MASK: 2071 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2072 if (hci_le_supported()){ 2073 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2074 } else { 2075 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2076 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2077 } 2078 break; 2079 2080 case HCI_INIT_SET_EVENT_MASK_2: 2081 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2082 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2083 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2084 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2085 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2086 // Encryption Change Event v2 - bit 25 2087 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2088 break; 2089 } 2090 2091 #ifdef ENABLE_CLASSIC 2092 /* fall through */ 2093 2094 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2095 if (hci_classic_supported() && gap_ssp_supported()){ 2096 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2097 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2098 break; 2099 } 2100 2101 /* fall through */ 2102 2103 case HCI_INIT_WRITE_INQUIRY_MODE: 2104 if (hci_classic_supported()){ 2105 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2106 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2107 break; 2108 } 2109 2110 /* fall through */ 2111 2112 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2113 // skip write secure connections host support if not supported or disabled 2114 if (hci_classic_supported() && hci_stack->secure_connections_enable 2115 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2116 hci_stack->secure_connections_active = true; 2117 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2118 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2119 break; 2120 } 2121 2122 /* fall through */ 2123 2124 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2125 // skip set min encryption key size 2126 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2127 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2128 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2129 break; 2130 } 2131 2132 #ifdef ENABLE_SCO_OVER_HCI 2133 /* fall through */ 2134 2135 // only sent if ENABLE_SCO_OVER_HCI is defined 2136 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2137 // skip write synchronous flow control if not supported 2138 if (hci_classic_supported() 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2140 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2141 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2142 break; 2143 } 2144 /* fall through */ 2145 2146 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2147 // skip write default erroneous data reporting if not supported 2148 if (hci_classic_supported() 2149 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2150 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2151 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2152 break; 2153 } 2154 #endif 2155 2156 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2157 /* fall through */ 2158 2159 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2160 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2161 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2162 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2163 #ifdef ENABLE_SCO_OVER_HCI 2164 log_info("BCM: Route SCO data via HCI transport"); 2165 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2166 #endif 2167 #ifdef ENABLE_SCO_OVER_PCM 2168 log_info("BCM: Route SCO data via PCM interface"); 2169 #ifdef ENABLE_BCM_PCM_WBS 2170 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2171 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2172 #else 2173 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2174 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2175 #endif 2176 #endif 2177 break; 2178 } 2179 #endif 2180 2181 #ifdef ENABLE_SCO_OVER_PCM 2182 /* fall through */ 2183 2184 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2185 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2186 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2187 log_info("BCM: Config PCM interface for I2S"); 2188 #ifdef ENABLE_BCM_PCM_WBS 2189 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2190 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2191 #else 2192 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2193 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2194 #endif 2195 break; 2196 } 2197 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2198 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2199 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2200 log_info("BCM: Config PCM Data format"); 2201 // msb first, fill bits 0, left justified 2202 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2203 break; 2204 } 2205 #ifdef HAVE_BCM_PCM2 2206 case HCI_INIT_BCM_PCM2_SETUP: 2207 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2208 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2209 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2210 uint32_t pcm_clock_freq; 2211 uint8_t ch_0_period; 2212 #ifdef ENABLE_BCM_PCM_WBS 2213 // 512 kHz, resample 8 kHz to 16 khz 2214 pcm_clock_freq = 512000; 2215 ch_0_period = 1; 2216 #else 2217 // 256 khz, 8 khz output 2218 pcm_clock_freq = 256000; 2219 ch_0_period = 0; 2220 #endif 2221 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2222 hci_send_cmd(&hci_bcm_pcm2_setup, 2223 0x00, // Action = Write 2224 0x00, // Test_Options = None 2225 op_mode, // Op_Mode 2226 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2227 pcm_clock_freq, // PCM_Clock_Freq 2228 0x01, // Sync_Signal_Width 2229 0x0F, // Slot_Width 2230 0x01, // NumberOfSlots 2231 0x00, // Bank_0_Fill_Mode = 0s 2232 0x00, // Bank_0_Number_of_Fill_Bits 2233 0x00, // Bank_0_Programmable_Fill_Data 2234 0x00, // Bank_1_Fill_Mode = 0s 2235 0x00, // Bank_1_Number_of_Fill_Bits 2236 0x00, // Bank_1_Programmable_Fill_Data 2237 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2238 0x00, // Ch_0_Slot_Number 2239 0x01, // Ch_1_Slot_Number 2240 0x02, // Ch_2_Slot_Number 2241 0x03, // Ch_3_Slot_Number 2242 0x04, // Ch_4_Slot_Number 2243 ch_0_period, // Ch_0_Period 2244 0x00, // Ch_1_Period 2245 0x00 // Ch_2_Period 2246 ); 2247 break; 2248 } 2249 #endif 2250 #endif /* ENABLE_SCO_OVER_PCM */ 2251 #endif /* ENABLE_CLASSIC */ 2252 2253 #ifdef ENABLE_BLE 2254 /* fall through */ 2255 2256 // LE INIT 2257 case HCI_INIT_LE_READ_BUFFER_SIZE: 2258 if (hci_le_supported()){ 2259 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2260 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2261 hci_send_cmd(&hci_le_read_buffer_size_v2); 2262 } else { 2263 hci_send_cmd(&hci_le_read_buffer_size); 2264 } 2265 break; 2266 } 2267 2268 /* fall through */ 2269 2270 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2271 // skip write le host if not supported (e.g. on LE only EM9301) 2272 if (hci_le_supported() 2273 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2274 // LE Supported Host = 1, Simultaneous Host = 0 2275 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2276 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2277 break; 2278 } 2279 2280 /* fall through */ 2281 2282 case HCI_INIT_LE_SET_EVENT_MASK: 2283 if (hci_le_supported()){ 2284 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2285 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2286 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2287 #else 2288 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2289 #endif 2290 break; 2291 } 2292 #endif 2293 2294 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2295 /* fall through */ 2296 2297 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2298 if (hci_le_supported() 2299 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2300 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2301 hci_send_cmd(&hci_le_read_maximum_data_length); 2302 break; 2303 } 2304 2305 /* fall through */ 2306 2307 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2308 if (hci_le_supported() 2309 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2310 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2311 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2312 break; 2313 } 2314 #endif 2315 2316 #ifdef ENABLE_LE_CENTRAL 2317 /* fall through */ 2318 2319 case HCI_INIT_READ_WHITE_LIST_SIZE: 2320 if (hci_le_supported()){ 2321 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2322 hci_send_cmd(&hci_le_read_white_list_size); 2323 break; 2324 } 2325 2326 #endif 2327 2328 #ifdef ENABLE_LE_PERIPHERAL 2329 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2330 /* fall through */ 2331 2332 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2333 if (hci_extended_advertising_supported()){ 2334 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2335 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2336 break; 2337 } 2338 #endif 2339 #endif 2340 /* fall through */ 2341 2342 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2343 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2344 if (hci_le_supported()) { 2345 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2346 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2347 break; 2348 } 2349 #endif 2350 2351 /* fall through */ 2352 2353 case HCI_INIT_DONE: 2354 hci_stack->substate = HCI_INIT_DONE; 2355 // main init sequence complete 2356 #ifdef ENABLE_CLASSIC 2357 // check if initial Classic GAP Tasks are completed 2358 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2359 hci_run_gap_tasks_classic(); 2360 break; 2361 } 2362 #endif 2363 #ifdef ENABLE_BLE 2364 #ifdef ENABLE_LE_CENTRAL 2365 // check if initial LE GAP Tasks are completed 2366 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2367 hci_run_general_gap_le(); 2368 break; 2369 } 2370 #endif 2371 #endif 2372 hci_init_done(); 2373 break; 2374 2375 default: 2376 return; 2377 } 2378 } 2379 2380 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2381 bool command_completed = false; 2382 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2383 uint16_t opcode = little_endian_read_16(packet,3); 2384 if (opcode == hci_stack->last_cmd_opcode){ 2385 command_completed = true; 2386 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2387 } else { 2388 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2389 } 2390 } 2391 2392 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2393 uint8_t status = packet[2]; 2394 uint16_t opcode = little_endian_read_16(packet,4); 2395 if (opcode == hci_stack->last_cmd_opcode){ 2396 if (status){ 2397 command_completed = true; 2398 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2399 } else { 2400 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2401 } 2402 } else { 2403 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2404 } 2405 } 2406 #ifndef HAVE_HOST_CONTROLLER_API 2407 // Vendor == CSR 2408 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2409 // TODO: track actual command 2410 command_completed = true; 2411 } 2412 2413 // Vendor == Toshiba 2414 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2415 // TODO: track actual command 2416 command_completed = true; 2417 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2418 hci_stack->num_cmd_packets = 1; 2419 } 2420 #endif 2421 2422 return command_completed; 2423 } 2424 2425 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2426 2427 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2428 2429 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2430 2431 #ifndef HAVE_HOST_CONTROLLER_API 2432 2433 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2434 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2435 // 2436 // HCI Reset 2437 // Timeout 100 ms 2438 // HCI Reset 2439 // Command Complete Reset 2440 // HCI Read Local Version Information 2441 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2442 // hang... 2443 // 2444 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2445 if (!command_completed 2446 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2447 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2448 2449 uint16_t opcode = little_endian_read_16(packet,3); 2450 if (opcode == hci_reset.opcode){ 2451 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2452 return; 2453 } 2454 } 2455 2456 // CSR & H5 2457 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2458 if (!command_completed 2459 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2460 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2461 2462 uint16_t opcode = little_endian_read_16(packet,3); 2463 if (opcode == hci_reset.opcode){ 2464 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2465 return; 2466 } 2467 } 2468 2469 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2470 // fix: Correct substate and behave as command below 2471 if (command_completed){ 2472 switch (hci_stack->substate){ 2473 case HCI_INIT_SEND_RESET: 2474 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2475 break; 2476 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2477 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2478 break; 2479 default: 2480 break; 2481 } 2482 } 2483 2484 #endif 2485 2486 if (!command_completed) return; 2487 2488 bool need_baud_change = false; 2489 bool need_addr_change = false; 2490 2491 #ifndef HAVE_HOST_CONTROLLER_API 2492 need_baud_change = hci_stack->config 2493 && hci_stack->chipset 2494 && hci_stack->chipset->set_baudrate_command 2495 && hci_stack->hci_transport->set_baudrate 2496 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2497 2498 need_addr_change = hci_stack->custom_bd_addr_set 2499 && hci_stack->chipset 2500 && hci_stack->chipset->set_bd_addr_command; 2501 #endif 2502 2503 switch(hci_stack->substate){ 2504 2505 #ifndef HAVE_HOST_CONTROLLER_API 2506 case HCI_INIT_SEND_RESET: 2507 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2508 // fix: just correct substate and behave as command below 2509 2510 /* fall through */ 2511 #endif 2512 2513 case HCI_INIT_W4_SEND_RESET: 2514 btstack_run_loop_remove_timer(&hci_stack->timeout); 2515 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2516 return; 2517 2518 #ifndef HAVE_HOST_CONTROLLER_API 2519 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2520 // for STLC2500D, baud rate change already happened. 2521 // for others, baud rate gets changed now 2522 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2523 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2524 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2525 hci_stack->hci_transport->set_baudrate(baud_rate); 2526 } 2527 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2528 return; 2529 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2530 btstack_run_loop_remove_timer(&hci_stack->timeout); 2531 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2532 return; 2533 case HCI_INIT_W4_CUSTOM_INIT: 2534 // repeat custom init 2535 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2536 return; 2537 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2538 // repeat custom init 2539 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2540 return; 2541 #endif 2542 2543 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2544 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2545 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2546 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2547 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2548 return; 2549 } 2550 if (need_addr_change){ 2551 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2552 return; 2553 } 2554 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2555 return; 2556 #ifndef HAVE_HOST_CONTROLLER_API 2557 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2558 if (need_baud_change){ 2559 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2560 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2561 hci_stack->hci_transport->set_baudrate(baud_rate); 2562 } 2563 if (need_addr_change){ 2564 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2565 return; 2566 } 2567 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2568 return; 2569 case HCI_INIT_W4_SET_BD_ADDR: 2570 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2571 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2572 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2573 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2574 return; 2575 } 2576 // skipping st warm boot 2577 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2578 return; 2579 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2580 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2581 return; 2582 #endif 2583 2584 case HCI_INIT_DONE: 2585 // set state if we came here by fall through 2586 hci_stack->substate = HCI_INIT_DONE; 2587 return; 2588 2589 default: 2590 break; 2591 } 2592 hci_initializing_next_state(); 2593 } 2594 2595 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2596 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2597 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2598 // check if we have been aware of the HCI connection 2599 switch (conn->state){ 2600 case SENT_CREATE_CONNECTION: 2601 case RECEIVED_CONNECTION_REQUEST: 2602 case ACCEPTED_CONNECTION_REQUEST: 2603 break; 2604 default: 2605 return; 2606 } 2607 2608 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2609 bd_addr_t bd_address; 2610 (void)memcpy(&bd_address, conn->address, 6); 2611 2612 #ifdef ENABLE_CLASSIC 2613 // cache needed data 2614 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2615 #endif 2616 2617 // connection failed, remove entry 2618 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2619 btstack_memory_hci_connection_free( conn ); 2620 2621 #ifdef ENABLE_CLASSIC 2622 // notify client if dedicated bonding 2623 if (notify_dedicated_bonding_failed){ 2624 log_info("hci notify_dedicated_bonding_failed"); 2625 hci_emit_dedicated_bonding_result(bd_address, status); 2626 } 2627 2628 // if authentication error, also delete link key 2629 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2630 gap_drop_link_key_for_bd_addr(bd_address); 2631 } 2632 #else 2633 UNUSED(status); 2634 #endif 2635 } 2636 2637 #ifdef ENABLE_CLASSIC 2638 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2639 // SSP Controller 2640 if (features[6] & (1 << 3)){ 2641 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2642 } 2643 // eSCO 2644 if (features[3] & (1<<7)){ 2645 conn->remote_supported_features[0] |= 1; 2646 } 2647 // Extended features 2648 if (features[7] & (1<<7)){ 2649 conn->remote_supported_features[0] |= 2; 2650 } 2651 // SCO packet types 2652 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2653 } 2654 2655 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2656 // SSP Host 2657 if (features[0] & (1 << 0)){ 2658 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2659 } 2660 // SC Host 2661 if (features[0] & (1 << 3)){ 2662 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2663 } 2664 } 2665 2666 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2667 // SC Controller 2668 if (features[1] & (1 << 0)){ 2669 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2670 } 2671 } 2672 2673 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2674 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2675 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2676 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2677 if (conn->bonding_flags & BONDING_DEDICATED){ 2678 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2679 } 2680 } 2681 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2682 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2683 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2684 } 2685 2686 #endif 2687 2688 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2689 // handle BT initialization 2690 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2691 hci_initializing_event_handler(packet, size); 2692 } 2693 2694 // help with BT sleep 2695 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2696 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2697 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2698 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2699 hci_initializing_next_state(); 2700 } 2701 } 2702 2703 #ifdef ENABLE_CLASSIC 2704 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2705 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2706 conn->requested_security_level = LEVEL_0; 2707 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2708 hci_emit_security_level(conn->con_handle, security_level); 2709 2710 // dedicated bonding 2711 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2712 conn->bonding_flags &= ~BONDING_DEDICATED; 2713 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2714 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2715 // emit dedicated bonding complete, don't disconnect 2716 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2717 #else 2718 // request disconnect, event is emitted after disconnect 2719 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2720 #endif 2721 } 2722 } 2723 2724 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2725 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2726 conn->encryption_key_size = encryption_key_size; 2727 2728 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2729 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2730 hci_handle_mutual_authentication_completed(conn); 2731 } else { 2732 // otherwise trigger remote feature request and send authentication request 2733 hci_trigger_remote_features_for_connection(conn); 2734 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2735 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2736 } 2737 } 2738 } 2739 #endif 2740 2741 static void hci_store_local_supported_commands(const uint8_t * packet){ 2742 // create mapping table 2743 #define X(name, offset, bit) { offset, bit }, 2744 static struct { 2745 uint8_t byte_offset; 2746 uint8_t bit_position; 2747 } supported_hci_commands_map [] = { 2748 SUPPORTED_HCI_COMMANDS 2749 }; 2750 #undef X 2751 2752 // create names for debug purposes 2753 #ifdef ENABLE_LOG_DEBUG 2754 #define X(name, offset, bit) #name, 2755 static const char * command_names[] = { 2756 SUPPORTED_HCI_COMMANDS 2757 }; 2758 #undef X 2759 #endif 2760 2761 hci_stack->local_supported_commands = 0; 2762 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2763 uint16_t i; 2764 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2765 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2766 #ifdef ENABLE_LOG_DEBUG 2767 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); 2768 #else 2769 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2770 #endif 2771 hci_stack->local_supported_commands |= (1LU << i); 2772 } 2773 } 2774 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2775 } 2776 2777 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2778 UNUSED(size); 2779 2780 uint8_t status = 0; 2781 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2782 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2783 } 2784 uint16_t manufacturer; 2785 #ifdef ENABLE_CLASSIC 2786 hci_connection_t * conn; 2787 #endif 2788 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2789 hci_con_handle_t handle; 2790 #endif 2791 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2792 le_audio_cig_t * cig; 2793 #endif 2794 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2795 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2796 #endif 2797 2798 // get num cmd packets - limit to 1 to reduce complexity 2799 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2800 2801 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2802 switch (opcode){ 2803 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2804 if (status) break; 2805 // terminate, name 248 chars 2806 packet[6+248] = 0; 2807 log_info("local name: %s", &packet[6]); 2808 break; 2809 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2810 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2811 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2812 uint16_t acl_len = little_endian_read_16(packet, 6); 2813 uint16_t sco_len = packet[8]; 2814 2815 // determine usable ACL/SCO payload size 2816 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2817 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2818 2819 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2820 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2821 2822 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2823 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2824 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2825 } 2826 break; 2827 case HCI_OPCODE_HCI_READ_RSSI: 2828 if (status == ERROR_CODE_SUCCESS){ 2829 uint8_t event[5]; 2830 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2831 event[1] = 3; 2832 (void)memcpy(&event[2], &packet[6], 3); 2833 hci_emit_event(event, sizeof(event), 1); 2834 } 2835 break; 2836 #ifdef ENABLE_BLE 2837 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2838 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2839 hci_stack->le_iso_packets_total_num = packet[11]; 2840 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2841 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2842 2843 /* fall through */ 2844 2845 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2846 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2847 hci_stack->le_acl_packets_total_num = packet[8]; 2848 // determine usable ACL payload size 2849 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2850 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2851 } 2852 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); 2853 break; 2854 #endif 2855 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2856 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2857 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2858 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2859 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); 2860 break; 2861 #endif 2862 #ifdef ENABLE_LE_CENTRAL 2863 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2864 hci_stack->le_whitelist_capacity = packet[6]; 2865 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2866 break; 2867 #endif 2868 #ifdef ENABLE_LE_PERIPHERAL 2869 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2870 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2871 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2872 break; 2873 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2874 if (hci_stack->le_advertising_set_in_current_command != 0) { 2875 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2876 hci_stack->le_advertising_set_in_current_command = 0; 2877 if (advertising_set == NULL) break; 2878 uint8_t adv_status = packet[6]; 2879 uint8_t tx_power = packet[7]; 2880 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 }; 2881 if (adv_status == 0){ 2882 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2883 } 2884 hci_emit_event(event, sizeof(event), 1); 2885 } 2886 break; 2887 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2888 if (hci_stack->le_advertising_set_in_current_command != 0) { 2889 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2890 hci_stack->le_advertising_set_in_current_command = 0; 2891 if (advertising_set == NULL) break; 2892 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2893 if (status == 0){ 2894 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2895 } 2896 hci_emit_event(event, sizeof(event), 1); 2897 } 2898 break; 2899 #endif 2900 #endif 2901 case HCI_OPCODE_HCI_READ_BD_ADDR: 2902 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2903 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2904 #ifdef ENABLE_CLASSIC 2905 if (hci_stack->link_key_db){ 2906 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2907 } 2908 #endif 2909 break; 2910 #ifdef ENABLE_CLASSIC 2911 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2912 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2913 break; 2914 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2915 if (status == ERROR_CODE_SUCCESS) { 2916 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2917 } else { 2918 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2919 } 2920 break; 2921 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2922 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2923 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2924 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2925 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2926 hci_emit_event(event, sizeof(event), 1); 2927 } 2928 break; 2929 #endif 2930 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2931 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2932 2933 #ifdef ENABLE_CLASSIC 2934 // determine usable ACL packet types based on host buffer size and supported features 2935 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]); 2936 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2937 // determine usable SCO packet types based on supported features 2938 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2939 &hci_stack->local_supported_features[0]); 2940 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2941 #endif 2942 // Classic/LE 2943 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2944 break; 2945 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2946 manufacturer = little_endian_read_16(packet, 10); 2947 // map Cypress & Infineon to Broadcom 2948 switch (manufacturer){ 2949 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2950 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2951 log_info("Treat Cypress/Infineon as Broadcom"); 2952 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2953 little_endian_store_16(packet, 10, manufacturer); 2954 break; 2955 default: 2956 break; 2957 } 2958 hci_stack->manufacturer = manufacturer; 2959 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2960 break; 2961 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2962 hci_store_local_supported_commands(packet); 2963 break; 2964 #ifdef ENABLE_CLASSIC 2965 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2966 if (status) return; 2967 hci_stack->synchronous_flow_control_enabled = 1; 2968 break; 2969 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2970 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2971 conn = hci_connection_for_handle(handle); 2972 if (conn != NULL) { 2973 uint8_t key_size = 0; 2974 if (status == 0){ 2975 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2976 log_info("Handle %04x key Size: %u", handle, key_size); 2977 } else { 2978 key_size = 1; 2979 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2980 } 2981 hci_handle_read_encryption_key_size_complete(conn, key_size); 2982 } 2983 break; 2984 // assert pairing complete event is emitted. 2985 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2986 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2987 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2988 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2989 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2990 // lookup connection by gap pairing addr 2991 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2992 if (conn == NULL) break; 2993 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2994 break; 2995 2996 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2997 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2998 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2999 uint8_t event[67]; 3000 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3001 event[1] = 65; 3002 (void)memset(&event[2], 0, 65); 3003 if (status == ERROR_CODE_SUCCESS){ 3004 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3005 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3006 event[2] = 3; 3007 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3008 } else { 3009 event[2] = 1; 3010 } 3011 } 3012 hci_emit_event(event, sizeof(event), 0); 3013 break; 3014 } 3015 3016 // note: only needed if user does not provide OOB data 3017 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3018 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3019 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3020 if (conn == NULL) break; 3021 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3022 break; 3023 #endif 3024 #endif 3025 #ifdef ENABLE_BLE 3026 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3027 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3028 // lookup CIG 3029 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3030 if (cig != NULL){ 3031 uint8_t i = 0; 3032 if (status == ERROR_CODE_SUCCESS){ 3033 // assign CIS handles to pre-allocated CIS 3034 btstack_linked_list_iterator_t it; 3035 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3036 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3037 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3038 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3039 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3040 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3041 iso_stream->cis_handle = cis_handle; 3042 cig->cis_con_handles[i] = cis_handle; 3043 i++; 3044 } 3045 } 3046 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3047 hci_emit_cig_created(cig, status); 3048 } else { 3049 hci_emit_cig_created(cig, status); 3050 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3051 } 3052 } 3053 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3054 break; 3055 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3056 if (status != ERROR_CODE_SUCCESS){ 3057 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3058 } 3059 break; 3060 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3061 if (status != ERROR_CODE_SUCCESS){ 3062 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3063 } 3064 break; 3065 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3066 // lookup BIG by state 3067 btstack_linked_list_iterator_t it; 3068 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3069 while (btstack_linked_list_iterator_has_next(&it)) { 3070 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3071 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3072 if (status == ERROR_CODE_SUCCESS){ 3073 big->state_vars.next_bis++; 3074 if (big->state_vars.next_bis == big->num_bis){ 3075 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3076 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3077 } else { 3078 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3079 } 3080 } else { 3081 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3082 big->state_vars.status = status; 3083 } 3084 return; 3085 } 3086 } 3087 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3088 while (btstack_linked_list_iterator_has_next(&it)) { 3089 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3090 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3091 if (status == ERROR_CODE_SUCCESS){ 3092 big_sync->state_vars.next_bis++; 3093 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3094 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3095 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3096 } else { 3097 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3098 } 3099 } else { 3100 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3101 big_sync->state_vars.status = status; 3102 } 3103 return; 3104 } 3105 } 3106 // Lookup CIS via active group operation 3107 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3108 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3109 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3110 3111 // lookup CIS by state 3112 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3113 while (btstack_linked_list_iterator_has_next(&it)){ 3114 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3115 handle = iso_stream->cis_handle; 3116 bool emit_cis_created = false; 3117 switch (iso_stream->state){ 3118 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3119 if (status != ERROR_CODE_SUCCESS){ 3120 emit_cis_created = true; 3121 break; 3122 } 3123 if (iso_stream->max_sdu_c_to_p > 0){ 3124 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3125 } else { 3126 emit_cis_created = true; 3127 } 3128 break; 3129 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3130 emit_cis_created = true; 3131 break; 3132 default: 3133 break; 3134 } 3135 if (emit_cis_created){ 3136 hci_cis_handle_created(iso_stream, status); 3137 } 3138 } 3139 } else { 3140 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3141 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3142 if (cig != NULL) { 3143 // emit cis created if all ISO Paths have been created 3144 // assume we are central 3145 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3146 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3147 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3148 // if outgoing has been setup, or incoming was setup but outgoing not required 3149 if ((cis_direction == 1) || (outgoing_needed == false)){ 3150 // lookup iso stream by cig/cis 3151 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3152 while (btstack_linked_list_iterator_has_next(&it)) { 3153 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3154 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3155 hci_cis_handle_created(iso_stream, status); 3156 } 3157 } 3158 } 3159 // next state 3160 cig->state_vars.next_cis++; 3161 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3162 } 3163 } 3164 } 3165 break; 3166 } 3167 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3168 // lookup BIG by state 3169 btstack_linked_list_iterator_t it; 3170 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3171 while (btstack_linked_list_iterator_has_next(&it)) { 3172 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3173 uint8_t big_handle = big_sync->big_handle; 3174 switch (big_sync->state){ 3175 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3176 btstack_linked_list_iterator_remove(&it); 3177 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3178 return; 3179 default: 3180 btstack_linked_list_iterator_remove(&it); 3181 hci_emit_big_sync_stopped(big_handle); 3182 return; 3183 } 3184 } 3185 break; 3186 } 3187 #endif 3188 #endif 3189 default: 3190 break; 3191 } 3192 } 3193 3194 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3195 UNUSED(size); 3196 3197 // get num cmd packets - limit to 1 to reduce complexity 3198 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3199 3200 // get opcode and command status 3201 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3202 3203 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3204 uint8_t status = hci_event_command_status_get_status(packet); 3205 #endif 3206 3207 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3208 bd_addr_type_t addr_type; 3209 bd_addr_t addr; 3210 #endif 3211 3212 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3213 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3214 #endif 3215 3216 switch (opcode){ 3217 #ifdef ENABLE_CLASSIC 3218 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3219 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3220 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3221 #endif 3222 #ifdef ENABLE_LE_CENTRAL 3223 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3224 #endif 3225 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3226 addr_type = hci_stack->outgoing_addr_type; 3227 memcpy(addr, hci_stack->outgoing_addr, 6); 3228 3229 // reset outgoing address info 3230 memset(hci_stack->outgoing_addr, 0, 6); 3231 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3232 3233 // on error 3234 if (status != ERROR_CODE_SUCCESS){ 3235 #ifdef ENABLE_LE_CENTRAL 3236 if (hci_is_le_connection_type(addr_type)){ 3237 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3238 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3239 } 3240 #endif 3241 // error => outgoing connection failed 3242 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3243 if (conn != NULL){ 3244 hci_handle_connection_failed(conn, status); 3245 } 3246 } 3247 break; 3248 #endif 3249 #ifdef ENABLE_CLASSIC 3250 case HCI_OPCODE_HCI_INQUIRY: 3251 if (status == ERROR_CODE_SUCCESS) { 3252 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3253 } else { 3254 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3255 } 3256 break; 3257 #endif 3258 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3259 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3260 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3261 if (status == ERROR_CODE_SUCCESS){ 3262 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3263 } else { 3264 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3265 } 3266 break; 3267 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3268 default: 3269 break; 3270 } 3271 } 3272 3273 #ifdef ENABLE_BLE 3274 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3275 gap_event[0] = HCI_EVENT_META_GAP; 3276 gap_event[1] = 36 - 2; 3277 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3278 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3279 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3280 memcpy(&gap_event[3], &hci_event[3], 11); 3281 memset(&gap_event[14], 0, 12); 3282 memcpy(&gap_event[26], &hci_event[14], 7); 3283 memset(&gap_event[33], 0xff, 3); 3284 break; 3285 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3286 memcpy(&gap_event[3], &hci_event[3], 30); 3287 memset(&gap_event[33], 0xff, 3); 3288 break; 3289 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3290 memcpy(&gap_event[3], &hci_event[3], 33); 3291 break; 3292 default: 3293 btstack_unreachable(); 3294 break; 3295 } 3296 } 3297 3298 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3299 bd_addr_t addr; 3300 bd_addr_type_t addr_type; 3301 hci_connection_t * conn; 3302 3303 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3304 uint8_t gap_event[36]; 3305 hci_create_gap_connection_complete_event(hci_event, gap_event); 3306 3307 // read fields 3308 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3309 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3310 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3311 3312 // Connection management 3313 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3314 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3315 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3316 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3317 3318 #ifdef ENABLE_LE_CENTRAL 3319 // handle error: error is reported only to the initiator -> outgoing connection 3320 if (status){ 3321 3322 // handle cancelled outgoing connection 3323 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3324 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3325 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3326 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3327 // reset state 3328 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3329 // get outgoing connection conn struct for direct connect 3330 conn = gap_get_outgoing_le_connection(); 3331 } 3332 3333 // free connection if cancelled by user (request == IDLE) 3334 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 3335 // remove entry 3336 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3337 btstack_memory_hci_connection_free( conn ); 3338 } 3339 return; 3340 } 3341 #endif 3342 3343 // on success, both hosts receive connection complete event 3344 if (role == HCI_ROLE_MASTER){ 3345 #ifdef ENABLE_LE_CENTRAL 3346 // if we're master, it was an outgoing connection 3347 // note: no hci_connection_t object exists yet for connect with whitelist 3348 3349 // if resolvable private addresses are used without enhanced connection complete event, 3350 // we will get a random addr in the connection complete event for an outgoing connection. 3351 // To avoid duplicate connection structs, fetch outgoing connection 3352 if (hci_subevent_ge) 3353 conn = gap_get_outgoing_le_connection(); 3354 // if successful, use (potentially) identity address, but also track identity 3355 // note: we don't update hci le subevent connection complete 3356 if (conn != NULL){ 3357 gap_event[7] = conn->address_type; 3358 reverse_bd_addr(conn->address, &gap_event[8]); 3359 } 3360 3361 // we're done with it 3362 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3363 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3364 #endif 3365 } else { 3366 #ifdef ENABLE_LE_PERIPHERAL 3367 // if we're slave, it was an incoming connection, advertisements have stopped 3368 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3369 #endif 3370 } 3371 3372 // LE connections are auto-accepted, so just create a connection if there isn't one already 3373 if (!conn){ 3374 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3375 } 3376 3377 // no memory, sorry. 3378 if (!conn){ 3379 return; 3380 } 3381 3382 conn->state = OPEN; 3383 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3384 conn->le_connection_interval = conn_interval; 3385 3386 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3387 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3388 3389 #ifdef ENABLE_LE_PERIPHERAL 3390 if (role == HCI_ROLE_SLAVE){ 3391 hci_update_advertisements_enabled_for_current_roles(); 3392 } 3393 #endif 3394 3395 // init unenhanced att bearer mtu 3396 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3397 conn->att_connection.mtu_exchanged = false; 3398 3399 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3400 3401 // restart timer 3402 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3403 // btstack_run_loop_add_timer(&conn->timeout); 3404 3405 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3406 3407 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3408 hci_emit_event(gap_event, sizeof(gap_event), 1); 3409 3410 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3411 hci_emit_nr_connections_changed(); 3412 } 3413 #endif 3414 3415 #ifdef ENABLE_CLASSIC 3416 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){ 3417 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3418 // LEVEL_4 is tested by l2cap 3419 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3420 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3421 if (level >= LEVEL_3){ 3422 // MITM not possible without keyboard or display 3423 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3424 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3425 3426 // MITM possible if one side has keyboard and the other has keyboard or display 3427 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3428 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3429 3430 // MITM not possible if one side has only display and other side has no keyboard 3431 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3432 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3433 } 3434 // LEVEL 2 requires SSP, which is a given 3435 return true; 3436 } 3437 3438 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3439 // get requested security level 3440 gap_security_level_t requested_security_level = conn->requested_security_level; 3441 if (hci_stack->gap_secure_connections_only_mode){ 3442 requested_security_level = LEVEL_4; 3443 } 3444 3445 // assess security: LEVEL 4 requires SC 3446 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3447 if ((requested_security_level == LEVEL_4) && 3448 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3449 !hci_remote_sc_enabled(conn)){ 3450 log_info("Level 4 required, but SC not supported -> abort"); 3451 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3452 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3453 return; 3454 } 3455 3456 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3457 // - GAP/MOD/NBON/BV-02-C 3458 // - GAP/DM/NBON/BV-01-C 3459 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3460 switch (conn->io_cap_response_auth_req){ 3461 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3462 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3463 if (hci_stack->bondable == false){ 3464 log_info("Dedicated vs. non-bondable -> abort"); 3465 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3466 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3467 return; 3468 } 3469 default: 3470 break; 3471 } 3472 } 3473 3474 // assess security based on io capabilities 3475 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3476 // responder: fully validate io caps of both sides as well as OOB data 3477 bool security_possible = false; 3478 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3479 3480 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3481 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3482 // so we merge the OOB data availability 3483 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3484 if (conn->classic_oob_c_192 != NULL){ 3485 have_oob_data |= 1; 3486 } 3487 if (conn->classic_oob_c_256 != NULL){ 3488 have_oob_data |= 2; 3489 } 3490 // for up to Level 3, either P-192 as well as P-256 will do 3491 // 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 3492 // if remote does not SC, we should not receive P-256 data either 3493 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3494 security_possible = true; 3495 } 3496 // for Level 4, P-256 is needed 3497 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3498 security_possible = true; 3499 } 3500 #endif 3501 3502 if (security_possible == false){ 3503 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3504 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3505 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3506 return; 3507 } 3508 } else { 3509 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3510 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3511 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3512 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3513 log_info("Level 3+ required, but no input/output -> abort"); 3514 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3515 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3516 return; 3517 } 3518 #endif 3519 #endif 3520 } 3521 3522 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3523 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3524 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3525 } else { 3526 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3527 } 3528 #endif 3529 } 3530 3531 #endif 3532 3533 static void event_handler(uint8_t *packet, uint16_t size){ 3534 3535 uint16_t event_length = packet[1]; 3536 3537 // assert packet is complete 3538 if (size != (event_length + 2u)){ 3539 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3540 return; 3541 } 3542 3543 hci_con_handle_t handle; 3544 hci_connection_t * conn; 3545 int i; 3546 3547 #ifdef ENABLE_CLASSIC 3548 hci_link_type_t link_type; 3549 bd_addr_t addr; 3550 bd_addr_type_t addr_type; 3551 #endif 3552 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3553 hci_iso_stream_t * iso_stream; 3554 le_audio_big_t * big; 3555 le_audio_big_sync_t * big_sync; 3556 #endif 3557 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3558 btstack_linked_list_iterator_t it; 3559 #endif 3560 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3561 uint8_t advertising_handle; 3562 #endif 3563 3564 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3565 3566 switch (hci_event_packet_get_type(packet)) { 3567 3568 case HCI_EVENT_COMMAND_COMPLETE: 3569 handle_command_complete_event(packet, size); 3570 break; 3571 3572 case HCI_EVENT_COMMAND_STATUS: 3573 handle_command_status_event(packet, size); 3574 break; 3575 3576 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3577 if (size < 3) return; 3578 uint16_t num_handles = packet[2]; 3579 if (size != (3u + num_handles * 4u)) return; 3580 #ifdef ENABLE_CLASSIC 3581 bool notify_sco = false; 3582 #endif 3583 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3584 bool notify_iso = false; 3585 #endif 3586 uint16_t offset = 3; 3587 for (i=0; i<num_handles;i++){ 3588 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3589 offset += 2u; 3590 uint16_t num_packets = little_endian_read_16(packet, offset); 3591 offset += 2u; 3592 3593 conn = hci_connection_for_handle(handle); 3594 if (conn != NULL) { 3595 3596 if (conn->num_packets_sent >= num_packets) { 3597 conn->num_packets_sent -= num_packets; 3598 } else { 3599 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3600 conn->num_packets_sent = 0; 3601 } 3602 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3603 #ifdef ENABLE_CLASSIC 3604 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3605 notify_sco = true; 3606 } 3607 #endif 3608 } 3609 3610 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3611 hci_controller_dump_packets(); 3612 #endif 3613 3614 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3615 if (conn == NULL){ 3616 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3617 if (iso_stream != NULL){ 3618 if (iso_stream->num_packets_sent >= num_packets) { 3619 iso_stream->num_packets_sent -= num_packets; 3620 } else { 3621 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3622 iso_stream->num_packets_sent = 0; 3623 } 3624 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3625 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3626 if (big != NULL){ 3627 big->num_completed_timestamp_current_valid = true; 3628 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3629 } 3630 } 3631 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3632 num_packets, handle, iso_stream->num_packets_sent); 3633 notify_iso = true; 3634 } 3635 } 3636 #endif 3637 } 3638 3639 #ifdef ENABLE_CLASSIC 3640 if (notify_sco){ 3641 hci_notify_if_sco_can_send_now(); 3642 } 3643 #endif 3644 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3645 if (notify_iso){ 3646 hci_iso_notify_can_send_now(); 3647 } 3648 #endif 3649 break; 3650 } 3651 3652 #ifdef ENABLE_CLASSIC 3653 case HCI_EVENT_FLUSH_OCCURRED: 3654 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3655 handle = hci_event_flush_occurred_get_handle(packet); 3656 conn = hci_connection_for_handle(handle); 3657 if (conn) { 3658 log_info("Flush occurred, disconnect 0x%04x", handle); 3659 conn->state = SEND_DISCONNECT; 3660 } 3661 break; 3662 3663 case HCI_EVENT_INQUIRY_COMPLETE: 3664 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3665 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3666 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3667 hci_emit_event(event, sizeof(event), 1); 3668 } 3669 break; 3670 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3671 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3672 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3673 } 3674 break; 3675 case HCI_EVENT_CONNECTION_REQUEST: 3676 reverse_bd_addr(&packet[2], addr); 3677 link_type = (hci_link_type_t) packet[11]; 3678 3679 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3680 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3681 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3682 bd_addr_copy(hci_stack->decline_addr, addr); 3683 break; 3684 } 3685 3686 if (hci_stack->gap_classic_accept_callback != NULL){ 3687 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3688 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3689 bd_addr_copy(hci_stack->decline_addr, addr); 3690 break; 3691 } 3692 } 3693 3694 // TODO: eval COD 8-10 3695 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3696 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3697 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3698 if (!conn) { 3699 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3700 } 3701 if (!conn) { 3702 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3703 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3704 bd_addr_copy(hci_stack->decline_addr, addr); 3705 hci_run(); 3706 // avoid event to higher layer 3707 return; 3708 } 3709 conn->state = RECEIVED_CONNECTION_REQUEST; 3710 // store info about eSCO 3711 if (link_type == HCI_LINK_TYPE_ESCO){ 3712 conn->remote_supported_features[0] |= 1; 3713 } 3714 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3715 if (addr_type == BD_ADDR_TYPE_SCO){ 3716 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3717 // ACL exists unless fuzzing 3718 if (acl_conn != NULL) { 3719 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3720 } 3721 } 3722 hci_run(); 3723 break; 3724 3725 case HCI_EVENT_CONNECTION_COMPLETE: 3726 // Connection management 3727 reverse_bd_addr(&packet[5], addr); 3728 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3729 addr_type = BD_ADDR_TYPE_ACL; 3730 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3731 if (conn) { 3732 switch (conn->state){ 3733 // expected states 3734 case ACCEPTED_CONNECTION_REQUEST: 3735 case SENT_CREATE_CONNECTION: 3736 break; 3737 // unexpected state -> ignore 3738 default: 3739 // don't forward event to app 3740 return; 3741 } 3742 if (!packet[2]){ 3743 conn->state = OPEN; 3744 conn->con_handle = little_endian_read_16(packet, 3); 3745 3746 // trigger write supervision timeout if we're master 3747 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3748 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3749 } 3750 3751 // trigger write automatic flush timeout 3752 if (hci_stack->automatic_flush_timeout != 0){ 3753 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3754 } 3755 3756 // restart timer 3757 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3758 btstack_run_loop_add_timer(&conn->timeout); 3759 3760 // trigger remote features for dedicated bonding 3761 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3762 hci_trigger_remote_features_for_connection(conn); 3763 } 3764 3765 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3766 3767 hci_emit_nr_connections_changed(); 3768 } else { 3769 // connection failed 3770 hci_handle_connection_failed(conn, packet[2]); 3771 } 3772 } 3773 break; 3774 3775 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3776 reverse_bd_addr(&packet[5], addr); 3777 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3778 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3779 3780 // SCO exists unless fuzzer 3781 if (conn == NULL) break; 3782 3783 if (packet[2] != ERROR_CODE_SUCCESS){ 3784 // connection failed, remove entry 3785 hci_handle_connection_failed(conn, packet[2]); 3786 break; 3787 } 3788 3789 conn->state = OPEN; 3790 conn->con_handle = little_endian_read_16(packet, 3); 3791 3792 // update sco payload length for eSCO connections 3793 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3794 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3795 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3796 } 3797 3798 #ifdef ENABLE_SCO_OVER_HCI 3799 // update SCO 3800 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3801 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3802 } 3803 // trigger can send now 3804 if (hci_have_usb_transport()){ 3805 hci_stack->sco_can_send_now = true; 3806 } 3807 3808 // setup implict sco flow control 3809 conn->sco_tx_ready = 0; 3810 conn->sco_tx_active = 0; 3811 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3812 3813 #endif 3814 #ifdef HAVE_SCO_TRANSPORT 3815 // configure sco transport 3816 if (hci_stack->sco_transport != NULL){ 3817 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3818 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3819 } 3820 #endif 3821 break; 3822 3823 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3824 handle = little_endian_read_16(packet, 3); 3825 conn = hci_connection_for_handle(handle); 3826 if (!conn) break; 3827 if (!packet[2]){ 3828 const uint8_t * features = &packet[5]; 3829 hci_handle_remote_features_page_0(conn, features); 3830 3831 // read extended features if possible 3832 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3833 && ((conn->remote_supported_features[0] & 2) != 0)) { 3834 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3835 break; 3836 } 3837 } 3838 hci_handle_remote_features_received(conn); 3839 break; 3840 3841 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3842 handle = little_endian_read_16(packet, 3); 3843 conn = hci_connection_for_handle(handle); 3844 if (!conn) break; 3845 // status = ok, page = 1 3846 if (!packet[2]) { 3847 uint8_t page_number = packet[5]; 3848 uint8_t maximum_page_number = packet[6]; 3849 const uint8_t * features = &packet[7]; 3850 bool done = false; 3851 switch (page_number){ 3852 case 1: 3853 hci_handle_remote_features_page_1(conn, features); 3854 if (maximum_page_number >= 2){ 3855 // get Secure Connections (Controller) from Page 2 if available 3856 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3857 } else { 3858 // otherwise, assume SC (Controller) == SC (Host) 3859 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3860 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3861 } 3862 done = true; 3863 } 3864 break; 3865 case 2: 3866 hci_handle_remote_features_page_2(conn, features); 3867 done = true; 3868 break; 3869 default: 3870 break; 3871 } 3872 if (!done) break; 3873 } 3874 hci_handle_remote_features_received(conn); 3875 break; 3876 3877 case HCI_EVENT_LINK_KEY_REQUEST: 3878 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3879 hci_event_link_key_request_get_bd_addr(packet, addr); 3880 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3881 if (!conn) break; 3882 3883 // lookup link key in db if not cached 3884 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3885 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3886 } 3887 3888 // response sent by hci_run() 3889 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3890 #endif 3891 break; 3892 3893 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3894 hci_event_link_key_request_get_bd_addr(packet, addr); 3895 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3896 if (!conn) break; 3897 3898 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3899 3900 // CVE-2020-26555: ignore NULL link key 3901 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3902 if (btstack_is_null(&packet[8], 16)) break; 3903 3904 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3905 // Change Connection Encryption keeps link key type 3906 if (link_key_type != CHANGED_COMBINATION_KEY){ 3907 conn->link_key_type = link_key_type; 3908 } 3909 3910 // cache link key. link keys stored in little-endian format for legacy reasons 3911 memcpy(&conn->link_key, &packet[8], 16); 3912 3913 // only store link key: 3914 // - if bondable enabled 3915 if (hci_stack->bondable == false) break; 3916 // - if security level sufficient 3917 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3918 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3919 break; 3920 } 3921 3922 case HCI_EVENT_PIN_CODE_REQUEST: 3923 hci_event_pin_code_request_get_bd_addr(packet, addr); 3924 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3925 if (!conn) break; 3926 3927 hci_pairing_started(conn, false); 3928 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3929 if (!hci_stack->bondable ){ 3930 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3931 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3932 hci_run(); 3933 return; 3934 } 3935 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3936 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3937 log_info("Level 4 required, but SC not supported -> abort"); 3938 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3939 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3940 hci_run(); 3941 return; 3942 } 3943 break; 3944 3945 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3946 hci_event_io_capability_response_get_bd_addr(packet, addr); 3947 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3948 if (!conn) break; 3949 3950 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3951 hci_pairing_started(conn, true); 3952 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3953 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3954 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3955 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3956 #endif 3957 break; 3958 3959 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3960 hci_event_io_capability_response_get_bd_addr(packet, addr); 3961 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3962 if (!conn) break; 3963 3964 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3965 hci_connection_timestamp(conn); 3966 hci_pairing_started(conn, true); 3967 break; 3968 3969 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3970 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3971 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3972 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3973 if (!conn) break; 3974 3975 hci_connection_timestamp(conn); 3976 3977 hci_pairing_started(conn, true); 3978 3979 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3980 break; 3981 #endif 3982 3983 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3984 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3985 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3986 if (!conn) break; 3987 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3988 if (hci_stack->ssp_auto_accept){ 3989 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3990 }; 3991 } else { 3992 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3993 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3994 // don't forward event to app 3995 hci_run(); 3996 return; 3997 } 3998 break; 3999 4000 case HCI_EVENT_USER_PASSKEY_REQUEST: 4001 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4002 if (hci_stack->ssp_auto_accept){ 4003 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4004 }; 4005 break; 4006 4007 case HCI_EVENT_MODE_CHANGE: 4008 handle = hci_event_mode_change_get_handle(packet); 4009 conn = hci_connection_for_handle(handle); 4010 if (!conn) break; 4011 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4012 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4013 break; 4014 #endif 4015 4016 case HCI_EVENT_ENCRYPTION_CHANGE: 4017 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4018 handle = hci_event_encryption_change_get_connection_handle(packet); 4019 conn = hci_connection_for_handle(handle); 4020 if (!conn) break; 4021 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4022 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4023 if (encryption_enabled){ 4024 if (hci_is_le_connection(conn)){ 4025 // For LE, we accept connection as encrypted 4026 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4027 } 4028 #ifdef ENABLE_CLASSIC 4029 else { 4030 4031 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4032 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4033 bool connected_uses_aes_ccm = encryption_enabled == 2; 4034 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4035 #ifdef ENABLE_TESTING_SUPPORT 4036 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4037 // - GAP/SEC/SEM/BI-31-C 4038 // - GAP/SEC/SEM/BI-32-C 4039 // - GAP/SEC/SEM/BI-33-C 4040 4041 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4042 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4043 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4044 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4045 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4046 } 4047 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4048 conn->link_key_type, new_link_key_type); 4049 conn->link_key_type = new_link_key_type; 4050 #else 4051 log_info("SC during pairing, but only E0 now -> abort"); 4052 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4053 break; 4054 #endif 4055 } 4056 4057 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4058 if (connected_uses_aes_ccm){ 4059 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4060 } 4061 4062 #ifdef ENABLE_TESTING_SUPPORT 4063 // work around for issue with PTS dongle 4064 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4065 #endif 4066 // validate encryption key size 4067 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4068 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4069 // already got encryption key size 4070 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4071 } else { 4072 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4073 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4074 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4075 } else { 4076 // if not, pretend everything is perfect 4077 hci_handle_read_encryption_key_size_complete(conn, 16); 4078 } 4079 } 4080 } 4081 #endif 4082 } else { 4083 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4084 } 4085 } else { 4086 #ifdef ENABLE_CLASSIC 4087 if (!hci_is_le_connection(conn)){ 4088 uint8_t status = hci_event_encryption_change_get_status(packet); 4089 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4090 conn->bonding_flags &= ~BONDING_DEDICATED; 4091 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4092 conn->bonding_status = status; 4093 } 4094 // trigger security update -> level 0 4095 hci_handle_mutual_authentication_completed(conn); 4096 } 4097 #endif 4098 } 4099 4100 break; 4101 4102 #ifdef ENABLE_CLASSIC 4103 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4104 handle = hci_event_authentication_complete_get_connection_handle(packet); 4105 conn = hci_connection_for_handle(handle); 4106 if (!conn) break; 4107 4108 // clear authentication active flag 4109 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4110 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4111 4112 // authenticated only if auth status == 0 4113 if (hci_event_authentication_complete_get_status(packet) == 0){ 4114 // authenticated 4115 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4116 4117 // If not already encrypted, start encryption 4118 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4119 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4120 break; 4121 } 4122 } 4123 4124 // emit updated security level (will be 0 if not authenticated) 4125 hci_handle_mutual_authentication_completed(conn); 4126 break; 4127 4128 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4129 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4130 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4131 if (!conn) break; 4132 4133 // treat successfully paired connection as authenticated 4134 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4135 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4136 } 4137 4138 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4139 break; 4140 #endif 4141 4142 // HCI_EVENT_DISCONNECTION_COMPLETE 4143 // has been split, to first notify stack before shutting connection down 4144 // see end of function, too. 4145 case HCI_EVENT_DISCONNECTION_COMPLETE: 4146 if (packet[2]) break; // status != 0 4147 handle = little_endian_read_16(packet, 3); 4148 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4149 if (hci_stack->acl_fragmentation_total_size > 0u) { 4150 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4151 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4152 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4153 hci_stack->acl_fragmentation_total_size = 0; 4154 hci_stack->acl_fragmentation_pos = 0; 4155 if (release_buffer){ 4156 hci_release_packet_buffer(); 4157 } 4158 } 4159 } 4160 4161 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4162 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4163 if (hci_stack->iso_fragmentation_total_size > 0u) { 4164 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4165 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4166 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4167 hci_stack->iso_fragmentation_total_size = 0; 4168 hci_stack->iso_fragmentation_pos = 0; 4169 if (release_buffer){ 4170 hci_release_packet_buffer(); 4171 } 4172 } 4173 } 4174 4175 // finalize iso stream for CIS handle 4176 iso_stream = hci_iso_stream_for_con_handle(handle); 4177 if (iso_stream != NULL){ 4178 hci_iso_stream_finalize(iso_stream); 4179 break; 4180 } 4181 4182 // finalize iso stream(s) for ACL handle 4183 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4184 while (btstack_linked_list_iterator_has_next(&it)){ 4185 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4186 if (iso_stream->acl_handle == handle ) { 4187 hci_iso_stream_finalize(iso_stream); 4188 } 4189 } 4190 #endif 4191 4192 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4193 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4194 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4195 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4196 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4197 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4198 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4199 hci_stack->num_cmd_packets = 1; 4200 } 4201 #endif 4202 4203 conn = hci_connection_for_handle(handle); 4204 if (!conn) break; 4205 #ifdef ENABLE_CLASSIC 4206 // pairing failed if it was ongoing 4207 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4208 #endif 4209 4210 // emit dedicatd bonding event 4211 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4212 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4213 } 4214 4215 // mark connection for shutdown, stop timers, reset state 4216 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4217 hci_connection_stop_timer(conn); 4218 hci_connection_init(conn); 4219 4220 #ifdef ENABLE_BLE 4221 #ifdef ENABLE_LE_PERIPHERAL 4222 // re-enable advertisements for le connections if active 4223 if (hci_is_le_connection(conn)){ 4224 hci_update_advertisements_enabled_for_current_roles(); 4225 } 4226 #endif 4227 #endif 4228 break; 4229 4230 case HCI_EVENT_HARDWARE_ERROR: 4231 log_error("Hardware Error: 0x%02x", packet[2]); 4232 if (hci_stack->hardware_error_callback){ 4233 (*hci_stack->hardware_error_callback)(packet[2]); 4234 } else { 4235 // if no special requests, just reboot stack 4236 hci_power_control_off(); 4237 hci_power_control_on(); 4238 } 4239 break; 4240 4241 #ifdef ENABLE_CLASSIC 4242 case HCI_EVENT_ROLE_CHANGE: 4243 if (packet[2]) break; // status != 0 4244 reverse_bd_addr(&packet[3], addr); 4245 addr_type = BD_ADDR_TYPE_ACL; 4246 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4247 if (!conn) break; 4248 conn->role = (hci_role_t) packet[9]; 4249 break; 4250 #endif 4251 4252 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4253 // release packet buffer only for asynchronous transport and if there are not further fragments 4254 if (hci_transport_synchronous()) { 4255 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4256 return; // instead of break: to avoid re-entering hci_run() 4257 } 4258 hci_stack->acl_fragmentation_tx_active = 0; 4259 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4260 hci_stack->iso_fragmentation_tx_active = 0; 4261 if (hci_stack->iso_fragmentation_total_size) break; 4262 #endif 4263 if (hci_stack->acl_fragmentation_total_size) break; 4264 hci_release_packet_buffer(); 4265 4266 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4267 hci_iso_notify_can_send_now(); 4268 #endif 4269 // L2CAP receives this event via the hci_emit_event below 4270 4271 #ifdef ENABLE_CLASSIC 4272 // For SCO, we do the can_send_now_check here 4273 hci_notify_if_sco_can_send_now(); 4274 #endif 4275 break; 4276 4277 #ifdef ENABLE_CLASSIC 4278 case HCI_EVENT_SCO_CAN_SEND_NOW: 4279 // For SCO, we do the can_send_now_check here 4280 hci_stack->sco_can_send_now = true; 4281 hci_notify_if_sco_can_send_now(); 4282 return; 4283 4284 // explode inquriy results for easier consumption 4285 case HCI_EVENT_INQUIRY_RESULT: 4286 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4287 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4288 gap_inquiry_explode(packet, size); 4289 break; 4290 #endif 4291 4292 #ifdef ENABLE_BLE 4293 case HCI_EVENT_LE_META: 4294 switch (packet[2]){ 4295 #ifdef ENABLE_LE_CENTRAL 4296 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4297 if (!hci_stack->le_scanning_enabled) break; 4298 le_handle_advertisement_report(packet, size); 4299 break; 4300 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4301 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4302 if (!hci_stack->le_scanning_enabled) break; 4303 le_handle_extended_advertisement_report(packet, size); 4304 break; 4305 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4306 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4307 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4308 break; 4309 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4310 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4311 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4312 while (btstack_linked_list_iterator_has_next(&it)) { 4313 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4314 if (advertising_set->advertising_handle == advertising_handle){ 4315 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4316 } 4317 } 4318 break; 4319 #endif 4320 #endif 4321 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4322 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4323 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4324 hci_handle_le_connection_complete_event(packet); 4325 break; 4326 4327 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4328 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4329 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4330 conn = hci_connection_for_handle(handle); 4331 if (!conn) break; 4332 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4333 break; 4334 4335 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4336 // connection 4337 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4338 conn = hci_connection_for_handle(handle); 4339 if (conn) { 4340 // read arguments 4341 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4342 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4343 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4344 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4345 4346 // validate against current connection parameter range 4347 le_connection_parameter_range_t existing_range; 4348 gap_get_connection_parameter_range(&existing_range); 4349 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4350 if (update_parameter){ 4351 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4352 conn->le_conn_interval_min = le_conn_interval_min; 4353 conn->le_conn_interval_max = le_conn_interval_max; 4354 conn->le_conn_latency = le_conn_latency; 4355 conn->le_supervision_timeout = le_supervision_timeout; 4356 } else { 4357 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4358 } 4359 } 4360 break; 4361 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4362 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4363 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4364 conn = hci_connection_for_handle(handle); 4365 if (conn) { 4366 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4367 } 4368 break; 4369 #endif 4370 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4371 case HCI_SUBEVENT_LE_CIS_REQUEST: 4372 // incoming CIS request, allocate iso stream object and cache metadata 4373 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4374 hci_subevent_le_cis_request_get_cig_id(packet), 4375 hci_subevent_le_cis_request_get_cis_id(packet)); 4376 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4377 if (iso_stream != NULL){ 4378 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4379 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4380 } 4381 break; 4382 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4383 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4384 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4385 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4386 iso_stream = hci_iso_stream_for_con_handle(handle); 4387 btstack_assert(iso_stream != NULL); 4388 // track connection info 4389 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4390 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4391 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4392 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4393 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4394 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4395 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4396 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4397 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4398 // CIS Accept by Peripheral 4399 if (status == ERROR_CODE_SUCCESS){ 4400 if (iso_stream->max_sdu_p_to_c > 0){ 4401 // we're peripheral and we will send data 4402 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4403 } else { 4404 // we're peripheral and we will only receive data 4405 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4406 } 4407 } else { 4408 hci_cis_handle_created(iso_stream, status); 4409 } 4410 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4411 } else { 4412 // CIG Setup by Central 4413 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4414 btstack_assert(cig != NULL); 4415 // update iso stream state 4416 if (status == ERROR_CODE_SUCCESS){ 4417 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4418 } else { 4419 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4420 } 4421 // update cig state 4422 uint8_t i; 4423 for (i=0;i<cig->num_cis;i++){ 4424 if (cig->cis_con_handles[i] == handle){ 4425 cig->cis_setup_active[i] = false; 4426 if (status == ERROR_CODE_SUCCESS){ 4427 cig->cis_established[i] = true; 4428 } else { 4429 hci_cis_handle_created(iso_stream, status); 4430 } 4431 } 4432 } 4433 4434 // trigger iso path setup if complete 4435 bool cis_setup_active = false; 4436 for (i=0;i<cig->num_cis;i++){ 4437 cis_setup_active |= cig->cis_setup_active[i]; 4438 } 4439 if (cis_setup_active == false){ 4440 cig->state_vars.next_cis = 0; 4441 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4442 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4443 } 4444 } 4445 } 4446 break; 4447 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4448 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4449 big = hci_big_for_handle(packet[4]); 4450 if (big != NULL){ 4451 uint8_t status = packet[3]; 4452 if (status == ERROR_CODE_SUCCESS){ 4453 // store bis_con_handles and trigger iso path setup 4454 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4455 uint8_t i; 4456 for (i=0;i<num_bis;i++){ 4457 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4458 big->bis_con_handles[i] = bis_handle; 4459 // assign bis handle 4460 btstack_linked_list_iterator_t it; 4461 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4462 while (btstack_linked_list_iterator_has_next(&it)){ 4463 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4464 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4465 (iso_stream->group_id == big->big_handle)){ 4466 iso_stream->cis_handle = bis_handle; 4467 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4468 break; 4469 } 4470 } 4471 } 4472 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4473 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4474 big->state_vars.next_bis = 0; 4475 } 4476 } else { 4477 // create BIG failed or has been stopped by us 4478 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4479 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4480 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4481 hci_emit_big_created(big, status); 4482 } else { 4483 hci_emit_big_terminated(big); 4484 } 4485 } 4486 } 4487 break; 4488 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4489 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4490 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4491 if (big != NULL){ 4492 // finalize associated ISO streams 4493 btstack_linked_list_iterator_t it; 4494 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4495 while (btstack_linked_list_iterator_has_next(&it)){ 4496 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4497 if (iso_stream->group_id == big->big_handle){ 4498 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4499 btstack_linked_list_iterator_remove(&it); 4500 btstack_memory_hci_iso_stream_free(iso_stream); 4501 } 4502 } 4503 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4504 switch (big->state){ 4505 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4506 hci_emit_big_created(big, big->state_vars.status); 4507 break; 4508 default: 4509 hci_emit_big_terminated(big); 4510 break; 4511 } 4512 } 4513 break; 4514 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4515 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4516 big_sync = hci_big_sync_for_handle(packet[4]); 4517 if (big_sync != NULL){ 4518 uint8_t status = packet[3]; 4519 uint8_t big_handle = packet[4]; 4520 if (status == ERROR_CODE_SUCCESS){ 4521 // store bis_con_handles and trigger iso path setup 4522 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4523 uint8_t i; 4524 for (i=0;i<num_bis;i++){ 4525 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4526 big_sync->bis_con_handles[i] = bis_handle; 4527 // setup iso_stream_t 4528 btstack_linked_list_iterator_t it; 4529 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4530 while (btstack_linked_list_iterator_has_next(&it)){ 4531 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4532 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4533 (iso_stream->group_id == big_sync->big_handle)){ 4534 iso_stream->cis_handle = bis_handle; 4535 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4536 break; 4537 } 4538 } 4539 } 4540 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4541 // trigger iso path setup 4542 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4543 big_sync->state_vars.next_bis = 0; 4544 } 4545 } else { 4546 // create BIG Sync failed or has been stopped by us 4547 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4548 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4549 hci_emit_big_sync_created(big_sync, status); 4550 } else { 4551 hci_emit_big_sync_stopped(big_handle); 4552 } 4553 } 4554 } 4555 break; 4556 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4557 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4558 big_sync = hci_big_sync_for_handle(packet[4]); 4559 if (big_sync != NULL){ 4560 uint8_t big_handle = packet[4]; 4561 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4562 hci_emit_big_sync_stopped(big_handle); 4563 } 4564 break; 4565 #endif 4566 default: 4567 break; 4568 } 4569 break; 4570 #endif 4571 case HCI_EVENT_VENDOR_SPECIFIC: 4572 // Vendor specific commands often create vendor specific event instead of num completed packets 4573 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4574 switch (hci_stack->manufacturer){ 4575 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4576 hci_stack->num_cmd_packets = 1; 4577 break; 4578 default: 4579 break; 4580 } 4581 break; 4582 default: 4583 break; 4584 } 4585 4586 handle_event_for_current_stack_state(packet, size); 4587 4588 // notify upper stack 4589 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4590 4591 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4592 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4593 handle = little_endian_read_16(packet, 3); 4594 hci_connection_t * aConn = hci_connection_for_handle(handle); 4595 // discard connection if app did not trigger a reconnect in the event handler 4596 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4597 hci_shutdown_connection(aConn); 4598 } 4599 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4600 hci_controller_dump_packets(); 4601 #endif 4602 } 4603 4604 // execute main loop 4605 hci_run(); 4606 } 4607 4608 #ifdef ENABLE_CLASSIC 4609 4610 static void sco_handler(uint8_t * packet, uint16_t size){ 4611 // lookup connection struct 4612 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4613 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4614 if (!conn) return; 4615 4616 #ifdef ENABLE_SCO_OVER_HCI 4617 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4618 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4619 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4620 packet[2] = 0x3c; 4621 memmove(&packet[3], &packet[23], 63); 4622 size = 63; 4623 } 4624 } 4625 4626 if (hci_have_usb_transport()){ 4627 // Nothing to do 4628 } else { 4629 // 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); 4630 if (hci_stack->synchronous_flow_control_enabled == 0){ 4631 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4632 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4633 if (conn->sco_tx_active == 0){ 4634 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4635 conn->sco_tx_active = 1; 4636 conn->sco_tx_ready = max_sco_packets; 4637 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4638 hci_notify_if_sco_can_send_now(); 4639 } 4640 } else { 4641 if (conn->sco_tx_ready < max_sco_packets){ 4642 conn->sco_tx_ready++; 4643 } 4644 hci_notify_if_sco_can_send_now(); 4645 } 4646 } 4647 } 4648 #endif 4649 4650 // deliver to app 4651 if (hci_stack->sco_packet_handler) { 4652 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4653 } 4654 4655 #ifdef HAVE_SCO_TRANSPORT 4656 // We can send one packet for each received packet 4657 conn->sco_tx_ready++; 4658 hci_notify_if_sco_can_send_now(); 4659 #endif 4660 4661 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4662 conn->num_packets_completed++; 4663 hci_stack->host_completed_packets = 1; 4664 hci_run(); 4665 #endif 4666 } 4667 #endif 4668 4669 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4670 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4671 // propagate ISO packets received as ACL 4672 hci_iso_stream_t * iso_stream = NULL; 4673 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4674 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4675 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4676 if (iso_stream != NULL){ 4677 packet_type = HCI_ISO_DATA_PACKET; 4678 } 4679 } 4680 #endif 4681 4682 hci_dump_packet(packet_type, 1, packet, size); 4683 switch (packet_type) { 4684 case HCI_EVENT_PACKET: 4685 event_handler(packet, size); 4686 break; 4687 case HCI_ACL_DATA_PACKET: 4688 acl_handler(packet, size); 4689 break; 4690 #ifdef ENABLE_CLASSIC 4691 case HCI_SCO_DATA_PACKET: 4692 sco_handler(packet, size); 4693 break; 4694 #endif 4695 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4696 case HCI_ISO_DATA_PACKET: 4697 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4698 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4699 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4700 } 4701 hci_iso_packet_handler(iso_stream, packet, size); 4702 break; 4703 #endif 4704 default: 4705 break; 4706 } 4707 } 4708 4709 /** 4710 * @brief Add event packet handler. 4711 */ 4712 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4713 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4714 } 4715 4716 /** 4717 * @brief Remove event packet handler. 4718 */ 4719 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4720 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4721 } 4722 4723 /** Register HCI packet handlers */ 4724 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4725 hci_stack->acl_packet_handler = handler; 4726 } 4727 4728 #ifdef ENABLE_CLASSIC 4729 /** 4730 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4731 */ 4732 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4733 hci_stack->sco_packet_handler = handler; 4734 } 4735 #endif 4736 4737 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4738 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4739 hci_stack->iso_packet_handler = handler; 4740 } 4741 #endif 4742 4743 static void hci_state_reset(void){ 4744 // no connections yet 4745 hci_stack->connections = NULL; 4746 4747 // keep discoverable/connectable as this has been requested by the client(s) 4748 // hci_stack->discoverable = 0; 4749 // hci_stack->connectable = 0; 4750 // hci_stack->bondable = 1; 4751 // hci_stack->own_addr_type = 0; 4752 4753 // buffer is free 4754 hci_stack->hci_packet_buffer_reserved = false; 4755 4756 // no pending cmds 4757 hci_stack->decline_reason = 0; 4758 4759 hci_stack->secure_connections_active = false; 4760 4761 #ifdef ENABLE_CLASSIC 4762 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4763 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4764 4765 hci_stack->gap_tasks_classic = 4766 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4767 GAP_TASK_SET_CLASS_OF_DEVICE | 4768 GAP_TASK_SET_LOCAL_NAME | 4769 GAP_TASK_SET_EIR_DATA | 4770 GAP_TASK_WRITE_SCAN_ENABLE | 4771 GAP_TASK_WRITE_PAGE_TIMEOUT; 4772 #endif 4773 4774 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4775 hci_stack->classic_read_local_oob_data = false; 4776 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4777 #endif 4778 4779 // LE 4780 #ifdef ENABLE_BLE 4781 memset(hci_stack->le_random_address, 0, 6); 4782 hci_stack->le_random_address_set = 0; 4783 #endif 4784 #ifdef ENABLE_LE_CENTRAL 4785 hci_stack->le_scanning_active = false; 4786 hci_stack->le_scanning_param_update = true; 4787 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4788 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4789 hci_stack->le_whitelist_capacity = 0; 4790 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4791 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4792 #endif 4793 #endif 4794 #ifdef ENABLE_LE_PERIPHERAL 4795 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4796 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4797 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4798 } 4799 if (hci_stack->le_advertisements_data != NULL){ 4800 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4801 } 4802 #endif 4803 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4804 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4805 #endif 4806 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4807 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4808 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4809 #endif 4810 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4811 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4812 #endif 4813 } 4814 4815 #ifdef ENABLE_CLASSIC 4816 /** 4817 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4818 */ 4819 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4820 // store and open remote device db 4821 hci_stack->link_key_db = link_key_db; 4822 if (hci_stack->link_key_db) { 4823 hci_stack->link_key_db->open(); 4824 } 4825 } 4826 #endif 4827 4828 void hci_init(const hci_transport_t *transport, const void *config){ 4829 4830 #ifdef HAVE_MALLOC 4831 if (!hci_stack) { 4832 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4833 } 4834 #else 4835 hci_stack = &hci_stack_static; 4836 #endif 4837 memset(hci_stack, 0, sizeof(hci_stack_t)); 4838 4839 // reference to use transport layer implementation 4840 hci_stack->hci_transport = transport; 4841 4842 // reference to used config 4843 hci_stack->config = config; 4844 4845 // setup pointer for outgoing packet buffer 4846 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4847 4848 // max acl payload size defined in config.h 4849 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4850 4851 // register packet handlers with transport 4852 transport->register_packet_handler(&packet_handler); 4853 4854 hci_stack->state = HCI_STATE_OFF; 4855 4856 // class of device 4857 hci_stack->class_of_device = 0x007a020c; // Smartphone 4858 4859 // bondable by default 4860 hci_stack->bondable = 1; 4861 4862 #ifdef ENABLE_CLASSIC 4863 // classic name 4864 hci_stack->local_name = default_classic_name; 4865 4866 // Master slave policy 4867 hci_stack->master_slave_policy = 1; 4868 4869 // Allow Role Switch 4870 hci_stack->allow_role_switch = 1; 4871 4872 // Default / minimum security level = 2 4873 hci_stack->gap_security_level = LEVEL_2; 4874 4875 // Default Security Mode 4 4876 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4877 4878 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4879 hci_stack->gap_required_encyrption_key_size = 7; 4880 4881 // Link Supervision Timeout 4882 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4883 4884 // All ACL packet types are enabledh 4885 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4886 #endif 4887 4888 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4889 hci_stack->ssp_enable = 1; 4890 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4891 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4892 hci_stack->ssp_auto_accept = 1; 4893 4894 // Secure Connections: enable (requires support from Controller) 4895 hci_stack->secure_connections_enable = true; 4896 4897 // voice setting - signed 16 bit pcm data with CVSD over the air 4898 hci_stack->sco_voice_setting = 0x60; 4899 4900 #ifdef ENABLE_BLE 4901 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4902 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4903 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4904 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4905 hci_stack->le_connection_latency = 4; // 4 4906 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4907 hci_stack->le_minimum_ce_length = 0; // 0 ms 4908 hci_stack->le_maximum_ce_length = 0; // 0 ms 4909 #endif 4910 4911 #ifdef ENABLE_LE_CENTRAL 4912 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4913 4914 // default LE Scanning 4915 hci_stack->le_scan_type = 0x01; // active 4916 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4917 hci_stack->le_scan_window = 0x30; // 30 ms 4918 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4919 #endif 4920 4921 #ifdef ENABLE_LE_PERIPHERAL 4922 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4923 4924 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4925 hci_stack->le_advertisements_interval_min = 0x0800; 4926 hci_stack->le_advertisements_interval_max = 0x0800; 4927 hci_stack->le_advertisements_type = 0; 4928 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4929 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4930 hci_stack->le_advertisements_channel_map = 0x07; 4931 hci_stack->le_advertisements_filter_policy = 0; 4932 #endif 4933 4934 // connection parameter range used to answer connection parameter update requests in l2cap 4935 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4936 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4937 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4938 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4939 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4940 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4941 4942 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4943 hci_stack->iso_packets_to_queue = 1; 4944 #endif 4945 4946 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4947 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4948 #endif 4949 4950 hci_state_reset(); 4951 } 4952 4953 void hci_deinit(void){ 4954 btstack_run_loop_remove_timer(&hci_stack->timeout); 4955 #ifdef HAVE_MALLOC 4956 if (hci_stack) { 4957 free(hci_stack); 4958 } 4959 #endif 4960 hci_stack = NULL; 4961 4962 #ifdef ENABLE_CLASSIC 4963 disable_l2cap_timeouts = 0; 4964 #endif 4965 } 4966 4967 /** 4968 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4969 */ 4970 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4971 hci_stack->chipset = chipset_driver; 4972 4973 // reset chipset driver - init is also called on power_up 4974 if (hci_stack->chipset && hci_stack->chipset->init){ 4975 hci_stack->chipset->init(hci_stack->config); 4976 } 4977 } 4978 4979 void hci_enable_custom_pre_init(void){ 4980 hci_stack->chipset_pre_init = true; 4981 } 4982 4983 /** 4984 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4985 */ 4986 void hci_set_control(const btstack_control_t *hardware_control){ 4987 // references to used control implementation 4988 hci_stack->control = hardware_control; 4989 // init with transport config 4990 hardware_control->init(hci_stack->config); 4991 } 4992 4993 static void hci_discard_connections(void){ 4994 btstack_linked_list_iterator_t it; 4995 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4996 while (btstack_linked_list_iterator_has_next(&it)){ 4997 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4998 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4999 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5000 hci_shutdown_connection(connection); 5001 } 5002 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5003 while (hci_stack->iso_streams != NULL){ 5004 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5005 } 5006 #endif 5007 } 5008 5009 void hci_close(void){ 5010 5011 #ifdef ENABLE_CLASSIC 5012 // close remote device db 5013 if (hci_stack->link_key_db) { 5014 hci_stack->link_key_db->close(); 5015 } 5016 #endif 5017 5018 hci_discard_connections(); 5019 5020 hci_power_control(HCI_POWER_OFF); 5021 5022 #ifdef HAVE_MALLOC 5023 free(hci_stack); 5024 #endif 5025 hci_stack = NULL; 5026 } 5027 5028 #ifdef HAVE_SCO_TRANSPORT 5029 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5030 hci_stack->sco_transport = sco_transport; 5031 sco_transport->register_packet_handler(&packet_handler); 5032 } 5033 #endif 5034 5035 #ifdef ENABLE_CLASSIC 5036 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5037 // validate ranage and set 5038 if (encryption_key_size < 7) return; 5039 if (encryption_key_size > 16) return; 5040 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5041 } 5042 5043 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5044 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5045 hci_stack->gap_security_mode = security_mode; 5046 return ERROR_CODE_SUCCESS; 5047 } else { 5048 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5049 } 5050 } 5051 5052 gap_security_mode_t gap_get_security_mode(void){ 5053 return hci_stack->gap_security_mode; 5054 } 5055 5056 void gap_set_security_level(gap_security_level_t security_level){ 5057 hci_stack->gap_security_level = security_level; 5058 } 5059 5060 gap_security_level_t gap_get_security_level(void){ 5061 if (hci_stack->gap_secure_connections_only_mode){ 5062 return LEVEL_4; 5063 } 5064 return hci_stack->gap_security_level; 5065 } 5066 5067 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5068 hci_stack->gap_minimal_service_security_level = security_level; 5069 } 5070 5071 void gap_set_secure_connections_only_mode(bool enable){ 5072 hci_stack->gap_secure_connections_only_mode = enable; 5073 } 5074 5075 bool gap_get_secure_connections_only_mode(void){ 5076 return hci_stack->gap_secure_connections_only_mode; 5077 } 5078 #endif 5079 5080 #ifdef ENABLE_CLASSIC 5081 void gap_set_class_of_device(uint32_t class_of_device){ 5082 hci_stack->class_of_device = class_of_device; 5083 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5084 hci_run(); 5085 } 5086 5087 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5088 hci_stack->default_link_policy_settings = default_link_policy_settings; 5089 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5090 hci_run(); 5091 } 5092 5093 void gap_set_allow_role_switch(bool allow_role_switch){ 5094 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5095 } 5096 5097 uint8_t hci_get_allow_role_switch(void){ 5098 return hci_stack->allow_role_switch; 5099 } 5100 5101 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5102 hci_stack->link_supervision_timeout = link_supervision_timeout; 5103 } 5104 5105 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5106 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5107 } 5108 5109 uint16_t hci_automatic_flush_timeout(void){ 5110 return hci_stack->automatic_flush_timeout; 5111 } 5112 5113 void hci_disable_l2cap_timeout_check(void){ 5114 disable_l2cap_timeouts = 1; 5115 } 5116 #endif 5117 5118 #ifndef HAVE_HOST_CONTROLLER_API 5119 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5120 void hci_set_bd_addr(bd_addr_t addr){ 5121 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5122 hci_stack->custom_bd_addr_set = 1; 5123 } 5124 #endif 5125 5126 // State-Module-Driver overview 5127 // state module low-level 5128 // HCI_STATE_OFF off close 5129 // HCI_STATE_INITIALIZING, on open 5130 // HCI_STATE_WORKING, on open 5131 // HCI_STATE_HALTING, on open 5132 // HCI_STATE_SLEEPING, off/sleep close 5133 // HCI_STATE_FALLING_ASLEEP on open 5134 5135 static int hci_power_control_on(void){ 5136 5137 // power on 5138 int err = 0; 5139 if (hci_stack->control && hci_stack->control->on){ 5140 err = (*hci_stack->control->on)(); 5141 } 5142 if (err){ 5143 log_error( "POWER_ON failed"); 5144 hci_emit_hci_open_failed(); 5145 return err; 5146 } 5147 5148 // int chipset driver 5149 if (hci_stack->chipset && hci_stack->chipset->init){ 5150 hci_stack->chipset->init(hci_stack->config); 5151 } 5152 5153 // init transport 5154 if (hci_stack->hci_transport->init){ 5155 hci_stack->hci_transport->init(hci_stack->config); 5156 } 5157 5158 // open transport 5159 err = hci_stack->hci_transport->open(); 5160 if (err){ 5161 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5162 if (hci_stack->control && hci_stack->control->off){ 5163 (*hci_stack->control->off)(); 5164 } 5165 hci_emit_hci_open_failed(); 5166 return err; 5167 } 5168 return 0; 5169 } 5170 5171 static void hci_power_control_off(void){ 5172 5173 log_info("hci_power_control_off"); 5174 5175 // close low-level device 5176 hci_stack->hci_transport->close(); 5177 5178 log_info("hci_power_control_off - hci_transport closed"); 5179 5180 // power off 5181 if (hci_stack->control && hci_stack->control->off){ 5182 (*hci_stack->control->off)(); 5183 } 5184 5185 log_info("hci_power_control_off - control closed"); 5186 5187 hci_stack->state = HCI_STATE_OFF; 5188 } 5189 5190 static void hci_power_control_sleep(void){ 5191 5192 log_info("hci_power_control_sleep"); 5193 5194 #if 0 5195 // don't close serial port during sleep 5196 5197 // close low-level device 5198 hci_stack->hci_transport->close(hci_stack->config); 5199 #endif 5200 5201 // sleep mode 5202 if (hci_stack->control && hci_stack->control->sleep){ 5203 (*hci_stack->control->sleep)(); 5204 } 5205 5206 hci_stack->state = HCI_STATE_SLEEPING; 5207 } 5208 5209 static int hci_power_control_wake(void){ 5210 5211 log_info("hci_power_control_wake"); 5212 5213 // wake on 5214 if (hci_stack->control && hci_stack->control->wake){ 5215 (*hci_stack->control->wake)(); 5216 } 5217 5218 #if 0 5219 // open low-level device 5220 int err = hci_stack->hci_transport->open(hci_stack->config); 5221 if (err){ 5222 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5223 if (hci_stack->control && hci_stack->control->off){ 5224 (*hci_stack->control->off)(); 5225 } 5226 hci_emit_hci_open_failed(); 5227 return err; 5228 } 5229 #endif 5230 5231 return 0; 5232 } 5233 5234 static void hci_power_enter_initializing_state(void){ 5235 // set up state machine 5236 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5237 hci_stack->hci_packet_buffer_reserved = false; 5238 hci_stack->state = HCI_STATE_INITIALIZING; 5239 5240 #ifndef HAVE_HOST_CONTROLLER_API 5241 if (hci_stack->chipset_pre_init) { 5242 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5243 } else 5244 #endif 5245 { 5246 hci_stack->substate = HCI_INIT_SEND_RESET; 5247 } 5248 } 5249 5250 static void hci_power_enter_halting_state(void){ 5251 #ifdef ENABLE_BLE 5252 // drop entries scheduled for removal, mark others for re-adding 5253 btstack_linked_list_iterator_t it; 5254 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5255 while (btstack_linked_list_iterator_has_next(&it)){ 5256 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5257 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5258 btstack_linked_list_iterator_remove(&it); 5259 btstack_memory_whitelist_entry_free(entry); 5260 } else { 5261 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5262 } 5263 } 5264 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5265 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5266 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5267 while (btstack_linked_list_iterator_has_next(&it)){ 5268 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5269 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5270 btstack_linked_list_iterator_remove(&it); 5271 btstack_memory_periodic_advertiser_list_entry_free(entry); 5272 } else { 5273 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5274 continue; 5275 } 5276 } 5277 #endif 5278 #endif 5279 // see hci_run 5280 hci_stack->state = HCI_STATE_HALTING; 5281 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5282 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5283 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5284 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5285 btstack_run_loop_add_timer(&hci_stack->timeout); 5286 } 5287 5288 // returns error 5289 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5290 int err; 5291 switch (power_mode){ 5292 case HCI_POWER_ON: 5293 err = hci_power_control_on(); 5294 if (err != 0) { 5295 log_error("hci_power_control_on() error %d", err); 5296 return err; 5297 } 5298 hci_power_enter_initializing_state(); 5299 break; 5300 case HCI_POWER_OFF: 5301 // do nothing 5302 break; 5303 case HCI_POWER_SLEEP: 5304 // do nothing (with SLEEP == OFF) 5305 break; 5306 default: 5307 btstack_assert(false); 5308 break; 5309 } 5310 return ERROR_CODE_SUCCESS; 5311 } 5312 5313 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5314 switch (power_mode){ 5315 case HCI_POWER_ON: 5316 // do nothing 5317 break; 5318 case HCI_POWER_OFF: 5319 // no connections yet, just turn it off 5320 hci_power_control_off(); 5321 break; 5322 case HCI_POWER_SLEEP: 5323 // no connections yet, just turn it off 5324 hci_power_control_sleep(); 5325 break; 5326 default: 5327 btstack_assert(false); 5328 break; 5329 } 5330 return ERROR_CODE_SUCCESS; 5331 } 5332 5333 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5334 switch (power_mode){ 5335 case HCI_POWER_ON: 5336 // do nothing 5337 break; 5338 case HCI_POWER_OFF: 5339 hci_power_enter_halting_state(); 5340 break; 5341 case HCI_POWER_SLEEP: 5342 // see hci_run 5343 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5344 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5345 break; 5346 default: 5347 btstack_assert(false); 5348 break; 5349 } 5350 return ERROR_CODE_SUCCESS; 5351 } 5352 5353 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5354 switch (power_mode){ 5355 case HCI_POWER_ON: 5356 hci_power_enter_initializing_state(); 5357 break; 5358 case HCI_POWER_OFF: 5359 // do nothing 5360 break; 5361 case HCI_POWER_SLEEP: 5362 // see hci_run 5363 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5364 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5365 break; 5366 default: 5367 btstack_assert(false); 5368 break; 5369 } 5370 return ERROR_CODE_SUCCESS; 5371 } 5372 5373 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5374 switch (power_mode){ 5375 case HCI_POWER_ON: 5376 hci_power_enter_initializing_state(); 5377 break; 5378 case HCI_POWER_OFF: 5379 hci_power_enter_halting_state(); 5380 break; 5381 case HCI_POWER_SLEEP: 5382 // do nothing 5383 break; 5384 default: 5385 btstack_assert(false); 5386 break; 5387 } 5388 return ERROR_CODE_SUCCESS; 5389 } 5390 5391 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5392 int err; 5393 switch (power_mode){ 5394 case HCI_POWER_ON: 5395 err = hci_power_control_wake(); 5396 if (err) return err; 5397 hci_power_enter_initializing_state(); 5398 break; 5399 case HCI_POWER_OFF: 5400 hci_power_enter_halting_state(); 5401 break; 5402 case HCI_POWER_SLEEP: 5403 // do nothing 5404 break; 5405 default: 5406 btstack_assert(false); 5407 break; 5408 } 5409 return ERROR_CODE_SUCCESS; 5410 } 5411 5412 int hci_power_control(HCI_POWER_MODE power_mode){ 5413 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5414 btstack_run_loop_remove_timer(&hci_stack->timeout); 5415 int err = 0; 5416 switch (hci_stack->state){ 5417 case HCI_STATE_OFF: 5418 err = hci_power_control_state_off(power_mode); 5419 break; 5420 case HCI_STATE_INITIALIZING: 5421 err = hci_power_control_state_initializing(power_mode); 5422 break; 5423 case HCI_STATE_WORKING: 5424 err = hci_power_control_state_working(power_mode); 5425 break; 5426 case HCI_STATE_HALTING: 5427 err = hci_power_control_state_halting(power_mode); 5428 break; 5429 case HCI_STATE_FALLING_ASLEEP: 5430 err = hci_power_control_state_falling_asleep(power_mode); 5431 break; 5432 case HCI_STATE_SLEEPING: 5433 err = hci_power_control_state_sleeping(power_mode); 5434 break; 5435 default: 5436 btstack_assert(false); 5437 break; 5438 } 5439 if (err != 0){ 5440 return err; 5441 } 5442 5443 // create internal event 5444 hci_emit_state(); 5445 5446 // trigger next/first action 5447 hci_run(); 5448 5449 return 0; 5450 } 5451 5452 5453 static void hci_halting_run(void) { 5454 5455 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5456 5457 hci_connection_t *connection; 5458 #ifdef ENABLE_BLE 5459 #ifdef ENABLE_LE_PERIPHERAL 5460 bool stop_advertismenets; 5461 #endif 5462 #endif 5463 5464 switch (hci_stack->substate) { 5465 case HCI_HALTING_CLASSIC_STOP: 5466 #ifdef ENABLE_CLASSIC 5467 if (!hci_can_send_command_packet_now()) return; 5468 5469 if (hci_stack->connectable || hci_stack->discoverable){ 5470 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5471 hci_send_cmd(&hci_write_scan_enable, 0); 5472 return; 5473 } 5474 #endif 5475 /* fall through */ 5476 5477 case HCI_HALTING_LE_ADV_STOP: 5478 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5479 5480 #ifdef ENABLE_BLE 5481 #ifdef ENABLE_LE_PERIPHERAL 5482 if (!hci_can_send_command_packet_now()) return; 5483 5484 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5485 5486 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5487 if (hci_extended_advertising_supported()){ 5488 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5489 btstack_linked_list_iterator_t it; 5490 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5491 // stop all periodic advertisements and check if an extended set is active 5492 while (btstack_linked_list_iterator_has_next(&it)){ 5493 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5494 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5495 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5496 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5497 return; 5498 } 5499 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5500 stop_advertismenets = true; 5501 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5502 } 5503 } 5504 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5505 if (stop_advertismenets){ 5506 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5507 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5508 return; 5509 } 5510 } else 5511 #else /* ENABLE_LE_PERIPHERAL */ 5512 { 5513 if (stop_advertismenets) { 5514 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5515 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5516 return; 5517 } 5518 } 5519 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5520 #endif /* ENABLE_LE_PERIPHERAL */ 5521 #endif /* ENABLE_BLE */ 5522 5523 /* fall through */ 5524 5525 case HCI_HALTING_LE_SCAN_STOP: 5526 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5527 if (!hci_can_send_command_packet_now()) return; 5528 5529 #ifdef ENABLE_BLE 5530 #ifdef ENABLE_LE_CENTRAL 5531 if (hci_stack->le_scanning_active){ 5532 hci_le_scan_stop(); 5533 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5534 return; 5535 } 5536 #endif 5537 #endif 5538 5539 /* fall through */ 5540 5541 case HCI_HALTING_DISCONNECT_ALL: 5542 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5543 if (!hci_can_send_command_packet_now()) return; 5544 5545 // close all open connections 5546 connection = (hci_connection_t *) hci_stack->connections; 5547 if (connection) { 5548 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5549 5550 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5551 5552 // check state 5553 switch(connection->state) { 5554 case SENT_DISCONNECT: 5555 case RECEIVED_DISCONNECTION_COMPLETE: 5556 // wait until connection is gone 5557 return; 5558 default: 5559 break; 5560 } 5561 5562 // finally, send the disconnect command 5563 connection->state = SENT_DISCONNECT; 5564 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5565 return; 5566 } 5567 5568 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5569 // stop BIGs and BIG Syncs 5570 if (hci_stack->le_audio_bigs != NULL){ 5571 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5572 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5573 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5574 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5575 return; 5576 } 5577 if (hci_stack->le_audio_big_syncs != NULL){ 5578 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5579 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5580 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5581 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5582 return; 5583 } 5584 #endif 5585 5586 btstack_run_loop_remove_timer(&hci_stack->timeout); 5587 5588 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5589 log_info("HCI_STATE_HALTING: wait 50 ms"); 5590 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5591 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5592 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5593 btstack_run_loop_add_timer(&hci_stack->timeout); 5594 break; 5595 5596 case HCI_HALTING_W4_CLOSE_TIMER: 5597 // keep waiting 5598 break; 5599 5600 case HCI_HALTING_CLOSE: 5601 // close left over connections (that had not been properly closed before) 5602 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5603 hci_discard_connections(); 5604 5605 log_info("HCI_STATE_HALTING, calling off"); 5606 5607 // switch mode 5608 hci_power_control_off(); 5609 5610 log_info("HCI_STATE_HALTING, emitting state"); 5611 hci_emit_state(); 5612 log_info("HCI_STATE_HALTING, done"); 5613 break; 5614 5615 default: 5616 break; 5617 } 5618 }; 5619 5620 static void hci_falling_asleep_run(void){ 5621 hci_connection_t * connection; 5622 switch(hci_stack->substate) { 5623 case HCI_FALLING_ASLEEP_DISCONNECT: 5624 log_info("HCI_STATE_FALLING_ASLEEP"); 5625 // close all open connections 5626 connection = (hci_connection_t *) hci_stack->connections; 5627 if (connection){ 5628 5629 // send disconnect 5630 if (!hci_can_send_command_packet_now()) return; 5631 5632 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5633 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5634 5635 // send disconnected event right away - causes higher layer connections to get closed, too. 5636 hci_shutdown_connection(connection); 5637 return; 5638 } 5639 5640 if (hci_classic_supported()){ 5641 // disable page and inquiry scan 5642 if (!hci_can_send_command_packet_now()) return; 5643 5644 log_info("HCI_STATE_HALTING, disabling inq scans"); 5645 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5646 5647 // continue in next sub state 5648 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5649 break; 5650 } 5651 5652 /* fall through */ 5653 5654 case HCI_FALLING_ASLEEP_COMPLETE: 5655 log_info("HCI_STATE_HALTING, calling sleep"); 5656 // switch mode 5657 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5658 hci_emit_state(); 5659 break; 5660 5661 default: 5662 break; 5663 } 5664 } 5665 5666 #ifdef ENABLE_CLASSIC 5667 5668 static void hci_update_scan_enable(void){ 5669 // 2 = page scan, 1 = inq scan 5670 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5671 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5672 hci_run(); 5673 } 5674 5675 void gap_discoverable_control(uint8_t enable){ 5676 if (enable) enable = 1; // normalize argument 5677 5678 if (hci_stack->discoverable == enable){ 5679 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5680 return; 5681 } 5682 5683 hci_stack->discoverable = enable; 5684 hci_update_scan_enable(); 5685 } 5686 5687 void gap_connectable_control(uint8_t enable){ 5688 if (enable) enable = 1; // normalize argument 5689 5690 // don't emit event 5691 if (hci_stack->connectable == enable) return; 5692 5693 hci_stack->connectable = enable; 5694 hci_update_scan_enable(); 5695 } 5696 #endif 5697 5698 void gap_local_bd_addr(bd_addr_t address_buffer){ 5699 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5700 } 5701 5702 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5703 static void hci_host_num_completed_packets(void){ 5704 5705 // create packet manually as arrays are not supported and num_commands should not get reduced 5706 hci_reserve_packet_buffer(); 5707 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5708 5709 uint16_t size = 0; 5710 uint16_t num_handles = 0; 5711 packet[size++] = 0x35; 5712 packet[size++] = 0x0c; 5713 size++; // skip param len 5714 size++; // skip num handles 5715 5716 // add { handle, packets } entries 5717 btstack_linked_item_t * it; 5718 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5719 hci_connection_t * connection = (hci_connection_t *) it; 5720 if (connection->num_packets_completed){ 5721 little_endian_store_16(packet, size, connection->con_handle); 5722 size += 2; 5723 little_endian_store_16(packet, size, connection->num_packets_completed); 5724 size += 2; 5725 // 5726 num_handles++; 5727 connection->num_packets_completed = 0; 5728 } 5729 } 5730 5731 packet[2] = size - 3; 5732 packet[3] = num_handles; 5733 5734 hci_stack->host_completed_packets = 0; 5735 5736 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5737 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5738 5739 // release packet buffer for synchronous transport implementations 5740 if (hci_transport_synchronous()){ 5741 hci_release_packet_buffer(); 5742 hci_emit_transport_packet_sent(); 5743 } 5744 } 5745 #endif 5746 5747 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5748 UNUSED(ds); 5749 hci_stack->substate = HCI_HALTING_CLOSE; 5750 hci_halting_run(); 5751 } 5752 5753 static bool hci_run_acl_fragments(void){ 5754 if (hci_stack->acl_fragmentation_total_size > 0u) { 5755 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5756 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5757 if (connection) { 5758 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5759 hci_send_acl_packet_fragments(connection); 5760 return true; 5761 } 5762 } else { 5763 // connection gone -> discard further fragments 5764 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5765 hci_stack->acl_fragmentation_total_size = 0; 5766 hci_stack->acl_fragmentation_pos = 0; 5767 } 5768 } 5769 return false; 5770 } 5771 5772 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5773 static bool hci_run_iso_fragments(void){ 5774 if (hci_stack->iso_fragmentation_total_size > 0u) { 5775 // TODO: flow control 5776 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5777 hci_send_iso_packet_fragments(); 5778 return true; 5779 } 5780 } 5781 return false; 5782 } 5783 #endif 5784 5785 #ifdef ENABLE_CLASSIC 5786 5787 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5788 static bool hci_classic_operation_active(void) { 5789 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5790 return true; 5791 } 5792 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5793 return true; 5794 } 5795 btstack_linked_item_t * it; 5796 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5797 hci_connection_t *connection = (hci_connection_t *) it; 5798 switch (connection->state) { 5799 case SENT_CREATE_CONNECTION: 5800 case SENT_CANCEL_CONNECTION: 5801 case SENT_DISCONNECT: 5802 return true; 5803 default: 5804 break; 5805 } 5806 } 5807 return false; 5808 } 5809 #endif 5810 5811 static bool hci_run_general_gap_classic(void){ 5812 5813 // assert stack is working and classic is active 5814 if (hci_classic_supported() == false) return false; 5815 if (hci_stack->state != HCI_STATE_WORKING) return false; 5816 5817 // decline incoming connections 5818 if (hci_stack->decline_reason){ 5819 uint8_t reason = hci_stack->decline_reason; 5820 hci_stack->decline_reason = 0; 5821 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5822 return true; 5823 } 5824 5825 if (hci_stack->gap_tasks_classic != 0){ 5826 hci_run_gap_tasks_classic(); 5827 return true; 5828 } 5829 5830 // start/stop inquiry 5831 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5832 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5833 if (hci_classic_operation_active() == false) 5834 #endif 5835 { 5836 uint8_t duration = hci_stack->inquiry_state; 5837 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5838 if (hci_stack->inquiry_max_period_length != 0){ 5839 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); 5840 } else { 5841 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5842 } 5843 return true; 5844 } 5845 } 5846 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5847 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5848 hci_send_cmd(&hci_inquiry_cancel); 5849 return true; 5850 } 5851 5852 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5853 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5854 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5855 return true; 5856 } 5857 5858 // remote name request 5859 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5860 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5861 if (hci_classic_operation_active() == false) 5862 #endif 5863 { 5864 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5865 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5866 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5867 return true; 5868 } 5869 } 5870 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5871 // Local OOB data 5872 if (hci_stack->classic_read_local_oob_data){ 5873 hci_stack->classic_read_local_oob_data = false; 5874 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5875 hci_send_cmd(&hci_read_local_extended_oob_data); 5876 } else { 5877 hci_send_cmd(&hci_read_local_oob_data); 5878 } 5879 } 5880 #endif 5881 // pairing 5882 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5883 uint8_t state = hci_stack->gap_pairing_state; 5884 uint8_t pin_code[PIN_CODE_LEN]; 5885 switch (state){ 5886 case GAP_PAIRING_STATE_SEND_PIN: 5887 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5888 memset(pin_code, 0, 16); 5889 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5890 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5891 break; 5892 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5893 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5894 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5895 break; 5896 case GAP_PAIRING_STATE_SEND_PASSKEY: 5897 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5898 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5899 break; 5900 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5901 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5902 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5903 break; 5904 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5905 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5906 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5907 break; 5908 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5909 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5910 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5911 break; 5912 default: 5913 break; 5914 } 5915 return true; 5916 } 5917 return false; 5918 } 5919 #endif 5920 5921 #ifdef ENABLE_BLE 5922 5923 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5924 static uint8_t hci_le_num_phys(uint8_t phys){ 5925 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5926 btstack_assert(phys); 5927 return num_bits_set[phys]; 5928 } 5929 #endif 5930 5931 #ifdef ENABLE_LE_CENTRAL 5932 static void hci_le_scan_stop(void){ 5933 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5934 if (hci_extended_advertising_supported()) { 5935 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5936 } else 5937 #endif 5938 { 5939 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5940 } 5941 } 5942 5943 static void 5944 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5945 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5946 if (hci_extended_advertising_supported()) { 5947 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5948 uint16_t le_connection_scan_interval[3]; 5949 uint16_t le_connection_scan_window[3]; 5950 uint16_t le_connection_interval_min[3]; 5951 uint16_t le_connection_interval_max[3]; 5952 uint16_t le_connection_latency[3]; 5953 uint16_t le_supervision_timeout[3]; 5954 uint16_t le_minimum_ce_length[3]; 5955 uint16_t le_maximum_ce_length[3]; 5956 5957 uint8_t i; 5958 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5959 for (i=0;i<num_phys;i++){ 5960 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5961 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5962 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5963 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5964 le_connection_latency[i] = hci_stack->le_connection_latency; 5965 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5966 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5967 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5968 } 5969 hci_send_cmd(&hci_le_extended_create_connection, 5970 initiator_filter_policy, 5971 hci_stack->le_connection_own_addr_type, // our addr type: 5972 address_type, // peer address type 5973 address, // peer bd addr 5974 hci_stack->le_connection_phys, // initiating PHY 5975 le_connection_scan_interval, // conn scan interval 5976 le_connection_scan_window, // conn scan windows 5977 le_connection_interval_min, // conn interval min 5978 le_connection_interval_max, // conn interval max 5979 le_connection_latency, // conn latency 5980 le_supervision_timeout, // conn latency 5981 le_minimum_ce_length, // min ce length 5982 le_maximum_ce_length // max ce length 5983 ); 5984 } else 5985 #endif 5986 { 5987 hci_send_cmd(&hci_le_create_connection, 5988 hci_stack->le_connection_scan_interval, // conn scan interval 5989 hci_stack->le_connection_scan_window, // conn scan windows 5990 initiator_filter_policy, // don't use whitelist 5991 address_type, // peer address type 5992 address, // peer bd addr 5993 hci_stack->le_connection_own_addr_type, // our addr type: 5994 hci_stack->le_connection_interval_min, // conn interval min 5995 hci_stack->le_connection_interval_max, // conn interval max 5996 hci_stack->le_connection_latency, // conn latency 5997 hci_stack->le_supervision_timeout, // conn latency 5998 hci_stack->le_minimum_ce_length, // min ce length 5999 hci_stack->le_maximum_ce_length // max ce length 6000 ); 6001 } 6002 } 6003 #endif 6004 6005 #ifdef ENABLE_LE_PERIPHERAL 6006 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6007 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6008 uint8_t operation = 0; 6009 if (pos == 0){ 6010 // first fragment or complete data 6011 operation |= 1; 6012 } 6013 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6014 // last fragment or complete data 6015 operation |= 2; 6016 } 6017 return operation; 6018 } 6019 #endif 6020 #endif 6021 6022 static bool hci_run_general_gap_le(void){ 6023 6024 btstack_linked_list_iterator_t lit; 6025 6026 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6027 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6028 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6029 hci_stack->le_resolvable_private_address_update_s = 0; 6030 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6031 return true; 6032 } 6033 #endif 6034 6035 // Phase 1: collect what to stop 6036 6037 #ifdef ENABLE_LE_CENTRAL 6038 bool scanning_stop = false; 6039 bool connecting_stop = false; 6040 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6041 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6042 bool periodic_sync_stop = false; 6043 #endif 6044 #endif 6045 #endif 6046 6047 #ifdef ENABLE_LE_PERIPHERAL 6048 bool advertising_stop = false; 6049 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6050 le_advertising_set_t * advertising_stop_set = NULL; 6051 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6052 bool periodic_advertising_stop = false; 6053 #endif 6054 #endif 6055 #endif 6056 6057 // check if own address changes 6058 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6059 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6060 6061 // check if whitelist needs modification 6062 bool whitelist_modification_pending = false; 6063 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6064 while (btstack_linked_list_iterator_has_next(&lit)){ 6065 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6066 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6067 whitelist_modification_pending = true; 6068 break; 6069 } 6070 } 6071 6072 // check if resolving list needs modification 6073 bool resolving_list_modification_pending = false; 6074 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6075 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6076 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6077 resolving_list_modification_pending = true; 6078 } 6079 #endif 6080 6081 #ifdef ENABLE_LE_CENTRAL 6082 6083 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6084 // check if periodic advertiser list needs modification 6085 bool periodic_list_modification_pending = false; 6086 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6087 while (btstack_linked_list_iterator_has_next(&lit)){ 6088 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6089 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6090 periodic_list_modification_pending = true; 6091 break; 6092 } 6093 } 6094 #endif 6095 6096 // scanning control 6097 if (hci_stack->le_scanning_active) { 6098 // stop if: 6099 // - parameter change required 6100 // - it's disabled 6101 // - whitelist change required but used for scanning 6102 // - resolving list modified 6103 // - own address changes 6104 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6105 if ((hci_stack->le_scanning_param_update) || 6106 !hci_stack->le_scanning_enabled || 6107 (scanning_uses_whitelist && whitelist_modification_pending) || 6108 resolving_list_modification_pending || 6109 random_address_change){ 6110 6111 scanning_stop = true; 6112 } 6113 } 6114 6115 // connecting control 6116 bool connecting_with_whitelist; 6117 switch (hci_stack->le_connecting_state){ 6118 case LE_CONNECTING_DIRECT: 6119 case LE_CONNECTING_WHITELIST: 6120 // stop connecting if: 6121 // - connecting uses white and whitelist modification pending 6122 // - if it got disabled 6123 // - resolving list modified 6124 // - own address changes 6125 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6126 if ((connecting_with_whitelist && whitelist_modification_pending) || 6127 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6128 resolving_list_modification_pending || 6129 random_address_change) { 6130 6131 connecting_stop = true; 6132 } 6133 break; 6134 default: 6135 break; 6136 } 6137 6138 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6139 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6140 // periodic sync control 6141 bool sync_with_advertiser_list; 6142 switch(hci_stack->le_periodic_sync_state){ 6143 case LE_CONNECTING_DIRECT: 6144 case LE_CONNECTING_WHITELIST: 6145 // stop sync if: 6146 // - sync with advertiser list and advertiser list modification pending 6147 // - if it got disabled 6148 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6149 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6150 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6151 periodic_sync_stop = true; 6152 } 6153 break; 6154 default: 6155 break; 6156 } 6157 #endif 6158 #endif 6159 6160 #endif /* ENABLE_LE_CENTRAL */ 6161 6162 #ifdef ENABLE_LE_PERIPHERAL 6163 // le advertisement control 6164 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6165 // stop if: 6166 // - parameter change required 6167 // - random address used in advertising and changes 6168 // - it's disabled 6169 // - whitelist change required but used for advertisement filter policy 6170 // - resolving list modified 6171 // - own address changes 6172 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6173 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6174 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6175 if (advertising_change || 6176 (advertising_uses_random_address && random_address_change) || 6177 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6178 (advertising_uses_whitelist && whitelist_modification_pending) || 6179 resolving_list_modification_pending || 6180 random_address_change) { 6181 6182 advertising_stop = true; 6183 } 6184 } 6185 6186 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6187 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6188 btstack_linked_list_iterator_t it; 6189 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6190 while (btstack_linked_list_iterator_has_next(&it)){ 6191 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6192 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6193 // stop if: 6194 // - parameter change required 6195 // - random address used in connectable advertising and changes 6196 // - it's disabled 6197 // - whitelist change required but used for advertisement filter policy 6198 // - resolving list modified 6199 // - own address changes 6200 // - advertisement set will be removed 6201 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6202 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6203 bool advertising_uses_random_address = 6204 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6205 advertising_connectable; 6206 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6207 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6208 bool advertising_set_random_address_change = 6209 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6210 bool advertising_set_will_be_removed = 6211 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6212 if (advertising_parameter_change || 6213 (advertising_uses_random_address && advertising_set_random_address_change) || 6214 (advertising_enabled == false) || 6215 (advertising_uses_whitelist && whitelist_modification_pending) || 6216 resolving_list_modification_pending || 6217 advertising_set_will_be_removed) { 6218 6219 advertising_stop = true; 6220 advertising_stop_set = advertising_set; 6221 break; 6222 } 6223 } 6224 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6225 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6226 // stop if: 6227 // - it's disabled 6228 // - parameter change required 6229 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6230 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6231 if ((periodic_enabled == false) || periodic_parameter_change){ 6232 periodic_advertising_stop = true; 6233 advertising_stop_set = advertising_set; 6234 } 6235 } 6236 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6237 } 6238 } 6239 #endif 6240 6241 #endif 6242 6243 6244 // Phase 2: stop everything that should be off during modifications 6245 6246 6247 // 2.1 Outgoing connection 6248 #ifdef ENABLE_LE_CENTRAL 6249 if (connecting_stop){ 6250 hci_send_cmd(&hci_le_create_connection_cancel); 6251 return true; 6252 } 6253 #endif 6254 6255 // 2.2 Scanning 6256 #ifdef ENABLE_LE_CENTRAL 6257 if (scanning_stop){ 6258 hci_stack->le_scanning_active = false; 6259 hci_le_scan_stop(); 6260 return true; 6261 } 6262 6263 // 2.3 Periodic Sync 6264 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6265 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6266 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6267 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6268 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6269 return true; 6270 } 6271 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6272 if (periodic_sync_stop){ 6273 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6274 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6275 return true; 6276 } 6277 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6278 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6279 #endif /* ENABLE_LE_CENTRAL */ 6280 6281 // 2.4 Advertising: legacy, extended, periodic 6282 #ifdef ENABLE_LE_PERIPHERAL 6283 if (advertising_stop){ 6284 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6285 if (hci_extended_advertising_supported()) { 6286 uint8_t advertising_stop_handle; 6287 if (advertising_stop_set != NULL){ 6288 advertising_stop_handle = advertising_stop_set->advertising_handle; 6289 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6290 } else { 6291 advertising_stop_handle = 0; 6292 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6293 } 6294 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6295 const uint16_t durations[] = { 0 }; 6296 const uint16_t max_events[] = { 0 }; 6297 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6298 } else 6299 #endif 6300 { 6301 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6302 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6303 } 6304 return true; 6305 } 6306 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6307 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6308 if (periodic_advertising_stop){ 6309 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6310 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6311 return true; 6312 } 6313 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6314 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6315 #endif /* ENABLE_LE_PERIPHERAL */ 6316 6317 6318 // Phase 3: modify 6319 6320 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6321 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6322 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6323 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6324 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6325 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6326 #endif 6327 return true; 6328 } 6329 6330 #ifdef ENABLE_LE_CENTRAL 6331 if (hci_stack->le_scanning_param_update){ 6332 hci_stack->le_scanning_param_update = false; 6333 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6334 if (hci_extended_advertising_supported()){ 6335 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6336 uint8_t scan_types[2]; 6337 uint16_t scan_intervals[2]; 6338 uint16_t scan_windows[2]; 6339 6340 uint8_t i; 6341 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6342 for (i=0;i<num_phys;i++){ 6343 scan_types[i] = hci_stack->le_scan_type; 6344 scan_intervals[i] = hci_stack->le_scan_interval; 6345 scan_windows[i] = hci_stack->le_scan_window; 6346 } 6347 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6348 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6349 } else 6350 #endif 6351 { 6352 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6353 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6354 } 6355 return true; 6356 } 6357 #endif 6358 6359 #ifdef ENABLE_LE_PERIPHERAL 6360 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6361 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6362 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6363 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6364 if (hci_extended_advertising_supported()){ 6365 // map advertisment type to advertising event properties 6366 uint16_t adv_event_properties = 0; 6367 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6368 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6369 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6370 } 6371 hci_stack->le_advertising_set_in_current_command = 0; 6372 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6373 0, 6374 adv_event_properties, 6375 hci_stack->le_advertisements_interval_min, 6376 hci_stack->le_advertisements_interval_max, 6377 hci_stack->le_advertisements_channel_map, 6378 hci_stack->le_advertisements_own_addr_type, 6379 hci_stack->le_advertisements_direct_address_type, 6380 hci_stack->le_advertisements_direct_address, 6381 hci_stack->le_advertisements_filter_policy, 6382 0x7f, // tx power: no preference 6383 0x01, // primary adv phy: LE 1M 6384 0, // secondary adv max skip 6385 0x01, // secondary adv phy 6386 0, // adv sid 6387 0 // scan request notification 6388 ); 6389 } else 6390 #endif 6391 { 6392 hci_send_cmd(&hci_le_set_advertising_parameters, 6393 hci_stack->le_advertisements_interval_min, 6394 hci_stack->le_advertisements_interval_max, 6395 hci_stack->le_advertisements_type, 6396 hci_stack->le_advertisements_own_addr_type, 6397 hci_stack->le_advertisements_direct_address_type, 6398 hci_stack->le_advertisements_direct_address, 6399 hci_stack->le_advertisements_channel_map, 6400 hci_stack->le_advertisements_filter_policy); 6401 } 6402 return true; 6403 } 6404 6405 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6406 // assumption: only set if extended advertising is supported 6407 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6408 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6409 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6410 return true; 6411 } 6412 #endif 6413 6414 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6415 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6416 uint8_t adv_data_clean[31]; 6417 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6418 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6419 hci_stack->le_advertisements_data_len); 6420 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6421 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6422 if (hci_extended_advertising_supported()){ 6423 hci_stack->le_advertising_set_in_current_command = 0; 6424 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6425 } else 6426 #endif 6427 { 6428 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6429 } 6430 return true; 6431 } 6432 6433 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6434 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6435 uint8_t scan_data_clean[31]; 6436 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6437 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6438 hci_stack->le_scan_response_data_len); 6439 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6440 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6441 if (hci_extended_advertising_supported()){ 6442 hci_stack->le_advertising_set_in_current_command = 0; 6443 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6444 } else 6445 #endif 6446 { 6447 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6448 } 6449 return true; 6450 } 6451 6452 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6453 if (hci_extended_advertising_supported()) { 6454 btstack_linked_list_iterator_t it; 6455 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6456 while (btstack_linked_list_iterator_has_next(&it)){ 6457 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6458 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6459 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6460 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6461 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6462 return true; 6463 } 6464 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6465 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6466 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6467 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6468 advertising_set->advertising_handle, 6469 advertising_set->extended_params.advertising_event_properties, 6470 advertising_set->extended_params.primary_advertising_interval_min, 6471 advertising_set->extended_params.primary_advertising_interval_max, 6472 advertising_set->extended_params.primary_advertising_channel_map, 6473 advertising_set->extended_params.own_address_type, 6474 advertising_set->extended_params.peer_address_type, 6475 advertising_set->extended_params.peer_address, 6476 advertising_set->extended_params.advertising_filter_policy, 6477 advertising_set->extended_params.advertising_tx_power, 6478 advertising_set->extended_params.primary_advertising_phy, 6479 advertising_set->extended_params.secondary_advertising_max_skip, 6480 advertising_set->extended_params.secondary_advertising_phy, 6481 advertising_set->extended_params.advertising_sid, 6482 advertising_set->extended_params.scan_request_notification_enable 6483 ); 6484 return true; 6485 } 6486 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6487 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6488 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6489 return true; 6490 } 6491 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6492 uint16_t pos = advertising_set->adv_data_pos; 6493 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6494 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6495 if ((operation & 0x02) != 0){ 6496 // last fragment or complete data 6497 operation |= 2; 6498 advertising_set->adv_data_pos = 0; 6499 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6500 } else { 6501 advertising_set->adv_data_pos += data_to_upload; 6502 } 6503 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6504 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6505 return true; 6506 } 6507 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6508 uint16_t pos = advertising_set->scan_data_pos; 6509 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6510 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6511 if ((operation & 0x02) != 0){ 6512 advertising_set->scan_data_pos = 0; 6513 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6514 } else { 6515 advertising_set->scan_data_pos += data_to_upload; 6516 } 6517 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6518 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6519 return true; 6520 } 6521 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6522 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6523 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6524 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6525 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6526 advertising_set->advertising_handle, 6527 advertising_set->periodic_params.periodic_advertising_interval_min, 6528 advertising_set->periodic_params.periodic_advertising_interval_max, 6529 advertising_set->periodic_params.periodic_advertising_properties); 6530 return true; 6531 } 6532 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6533 uint16_t pos = advertising_set->periodic_data_pos; 6534 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6535 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6536 if ((operation & 0x02) != 0){ 6537 // last fragment or complete data 6538 operation |= 2; 6539 advertising_set->periodic_data_pos = 0; 6540 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6541 } else { 6542 advertising_set->periodic_data_pos += data_to_upload; 6543 } 6544 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6545 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6546 return true; 6547 } 6548 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6549 } 6550 } 6551 #endif 6552 6553 #endif 6554 6555 #ifdef ENABLE_LE_CENTRAL 6556 // if connect with whitelist was active and is not cancelled yet, wait until next time 6557 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6558 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6559 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6560 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6561 #endif 6562 #endif 6563 6564 // LE Whitelist Management 6565 if (whitelist_modification_pending){ 6566 // add/remove entries 6567 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6568 while (btstack_linked_list_iterator_has_next(&lit)){ 6569 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6570 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6571 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6572 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6573 bd_addr_type_t address_type = entry->address_type; 6574 bd_addr_t address; 6575 memcpy(address, entry->address, 6); 6576 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6577 // remove from whitelist if not scheduled for re-addition 6578 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6579 btstack_memory_whitelist_entry_free(entry); 6580 } 6581 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6582 return true; 6583 } 6584 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6585 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6586 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6587 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6588 return true; 6589 } 6590 } 6591 } 6592 6593 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6594 // LE Resolving List Management 6595 if (resolving_list_supported) { 6596 uint16_t i; 6597 switch (hci_stack->le_resolving_list_state) { 6598 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6599 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6600 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6601 return true; 6602 case LE_RESOLVING_LIST_READ_SIZE: 6603 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6604 hci_send_cmd(&hci_le_read_resolving_list_size); 6605 return true; 6606 case LE_RESOLVING_LIST_SEND_CLEAR: 6607 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6608 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6609 sizeof(hci_stack->le_resolving_list_add_entries)); 6610 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6611 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6612 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6613 sizeof(hci_stack->le_resolving_list_remove_entries)); 6614 hci_send_cmd(&hci_le_clear_resolving_list); 6615 return true; 6616 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6617 // first remove old entries 6618 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6619 uint8_t offset = i >> 3; 6620 uint8_t mask = 1 << (i & 7); 6621 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6622 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6623 bd_addr_t peer_identity_addreses; 6624 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6625 sm_key_t peer_irk; 6626 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6627 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6628 6629 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6630 // trigger whitelist entry 'update' (work around for controller bug) 6631 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6632 while (btstack_linked_list_iterator_has_next(&lit)) { 6633 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6634 if (entry->address_type != peer_identity_addr_type) continue; 6635 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6636 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6637 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6638 } 6639 #endif 6640 6641 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6642 peer_identity_addreses); 6643 return true; 6644 } 6645 6646 // then add new entries 6647 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6648 uint8_t offset = i >> 3; 6649 uint8_t mask = 1 << (i & 7); 6650 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6651 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6652 bd_addr_t peer_identity_addreses; 6653 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6654 sm_key_t peer_irk; 6655 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6656 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6657 if (btstack_is_null(peer_irk, 16)) continue; 6658 const uint8_t *local_irk = gap_get_persistent_irk(); 6659 // command uses format specifier 'P' that stores 16-byte value without flip 6660 uint8_t local_irk_flipped[16]; 6661 uint8_t peer_irk_flipped[16]; 6662 reverse_128(local_irk, local_irk_flipped); 6663 reverse_128(peer_irk, peer_irk_flipped); 6664 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6665 peer_irk_flipped, local_irk_flipped); 6666 return true; 6667 } 6668 6669 // finally, set privacy mode 6670 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6671 uint8_t offset = i >> 3; 6672 uint8_t mask = 1 << (i & 7); 6673 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6674 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6675 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6676 // Network Privacy Mode is default 6677 continue; 6678 } 6679 bd_addr_t peer_identity_address; 6680 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6681 sm_key_t peer_irk; 6682 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6683 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6684 if (btstack_is_null(peer_irk, 16)) continue; 6685 // command uses format specifier 'P' that stores 16-byte value without flip 6686 uint8_t peer_irk_flipped[16]; 6687 reverse_128(peer_irk, peer_irk_flipped); 6688 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6689 return true; 6690 } 6691 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6692 break; 6693 6694 default: 6695 break; 6696 } 6697 } 6698 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6699 #endif 6700 6701 #ifdef ENABLE_LE_CENTRAL 6702 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6703 // LE Whitelist Management 6704 if (periodic_list_modification_pending){ 6705 // add/remove entries 6706 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6707 while (btstack_linked_list_iterator_has_next(&lit)){ 6708 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6709 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6710 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6711 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6712 return true; 6713 } 6714 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6715 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6716 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6717 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6718 return true; 6719 } 6720 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6721 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6722 btstack_memory_periodic_advertiser_list_entry_free(entry); 6723 } 6724 } 6725 } 6726 #endif 6727 #endif 6728 6729 #ifdef ENABLE_LE_CENTRAL 6730 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6731 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6732 if (hci_stack->le_past_set_default_params){ 6733 hci_stack->le_past_set_default_params = false; 6734 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6735 hci_stack->le_past_mode, 6736 hci_stack->le_past_skip, 6737 hci_stack->le_past_sync_timeout, 6738 hci_stack->le_past_cte_type); 6739 return true; 6740 } 6741 #endif 6742 #endif 6743 #endif 6744 6745 // post-pone all actions until stack is fully working 6746 if (hci_stack->state != HCI_STATE_WORKING) return false; 6747 6748 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6749 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6750 6751 // Phase 4: restore state 6752 6753 #ifdef ENABLE_LE_CENTRAL 6754 // re-start scanning 6755 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6756 hci_stack->le_scanning_active = true; 6757 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6758 if (hci_extended_advertising_supported()){ 6759 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6760 } else 6761 #endif 6762 { 6763 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6764 } 6765 return true; 6766 } 6767 #endif 6768 6769 #ifdef ENABLE_LE_CENTRAL 6770 // re-start connecting 6771 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6772 bd_addr_t null_addr; 6773 memset(null_addr, 0, 6); 6774 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6775 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6776 hci_send_le_create_connection(1, 0, null_addr); 6777 return true; 6778 } 6779 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6780 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6781 switch(hci_stack->le_periodic_sync_request){ 6782 case LE_CONNECTING_DIRECT: 6783 case LE_CONNECTING_WHITELIST: 6784 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6785 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6786 hci_stack->le_periodic_sync_options, 6787 hci_stack->le_periodic_sync_advertising_sid, 6788 hci_stack->le_periodic_sync_advertiser_address_type, 6789 hci_stack->le_periodic_sync_advertiser_address, 6790 hci_stack->le_periodic_sync_skip, 6791 hci_stack->le_periodic_sync_timeout, 6792 hci_stack->le_periodic_sync_cte_type); 6793 return true; 6794 default: 6795 break; 6796 } 6797 } 6798 #endif 6799 #endif 6800 6801 #ifdef ENABLE_LE_PERIPHERAL 6802 // re-start advertising 6803 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6804 // check if advertisements should be enabled given 6805 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6806 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6807 6808 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6809 if (hci_extended_advertising_supported()){ 6810 const uint8_t advertising_handles[] = { 0 }; 6811 const uint16_t durations[] = { 0 }; 6812 const uint16_t max_events[] = { 0 }; 6813 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6814 } else 6815 #endif 6816 { 6817 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6818 } 6819 return true; 6820 } 6821 6822 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6823 if (hci_extended_advertising_supported()) { 6824 btstack_linked_list_iterator_t it; 6825 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6826 while (btstack_linked_list_iterator_has_next(&it)) { 6827 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6828 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6829 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6830 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6831 const uint16_t durations[] = { advertising_set->enable_timeout }; 6832 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6833 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6834 return true; 6835 } 6836 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6837 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6838 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6839 uint8_t enable = 1; 6840 if (advertising_set->periodic_include_adi){ 6841 enable |= 2; 6842 } 6843 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6844 return true; 6845 } 6846 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6847 } 6848 } 6849 #endif 6850 #endif 6851 6852 return false; 6853 } 6854 6855 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6856 static bool hci_run_iso_tasks(void){ 6857 btstack_linked_list_iterator_t it; 6858 6859 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6860 return false; 6861 } 6862 6863 // BIG 6864 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6865 while (btstack_linked_list_iterator_has_next(&it)){ 6866 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6867 switch (big->state){ 6868 case LE_AUDIO_BIG_STATE_CREATE: 6869 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6870 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6871 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6872 hci_send_cmd(&hci_le_create_big, 6873 big->params->big_handle, 6874 big->params->advertising_handle, 6875 big->params->num_bis, 6876 big->params->sdu_interval_us, 6877 big->params->max_sdu, 6878 big->params->max_transport_latency_ms, 6879 big->params->rtn, 6880 big->params->phy, 6881 big->params->packing, 6882 big->params->framing, 6883 big->params->encryption, 6884 big->params->broadcast_code); 6885 return true; 6886 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6887 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6888 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); 6889 return true; 6890 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6891 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6892 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6893 return true; 6894 case LE_AUDIO_BIG_STATE_TERMINATE: 6895 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6896 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6897 return true; 6898 default: 6899 break; 6900 } 6901 } 6902 6903 // BIG Sync 6904 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6905 while (btstack_linked_list_iterator_has_next(&it)){ 6906 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6907 switch (big_sync->state){ 6908 case LE_AUDIO_BIG_STATE_CREATE: 6909 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6910 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6911 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6912 hci_send_cmd(&hci_le_big_create_sync, 6913 big_sync->params->big_handle, 6914 big_sync->params->sync_handle, 6915 big_sync->params->encryption, 6916 big_sync->params->broadcast_code, 6917 big_sync->params->mse, 6918 big_sync->params->big_sync_timeout_10ms, 6919 big_sync->params->num_bis, 6920 big_sync->params->bis_indices); 6921 return true; 6922 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6923 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6924 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); 6925 return true; 6926 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6927 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6928 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6929 return true; 6930 case LE_AUDIO_BIG_STATE_TERMINATE: 6931 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6932 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6933 return true; 6934 default: 6935 break; 6936 } 6937 } 6938 6939 // CIG 6940 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6941 while (btstack_linked_list_iterator_has_next(&it)) { 6942 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6943 uint8_t i; 6944 // Set CIG Parameters 6945 uint8_t cis_id[MAX_NR_CIS]; 6946 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6947 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6948 uint8_t phy_c_to_p[MAX_NR_CIS]; 6949 uint8_t phy_p_to_c[MAX_NR_CIS]; 6950 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6951 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6952 switch (cig->state) { 6953 case LE_AUDIO_CIG_STATE_CREATE: 6954 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6955 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6956 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6957 le_audio_cig_params_t * params = cig->params; 6958 for (i = 0; i < params->num_cis; i++) { 6959 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6960 cis_id[i] = cis_params->cis_id; 6961 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6962 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6963 phy_c_to_p[i] = cis_params->phy_c_to_p; 6964 phy_p_to_c[i] = cis_params->phy_p_to_c; 6965 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6966 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6967 } 6968 hci_send_cmd(&hci_le_set_cig_parameters, 6969 cig->cig_id, 6970 params->sdu_interval_c_to_p, 6971 params->sdu_interval_p_to_c, 6972 params->worst_case_sca, 6973 params->packing, 6974 params->framing, 6975 params->max_transport_latency_c_to_p, 6976 params->max_transport_latency_p_to_c, 6977 params->num_cis, 6978 cis_id, 6979 max_sdu_c_to_p, 6980 max_sdu_p_to_c, 6981 phy_c_to_p, 6982 phy_p_to_c, 6983 rtn_c_to_p, 6984 rtn_p_to_c 6985 ); 6986 return true; 6987 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6988 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6989 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6990 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6991 for (i=0;i<cig->num_cis;i++){ 6992 cig->cis_setup_active[i] = true; 6993 } 6994 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6995 return true; 6996 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6997 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6998 // find next path to setup 6999 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7000 if (cig->cis_established[cis_index] == false) { 7001 continue; 7002 } 7003 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7004 bool setup = true; 7005 if (cis_direction == 0){ 7006 // 0 - input - host to controller 7007 // we are central => central to peripheral 7008 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7009 } else { 7010 // 1 - output - controller to host 7011 // we are central => peripheral to central 7012 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7013 } 7014 if (setup){ 7015 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7016 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7017 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7018 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); 7019 return true; 7020 } 7021 cig->state_vars.next_cis++; 7022 } 7023 // emit done 7024 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7025 default: 7026 break; 7027 } 7028 } 7029 7030 // CIS Accept/Reject 7031 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7032 while (btstack_linked_list_iterator_has_next(&it)) { 7033 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7034 hci_con_handle_t con_handle; 7035 switch (iso_stream->state){ 7036 case HCI_ISO_STREAM_W2_ACCEPT: 7037 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7038 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7039 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7040 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7041 return true; 7042 case HCI_ISO_STREAM_W2_REJECT: 7043 con_handle = iso_stream->cis_handle; 7044 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7045 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7046 hci_iso_stream_finalize(iso_stream); 7047 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7048 return true; 7049 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7050 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7051 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7052 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7053 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); 7054 break; 7055 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7056 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7057 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7058 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7059 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); 7060 break; 7061 default: 7062 break; 7063 } 7064 } 7065 7066 return false; 7067 } 7068 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7069 #endif 7070 7071 static bool hci_run_general_pending_commands(void){ 7072 btstack_linked_item_t * it; 7073 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7074 hci_connection_t * connection = (hci_connection_t *) it; 7075 7076 switch(connection->state){ 7077 case SEND_CREATE_CONNECTION: 7078 switch(connection->address_type){ 7079 #ifdef ENABLE_CLASSIC 7080 case BD_ADDR_TYPE_ACL: 7081 log_info("sending hci_create_connection"); 7082 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7083 break; 7084 #endif 7085 default: 7086 #ifdef ENABLE_BLE 7087 #ifdef ENABLE_LE_CENTRAL 7088 log_info("sending hci_le_create_connection"); 7089 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7090 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7091 hci_send_le_create_connection(0, connection->address_type, connection->address); 7092 connection->state = SENT_CREATE_CONNECTION; 7093 #endif 7094 #endif 7095 break; 7096 } 7097 return true; 7098 7099 #ifdef ENABLE_CLASSIC 7100 case RECEIVED_CONNECTION_REQUEST: 7101 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7102 log_info("sending hci_accept_connection_request"); 7103 connection->state = ACCEPTED_CONNECTION_REQUEST; 7104 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7105 return true; 7106 } 7107 break; 7108 #endif 7109 case SEND_DISCONNECT: 7110 connection->state = SENT_DISCONNECT; 7111 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7112 return true; 7113 7114 default: 7115 break; 7116 } 7117 7118 // no further commands if connection is about to get shut down 7119 if (connection->state == SENT_DISCONNECT) continue; 7120 7121 #ifdef ENABLE_CLASSIC 7122 7123 // Handling link key request requires remote supported features 7124 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7125 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7126 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7127 7128 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7129 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7130 if (have_link_key && security_level_sufficient){ 7131 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7132 } else { 7133 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7134 } 7135 return true; 7136 } 7137 7138 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7139 log_info("denying to pin request"); 7140 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7141 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7142 return true; 7143 } 7144 7145 // security assessment requires remote features 7146 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7147 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7148 hci_ssp_assess_security_on_io_cap_request(connection); 7149 // 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 7150 } 7151 7152 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7153 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7154 // set authentication requirements: 7155 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7156 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7157 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7158 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7159 authreq |= 1; 7160 } 7161 bool bonding = hci_stack->bondable; 7162 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7163 // if we have received IO Cap Response, we're in responder role 7164 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7165 if (bonding && !remote_bonding){ 7166 log_info("Remote not bonding, dropping local flag"); 7167 bonding = false; 7168 } 7169 } 7170 if (bonding){ 7171 if (connection->bonding_flags & BONDING_DEDICATED){ 7172 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7173 } else { 7174 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7175 } 7176 } 7177 uint8_t have_oob_data = 0; 7178 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7179 if (connection->classic_oob_c_192 != NULL){ 7180 have_oob_data |= 1; 7181 } 7182 if (connection->classic_oob_c_256 != NULL){ 7183 have_oob_data |= 2; 7184 } 7185 #endif 7186 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7187 return true; 7188 } 7189 7190 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7191 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7192 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7193 return true; 7194 } 7195 7196 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7197 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7198 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7199 const uint8_t zero[16] = { 0 }; 7200 const uint8_t * r_192 = zero; 7201 const uint8_t * c_192 = zero; 7202 const uint8_t * r_256 = zero; 7203 const uint8_t * c_256 = zero; 7204 // verify P-256 OOB 7205 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7206 c_256 = connection->classic_oob_c_256; 7207 if (connection->classic_oob_r_256 != NULL) { 7208 r_256 = connection->classic_oob_r_256; 7209 } 7210 } 7211 // verify P-192 OOB 7212 if ((connection->classic_oob_c_192 != NULL)) { 7213 c_192 = connection->classic_oob_c_192; 7214 if (connection->classic_oob_r_192 != NULL) { 7215 r_192 = connection->classic_oob_r_192; 7216 } 7217 } 7218 7219 // assess security 7220 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7221 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7222 if (need_level_4 && !can_reach_level_4){ 7223 log_info("Level 4 required, but not possible -> abort"); 7224 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7225 // send oob negative reply 7226 c_256 = NULL; 7227 c_192 = NULL; 7228 } 7229 7230 // Reply 7231 if (c_256 != zero) { 7232 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7233 } else if (c_192 != zero){ 7234 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7235 } else { 7236 hci_stack->classic_oob_con_handle = connection->con_handle; 7237 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7238 } 7239 return true; 7240 } 7241 #endif 7242 7243 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7244 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7245 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7246 return true; 7247 } 7248 7249 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7250 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7251 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7252 return true; 7253 } 7254 7255 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7256 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7257 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7258 return true; 7259 } 7260 7261 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7262 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7263 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7264 connection->state = SENT_DISCONNECT; 7265 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7266 return true; 7267 } 7268 7269 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7270 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7271 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7272 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7273 return true; 7274 } 7275 7276 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7277 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7278 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7279 return true; 7280 } 7281 7282 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7283 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7284 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7285 return true; 7286 } 7287 7288 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7289 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7290 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7291 return true; 7292 } 7293 7294 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7295 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7296 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7297 return true; 7298 } 7299 7300 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7301 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7302 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7303 return true; 7304 } 7305 #endif 7306 7307 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7308 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7309 #ifdef ENABLE_CLASSIC 7310 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7311 #endif 7312 if (connection->state != SENT_DISCONNECT){ 7313 connection->state = SENT_DISCONNECT; 7314 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7315 return true; 7316 } 7317 } 7318 7319 #ifdef ENABLE_CLASSIC 7320 uint16_t sniff_min_interval; 7321 switch (connection->sniff_min_interval){ 7322 case 0: 7323 break; 7324 case 0xffff: 7325 connection->sniff_min_interval = 0; 7326 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7327 return true; 7328 default: 7329 sniff_min_interval = connection->sniff_min_interval; 7330 connection->sniff_min_interval = 0; 7331 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7332 return true; 7333 } 7334 7335 if (connection->sniff_subrating_max_latency != 0xffff){ 7336 uint16_t max_latency = connection->sniff_subrating_max_latency; 7337 connection->sniff_subrating_max_latency = 0; 7338 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7339 return true; 7340 } 7341 7342 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7343 uint8_t service_type = (uint8_t) connection->qos_service_type; 7344 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7345 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); 7346 return true; 7347 } 7348 7349 if (connection->request_role != HCI_ROLE_INVALID){ 7350 hci_role_t role = connection->request_role; 7351 connection->request_role = HCI_ROLE_INVALID; 7352 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7353 return true; 7354 } 7355 #endif 7356 7357 if (connection->gap_connection_tasks != 0){ 7358 #ifdef ENABLE_CLASSIC 7359 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7360 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7361 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7362 return true; 7363 } 7364 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7365 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7366 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7367 return true; 7368 } 7369 #endif 7370 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7371 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7372 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7373 return true; 7374 } 7375 #ifdef ENABLE_BLE 7376 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7377 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7378 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7379 return true; 7380 } 7381 #endif 7382 } 7383 7384 #ifdef ENABLE_BLE 7385 switch (connection->le_con_parameter_update_state){ 7386 // response to L2CAP CON PARAMETER UPDATE REQUEST 7387 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7388 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7389 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7390 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7391 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7392 return true; 7393 case CON_PARAMETER_UPDATE_REPLY: 7394 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7395 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7396 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7397 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7398 return true; 7399 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7400 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7401 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7402 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7403 return true; 7404 default: 7405 break; 7406 } 7407 if (connection->le_phy_update_all_phys != 0xffu){ 7408 uint8_t all_phys = connection->le_phy_update_all_phys; 7409 connection->le_phy_update_all_phys = 0xff; 7410 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); 7411 return true; 7412 } 7413 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7414 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7415 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7416 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7417 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7418 return true; 7419 } 7420 if (connection->le_past_advertising_handle != 0xff){ 7421 uint8_t advertising_handle = connection->le_past_advertising_handle; 7422 connection->le_past_advertising_handle = 0xff; 7423 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7424 return true; 7425 } 7426 #endif 7427 #endif 7428 } 7429 return false; 7430 } 7431 7432 static void hci_run(void){ 7433 7434 // stack state sub statemachines 7435 switch (hci_stack->state) { 7436 case HCI_STATE_INITIALIZING: 7437 hci_initializing_run(); 7438 break; 7439 case HCI_STATE_HALTING: 7440 hci_halting_run(); 7441 break; 7442 case HCI_STATE_FALLING_ASLEEP: 7443 hci_falling_asleep_run(); 7444 break; 7445 default: 7446 break; 7447 } 7448 7449 // allow to run after initialization to working transition 7450 if (hci_stack->state != HCI_STATE_WORKING){ 7451 return; 7452 } 7453 7454 bool done; 7455 7456 // send continuation fragments first, as they block the prepared packet buffer 7457 done = hci_run_acl_fragments(); 7458 if (done) return; 7459 7460 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7461 done = hci_run_iso_fragments(); 7462 if (done) return; 7463 #endif 7464 7465 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7466 // send host num completed packets next as they don't require num_cmd_packets > 0 7467 if (!hci_can_send_comand_packet_transport()) return; 7468 if (hci_stack->host_completed_packets){ 7469 hci_host_num_completed_packets(); 7470 return; 7471 } 7472 #endif 7473 7474 if (!hci_can_send_command_packet_now()) return; 7475 7476 // global/non-connection oriented commands 7477 7478 7479 #ifdef ENABLE_CLASSIC 7480 // general gap classic 7481 done = hci_run_general_gap_classic(); 7482 if (done) return; 7483 #endif 7484 7485 #ifdef ENABLE_BLE 7486 // general gap le 7487 done = hci_run_general_gap_le(); 7488 if (done) return; 7489 7490 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7491 // ISO related tasks, e.g. BIG create/terminate/sync 7492 done = hci_run_iso_tasks(); 7493 if (done) return; 7494 #endif 7495 #endif 7496 7497 // send pending HCI commands 7498 hci_run_general_pending_commands(); 7499 } 7500 7501 #ifdef ENABLE_CLASSIC 7502 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7503 // bits 6-9 are 'don't use' 7504 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7505 7506 // restrict packet types to local and remote supported 7507 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7508 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7509 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7510 } 7511 #endif 7512 7513 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7514 // house-keeping 7515 7516 #ifdef ENABLE_CLASSIC 7517 bd_addr_t addr; 7518 hci_connection_t * conn; 7519 #endif 7520 #ifdef ENABLE_LE_CENTRAL 7521 uint8_t initiator_filter_policy; 7522 #endif 7523 7524 uint16_t opcode = little_endian_read_16(packet, 0); 7525 switch (opcode) { 7526 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7527 hci_stack->loopback_mode = packet[3]; 7528 break; 7529 7530 #ifdef ENABLE_CLASSIC 7531 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7532 reverse_bd_addr(&packet[3], addr); 7533 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7534 7535 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7536 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7537 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7538 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7539 } 7540 7541 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7542 if (!conn) { 7543 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7544 if (!conn) { 7545 // notify client that alloc failed 7546 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7547 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7548 } 7549 conn->state = SEND_CREATE_CONNECTION; 7550 } 7551 7552 log_info("conn state %u", conn->state); 7553 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7554 switch (conn->state) { 7555 // if connection active exists 7556 case OPEN: 7557 // and OPEN, emit connection complete command 7558 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7559 // packet not sent to controller 7560 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7561 case RECEIVED_DISCONNECTION_COMPLETE: 7562 // create connection triggered in disconnect complete event, let's do it now 7563 break; 7564 case SEND_CREATE_CONNECTION: 7565 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7566 if (hci_classic_operation_active()){ 7567 return ERROR_CODE_SUCCESS; 7568 } 7569 #endif 7570 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7571 break; 7572 default: 7573 // otherwise, just ignore as it is already in the open process 7574 // packet not sent to controller 7575 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7576 } 7577 conn->state = SENT_CREATE_CONNECTION; 7578 7579 // track outgoing connection 7580 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7581 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7582 break; 7583 7584 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7585 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7586 if (conn == NULL) { 7587 // neither SCO nor ACL connection for con handle 7588 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7589 } else { 7590 uint16_t remote_supported_sco_packets; 7591 switch (conn->address_type){ 7592 case BD_ADDR_TYPE_ACL: 7593 // assert SCO connection does not exit 7594 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7595 return ERROR_CODE_COMMAND_DISALLOWED; 7596 } 7597 // cache remote sco packet types 7598 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7599 7600 // allocate connection struct 7601 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7602 HCI_ROLE_MASTER); 7603 if (!conn) { 7604 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7605 } 7606 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7607 break; 7608 case BD_ADDR_TYPE_SCO: 7609 // update of existing SCO connection 7610 break; 7611 default: 7612 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7613 } 7614 } 7615 7616 // conn refers to hci connection of type sco now 7617 7618 conn->state = SENT_CREATE_CONNECTION; 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 // setup_synchronous_connection? Voice setting at offset 22 7625 // TODO: compare to current setting if sco connection already active 7626 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 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, 18)); 7630 break; 7631 7632 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7633 // get SCO connection 7634 reverse_bd_addr(&packet[3], addr); 7635 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7636 if (conn == NULL){ 7637 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7638 } 7639 7640 conn->state = ACCEPTED_CONNECTION_REQUEST; 7641 7642 // track outgoing connection to handle command status with error 7643 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7644 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7645 7646 // accept_synchronous_connection? Voice setting at offset 18 7647 // TODO: compare to current setting if sco connection already active 7648 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7649 7650 // derive sco payload length from packet types 7651 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7652 break; 7653 #endif 7654 7655 #ifdef ENABLE_BLE 7656 #ifdef ENABLE_LE_CENTRAL 7657 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7658 // white list used? 7659 initiator_filter_policy = packet[7]; 7660 switch (initiator_filter_policy) { 7661 case 0: 7662 // whitelist not used 7663 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7664 break; 7665 case 1: 7666 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7667 break; 7668 default: 7669 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7670 break; 7671 } 7672 // track outgoing connection 7673 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7674 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7675 break; 7676 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7677 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7678 // white list used? 7679 initiator_filter_policy = packet[3]; 7680 switch (initiator_filter_policy) { 7681 case 0: 7682 // whitelist not used 7683 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7684 break; 7685 case 1: 7686 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7687 break; 7688 default: 7689 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7690 break; 7691 } 7692 // track outgoing connection 7693 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7694 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7695 break; 7696 #endif 7697 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7698 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7699 break; 7700 #endif 7701 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7702 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7703 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7704 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7705 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7706 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7707 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7708 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7709 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7710 case HCI_OPCODE_HCI_LE_READ_PHY: 7711 case HCI_OPCODE_HCI_LE_SET_PHY: 7712 // conection handle is first command parameter 7713 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7714 break; 7715 #endif 7716 #endif /* ENABLE_BLE */ 7717 default: 7718 break; 7719 } 7720 7721 hci_stack->num_cmd_packets--; 7722 7723 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7724 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7725 if (err != 0){ 7726 return ERROR_CODE_HARDWARE_FAILURE; 7727 } 7728 return ERROR_CODE_SUCCESS; 7729 } 7730 7731 // disconnect because of security block 7732 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7733 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7734 if (!connection) return; 7735 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7736 } 7737 7738 7739 // Configure Secure Simple Pairing 7740 7741 #ifdef ENABLE_CLASSIC 7742 7743 // enable will enable SSP during init 7744 void gap_ssp_set_enable(int enable){ 7745 hci_stack->ssp_enable = enable; 7746 } 7747 7748 static int hci_local_ssp_activated(void){ 7749 return gap_ssp_supported() && hci_stack->ssp_enable; 7750 } 7751 7752 // if set, BTstack will respond to io capability request using authentication requirement 7753 void gap_ssp_set_io_capability(int io_capability){ 7754 hci_stack->ssp_io_capability = io_capability; 7755 } 7756 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7757 hci_stack->ssp_authentication_requirement = authentication_requirement; 7758 } 7759 7760 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7761 void gap_ssp_set_auto_accept(int auto_accept){ 7762 hci_stack->ssp_auto_accept = auto_accept; 7763 } 7764 7765 void gap_secure_connections_enable(bool enable){ 7766 hci_stack->secure_connections_enable = enable; 7767 } 7768 bool gap_secure_connections_active(void){ 7769 return hci_stack->secure_connections_active; 7770 } 7771 7772 #endif 7773 7774 // va_list part of hci_send_cmd 7775 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7776 if (!hci_can_send_command_packet_now()){ 7777 log_error("hci_send_cmd called but cannot send packet now"); 7778 return ERROR_CODE_COMMAND_DISALLOWED; 7779 } 7780 7781 // for HCI INITIALIZATION 7782 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7783 hci_stack->last_cmd_opcode = cmd->opcode; 7784 7785 hci_reserve_packet_buffer(); 7786 uint8_t * packet = hci_stack->hci_packet_buffer; 7787 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7788 uint8_t status = hci_send_cmd_packet(packet, size); 7789 7790 // release packet buffer on error or for synchronous transport implementations 7791 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7792 hci_release_packet_buffer(); 7793 hci_emit_transport_packet_sent(); 7794 } 7795 7796 return status; 7797 } 7798 7799 /** 7800 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7801 */ 7802 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7803 va_list argptr; 7804 va_start(argptr, cmd); 7805 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7806 va_end(argptr); 7807 return status; 7808 } 7809 7810 // Create various non-HCI events. 7811 // TODO: generalize, use table similar to hci_create_command 7812 7813 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7814 // dump packet 7815 if (dump) { 7816 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7817 } 7818 7819 // dispatch to all event handlers 7820 btstack_linked_list_iterator_t it; 7821 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7822 while (btstack_linked_list_iterator_has_next(&it)){ 7823 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7824 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7825 } 7826 } 7827 7828 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7829 if (!hci_stack->acl_packet_handler) return; 7830 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7831 } 7832 7833 #ifdef ENABLE_CLASSIC 7834 static void hci_notify_if_sco_can_send_now(void){ 7835 // notify SCO sender if waiting 7836 if (!hci_stack->sco_waiting_for_can_send_now) return; 7837 if (hci_can_send_sco_packet_now()){ 7838 hci_stack->sco_waiting_for_can_send_now = 0; 7839 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7840 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7841 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7842 } 7843 } 7844 7845 // parsing end emitting has been merged to reduce code size 7846 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7847 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7848 7849 uint8_t * eir_data; 7850 ad_context_t context; 7851 const uint8_t * name; 7852 uint8_t name_len; 7853 7854 if (size < 3) return; 7855 7856 int event_type = hci_event_packet_get_type(packet); 7857 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7858 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7859 7860 switch (event_type){ 7861 case HCI_EVENT_INQUIRY_RESULT: 7862 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7863 if (size != (3 + (num_responses * 14))) return; 7864 break; 7865 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7866 if (size != 257) return; 7867 if (num_responses != 1) return; 7868 break; 7869 default: 7870 return; 7871 } 7872 7873 // event[1] is set at the end 7874 int i; 7875 for (i=0; i<num_responses;i++){ 7876 memset(event, 0, sizeof(event)); 7877 event[0] = GAP_EVENT_INQUIRY_RESULT; 7878 uint8_t event_size = 27; // if name is not set by EIR 7879 7880 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7881 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7882 (void)memcpy(&event[9], 7883 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7884 3); // class of device 7885 (void)memcpy(&event[12], 7886 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7887 2); // clock offset 7888 7889 switch (event_type){ 7890 case HCI_EVENT_INQUIRY_RESULT: 7891 // 14,15,16,17 = 0, size 18 7892 break; 7893 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7894 event[14] = 1; 7895 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7896 // 16,17 = 0, size 18 7897 break; 7898 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7899 event[14] = 1; 7900 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7901 // EIR packets only contain a single inquiry response 7902 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7903 name = NULL; 7904 // Iterate over EIR data 7905 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7906 uint8_t data_type = ad_iterator_get_data_type(&context); 7907 uint8_t data_size = ad_iterator_get_data_len(&context); 7908 const uint8_t * data = ad_iterator_get_data(&context); 7909 // Prefer Complete Local Name over Shortened Local Name 7910 switch (data_type){ 7911 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7912 if (name) continue; 7913 /* fall through */ 7914 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7915 name = data; 7916 name_len = data_size; 7917 break; 7918 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7919 if (data_size != 8) break; 7920 event[16] = 1; 7921 memcpy(&event[17], data, 8); 7922 break; 7923 default: 7924 break; 7925 } 7926 } 7927 if (name){ 7928 event[25] = 1; 7929 // truncate name if needed 7930 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7931 event[26] = len; 7932 (void)memcpy(&event[27], name, len); 7933 event_size += len; 7934 } 7935 break; 7936 default: 7937 return; 7938 } 7939 event[1] = event_size - 2; 7940 hci_emit_event(event, event_size, 1); 7941 } 7942 } 7943 #endif 7944 7945 void hci_emit_state(void){ 7946 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7947 uint8_t event[3]; 7948 event[0] = BTSTACK_EVENT_STATE; 7949 event[1] = sizeof(event) - 2u; 7950 event[2] = hci_stack->state; 7951 hci_emit_event(event, sizeof(event), 1); 7952 } 7953 7954 #ifdef ENABLE_CLASSIC 7955 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7956 uint8_t event[13]; 7957 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7958 event[1] = sizeof(event) - 2; 7959 event[2] = status; 7960 little_endian_store_16(event, 3, con_handle); 7961 reverse_bd_addr(address, &event[5]); 7962 event[11] = 1; // ACL connection 7963 event[12] = 0; // encryption disabled 7964 hci_emit_event(event, sizeof(event), 1); 7965 } 7966 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7967 if (disable_l2cap_timeouts) return; 7968 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7969 uint8_t event[4]; 7970 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7971 event[1] = sizeof(event) - 2; 7972 little_endian_store_16(event, 2, conn->con_handle); 7973 hci_emit_event(event, sizeof(event), 1); 7974 } 7975 #endif 7976 7977 #ifdef ENABLE_BLE 7978 #ifdef ENABLE_LE_CENTRAL 7979 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){ 7980 uint8_t hci_event[21]; 7981 hci_event[0] = HCI_EVENT_LE_META; 7982 hci_event[1] = sizeof(hci_event) - 2u; 7983 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7984 hci_event[3] = status; 7985 little_endian_store_16(hci_event, 4, con_handle); 7986 hci_event[6] = 0; // TODO: role 7987 hci_event[7] = address_type; 7988 reverse_bd_addr(address, &hci_event[8]); 7989 little_endian_store_16(hci_event, 14, 0); // interval 7990 little_endian_store_16(hci_event, 16, 0); // latency 7991 little_endian_store_16(hci_event, 18, 0); // supervision timeout 7992 hci_event[20] = 0; // master clock accuracy 7993 hci_emit_event(hci_event, sizeof(hci_event), 1); 7994 // emit GAP event, too 7995 uint8_t gap_event[36]; 7996 hci_create_gap_connection_complete_event(hci_event, gap_event); 7997 hci_emit_event(gap_event, sizeof(gap_event), 1); 7998 } 7999 #endif 8000 #endif 8001 8002 static void hci_emit_transport_packet_sent(void){ 8003 // notify upper stack that it might be possible to send again 8004 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8005 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8006 } 8007 8008 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8009 uint8_t event[6]; 8010 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8011 event[1] = sizeof(event) - 2u; 8012 event[2] = 0; // status = OK 8013 little_endian_store_16(event, 3, con_handle); 8014 event[5] = reason; 8015 hci_emit_event(event, sizeof(event), 1); 8016 } 8017 8018 static void hci_emit_nr_connections_changed(void){ 8019 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8020 uint8_t event[3]; 8021 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8022 event[1] = sizeof(event) - 2u; 8023 event[2] = nr_hci_connections(); 8024 hci_emit_event(event, sizeof(event), 1); 8025 } 8026 8027 static void hci_emit_hci_open_failed(void){ 8028 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8029 uint8_t event[2]; 8030 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8031 event[1] = sizeof(event) - 2u; 8032 hci_emit_event(event, sizeof(event), 1); 8033 } 8034 8035 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8036 log_info("hci_emit_dedicated_bonding_result %u ", status); 8037 uint8_t event[9]; 8038 int pos = 0; 8039 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8040 event[pos++] = sizeof(event) - 2u; 8041 event[pos++] = status; 8042 reverse_bd_addr(address, &event[pos]); 8043 hci_emit_event(event, sizeof(event), 1); 8044 } 8045 8046 8047 #ifdef ENABLE_CLASSIC 8048 8049 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8050 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8051 uint8_t event[5]; 8052 int pos = 0; 8053 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8054 event[pos++] = sizeof(event) - 2; 8055 little_endian_store_16(event, 2, con_handle); 8056 pos += 2; 8057 event[pos++] = level; 8058 hci_emit_event(event, sizeof(event), 1); 8059 } 8060 8061 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8062 if (!connection) return LEVEL_0; 8063 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8064 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8065 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8066 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8067 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8068 // LEVEL 4 always requires 128 bit encrytion key size 8069 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8070 security_level = LEVEL_3; 8071 } 8072 return security_level; 8073 } 8074 8075 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8076 uint8_t event[4]; 8077 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8078 event[1] = sizeof(event) - 2; 8079 event[2] = discoverable; 8080 event[3] = connectable; 8081 hci_emit_event(event, sizeof(event), 1); 8082 } 8083 8084 // query if remote side supports eSCO 8085 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8086 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8087 if (!connection) return false; 8088 return (connection->remote_supported_features[0] & 1) != 0; 8089 } 8090 8091 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8092 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8093 if (!connection) return 0; 8094 return connection->remote_supported_sco_packets; 8095 } 8096 8097 static bool hci_ssp_supported(hci_connection_t * connection){ 8098 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8099 return (connection->bonding_flags & mask) == mask; 8100 } 8101 8102 // query if remote side supports SSP 8103 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8104 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8105 if (!connection) return false; 8106 return hci_ssp_supported(connection) ? 1 : 0; 8107 } 8108 8109 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8110 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8111 } 8112 8113 /** 8114 * Check if remote supported features query has completed 8115 */ 8116 bool hci_remote_features_available(hci_con_handle_t handle){ 8117 hci_connection_t * connection = hci_connection_for_handle(handle); 8118 if (!connection) return false; 8119 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8120 } 8121 8122 /** 8123 * Trigger remote supported features query 8124 */ 8125 8126 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8127 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8128 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8129 } 8130 } 8131 8132 void hci_remote_features_query(hci_con_handle_t con_handle){ 8133 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8134 if (!connection) return; 8135 hci_trigger_remote_features_for_connection(connection); 8136 hci_run(); 8137 } 8138 8139 // GAP API 8140 /** 8141 * @bbrief enable/disable bonding. default is enabled 8142 * @praram enabled 8143 */ 8144 void gap_set_bondable_mode(int enable){ 8145 hci_stack->bondable = enable ? 1 : 0; 8146 } 8147 /** 8148 * @brief Get bondable mode. 8149 * @return 1 if bondable 8150 */ 8151 int gap_get_bondable_mode(void){ 8152 return hci_stack->bondable; 8153 } 8154 8155 /** 8156 * @brief map link keys to security levels 8157 */ 8158 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8159 switch (link_key_type){ 8160 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8161 return LEVEL_4; 8162 case COMBINATION_KEY: 8163 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8164 return LEVEL_3; 8165 default: 8166 return LEVEL_2; 8167 } 8168 } 8169 8170 /** 8171 * @brief map link keys to secure connection yes/no 8172 */ 8173 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8174 switch (link_key_type){ 8175 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8176 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8177 return true; 8178 default: 8179 return false; 8180 } 8181 } 8182 8183 /** 8184 * @brief map link keys to authenticated 8185 */ 8186 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8187 switch (link_key_type){ 8188 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8189 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8190 return true; 8191 default: 8192 return false; 8193 } 8194 } 8195 8196 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8197 log_info("gap_mitm_protection_required_for_security_level %u", level); 8198 return level > LEVEL_2; 8199 } 8200 8201 /** 8202 * @brief get current security level 8203 */ 8204 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8205 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8206 if (!connection) return LEVEL_0; 8207 return gap_security_level_for_connection(connection); 8208 } 8209 8210 /** 8211 * @brief request connection to device to 8212 * @result GAP_AUTHENTICATION_RESULT 8213 */ 8214 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8215 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8216 if (!connection){ 8217 hci_emit_security_level(con_handle, LEVEL_0); 8218 return; 8219 } 8220 8221 btstack_assert(hci_is_le_connection(connection) == false); 8222 8223 // 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) 8224 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8225 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8226 requested_level = LEVEL_4; 8227 } 8228 8229 gap_security_level_t current_level = gap_security_level(con_handle); 8230 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8231 requested_level, connection->requested_security_level, current_level); 8232 8233 // authentication active if authentication request was sent or planned level > 0 8234 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8235 if (authentication_active){ 8236 // authentication already active 8237 if (connection->requested_security_level < requested_level){ 8238 // increase requested level as new level is higher 8239 // TODO: handle re-authentication when done 8240 connection->requested_security_level = requested_level; 8241 } 8242 } else { 8243 // no request active, notify if security sufficient 8244 if (requested_level <= current_level){ 8245 hci_emit_security_level(con_handle, current_level); 8246 return; 8247 } 8248 8249 // store request 8250 connection->requested_security_level = requested_level; 8251 8252 // start to authenticate connection 8253 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8254 8255 // request remote features if not already active, also trigger hci_run 8256 hci_remote_features_query(con_handle); 8257 } 8258 } 8259 8260 /** 8261 * @brief start dedicated bonding with device. disconnect after bonding 8262 * @param device 8263 * @param request MITM protection 8264 * @result GAP_DEDICATED_BONDING_COMPLETE 8265 */ 8266 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8267 8268 // create connection state machine 8269 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8270 8271 if (!connection){ 8272 return BTSTACK_MEMORY_ALLOC_FAILED; 8273 } 8274 8275 // delete link key 8276 gap_drop_link_key_for_bd_addr(device); 8277 8278 // configure LEVEL_2/3, dedicated bonding 8279 connection->state = SEND_CREATE_CONNECTION; 8280 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8281 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8282 connection->bonding_flags = BONDING_DEDICATED; 8283 8284 hci_run(); 8285 8286 return 0; 8287 } 8288 8289 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8290 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8291 if (connection == NULL){ 8292 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8293 } 8294 if (defer){ 8295 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8296 } else { 8297 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8298 // trigger disconnect 8299 hci_run(); 8300 } 8301 return ERROR_CODE_SUCCESS; 8302 } 8303 8304 void gap_set_local_name(const char * local_name){ 8305 hci_stack->local_name = local_name; 8306 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8307 // also update EIR if not set by user 8308 if (hci_stack->eir_data == NULL){ 8309 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8310 } 8311 hci_run(); 8312 } 8313 #endif 8314 8315 8316 #ifdef ENABLE_BLE 8317 8318 #ifdef ENABLE_LE_CENTRAL 8319 void gap_start_scan(void){ 8320 hci_stack->le_scanning_enabled = true; 8321 hci_run(); 8322 } 8323 8324 void gap_stop_scan(void){ 8325 hci_stack->le_scanning_enabled = false; 8326 hci_run(); 8327 } 8328 8329 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8330 hci_stack->le_scan_type = scan_type; 8331 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8332 hci_stack->le_scan_interval = scan_interval; 8333 hci_stack->le_scan_window = scan_window; 8334 hci_stack->le_scanning_param_update = true; 8335 hci_run(); 8336 } 8337 8338 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8339 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8340 } 8341 8342 void gap_set_scan_duplicate_filter(bool enabled){ 8343 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8344 } 8345 8346 void gap_set_scan_phys(uint8_t phys){ 8347 // LE Coded and LE 1M PHY 8348 hci_stack->le_scan_phys = phys & 0x05; 8349 } 8350 8351 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8352 // disallow le connection if outgoing already active 8353 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8354 log_error("le connect already active"); 8355 return ERROR_CODE_COMMAND_DISALLOWED; 8356 } 8357 8358 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8359 if (conn == NULL) { 8360 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8361 if (conn == false){ 8362 // alloc failed 8363 log_info("gap_connect: failed to alloc hci_connection_t"); 8364 return BTSTACK_MEMORY_ALLOC_FAILED; 8365 } 8366 } else { 8367 switch (conn->state) { 8368 case RECEIVED_DISCONNECTION_COMPLETE: 8369 // connection was just disconnected, reset state and allow re-connect 8370 conn->role = HCI_ROLE_MASTER; 8371 break; 8372 default: 8373 return ERROR_CODE_COMMAND_DISALLOWED; 8374 } 8375 } 8376 8377 // set le connecting state 8378 if (hci_is_le_connection_type(addr_type)){ 8379 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8380 } 8381 8382 // trigger connect 8383 log_info("gap_connect: send create connection next"); 8384 conn->state = SEND_CREATE_CONNECTION; 8385 hci_run(); 8386 return ERROR_CODE_SUCCESS; 8387 } 8388 8389 // @assumption: only a single outgoing LE Connection exists 8390 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8391 btstack_linked_item_t *it; 8392 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8393 hci_connection_t * conn = (hci_connection_t *) it; 8394 if (hci_is_le_connection(conn)){ 8395 switch (conn->state){ 8396 case SEND_CREATE_CONNECTION: 8397 case SENT_CREATE_CONNECTION: 8398 return conn; 8399 default: 8400 break; 8401 }; 8402 } 8403 } 8404 return NULL; 8405 } 8406 8407 uint8_t gap_connect_cancel(void){ 8408 hci_connection_t * conn; 8409 switch (hci_stack->le_connecting_request){ 8410 case LE_CONNECTING_IDLE: 8411 break; 8412 case LE_CONNECTING_WHITELIST: 8413 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8414 hci_run(); 8415 break; 8416 case LE_CONNECTING_DIRECT: 8417 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8418 conn = gap_get_outgoing_le_connection(); 8419 if (conn == NULL){ 8420 hci_run(); 8421 } else { 8422 switch (conn->state){ 8423 case SEND_CREATE_CONNECTION: 8424 // skip sending create connection and emit event instead 8425 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8426 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8427 btstack_memory_hci_connection_free( conn ); 8428 break; 8429 case SENT_CREATE_CONNECTION: 8430 // let hci_run_general_gap_le cancel outgoing connection 8431 hci_run(); 8432 break; 8433 default: 8434 break; 8435 } 8436 } 8437 break; 8438 default: 8439 btstack_unreachable(); 8440 break; 8441 } 8442 return ERROR_CODE_SUCCESS; 8443 } 8444 8445 /** 8446 * @brief Set connection parameters for outgoing connections 8447 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8448 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8449 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8450 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8451 * @param conn_latency, default: 4 8452 * @param supervision_timeout (unit: 10ms), default: 720 ms 8453 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8454 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8455 */ 8456 8457 void gap_set_connection_phys(uint8_t phys){ 8458 // LE Coded, LE 1M, LE 2M PHY 8459 hci_stack->le_connection_phys = phys & 7; 8460 } 8461 8462 #endif 8463 8464 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8465 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8466 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8467 hci_stack->le_connection_scan_interval = conn_scan_interval; 8468 hci_stack->le_connection_scan_window = conn_scan_window; 8469 hci_stack->le_connection_interval_min = conn_interval_min; 8470 hci_stack->le_connection_interval_max = conn_interval_max; 8471 hci_stack->le_connection_latency = conn_latency; 8472 hci_stack->le_supervision_timeout = supervision_timeout; 8473 hci_stack->le_minimum_ce_length = min_ce_length; 8474 hci_stack->le_maximum_ce_length = max_ce_length; 8475 } 8476 8477 /** 8478 * @brief Updates the connection parameters for a given LE connection 8479 * @param handle 8480 * @param conn_interval_min (unit: 1.25ms) 8481 * @param conn_interval_max (unit: 1.25ms) 8482 * @param conn_latency 8483 * @param supervision_timeout (unit: 10ms) 8484 * @return 0 if ok 8485 */ 8486 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8487 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8488 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8489 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8490 connection->le_conn_interval_min = conn_interval_min; 8491 connection->le_conn_interval_max = conn_interval_max; 8492 connection->le_conn_latency = conn_latency; 8493 connection->le_supervision_timeout = supervision_timeout; 8494 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8495 hci_run(); 8496 return 0; 8497 } 8498 8499 /** 8500 * @brief Request an update of the connection parameter for a given LE connection 8501 * @param handle 8502 * @param conn_interval_min (unit: 1.25ms) 8503 * @param conn_interval_max (unit: 1.25ms) 8504 * @param conn_latency 8505 * @param supervision_timeout (unit: 10ms) 8506 * @return 0 if ok 8507 */ 8508 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8509 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8510 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8511 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8512 connection->le_conn_interval_min = conn_interval_min; 8513 connection->le_conn_interval_max = conn_interval_max; 8514 connection->le_conn_latency = conn_latency; 8515 connection->le_supervision_timeout = supervision_timeout; 8516 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8517 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8518 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8519 return 0; 8520 } 8521 8522 #ifdef ENABLE_LE_PERIPHERAL 8523 8524 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8525 static void hci_assert_advertisement_set_0_ready(void){ 8526 // force advertising set creation for legacy LE Advertising 8527 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8528 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8529 } 8530 } 8531 #endif 8532 8533 /** 8534 * @brief Set Advertisement Data 8535 * @param advertising_data_length 8536 * @param advertising_data (max 31 octets) 8537 * @note data is not copied, pointer has to stay valid 8538 */ 8539 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8540 hci_stack->le_advertisements_data_len = advertising_data_length; 8541 hci_stack->le_advertisements_data = advertising_data; 8542 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8543 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8544 hci_assert_advertisement_set_0_ready(); 8545 #endif 8546 hci_run(); 8547 } 8548 8549 /** 8550 * @brief Set Scan Response Data 8551 * @param advertising_data_length 8552 * @param advertising_data (max 31 octets) 8553 * @note data is not copied, pointer has to stay valid 8554 */ 8555 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8556 hci_stack->le_scan_response_data_len = scan_response_data_length; 8557 hci_stack->le_scan_response_data = scan_response_data; 8558 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8559 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8560 hci_assert_advertisement_set_0_ready(); 8561 #endif 8562 hci_run(); 8563 } 8564 8565 /** 8566 * @brief Set Advertisement Parameters 8567 * @param adv_int_min 8568 * @param adv_int_max 8569 * @param adv_type 8570 * @param direct_address_type 8571 * @param direct_address 8572 * @param channel_map 8573 * @param filter_policy 8574 * 8575 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8576 */ 8577 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8578 uint8_t direct_address_typ, bd_addr_t direct_address, 8579 uint8_t channel_map, uint8_t filter_policy) { 8580 8581 hci_stack->le_advertisements_interval_min = adv_int_min; 8582 hci_stack->le_advertisements_interval_max = adv_int_max; 8583 hci_stack->le_advertisements_type = adv_type; 8584 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8585 hci_stack->le_advertisements_channel_map = channel_map; 8586 hci_stack->le_advertisements_filter_policy = filter_policy; 8587 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8588 6); 8589 8590 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8591 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8592 hci_run(); 8593 } 8594 8595 /** 8596 * @brief Enable/Disable Advertisements 8597 * @param enabled 8598 */ 8599 void gap_advertisements_enable(int enabled){ 8600 if (enabled == 0){ 8601 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8602 } else { 8603 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8604 } 8605 hci_update_advertisements_enabled_for_current_roles(); 8606 hci_run(); 8607 } 8608 8609 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8610 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8611 btstack_linked_list_iterator_t it; 8612 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8613 while (btstack_linked_list_iterator_has_next(&it)){ 8614 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8615 if ( item->advertising_handle == advertising_handle ) { 8616 return item; 8617 } 8618 } 8619 return NULL; 8620 } 8621 8622 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8623 hci_stack->le_resolvable_private_address_update_s = update_s; 8624 hci_run(); 8625 return ERROR_CODE_SUCCESS; 8626 } 8627 8628 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8629 // find free advertisement handle 8630 uint8_t advertisement_handle; 8631 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8632 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8633 } 8634 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8635 // clear 8636 memset(storage, 0, sizeof(le_advertising_set_t)); 8637 // copy params 8638 storage->advertising_handle = advertisement_handle; 8639 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8640 // add to list 8641 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8642 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8643 *out_advertising_handle = advertisement_handle; 8644 // set tasks and start 8645 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8646 hci_run(); 8647 return ERROR_CODE_SUCCESS; 8648 } 8649 8650 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8651 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8652 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8653 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8654 // set tasks and start 8655 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8656 hci_run(); 8657 return ERROR_CODE_SUCCESS; 8658 } 8659 8660 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8661 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8662 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8663 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8664 return ERROR_CODE_SUCCESS; 8665 } 8666 8667 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8668 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8669 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8670 memcpy(advertising_set->random_address, random_address, 6); 8671 // set tasks and start 8672 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8673 hci_run(); 8674 return ERROR_CODE_SUCCESS; 8675 } 8676 8677 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8678 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8679 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8680 advertising_set->adv_data = advertising_data; 8681 advertising_set->adv_data_len = advertising_data_length; 8682 // set tasks and start 8683 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8684 hci_run(); 8685 return ERROR_CODE_SUCCESS; 8686 } 8687 8688 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){ 8689 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8690 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8691 advertising_set->scan_data = scan_response_data; 8692 advertising_set->scan_data_len = scan_response_data_length; 8693 // set tasks and start 8694 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8695 hci_run(); 8696 return ERROR_CODE_SUCCESS; 8697 } 8698 8699 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8700 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8701 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8702 advertising_set->enable_timeout = timeout; 8703 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8704 // set tasks and start 8705 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8706 hci_run(); 8707 return ERROR_CODE_SUCCESS; 8708 } 8709 8710 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8711 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8712 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8713 // set tasks and start 8714 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8715 hci_run(); 8716 return ERROR_CODE_SUCCESS; 8717 } 8718 8719 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8720 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8721 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8722 // set tasks and start 8723 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8724 hci_run(); 8725 return ERROR_CODE_SUCCESS; 8726 } 8727 8728 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8729 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8730 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8731 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8732 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8733 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8734 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8735 // set tasks and start 8736 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8737 hci_run(); 8738 return ERROR_CODE_SUCCESS; 8739 } 8740 8741 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8742 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8743 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8744 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8745 return ERROR_CODE_SUCCESS; 8746 } 8747 8748 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8749 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8750 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8751 advertising_set->periodic_data = periodic_data; 8752 advertising_set->periodic_data_len = periodic_data_length; 8753 // set tasks and start 8754 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8755 hci_run(); 8756 return ERROR_CODE_SUCCESS; 8757 } 8758 8759 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8760 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8761 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8762 // set tasks and start 8763 advertising_set->periodic_include_adi = include_adi; 8764 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8765 hci_run(); 8766 return ERROR_CODE_SUCCESS; 8767 } 8768 8769 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8770 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8771 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8772 // set tasks and start 8773 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8774 hci_run(); 8775 return ERROR_CODE_SUCCESS; 8776 } 8777 8778 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8779 hci_stack->le_past_mode = mode; 8780 hci_stack->le_past_skip = skip; 8781 hci_stack->le_past_sync_timeout = sync_timeout; 8782 hci_stack->le_past_cte_type = cte_type; 8783 hci_stack->le_past_set_default_params = true; 8784 hci_run(); 8785 return ERROR_CODE_SUCCESS; 8786 } 8787 8788 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8789 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8790 if (hci_connection == NULL){ 8791 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8792 } 8793 hci_connection->le_past_sync_handle = sync_handle; 8794 hci_connection->le_past_service_data = service_data; 8795 hci_run(); 8796 return ERROR_CODE_SUCCESS; 8797 } 8798 8799 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8800 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8801 if (hci_connection == NULL){ 8802 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8803 } 8804 hci_connection->le_past_advertising_handle = advertising_handle; 8805 hci_connection->le_past_service_data = service_data; 8806 hci_run(); 8807 return ERROR_CODE_SUCCESS; 8808 } 8809 8810 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8811 8812 #endif 8813 8814 #endif 8815 8816 void hci_le_set_own_address_type(uint8_t own_address_type){ 8817 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8818 if (own_address_type == hci_stack->le_own_addr_type) return; 8819 hci_stack->le_own_addr_type = own_address_type; 8820 8821 #ifdef ENABLE_LE_PERIPHERAL 8822 // update advertisement parameters, too 8823 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8824 hci_run(); 8825 #endif 8826 #ifdef ENABLE_LE_CENTRAL 8827 // note: we don't update scan parameters or modify ongoing connection attempts 8828 #endif 8829 } 8830 8831 void hci_le_random_address_set(const bd_addr_t random_address){ 8832 memcpy(hci_stack->le_random_address, random_address, 6); 8833 hci_stack->le_random_address_set = true; 8834 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8835 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8836 if (hci_extended_advertising_supported()){ 8837 hci_assert_advertisement_set_0_ready(); 8838 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8839 } 8840 #endif 8841 hci_run(); 8842 } 8843 8844 #endif 8845 8846 uint8_t gap_disconnect(hci_con_handle_t handle){ 8847 hci_connection_t * conn = hci_connection_for_handle(handle); 8848 if (!conn){ 8849 hci_emit_disconnection_complete(handle, 0); 8850 return 0; 8851 } 8852 // ignore if already disconnected 8853 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8854 return 0; 8855 } 8856 conn->state = SEND_DISCONNECT; 8857 hci_run(); 8858 return 0; 8859 } 8860 8861 int gap_read_rssi(hci_con_handle_t con_handle){ 8862 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8863 if (hci_connection == NULL) return 0; 8864 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8865 hci_run(); 8866 return 1; 8867 } 8868 8869 /** 8870 * @brief Get connection type 8871 * @param con_handle 8872 * @result connection_type 8873 */ 8874 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8875 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8876 if (!conn) return GAP_CONNECTION_INVALID; 8877 switch (conn->address_type){ 8878 case BD_ADDR_TYPE_LE_PUBLIC: 8879 case BD_ADDR_TYPE_LE_RANDOM: 8880 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8881 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8882 return GAP_CONNECTION_LE; 8883 case BD_ADDR_TYPE_SCO: 8884 return GAP_CONNECTION_SCO; 8885 case BD_ADDR_TYPE_ACL: 8886 return GAP_CONNECTION_ACL; 8887 default: 8888 return GAP_CONNECTION_INVALID; 8889 } 8890 } 8891 8892 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8893 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8894 if (!conn) return HCI_ROLE_INVALID; 8895 return (hci_role_t) conn->role; 8896 } 8897 8898 8899 #ifdef ENABLE_CLASSIC 8900 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8901 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8902 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8903 conn->request_role = role; 8904 hci_run(); 8905 return ERROR_CODE_SUCCESS; 8906 } 8907 #endif 8908 8909 #ifdef ENABLE_BLE 8910 8911 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){ 8912 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8913 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8914 8915 conn->le_phy_update_all_phys = all_phys; 8916 conn->le_phy_update_tx_phys = tx_phys; 8917 conn->le_phy_update_rx_phys = rx_phys; 8918 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8919 8920 hci_run(); 8921 8922 return 0; 8923 } 8924 8925 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8926 8927 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 8928 // incorrect configuration: 8929 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 8930 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 8931 btstack_assert(false); 8932 #endif 8933 8934 // check if already in list 8935 btstack_linked_list_iterator_t it; 8936 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8937 while (btstack_linked_list_iterator_has_next(&it)) { 8938 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8939 if (entry->address_type != address_type) { 8940 continue; 8941 } 8942 if (memcmp(entry->address, address, 6) != 0) { 8943 continue; 8944 } 8945 8946 // if already on controller: 8947 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8948 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8949 // drop remove request 8950 entry->state = LE_WHITELIST_ON_CONTROLLER; 8951 return ERROR_CODE_SUCCESS; 8952 } else { 8953 // disallow as already on controller 8954 return ERROR_CODE_COMMAND_DISALLOWED; 8955 } 8956 } 8957 8958 // assume scheduled to add 8959 return ERROR_CODE_COMMAND_DISALLOWED; 8960 } 8961 8962 // alloc and add to list 8963 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8964 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8965 entry->address_type = address_type; 8966 (void)memcpy(entry->address, address, 6); 8967 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8968 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8969 return ERROR_CODE_SUCCESS; 8970 } 8971 8972 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8973 btstack_linked_list_iterator_t it; 8974 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8975 while (btstack_linked_list_iterator_has_next(&it)){ 8976 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8977 if (entry->address_type != address_type) { 8978 continue; 8979 } 8980 if (memcmp(entry->address, address, 6) != 0) { 8981 continue; 8982 } 8983 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8984 // remove from controller if already present 8985 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8986 } else { 8987 // directly remove entry from whitelist 8988 btstack_linked_list_iterator_remove(&it); 8989 btstack_memory_whitelist_entry_free(entry); 8990 } 8991 return ERROR_CODE_SUCCESS; 8992 } 8993 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8994 } 8995 8996 static void hci_whitelist_clear(void){ 8997 btstack_linked_list_iterator_t it; 8998 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8999 while (btstack_linked_list_iterator_has_next(&it)){ 9000 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9001 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9002 // remove from controller if already present 9003 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9004 continue; 9005 } 9006 // directly remove entry from whitelist 9007 btstack_linked_list_iterator_remove(&it); 9008 btstack_memory_whitelist_entry_free(entry); 9009 } 9010 } 9011 9012 /** 9013 * @brief Clear Whitelist 9014 * @return 0 if ok 9015 */ 9016 uint8_t gap_whitelist_clear(void){ 9017 hci_whitelist_clear(); 9018 hci_run(); 9019 return ERROR_CODE_SUCCESS; 9020 } 9021 9022 /** 9023 * @brief Add Device to Whitelist 9024 * @param address_typ 9025 * @param address 9026 * @return 0 if ok 9027 */ 9028 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9029 uint8_t status = hci_whitelist_add(address_type, address); 9030 if (status){ 9031 return status; 9032 } 9033 hci_run(); 9034 return ERROR_CODE_SUCCESS; 9035 } 9036 9037 /** 9038 * @brief Remove Device from Whitelist 9039 * @param address_typ 9040 * @param address 9041 * @return 0 if ok 9042 */ 9043 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9044 uint8_t status = hci_whitelist_remove(address_type, address); 9045 if (status){ 9046 return status; 9047 } 9048 hci_run(); 9049 return ERROR_CODE_SUCCESS; 9050 } 9051 9052 #ifdef ENABLE_LE_CENTRAL 9053 /** 9054 * @brief Connect with Whitelist 9055 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9056 * @return - if ok 9057 */ 9058 uint8_t gap_connect_with_whitelist(void){ 9059 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9060 return ERROR_CODE_COMMAND_DISALLOWED; 9061 } 9062 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9063 hci_run(); 9064 return ERROR_CODE_SUCCESS; 9065 } 9066 9067 /** 9068 * @brief Auto Connection Establishment - Start Connecting to device 9069 * @param address_typ 9070 * @param address 9071 * @return 0 if ok 9072 */ 9073 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9074 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9075 return ERROR_CODE_COMMAND_DISALLOWED; 9076 } 9077 9078 uint8_t status = hci_whitelist_add(address_type, address); 9079 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9080 return status; 9081 } 9082 9083 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9084 9085 hci_run(); 9086 return ERROR_CODE_SUCCESS; 9087 } 9088 9089 /** 9090 * @brief Auto Connection Establishment - Stop Connecting to device 9091 * @param address_typ 9092 * @param address 9093 * @return 0 if ok 9094 */ 9095 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9096 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9097 return ERROR_CODE_COMMAND_DISALLOWED; 9098 } 9099 9100 hci_whitelist_remove(address_type, address); 9101 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9102 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9103 } 9104 hci_run(); 9105 return 0; 9106 } 9107 9108 /** 9109 * @brief Auto Connection Establishment - Stop everything 9110 * @note Convenience function to stop all active auto connection attempts 9111 */ 9112 uint8_t gap_auto_connection_stop_all(void){ 9113 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9114 return ERROR_CODE_COMMAND_DISALLOWED; 9115 } 9116 hci_whitelist_clear(); 9117 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9118 hci_run(); 9119 return ERROR_CODE_SUCCESS; 9120 } 9121 9122 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9123 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9124 if (!conn) return 0; 9125 return conn->le_connection_interval; 9126 } 9127 #endif 9128 #endif 9129 9130 #ifdef ENABLE_CLASSIC 9131 /** 9132 * @brief Set Extended Inquiry Response data 9133 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9134 * @note has to be done before stack starts up 9135 */ 9136 void gap_set_extended_inquiry_response(const uint8_t * data){ 9137 hci_stack->eir_data = data; 9138 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9139 hci_run(); 9140 } 9141 9142 /** 9143 * @brief Start GAP Classic Inquiry 9144 * @param duration in 1.28s units 9145 * @return 0 if ok 9146 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9147 */ 9148 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9149 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9150 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9151 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9152 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9153 } 9154 hci_stack->inquiry_state = duration_in_1280ms_units; 9155 hci_stack->inquiry_max_period_length = 0; 9156 hci_stack->inquiry_min_period_length = 0; 9157 hci_run(); 9158 return 0; 9159 } 9160 9161 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9162 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9163 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9164 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9165 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9166 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9167 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9168 9169 hci_stack->inquiry_state = duration; 9170 hci_stack->inquiry_max_period_length = max_period_length; 9171 hci_stack->inquiry_min_period_length = min_period_length; 9172 hci_run(); 9173 return 0; 9174 } 9175 9176 /** 9177 * @brief Stop GAP Classic Inquiry 9178 * @return 0 if ok 9179 */ 9180 int gap_inquiry_stop(void){ 9181 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9182 // emit inquiry complete event, before it even started 9183 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9184 hci_emit_event(event, sizeof(event), 1); 9185 return 0; 9186 } 9187 switch (hci_stack->inquiry_state){ 9188 case GAP_INQUIRY_STATE_ACTIVE: 9189 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9190 hci_run(); 9191 return ERROR_CODE_SUCCESS; 9192 case GAP_INQUIRY_STATE_PERIODIC: 9193 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9194 hci_run(); 9195 return ERROR_CODE_SUCCESS; 9196 default: 9197 return ERROR_CODE_COMMAND_DISALLOWED; 9198 } 9199 } 9200 9201 void gap_inquiry_set_lap(uint32_t lap){ 9202 hci_stack->inquiry_lap = lap; 9203 } 9204 9205 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9206 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9207 hci_stack->inquiry_scan_window = inquiry_scan_window; 9208 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9209 hci_run(); 9210 } 9211 9212 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9213 { 9214 hci_stack->inquiry_tx_power_level = tx_power; 9215 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9216 hci_run(); 9217 } 9218 9219 9220 /** 9221 * @brief Remote Name Request 9222 * @param addr 9223 * @param page_scan_repetition_mode 9224 * @param clock_offset only used when bit 15 is set 9225 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9226 */ 9227 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9228 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9229 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9230 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9231 hci_stack->remote_name_clock_offset = clock_offset; 9232 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9233 hci_run(); 9234 return 0; 9235 } 9236 9237 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9238 hci_stack->gap_pairing_state = state; 9239 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9240 hci_run(); 9241 return 0; 9242 } 9243 9244 /** 9245 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9246 * @param addr 9247 * @param pin_data 9248 * @param pin_len 9249 * @return 0 if ok 9250 */ 9251 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9252 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9253 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9254 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9255 hci_stack->gap_pairing_pin_len = pin_len; 9256 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9257 } 9258 9259 /** 9260 * @brief Legacy Pairing Pin Code Response 9261 * @param addr 9262 * @param pin 9263 * @return 0 if ok 9264 */ 9265 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9266 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9267 } 9268 9269 /** 9270 * @brief Abort Legacy Pairing 9271 * @param addr 9272 * @param pin 9273 * @return 0 if ok 9274 */ 9275 int gap_pin_code_negative(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_PIN_NEGATIVE); 9278 } 9279 9280 /** 9281 * @brief SSP Passkey Response 9282 * @param addr 9283 * @param passkey 9284 * @return 0 if ok 9285 */ 9286 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9287 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9288 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9289 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9290 } 9291 9292 /** 9293 * @brief Abort SSP Passkey Entry/Pairing 9294 * @param addr 9295 * @param pin 9296 * @return 0 if ok 9297 */ 9298 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9299 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9300 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9301 } 9302 9303 /** 9304 * @brief Accept SSP Numeric Comparison 9305 * @param addr 9306 * @param passkey 9307 * @return 0 if ok 9308 */ 9309 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9310 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9311 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9312 } 9313 9314 /** 9315 * @brief Abort SSP Numeric Comparison/Pairing 9316 * @param addr 9317 * @param pin 9318 * @return 0 if ok 9319 */ 9320 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9321 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9322 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9323 } 9324 9325 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9326 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9327 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9328 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9329 connectionSetAuthenticationFlags(conn, flag); 9330 hci_run(); 9331 return ERROR_CODE_SUCCESS; 9332 } 9333 #endif 9334 9335 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9336 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9337 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9338 } 9339 9340 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9341 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9342 } 9343 #endif 9344 9345 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9346 /** 9347 * @brief Report Remote OOB Data 9348 * @param bd_addr 9349 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9350 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9351 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9352 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9353 */ 9354 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){ 9355 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9356 if (connection == NULL) { 9357 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9358 } 9359 connection->classic_oob_c_192 = c_192; 9360 connection->classic_oob_r_192 = r_192; 9361 9362 // ignore P-256 if not supported by us 9363 if (hci_stack->secure_connections_active){ 9364 connection->classic_oob_c_256 = c_256; 9365 connection->classic_oob_r_256 = r_256; 9366 } 9367 9368 return ERROR_CODE_SUCCESS; 9369 } 9370 /** 9371 * @brief Generate new OOB data 9372 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9373 */ 9374 void gap_ssp_generate_oob_data(void){ 9375 hci_stack->classic_read_local_oob_data = true; 9376 hci_run(); 9377 } 9378 9379 #endif 9380 9381 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9382 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9383 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9384 if (connection == NULL) { 9385 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9386 } 9387 9388 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9389 connection->link_key_type = type; 9390 9391 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9392 } 9393 9394 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9395 /** 9396 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9397 * @param inquiry_mode see bluetooth_defines.h 9398 */ 9399 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9400 hci_stack->inquiry_mode = inquiry_mode; 9401 } 9402 9403 /** 9404 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9405 */ 9406 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9407 hci_stack->sco_voice_setting = voice_setting; 9408 } 9409 9410 /** 9411 * @brief Get SCO Voice Setting 9412 * @return current voice setting 9413 */ 9414 uint16_t hci_get_sco_voice_setting(void){ 9415 return hci_stack->sco_voice_setting; 9416 } 9417 9418 static int hci_have_usb_transport(void){ 9419 if (!hci_stack->hci_transport) return 0; 9420 const char * transport_name = hci_stack->hci_transport->name; 9421 if (!transport_name) return 0; 9422 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9423 } 9424 9425 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9426 uint16_t sco_packet_length = 0; 9427 9428 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9429 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9430 int multiplier; 9431 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9432 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9433 multiplier = 2; 9434 } else { 9435 multiplier = 1; 9436 } 9437 #endif 9438 9439 #ifdef ENABLE_SCO_OVER_HCI 9440 if (hci_have_usb_transport()){ 9441 // see Core Spec for H2 USB Transfer. 9442 // 3 byte SCO header + 24 bytes per connection 9443 // @note multiple sco connections not supported currently 9444 sco_packet_length = 3 + 24 * multiplier; 9445 } else { 9446 // 3 byte SCO header + SCO packet length over the air 9447 sco_packet_length = 3 + payload_size * multiplier; 9448 // assert that it still fits inside an SCO buffer 9449 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9450 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9451 } 9452 } 9453 #endif 9454 #ifdef HAVE_SCO_TRANSPORT 9455 // 3 byte SCO header + SCO packet length over the air 9456 sco_packet_length = 3 + payload_size * multiplier; 9457 // assert that it still fits inside an SCO buffer 9458 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9459 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9460 } 9461 #endif 9462 return sco_packet_length; 9463 } 9464 9465 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9466 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9467 if (connection != NULL){ 9468 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9469 } 9470 return 0; 9471 } 9472 9473 uint16_t hci_get_sco_packet_length(void){ 9474 btstack_linked_list_iterator_t it; 9475 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9476 while (btstack_linked_list_iterator_has_next(&it)){ 9477 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9478 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9479 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9480 } 9481 } 9482 return 0; 9483 } 9484 9485 /** 9486 * @brief Sets the master/slave policy 9487 * @param policy (0: attempt to become master, 1: let connecting device decide) 9488 */ 9489 void hci_set_master_slave_policy(uint8_t policy){ 9490 hci_stack->master_slave_policy = policy; 9491 } 9492 9493 #endif 9494 9495 HCI_STATE hci_get_state(void){ 9496 return hci_stack->state; 9497 } 9498 9499 #ifdef ENABLE_CLASSIC 9500 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9501 hci_stack->gap_classic_accept_callback = accept_callback; 9502 } 9503 #endif 9504 9505 /** 9506 * @brief Set callback for Bluetooth Hardware Error 9507 */ 9508 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9509 hci_stack->hardware_error_callback = fn; 9510 } 9511 9512 void hci_disconnect_all(void){ 9513 btstack_linked_list_iterator_t it; 9514 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9515 while (btstack_linked_list_iterator_has_next(&it)){ 9516 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9517 if (con->state == SENT_DISCONNECT) continue; 9518 con->state = SEND_DISCONNECT; 9519 } 9520 hci_run(); 9521 } 9522 9523 uint16_t hci_get_manufacturer(void){ 9524 return hci_stack->manufacturer; 9525 } 9526 9527 #ifdef ENABLE_BLE 9528 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9529 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9530 if (!hci_con) return NULL; 9531 return &hci_con->sm_connection; 9532 } 9533 9534 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9535 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9536 #endif 9537 9538 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9539 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9540 if (hci_connection == NULL) return 0; 9541 if (hci_is_le_connection(hci_connection)){ 9542 #ifdef ENABLE_BLE 9543 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9544 if (sm_conn->sm_connection_encrypted != 0u) { 9545 return sm_conn->sm_actual_encryption_key_size; 9546 } 9547 #endif 9548 } else { 9549 #ifdef ENABLE_CLASSIC 9550 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9551 return hci_connection->encryption_key_size; 9552 } 9553 #endif 9554 } 9555 return 0; 9556 } 9557 9558 bool gap_authenticated(hci_con_handle_t con_handle){ 9559 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9560 if (hci_connection == NULL) return false; 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 0; // unencrypted connection cannot be authenticated 9569 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9570 #endif 9571 #ifdef ENABLE_CLASSIC 9572 case BD_ADDR_TYPE_SCO: 9573 case BD_ADDR_TYPE_ACL: 9574 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9575 #endif 9576 default: 9577 return false; 9578 } 9579 } 9580 9581 bool gap_secure_connection(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 switch (hci_connection->address_type){ 9586 #ifdef ENABLE_BLE 9587 case BD_ADDR_TYPE_LE_PUBLIC: 9588 case BD_ADDR_TYPE_LE_RANDOM: 9589 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9590 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9591 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9592 return hci_connection->sm_connection.sm_connection_sc; 9593 #endif 9594 #ifdef ENABLE_CLASSIC 9595 case BD_ADDR_TYPE_SCO: 9596 case BD_ADDR_TYPE_ACL: 9597 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9598 #endif 9599 default: 9600 return false; 9601 } 9602 } 9603 9604 bool gap_bonded(hci_con_handle_t con_handle){ 9605 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9606 if (hci_connection == NULL) return 0; 9607 9608 #ifdef ENABLE_CLASSIC 9609 link_key_t link_key; 9610 link_key_type_t link_key_type; 9611 #endif 9612 switch (hci_connection->address_type){ 9613 #ifdef ENABLE_BLE 9614 case BD_ADDR_TYPE_LE_PUBLIC: 9615 case BD_ADDR_TYPE_LE_RANDOM: 9616 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9617 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9618 return hci_connection->sm_connection.sm_le_db_index >= 0; 9619 #endif 9620 #ifdef ENABLE_CLASSIC 9621 case BD_ADDR_TYPE_SCO: 9622 case BD_ADDR_TYPE_ACL: 9623 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9624 #endif 9625 default: 9626 return false; 9627 } 9628 } 9629 9630 #ifdef ENABLE_BLE 9631 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9632 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9633 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9634 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9635 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9636 return sm_conn->sm_connection_authorization_state; 9637 } 9638 #endif 9639 9640 #ifdef ENABLE_CLASSIC 9641 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){ 9642 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9643 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9644 conn->sniff_min_interval = sniff_min_interval; 9645 conn->sniff_max_interval = sniff_max_interval; 9646 conn->sniff_attempt = sniff_attempt; 9647 conn->sniff_timeout = sniff_timeout; 9648 hci_run(); 9649 return 0; 9650 } 9651 9652 /** 9653 * @brief Exit Sniff mode 9654 * @param con_handle 9655 @ @return 0 if ok 9656 */ 9657 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9658 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9659 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9660 conn->sniff_min_interval = 0xffff; 9661 hci_run(); 9662 return 0; 9663 } 9664 9665 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){ 9666 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9667 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9668 conn->sniff_subrating_max_latency = max_latency; 9669 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9670 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9671 hci_run(); 9672 return ERROR_CODE_SUCCESS; 9673 } 9674 9675 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){ 9676 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9677 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9678 conn->qos_service_type = service_type; 9679 conn->qos_token_rate = token_rate; 9680 conn->qos_peak_bandwidth = peak_bandwidth; 9681 conn->qos_latency = latency; 9682 conn->qos_delay_variation = delay_variation; 9683 hci_run(); 9684 return ERROR_CODE_SUCCESS; 9685 } 9686 9687 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9688 hci_stack->new_page_scan_interval = page_scan_interval; 9689 hci_stack->new_page_scan_window = page_scan_window; 9690 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9691 hci_run(); 9692 } 9693 9694 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9695 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9696 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9697 hci_run(); 9698 } 9699 9700 void gap_set_page_timeout(uint16_t page_timeout){ 9701 hci_stack->page_timeout = page_timeout; 9702 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9703 hci_run(); 9704 } 9705 9706 #endif 9707 9708 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9709 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9710 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9711 if (le_device_db_index >= le_device_db_max_count()) return; 9712 uint8_t offset = le_device_db_index >> 3; 9713 uint8_t mask = 1 << (le_device_db_index & 7); 9714 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9715 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9716 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9717 // note: go back to remove entries, otherwise, a remove + add will skip the add 9718 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9719 } 9720 } 9721 9722 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9723 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9724 if (le_device_db_index >= le_device_db_max_count()) return; 9725 uint8_t offset = le_device_db_index >> 3; 9726 uint8_t mask = 1 << (le_device_db_index & 7); 9727 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9728 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9729 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9730 } 9731 } 9732 9733 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9734 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9735 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9736 } 9737 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9738 // restart le resolving list update 9739 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9740 } 9741 return ERROR_CODE_SUCCESS; 9742 } 9743 9744 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9745 hci_stack->le_privacy_mode = privacy_mode; 9746 } 9747 #endif 9748 9749 #ifdef ENABLE_BLE 9750 #ifdef ENABLE_LE_CENTRAL 9751 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9752 9753 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9754 9755 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9756 // incorrect configuration: 9757 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9758 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9759 btstack_assert(false); 9760 #endif 9761 9762 // check if already in list 9763 btstack_linked_list_iterator_t it; 9764 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9765 while (btstack_linked_list_iterator_has_next(&it)) { 9766 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9767 if (entry->sid != advertising_sid) { 9768 continue; 9769 } 9770 if (entry->address_type != address_type) { 9771 continue; 9772 } 9773 if (memcmp(entry->address, address, 6) != 0) { 9774 continue; 9775 } 9776 // disallow if already scheduled to add 9777 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9778 return ERROR_CODE_COMMAND_DISALLOWED; 9779 } 9780 // still on controller, but scheduled to remove -> re-add 9781 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9782 return ERROR_CODE_SUCCESS; 9783 } 9784 // alloc and add to list 9785 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9786 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9787 entry->sid = advertising_sid; 9788 entry->address_type = address_type; 9789 (void)memcpy(entry->address, address, 6); 9790 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9791 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9792 return ERROR_CODE_SUCCESS; 9793 } 9794 9795 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9796 btstack_linked_list_iterator_t it; 9797 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9798 while (btstack_linked_list_iterator_has_next(&it)){ 9799 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9800 if (entry->sid != advertising_sid) { 9801 continue; 9802 } 9803 if (entry->address_type != address_type) { 9804 continue; 9805 } 9806 if (memcmp(entry->address, address, 6) != 0) { 9807 continue; 9808 } 9809 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9810 // remove from controller if already present 9811 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9812 } else { 9813 // directly remove entry from whitelist 9814 btstack_linked_list_iterator_remove(&it); 9815 btstack_memory_periodic_advertiser_list_entry_free(entry); 9816 } 9817 return ERROR_CODE_SUCCESS; 9818 } 9819 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9820 } 9821 9822 static void hci_periodic_advertiser_list_clear(void){ 9823 btstack_linked_list_iterator_t it; 9824 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9825 while (btstack_linked_list_iterator_has_next(&it)){ 9826 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9827 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9828 // remove from controller if already present 9829 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9830 continue; 9831 } 9832 // directly remove entry from whitelist 9833 btstack_linked_list_iterator_remove(&it); 9834 btstack_memory_periodic_advertiser_list_entry_free(entry); 9835 } 9836 } 9837 9838 uint8_t gap_periodic_advertiser_list_clear(void){ 9839 hci_periodic_advertiser_list_clear(); 9840 hci_run(); 9841 return ERROR_CODE_SUCCESS; 9842 } 9843 9844 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9845 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9846 if (status){ 9847 return status; 9848 } 9849 hci_run(); 9850 return ERROR_CODE_SUCCESS; 9851 } 9852 9853 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9854 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9855 if (status){ 9856 return status; 9857 } 9858 hci_run(); 9859 return ERROR_CODE_SUCCESS; 9860 } 9861 9862 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9863 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9864 // abort if already active 9865 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9866 return ERROR_CODE_COMMAND_DISALLOWED; 9867 } 9868 // store request 9869 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9870 hci_stack->le_periodic_sync_options = options; 9871 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9872 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9873 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9874 hci_stack->le_periodic_sync_skip = skip; 9875 hci_stack->le_periodic_sync_timeout = sync_timeout; 9876 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9877 9878 hci_run(); 9879 return ERROR_CODE_SUCCESS; 9880 } 9881 9882 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9883 // abort if not requested 9884 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9885 return ERROR_CODE_COMMAND_DISALLOWED; 9886 } 9887 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9888 hci_run(); 9889 return ERROR_CODE_SUCCESS; 9890 } 9891 9892 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9893 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9894 return ERROR_CODE_COMMAND_DISALLOWED; 9895 } 9896 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9897 hci_run(); 9898 return ERROR_CODE_SUCCESS; 9899 } 9900 9901 #endif 9902 #endif 9903 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9904 static hci_iso_stream_t * 9905 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9906 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9907 if (iso_stream != NULL){ 9908 iso_stream->iso_type = iso_type; 9909 iso_stream->state = state; 9910 iso_stream->group_id = group_id; 9911 iso_stream->stream_id = stream_id; 9912 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9913 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9914 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9915 } 9916 return iso_stream; 9917 } 9918 9919 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9920 btstack_linked_list_iterator_t it; 9921 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9922 while (btstack_linked_list_iterator_has_next(&it)){ 9923 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9924 if (iso_stream->cis_handle == con_handle ) { 9925 return iso_stream; 9926 } 9927 } 9928 return NULL; 9929 } 9930 9931 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9932 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9933 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9934 btstack_memory_hci_iso_stream_free(iso_stream); 9935 } 9936 9937 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9938 btstack_linked_list_iterator_t it; 9939 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9940 while (btstack_linked_list_iterator_has_next(&it)){ 9941 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9942 if ((iso_stream->group_id == group_id) && 9943 (iso_stream->iso_type == iso_type)){ 9944 btstack_linked_list_iterator_remove(&it); 9945 btstack_memory_hci_iso_stream_free(iso_stream); 9946 } 9947 } 9948 } 9949 9950 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9951 btstack_linked_list_iterator_t it; 9952 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9953 while (btstack_linked_list_iterator_has_next(&it)){ 9954 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9955 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9956 (iso_stream->group_id == group_id)){ 9957 btstack_linked_list_iterator_remove(&it); 9958 btstack_memory_hci_iso_stream_free(iso_stream); 9959 } 9960 } 9961 } 9962 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9963 btstack_linked_list_iterator_t it; 9964 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9965 while (btstack_linked_list_iterator_has_next(&it)){ 9966 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9967 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9968 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9969 } 9970 } 9971 } 9972 9973 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9974 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9975 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9976 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9977 return (sdu_len_offset + 2 + sdu_len) == size; 9978 } 9979 9980 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 9981 if (iso_stream == NULL){ 9982 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 9983 return; 9984 } 9985 9986 if (hci_stack->iso_packet_handler == NULL) { 9987 return; 9988 } 9989 9990 // parse header 9991 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 9992 uint16_t data_total_length = little_endian_read_16(packet, 2); 9993 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 9994 9995 // assert packet is complete 9996 if ((data_total_length + 4u) != size){ 9997 return; 9998 } 9999 10000 if ((pb_flag & 0x01) == 0){ 10001 if (pb_flag == 0x02){ 10002 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10003 if (hci_iso_sdu_complete(packet, size)) { 10004 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10005 } 10006 } else { 10007 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10008 if (size > sizeof(iso_stream->reassembly_buffer)){ 10009 return; 10010 } 10011 memcpy(iso_stream->reassembly_buffer, packet, size); 10012 // fix pb_flag 10013 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10014 iso_stream->reassembly_pos = size; 10015 } 10016 } else { 10017 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10018 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10019 if (ts_flag != 0){ 10020 return; 10021 } 10022 // append fragment 10023 if (iso_stream->reassembly_pos == 0){ 10024 return; 10025 } 10026 10027 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10028 // reset reassembly buffer 10029 iso_stream->reassembly_pos = 0; 10030 return; 10031 } 10032 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10033 iso_stream->reassembly_pos += data_total_length; 10034 10035 // deliver if last fragment and SDU complete 10036 if (pb_flag == 0x03){ 10037 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10038 // fix data_total_length 10039 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10040 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10041 } 10042 // reset reassembly buffer 10043 iso_stream->reassembly_pos = 0; 10044 } 10045 } 10046 } 10047 10048 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10049 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10050 uint16_t pos = 0; 10051 event[pos++] = HCI_EVENT_META_GAP; 10052 event[pos++] = 4 + (2 * big->num_bis); 10053 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10054 event[pos++] = status; 10055 event[pos++] = big->big_handle; 10056 event[pos++] = big->num_bis; 10057 uint8_t i; 10058 for (i=0;i<big->num_bis;i++){ 10059 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10060 pos += 2; 10061 } 10062 hci_emit_event(event, pos, 0); 10063 } 10064 10065 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10066 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10067 uint16_t pos = 0; 10068 event[pos++] = HCI_EVENT_META_GAP; 10069 event[pos++] = 4 + (2 * cig->num_cis); 10070 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10071 event[pos++] = status; 10072 event[pos++] = cig->cig_id; 10073 event[pos++] = cig->num_cis; 10074 uint8_t i; 10075 for (i=0;i<cig->num_cis;i++){ 10076 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10077 pos += 2; 10078 } 10079 hci_emit_event(event, pos, 0); 10080 } 10081 10082 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10083 uint16_t pos = 0; 10084 event[pos++] = HCI_EVENT_META_GAP; 10085 event[pos++] = 8; 10086 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10087 event[pos++] = status; 10088 event[pos++] = iso_stream->group_id; 10089 event[pos++] = iso_stream->stream_id; 10090 little_endian_store_16(event, pos, iso_stream->cis_handle); 10091 pos += 2; 10092 little_endian_store_16(event, pos, iso_stream->acl_handle); 10093 pos += 2; 10094 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10095 pos += 2; 10096 event[pos++] = iso_stream->number_of_subevents; 10097 event[pos++] = iso_stream->burst_number_c_to_p; 10098 event[pos++] = iso_stream->burst_number_p_to_c; 10099 event[pos++] = iso_stream->flush_timeout_c_to_p; 10100 event[pos++] = iso_stream->flush_timeout_p_to_c; 10101 return pos; 10102 } 10103 10104 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10105 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10106 // cache data before finalizing struct 10107 uint8_t event [17]; 10108 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10109 btstack_assert(pos <= sizeof(event)); 10110 if (status != ERROR_CODE_SUCCESS){ 10111 hci_iso_stream_finalize(iso_stream); 10112 } 10113 hci_emit_event(event, pos, 0); 10114 } 10115 10116 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10117 uint8_t event [4]; 10118 uint16_t pos = 0; 10119 event[pos++] = HCI_EVENT_META_GAP; 10120 event[pos++] = 2; 10121 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10122 event[pos++] = big->big_handle; 10123 hci_emit_event(event, pos, 0); 10124 } 10125 10126 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10127 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10128 uint16_t pos = 0; 10129 event[pos++] = HCI_EVENT_META_GAP; 10130 event[pos++] = 4; 10131 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10132 event[pos++] = status; 10133 event[pos++] = big_sync->big_handle; 10134 event[pos++] = big_sync->num_bis; 10135 uint8_t i; 10136 for (i=0;i<big_sync->num_bis;i++){ 10137 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10138 pos += 2; 10139 } 10140 hci_emit_event(event, pos, 0); 10141 } 10142 10143 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10144 uint8_t event [4]; 10145 uint16_t pos = 0; 10146 event[pos++] = HCI_EVENT_META_GAP; 10147 event[pos++] = 2; 10148 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10149 event[pos++] = big_handle; 10150 hci_emit_event(event, pos, 0); 10151 } 10152 10153 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10154 uint8_t event[6]; 10155 uint16_t pos = 0; 10156 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10157 event[pos++] = sizeof(event) - 2; 10158 event[pos++] = big->big_handle; 10159 event[pos++] = bis_index; 10160 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10161 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10162 } 10163 10164 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10165 uint8_t event[4]; 10166 uint16_t pos = 0; 10167 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10168 event[pos++] = sizeof(event) - 2; 10169 little_endian_store_16(event, pos, cis_con_handle); 10170 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10171 } 10172 10173 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10174 btstack_linked_list_iterator_t it; 10175 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10176 while (btstack_linked_list_iterator_has_next(&it)){ 10177 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10178 if ( big->big_handle == big_handle ) { 10179 return big; 10180 } 10181 } 10182 return NULL; 10183 } 10184 10185 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10186 btstack_linked_list_iterator_t it; 10187 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10188 while (btstack_linked_list_iterator_has_next(&it)){ 10189 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10190 if ( big_sync->big_handle == big_handle ) { 10191 return big_sync; 10192 } 10193 } 10194 return NULL; 10195 } 10196 10197 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10198 hci_stack->iso_packets_to_queue = num_packets; 10199 } 10200 10201 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10202 btstack_linked_list_iterator_t it; 10203 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10204 while (btstack_linked_list_iterator_has_next(&it)){ 10205 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10206 if ( cig->cig_id == cig_id ) { 10207 return cig; 10208 } 10209 } 10210 return NULL; 10211 } 10212 10213 static void hci_iso_notify_can_send_now(void){ 10214 10215 // BIG 10216 10217 btstack_linked_list_iterator_t it; 10218 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10219 while (btstack_linked_list_iterator_has_next(&it)){ 10220 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10221 // track number completed packet timestamps 10222 if (big->num_completed_timestamp_current_valid){ 10223 big->num_completed_timestamp_current_valid = false; 10224 if (big->num_completed_timestamp_previous_valid){ 10225 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10226 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10227 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10228 big->num_completed_timestamp_previous_ms); 10229 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10230 // to catch up, skip packet on all BIS 10231 uint8_t i; 10232 for (i=0;i<big->num_bis;i++){ 10233 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10234 if (iso_stream){ 10235 iso_stream->num_packets_to_skip++; 10236 } 10237 } 10238 } 10239 } 10240 big->num_completed_timestamp_previous_valid = true; 10241 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10242 } 10243 10244 if (big->can_send_now_requested){ 10245 // check if no outgoing iso packets pending and no can send now have to be emitted 10246 uint8_t i; 10247 bool can_send = true; 10248 uint8_t num_iso_queued_minimum = 0; 10249 for (i=0;i<big->num_bis;i++){ 10250 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10251 if (iso_stream == NULL) continue; 10252 // handle case where individual ISO packet was sent too late: 10253 // for each additionally queued packet, a new one needs to get skipped 10254 if (i==0){ 10255 num_iso_queued_minimum = iso_stream->num_packets_sent; 10256 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10257 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10258 iso_stream->num_packets_to_skip += num_packets_to_skip; 10259 iso_stream->num_packets_sent -= num_packets_to_skip; 10260 } 10261 // check if we can send now 10262 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10263 can_send = false; 10264 break; 10265 } 10266 } 10267 if (can_send){ 10268 // propagate can send now to individual streams 10269 big->can_send_now_requested = false; 10270 for (i=0;i<big->num_bis;i++){ 10271 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10272 iso_stream->emit_ready_to_send = true; 10273 } 10274 } 10275 } 10276 } 10277 10278 if (hci_stack->hci_packet_buffer_reserved) return; 10279 10280 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10281 while (btstack_linked_list_iterator_has_next(&it)){ 10282 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10283 // report bis ready 10284 uint8_t i; 10285 for (i=0;i<big->num_bis;i++){ 10286 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10287 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10288 iso_stream->emit_ready_to_send = false; 10289 hci_emit_bis_can_send_now(big, i); 10290 break; 10291 } 10292 } 10293 } 10294 10295 // CIS 10296 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10297 while (btstack_linked_list_iterator_has_next(&it)) { 10298 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10299 if ((iso_stream->can_send_now_requested) && 10300 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10301 iso_stream->can_send_now_requested = false; 10302 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10303 } 10304 } 10305 } 10306 10307 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10308 // make big handle unique and usuable for big and big sync 10309 if (hci_big_for_handle(big_handle) != NULL){ 10310 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10311 } 10312 if (hci_big_sync_for_handle(big_handle) != NULL){ 10313 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10314 } 10315 if (num_bis == 0){ 10316 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10317 } 10318 if (num_bis > MAX_NR_BIS){ 10319 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10320 } 10321 10322 // reserve ISO Streams 10323 uint8_t i; 10324 uint8_t status = ERROR_CODE_SUCCESS; 10325 for (i=0;i<num_bis;i++){ 10326 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10327 if (iso_stream == NULL) { 10328 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10329 break; 10330 } 10331 } 10332 10333 // free structs on error 10334 if (status != ERROR_CODE_SUCCESS){ 10335 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10336 } 10337 10338 return status; 10339 } 10340 10341 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10342 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10343 if (status != ERROR_CODE_SUCCESS){ 10344 return status; 10345 } 10346 10347 le_audio_big_t * big = storage; 10348 big->big_handle = big_params->big_handle; 10349 big->params = big_params; 10350 big->state = LE_AUDIO_BIG_STATE_CREATE; 10351 big->num_bis = big_params->num_bis; 10352 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10353 10354 hci_run(); 10355 10356 return ERROR_CODE_SUCCESS; 10357 } 10358 10359 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10360 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10361 if (status != ERROR_CODE_SUCCESS){ 10362 return status; 10363 } 10364 10365 le_audio_big_sync_t * big_sync = storage; 10366 big_sync->big_handle = big_sync_params->big_handle; 10367 big_sync->params = big_sync_params; 10368 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10369 big_sync->num_bis = big_sync_params->num_bis; 10370 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10371 10372 hci_run(); 10373 10374 return ERROR_CODE_SUCCESS; 10375 } 10376 10377 uint8_t gap_big_terminate(uint8_t big_handle){ 10378 le_audio_big_t * big = hci_big_for_handle(big_handle); 10379 if (big == NULL){ 10380 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10381 } 10382 switch (big->state){ 10383 case LE_AUDIO_BIG_STATE_CREATE: 10384 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10385 hci_emit_big_terminated(big); 10386 break; 10387 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10388 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10389 break; 10390 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10391 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10392 case LE_AUDIO_BIG_STATE_ACTIVE: 10393 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10394 hci_run(); 10395 break; 10396 default: 10397 return ERROR_CODE_COMMAND_DISALLOWED; 10398 } 10399 return ERROR_CODE_SUCCESS; 10400 } 10401 10402 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10403 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10404 if (big_sync == NULL){ 10405 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10406 } 10407 switch (big_sync->state){ 10408 case LE_AUDIO_BIG_STATE_CREATE: 10409 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10410 hci_emit_big_sync_stopped(big_handle); 10411 break; 10412 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10413 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10414 break; 10415 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10416 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10417 case LE_AUDIO_BIG_STATE_ACTIVE: 10418 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10419 hci_run(); 10420 break; 10421 default: 10422 return ERROR_CODE_COMMAND_DISALLOWED; 10423 } 10424 return ERROR_CODE_SUCCESS; 10425 } 10426 10427 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10428 le_audio_big_t * big = hci_big_for_handle(big_handle); 10429 if (big == NULL){ 10430 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10431 } 10432 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10433 return ERROR_CODE_COMMAND_DISALLOWED; 10434 } 10435 big->can_send_now_requested = true; 10436 hci_iso_notify_can_send_now(); 10437 return ERROR_CODE_SUCCESS; 10438 } 10439 10440 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10441 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10442 if (iso_stream == NULL){ 10443 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10444 } 10445 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10446 return ERROR_CODE_COMMAND_DISALLOWED; 10447 } 10448 iso_stream->can_send_now_requested = true; 10449 hci_iso_notify_can_send_now(); 10450 return ERROR_CODE_SUCCESS; 10451 } 10452 10453 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10454 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10455 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10456 } 10457 if (cig_params->num_cis == 0){ 10458 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10459 } 10460 if (cig_params->num_cis > MAX_NR_CIS){ 10461 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10462 } 10463 10464 // reserve ISO Streams 10465 uint8_t i; 10466 uint8_t status = ERROR_CODE_SUCCESS; 10467 for (i=0;i<cig_params->num_cis;i++){ 10468 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10469 if (iso_stream == NULL) { 10470 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10471 break; 10472 } 10473 } 10474 10475 // free structs on error 10476 if (status != ERROR_CODE_SUCCESS){ 10477 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10478 return status; 10479 } 10480 10481 le_audio_cig_t * cig = storage; 10482 cig->cig_id = cig_params->cig_id; 10483 cig->num_cis = cig_params->num_cis; 10484 cig->params = cig_params; 10485 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10486 for (i=0;i<cig->num_cis;i++){ 10487 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10488 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10489 cig->cis_setup_active[i] = false; 10490 cig->cis_established[i] = false; 10491 } 10492 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10493 10494 hci_run(); 10495 10496 return ERROR_CODE_SUCCESS; 10497 } 10498 10499 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10500 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10501 if (cig == NULL){ 10502 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10503 } 10504 10505 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10506 return ERROR_CODE_COMMAND_DISALLOWED; 10507 } 10508 10509 // store ACL Connection Handles 10510 uint8_t i; 10511 for (i=0;i<cig->num_cis;i++){ 10512 // check that all con handles exist and store 10513 hci_con_handle_t cis_handle = cis_con_handles[i]; 10514 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10515 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10516 } 10517 uint8_t j; 10518 bool found = false; 10519 for (j=0;j<cig->num_cis;j++){ 10520 if (cig->cis_con_handles[j] == cis_handle){ 10521 cig->acl_con_handles[j] = acl_con_handles[j]; 10522 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10523 btstack_assert(iso_stream != NULL); 10524 iso_stream->acl_handle = acl_con_handles[j]; 10525 found = true; 10526 break; 10527 } 10528 } 10529 if (!found){ 10530 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10531 } 10532 } 10533 10534 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10535 hci_run(); 10536 10537 return ERROR_CODE_SUCCESS; 10538 } 10539 10540 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10541 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10542 if (iso_stream == NULL){ 10543 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10544 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10545 } 10546 10547 // set next state and continue 10548 iso_stream->state = state; 10549 hci_run(); 10550 return ERROR_CODE_SUCCESS; 10551 } 10552 10553 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10554 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10555 } 10556 10557 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10558 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10559 } 10560 10561 10562 #endif 10563 #endif /* ENABLE_BLE */ 10564 10565 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10566 void hci_setup_test_connections_fuzz(void){ 10567 hci_connection_t * conn; 10568 10569 // default address: 66:55:44:33:00:01 10570 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10571 10572 // setup Controller info 10573 hci_stack->num_cmd_packets = 255; 10574 hci_stack->acl_packets_total_num = 255; 10575 10576 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10577 addr[5] = 0x01; 10578 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10579 conn->con_handle = addr[5]; 10580 conn->state = RECEIVED_CONNECTION_REQUEST; 10581 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10582 10583 // setup incoming Classic SCO connection with con handle 0x0002 10584 addr[5] = 0x02; 10585 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10586 conn->con_handle = addr[5]; 10587 conn->state = RECEIVED_CONNECTION_REQUEST; 10588 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10589 10590 // setup ready Classic ACL connection with con handle 0x0003 10591 addr[5] = 0x03; 10592 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10593 conn->con_handle = addr[5]; 10594 conn->state = OPEN; 10595 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10596 10597 // setup ready Classic SCO connection with con handle 0x0004 10598 addr[5] = 0x04; 10599 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10600 conn->con_handle = addr[5]; 10601 conn->state = OPEN; 10602 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10603 10604 // setup ready LE ACL connection with con handle 0x005 and public address 10605 addr[5] = 0x05; 10606 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10607 conn->con_handle = addr[5]; 10608 conn->state = OPEN; 10609 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10610 conn->sm_connection.sm_connection_encrypted = 1; 10611 } 10612 10613 void hci_free_connections_fuzz(void){ 10614 btstack_linked_list_iterator_t it; 10615 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10616 while (btstack_linked_list_iterator_has_next(&it)){ 10617 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10618 btstack_linked_list_iterator_remove(&it); 10619 btstack_memory_hci_connection_free(con); 10620 } 10621 } 10622 void hci_simulate_working_fuzz(void){ 10623 hci_stack->le_scanning_param_update = false; 10624 hci_init_done(); 10625 hci_stack->num_cmd_packets = 255; 10626 } 10627 #endif 10628